Automated-feed surgical clip applier and related methods
View Patent ↗A surgical clip applying apparatus comprises an actuator device, a pair of opposing jaws, and an elongate assembly interposed therebetween. A clip driving device disposed in the elongate assembly is actuated by the actuator device to sequentially drive clips through the elongate assembly into engagement with the jaws. A clip control element is disposed in the elongate assembly at a distal end thereof. The clip control element comprises first, second, and third clip control surfaces. The first clip control surface contacts a first end of a clip to cause the clip to rotate about the first end. The second and third clip control surfaces receive a second end of the clip therebetween prior to the clip being driven into engagement with the jaws. A chicane is provided near the distal end of the elongate assembly to provide a diverting path for clips so that as one clip is being rotated, the next clip can be further advanced without contacting the rotating clip.
1. An apparatus for applying surgical clips, each clip having first and second legs having respective distal end portions, comprising:
(a) an actuator device;
(b) first and second opposing jaw members communicating with the actuator device and movable to a closed position from an open position in response to actuation by the actuator device;
(c) an elongate assembly comprising a proximal end attached to the actuator device and an opposing distal end, the elongate assembly adapted for containing a serial arrangement of clips between the proximal and distal ends;
(d) a clip driving device disposed in the elongate assembly and communicating with the actuator device, and adapted for sequentially driving clips through the elongate assembly into engagement with the first and second jaw members in response to actuation by the actuator device; and
(e) a clip pivot surface disposed in the elongate assembly at its distal end for contacting the distal end portion of the first leg a clip to cause the clip to rotate about the distal end portion of the second leg of the clip in a plane spanning both legs of the clip prior to the clip being driven into engagement with the first and second jaw members.
2. The apparatus according to claim 1 wherein the actuator device comprises an axially translatable coupling attached in actuating engagement with the clip driving device.
3. The apparatus according to claim 2 wherein the actuator device comprises first and second opposing triggers pivotable toward each other from the open position to the closed position, the first and second triggers communicating with the coupling through a linkage mechanism for translating pivoting motion of the first and second triggers into axial motion of the coupling.
4. The apparatus according to claim 2 wherein the elongate assembly comprises a rod disposed distally in relation to the coupling and actuatable by the coupling into contact with the first and second jaw members to cause the first and second jaw members to move to the closed position.
5. The apparatus according to claim 4 wherein the rod is a hollow tubecircumscribing the clip driving device.
6. The apparatus according to claim 1 wherein the elongate assembly comprises a rod communicating with the actuator device and actuatable by the actuator device into contact with the first and second jaw members to cause the first and second jaw members to move to the closed position.
7. The apparatus according to claim 1 comprising a clip saddle surface disposed in the elongate assembly at its distal end for engaging a second end of the clip prior to being driven into engagement with the first and second jaw members.
8. The apparatus according to claim 7 comprising a clip control element disposed in the elongate assembly, wherein the clip control element comprises first and second resilient legs, the first leg comprises the clip pivot surface, and the second leg comprises the clip saddle surface.
9. The apparatus according to claim 8 wherein the elongate assembly comprises a channel member for guiding a clip toward the distal end, the clip driving device moves in relation to the channel member, and the clip control element is attached to the channel member.
10. The apparatus according to claim 7 comprising a clip retainer surface disposed in the elongate assembly, the clip retainer surface adapted to contact the clip while the clip pivot surface contacts the first clip end and the clip saddle surface engages the second clip end.
11. The apparatus according to claim 10 wherein the elongate assembly comprises a channel member for guiding a clip toward the distal end, the clip driving device moves in relation to the channel member, and the clip retainer surface extends from the channel member.
12. The apparatus according to claim 11 wherein the clip pivot surface and the clip saddle surfaces are defined on a clip control element attached to the channel member.
13. The apparatus according to claim 1 wherein the elongate assembly comprises a channel member for guiding the serial arrangement of clips toward the proximal end of the elongate assembly, the channel member comprising a base wall extending between the proximal and distal ends, the base wall comprising a first track for guiding a first side of a clip toward the distal end and a second track for guiding a second side of the clip toward the distal end, wherein the first track comprises a main section spaced from the second track by a track distance and a chicane section spaced from the second track at a greater distance than the track distance to define a diverting path for the second side of the clip.
14. The apparatus according to claim 1 wherein the clip driving device comprises a clip driving tab for sequentially driving clips from the elongate assembly into engagement with the first and second jaw members in response to actuation by the actuator device, and a clip rotating tab for rotating a clip while the clip contacts the clip pivot surface.