One handed stapler

• US 8,342,378 B2
• Filed: 06/02/2010
• Issued: 01/01/2013
• Est. Priority Date: 08/17/2009
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Marczyk, Stanislaw, Pribanic, Russell, Ross, Adam J., Zemlok, Michael A.
• Primary Examiner(s): Nash, Brian D
• Application Number:
  US12/792,244
• Publication Number:
  US 20110036892A1
• Time in Patent Office: 944 Days
• Field of Search: 227/176.1, 227/19
• US Class Current: 227/176.1
• 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 17/1155 Circular staplers comprising a plurality of staples
• CPC Class Codes: A61B 2017/00367 Details of actuation of instruments, e.g. relations between pushing buttons, or the like, and activation of the tool, working tip, or the like
• CPC Class Codes: A61B 2017/00398 using powered actuators, e.g. stepper motors, solenoids
• CPC Class Codes: A61B 2017/2929 with a head rotatable about the longitudinal axis of the shaft

Abstract

The present disclosure is directed to a surgical instrument, which includes a handle assembly and an elongate member having two jaw members. The second jaw member is movable in relation to the first jaw member between an open position and a closed position. The first jaw member is supported by the elongate body and contains a plurality of fasteners. The elongate member extends distally from the handle assembly and defines both a longitudinal axis and a distal portion. A switch is placed about the handle assembly to allow the handle assembly to operate in multiple modes.

Claims

1. A surgical instrument comprising:

a handle assembly including a handle;

an elongate body extending distally from the handle assembly and defining a longitudinal axis, the elongate body having a distal portion;

a first jaw member supported by the elongate body and containing a plurality of fasteners;

an second jaw member mounted adjacent the first jaw member, the second jaw member being configured to move in relation to the first jaw member between an open position and a closed position upon actuation of the handle assembly; and

a switch operatively connected to the handle assembly, the switch being configured to alternate the handle assembly between at least two modes of operation, wherein the switch extends through two sides of the handle assembly.

2. The surgical instrument of claim 1, wherein the modes of operation include at least one selected from a group consisting of a firing mode, a clamping mode, and a retraction mode.

3. The surgical instrument of claim 1, further comprising an actuation member, wherein the handle assembly is operably connected to the actuation member and is configured to move the actuation member relative to the first jaw member to effectuate sequential ejection of the fasteners through an actuation stroke.

4. The surgical instrument of claim 1, wherein the handle assembly includes a first and second pawl, the first pawl being pivotable about a proximal section and the second pawl being pivotable about a distal section.

5. The surgical instrument of claim 1, wherein the handle assembly includes a rack member having a first and a second set of teeth arranged or disposed in a diametrically opposed relation.

6. The surgical instrument of claim 1, further comprising an articulation mechanism configured to pivot the distal portion of the elongate body about the longitudinal axis.

7. The surgical instrument of claim 6, wherein the articulation mechanism includes a motor.

8. The surgical instrument of claim 6, further comprising a power supply.

9. A surgical instrument comprising:

a handle assembly including a handle;

an elongate body extending distally from the handle assembly and defining a longitudinal axis, the elongate body having a distal portion;

a first jaw member supported by the elongate body and containing a plurality of fasteners;

an second jaw member mounted adjacent the first jaw member, the second jaw member being configured to move in relation to the first jaw member between an open position and a closed position upon actuation of the handle assembly; and

a switch operatively connected to the handle assembly, the switch being configured to alternate the handle assembly between at least two modes of operation, wherein the switch is adapted to move a slider cam.

10. The surgical instrument of claim 9, wherein the modes of operation include at least one selected from a group consisting of a firing mode, a clamping mode, and a retraction mode.

11. The surgical instrument of claim 9, further comprising an actuation member, wherein the handle assembly is operably connected to the actuation member and is configured to move the actuation member relative to the first jaw member to effectuate sequential ejection of the fasteners through an actuation stroke.

12. The surgical instrument of claim 9, wherein the handle assembly includes a first and second pawl, the first pawl being pivotable about a proximal section and the second pawl being pivotable about a distal section.

13. The surgical instrument of claim 9, wherein the handle assembly includes a rack member having a first and a second set of teeth arranged or disposed in a diametrically opposed relation.

14. The surgical instrument of claim 9, further comprising an articulation mechanism configured to pivot the distal portion of the elongate body about the longitudinal axis.

15. The surgical instrument of claim 14, wherein the articulation mechanism includes a motor.

16. The surgical instrument of claim 14, further comprising a power supply.

17. The surgical instrument of claim 9, wherein the slider cam is movable between a firing position and a return position.

18. The surgical instrument of claim 17, wherein in the firing position, the slider cam is disposed between an engagement finger of a return pawl and a toothed rack and wherein in the return position, the slider cam is disposed between an engagement finger of an advancement pawl and another toothed rack.