Surgical stapling device with firing indicator

Patent metadata

Field	Value
Publication number	US-10542985-B2
Application number	US-201415531844-A
Country	US
Kind code	B2
Filing date	Dec 17, 2014
Priority date	Dec 17, 2014
Publication date	Jan 28, 2020
Grant date	Jan 28, 2020

Abstract

A surgical stapling device ( 10 ) having an indicator mechanism that is movable between first, second and third positions. The first position of the indicator ( 26 ) indicates to a clinician that the jaws of the surgical stapling device ( 10 ) have yet to be approximated. The second position of the indicator ( 26 ) indicates to a clinician that the jaws of the surgical stapling device ( 10 ) are approximated. The third position of the indicator ( 26 ) indicates to a clinician that the surgical stapling device ( 10 ) has been fired and is depleted of staples.

First claim

What is claimed is:

1. A surgical stapling device comprising:
a handle assembly including a housing defining a window, a firing trigger supported on the housing, and an indicator mechanism, the firing trigger being actuable to fire the stapling device;
a body extending distally from the handle assembly;
a shell assembly supported on a distal end of the body;
an approximation assembly extending from the handle assembly through the body, the approximation assembly including an approximation knob supported on the handle assembly; and
an anvil assembly supported on a distal end of the approximation assembly, wherein the approximation assembly is actuable to move the anvil from an unapproximated position spaced from the shell assembly to an approximated position adjacent the shell assembly;
wherein the indicator mechanism includes:
an indicator pivotally supported within the housing adjacent the window;
a slide plate operably associated with the indicator, the slide plate being movable within the housing to move the indicator from a first position to a second position in response to movement of the anvil assembly from the unapproximated position to the approximated position; and
an indicator link positioned within the housing, the indicator link being operably associated with the indicator and being movable in response to actuation of the firing trigger to move the indicator from the second position to a third position, wherein in the third position, the indicator provides an indication that the surgical stapling device has been fired.

2. The surgical stapling device of claim 1 , wherein the firing trigger is pivotally supported on the housing.

3. The surgical stapling device of claim 2 , further including a firing link having a first end pivotally connected to the firing trigger and a second end pivotally connected to the housing.

4. The surgical stapling device of claim 3 , wherein the firing link includes a lateral extension, the lateral extension being positioned to engage the indicator link to move the indicator link within the housing to effect movement of the indicator from the second position to the third position.

5. The surgical stapling device of claim 4 , wherein the indicator link is slidable within a slot defined along an inner wall of the housing.

6. The surgical stapling device of claim 5 , wherein the indicator link includes a central body portion, an upper portion and a lower portion, wherein the lower portion is positioned to engage the lateral extension of the firing link and the upper portion is positioned to engage the indicator.

7. The surgical stapling device of claim 6 , wherein the indicator includes an abutment surface, the abutment surface being positioned to engage the upper portion of the indicator link.

8. The surgical stapling device of claim 1 , wherein the slide member includes a cylindrical connector and the indicator includes at least one elongated recess, the cylindrical connector being received within the at least one elongated recess to connect the slide member to the indicator.

9. The surgical stapling device of claim 8 , wherein the cylindrical connector is formed on an upturned lip portion of the slide member.

10. The surgical stapling device of claim 1 , wherein the indicator includes a body having a top surface including indicia, the indicia being provided to identify each of the three positions of the indicator.

11. The surgical stapling device of claim 10 , wherein the indicia includes three different colors positioned on the top surface of the top surface of the body of the indicator.

12. The surgical stapling device of claim 10 , further including a lens cover defining a slot, the lens cover being positioned over the indicator such that the indicia is visible through the slot.

13. The surgical stapling device of claim 1 , further including a biasing member, the biasing member being positioned to urge the slide member to a position to maintain the indicator in the first position.

14. The surgical stapling device of claim 13 , wherein the biasing member is positioned about the proximal extension of the body of the slide member and is compressed between the housing of the handle assembly and the body of the slide member.

15. The surgical stapling device of claim 1 , wherein the slide member includes a body portion defining an elongated slot, an upturned lip portion supporting a connector, and a proximal extension.

16. The surgical stapling device of claim 15 , wherein the approximation mechanism includes a drive screw supporting a screw stop, the screw stop including a protrusion positioned within the elongated slot of the slide member, wherein movement of the drive screw to move the anvil assembly to the approximated position effects movement of the protrusion through the elongated slot into contact with the slide member, wherein contact of the protrusion with the slide member effects movement of the slide member to pivot the indicator from the first position to the second position.

Assignees

• Covidien Lp

Inventors

• Zhan Hui
• Zhou Junyu
• Zhou Shengwang

Classifications

• A61B2090/0811

  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 title

• A61B17/07207 Primary

  the staples being applied sequentially · CPC title

• A61B17/1155 Primary

  Circular staplers comprising a plurality of staples · CPC title

• A61B2017/07278

  characterised by its sled or its staple holder · CPC title

• A61B2017/07257

  characterised by its anvil · CPC title