AUTOMATIC SURGICAL LIGATION CLIP APPLIER

• US 20130253540A1
• Filed: 09/14/2012
• Published: 09/26/2013
• Est. Priority Date: 09/15/2011
• Status: Active Grant

• Current Assignee: Teleflex Medical Incorporated (Teleflex Incorporated)
• Original Assignee: Teleflex Medical Incorporated (Teleflex Incorporated)
• Inventors: CASTRO, Salvatore, RAMSEY, Michael, MONAHAN, Dan, WHITING, Paul, MORRIS, Steven, THORNTON, Curtis, WILLETT, Lynn, SCHMIDT, Philip, LEHMAN, Adam, ADAMS, Leland Ray, BACHMAN, Alan, LABARBERA, Bradley J.
• Granted Patent: US 9,271,737 B2
• Time in Patent Office: Days
• US Class Current: 606/143
• CPC Class Codes: A61B 17/0643 with separate closing member, e.g. for interlocking with staple
• CPC Class Codes: A61B 17/122 Clamps or clips , e.g. for the umbilical cord for the vas deferens A61F6/206
• CPC Class Codes: A61B 17/128 for applying or removing clamps or clips
• CPC Class Codes: A61B 17/1285 for minimally invasive surgery
• CPC Class Codes: A61B 2017/2845 with a spring pushing the handle back
• CPC Class Codes: A61B 2017/2912 transmission of forces to actuating rod or piston
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft
• CPC Class Codes: A61B 2017/2936 Pins in guiding slots
• CPC Class Codes: A61B 2017/2937 with flexible part

Abstract

An applier for ligation clip is provided. The applier includes: an outer tube having mounting bosses; a pair of jaws pivotally connected to the mounting bosses, the jaws having actuating projections; a feed tube located in the outer tube and configured to move axially within the outer tube, the feed tube having actuating slots in which the actuating projections are located; a clip lock arm located in the outer tube and configured to move axially within the outer tube; and a clip advance arm located in the outer tube and configured to move axially within the outer tube, the clip advance arm having flexible pinchers at one end of the clip advance arm. A method of applying a ligation clip is also disclosed.

Claims

1. An applier for ligation clip comprising:

an outer tube having mounting bosses;

a pair of jaws pivotally connected to the mounting bosses, the jaws having actuating projections;

a feed tube located in the outer tube and configured to move axially within the outer tube, the feed tube having actuating slots in which the actuating projections are located;

a clip lock arm located in the outer tube and configured to move axially within the outer tube; and

a clip advance arm located in the outer tube and configured to move axially within the outer tube, the clip advance arm having flexible pinchers at one end of the clip advance arm.

2. The applier of claim 1, wherein the actuating slots are configured to cause the jaws to open when the feed tube is moved in a direction toward the jaws and close the jaws when the feed tube is moved in a direction away from the jaws.

3. The applier of claim 1, further comprising spring fingers on the feed tube configured to prevent a clip in the applier from moving away from the jaws when the clip advance arm is moving away from the jaws.

4. The applier of claim 1, further comprising a slot in the feed tube and a portion of the clip lock arm extends through the slot in the feed tube.

5. The applier of claim 1, wherein the flexible pinchers are configured to move over legs of a clip located in the applier and move the legs to a closed position.

6. The applier of claim 1, wherein the flexible pinchers are configured to press on a rear portion opposite of legs on a clip to move to legs to an open position.

7. The applier of claim 6, wherein the flexible pincher press on the rear portion opposite the legs on the clip to an open position when the clip moves into the jaws.

8. The applier of claim 1, further comprising a spring loaded clip stack pusher configured to urge a stack of clips in the applier to a direction toward the jaws.

9. The applier of claim 8, wherein the stack pusher is configured to extend into the jaws when there are no clips in the applier.

10. The applier of claim 1, wherein the clip lock arm is dimensioned and configured to, when moved forward, contact a buttress in a clip located in the jaws and move to buttress forward into a locking void to thereby lock the clip in a closed position.

11. The applier of claim 1, further comprising a handle having a pivoting lever operably connected to the clip lock arm, the feed tube, and the clip advance arm to move the clip lock arm, the feed tube, and the clip advance arm axially within the outer tube by pivoting the lever.

12. The applier of claim 11, further comprising a spring biasing the lever to a first position.

13. The applier of claim 11, wherein the handle further includes a jaw link operatively connected to the feed tube and the lever and actuation of the lever causes the jaw link to move the feed tube to a proximal position and further actuation of the lever causes the jaw link to stop moving the feed tube instead flex a spring.

14. The applier of claim 1, further comprising recesses at a distal end of the jaws configured to capture ends of a clip to retain the clip in the jaws.

15. The applier of claim 14, further comprising slanted surfaces defining at least in part the recesses and configured to communicate with slanted surfaces on the legs of a clip to retain the clip in the jaws.

16. The applier of claim 1, further comprising tabs in the outer tube configured to retain the clip advance arm.

17. The applier of claim 1, wherein the feed tube is dimensioned to store a stack of clips in a closed or semi-closed condition.

18. The applier of claim 1, wherein the outer tube has a diameter of about 5 mm.

19. A method of applying a ligation clip comprising:

sliding a feed tube forward thereby camming a projection on a jaw to move the jaw to an open position;

sliding a clip arm forward thereby pushing a clip into the jaws;

sliding the feed tube rearward thereby camming the projection on the jaw to move the jaw to a closed position; and

advancing a clip arm to a forward position to push a buttress on the clip into a buttress locking void thereby locking the clip and a closed position.

20. The method of claim 19, further comprising storing it a stack of clips in the feed to wherein the clips are in a semi-closed state.

21. The method of claim 19, further comprising actuating the feed tube with a lever and once the feed tube has moved rearward to close the jaws, diverting any additional force applied on a lever to a spring thereby limiting the closing force of the jaws.

22. The method of claim 19, further comprising opening the clip as it enters the jaws.

23. The method of claim 19 further comprising, advancing a clip stack pusher into the jaws once there are no more clips in the feed tube.

24. An applier for ligation clip comprising:

an outer tube having mounting bosses;

means for clamping pivotally connected to the mounting bosses, the means for clamping having actuating projections;

means for opening and closing the means for clamping located in the outer tube and configured to move axially within the outer tube, the means for opening and closing the means for clamping having actuating slots in which the actuating projections are located;

means for locking a clip in closed position located in the outer tube and configured to move axially within the outer tube; and

means for advancing a clip located in the outer tube and configured to move axially within the outer tube.