Surgical stapling device

• US 20080041917A1
• Filed: 08/20/2007
• Published: 02/21/2008
• Est. Priority Date: 06/17/2003
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Tyco Healthcare Group LP (Medtronic Plc)
• Inventors: Roy, Philip, Olson, Lee, Stearns, Ralph, Beardsley, John, Racenet, David
• Granted Patent: US 7,597,230 B2
• Time in Patent Office: Days
• US Class Current: 227/176.1
• CPC Class Codes: A61B 17/0644 penetrating the tissue, deformable to closed position
• 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 17/105 Wound clamp magazines for packaging sharps A61B50/3001
• CPC Class Codes: A61B 2017/0688 Packages or dispensers for surgical staplers
• CPC Class Codes: A61B 2017/07214 Stapler heads
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter
• CPC Class Codes: A61B 2017/291 the position of the handle being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2923 Toothed members, e.g. rack and pinion
• CPC Class Codes: A61B 2017/2927 the angular position of the head being adjustable with respect to the shaft
• CPC Class Codes: A61B 2017/2931 with releasable head
• CPC Class Codes: A61B 2017/320052 Guides for cutting instruments by marking A61B2090/395
• CPC Class Codes: A61B 2090/0811 for the position of a particular part of an instrument with respect to the rest of the instrument, e.g. position of the anvil of a stapling instrument
• CPC Class Codes: A61B 34/71 Manipulators operated by drive cable mechanisms

Abstract

A surgical device is disclosed which includes a handle portion, a central body portion and a SULU. The SULU includes a proximal body portion, an intermediate pivot member and a tool assembly. The intermediate pivot member is pivotally secured to the proximal body portion about a first pivot axis and the tool assembly is pivotally secured to the intermediate pivot member about a second pivot axis which is orthogonal to the first pivot axis. The SULU includes a plurality of articulation links which are operably connected to the tool assembly by non-rigid links. The articulation links are adapted to releasably engage articulation links positioned in the central body portion. The body portion articulation links are connected to an articulation actuator which is supported for omni-directional movement to effect articulation of the tool assembly about the first and second axes. The handle portion includes a spindle and barrel assembly drive mechanism for advancing and retracting a drive member positioned in the tool assembly. In one embodiment, the tool assembly includes a cartridge assembly having a plurality of staples and an anvil assembly.

Claims

1. A surgical stapling device, comprising:

a handle portion including a drive mechanism slidably positioned in the handle portion, the drive mechanism being configured and dimensioned to selectively engage a firing rack and a retraction rack;

an elongated body portion extending distally from the handle portion;

a pivot member connected to the elongated body portion; and

a tool assembly pivotably connected to the pivot member.

2. The surgical stapling device of claim 1, wherein the tool assembly includes an anvil assembly and a cartridge assembly.

3. The surgical stapling device of claim 1, further comprising a spindle.

4. The surgical stapling device of claim 3, wherein the spindle includes at least one guide track that is configured and dimensioned to slidably receive the firing rack and the retraction rack.

5. The surgical stapling device of claim 3, wherein the spindle has a pinion for engaging gear teeth on the firing rack and the retraction rack.

6. The surgical stapling device of claim 1, wherein the drive mechanism includes a firing pawl, a retraction pawl, and a grasper pawl.

7. The surgical stapling device of claim 6, wherein the firing rack includes a set of gear teeth being engagable with the firing pawl.

8. The surgical stapling device of claim 7, wherein the firing pawl is urged into operative engagement with the firing rack by a biasing member.

9. The surgical stapling device of claim 6, wherein the retraction rack includes a set of gear teeth being engagable with the retraction pawl.

10. The surgical stapling device of claim 9, wherein the retraction pawl is urged into operative engagement with the retraction rack by a biasing member.

11. The surgical stapling device of claim 3, further including an indicator ring positioned about the spindle, the indicator ring being secured to and movable with the retraction rack.

12. The surgical stapling device of claim 11, wherein the handle portion further includes a window such that the indicator ring is viewable therethrough.

13. The surgical stapling device of claim 12, wherein the indicator ring is colored to facilitate viewing through the window of the handle portion.

14. The surgical stapling device of claim 12, wherein the window is a transparent portion of the handle portion.