AUTOMATIC HEMOCLIP APPLIER

Abstract: A device (25) for storing, dispensing, and applying a plurality of hemostatic clips (30) to blood vessels and the like includes a longitudinally disposed frame (31) having a pistol grip (34) and an opposed trigger lever (36) extending from the proximal end thereof. A narrow, internal passageway (57) extends the length of the frame, from a loading opening at the proximal end to a fixed lower jaw (44) at the distal end of the frame (31). A plurality of hemostatic clips (30) is disposed in the passageway (57) with the points thereof extending toward the distal jaw portion. An upper jaw (43) extends from a clevis member (41) which straddles the frame (31) and is pivotally joined to an upper medial portion thereof. The trigger lever (36) is pivotable to cause the clevis member (41) to pivot upwardly and the upper jaw (43) to close upon the lower jaw (44) to crush a hemostatic clip (30) disposed therebetween. A piston (64) resiliently biased in the internal passageway (57) urges the hemostatic clips (30) toward the jaw portion, and a feed release lever is disposed at the proximal end of the passageway to discharge a hemostatic clip (30) from the passageway (57) to the jaw portion with each full actuation of the upper jaw (43).

Description: AUTOMATIC HΞ OCL1P APPLIER The present invention generally comprises a device for storing, dispensing, and applying a plurality of hemostatic clips to blood vessels or the like. The most salient features of the invention are its ability to store a large number of hemostatic clips, its ability to dispense and apply the hemostatic clips in rapid sequence, its ability to crimp completely the legs of the hemostatic clip to effect total occlusion of a blood vessel, and its ability to be sterilized and re-used many times. The device also includes a magazine-type reloading assembly which facilitates rapid reloading of the device, A hemostatic clip, for example, HSMOCLI?* brand of hemostatic occluding device (* a trademark of Ξdward Week S Company, Inc.) , comprises a generally V-shaped or U-shaped metal member which is designed to receive a blood vessel within the concave portion thereof. The hemostatic clip is adapted to be flattened by a special tool so that the opposed legs thereof are brought together as closely as possible to squeeze "the blood vessel therebetween and block blood flow therethrough. Hemostatic clips have gained wide acceptance in the medical field, particularly for use in surgical pro¬ cedures and in emergency treatment procedures. The reason for this wide-spread acceptance is the rapidity with which hemostatic clips can be applied to shut off bleeding blood vessels at a surgical site or at the site of trauma due to accident. However, a major drawback in the use of hemostatic clios is the soeciai tools known in the ; U^ πrior art which are adapted for applying the hemostatic clips. Many of these tools are merely pliers having special jaws adapted to engage a hemostatic clip. These devices require that the hemostatic clips be applied one at a time, and that, the tool be resupplied with a fresh hemostatic clip after a dispensing procedure is finished. There is obviously a great amount of time which is wasted in supplying and applying the hemostatic clips one at- a time, and this time may be very critical to a patient undergoing treatment or surgery. Other devices known in the prior art for applying hemostatic clips * are capable of substantially flat¬ tening a hemostatic clip about a blood vessel, yet are incapable of completely flattening the hemostatic clip to completely shut off the blood flow in the vessel. This fault may be linked to designs based on the concept of disposabilit , and the concorrt it nt requirement of cheap materials which lack the strength and rigidity required to apply a hemostatic clip properly- The device of the present invention includes a longitudinally extending frame having a pistol grip and an opposed trigger lever extending from the proximal end of the frame. The distal end of the frame includes a fixed lower jaw and a oveahle upper jaw which are adapted to crimp together the opposed legs of a V-shaped or U-shaped hemostatic clip. The upper jaw is secured to a clevis member which straddles the uoper medial portion of the frame and c:.: is pivotally secured thereto. The proximal end of the clevis member is engaged by a roller which is pivotally supported on the distal end of the trigger lever. The trigger itself is adapted to undergo a compound movement consisting of an initial translation toward the proximal end of the frame when the trigger is squeezed toward the handle, followed by a pivoting motion in which the roller at the distal end of the trigger lever engages the proximal end of the clevis member to rotate the upper jaw downwardly into impingement with the lower jaw. An enclosed feed path for storing and dispensing the plurality of hemostatic clips extends the length of the frame, and includes a longitudinal passageway having a narrow rectangular cross-sectional con¬ figuration. One narrow side f the passageway is defined by a sinusoidal leaf spring. The plurality of hemostatic clips is disposed in column fashion in the passageway with the pointed ends thereof extending toward the distal end of the frame, with like legs of the hemostatic clips impinging upon the sinusoidal leaf spring. A spring biased piston rod impinges upon the proximal-most hemostatic clip and urges the column of hemostatic clips toward the distal end of the frame in closely spaced relationship. The sinus¬ oidal spring at one edge of the passageway prevents the pointed ends of the hemostatic clips from binding as they translate along the passageway under the resilient urging of the piston rod. A hemostatic clip releasing member includes a rod disposed translatably in a track formed in the exterior of the frame and extending parallel to the interior passageway. The proximal end of the clip releasing member is secured to the trigger lever for translation thereby, while the distal end of the clip releasing member includes a stop dog which extends into a window in the distal-most portion of the in¬ terior passageway in the frame. A button extends outwardly from the clip releasing member, and is engageable by a notch in the clevis member which supports the upper jaw. As the upper jaw descends to crimp a hemostatic clip, the button is urged outwardly by the notch in the clevis member, so that the stop dog is urged out of the window in the passageway to permit a single hemostatic clip to advance to the end of the passageway. The hemostatic clip is halted by the upper jaw which blocks the distal end of the passageway when it descends. When the trigger is released and the upper jaw returns to its fully open, quiescent position, the stop dog returns to its blocking position within the window at the distal end of the passageway. The stop dog translates forward as the trigger is released to urge the dispensed hemostatic clip distally into opposed grooves in the upper and lower jaw. The hemostatic clip is thus advanced and positioned to be applied by the next actuation of the trigger lever. Thus every operation of the device applies one hemostatic clip while dispensing and oreoarinσ another hemostatic clip for subsequent application. The hemostatic clip applying device of the present invention will be described in more detail with reference to the accompanying drawings which show an illustrative specific embodiment of the invention and in which: Figure 1 is a plan view of the hemostatic clip applying device of the present invention. Figure 2 is a perspective view of a typical hemostatic clip application. Figure 3 is a top view of the hemostatic clip applying device of the present invention. Figure 4 is a partially cut-away side view of the device shown in Figures 1 and 3. Figure 5 is a side elevation of the hemostatic clip advancing mechanism of the present invention, shown in the extended position. Figure β is an end view of the hemostatic clip advancing apparatus shown in Figure 5. Figure 7 is a partial side elevation of the hemostatic clip advancing apparatus , shown in the retracted position. Figure 8 is a partial side elevation showing the jaw portion of the invention at the beginning of a dispensing procedure. Figure 9 is a cross-sectional view of the jaw portion of the invention, taken along lines 9-9 of Figure S. Figure 10 is a partial side elevation of the jaw portion of the invention, shown after initiation -^J!*-Ξ of a dispensing sequence. Figure 11 is a cross-sectional view of the jaw portion of the invention, taken along line 11-11 of Figure 10. Figure 12 is a partial side elevation of the jaw portion of the invention, showing the upper jaw descending to crimp and flatten a hemostatic clip while another hemostatic clip is advanced toward the jaws. Figure 13 is a cross-sectional elevation of the device, taken along line 13-13 of Figure 12. Figure 14 is a partial side elevation of the jaw portion of the invention, shown with the jaws close to complete closure. Figure 15 is a side elevation of the jaw portion of the invention, showing the jaws thereof in the completely closed disposition. Figure 16 is a cross-sectional elevation of the device, taken along line 15-16 of Figure 15. Figure 17 is a side elevation of the jaw portion of the invention, shown with the jaws reopened fully and the clip releasing member in the retracted position. Figure 18 is a side elevation of the jaw portion of the invention, with the aws fully open and the clip releasing member fully advanced. Figure 19 is a partial cross-sectional elevation of the device, showing the internal passageway for storing and dispensing hemostatic clips . Figure 20 is an enlarged cut-away view of a portion of the internal passageway of the invention. Figure 21 is a partial cut-away view of the reloading magazine of the present invention. Figure 22 is a cross-sectional view of the reloading magazine of the present invention. Figure 23 is a plan view of the reloading magazine of the present invention. With reference to Figure 1, the preferred em¬ bodiment of the present invention generally com¬ prises a pistol-like device 25 for storing a plurality of hemostatic clips, and for dispensing and applying the hemostatic clips singularly and sequentially. As shown in Figure 2, the hemostatic clips 30 referred to herein generally comprise a V-shaped base portion 26 and a pair of leg members 27 ex- tending distally from the base portion. The base portion and the leg members define an opening which is adapted to receive a blood vessel 23 or the like. Hemostatic clips are formed of a rather stiff, form- retaining metal wire or the like, and are adapted to be deformed by crimping to bring the leg members 27 as closely adjacent as possible and in generally parallel relationship. As shown in Figure 2, the crimped hemostatic clips will collapse the walls of the blood vessel 28 and prevent fluid flow therethrough, Such hemostatic clips are known in the prior art, and are in common usage for medial and surgical procedures . With reference to Figures 1, 3, and 4, the device 25 comprises a frame member 31 which extends longi¬ tudinally from a proximal end 32 to a distal end 33. As shown in Figure 3 , the lateral width of the frame 31 is much smaller than the longitudinal extent there¬ of. A handle portion 34 extersds downwardly from the proximal end of the frame in the fashion of a pistol grip. A trigger assembly 36 extends generally parallel to and distally of the handle portion 34. The trigger assembly 36 is disposed to be engaged by the index finger and second finger of the hand (left or right) grasping the handle 34. It may be noted that the upper edge 37 of the frame 31 extends obliquely upwardly from the distal end 33 toward the medial portion of the frame. A longitudinally extending, slot-like cutout 38 extends concavely into the upper edge 37 of the frame, and includes a notch 106 extending distally therefrom. An upper jaw assembly 39 includes a clevis portion 41 which straddles the distal upper portion of the frame and is pivotally secured thereto by a pivot pin 42. Extending distally and longitudinally from the clevis portion 41 is an upper jaw 43. The upper jaw 43 is in closely adjacent opposition to a lower jaw 44 which extends distally and fixedly from the frame 31. It may be appreciated that counter-clockwise rotation of the clevis member 41 about the pivot 42 will cause the upper jaw 43 to advance toward and impinge upon the lower jaw 44. The upper jaw assembly 39 also includes a longi¬ tudinally extending slot 101 formed therein and adapted to receive a block 102. The block is secured in the narrow slot by a pair of screws 103 which are received in tapped holes therein. An arm spring 104 extends distally from the block 102, the distal end of the arm spring being engaged in the notch 106. Rotation of the upper jaw assembly in a counter¬ clockwise direction causes flexure of the arm spring 104, the restoring force of which acts to return the jaw assembly to its quiesscent position shown in Figures 1 and 4. The means for rotating the upper aw portion and clevis portion of the device is the trigger assembly 36. The trigger lever 46 extends downwardly from a clevis portion 47 which straddles the lower medial portion of the frame 31. A roller 48 is rotatably secured between the upper ends of the clevis member 47, the roller 48 being disposed in the slot 38 and impinging upon the proximal oblique surface 49 of the upper jaw assembly 39. With reference to Figure 4, a slot 51 is disposed in the lower medial portion of the fram , extending parallel to the longitudinal axis of the frame. Another slot 50 is disposed in the lower medial portion of the frame distally of the slot 51 and generally aligned therewith. A pin 52 extends freely through the slot 50, and also through both sides of the clevis portion 47. With reference to Figure 1, a longitudinally bifurcated slide member 53 is trans- latably secured in the slot 51, and is joined by a screw 55 extending freely through the slot 51 and received in both sides thereof. A compression spring 45 disposed at the proximal end of the slot 51 im¬ pinges on the screw 55 and biases the slide member 53 This resilient force tends to oppose the actuation of the trigger assembly by the well-known motion of squeezing the trigger and urging it toward the handle 34. It may be appreciated that actuation of the trigger mechanism produces a complex motion of the trigger assembly. Initial squeezing of the trigger toward the handle causes the slide 53 to translate toward the proximal end of the slot 51. After full translation of the slide member 53, when the pin 52 abuts the proximal end of the slot 50, further squeezing of the trigger will cause it to pivot about the pin 52 in a counter-clockwise direction (Figures 1 and 4) . The rotation about the pivot 52 causes the roller 48 to translate toward the distal end of the device and traverse the oblique surface 49 of the upper jaw assembly. This " action causes the upper jaw assembly to pivot in the counterclockwise direction about the pin 42, so that the upper jaw 43 closes upon the lower, fixed jaw 44. The relatively large distance between the pivot 42 and the oblique surface 4 ' 9 provides a long lever arm which creates a large mechanical advantage in the closure of the jaws 43 and 44. With continued re erence to Figures 1 and 4, a slot 56 extends deeply into the proximal end of the frame and is disposed coaxially with the longitudinal axis thereof. An interior passageway 57, shown also in Figures 19 and 20, extends the length of the frame member from the distal end of the slot 56 to the distal end 33 of the frame. The interior passageway is provided with a narrow rectangular cross-section, the upper side of the cross-sectional configuration being defined by a movable blade wall 60 backed by a leaf spring 58 formed as a smooth, periodic curve. The ^\ ~ - C_!? passageway 57, which comprises an enclosed channel, is dimensioned to receive a plurality of hemostatic clips 30 with the pointed legs 27 thereof pointing toward the distal end of the passageway and abutting the V section 26 of. the adjacent hemostatic clip. In the preferred embodiment of the present invention, at least twenty hemostatic clips can be stored along the full length of the passageway 57. The proximal end of the blade wall 60 is formed as a lip extending into the passageway to prevent loss of the clips therein during loading procedures. The present invention also includes a spring plunger assembly 61, as shown in Figures 3-7. The assembly 61 includes a hollow cylindrical member 62 which is closed at its proximal end to retain therein a 'helical compression spring 63. A plunger 64 extends outwardly from the tubular member 62 through a slot opening 66 (Figure 5) disposed generally co-axially with the tubular member 62. The plunger 64 includes an internal stop lug 67 which limits the outward translation of the plunger. The distal end of the plunger is provided with a V-shaped notch 63 which is adapted to engage the V-shaped base portion 26 of a hemostatic clip. The distal vertices of the notch 68 are bevelled to prevent interference with the lip at the proximal end of the blade wall 60. The cylindrica member 62 includes a pair of diametrically opposed, longitudinally extending grooves which are adapted to engage the opposed sides of the slot 56 of the frame member. The plunger 64 is provided with serial numerical indicia spaced consecutively along a medial portion thereof . It mav be appreciated that the plunger 64 is adapted to be received within the closed passageway 57 of the frame member, with the tubular member 62 received in the slot 56 of the frame. Assuming that the passageway 57 is initially filled with hemostatic clips in abutting relationship, the plunger 64 is substantially retracted within the tubular member 62, compressing the spring 63 in the proximal end of the tubular* member, as shown in Figure 7. The expansion force of the spring 63 urges the plunger toward the distal end of the passageway 57, maintaining the hemostatic clips in abutting relation¬ ship within the passageway. It may be appreciated that the movable blade wall 60 yields toward the smoothly curving spring 58 under slight pressure to prevent the pointed ends of the hemostatic clips from sticking and binding within the passageway. A display window 71 extends from a medial external portion of the frame to intersect with the passageway 57. The window 71 displays the serial numerical indicia which are formed on the plunger 64. As hemostatic clips are dispensed from the distal end 33 of the device, the plunger advances incrementally toward the distal end of the passageway 57, and the serial numerical indicia passes decrεmentally past the display window 71, The indicia on the plunger 64 are positioned so that the number displayed in the window 71 corresponds to the number of hemostatic clips remaining within the passageway 57. A detent screw assembly 72 is disposed in the upper medial portion of the frame member, and is adapted to retain the spring plunger assembly 61 in its operative relationship with the fram . At the distal end of the frame, the passageway 57 extends to and opens to the fixed lower jaw 44 and rotatable upper jaw 43. Each of the jaws 43 and 44 is provided with a longitudinally extending groove 73. With the upper jaw in the fully open position, the two grooves 73 are aligned directly with the upper and lower extents of the inner passageway 57. The grooves 73 are adapred to receive the leg portions 27 of a hemostatic clip, as. shown, for example, in Figure 8. The distal-most end of the passageway 57 is provided with a cutout, or window 74, formed in the side wall of the passageway 57. A longitudinally extending track 77 is formed in the outer side surface of the frame, extending from the distal-most ortion thereof to the medial portion thereof ad¬ jacent to the trigger assembly and disposed parallel to the internal passageway 57. Received in the track 77 is a slide member 76 which is adapted for longi- tu ±πal translation along the track. The proximal end of the slide member 76 is provided with an arm 78 extending perpendicularly therefrom and joined ro the trigger assembly by the pin 52 extending therethrough. It may be appreciated that the slide member 76 is caused to translate reciprocally in the track 77 by actuation of the trigger assembly, as described in the foregoing. With particular reference to Figures 8-11, the distal end of the member 76 is provided with a V- shaped notch 7SA which is configured to engage the V portion 26 of a hemostatic clip . Directly adjacent to the notch 78A is a shoulder 79 which has the same V configuration as the notch 73A, and which extends laterally inwardly through the window 74 and into the passageway 57. As the column of hemostatic clips advances through the passageway 57 to the distal end thereof, the shoulder 79 acts as a srop to limit trans¬ lation of the clips. Extending laterally outwardly from the member 76 is a clip release button 81. The button 81 extends from a short shank 82 which projects outwardly from the member 76. The upper jaw assembly 39 is provided with a semi-circular notch 83 formed in the lower edge of the clevis member 41 which is disposed on the same side of the device as the button 81. The notch 33 is flanked on either side by a pair of oblique camming surfaces 84 which extend downwardly and inwardly in the same edge of the clevis member 41. The notch 83 is slightly larger in diameter than the shank 82 so that the latter may be received in the former. The camming surfaces 84 are adapted to impinge upon the inner sur¬ face of the button 31, as shown in Figures 12 and 13, so that the button and the member 75 are urged laterally outwardly by the camming surfaces 84 uring closure of the upper jaw assembly. The lateral outward movement of the member 75 causes the shoulder 79 at the end thereof to move out of its blocking position in the window 74 of the passageway 57, so that a hemostatic clip may be released by the shoulder 79 and permitted to advance to the distal end of the Das acr wav 57. Ki ' The sequence of operation of the preferred embodiment may best be understood with reference to Figures 8—18 taken in sequence. As shown in Figures 8 and 9, the device 25 is initally in its quiescent disposition with the trigger assembly fully released, the slide member 7S extending fully forwardly between the jaws 43 and 44 , and a hemostatic clip lodged in the grooves 73 of the upper and lower jaws 43 and 44. It may be appreciated that in this disposition the button 81 is longitudinally offset from the notch 83 and the camming surfaces 84. Also, the moveable jaw 43 is fully open. Initial adduction of the trigger lever 46 against the spring force of the spring 45 causes an initial translation of the trigger assembly toward the proximal end of the device. As a result, the members 53 and 75, which are joined to the trigger assembly by the pin 52, are caused to translate in concert with the trigger assembly. The shoulder 79 in the window 74 pushes the column of hemostatic clips proximally against the spring force of the spring 63 as the end 78 moves proximally to clear the jaws. At full translation of the trigger assembly, the button Si is brought into registration with the notch 83, as shown in Figure 10, and the member 76 is completely retracted from its quiescent position between the jaws. After the trigger assembly has translated to its limit, further squeezing of the trigger lever 46 causes the trigger assembly to rotate about the pin 52. As described in the foregoing, this rotation causes the roller 43 to traverse the oblique surface 49 of the upper jav assembly, and to rotate thereby the upper jaw assembly about the pin 42 against the spring force of the spring arm 104. As a result, the upper jaw 43 begins to descend toward the lower jaw 44, as shown in Figures 12 and 13. The hemostatic clip which is lodged between the jaws 43-and 44 is caused to undergo initial crimping which brings the pointed ends thereof together and captures therebetween a blood vessel or the like. As the upper jaw assembly continues to descend, the camming surfaces 84 engage the inner surface of the button 81, driving the button laterally outwardly. When the jaw is substantially closed, as shown in Figure 14, the member 76 is driven laterally out¬ wardly a sufficient distance to remove the shoulder 79 from its blocking position in the window 74 of the passageway 57. At that point a single hemostatic clip is driven fσrwardly by the resilient pressure of the - plunger 64 in the passageway 57. The single clip thus advances distally of the notch end 73 of the member 75. However, due to the substantially closed position of the upper jaw 73, the released hemostatic clip can advance only to the distal-most portion of the passage¬ way 57. The released clip is thus prevented from interfering with the closing of the jaws as they effect total flattening of the hemostatic clip which is being applied at the same time (Figure 15) , and total collapse of the blood vessel to which the clip is applied. Also, the limited translation of the released hemostatic clip assures that only one clip may advance beyond the shoulder 79 during each actuation of the devic . As the trigger lever 46 is released following full closure of the jaws 43 and 44, the upper jaw assembly is rotated upwardly by the restoring force of spring 104 so that the notch 83 and camming surfaces 84 disengage the button 81. The shoulder 79 then resumes its blocking position in the window 74, and the upper jaw returns to its fully open position (Figure 171. Further release of the trigger lever causes the trigger assembly to translate toward the distal end of the device under the urging of the spring 45. The V-shaped notch 73A in the distal end of the member 76 engages the portion 26 of the he o- static clip just released, and pushes the clip distally toward the jaws 43 and 44. With the j ws fully opened, the grooves 73 formed therein are aligned with the passageway 57, so that the slide member 76 may push the released hemostatic clip distally into the grooves 73 of the jaws. Thus the completion of one hemostatic clip application disposes the device 25 to be ready % to be used immediately for another application procedure. As the column of hemostatic clips within the passageway 57 advances toward the distal end and is individually dispensed and applied, the numerical indicia displayed in the window 71 of the device decrements by one digit to indicate the number of hemostatic clips remaining within the device- A salient feature of the present invention is the provision of a reloading magazine system particu¬ larly adapted for the device. As shown in Figures 22 and 23, a loading magazine 91 is provided with a generally rectangular cross-section, and a pair of opposed grooves 92 extending longitudinally there¬ along. An internal passageway 93 extends longitudin¬ ally in the magazine 91, and communicates with a slot -13- αpening 94 which also extends the length of the magazine. As disclosed previously in the device 25, one side of the internal passageway 93 is formed by a movable blade wall backed by a leaf spring 96 having the configuration of a smooth periodic curve. The blade yields toward the spring 96 and prevents binding of the hemostatic clips _y which are received in the passageway 93. The magazine 91 includes a slide member 97 which is received in the slot 94 and extends inwardly into the passageway 93. The slide member 97 is provided to translate a column of hemostatic clips which are disposed within the passageway 93. As shown in Figure 21, the magazine 91 is used by first loosening the detent screw assembly 72 and removing the tubular member 62 and the associated plunger 64 from the device 25. The magazine 31 is then introduced into the slot 56 with the longitudinal notches 9-2 of the magazine engaging the opposed sides of the slot 56. The magazine is fully inserted in the slot 55 so that the interior passageway 93 of the maga¬ zine is brought into abutuing registration with the interior passageway 57 of the device 25. Thereafter, the slide member 97 is translated along the slot 94 to urge the column of hemostatic clips disposed in the p assageway 93 to translate distally and transfer into the passageway 57 of the device 25. In this way, twenty or more hemostatic clips may be reloaded into the device 25 within a few seconds. The magazine 91 is then removed from the slot 56, and the plunger 64 and tubular * member 62 are re-insrailed in the device 25. It should be noted that there is a unique relationship among the springs 45, 63, and 104. It is necessary that the sum of the restoring forces applied to the pivot 52 by the springs 45 and 53 is less than the restoring force of the spring 104 acting on the same pivot. This condition assures that initial actuation of the trigger will cause initial translation of the trigger mechanism. If the sum of the restoring forces of the springs 45 and 63 is more than the force applied by the arm spring 104, the trigger assembly will initially rotate before translating, and the device will fail to operate properly. Zt may be appreciated that the procedure involved in dispensing and applying a hemostatic clip using the present invention is extremely quick and easy to accomplish, using the manual force of one hand. Each dispensing and applying cycle rearms the device wirh a newly released clip which is ready to be applied in a subsequent hemos aric clip applying procedure. The rapidity with which the present invention may be employed in tying off blood vessels provides an important advance in surgical techniques. Likewise, the ability to reload the present invention quickly and easily with a full supply of hemostatic clips also minimizes wasted surgical time. It may be appreciated that the entire device 25 can be auto- ciaved and sterilized for reuse. strength of the construction of the j.:_ s__i _.u:i achieves a flattening of the hemostatic clips to within a few thousandths of an inch, fa: device known in the prior art.

Claims: What is claimed is : 1. A device for storing, dispensing, and applying hemostatic clips , comprising a longitudinally extending first member having a proximal end and a distal end; means for sotring a plurality of hemostatic clips, comprising a passageway extending longitudinally * in said first member and adapted to receive said plurality of hemostatic clips in column fashion; means for advancing said column of hemostatic clips toward said distal end of said first member; jaw means adjacent to said distal end of said first member for crimping and flattening each of said hemostatic clips, clip releasing means disposed adjacent to said distal end of said first member for releasing and advancing each of said hemostatic clips singularly and con¬ secutively from said column in said passageway to said jaw means; and manual lever means for actuating said jaw means and said clip releasing means. 2. The device of claim 1, wherein said jaw means includes a first jaw extending fixedly from said distal end of said first member, a second member pivotally secured to said first member at a first pivot axis, and a second jaw extending from said second member in spaced apart opposition to said first jaw and adapted to be rotated into impingement with said first jaw. 3. The device of claim 2 , wherein said second member includes a clevis portion straddling a distal and medial oortion of said first member. 4. The ' device of claim 2 or 3, further in¬ cluding a pair of parallel, longitudinally extending grooves formed in the confronting surfaces of said first and second jaws, said grooves being configured to receive and retain the opposed leg portions of a hemostatic clip. 5. The device of any one of claims 1 to 4 , wherein said manual lever means includes a trigger assembly extending from a medial portion of said first member. 6. The device of claim 5, wherein said trigger assembly includes a trigger clevis portion straddling a medial portion of said first member and pivotally secured thereto, and a trigger lever extending from said trigger clevis portion. 7 . The device of claim β, further including a closed slot extending longitudinally in said first member adjacent to said trigger assembly, and a pivot pin extending through said slot and through said slot and through said trigger clevis portion, said pin being translatably disposed in said slot and said trigger clevis portion being pivotable about said pin. S. The device of claim 7, further including a camming surface disposed on a proximal portion of said second member, and roller means secured to said trigger clevis portion for engaging and traversing sai camming surface to rotate said second member cloc wise about said first pivot axis as said trigger lever is rotated clockwise about said trigger pivot oin. i 9. The device of claim 7 or 8, further in¬ cluding first compression spring means associated with said means for advancing said column of hemostatic clips, second compression . spring means acting on said pin and opposing proximal translation thereof, and third spring means associated with said second member to oppose rotation of said second jaw into impingement with said first jaw, the sum of the restoring forces of said first and second spring means being less than the restoring force of said third spring means . 10. The device of any one of claims 1 to 9 wherein said passageway includes a movable blade wall backed by resilient means extending therealong to prevent binding of said hemostatic clips in said passageway. 11. The device of claim 10, wherein said resilient means includes a leaf spring having the form of a smooth, periodic waveform. 12- The device of claim 10 or 11, wherein said movable blade wall defines one side of said passageway on which the pointed legs of said hemostatic clips impinge- 13. The device of any one of claims 1 to 12, wherein said means for advancing said column of hemo¬ static clips includes a plunger translatabiy and removably disposed in said passageway * , and means for urging said plunger toward said distal end of said first member. 14. The device of claim 13, wherein said last mentioned means includes a hollow tubular member re ovably secured to said proximal end of said first member, first compression spring means disposed in said tubular member, said plunger being translatably secured at one end within said tubular member and impinging on said first compression spring means . 15. The device of claim 14, wherein said first member includes a slot cutout formed in the proximal end thereof and communicating with the proximal er-ά. of said passageway, said tubular member being removably secured insaid slot cutout. 16. The device of any one of claims 1 to 15, wherein said clip releasing means includes a slide member, means for joining said slide member to said first member for longitudinal translation therealong, and means for joining the proximal end of said slide member to said manual lever means for reciprocal translation therewith- 17. The device of claim IS, further including an access window extending from the exterior of said first member to said passageway at the distal end thereof, and stop lug means disposed at the distal end of said slide member and projecting through said access window into said passageway to engage and limit distal translation of the most distal one of said hemostatic clips in said passageway. 13. The device of claim 17, further including means for urging said stop lug laterally outwardly to disengage and pass said mos- distal he os-atic clip to said jaw means. 19 Tne device or claim ±b, ■ Λ.Li±_=_._ * ..: sa: aw law, and said last mentioned means includes a camminc surface ishesad on said movable aw. 20. The device of claim 19, further including button means extending outwardly from said slide member and adapted to engage said camming means during actuation of said movable jaw. 21. The device of any one of claims 17 to 20, further including a V-shaped notch at the distal end of said slide member for engaging and translating into said jaw means each of said hemostatic clips after release by said stop lug means. 22. The device of claim 1, wherein said first member is a frame member having narrow lateral width and a handle extending downwardly from the proximal end, a trigger assembly disposed adjacent to said handle, a fixed lower jaw extending from the distal end of said frame member, a first clevis member straddling an upper medial portion of said frame and pivotally secured thereto, an upper jaw extending distally from said clevis member and positioned to be rotated by said clevis member into impingement with said lower jaw, said trigger assembly including a second clevis member straddling a medial portion of said frame member and a trigger lever extending down¬ wardly from the lower end of said clevis member, a roller secured to the upper end of said clevis member, an oblique camming surface disposed at the proximal end of said first clevis member and adapted to be engaged by said roller, said passageway extending longitudinally through said frame member and having a distal end opening between said upper and lower jaws, said means for advancing said column of hemosratic clips including a plunger received translatabiy in- said passageway and compression spring means for urging said plunger toward said passageway, a slide member translatably secured to the exterior of said frame member, means for joining the proximal end of said slide member to said second clevis member, an access window formed in the distal end of said passageway, a stop lug secured to the distal end of said slide member and disposed to extend through said window to said passageway to limit distal translation of said hemostatic clips in said passageway, button means extending outwardly from said slide member, and means secured to said upper jaw for engaging said button means and urging said button means, said slide member and said sτ.op lug outwardly to release and advance the distal one of said hemostatic clips as said upper jaw descends to impinge upon said lower jaw. 23. The device of any one of claims 1 to 22, further including means for indicating the number of hemostatic clips in said column in said passageway. 24. The device of claim 23, wherein said last mentioned means includes a display window extending from the exterior of said first member to said passageway. 25. The device of claim 24, further including serial numerical indicia formed on a plunger trans- 1at bly and removably disposed in said passageway as a part of said means for dvancing said column of hemostatic clips, said plunger disposed to decrement past said window as said column of hemostatic clips advances incrementally along said passageway. 26. The device of any one of claims 1 to 25, further including magazine reioadir. ιsa..a _-, _- suooivinq- nemcstaπc -o said πassa rewa . 27. The device of claim 26, wherein said magazine means includes a magazine housing having a second plurality of hemostatic clips retained therein, and means for releasablv securing said magazine housing to the proximal end of said passageway. 28. The device of claim 27, further including a guideway extending through said magazine housing, said second plurality of hemostatic clips being stored in said guideway in column fashion. 29. The device of claim 28, wherein one side of said guideway is defined by a movable blade wall backed by a leaf spring having the configuration of a smooth, periodic wave. 30. The device of claim 23 or 29, further including means for translating said second plurality of hemostatic clips from said guideway to said passageway * in column order. 31. The device of claim 30, wherein said last mentioned means includes a slot opening in said magazine extending parallel to said guideway and opening thereto, and an ejection member transiatabiy disposed in said slot opening and engaging said second plurality of hemostatic clips.

Inventors: PETERS RONALD LEE, PETERS RUDOLPH, TAYLOR WILLIAM
Applicants: WECK & CO INC EDWARD
Application year: 1982
Main classification: A61B17
IPC codes: A61B17