Abstract:
Disclosed is a dilatation balloon having a single layer containing polyesteretheramide copolymer. The dilatation balloon may also contain polyamide and/or additional polymers, and may contain substantially no polyetheramide having substantially no ester linkages.

Description:
This application is a divisional application of Ser. No. 08/931,256 filed Sep. 16, 1997, now abandoned, which is a divisional application of Ser. No. 08/906,126 filed Aug. 5, 1997 and is now abandoned, and is a continuation of Ser. No. 08/449,048 filed May 24, 1995 which is now abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     I. Field of the Invention 
     The present invention is generally directed to dilatation balloons containing polyesteretheramide copolymer. 
     II. Related Art 
     The use of balloon catheters for coronary angioplasty is known in the art. In an angioplasty procedure, a partially occluded blood vessel, i.e., one containing a stenosis, is treated by the use of an expanding balloon member which presses the stenosis back against the vessel wall. Typically, the expander member or balloon is carried on the distal end of a dilatation catheter which is routed through the vascular system to a location within, for example, a coronary artery containing a stenotic lesion. Following placement of the expander member across the lesion as desired, fluid is introduced into the proximal end of the catheter to inflate the expander member to a relatively high pressure, thereby restoring patency to the vessel. Coronary angioplasty procedures and angioplasty devices are described in detail in Vliestra et al., “Coronary Balloon Angioplasty,” Blackwell Scientific Publications (1994). 
     Medical balloons that are known in the art are disclosed in the following documents: U.S. Pat. Nos. 4,964,853 and 4,994,032 to Sugiyama et al; U.S. Pat. Nos. 4,906,244, 5,108,415, 5,156,612, 5,236,659, and 5,304,197, to Pinchuk et al; U.S. Pat. Nos. 5,226,880 and 5,334,148 to Martin; U.S. Pat. No. 5,250,069 to Nobuyoshi et al; U.S. Pat. No. 5,328,468 to Kaneko et al.; European Patent Application No. 0 566 755; and Japanese laid-open patent application No. 58-188463. (All documents cited herein, including the foregoing, are incorporated herein in their entireties for all purposes.) 
     It is an object of the present invention to provide a balloon for an angioplasty device which is made, at least in part, of polyesteretheramide copolymer. 
     Other objects and advantages of the invention will become apparent to those skilled in the art through familiarization with the specification and claims herein. 
     SUMMARY OF THE INVENTION 
     In sum, the present invention relates to a balloon for an angioplasty device having a single polymeric layer. The layer may. have from about 20 to about 100 weight percent polyesteretheramide copolymer and from about 0 to about 80 weight percent polyamide. The layer contains substantially no polyetheramide having substantially no ester linkages. The polyesteretheramide copolymer may be a block or random copolymer. The polyesteretheramide copolymer may have a hardness of from about 45 Shore D to about 78 Shore D, preferably from about 55 Shore D to about 75 Shore D, and more preferably from about 63 to about 72 Shore D. Even more preferably, the polyesteretheramide copolymer may have a hardness selected from about 63 Shore D, about 70 Shore D, and about 72 Shore D. The single polymeric layer may contain at least about 2 weight percent polyamide such as nylon 12, nylon 11, nylon 6, nylon 6/6, nylon 4/6, and combinations thereof. The single polymeric layer may further contain at least about 2 weight percent polymer such as polyester copolymer, polyurethane copolymer, polyethylene, and combinations thereof. The polymeric layer may have at least about 40 weight percent polyesteretheramide copolymer and more preferably at least about 80 weight percent polyesteretheramide copolymer. The balloon may have from about 20 to about 80 weight percent nylon 12 and about 20 to about 80 weight percent polyesteretheramide copolymer, preferably about 60 weight percent nylon 12 and about 40 weight percent polyesteretheramide copolymer. Alternatively, the balloon may have about 25 to about 80 weight percent nylon 4/6 and about 20 to about 75 weight percent polyesteretheramide copolymer, preferably about 65 weight percent nylon 4/6 and about 35 weight percent polyesteretheramide copolymer. 
     The present invention also relates to a balloon for an angioplasty device having a single polymeric layer consisting essentially of a polyesteretheramide copolymer. The polyesteretheramide copolymer may be a block or random copolymer. The polyesteretheramide copolymer may have a hardness of from about 45 Shore D to about 78 Shore D, preferably from about 55 Shore D to about 75 Shore D, and more preferably about 63 to about 72 Shore D. Even more preferably the polyesteretheramide copolymer may have a hardness selected from 63 Shore D, 70 Shore D, and 72 Shore D. The balloon may consist of polyesteretheramide. 
     The present invention also relates to a balloon for an angioplasty device having a single polymeric layer having (a) at least 91 weight percent polyesteretheramide copolymer, (b) from 0 to 9 weight percent polyamide, and (c) from 0 to 9 weight percent of a polymer other than polyesteretheramide and polyamide. The balloon may have at least about 95 weight percent polyesteretheramide copolymer. 
    
    
     DESCRIPTION OF THE DRAWINGS 
     FIG. 1 is a perspective view of an expander member of the present invention joined to the distal end of a catheter; 
     FIG. 2 is a cross-sectional view of a balloon form used to make expander members of the present invention; 
     FIG. 3 is a schematic view of a mold apparatus used to make expander members of the present invention; 
     FIG. 4 shows a response surface that details the effects of processing variables and material selection on balloon wall thickness for PEBAX 6333 balloons; 
     FIG. 5 shows a response surface that details the effects of processing variables and material selection on balloon burst pressure for PEBAX 6333 balloons; 
     FIG. 6 shows a response surface that details the effects of processing variables and material selection on balloon K-stat for PEBAX 6333 balloons; 
     FIG. 7 shows a response surface that details the effects of processing variables and material selection on balloon hoop stress for PEBAX 6333 balloons; 
     FIG. 8 shows a response surface that details the effects of processing variables and material selection on balloon wall thickness for PEBAX 7033 balloons; 
     FIG. 9 shows a response surface that details the effects of processing variables and material selection on balloon burst pressure for PEBAX 7033 balloons; 
     FIG. 10 shows a response surface that details the effects of processing variables and material selection on balloon K-stat 7033 for PEBAX 7033 balloons; 
     FIG. 11 shows a response surface that details the effects of processing variables and material selection on balloon hoop stress for PEBAX 7033 balloons; 
     FIG. 12 shows a response surface that details the effects of processing variables and material selection on balloon wall thickness for PEBAX 7233 balloons; 
     FIG. 13 shows a response surface that details the effects of processing variables and material selection on balloon burst pressure for PEBAX 7233 balloons; 
     FIG. 14 shows a response surface that details the effects of processing variables and material selection on balloon K-stat for PEBAX 7233 balloons; and 
     FIG. 15 shows a response surface that details the effects of processing variables and material selection on balloon hoop stress for PEBAX 7233 balloons. 
    
    
     DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     With reference to FIG. 1, expander member  2  is attached to the distal end of a catheter shaft  4 . The expander member  2 , otherwise known as a balloon, has a single polymeric layer 6 which surrounds the catheter shaft  4 . The expander member  2  shown is bonded at two bonding sites  8   a,b  by thermal bonding, by laser bonding, with adhesives, or by other methods known in the art. 
     The expander members of the present invention contain polyesteretheramide copolymer. The structure of these polymers consists of regular and linear chains of rigid polyamide blocks and flexible polyether blocks. Such copolymers may be described by the following formula:                           
     where PA is a polyamide block; and 
     where PE is a polyether block. 
     Polyesteretheramide copolymer materials are sold under the trademark PEBAX by Atochem Inc. of Glen Rock, N.J. Properties of several grades of PEBAX are disclosed in Atochem&#39;s brochure entitled “PEBAX Polyether Block Amide” (December 1987). 
     The expander member of the present invention may contain polyamide. Polyamide materials include nylon 12, nylon 11, nylon 6, nylon 6/6, and nylon 4/6. Such materials are sold under the trademark ZYTEL® by Dupont. 
     The expander member of the present invention may further contain a polymer other than polyesteretheramide copolymer or polyamide, such as polyester copolymer, polyurethane copolymer, polyethylene, and combinations thereof. 
     The single polymeric layer making up the expander member may be a blend of suitable materials. Such a blend may be created by mixing the desired resins and then extruding these resins to form a parison. The single layer can also be a graft copolymer. Such a graft copolymer can be formed, for example, by reacting polyamide (such as Nylon 12) with polyphenylether graft maleic anhydride (PPE-graft-MA). So called polymer alloys, and the like, are also included within the purview of this application. 
     The expander member of the present invention may be formed by first generating a parison in an extruder. The parison will typically have an inside diameter of from about 0.01 to 0.031 inches (0.025 to 0.079 cm), and a wall thickness of from about 0.0035 to 0.015 inches (0.0089 to 0.038 cm). 
     Hot water treated molding devices may then be utilized to blow mold the expander members of the present invention. Tubing of the desired material and having a required size and thickness is inserted into a balloon processing mold and heated to a temperature of from about 200-212° F. (93-100° C.). Weight may be added to the mold as desired. The tubing is subjected to longitudinal tension and high-pressure nitrogen 380-500 psi is introduced into the tubing in the mold. The mold remains in a hot water bath for a predetermined period of time of from about 10-45 seconds, preferably 25 seconds. The mold is then removed and placed in a cooling pot for a predetermined period of time of from about 20-40 seconds, preferably 30 seconds, after which the mold may be opened and the balloon removed. 
     In an alternative process, the balloons are formed in balloon blow molding machines. The tubing is inserted into the mold and the ends of the tubing secured into mold gaskets. The tubing is thereafter heated in the range of 190-220° F. (87-104° C.) for about 10 to 45 seconds, preferably 25-30 seconds, and the heated tubing is subjected to longitudinal tension and expanded 1-2 times its length in the axial direction. The stretched tubing is pressurized with nitrogen in the range of about 350-500 psi and heat treated in the mold for about 10-20 seconds at about 250-280° F. (121-138° C.), preferably about 260-270° F. (127-132° C.). The mold is then cooled to room temperature and allowed to set at room temperature in the mold under pressure for approximately 10 to 15 seconds. Thereafter, the system can be depressurized and the balloon removed from the mold. 
     EXAMPLES 
     Balloons were made of polyesteretheramide block copolymer and then tested to determine certain characteristics. 
     Examples 1-180 
     180 balloons were made according to the following process: 
     Parisons of 100 weight percent polyesteretheramide block copolymer were extruded. The parisons had inside diameters of about 0.015 inches to about 0.023 inches, wall thicknesses of about 0.006 inches to about 0.010 inches, and lengths of about 18 inches. 
     The parisons were placed in the mold apparatus illustrated in FIGS. 2 and 3. As shown in FIG. 2, the balloon form  8  had a void  10  corresponding to the final shape of the expander member. The void was made up by a proximal form  24 , a body form  26 , and a distal form  28 . With reference to FIG. 3, the distal end of the parison was inserted into the proximal end  14  of the mold apparatus  12 , and pushed through the proximal form  24 , the body form  26 , and the distal form  28  until it exited the distal end  16  of the mold section. Cap  18  was then placed over the distal end  16  of the apparatus  12  thereby clamping and sealing the distal end of the parison. The mold was then placed in a handle  20  such that the proximal end of the parison freely extended from the handle  20 . Weights  22  were then placed over the proximal end of the parison and onto the mold. 
     The open proximal end of the parison was then connected to a pressurized nitrogen source by a Touhy Borst clamp. The nitrogen source was capable of achieving maximum pressures of 1,000 psi. The nitrogen source was then opened to varying degrees of between 350-500 psi and the mold was placed in a bath of hot water (212° F.). 
     The hot water bath warmed the parison. The freely extending proximal end of the parison was held by hand such that only about the distal form  28  was under water, until the mold dropped due to longitudinal stretching and the distal end of the parison expanded radially (about 15-30 seconds). Still holding the mold by hand, the mold continued to drop until it was entirely under water and the proximal end of the balloon expanded radially (about an additional 1-10 seconds). 
     The mold was then removed from the hot water bath and placed in a cold water bath of about 60-75° F. for about 30 seconds. The nitrogen was then shut off, and the balloon was removed from the mold. 
     The balloons were tested by attaching the balloons to a pressurized nitrogen source in a 37° C. water bath, expanding the balloons under several predetermined pressures of nitrogen (50 psi, 100 psi, 150 psi, and burst pressure), and then measuring several dimensions and the burst pressure of the balloons. Dimensions were measured with a snap gauge. 
     Tables 1-18 below list certain parameters of the process utilized to make the subject balloons (hot pot temperature, cold pot temperature, weight added to mold, and nitrogen pressure). The tables also show results of the testing of the expander members. K stat was calculated as follows: (Burst pressure)−((K Stat)(Burst Pressure Standard Deviation)). Hoop stress was calculated as follows: (Balloon Burst Pressure)(Balloon Diameter)/(2)(Balloon Wall Thickness). 
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 1 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 1 
                 0.001250 
                 0.001300 
                 0.001250 
                 .017 × .031 
                 0.1120 
                 0.1200 
                 0.1260 
                 255 
               
               
                 2 
                 0.001350 
                 0.001300 
                 0.001300 
                 .017 × .031 
                 0.1120 
                 0.1200 
                 0.1250 
                 266 
               
               
                 3 
                 0.001400 
                 0.001300 
                 0.001300 
                 .017 × .031 
                 0.1125 
                 0.1210 
                 0.1250 
                 269 
               
               
                 4 
                 0.001300 
                 0.001400 
                 0.001250 
                 .017 × .031 
                 0.1120 
                 0.1200 
                 0.1250 
                 270 
               
               
                 5 
                 0.001350 
                 0.001400 
                 0.001300 
                 .017 × .031 
                 0.1130 
                 0.1200 
                 0.1260 
                 270 
               
               
                 6 
                 0.001350 
                 0.001400 
                 0.001300 
                 .017 × .031 
                   
                   
                   
                 252 
               
               
                 7 
                 0.001350 
                 0.001400 
                 0.001300 
                 .017 × .031 
                   
                   
                   
                 268 
               
               
                 8 
                 0.001300 
                 0.001400 
                 0.001300 
                 .017 × .031 
                   
                   
                   
                 270 
               
               
                 9 
                 0.001300 
                 0.001350 
                 0.001300 
                 .017 × .031 
                   
                   
                   
                 268 
               
               
                 10 
                 0.001350 
                 0.001450 
                 0.001300 
                 .017 × .031 
                   
                   
                   
                 280 
               
               
                 Average 
                 0.001330 
                 0.001370 
                 0.001290 
                 .017 × .031 
                 0.11230 
                 0.12020 
                 0.12540 
                 266.8 
               
               
                 Standard 
                 4.2164E − 05 
                 5.37484E − 0.5 
                 2.10819E − 05 
                   
                 0.000447 
                 0.000447 
                 0.000548 
                 7.9693859 
               
               
                   
               
               
                 Calculated K-stat (psi): 225.3353  
               
               
                 Calculated Hoop Stress (psi): 24112  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 2 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 300 GRAMS 
               
               
                 NITROGEN 480 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 11 
                 0.00190 
                 0.00190 
                 0.00190 
                 .015 × .035 
                 0.1080 
                 0.1180 
                 0.1230 
                 300 
               
               
                 12 
                 0.00180 
                 0.00185 
                 0.00180 
                 .015 × .035 
                 0.1090 
                 0.1180 
                 0.1220 
                 275 
               
               
                 13 
                 0.00170 
                 0.00185 
                 0.00165 
                 .015 × .035 
                 0.1090 
                 0.1180 
                 0.1220 
                 296 
               
               
                 14 
                 0.00180 
                 0.00180 
                 0.00180 
                 .015 × .035 
                 0.1075 
                 0.1170 
                 0.1220 
                 285 
               
               
                 15 
                 0.00190 
                 0.00195 
                 0.00170 
                 .015 × .035 
                 0.1080 
                 0.1180 
                 0.1220 
                 285 
               
               
                 16 
                 0.00180 
                 0.00185 
                 0.00160 
                 .015 × .035 
                   
                   
                   
                 300 
               
               
                 17 
                 0.00180 
                 0.00180 
                 0.00180 
                 .015 × .035 
                   
                   
                   
                 293 
               
               
                 18 
                 0.00190 
                 0.00185 
                 0.00170 
                 .015 × .035 
                   
                   
                   
                 315 
               
               
                 19 
                 0.00185 
                 0.00180 
                 0.00165 
                 .015 × .035 
                   
                   
                   
                 285 
               
               
                 20 
                 0.00170 
                 0.00170 
                 0.00170 
                 .015 × .035 
                   
                   
                   
                 285 
               
               
                 Average 
                 0.001815 
                 0.001835 
                 0.00173 
                 .015 × .035 
                 0.1083 
                 0.1178 
                 0.1222 
                 291.9 
               
               
                 Standard 
                 7.47E − 05 
                 6.687E − 0.5 
                 9.18937E − 05 
                   
                 0.000671 
                 0.000447 
                 0.000447 
                 11.34754 
               
               
                   
               
               
                 Calculated K-stat (psi): 232.8587  
               
               
                 Calculated Hoop Stress (psi): 28594  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 3 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 440 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 21 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × 0.34 
                 0.110 
                 0.121 
                 0.125 
                 293 
               
               
                 22 
                 0.00160 
                 0.00160 
                 0.00160 
                 .017 × .034 
                 0.111 
                 0.121 
                 0.126 
                 270 
               
               
                 23 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × .034 
                 0.111 
                 0.120 
                 0.125 
                 293 
               
               
                 24 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × .034 
                 0.110 
                 0.121 
                 0.125 
                 291 
               
               
                 25 
                 0.00160 
                 0.00160 
                 0.00160 
                 .017 × .034 
                 0.110 
                 0.121 
                 0.125 
                 293 
               
               
                 26 
                 0.00155 
                 0.00150 
                 0.00150 
                 .017 × .034 
                   
                   
                   
                 283 
               
               
                 27 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × .034 
                   
                   
                   
                 293 
               
               
                 28 
                 0.00160 
                 0.00160 
                 0.00160 
                 .017 × .034 
                   
                   
                   
                 293 
               
               
                 29 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × .034 
                   
                   
                   
                 287 
               
               
                 30 
                 0.00170 
                 0.00170 
                 0.00170 
                 .017 × .034 
                   
                   
                   
                 293 
               
               
                 Average 
                 0.001655 
                 0.001650 
                 0.001650 
                 .017 × .034 
                 0.11040 
                 0.12060 
                 0.12520 
                 288.9 
               
               
                 Standard 
                 5.99E − 05 
                 7.071E − 0.5 
                 7.07107E − 05 
                   
                 0.000548 
                 0.000548 
                 0.000447 
                 7.460265 
               
               
                   
               
               
                 Calculated K-stat (psi): 250.0842  
               
               
                 Calculated Hoop Stress (psi): 21052  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 4 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 300 GRAMS 
               
               
                 NITROGEN 320 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 31 
                 0.00170 
                 0.00140 
                 0.00140 
                 .020 × 0.32 
                 0.117 
                 0.123 
                 0.128 
                 293 
               
               
                 32 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .032 
                 0.117 
                 0.123 
                 0.129 
                 249 
               
               
                 33 
                 0.00125 
                 0.00125 
                 0.00120 
                 .020 × .032 
                 0.117 
                 0.123 
                 0.129 
                 253 
               
               
                 34 
                 0.00135 
                 0.00130 
                 0.00120 
                 .020 × .032 
                 0.116 
                 0.123 
                 0.129 
                 251 
               
               
                 35 
                 0.00130 
                 0.00130 
                 0.00130 
                 .020 × .032 
                 0.116 
                 0.123 
                 0.128 
                 253 
               
               
                 36 
                 0.00130 
                 0.00140 
                 0.00135 
                 .020 × .032 
                   
                   
                   
                 243 
               
               
                 37 
                 0.00140 
                 0.00135 
                 0.00135 
                 .020 × .032 
                   
                   
                   
                 223 
               
               
                 38 
                 0.00130 
                 0.00130 
                 0.00130 
                 .020 × .032 
                   
                   
                   
                 253 
               
               
                 39 
                 0.00135 
                 0.00135 
                 0.00135 
                 .020 × .032 
                   
                   
                   
                 223 
               
               
                 40 
                 0.00135 
                 0.00135 
                 0.00125 
                 .020 × .032 
                   
                   
                   
                 253 
               
               
                 Average 
                 0.001360 
                 0.00134 
                 0.0013100 
                 .020 × .032 
                 0.1166 
                 0.123 
                 0.1286 
                 245.2 
               
               
                 Standard 
                 5.16E − 05 
                 5.164E − 0.5 
                 7.37865E − 05 
                   
                 0.000548 
                 1.86E − 09 
                 0.000548 
                 12.0904 
               
               
                   
               
               
                 Calculated K-stat (psi): 182.2936  
               
               
                 Calculated Hoop Stress (psi): 22176  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 5 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 41 
                 0.00160 
                 0.00160 
                 0.00160 
                 .020 × 0.35 
                 0.115 
                 0.125 
                 0.130 
                 253 
               
               
                 42 
                 0.00170 
                 0.00170 
                 0.00170 
                 .020 × .035 
                 0.117 
                 0.125 
                 0.130 
                 263 
               
               
                 43 
                 0.00160 
                 0.00170 
                 0.00170 
                 .020 × .035 
                 0.117 
                 0.125 
                 0.130 
                 269 
               
               
                 44 
                 0.00140 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.118 
                 0.126 
                 0.131 
                 253 
               
               
                 45 
                 0.00145 
                 0.00155 
                 0.00150 
                 .020 × .035 
                 0.114 
                 0.123 
                 0.129 
                 250 
               
               
                 46 
                 0.00160 
                 0.00160 
                 0.00160 
                 .020 × .035 
                   
                   
                   
                 269 
               
               
                 47 
                 0.00150 
                 0.00150 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 268 
               
               
                 48 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 239 
               
               
                 49 
                 0.00150 
                 0.00150 
                 0.00150 
                 .020 × .035 
                   
                   
                   
                 257 
               
               
                 50 
                 0.00150 
                 0.00150 
                 0.00150 
                 .020 × .035 
                   
                   
                   
                 257 
               
               
                 Average 
                 0.001525 
                 0.001555 
                 0.001540 
                 .020 × .035 
                 0.1162 
                 0.1248 
                 0.13 
                 257.8 
               
               
                 Standard 
                 9.79E − 05 
                 9.56E − 0.5 
                 0.000107497 
                   
                 0.001643 
                 0.001095 
                 0.000707 
                 9.681598 
               
               
                   
               
               
                 Calculated K-stat (psi): 270.4266  
               
               
                 Calculated Hoop Stress (psi): 22097  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 6 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 51 
                 0.00165 
                 0.00165 
                 0.0016 
                 .023 × .035 
                 0.118 
                 0.127 
                 0.136 
                 223 
               
               
                 52 
                 0.00130 
                 0.00130 
                 0.0013 
                 .023 × .035 
                 0.118 
                 0.130 
                 0.138 
                 223 
               
               
                 53 
                 0.00130 
                 0.00140 
                 0.0013 
                 .023 × .035 
                 0.117 
                 0.127 
                 0.135 
                 239 
               
               
                 54 
                 0.00140 
                 0.00140 
                 0.0014 
                 .023 × .035 
                 0.118 
                 0.128 
                 0.136 
                 239 
               
               
                 55 
                 0.00150 
                 0.00160 
                 0.0016 
                 .023 × .035 
                 0.118 
                 0.127 
                 0.136 
                 239 
               
               
                 56 
                 0.00150 
                 0.00150 
                 0.0015 
                 .023 × .035 
                   
                   
                   
                 250 
               
               
                 57 
                 0.00140 
                 0.00140 
                 0.0014 
                 .023 × .035 
                   
                   
                   
                 250 
               
               
                 58 
                 0.00130 
                 0.00130 
                 0.0013 
                 .023 × .035 
                   
                   
                   
                 238 
               
               
                 59 
                 0.00130 
                 0.00130 
                 0.0013 
                 .023 × .035 
                   
                   
                   
                 253 
               
               
                 60 
                 0.00130 
                 0.00130 
                 0.0013 
                 .023 × .035 
                   
                   
                   
                 239 
               
               
                 Average 
                 0.001395 
                 0.001415 
                 0.0014 
                 .023 × .035 
                 0.1178 
                 0.1278 
                 0.1362 
                 239.3 
               
               
                 Standard 
                 0.000121 
                 0.0001292 
                 0.000124722 
                   
                 0.000447 
                 0.001304 
                 0.001095 
                 10.27456 
               
               
                   
               
               
                 Calculated K-stat (psi): 185.8414  
               
               
                 Calculated Hoop Stress (psi): 21922  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 7 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 420 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 61 
                 0.00150 
                 0.00150 
                 0.0015 
                 .023 × .038 
                 0.118 
                 0.126 
                 0.134 
                 253 
               
               
                 62 
                 0.00150 
                 0.00150 
                 0.0015 
                 .023 × .038 
                 0.119 
                 0.126 
                 0.135 
                 253 
               
               
                 63 
                 0.00160 
                 0.00160 
                 0.0016 
                 .023 × .038 
                 0.121 
                 0.130 
                 0.138 
                 260 
               
               
                 64 
                 0.00160 
                 0.00160 
                 0.0016 
                 .023 × .038 
                 0.120 
                 0.127 
                 0.138 
                 245 
               
               
                 65 
                 0.00140 
                 0.00140 
                 0.0014 
                 .023 × .038 
                 0.120 
                 0.127 
                 0.139 
                 253 
               
               
                 66 
                 0.00160 
                 0.00160 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 253 
               
               
                 67 
                 0.00160 
                 0.00160 
                 0.0016 
                 .023 × .038 
                   
                   
                   
                 253 
               
               
                 68 
                 0.00160 
                 0.00160 
                 0.0016 
                 .023 × .038 
                   
                   
                   
                 263 
               
               
                 69 
                 0.00170 
                 0.00170 
                 0.0017 
                 .023 × .038 
                   
                   
                   
                 253 
               
               
                 70 
                 0.00145 
                 0.00145 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 258 
               
               
                 Average 
                 0.001555 
                 0.001555 
                 0.00155 
                 .023 × .038 
                 0.1196 
                 0.1272 
                 0.1368 
                 254.4 
               
               
                 Standard 
                 8.96E − 05 
                 8.96E − 05 
                 8.49837E − 05 
                   
                 0.00114 
                 0.001643 
                 0.002168 
                 4.926121 
               
               
                   
               
               
                 Calculated K-stat (psi): 228.7694  
               
               
                 Calculated Hoop Stress (psi): 20810  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 8 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 460 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 71 
                 0.00145 
                 0.00155 
                 0.00155 
                 .017 × .034 
                 0.1110 
                 0.119 
                 0.123 
                 305 
               
               
                 72 
                 0.00150 
                 0.00150 
                 0.00150 
                 .017 × .034 
                 0.1100 
                 0.120 
                 0.124 
                 307 
               
               
                 73 
                 0.00145 
                 0.00150 
                 0.00155 
                 .017 × .034 
                 0.1100 
                 0.118 
                 0.123 
                 293 
               
               
                 74 
                 0.00140 
                 0.00150 
                 0.00150 
                 .017 × .034 
                 0.1100 
                 0.120 
                 0.123 
                 323 
               
               
                 75 
                 0.00145 
                 0.00155 
                 0.00150 
                 .017 × .034 
                 0.1100 
                 0.118 
                 0.124 
                 309 
               
               
                 76 
                 0.00150 
                 0.00150 
                 0.00150 
                 .017 × .034 
                   
                   
                   
                 295 
               
               
                 77 
                 0.00150 
                 0.00140 
                 0.00145 
                 .017 × .034 
                   
                   
                   
                 323 
               
               
                 78 
                 0.00140 
                 0.00140 
                 0.00140 
                 .017 × .034 
                   
                   
                   
                 293 
               
               
                 79 
                 0.00150 
                 0.00150 
                 0.00150 
                 .017 × .034 
                   
                   
                   
                 320 
               
               
                 80 
                 0.00150 
                 0.00150 
                 0.00150 
                 .017 × .034 
                   
                   
                   
                 303 
               
               
                 Average 
                 0.001475 
                 0.00149 
                 0.001495 
                 .017 × .034 
                 0.1102 
                 0.119 
                 0.1234 
                 307.1 
               
               
                 Standard 
                 5.89E − 05 
                 5.164E − 05 
                 4.37798E − 05 
                   
                 0.000447 
                 0.001 
                 0.000548 
                 11.74214 
               
               
                   
               
               
                 Calculated K-stat (psi): 246.0057  
               
               
                 Calculated Hoop Stress (psi): 24776  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 9 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 205° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 380 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 81 
                 0.00115 
                 0.00115 
                 0.00115 
                 .020 × .032 
                 0.114 
                 0.120 
                 0.125 
                 270 
               
               
                 82 
                 0.00125 
                 0.00125 
                 0.00115 
                 .020 × .032 
                 0.113 
                 0.120 
                 0.125 
                 270 
               
               
                 83 
                 0.00130 
                 0.00139 
                 0.00120 
                 .020 × .032 
                 0.114 
                 0.120 
                 0.125 
                 270 
               
               
                 84 
                 0.00120 
                 0.00120 
                 0.00110 
                 .020 × .032 
                 0.113 
                 0.120 
                 0.125 
                 270 
               
               
                 85 
                 0.00120 
                 0.00120 
                 0.00115 
                 .020 × .032 
                 0.115 
                 0.121 
                 0.126 
                 270 
               
               
                 86 
                 0.00115 
                 0.00115 
                 0.00110 
                 .020 × .032 
                   
                   
                   
                 250 
               
               
                 87 
                 0.00115 
                 0.00120 
                 0.00110 
                 .020 × .032 
                   
                   
                   
                 271 
               
               
                 88 
                 0.00115 
                 0.00120 
                 0.00115 
                 .020 × .032 
                   
                   
                   
                 270 
               
               
                 89 
                 0.00125 
                 0.00120 
                 0.00120 
                 .020 × .032 
                   
                   
                   
                 270 
               
               
                 90 
                 0.00120 
                 0.00115 
                 0.00115 
                 .020 × .032 
                   
                   
                   
                 269 
               
               
                 Average 
                 0.0012 
                 0.0012 
                 0.001145 
                 .020 × .032 
                 0.1138 
                 0.1202 
                 0.1252 
                 268 
               
               
                 Standard 
                 5.27E − 05 
                 4.714E − 05 
                 3.68932E − 05 
                   
                 0.000837 
                 0.000447 
                 0.000447 
                 6.342099 
               
               
                   
               
               
                 Calculated K-stat (psi): 235.0021  
               
               
                 Calculated Hoop Stress (psi): 26844  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 10 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 250 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 91 
                 0.00130 
                 0.00135 
                 0.00140 
                 .020 × .035 
                 0.109 
                 0.119 
                 0.125 
                 295 
               
               
                 92 
                 0.00130 
                 0.00135 
                 0.00140 
                 .020 × .035 
                 0.115 
                 0.124 
                 0.128 
                 300 
               
               
                 93 
                 0.00130 
                 0.00135 
                 0.00130 
                 .020 × .035 
                 0.115 
                 0.122 
                 0.127 
                 289 
               
               
                 94 
                 0.00130 
                 0.00135 
                 0.00130 
                 .020 × .035 
                 0.113 
                 0.124 
                 0.130 
                 298 
               
               
                 95 
                 0.00130 
                 0.00140 
                 0.00130 
                 .020 × .035 
                 0.115 
                 0.124 
                 0.128 
                 283 
               
               
                 96 
                 0.00135 
                 0.00135 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 297 
               
               
                 97 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 297 
               
               
                 98 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 297 
               
               
                 99 
                 0.00140 
                 0.00130 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 290 
               
               
                 100  
                 0.00130 
                 0.00130 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 290 
               
               
                 Average 
                 0.001335 
                 0.001355 
                 0.001355 
                 .020 × .035 
                 0.1134 
                 0.1226 
                 0.1276 
                 293.6 
               
               
                 Standard 
                 4.74E − 05 
                 3.689E − 05 
                 4.97214E − 05 
                   
                 0.002608 
                 0.002191 
                 0.001817 
                 5.337498 
               
               
                   
               
               
                 Calculated K-stat (psi): 265.829  
               
               
                 Calculated Hoop Stress (psi): 26962  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 11 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 210° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 101 
                 0.0014 
                 0.0014 
                 0.00140 
                 .023 × .035 
                 0.115 
                 0.121 
                 0.127 
                 298 
               
               
                 102 
                 0.0013 
                 0.0013 
                 0.00125 
                 .023 × .035 
                 0.117 
                 0.126 
                 0.134 
                 253 
               
               
                 103 
                 0.0013 
                 0.0013 
                 0.00120 
                 .023 × .035 
                 0.117 
                 0.126 
                 0.131 
                 275 
               
               
                 104 
                 0.0013 
                 0.0013 
                 0.00130 
                 .023 × .035 
                 0.118 
                 0.126 
                 0.132 
                 238 
               
               
                 105 
                 0.0013 
                 0.0013 
                 0.00140 
                 .023 × .035 
                 0.116 
                 0.127 
                 0.133 
                 281 
               
               
                 106 
                 0.0013 
                 0.0013 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 280 
               
               
                 107 
                 0.0013 
                 0.0013 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 269 
               
               
                 108 
                 0.0012 
                 0.0012 
                 0.00130 
                 .023 × .035 
                   
                   
                   
                 280 
               
               
                 109 
                 0.0012 
                 0.0012 
                 0.00125 
                 .023 × .035 
                   
                   
                   
                 283 
               
               
                 110 
                 0.0012 
                 0.0012 
                 0.00125 
                 .023 × .035 
                   
                   
                   
                 283 
               
               
                 Average 
                 0.00128 
                 0.00128 
                 0.001315 
                 .023 × .035 
                 0.1166 
                 0.1252 
                 0.1314 
                 274 
               
               
                 Standard 
                 6.32E − 05 
                 6.325E − 05 
                 7.83511E − 05 
                   
                 0.00114 
                 0.002387 
                 0.002702 
                 17.06849 
               
               
                   
               
               
                 Calculated K-stat (psi): 185.1926  
               
               
                 Calculated Hoop Stress (psi): 26800  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 12 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 210° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 420 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 111 
                 0.00150 
                 0.0015 
                 0.0014 
                 .023 × .038 
                 0.119 
                 0.125 
                 0.130 
                 310 
               
               
                 112 
                 0.00160 
                 0.0016 
                 0.0016 
                 .023 × .038 
                 0.118 
                 0.125 
                 0.130 
                 300 
               
               
                 113 
                 0.00160 
                 0.0016 
                 0.0016 
                 .023 × .038 
                 0.118 
                 0.125 
                 0.130 
                 293 
               
               
                 114 
                 0.00150 
                 0.0015 
                 0.0015 
                 .023 × .038 
                 0.118 
                 0.126 
                 0.131 
                 283 
               
               
                 115 
                 0.00150 
                 0.0015 
                 0.0015 
                 .023 × .038 
                 0.119 
                 0.125 
                 0.130 
                 280 
               
               
                 116 
                 0.00150 
                 0.0016 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 300 
               
               
                 117 
                 0.00145 
                 0.0015 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 310 
               
               
                 118 
                 0.00160 
                 0.0016 
                 0.0016 
                 .023 × .038 
                   
                   
                   
                 298 
               
               
                 119 
                 0.00150 
                 0.0015 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 298 
               
               
                 120 
                 0.00145 
                 0.0015 
                 0.0015 
                 .023 × .038 
                   
                   
                   
                 313 
               
               
                 Average 
                 0.00152 
                 0.00154 
                 0.00152 
                 .023 × .038 
                 0.1184 
                 0.1252 
                 0.1302 
                 298.5 
               
               
                 Standard 
                 5.87E − 05 
                 5.164E − 05 
                 6.32456E − 05 
                   
                 0.000548 
                 0.000447 
                 0.000447 
                 11.01766 
               
               
                   
               
               
                 Calculated K-stat (psi): 241.1751  
               
               
                 Calculated Hoop Stress (psi): 24586  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 13 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 300 GRAMS 
               
               
                 NITROGEN 460 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 121 
                 0.00110 
                 0.00120 
                 0.00110 
                 .017 × .031 
                 0.108 
                 0.116 
                 0.120 
                 330 
               
               
                 122 
                 0.00120 
                 0.00135 
                 0.00120 
                 017 × 031 
                 0.106 
                 0.115 
                 0.119 
                 345 
               
               
                 123 
                 0.00130 
                 0.00140 
                 0.00135 
                 017 × 031 
                 0.106 
                 0.116 
                 0.120 
                 300 
               
               
                 124 
                 0.00130 
                 0.00130 
                 0.00120 
                 017 × 031 
                 0.106 
                 0.116 
                 0.120 
                 345 
               
               
                 125 
                 0.00130 
                 0.00130 
                 0.00125 
                 017 × 031 
                 0.108 
                 0.116 
                 0.120 
                 360 
               
               
                 126 
                 0.00135 
                 0.00130 
                 0.00120 
                 017 × 031 
                   
                   
                   
                 345 
               
               
                 127 
                 0.00145 
                 0.00130 
                 0.00130 
                 017 × 031 
                   
                   
                   
                 375 
               
               
                 128 
                 0.00130 
                 0.00130 
                 0.00130 
                 017 × 031 
                   
                   
                   
                 330 
               
               
                 129 
                 0.00145 
                 0.00130 
                 0.00140 
                 017 × 031 
                   
                   
                   
                 300 
               
               
                 130 
                 0.00140 
                 0.00140 
                 0.00135 
                 017 × 031 
                   
                   
                   
                 345 
               
               
                 Average 
                 0.001315 
                 0.001315 
                 0.001265 
                 .017 × .031 
                 0.10680 
                 0.11580 
                 0.11980 
                 337.5 
               
               
                 Standard 
                 0.000108 
                 5.798E − 05 
                 9.14391 E − 05 
                   
                 0.001095 
                 0.000447 
                 0.000447 
                 23.71708 
               
               
                   
               
               
                 Calculated K-stat (psi): 214.1  
               
               
                 Calculated Hoop Stress (psi): 29720  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 14 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 212° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 500 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 131 
                 0.00150 
                 0.00150 
                 0.0015 
                 .017 × .034 
                 0.11 
                 0.116 
                 0.121 
                 303 
               
               
                 132 
                 0.00160 
                 0.00160 
                 0.0016 
                 .017 × .034 
                 0.11 
                 0.116 
                 0.121. 
                 280 
               
               
                 133 
                 0.00160 
                 0.00160 
                 0.0016 
                 .017 × .034 
                 0.11 
                 0.116 
                 0.121 
                 353 
               
               
                 134 
                 0.00155 
                 0.00155 
                 0.0015 
                 .017 × .034 
                 0.11 
                 0.117 
                 0.120 
                 340 
               
               
                 135 
                 0.00160 
                 0.00160 
                 0.0016 
                 .017 × .034 
                 0.11 
                 0.116 
                 0.121 
                 348 
               
               
                 136 
                 0.00160 
                 0.00160 
                 0.0016 
                 .017 × .034 
                   
                   
                   
                 338 
               
               
                 137 
                 0.00160 
                 0.00160 
                 0.0016 
                 .017 × .034 
                   
                   
                   
                 350 
               
               
                 138 
                 0.00170 
                 0.00170 
                 0.0017 
                 .017 × .034 
                   
                   
                   
                 369 
               
               
                 139 
                 0.00170 
                 0.00170 
                 0.0017 
                 .017 × .034 
                   
                   
                   
                 318 
               
               
                 140 
                 0.00170 
                 0.00170 
                 0.0017 
                 .017 × .034 
                   
                   
                   
                 353 
               
               
                 Average 
                 0.001615 
                 0.001615 
                 0.00161 
                 .017 × .034 
                 0.11 
                 0.1162 
                 0.1208 
                 335.2 
               
               
                 Standard 
                 6.69E − 05 
                 6.687E − 05 
                 7.37865E − 05 
                   
                 0.0 
                 0.000447 
                 0.000447 
                 27.01769 
               
               
                   
               
               
                 Calculated K-stat (psi): 194.627  
               
               
                 Calculated Hoop Stress (psi): 24117  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 15 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 210° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 141 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                 0.112 
                 0.120 
                 0.125 
                 359 
               
               
                 142 
                 0.00140 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.112 
                 0.118 
                 0.125 
                 325 
               
               
                 143 
                 0.00140 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.113 
                 0.118 
                 0.123 
                 329 
               
               
                 144 
                 0.00150 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.111 
                 0.120 
                 0.123 
                 359 
               
               
                 145 
                 0.00150 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.113 
                 0.120 
                 0.124 
                 350 
               
               
                 146 
                 0.00145 
                 0.00150 
                 0.00150 
                 .020 × .035 
                   
                   
                   
                 330 
               
               
                 147 
                 0.00150 
                 0.00160 
                 0.00160 
                 .020 × .035 
                   
                   
                   
                 343 
               
               
                 148 
                 0.00140 
                 0.00130 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 353 
               
               
                 148 
                 0.00155 
                 0.00155 
                 0.00155 
                 .020 × .035 
                   
                   
                   
                 309 
               
               
                 150 
                 0.00150 
                 0.00150 
                 0.00150 
                 .020 × .035 
                   
                   
                   
                 343 
               
               
                 Average 
                 0.00146 
                 0.001485 
                 0.001485 
                 .020 × .035 
                 0.1122 
                 0.1192 
                 0.124 
                 340 
               
               
                 Standard 
                 5.68E − 05 
                 8.182E − 05 
                 8.18196E − 05 
                   
                 0.000837 
                 0.001095 
                 0.001 
                 16.38427 
               
               
                   
               
               
                 Calculated K-stat (psi): 254.7526  
               
               
                 Calculated Hoop Stress (psi): 27018  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 16 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 205° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 320 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 151 
                 0.0013 
                 0.00125 
                 0.001250 
                 .020 × .032 
                 0.114 
                 0.119 
                 0.123 
                 357 
               
               
                 152 
                 0.0013 
                 0.00135 
                 0.001300 
                 .020 × .032 
                 0.113 
                 0.119 
                 0.123 
                 359 
               
               
                 153 
                 0.0013 
                 0.00120 
                 0.001200 
                 .020 × .032 
                 0.113 
                 0.119 
                 0.123 
                 359 
               
               
                 154 
                 0.0012 
                 0.00125 
                 0.001200 
                 .020 × .032 
                 0.112 
                 0.119 
                 0.123 
                 369 
               
               
                 155 
                 0.0013 
                 0.00120 
                 0.001200 
                 .020 × .032 
                 0.113 
                 0.118 
                 0.123 
                 353 
               
               
                 156 
                 0.0012 
                 0.00125 
                 0.001250 
                 .020 × .032 
                   
                   
                   
                 343 
               
               
                 157 
                 0.0014 
                 0.00135 
                 0.001350 
                 .020 × .032 
                   
                   
                   
                 359 
               
               
                 158 
                 0.0013 
                 0.00130 
                 0.001300 
                 .020 × .032 
                   
                   
                   
                 359 
               
               
                 159 
                 0.0012 
                 0.00120 
                 0.001150 
                 .020 × .032 
                   
                   
                   
                 361 
               
               
                 160 
                 0.0013 
                 0.00130 
                 0.001250 
                 .020 × .032 
                   
                   
                   
                 313 
               
               
                 Average 
                 0.00126 
                 0.001265 
                 0.001245 
                 .020 × .032 
                 0.113 
                 0.1188 
                 0.12300 
                 353.2 
               
               
                 Standard 
                 4.9721E − 05 
                 5.798E − 05 
                 5.98609E − 05 
                   
                 0.000707 
                 0.000447 
                 1.86E − 
                 15.56206 
               
               
                   
                   
                   
                   
                   
                   
                   
                 09 
               
               
                   
               
               
                 Calculated K-stat (psi): 272.2306  
               
               
                 Calculated Hoop Stress (psi): 33342  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 17 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 210° F. 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 380 GRAMS 
               
               
                 NITROGEN 400 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 161 
                 0.00140 
                 0.00140 
                 0.00140 
                 .023 × .035 
                 0.116 
                 0.122 
                 0.126 
                 329 
               
               
                 162 
                 0.00150 
                 0.00150 
                 0.00140 
                 .023 × .035 
                 0.116 
                 0.122 
                 0.127 
                 329 
               
               
                 163 
                 0.00140 
                 0.00140 
                 0.00150 
                 .023 × .035 
                 0.116 
                 0.123 
                 0.128 
                 330 
               
               
                 164 
                 0.00140 
                 0.00140 
                 0.00150 
                 .023 × .035 
                 0.116 
                 0.123 
                 0.128 
                 270 
               
               
                 165 
                 0.00135 
                 0.00135 
                 0.00135 
                 .023 × .035 
                 0.117 
                 0.124 
                 0.129 
                 343 
               
               
                 166 
                 0.00140 
                 0.00140 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 300 
               
               
                 167 
                 0.00140 
                 0.00140 
                 0.00150 
                 .023 × .035 
                   
                   
                   
                 345 
               
               
                 168 
                 0.00140 
                 0.00140 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 329 
               
               
                 169 
                 0.00140 
                 0.00140 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 330 
               
               
                 170 
                 0.00140 
                 0.00140 
                 0.00140 
                 .023 × .035 
                   
                   
                   
                 330 
               
               
                 Average 
                 0.001405 
                 0.001405 
                 0.001425 
                 .023 × .035 
                 0.1162 
                 0.1228 
                 0.1276 
                 323.5 
               
               
                 Standard 
                 3.69E − 05 
                 3.689E − 05 
                 5.40062E − 05 
                   
                 0.000447 
                 0.000837 
                 0.00114 
                 22.29723 
               
               
                   
               
               
                 Calculated K-stat (psi): 207.4875  
               
               
                 Calculated Hoop Stress (psi): 28274  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 18 
               
             
             
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                 PARAMETERS: 
               
               
                 HOT POT: 
               
               
                 COLD POT: ROOM TEMP. 
               
               
                 WEIGHT: 350 GRAMS 
               
               
                 NITROGEN 420 PSI 
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 171 
                 0.00160 
                 0.00160 
                 0.001550 
                 .023 × .038 
                 0.114 
                 0.120 
                 0.126 
                 375 
               
               
                 172 
                 0.00160 
                 0.00160 
                 0.001600 
                 .023 × .038 
                 0.115 
                 0.122 
                 0.126 
                 300 
               
               
                 173 
                 0.00165 
                 0.00160 
                 0.001500 
                 .023 × .038 
                 0.119 
                 0.125 
                 0.128 
                 298 
               
               
                 174 
                 0.00160 
                 0.00165 
                 0.001600 
                 .023 × .038 
                 0.116 
                 0.122 
                 0.127 
                 328 
               
               
                 175 
                 0.00160 
                 0.00160 
                 0.001600 
                 .023 × .038 
                 0.116 
                 0.123 
                 0.126 
                 343 
               
               
                 176 
                 0.00170 
                 0.00170 
                 0.001700 
                 .023 × .038 
                   
                   
                   
                 370 
               
               
                 177 
                 0.00160 
                 0.00170 
                 0.001600 
                 .023 × .038 
                   
                   
                   
                 370 
               
               
                 178 
                 0.00170 
                 0.00170 
                 0.001700 
                 .023 × .038 
                   
                   
                   
                 355 
               
               
                 179 
                 0.00165 
                 0.00170 
                 0.001650 
                 .023 × .038 
                   
                   
                   
                 358 
               
               
                 180 
                 0.00170 
                 0.00170 
                 0.001700 
                 .023 × .038 
                   
                   
                   
                 373 
               
               
                 Average 
                 0.00164 
                 0.001655 
                 0.00162 
                 .023 × .038 
                 0.116 
                 0.1224 
                 0.1266 
                 347 
               
               
                 Standard 
                 4.59E − 05 
                 4.972E − 05 
                 6.74949E − 05 
                   
                 0.001871 
                 0.001817 
                 0.000894 
                 29.23088 
               
               
                   
               
               
                 Calculated K-stat (psi): 194.9117  
               
               
                 Calculated Hoop Stress (psi): 25898  
               
             
          
         
       
     
     Examples 181-206 
     26 balloons were made according to the process described for Examples 1-180, except that the mold apparatus did not utilize weights  22  separately, but rather incorporated a preselected weight into handle  20 . 
     The balloons were tested to measure distension and balloon burst strength. Distension is defined as the ratio of two balloon diameters. In this test, a balloon was inflated to a series of pressures. The diameter was measured at each pressure. The distension is the ratio of the diameter at the lowest pressure to the diameter at the highest pressure. Inflation was performed at 1 bar increments up to burst pressure. 
     To test the balloons, the balloons were first placed in temperature controlled water bath, and warmed for a minimum of 1 minute in water. The balloons were then attached to a pneumatic inflation/deflation device. A vacuum was created. Starting with a 4 bar pressure for 20 seconds, the balloon diameter and length were measured. The balloons were deflated, and the measurements were recorded. Increasing the pressure by 1 bar, the balloon diameters and lengths were measured. This procedure was repeated until the balloons bursted. The burst pressure and the type of burst profile were recorded. 
     Tables 19-21 below show the results of the testing of the expander members. 
     
       
         
               
             
               
               
               
             
               
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 19 
               
             
             
               
                   
               
               
                 PEBAX GRADE 7233 
               
               
                 Tubing Dimensions (ID × OD): 0.48 × 0.81 mm 
               
               
                 Balloon Dimensions (OD × length): 3.0 × 20 mm 
               
               
                 Diameter Form: 3.00 mm 
               
             
          
           
               
                   
                 DIAMETER (mm) 
                   
               
               
                   
                 Balloon Number 
               
             
          
           
               
                 atm 
                 181 
                 182 
                 183 
                 184 
                 185 
                 186 
                 187 
                 188 
                 189 
                 190 
                 Average 
               
               
                   
               
               
                  4 
                 2.57 
                 2.60 
                 3 
                 2.60 
                 2.57 
                 2.55 
                 2.54 
                 2.54 
                 2.61 
                 2.57 
                 2.58 
               
               
                  6 
                 2.79 
                 2.81 
                 3 
                 2.81 
                 2.79 
                 2.79 
                 2.70 
                 2.75 
                 2.78 
                 2.80 
                 2.78 
               
               
                  8 
                 2.91 
                 2.94 
                 3 
                 2.93 
                 2.93 
                 2.95 
                 2.89 
                 2.88 
                 2.93 
                 2.93 
                 2.92 
               
               
                 10 
                 3.01 
                 3.01 
                 3 
                 3.02 
                 3.02 
                 3.01 
                 2.99 
                 3.00 
                 3.00 
                 3.02 
                 3.01 
               
               
                 12 
                 3.06 
                 3.07 
                 3 
                 3.08 
                 3.09 
                 3.08 
                 3.03 
                 3.05 
                 3.06 
                 3.07 
                 3.07 
               
               
                 14 
                 3.12 
                 3.14 
                 3 
                 3.13 
                 3.12 
                 3.12 
                 3.09 
                 3.11 
                 3.12 
                 3.12 
                 3.12 
               
               
                 16 
                 3.17 
                 3.17 
                 3 
                 3.17 
                 3.18 
                 3.17 
                 3.14 
                 3.16 
                 3.16 
                 3.18 
                 3.17 
               
               
                 18 
                 3.23 
                 3.24 
                 3 
                 3.25 
                 3.24 
                 3.23 
                 3.21 
                 3.22 
                 3.23 
                 3.23 
                 3.23 
               
               
                   
               
               
                 Average burst pressure 21.1 atm  
               
               
                 Minimum burst pressure 20.0 atm  
               
               
                 Maximum burst pressure 22.0 atm  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 20 
               
             
             
               
                   
               
               
                 PEBAX GRADE 7233 
               
               
                 Tubing Dimensions (ID × OD): 0.48 × 0.82 mm 
               
               
                 Balloon Dimensions (OD × length): 3.0 × 20 mm 
               
               
                 Diameter Form: 3.25 mm 
               
             
          
           
               
                   
                 DIAMETER (mm) 
                   
               
               
                   
                 Balloon Number 
               
             
          
           
               
                 atm 
                 191 
                 192 
                 193 
                 194 
                 195 
                 196 
                 197 
                 198 
                 Average 
               
               
                   
               
               
                  4 
                 2.73 
                 2.74 
                 2.66 
                 2.71 
                 2.69 
                 2.71 
                 2.70 
                 2.77 
                 2.71 
               
               
                  6 
                 2.97 
                 2.93 
                 2.89 
                 2.92 
                 2.92 
                 2.94 
                 2.97 
                 3.01 
                 2.94 
               
               
                  8 
                 3.12 
                 3.06 
                 3.03 
                 3.08 
                 3.06 
                 3.07 
                 3.08 
                 3.12 
                 3.08 
               
               
                 10 
                 3.18 
                 3.12 
                 3.15 
                 3.16 
                 3.12 
                 3.17 
                 3.18 
                 3.19 
                 3.16 
               
               
                 12 
                 3.23 
                 3.20 
                 3.22 
                 3.23 
                 3.19 
                 3.23 
                 3.23 
                 3.26 
                 3.22 
               
               
                 14 
                 3.30 
                 3.27 
                 3.27 
                 3.27 
                 3.25 
                 3.28 
                 3.28 
                 3.33 
                 3.28 
               
               
                 16 
                 3.33 
                 3.31 
                 3.31 
                 3.30 
                 3.29 
                 3.32 
                 3.32 
                 3.36 
                 3.32 
               
               
                 18 
                 3.39 
                 3.33 
                 3.37 
                 3.37 
                 3.36 
                 3.40 
                 3.39 
                 3.43 
                 3.38 
               
               
                   
               
               
                 Average burst pressure 21.4 atm  
               
               
                 Minimum burst pressure 20.0 atm  
               
               
                 Maximum burst pressure 22.0 atm  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
             
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 21 
               
             
             
               
                   
               
               
                 PEBAX GRADE 7233 
               
               
                 Tubing Dimensions (ID × OD): 0.65 × 0.90 mm 
               
               
                 Balloon Dimensions (OD × length): 3.0 × 20 mm 
               
               
                 Diameter Form: 3.25 mm 
               
             
          
           
               
                   
                 DIAMETER (mm) 
                   
               
               
                   
                 Balloon Number 
               
             
          
           
               
                 atm 
                 199 
                 200 
                 201 
                 202 
                 203 
                 204 
                 205 
                 206 
                 Average 
               
               
                   
               
               
                  4 
                 2.91 
                 2.92 
                 2.94 
                 2.91 
                 2.87 
                 2.85 
                 2.93 
                 2.99 
                 2.92 
               
               
                  6 
                 3.17 
                 3.15 
                 3.16 
                 3.13 
                 3.14 
                 3.10 
                 3.17 
                 3.19 
                 3.15 
               
               
                  8 
                 3.28 
                 3.32 
                 3.29 
                 3.29 
                 3.28 
                 3.25 
                 3.31 
                 3.33 
                 3.29 
               
               
                 10 
                 3.40 
                 3.44 
                 3.41 
                 3.39 
                 3.40 
                 3.36 
                 3.42 
                 3.44 
                 3.41 
               
               
                 12 
                 3.52 
                 3.52 
                 3.49 
                 3.52 
                 3.51 
                 3.48 
                 3.52 
                 3.53 
                 3.51 
               
               
                 14 
                 3.66 
                 3.65 
                 3.64 
                 3.65 
                 3.65 
                 3.62 
                 3.66 
                 3.66 
                 3.65 
               
               
                 16 
                 3.79 
                 3.79 
                 3.82 
                 3.83 
                 3.80 
                 3.78 
                 3.82 
                 3.85 
                 3.81 
               
               
                 18 
                 4.05 
                 — 
                 — 
                 — 
                 4.06 
                 4.08 
                 4.05 
                 4.17 
                 4.08 
               
               
                   
               
               
                 Average burst pressure 19.3 atm  
               
               
                 Minimum burst pressure 18.0 atm  
               
               
                 Maximum burse pressure 20.0 atm  
               
             
          
         
       
     
     Examples 207-236 
     30 balloons were made according to the procedure described above for Examples 1-180, except that parisons had inside diameters of about 0.025 inches and wall thicknesses of about 0.0065 inches. 
     The balloons were tested according to the procedure described above for Examples 1-180, except that outside diameters were measured at 1 atm increments from 4-16 atms, and then the balloons were burst. 
     Tables 22-28 below list certain parameters (PEBAX grade, dimensions, cone angle, rated burst, and hold time representing the total amount of time that the mold was held in the water). The tables also show results of the testing of the expander members. 
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 22 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 Pebax Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 207 
                 208 
                 209 
                 210 
                 211 
               
               
                   
               
               
                  4 
                 58.8 
                 .111 
                 .111 
                 .112 
                 .112 
                 .112 
               
               
                  5 
                 73.5 
                 .113 
                 .114 
                 .115 
                 .114 
                 .115 
               
               
                  6 
                 88.2 
                 .116 
                 .116 
                 .117 
                 .116 
                 .117 
               
               
                  7 
                 102.5 
                 .118 
                 .117 
                 .118 
                 .117 
                 .118 
               
               
                  8 
                 117.6 
                 .119 
                 .119 
                 .119 
                 .118 
                 .119 
               
               
                  9 
                 132.3 
                 .120 
                 .120 
                 .120 
                 .119 
                 .120 
               
               
                 10 
                 147.0 
                 .122 
                 .121 
                 .121 
                 .120 
                 .121 
               
               
                 11 
                 161.7 
                 .122 
                 .122 
                 .122 
                 .121 
                 .122 
               
               
                 12 
                 176.4 
                 .123 
                 .123 
                 .123 
                 .122 
                 .123 
               
               
                 13 
                 191.1 
                 .124 
                 .124 
                 .124 
                 .123 
                 .124 
               
               
                 14 
                 205.8 
                 .125 
                 .125 
                 .125 
                 .124 
                 .125 
               
               
                 15 
                 220.5 
                 .126 
                 .126 
                 .125 
                 .125 
                 .126 
               
               
                 16 
                 235.2 
                 .127 
                 .127 
                 .126 
                 .125 
                 .127 
               
             
          
           
               
                 Burst Pressure (psi) 
                 278 
                 249 
                 278 
                 307 
                 291 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 23 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 Pebax Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 212 
                 213 
                 214 
                 215 
                 216 
               
               
                   
               
               
                  4 
                 58.8 
                 .113 
                 .113 
                 .111 
                 .112 
                 .111 
               
               
                  5 
                 73.5 
                 .115 
                 .115 
                 .114 
                 .114 
                 .114 
               
               
                  6 
                 88.2 
                 .117 
                 .117 
                 .116 
                 .116 
                 .116 
               
               
                  7 
                 102.5 
                 .118 
                 .118 
                 .118 
                 .118 
                 .117 
               
               
                  8 
                 117.6 
                 .119 
                 .119 
                 .119 
                 .119 
                 .118 
               
               
                  9 
                 132.3 
                 .120 
                 .120 
                 .120 
                 .120 
                 .120 
               
               
                 10 
                 147.0 
                 .121 
                 .121 
                 .121 
                 .121 
                 .120 
               
               
                 11 
                 161.7 
                 .122 
                 .122 
                 .122 
                 .122 
                 .121 
               
               
                 12 
                 176.4 
                 .123 
                 .123 
                 .123 
                 .123 
                 .122 
               
               
                 13 
                 191.1 
                 .124 
                 .124 
                 .124 
                 .124 
                 .123 
               
               
                 14 
                 205.8 
                 .125 
                 .125 
                 .125 
                 .125 
                 .124 
               
               
                 15 
                 220.5 
                 .126 
                 .126 
                 .126 
                 .126 
                 .125 
               
               
                 16 
                 235.2 
                 .127 
                 .127 
                 .127 
                 .127 
                 .126 
               
             
          
           
               
                 Burst Pressure (psi) 
                 266 
                 264 
                 280 
                 290 
                 280 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 24 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 PEBAX Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 217 
                 218 
                 219 
                 220 
                 221 
               
               
                   
               
               
                  4 
                 58.8 
                 .109 
                 .110 
                 .110 
                 .109 
                 .109 
               
               
                  5 
                 73.5 
                 .112 
                 .114 
                 .114 
                 .112 
                 .114 
               
               
                  6 
                 88.2 
                 .114 
                 .116 
                 .115 
                 .114 
                 .116 
               
               
                  7 
                 102.5 
                 .116 
                 .117 
                 .117 
                 .116 
                 .118 
               
               
                  8 
                 117.6 
                 .117 
                 .119 
                 .118 
                 .117 
                 .119 
               
               
                  9 
                 132.3 
                 .119 
                 .119 
                 .120 
                 .119 
                 .120 
               
               
                 10 
                 147.0 
                 .120 
                 .120 
                 .121 
                 .120 
                 .121 
               
               
                 11 
                 161.7 
                 .121 
                 .121 
                 .122 
                 .121 
                 .122 
               
               
                 12 
                 176.4 
                 .122 
                 .122 
                 .123 
                 .122 
                 .123 
               
               
                 13 
                 191.1 
                 .123 
                 .124 
                 .124 
                 .123 
                 .124 
               
               
                 14 
                 205.8 
                 .124 
                 .125 
                 .125 
                 .124 
                 .125 
               
               
                 15 
                 220.5 
                 .125 
                 .126 
                 .126 
                 .125 
                 .126 
               
               
                 16 
                 235.2 
                 .125 
                 .127 
                 .127 
                 .126 
                 .127 
               
             
          
           
               
                 Burst Pressure (psi) 
                 290 
                 250 
                 250 
                 250 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 25 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 PEBAX Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 222 
                 223 
                 224 
                 225 
                 226 
               
               
                   
               
               
                  4 
                 58.8 
                 .108 
                 .111 
                 .111 
                 .111 
                 .110 
               
               
                  5 
                 73.5 
                 .110 
                 .114 
                 .114 
                 .113 
                 .113 
               
               
                  6 
                 88.2 
                 .112 
                 .116 
                 .116 
                 .115 
                 .115 
               
               
                  7 
                 102.5 
                 .114 
                 .118 
                 .117 
                 .117 
                 .117 
               
               
                  8 
                 11.6 
                 .116 
                 .119 
                 .118 
                 .118 
                 .118 
               
               
                  9 
                 132.3 
                 .117 
                 .120 
                 .120 
                 .119 
                 .119 
               
               
                 10 
                 147.0 
                 .119 
                 .121 
                 .121 
                 .120 
                 .120 
               
               
                 11 
                 161.7 
                 .120 
                 .122 
                 .122 
                 .121 
                 .121 
               
               
                 12 
                 176.4 
                 .121 
                 .123 
                 .123 
                 .122 
                 .122 
               
               
                 13 
                 191.1 
                 .122 
                 .124 
                 .124 
                 .123 
                 .123 
               
               
                 14 
                 205.8 
                 .123 
                 .125 
                 .125 
                 .124 
                 .124 
               
               
                 15 
                 220.5 
                 .124 
                 .126 
                 .126 
                 .125 
                 .125 
               
               
                 16 
                 235.2 
                 .125 
                 .127 
                 .127 
                 .126 
                 .126 
               
             
          
           
               
                 Burst Pressure (psi) 
                 264 
                 280 
                 260 
                 280 
                 290 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 26 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 PEBAX Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 227 
                 228 
                 229 
                 230 
                 231 
               
               
                   
               
               
                  4 
                 58.8 
                 .111 
                 .111 
                 .110 
                 .111 
                 .110 
               
               
                  5 
                 73.5 
                 .113 
                 .114 
                 .113 
                 .113 
                 .113 
               
               
                  6 
                 88.2 
                 .115 
                 .116 
                 .114 
                 .115 
                 .115 
               
               
                  7 
                 102.5 
                 .117 
                 .118 
                 .116 
                 .117 
                 .117 
               
               
                  8 
                 117.6 
                 .119 
                 .119 
                 .118 
                 .118 
                 .118 
               
               
                  9 
                 132.3 
                 .120 
                 .120 
                 .119 
                 .119 
                 .119 
               
               
                 10 
                 147.0 
                 .121 
                 .121 
                 .120 
                 .120 
                 .120 
               
               
                 11 
                 161.7 
                 .122 
                 .122 
                 .121 
                 .121 
                 .121 
               
               
                 12 
                 176.4 
                 .123 
                 .123 
                 .123 
                 .122 
                 .122 
               
               
                 13 
                 191.1 
                 .123 
                 .124 
                 .124 
                 .123 
                 .123 
               
               
                 14 
                 205.8 
                 .124 
                 .125 
                 .125 
                 .124 
                 .124 
               
               
                 15 
                 220.5 
                 .125 
                 .126 
                 .126 
                 .125 
                 .125 
               
               
                 16 
                 235.2 
                 .126 
                 .127 
                 .127 
                 .126 
                 .126 
               
             
          
           
               
                 Burst Pressure (psi) 
                 278 
                 280 
                 265 
                 260 
                 260 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 27 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
             
          
           
               
                 PEBAX Grade: 
                 7233 
               
               
                 Dimensions (dia. × lgt.): 
                 3.0 × 20 mm 
               
               
                 Cone Angle: 
                 10 degrees 
               
               
                 Rated Burst: 
                 176 psi 
               
               
                 Hold (Secs.) 
                 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 232 
                 233 
                 234 
                 235 
                 236 
               
               
                   
               
               
                  4 
                 58.8 
                 .111 
                 .111 
                 .110 
                 .111 
                 .112 
               
               
                  5 
                 73.5 
                 .114 
                 .114 
                 .113 
                 .114 
                 .115 
               
               
                  6 
                 88.2 
                 .116 
                 .116 
                 .116 
                 .116 
                  .1165 
               
               
                  7 
                 102.5 
                 .117 
                 .117 
                 .117 
                 .117 
                 .118 
               
               
                  8 
                 117.6 
                 .119 
                 .190 
                 .118 
                 .1185 
                 .119 
               
               
                  9 
                 132.3 
                 .120 
                 .120 
                 .119 
                 .120  
                 .120 
               
               
                 10 
                 147.0 
                 .121 
                 .121 
                  .1205 
                 .121 
                 .121 
               
               
                 11 
                 161.7 
                 .122 
                 .122 
                 .122 
                 .122 
                 .122 
               
               
                 12 
                 176.4 
                  .1225 
                 .123 
                 .123 
                 .123 
                 .123 
               
               
                 13 
                 191.1 
                 .124 
                 .124 
                 .124 
                 .124 
                 .124 
               
               
                 14 
                 205.8 
                 .124 
                 .125 
                 .125 
                 .125 
                 .125 
               
               
                 15 
                 220.5 
                 .125 
                 .126 
                 .125 
                 .126 
                 .126 
               
               
                 16 
                 235.2 
                 .126 
                 .127 
                 .126 
                 .127 
                 .127 
               
             
          
           
               
                 Burst Pressure (psi) 
                 265 
                 280 
                 305 
                 278 
                 260 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
             
               
               
               
               
               
             
           
               
                 TABLE 28 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 MEASUREMENTS BEFORE TESTING 
               
             
          
           
               
                   
                 Double Wall Thickness Measurements 
               
             
          
           
               
                   
                 Proximal Side-Body 
                 Center 
                 Distal Side-Body 
               
               
                   
                   
               
             
          
           
               
                   
                 207 
                 .00175 
                 .00120 
                 .00135 
               
               
                   
                 208 
                 .00145 
                 .00140 
                 .00120 
               
               
                   
                 209 
                 .00130 
                 .00140 
                 .00140 
               
               
                   
                 210 
                 .00140 
                 .00150 
                 .00140 
               
               
                   
                 211 
                 .00165 
                 .00175 
                 .00185 
               
               
                   
                 212 
                 .00135 
                 .00120 
                 .00115 
               
               
                   
                 213 
                 .00150 
                 .00140 
                 .00120 
               
               
                   
                 214 
                 .00135 
                 .00120 
                 .00115 
               
               
                   
                 215 
                 .00155 
                 .00130 
                 .00120 
               
               
                   
                 216 
                 .00135 
                 .00120 
                 .00125 
               
               
                   
                 217 
                 .00140 
                 .00135 
                 .00145 
               
               
                   
                 218 
                 .00165 
                 .00130 
                 .00125 
               
               
                   
                 219 
                 .00145 
                 .00135 
                 .00130 
               
               
                   
                 220 
                 .00155 
                 .00120 
                 .00140 
               
               
                   
                 221 
                 .00135 
                 .00120 
                 .00120 
               
               
                   
                 222 
                 .00155 
                 .00135 
                 .00140 
               
               
                   
                 223 
                 .00140 
                 .00130 
                 .00135 
               
               
                   
                 224 
                 .00145 
                 .00135 
                 .00120 
               
               
                   
                 225 
                 .00160 
                 .00135 
                 .00125 
               
               
                   
                 226 
                 .00150 
                 .00135 
                 .00130 
               
               
                   
                 227 
                 .00155 
                 .00135 
                 .00135 
               
               
                   
                 228 
                 .00155 
                 .00150 
                 .00135 
               
               
                   
                 229 
                 .00150 
                 .00135 
                 .00130 
               
               
                   
                 230 
                 .00135 
                 .00135 
                 .00120 
               
               
                   
                 231 
                 .00160 
                 .00135 
                 .00130 
               
               
                   
                 232 
                 .00160 
                 .00135 
                 .00130 
               
               
                   
                 233 
                 .00140 
                 .00120 
                 .00120 
               
               
                   
                 234 
                 .00145 
                 .00135 
                 .00125 
               
               
                   
                 235 
                 .00150 
                 .00145 
                 .00120 
               
               
                   
                 236 
                 .00145 
                 .00135 
                 .00125 
               
               
                   
                   
               
             
          
         
       
     
     Examples 237-266 
     30 balloons were made according to the procedure described above for Examples 1-180. 
     The balloons were tested according to the procedure described above for Examples 1-180, except that balloons were tested at 1 atm increments from 4-16 atm and then burst. 
     Tables 29-35 below list certain parameters (PEBAX grade, dimensions, cone angle, rated burst, and hold time representing the total amount of time that the mold was held in the water). The tables also show results of the testing of the expander members. 
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 29 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .114 
                 .115 
                 .114 
                 .114 
                 .114 
               
               
                 5 
                 73.5 
                 .116 
                 .118 
                 .117 
                 .117 
                 .117 
               
               
                 6 
                 88.2 
                 .118 
                 .120 
                 .120 
                 .119 
                 .119 
               
               
                 7 
                 102.5 
                 .120 
                 .122 
                 .121 
                 .121 
                 .122 
               
               
                 8 
                 117.6 
                 .122 
                 .123 
                 .123 
                 .1230 
                 .123 
               
               
                 9 
                 132.3 
                 .123 
                 .124 
                 .124 
                 .124 
                 .125 
               
               
                 10 
                 147.0 
                 .125 
                 .126 
                 .1260 
                 .125 
                 .126 
               
               
                 11 
                 161.7 
                 .126 
                 .127 
                 .127 
                 .127 
                 .128 
               
               
                 12 
                 176.4 
                 .128 
                 .129 
                 .128 
                 .128 
                 .129 
               
               
                 13 
                 191.1 
                 .129 
                 .130 
                 .130 
                 .130 
                 .131 
               
               
                 14 
                 205.8 
                 .130 
                 .132 
                 .132 
                 .131 
                 .132 
               
               
                 15 
                 220.5 
                 .132 
                 .134 
                 .133 
                 .133 
                 .134 
               
               
                 16 
                 235.2 
                 .133 
                 .135 
                 .135 
                 Burst 
                 .135 
               
             
          
           
               
                 Burst Pressure (psi) 
                 268 
                 250 
                 250 
                 235 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 30 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .116 
                 .115 
                 .115 
                 .114 
                 .115 
               
               
                 5 
                 73.5 
                 .119 
                 .118 
                 .117 
                 .117 
                 .117 
               
               
                 6 
                 88.2 
                 .121 
                 .120 
                 .119 
                 .119 
                 .119 
               
               
                 7 
                 102.5 
                 .122 
                 .122 
                 .121 
                 .121 
                 .121 
               
               
                 8 
                 117.6 
                 .124 
                 .124 
                 .122 
                 .1220 
                 .122 
               
               
                 9 
                 132.3 
                 .125 
                 .125 
                 .124 
                 .124 
                 .123 
               
               
                 10 
                 147.0 
                 .127 
                 .126 
                 .125 
                 .125 
                 .125 
               
               
                 11 
                 161.7 
                 .128 
                 .128 
                 .126 
                 .126 
                 .126 
               
               
                 12 
                 176.4 
                 .129 
                 .129 
                 .128 
                 .127 
                 .128 
               
               
                 13 
                 191.1 
                 .131 
                 .131 
                 .129 
                 .129 
                 .129 
               
               
                 14 
                 205.8 
                 .133 
                 .132 
                 .131 
                 .131 
                 .130 
               
               
                 15 
                 220.5 
                 .135 
                 .134 
                 .132 
                 .132 
                 .132 
               
               
                 16 
                 235.2 
                 .136 
                 .135 
                 .134 
                 .134 
                 .133 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 250 
                 250 
                 250 
                 260 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 31 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .115 
                 .114 
                 .116 
                 .115 
                 .115 
               
               
                 5 
                 73.5 
                 .118 
                 .118 
                 .118 
                 .118 
                 .118 
               
               
                 6 
                 88.2 
                 .120 
                 .120 
                 .120 
                 .120 
                 .120 
               
               
                 7 
                 102.5 
                 .122 
                 .122 
                 .122 
                 .121 
                 .121 
               
               
                 8 
                 117.6 
                 .123 
                 .123 
                 .123 
                 .123 
                 .123 
               
               
                 9 
                 132.3 
                 .125 
                 .125 
                 .125 
                 .124 
                 .124 
               
               
                 10 
                 147.0 
                 .127 
                 .127 
                 .126 
                 .125 
                 .125 
               
               
                 11 
                 161.7 
                 .128 
                 .128 
                 .128 
                 .127 
                 .127 
               
               
                 12 
                 176.4 
                 .129 
                 .130 
                 .129 
                 .128 
                 .128 
               
               
                 13 
                 191.1 
                 .131 
                 .131 
                 .131 
                 .130 
                 .130 
               
               
                 14 
                 205.8 
                 .133 
                 .133 
                 .132 
                 .131 
                 .131 
               
               
                 15 
                 220.5 
                 .134 
                 .135 
                 .134 
                 .133 
                 .132 
               
               
                 16 
                 235.2 
                 .135 
                 .136 
                 .136 
                 .134 
                 .134 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 250 
                 250 
                 250 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 32 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .114 
                 .114 
                 .115 
                 .114 
                 .115 
               
               
                 5 
                 73.5 
                 .116 
                 .117 
                 .118 
                 .117 
                 .118 
               
               
                 6 
                 88.2 
                 .119 
                 .120 
                 .120 
                 .119 
                 .120 
               
               
                 7 
                 102.5 
                 .121 
                 .122 
                 .121 
                 .121 
                 .122 
               
               
                 8 
                 117.6 
                 .122 
                 .123 
                 .122 
                 .122 
                 .123 
               
               
                 9 
                 132.3 
                 .124 
                 .124 
                 .124 
                 .123 
                 .124 
               
               
                 10 
                 147.0 
                 .125 
                 .126 
                 .125 
                 .125 
                 .126 
               
               
                 11 
                 161.7 
                 .126 
                 .127 
                 .127 
                 .126 
                 .126 
               
               
                 12 
                 176.4 
                 .128 
                 .129 
                 .129 
                 .128 
                 .127 
               
               
                 13 
                 191.1 
                 .130 
                 .130 
                 .130 
                 .129 
                 .128 
               
               
                 14 
                 205.8 
                 .131 
                 .131 
                 .131 
                 .131 
                 .131 
               
               
                 15 
                 220.5 
                 .133 
                 .133 
                 .133 
                 .133 
                 .133 
               
               
                 16 
                 235.2 
                 .135 
                 .135 
                 .135 
                 .135 
                 .135 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 250 
                 250 
                 250 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 33 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .115 
                 .115 
                 .114 
                 .114 
                 .115 
               
               
                 5 
                 73.5 
                 .118 
                 .117 
                 .117 
                 .117 
                 .118 
               
               
                 6 
                 88.2 
                 .120 
                 .119 
                 .119 
                 .118 
                 .120 
               
               
                 7 
                 102.5 
                 .121 
                 .120 
                 .120 
                 .120 
                 .122 
               
               
                 8 
                 117.6 
                 .123 
                 .121 
                 .121 
                 .122 
                 .123 
               
               
                 9 
                 132.3 
                 .124 
                 .122 
                 .123 
                 .123 
                 .124 
               
               
                 10 
                 147.0 
                 .125 
                 .123 
                 .124 
                 .125 
                 .125 
               
               
                 11 
                 161.7 
                 .127 
                 .125 
                 .125 
                 .126 
                 .126 
               
               
                 12 
                 176.4 
                 .128 
                 .127 
                 .127 
                 .128 
                 .128 
               
               
                 13 
                 191.1 
                 .129 
                 .129 
                 .129 
                 .129 
                 .130 
               
               
                 14 
                 205.8 
                 .131 
                 .131 
                 .130 
                 .131 
                 .132 
               
               
                 15 
                 220.5 
                 .132 
                 .132 
                 .132 
                 .133 
                 .133 
               
               
                 16 
                 235.2 
                 .134 
                 .134 
                 .134 
                 .135 
                 .134 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 235 
                 250 
                 250 
                 260 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 34 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 6333 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .115 
                 .114 
                 .114 
                 .115 
                 .115 
               
               
                 5 
                 73.5 
                 .118 
                 .117 
                 .117 
                 .117 
                 .118 
               
               
                 6 
                 88.2 
                 .119 
                 .119 
                 .118 
                 .119 
                 .120 
               
               
                 7 
                 102.5 
                 .121 
                 .120 
                 .120 
                 .121 
                 .121 
               
               
                 8 
                 117.6 
                 .122 
                 .121 
                 .121 
                 .122 
                 .122 
               
               
                 9 
                 132.3 
                 .123 
                 .124 
                 .122 
                 .123 
                 .124 
               
               
                 10 
                 147.0 
                 .124 
                 .125 
                 .123 
                 .124 
                 .125 
               
               
                 11 
                 161.7 
                 .126 
                 .127 
                 .125 
                 .125 
                 .126 
               
               
                 12 
                 176.4 
                 .128 
                 .128 
                 .127 
                 .127 
                 .128 
               
               
                 13 
                 191.1 
                 .129 
                 .130 
                 .129 
                 .129 
                 .129 
               
               
                 14 
                 205.8 
                 .131 
                 .131 
                 .130 
                 .130 
                 .131 
               
               
                 15 
                 220.5 
                 .133 
                 .133 
                 .132 
                 .132 
                 .133 
               
               
                 16 
                 235.2 
                 .134 
                 .135 
                 .134 
                 .135 
                 .135 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 250 
                 268 
                 250 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
             
               
               
               
               
             
           
               
                 TABLE 35 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 MEASUREMENTS BEFORE TESTING 
               
               
                 Double Wall Thickness Measurements 
               
             
          
           
               
                   
                 Proximal Side-Body 
                 Center 
                 Distal Side-Body 
               
               
                   
                   
               
             
          
           
               
                 237 
                 .00155 
                 .00130 
                 .00120 
               
               
                 238 
                 .00135 
                 .00120 
                 .00120 
               
               
                 239 
                 .00125 
                 .00120 
                 .00110 
               
               
                 240 
                 .00125 
                 .00120 
                 .00120 
               
               
                 241 
                 .00130 
                 .00120 
                 .00120 
               
               
                 242 
                 .00135 
                 .00120 
                 .00110 
               
               
                 243 
                 .00130 
                 .00115 
                 .00120 
               
               
                 244 
                 .00130 
                 .00120 
                 .00110 
               
               
                 245 
                 .00135 
                 .00125 
                 .00110 
               
               
                 246 
                 .00135 
                 .00120 
                 .00120 
               
               
                 247 
                 .00135 
                 .00120 
                 .00115 
               
               
                 248 
                 .00125 
                 .00120 
                 .00115 
               
               
                 249 
                 .00120 
                 .00120 
                 .00110 
               
               
                 250 
                 .00130 
                 .00125 
                 .00110 
               
               
                 251 
                 .00130 
                 .00120 
                 .00115 
               
               
                 252 
                 .00135 
                 .00120 
                 .00105 
               
               
                 253 
                 .00130 
                 .00120 
                 .00110 
               
               
                 254 
                 .00120 
                 .00110 
                 .00110 
               
               
                 255 
                 .00120 
                 .00115 
                 .00105 
               
               
                 256 
                 .00125 
                 .00120 
                 .00110 
               
               
                 257 
                 .00125 
                 .00120 
                 .00110 
               
               
                 258 
                 .00135 
                 .00120 
                 .00110 
               
               
                 259 
                 .00135 
                 .00120 
                 .00115 
               
               
                 260 
                 .00120 
                 .00110 
                 .00110 
               
               
                 261 
                 .00130 
                 .00125 
                 .00120 
               
               
                 262 
                 .00130 
                 .00120 
                 .00110 
               
               
                 263 
                 .00125 
                 .00120 
                 .00115 
               
               
                 264 
                 .00130 
                 .00115 
                 .00115 
               
               
                 265 
                 .00135 
                 .00120 
                 .00110 
               
               
                 266 
                 .00120 
                 .00110 
                 .00105 
               
               
                   
               
             
          
         
       
     
     Examples 267-276 
     10 balloons were made according to the procedure described above for Examples 1-180, except that parisons had inside diameters of about 0.025 inches and wall thicknesses of about 0.0065 inches. 
     The balloons were tested according to the procedure described above for Examples 1-180, except that outside diameters were measured at 1 atm increments from 4-16 atms, and then the balloons were burst. 
     Tables 36-38 below list certain parameters (PEBAX grade, dimensions, cone angle, rated burst, and hold time representing the total amount of time that the mold was held in the water). The tables also show results of the testing of the expander members. 
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 36 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 7033 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .112 
                 .113 
                 .113 
                 .113 
                 .113 
               
               
                 5 
                 73.5 
                 .116 
                 .116 
                 .116 
                 .116 
                 .116 
               
               
                 6 
                 88.2 
                 .118 
                 .118 
                 .118 
                 .118 
                 .118 
               
               
                 7 
                 102.5 
                 .120 
                 .119 
                 .120 
                 .119 
                 .119 
               
               
                 8 
                 117.6 
                 .121 
                 .120 
                 .121 
                 .120 
                 .120 
               
               
                 9 
                 132.3 
                 .122 
                 .121 
                 .122 
                 .121 
                 .121 
               
               
                 10 
                 147.0 
                 .123 
                 .122 
                 .124 
                 .122 
                 .123 
               
               
                 11 
                 161.7 
                 .124 
                 .123 
                 .125 
                 .124 
                 .124 
               
               
                 12 
                 176.4 
                 .125 
                 .125 
                 .126 
                 .124 
                 .125 
               
               
                 13 
                 191.1 
                 .126 
                 .127 
                 .127 
                 .125 
                 .126 
               
               
                 14 
                 205.8 
                 .127 
                 .1275 
                 .128 
                 .127 
                 .127 
               
               
                 15 
                 220.5 
                 .128 
                 .128 
                 .129 
                 .1275 
                 .128 
               
               
                 16 
                 235.2 
                 .129 
                 .129 
                 .130 
                 .1285 
                 .129 
               
             
          
           
               
                 Burst Pressure (psi) 
                 263 
                 264 
                 250 
                 264 
                 250 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
             
               
               
               
               
               
               
             
           
               
                 TABLE 37 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 7033 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 10 degrees 
               
               
                 Rated Burst: 176 psi 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (inches) 
               
               
                 Pressure 
                 Balloon Number 
               
             
          
           
               
                 atm 
                 psi 
                 237 
                 238 
                 239 
                 240 
                 241 
               
               
                   
               
               
                 4 
                 58.8 
                 .112 
                 .114 
                 .114 
                 .114 
                 .113 
               
               
                 5 
                 73.5 
                 .115 
                 .117 
                 .116 
                 .117 
                 .116 
               
               
                 6 
                 88.2 
                 .117 
                 .118 
                 .117 
                 .118 
                 .118 
               
               
                 7 
                 102.5 
                 .1185 
                 .120 
                 .119 
                 .120 
                 .120 
               
               
                 8 
                 117.6 
                 .121 
                 .121 
                 .120 
                 .121 
                 .122 
               
               
                 9 
                 132.3 
                 .122 
                 .122 
                 .121 
                 .122 
                 .122 
               
               
                 10 
                 147.0 
                 .123 
                 .123 
                 .123 
                 .123 
                 .123 
               
               
                 11 
                 161.7 
                 .124 
                 .124 
                 .124 
                 .124 
                 .124 
               
               
                 12 
                 176.4 
                 .126 
                 .126 
                 .125 
                 .125 
                 .125 
               
               
                 13 
                 191.1 
                 .128 
                 .1265 
                 .127 
                 .126 
                 .126 
               
               
                 14 
                 205.8 
                 .128 
                 .1280 
                 .128 
                 .127 
                 .127 
               
               
                 15 
                 220.5 
                 .129 
                 .129 
                 .1295 
                 .128 
                 .128 
               
               
                 16 
                 235.2 
                 .130 
                 .130 
                 .131 
                 .129 
                 .129 
               
             
          
           
               
                 Burst Pressure (psi) 
                 250 
                 264 
                 264 
                 250 
                 264 
               
               
                 Direction of Burst 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
                 Axial 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
             
               
               
               
               
             
           
               
                 TABLE 38 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 MEASUREMENTS BEFORE TESTING 
               
               
                 Double Wall Thickness Measurements 
               
             
          
           
               
                   
                 Proximal Side-Body 
                 Center 
                 Distal Side-Body 
               
               
                   
                   
               
             
          
           
               
                 267 
                 .00110 
                 .00110 
                 .00105 
               
               
                 268 
                 .00105 
                 .00105 
                 .00105 
               
               
                 269 
                 .00105 
                 .00100 
                 .00100 
               
               
                 270 
                 .00110 
                 .00110 
                 .00110 
               
               
                 271 
                 .00115 
                 .00110 
                 .00100 
               
               
                 272 
                 .00115 
                 .00100 
                 .00100 
               
               
                 273 
                 .00115 
                 .00110 
                 .00100 
               
               
                 274 
                 .00115 
                 .00100 
                 .00105 
               
               
                 275 
                 .00110 
                 .00110 
                 .00100 
               
               
                 276 
                 .00110 
                 .00100 
                 .00100 
               
               
                   
               
             
          
         
       
     
     Examples 277-306 
     30 balloons were made according to the procedure described above for Examples 1-180, except that cone angles were 26° and the parison inside diameter was 0.025 inches with a wall thickness of 0.0065, 
     The balloons were tested according to the procedure described above for Examples 1-180, except that outside diameters were measured at 1 atm increments from 4-16 atms, and then the balloons were burst. 
     Tables 39-41 below list certain parameters (PEBAX grade, dimensions, cone angle, rated burst, and hold time representing the total amount of time that the mold was held in the water). The tables also show results of the testing of the expander members. 
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 39 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 7033 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 26° 
               
               
                 Rated Burst: 176 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (cm) 
               
               
                 Pressure 
                 Balloon Numbers 
               
             
          
           
               
                 atm 
                 277 
                 278 
                 279 
                 280 
                 281 
                 282 
                 283 
                 284 
                 285 
                 286 
               
               
                   
               
               
                 4 
                 2.9972 
                 3.0226 
                 2.9718 
                 2.9210 
                 2.9210 
                 2.9210 
                 2.8448 
                 2.8194 
                 2.8956 
                 2.9210 
               
               
                 5 
                 3.0988 
                 3.1242 
                 3.0988 
                 3.0226 
                 2.9972 
                 2.9972 
                 2.9972 
                 2.99.72. 
                 3.0226 
                 3.0480 
               
               
                 6 
                 3.1496 
                 3.1750 
                 3.1496 
                 3.1242 
                 30.7340 
                 3.1496 
                 30.9880 
                 3.0988 
                 3.1750 
                 3.1496 
               
               
                 7 
                 3.2004 
                 3.2258 
                 3.2004 
                 3.1750 
                 3.1750 
                 3.2258 
                 3.2004 
                 3.2004 
                 3.2258 
                 3.2004 
               
               
                 8 
                 3.2766 
                 3.2512 
                 3.2258 
                 3.2258 
                 3.2258 
                 3.2766 
                 3.2512 
                 3.2512 
                 3.2766 
                 3.3020 
               
               
                 9 
                 3.3020 
                 3.3020 
                 3.2766 
                 3.2766 
                 3.2766 
                 3.3528 
                 3.3020 
                 3.3020 
                 3.3274 
                 3:3528 
               
               
                 10 
                 3.3528 
                 3.3528 
                 3.3274 
                 3.3030 
                 3.3274 
                 3.4036 
                 3.3528 
                 3.3528 
                 3.4036 
                 3.4036 
               
               
                 11 
                 3.3782 
                 3.4036 
                 3.3782 
                 3.3528 
                 3.3782 
                 3.4544 
                 3.4036 
                 3.4036 
                 3.4544 
                 3.4544 
               
               
                 12 
                 3.4544 
                 3.4544 
                 3.4290 
                 3.4036 
                 3.4036 
                 3.5052 
                 3.4544 
                 3.4544 
                 3.5306 
                 3.5306 
               
               
                 13 
                 3.5052 
                 3.4798 
                 3.5052 
                 3.4290 
                 3.4544 
                 3.5814 
                 3.5052 
                 3.5052 
                 3.5814 
                 3.6068 
               
               
                 14 
                 3.5560 
                 3.5560 
                 3.5814 
                 3.5052 
                 3.5052 
                 3.6576 
                 3.5560 
                 3.5560 
                 3.6576 
                 3.6576 
               
               
                 15 
                 3.5814 
                 3.6068 
                 3.6068 
                 3.5306 
                 3.5306 
                 3.7338 
                 3.6068 
                 3.6322 
                 3.8100 
                 3.7592 
               
               
                 16 
                 3.6576 
                 3.6830 
                 3.6322 
                 3.6068 
                 3.6068 
                 3.8608 
                 3.6576 
                 3.6576 
                 3.8100 
                 3.8100 
               
               
                 Burst 
                 290 
                 265 
                 265 
                 295 
                 260 
                 265 
                 265 
                 260 
                 250 
                 265 
               
               
                 psi 
               
               
                 atm 
                 19.70 
                 18.02 
                 18.02 
                 20.06 
                 17.68 
                 18.02 
                 18.02 
                 17.68 
                 17.00 
                 18.02 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 40 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 7033 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 26° 
               
               
                 Rated Burst: 176 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (cm) 
               
               
                 Pressure 
                 Balloon Numbers 
               
             
          
           
               
                 atm 
                 287 
                 288 
                 289 
                 290 
                 291 
                 292 
                 293 
                 294 
                 295 
                 296 
               
               
                   
               
               
                 4 
                 2.8956 
                 2.8956 
                 2.9210 
                 2.8702 
                 2.8956 
                 2.9718 
                 2.8956 
                 2.9464 
                 2.9210 
                 2.8702 
               
               
                 5 
                 2.9972 
                 2.9972 
                 3.0480 
                 2.9972 
                 3.0226 
                 3.0988 
                 3.0226 
                 3.0734 
                 3.0480 
                 2.9718 
               
               
                 6 
                 3.1242 
                 3.0988 
                 3.1496 
                 3.0988 
                 3.1242 
                 3.1750 
                 3.1242 
                 3.1750 
                 3.1242 
                 3.0734 
               
               
                 7 
                 3.2004 
                 3.2004 
                 3.2258 
                 3.1496 
                 3.1750 
                 3.2512 
                 3.1750 
                 3.2258 
                 3.2004 
                 3.1750 
               
               
                 8 
                 3.2512 
                 3.2258 
                 3.3020 
                 3.2258 
                 3.2512 
                 3.3020 
                 3.2258 
                 3.2766 
                 3.2512 
                 3.2258 
               
               
                 9 
                 3.3274 
                 3.3020 
                 3.3528 
                 3.2766 
                 3.3020 
                 3.3528 
                 3.2766 
                 3.3274 
                 3.3274 
                 3.2766 
               
               
                 10 
                 3.3782 
                 3.3528 
                 3.4036 
                 3.3274 
                 3.3528 
                 3.4036 
                 3.3274 
                 3.3782 
                 3.3782 
                 3.3274 
               
               
                 11 
                 3.4290 
                 3.4036 
                 3.4798 
                 3.3782 
                 3.4036 
                 3.4544 
                 3.3782 
                 3.4290 
                 3.4290 
                 3.3782 
               
               
                 12 
                 3.4798 
                 3.4544 
                 3.5560 
                 3.4290 
                 3.4544 
                 3.5052 
                 3.4290 
                 3.5052 
                 3.4798 
                 3.4290 
               
               
                 13 
                 3.5560 
                 3.5306 
                 3.6068 
                 3.4798 
                 3.5052 
                 3.5306 
                 3.4544 
                 3.5560 
                 3.5560 
                 3.4798 
               
               
                 14 
                 3.6068 
                 3.5560 
                 3.6576 
                 3.5306 
                 3.5560 
                 3.5306 
                 3.5052 
                 3.6068 
                 3.6068 
                 3.5052 
               
               
                 15 
                 3.6576 
                 36068 
                 3.7338 
                 3.5814 
                 3.6322 
                 3.5306 
                 3.5306 
                 3.6830 
                 3.6830 
                 3.5814 
               
               
                 16 
                 3.7592 
                 3.6576 
                 3.8354 
                 3.6576 
                 3.7084 
                 3.5560 
                 3.5560 
                 3.7592 
                 3.6830 
                 3.6322 
               
               
                 Burst 
                 265 
                 265 
                 265 
                 265 
                 265 
                 265 
                 265 
                 260 
                 250 
                 265 
               
               
                 psi 
               
               
                 atm 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 17.68 
                 17.00 
                 18.02 
               
               
                   
               
             
          
         
       
     
     
       
         
               
             
               
               
             
               
               
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 41 
               
             
             
               
                   
               
               
                 BALLOON COMPLIANCE 
               
               
                 PEBAX Grade: 7033 
               
               
                 Dimensions (dia. × lgt.): 3.0 × 20 mm 
               
               
                 Cone Angle: 26° 
               
               
                 Rated Burst: 176 
               
               
                 Hold (Secs.) 15 
               
             
          
           
               
                   
                 DIAMETER (cm) 
               
               
                 Pressure 
                 Balloon Numbers 
               
             
          
           
               
                 atm 
                 297 
                 298 
                 299 
                 300 
                 301 
                 302 
                 303 
                 304 
                 305 
                 306 
               
               
                   
               
               
                 4 
                 2.8702 
                 2.8956 
                 2.8194 
                 2.8194 
                 2.8702 
                 2.7940 
                 2.8448 
                 2.8702 
                 2.8956 
                 2.8448 
               
               
                 5 
                 2.9972 
                 2.9972 
                 2.9972 
                 2.9210 
                 2.9972 
                 2.9972 
                 2.9972 
                 2.9718 
                 2.9972 
                 2.9972 
               
               
                 6 
                 3.1242 
                 3.1242 
                 3.0988 
                 3.0480 
                 3.0988 
                 3.1242 
                 3.0988 
                 3.0734 
                 3.0988 
                 3.0988 
               
               
                 7 
                 3.1750 
                 3.1750 
                 3.2004 
                 3.1496 
                 3.1750 
                 3.2004 
                 3.1750 
                 3.1496 
                 3.1750 
                 3.2004 
               
               
                 8 
                 3.2512 
                 3.2512 
                 3.2512 
                 3.2004 
                 3.2258 
                 3.2512 
                 3.2512 
                 3.2004 
                 3.2258 
                 3.2766 
               
               
                 9 
                 3.3274 
                 3.3020 
                 3.2766 
                 3.2512 
                 3.3020 
                 3.3274 
                 3.3020 
                 3.2512 
                 3.2766 
                 3.3274 
               
               
                 10 
                 3.3782 
                 3.3528 
                 3.3274 
                 3.3274 
                 3.3528 
                 3.4036 
                 3.3274 
                 3.3020 
                 3.3274 
                 3.4036 
               
               
                 11 
                 3.4544 
                 3.4036 
                 3.3782 
                 3.3782 
                 3.4036 
                 3.4544 
                 3.3782 
                 3.3782 
                 3.3782 
                 3.4544 
               
               
                 12 
                 3.5052 
                 3.4798 
                 3.4555 
                 3.4036 
                 3.4544 
                 3.5052 
                 3.4544 
                 3.4290 
                 3.4290 
                 3.5052 
               
               
                 13 
                 3.5560 
                 3.5052 
                 3.5306 
                 3.4544 
                 3.5052 
                 3.6068 
                 3.5052 
                 3.4544 
                 3.4798 
                 3.5814 
               
               
                 14 
                 3.6322 
                 3.5306 
                 3.5814 
                 3.5052 
                 3.5560 
                 3.6576 
                 3.5560 
                 3.5052 
                 3.5306 
                 3.6322 
               
               
                 15 
                 3.6830 
                 3.5814 
                 3.6322 
                 3.5560 
                 3.6322 
                 3.7592 
                 3.6068 
                 3.5560 
                 3.5814 
                 3.7084 
               
               
                 16 
                 3.7846 
                 3.6322 
                 3.7084 
                 3.6322 
                 3.6830 
                 3.8100 
                 3.6830 
                 3.6322 
                 3.6322 
                 3.7846 
               
               
                 Burst 
                 265 
                 260 
                 265 
                 265 
                 265 
                 265 
                 265 
                 265 
                 265 
                 265 
               
               
                 psi 
               
               
                 atm 
                 18.02 
                 17.68 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
                 18.02 
               
               
                   
               
             
          
         
       
     
     Examples 307-366 
     60 balloons were made according to the following procedure: Tubing was placed into a mold and preheated for 15-30 seconds to a preselected balloon blowing temperature. The tubing was stretched and inflated to make a balloon. The balloon was allowed to remain at the balloon blowing temperature for 15-30 seconds, and then elevated to at least the crystallization temperature for 10-20 seconds. The balloon was then cooled to room temperature and removed from the mold. 
     The balloons were tested according to the procedure described above for Examples 1-180. 
     Tables 42-47 below list certain parameters (PEBAX grade, dimensions, crystallization temperature, mold temperature, left and right stretch dimensions, nitrogen pressure, and air flow). The tables also show results of the testing of the expander members. 
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 42 
               
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 200° F. 
                 MOLD: 
                 190° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2.60 INCHES 
                 RIGHT: 
                 2.60 INCHES 
               
               
                 PSI: 
                 350 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 307 
                 0.00120 
                 0.00120 
                 0.00130 
                 .020 × .035 
                 0.119 
                 0.128 
                 0.135 
                 238 
               
               
                 308 
                 0.00120 
                 0.00130 
                 0.00120 
                 .020 × .035 
                 0.118 
                 0.127 
                 0.137 
                 241 
               
               
                 309 
                 0.00135 
                 0.00135 
                 0.00145 
                 .020 × .035 
                 0.118 
                 0.128 
                 0.136 
                 245 
               
               
                 310 
                 0.00130 
                 0.00140 
                 0.00120 
                 .020 × .035 
                 0.117 
                 0.127 
                 0.137 
                 238 
               
               
                 311 
                 0.00125 
                 0.00135 
                 0.00145 
                 .020 × .035 
                 0.117 
                 0.127 
                 0.134 
                 240 
               
               
                 312 
                 0.00135 
                 0.00125 
                 0.00125 
                 .020 × .035 
                   
                   
                   
                 249 
               
               
                 313 
                 0.00125 
                 0.00125 
                 0.00125 
                 .020 × .035 
                   
                   
                   
                 239 
               
               
                 314 
                 0.00135 
                 0.00130 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 230 
               
               
                 315 
                 0.00130 
                 0.00130 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 316 
                 0.00130 
                 0.00130 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 Average 
                 0.001285 
                 0.0013 
                 0.001305 
                 .020 × .035 
                 0.1178 
                 0.1274 
                 0.1358 
                 240 
               
               
                 Standard 
                 5.79751E − 05 
                 5.7735E − 05 
                 8.95979E − 05 
                   
                 0.000837 
                 0.000548 
                 0.001304 
                 4.898979 
               
               
                   
               
               
                 Calculated k-stat (psi): 214.5106  
               
               
                 Calculated Hoop Stress (psi): 23794.55  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 43 
               
               
                   
               
               
                 PEBAX GRADE: 6333 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 200° F. 
                 MOLD: 
                 190° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2.75 INCHES 
                 RIGHT: 
                 2.75 INCHES 
               
               
                 PSI: 
                 350 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 317 
                 0.00130 
                 0.00135 
                 0.00130 
                 .020 × .035 
                 0.116 
                 0.127 
                 0.135 
                 240 
               
               
                 318 
                 0.00135 
                 0.00140 
                 0.00140 
                 .020 × .035 
                 0.114 
                 0.127 
                 0.135 
                 248 
               
               
                 319 
                 0.00135 
                 0.00145 
                 0.00135 
                 .020 × .035 
                 0.116 
                 0.127 
                 0.134 
                 240 
               
               
                 320 
                 0.00135 
                 0.00135 
                 0.00145 
                 .020 × .035 
                 0.115 
                 0.127 
                 0.134 
                 251 
               
               
                 321 
                 0.00130 
                 0.00145 
                 0.00130 
                 .020 × .035 
                 0.115 
                 0.127 
                 0.135 
                 240 
               
               
                 322 
                 0.00145 
                 0.00135 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 323 
                 0.00140 
                 0.00140 
                 0.06140 
                 .020 × .035 
                   
                   
                   
                 248 
               
               
                 324 
                 0.00135 
                 0.00135 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 325 
                 0.00135 
                 0.00135 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 326 
                 0.00135 
                 0.00135 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 Average 
                 0.001355 
                 0.00138 
                 0.00137 
                 .020 × .035 
                 0.1152 
                 0.127 
                 0.1346 
                 242.7 
               
               
                 Standard 
                 4.38E − 05 
                 4.216E − 05 
                 4.74342E − 05 
                   
                 0.000837 
                 1.86E − 
                 0.000548 
                 4.423423 
               
               
                   
                   
                   
                   
                   
                   
                 09 
               
               
                   
               
               
                 Calculated K-stat (psi): 219.6549  
               
               
                 Calculated Hoop Stress (psi): 22747.53  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 44 
               
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 30 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 200° F. 
                 MOLD: 
                 190° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2.75 INCHES 
                 RIGHT: 
                 2.75 INCHES 
               
               
                 PSI: 
                 380 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 327 
                 0.00130 
                 0.001350 
                 0.00130 
                 .020 × .035 
                 0.115 
                 0.125 
                 0.129 
                 270 
               
               
                 328 
                 0.00125 
                 0.001300 
                 0.00130 
                 .020 × .035 
                 0.116 
                 0.125 
                 0.129 
                 270 
               
               
                 329 
                 0.00130 
                 0.001350 
                 0.00130 
                 .020 × .035 
                 0.116 
                 0.125 
                 0.132 
                 270 
               
               
                 330 
                 0.00130 
                 0.001300 
                 0.00125 
                 .020 × .035 
                 0.115 
                 0.127 
                 0.132 
                 263 
               
               
                 331 
                 0.00125 
                 0.001300 
                 0.00130 
                 .020 × .035 
                 0.116 
                 0.126 
                 0.132 
                 270 
               
               
                 332 
                 0.00135 
                 0.001350 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 280 
               
               
                 333 
                 0.00135 
                 0.001300 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 280 
               
               
                 334 
                 0.00130 
                 0.001300 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 270 
               
               
                 335 
                 0.00125 
                 0.001250 
                 0.00120 
                 .020 × .035 
                   
                   
                   
                 283 
               
               
                 336 
                 0.00130 
                 0.001200 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 240 
               
               
                 Average 
                 0.001295 
                 0.0013 
                 1.285E − 03 
                 .020 × .035 
                 0.1156 
                 0.1256 
                 0.1308 
                 269.6 
               
               
                 Standard 
                 3.69E − 05 
                 4.714E − 05 
                 3.37474E − 05 
                   
                 0.000548 
                 0.000894 
                 0.001643 
                 12.09408 
               
               
                   
               
               
                 Calculated K-stat (psi): 206.6745  
               
               
                 Calculated Hoop Stress (psi): 26148.08  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 45 
               
               
                   
               
               
                 PEBAX GRADE: 7033 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 30 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 260° F. 
                 MOLD: 
                 210° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2.25 INCHES 
                 RIGHT: 
                 2.25 INCHES 
               
               
                 PSI: 
                 320 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 337 
                 0.00100 
                 0.00100 
                 0.00100 
                 .020 × .035 
                 0.121 
                 0.13 
                 0.138 
                 238 
               
               
                 338 
                 0.00115 
                 0.00120 
                 0.00100 
                 .020 × .035 
                 0.121 
                 0.129 
                 0.136 
                 230 
               
               
                 339 
                 0.00100 
                 0.00105 
                 0.00115 
                 .020 × .035 
                 0.121 
                 0.13 
                 0.138 
                 220 
               
               
                 340 
                 0.00110 
                 0.00115 
                 0.00100 
                 .020 × .035 
                 0.121 
                 0.129 
                 0.136 
                 219 
               
               
                 341 
                 0.00105 
                 0.00110 
                 0.00100 
                 .020 × .035 
                 0.121 
                 0.129 
                 0.137 
                 238 
               
               
                 342 
                 0.00105 
                 0.00100 
                 0.00100 
                 .020 × .035 
                   
                   
                   
                 239 
               
               
                 343 
                 0.00120 
                 0.00120 
                 0.00105 
                 .020 × .035 
                   
                   
                   
                 238 
               
               
                 344 
                 0.00100 
                 0.00110 
                 0.00105 
                 .020 × .035 
                   
                   
                   
                 238 
               
               
                 345 
                 0.00100 
                 0.00105 
                 0.00105 
                 .020 × .035 
                   
                   
                   
                 220 
               
               
                 346 
                 0.00105 
                 0.00110 
                 0.00100 
                 .020 × .035 
                   
                   
                   
                 239 
               
               
                 Average 
                 0.00106 
                 0.001095 
                 0.00103 
                 .020 × .035 
                 0.121 
                 0.1294 
                 0.137 
                 231.9 
               
               
                 Standard 
                 6.99E − 05 
                 7.245E − 05 
                 4.83046E − 05 
                   
                 0 
                 0.000548 
                 0.001 
                 8.83742 
               
               
                   
               
               
                 Calculated k-stat (psi): 185.9189  
               
               
                 Calculated Hoop Stress (psi): 28309.3  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 46 
               
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 400° F. 
                 MOLD: 
                 190° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2 INCHES 
                 RIGHT: 
                 2 INCHES 
               
               
                 PSI: 
                 400 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 347 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                 0.113 
                 0.119 
                 0.124 
                 305 
               
               
                 348 
                 0.00145 
                 0.00150 
                 0.00145 
                 .020 × .035 
                 0.111 
                 0.119 
                 0.124 
                 330 
               
               
                 349 
                 0.00145 
                 0.00150 
                 0.00150 
                 .020 × .035 
                 0.113 
                 0.122 
                 0.124 
                 315 
               
               
                 350 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                 0.115 
                 0.122 
                 0.125 
                 313 
               
               
                 351 
                 0.00150 
                 0.00145 
                 0.00140 
                 .020 × .035 
                 0.113 
                 0.120 
                 0.124 
                 343 
               
               
                 352 
                 0.00145 
                 0.00145 
                 0.00135 
                 .020 × .035 
                   
                   
                   
                 343 
               
               
                 353 
                 0.00150 
                 0.00150 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 329 
               
               
                 354 
                 0.00140 
                 0.00150 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 303 
               
               
                 355 
                 0.00140 
                 0.00140 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 313 
               
               
                 356 
                 0.00140 
                 0.00150 
                 0.00140 
                 .020 × .035 
                   
                   
                   
                 330 
               
               
                 Average 
                 0.001433 
                 0.00146 
                 0.00141 
                 .020 × .035 
                 0.113 
                 0.1204 
                 0.1242 
                 322.4 
               
               
                 Standard 
                 4.33E − 05 
                 4.595E − 05 
                 3.94405E − 05 
                   
                 0.001414 
                 0.001517 
                 0.000447 
                 14.59985 
               
               
                   
               
               
                 Calculated K-stat (psi): 246.437  
               
               
                 Calculated Hoop Stress (psi): 27081.6  
               
             
          
         
       
     
     
       
         
               
             
               
               
               
               
               
             
               
               
               
               
               
               
               
               
               
             
           
               
                 TABLE 47 
               
               
                   
               
               
                 PEBAX GRADE: 7233 
               
               
                 BALLOON DIMENSIONS (diameter × length): 3 × 20 mm 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 PARAMETERS: 
                   
                   
                   
                   
               
               
                 TEMP: 
                 CRYSTALIZATION: 
                 260° F. 
                 MOLD: 
                 210° F. 
               
               
                 STRETCH: 
                 LEFT: 
                 2.25 INCHES 
                 RIGHT: 
                 2.25 INCHES 
               
               
                 PSI: 
                 330 
               
               
                 AIRFLOW: 
                 200 
               
               
                   
               
             
          
           
               
                   
                   
                 Double 
                 Double 
                   
                   
                   
                   
                   
               
               
                   
                 Double 
                 Proximal 
                 Distal 
               
               
                   
                 Centerwall 
                 Wall 
                 Wall 
                 Measured 
                 Diameter 
                 Diameter 
                 Diameter 
                 Burst 
               
               
                 Balloon 
                 Thickness 
                 Thickness 
                 Thickness 
                 ID/OD 
                 50 psi 
                 100 psi 
                 150 psi 
                 Pressure 
               
               
                 No. 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (inches) 
                 (psi) 
               
               
                   
               
               
                 357 
                 0.00110 
                 0.00100 
                 0.00125 
                 .020 × .035 
                 0.118 
                 0.125 
                 0.128 
                 240 
               
               
                 358 
                 0.00100 
                 0.00105 
                 0.00115 
                 .020 × .035 
                 0.119 
                 0.125 
                 0.13 
                 260 
               
               
                 359 
                 0.00100 
                 0.00105 
                 0.00120 
                 .020 × .035 
                 0.118 
                 0.123 
                 0.128 
                 242 
               
               
                 360 
                 0.00110 
                 0.00120 
                 0.00100 
                 .020 × .035 
                 0.119 
                 0.126 
                 0.131 
                 245 
               
               
                 361 
                 0.00110 
                 0.00120 
                 0.00120 
                 .020 × .035 
                 0.119 
                 0.125 
                 0.13 
                 260 
               
               
                 362 
                 0.00100 
                 0.00100 
                 0.00120 
                 .020 × .035 
                   
                   
                   
                 260 
               
               
                 363 
                 0.00120 
                 0.00120 
                 0.00130 
                 .020 × .035 
                   
                   
                   
                 242 
               
               
                 364 
                 0.00115 
                 0.00105 
                 0.00120 
                 .020 × .035 
                   
                   
                   
                 262 
               
               
                 365 
                 0.00100 
                 0.00105 
                 0.00120 
                 .020 × .035 
                   
                   
                   
                 260 
               
               
                 366 
                 0.00110 
                 0.00100 
                 0.00115 
                 .020 × .035 
                   
                   
                   
                 231 
               
               
                 Average 
                 0.001075 
                 0.00108 
                 0.001185 
                 .020 × .035 
                 0.1156 
                 0.1248 
                 0.1294 
                 250.2 
               
               
                 Standard 
                 7.17E − 05 
                 8.5635E − 05 
                 7.83511E − 05 
                   
                 0.000548 
                 0.001095 
                 0.001342 
                 11.34117 
               
               
                   
               
               
                 Calculated K-stat (psi): 191.192  
               
               
                 Calculated Hoop Stress (psi): 29046.47  
               
             
          
         
       
     
     FIGS. 4-15 were prepared by collecting data according to material type, and reducing the data to a series of quadratic equations that include stretch, crystallization temperature, and balloon blowing temperature as dependant variables. The equations were then plotted using a statistical design of experiments program called ECHIP®. Response variables of interest were then plotted. 
     With regard to FIGS. 4-15, the balloons were expanded to two times their original length in the axial direction. 
     The foregoing specification and figures are presented for the purpose of illustrating, and not limiting, the present invention.