Apparatus for endoscopic procedures

• US 9,016,545 B2
• Filed: 08/21/2014
• Issued: 04/28/2015
• Est. Priority Date: 10/25/2011
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Aranyi, Ernest, Bronson, Dwight, Racenet, David
• Primary Examiner(s): Smith, Scott A.
• Application Number:
  US14/465,067
• Publication Number:
  US 20140361068A1
• Time in Patent Office: 250 Days
• Field of Search: 227/19, 227/175.1, 227/175.2, 227/176.1, 227/178.1, 227/180.1, 606/139, 606/153, 606/219
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/0483 Hand-held instruments for holding sutures A61B17/0469 takes precedence; other holders for needles or sutures A61B17/06061; surgical forceps A61B17/28; surgical pincettes A61B17/30
• CPC Class Codes: A61B 17/068 Surgical staplers , e.g. containing multiple staples or clampsstaplers containing only one staple A61B17/10; magazines or containers for staples A61B17/105; for performing anastomosis A61B17/115; staplers in general B25C5/00
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 17/07292 Reinforcements for staple line, e.g. pledgets
• CPC Class Codes: A61B 2017/00314 Separate linked members
• CPC Class Codes: A61B 2017/00323 Cables or rods
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/00473 Distal part, e.g. tip or head A61B2017/00464 takes precedence
• CPC Class Codes: A61B 2017/00685 Archimedes screw
• CPC Class Codes: A61B 2017/00734 battery operated
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/294 Connection of actuating rod to jaw, e.g. releasable
• CPC Class Codes: A61B 90/94 coded with symbols, e.g. text

Abstract

An end effector includes a first jaw member, a second jaw member, a drive beam, and a drive screw. The second jaw member is pivotally movable relative to the first jaw member between an open position and a closed position. The drive beam is positioned to engage the second jaw member and is longitudinally movable through the first and second jaw members. The drive screw is supported within the first jaw member and includes a threaded portion coupled to the drive beam such that rotation of the drive screw imparts longitudinal movement of the drive beam along the second jaw member to move the first and second jaw members from the open position to the closed position.

Claims

1. An end effector, comprising:

a first jaw member;

a second jaw member pivotably coupled to the first jaw member and movable relative to the first jaw member between an open position and a closed position;

a drive beam positioned to engage the first jaw member and the second jaw member, the drive beam longitudinally movable through the first and second jaw members;

a drive screw defining a longitudinal axis and being supported within the first jaw member, the drive screw including a threaded portion coupled to the drive beam such that rotation of the drive screw imparts longitudinal movement of the drive beam along the second jaw member to move the first and second jaw members from the open position to the closed position; and

a drive link having a proximal engagement portion configured to be coupled to a drive shaft and a distal engagement portion coupled to a proximal end of the drive screw, the drive link being disposed in non-parallel relation to the longitudinal axis of the drive screw.

2. The end effector according to claim 1, wherein the second jaw member includes a camming surface, and the drive beam includes a cam member translatably engaged to the camming surface of the second jaw member.

3. The end effector according to claim 2, wherein the drive beam further includes:

at least one retention foot coupled to the drive screw and is longitudinally movable therealong; and

a vertical support strut extending between the cam member of the drive beam and the at least one retention foot of the drive beam.

4. The end effector according to claim 1, wherein the first jaw member is configured to selectively receive a removable cartridge assembly including a plurality of fasteners.

5. The end effector according to claim 4, wherein the second jaw member includes an anvil having an inner fastener forming surface thereon.

6. The end effector according to claim 5, wherein the first jaw member is further configured to slidably support an actuation sled therein, the actuation sled being movable to urge the plurality of fasteners from the cartridge assembly.

7. The end effector according to claim 6, wherein the drive beam abuts the actuation sled such that during longitudinal movement of the drive beam the actuation sled is pushed along the cartridge assembly to urge the plurality of fasteners from the cartridge assembly.

8. The end effector according to claim 1, wherein the proximal engagement portion includes a socket configured and dimensioned to mechanically interface with a ball joint.

9. The end effector according to claim 1, wherein the distal engagement portion includes a pin configured and dimensioned to mechanically interface with a clevis disposed at a proximal end of the drive screw.

10. The end effector according to claim 1, further comprising:

a surgical buttress releasably secured to a tissue contacting surface of at least one of the first jaw member or the second jaw member; and

a release assembly disposed within at least one of the first jaw member or the second jaw member.

11. The end effector according to claim 10, wherein the drive beam is configured to actuate the release assembly to thereby release the surgical buttress from the at least one of the first jaw member or the second jaw member.

12. The end effector according to claim 1, wherein the drive beam further includes a knife blade disposed between the first and second jaw members.

13. The end effector according to claim 1, wherein rotation of the drive link effects rotation of the drive screw.