Patent Publication Number: US-2021162113-A1

Title: Disposable irrigation basin for extremity procedures

Description:
REFERENCE TO RELATED APPLICATIONS 
     This application claims priority to, and the benefit of, U.S. Provisional Patent Application Ser. No. 62/818,436, filed Mar. 14, 2019, the entire content of which is incorporated herein by reference. 
    
    
     FIELD OF THE INVENTION 
     This invention relates generally to wound cleaning and, in particular, to a disposable irrigation basin for extremity procedures. 
     BACKGROUND OF THE INVENTION 
     Irrigation of extremities utilizes large amounts of sterile saline, water, and cleansing agents. Once in contact with infected and/or bloody extremities, unstable basins can splash or “slosh” contaminated fluid onto and under the sterile field, patient, clinicians, and floors and other surfaces of the treatment venue. 
     Current extremity irrigation trays are unstable and often times require modification, resulting in poor containment of fluid, contamination, and exposure of blood-borne pathogens. Unstable basins can cost time and money by increasing: (1) cleanup costs (cleaning solutions); (2) time management (room turnover); (3) manpower (housekeeping or EMS); and (4) expensive resources (towels, chucks, absorbents, etc.) necessary to contain spillage and decontaminate the patient, clinician and treatment area. 
     SUMMARY OF THE INVENTION 
     This invention provides an improved irrigation basin that allows the extremity to comfortably rest in a stabilized position, restricts fluid within, and allows contaminated fluid to safely and efficiently drain into an integrated suction portal. This results in decrease exposure to pathogens and cleanup costs, safe execution, and quick and thorough disposal. 
     The disposable irrigation basin disclosed herein allows the extremity to rest securely inside the basin and accommodates a tourniquet. An internal extremity resting slope accommodates up to the distal one third of a lower extremity, depending on what level the physician desires. The basin has a built-in step-off groove (underneath) which anchors to the edge of an OR table, exam chair, exam table, and or any edged examination platform. Once engaged, the distal portion of the basin declines (by design) and is held in place by the body weight of the extremity. As a result, fluids drain into the basin in a “downhill” manner, collect into a series of troughs, and vacate via an integrated suction portal. The contaminated fluid may then travel via suction into FDA approved suction canister(s), thus decreasing contamination. The basin can also be used on any flat surface, does not require suction, and can collect up to 1 liter of irrigation/fluid without spillage. 
     The inventive wound basin may be used before, during, or following any type of extremity intervention, and in any venue. It may be used when the extremity is prepped prior to debridement or intervention, during the procedure to help collect debris, fluid, contamination, or after for irrigation, lavage or rinsing. The extremity is placed gently into the basin with distal part of the extremity lying on the extremity resting surface or slope, with the weight of the extremity keeping the basin in place. As the procedure begins, debris, contaminants, fluids (blood, purulence, drainage) are irrigated away with normal or mechanical irrigation or lavage. If no suction is used, the extremity is still protected from the fluid within the basin since it is elevated above on the resting slope. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is a perspective view of a preferred embodiment of the invention; 
         FIG. 2  is a top view of the embodiment of  FIG. 1 ; and 
         FIG. 3  is a bottom view of the preferred embodiment; 
         FIG. 4  is a first side view of the invention; 
         FIG. 5  is a second side view of the invention; 
         FIG. 6  is a front view; and 
         FIG. 7  is a rear view. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Now making reference to the accompanying drawing,  FIG. 1  is a perspective view of a preferred embodiment of the invention, shown generally at  100 . The basin is preferably constructed as a unitary, molded, single plastic article using a material such as polypropylene. Wall thickness may be generally uniform, with a thickness on the order of ⅛″ to ¼″ to address desired tradeoffs regarding sturdiness, rigidity, weight and cost. 
     The article is preferably injection molded or thermoformed. It is important to note that while certain dimensions are presented, these are exemplary only, and may be varied or adjusted in accordance with a desired application. Indeed, the inventive basis may be provided in different sizes (i.e., adult and child), and mechanisms other than those shown may be used to attach basin to appropriate hospital or treatment room furniture. Materials other than polypropylene may likewise be used. 
     The basin  100  is generally rectangular in shape, with four sidewalls  102 ,  104 ,  106 ,  108  extending upwardly from a closed bottom to an open top. The sidewalls transition to one another through curved corner sections  112 ,  114 ,  116 ,  118 . The front of the basin includes an extremity opening or entry channel  110 , with the lower edge  120  of the channel  110  preferably smoothly transitioning to a generally downward sloping extremity resting surface  122 . The preferred embodiment further includes an integrated suction port  124  in fluid communication with the lowest surface internal to the basin, namely, ring-shaped surface  126 . Fluid communication is facilitated by way of a small passageway from the suction port  124  to the lower surface  126 . 
     The basin may include additional internal platforms and sloping surfaces forming a series of troughs at different levels. For example, the forward portion of extremity resting surface  122  transitions to platforms  130 ,  132  through sloping surfaces  129 ,  131 . Platforms  130 ,  132  may, in turn, transition to an annular intermediate platform  134  though sloping side surfaces  138 ,  140 . Annular intermediate trough  134  further transitions to bottom ring-shaped trough  126  though sloping surface  144 . The lower portion of extremity resting surface  122  transitions to trough  134  through sloping surfaces  123 ,  125 . 
     The purpose of the various internal platforms, sloping surfaces and troughs is two-fold. First, such structures add to overall rigidity. But secondly, and more importantly, the various levels act to keep the work are as clean as possible during procedures. The upper portion of extremity resting surface  122  smoothly transitions to platforms  130 ,  132 . The lower edge  146  of extremity resting surface  122  smoothly transitions to intermediate trough  134 , such that the entire lower portion of extremity resting surface  122  transitions to trough  134 . With such a construction, fluids and materials readily flow off extremity resting surface  122  to the various levels, ultimately to trough  126  and suction port  124 , keeping each level relatively free of liquids and debris. 
     The right and left halves of the basin are generally symmetrical on either side of a central dividing line running from front to back, but for the inclusion of the suction port  124 , which is preferably disposed outside the basin proper, surrounded by a semi-circular upwardly extending sidewall  148 .  FIG. 2  is a top view of the preferred embodiment, perhaps better illustrating all of the various platform levels and sloping surfaces. This figure also better shows passageway  128  from lowest annular surface  126  to suction port  124 . Note that the sloping extremity resting surface  122  preferably widens from edge  120  to edge  146  where the bottom portion of surface  122  transitions to intermediate trough  134 . 
       FIG. 3  is a bottom view of the basin showing how particular bottom surfaces preferably include textured surfaces. For example, the bottom outer surfaces  330 ,  332  associated with side platforms  130 ,  132  are preferably textured, as is the outer surface  326  associated with the underside of trough  126 . These areas include this texturing to assist in maintaining the basin in position when placed onto a bed or other surface, as discussed with reference to  FIGS. 4, 5 . 
       FIG. 4  is a first side view of the invention, and  FIG. 5  is a view of the opposing side. In terms of dimensions, the depth of the top edge, DT, is preferably in the range of 11 to 15 inches, more preferably in the range of 12 to 14 inches, and most preferably about 13 inches. The depth of the bottom edge, DB, may be in the range of 10 to 14 inches, more preferably in the range of 11 to 13 inches, and most preferably about 12 inches. Note that overall periphery of the bottom is preferably smaller that the overall periphery of the top edge E to ensure that all of the sidewalls slope downwardly and inwardly toward the bottom. 
     Continuing the reference to  FIGS. 4, 5 , the height of the rear wall, HR, may be in the range of 2 to 6 inches, more preferably in the range of 3 to 5 inches, and most preferably about 4 inches. The height of the front wall, HF, may be in the range of 3 to 7 inches, more preferably in the range of 4 to 6 inches, and most preferably about 4 inches. It has been discovered through experimentation, that these numbers and ranges most adequately address adult and child extremities while providing for the most efficient irrigation and cleansing procedures. As mentioned, any or all of these dimensions may be varied depending upon the procedure; for example, DT may be made shorter for foot procedures or longer for arm-related operations. 
     The preferred embodiments further include a step-off groove G that cuts widthwise into the bottom of the basin as shown in  FIGS. 4, 5 . As shown in  FIG. 5 , this cut-out anchors the basin to the edge of an OR table, exam chair, exam table, and or any edged examination platform  500 . Cross-hatched bottom surfaces  330 ,  332 ,  326  enhance stability and grip. Once engaged, the distal portion of the basin declines (by design) and is held in place by the body weight of the extremity  501 . As a result, fluids drain into the basin in a “downhill” manner, collect into the series of troughs, to be vacated via integrated suction portal  124 . The contaminated fluid then travels via suction through hose  510  into an FDA approved suction canister(s) (not shown), further decreasing contamination. The basin can also be used on any flat surface, does not require suction, and can collect up to 1 liter of irrigation/fluid without spillage. 
     Prior to this invention, the extremity rests awkwardly on edge or within a simple tray, often causing the distal end of the tray to tip upwards, allowing contaminated fluid to escape. This invention allows the extremity to rest comfortably “inside” the basin on surface  122 , within the basin and with a stabile weight distribution and direct orientation via an entry channel that is elevated, thereby decreases the chances of splash or “sloshing” of contaminated fluids on the patient, clinician or treatment area. 
       FIG. 6  is a front view of a preferred basin, and  FIG. 7  is a rear view. The width W of the lower portion of the basin may be in the range 8 to 12 inches, more preferably in the range of 9 to 11 inches, and most preferably 10 inches, more or less. The width of the upper portion is at least slightly larger to achieve sloping sidewalls  102 ,  104 . The width WG of the bottom edge  120  of the extremity opening or entry channel  110  may be in the range of 2 to 5 inches, more preferably in the range of 2.5 to 4.5 inches, and most preferably 3.5 inches, more or less. The sides  602 ,  604  of the gap preferably slope inwardly and downwardly from the upper edge E, with rounded corners throughout to enhance comfort.