Forceps with two-part drive bar

Patent metadata

Field	Value
Publication number	US-12220142-B2
Application number	US-202318483855-A
Country	US
Kind code	B2
Filing date	Oct 10, 2023
Priority date	Mar 29, 2019
Publication date	Feb 11, 2025
Grant date	Feb 11, 2025

Abstract

A forceps having a first jaw and a second jaw, where at least one of the first and second jaws is capable of moving between an open position and a closed position. The forceps including an inner shaft located within an outer shaft and extending along the longitudinal axis, and a drive bar coupled to and extending distally from the inner shaft. The drive bar including a pair of drive bar struts extending from a distal portion of the inner shaft and positioned laterally inward of at least one of first and second set of flanges of the first and second jaws. A drive pin is securable to the pair of drive bar struts and the drive bar is translatable within the outer shaft to translate the drive pin to move the first jaw and/or the second jaw between open and closed positions.

First claim

What is claimed is:

1. A surgical forceps comprising:
a pivot pin;
an outer shaft extending along a longitudinal axis;
an inner shaft extending along the longitudinal axis and located at least partially within the outer shaft;
a first jaw pivotably connected to the outer shaft by the pivot pin;
a second jaw connected to the outer shaft;
a blade located at least partially within the inner shaft and the outer shaft, the blade defining a blade channel; and
a drive assembly comprising:
a first drive strut and a second drive strut each connected to the inner shaft, the first drive strut and the second drive strut located laterally outward of opposing sides of the blade to at least partially define a blade path for the blade, the first drive strut including a strut projection extending at least partially into the blade channel; and
a drive pin extending at least partially through the first jaw, the drive pin connected to the first drive strut and the second drive strut, the drive pin drivable by the first drive strut and the second drive strut to operate the first jaw.

2. The surgical forceps of claim 1 , wherein the blade is translatable along the longitudinal axis along the blade path between the first drive strut and the second drive strut.

3. The surgical forceps of claim 2 , wherein movement of the blade in a direction other than along the longitudinal axis is limited by contact between the strut projection and the blade channel.

4. The surgical forceps of claim 1 , wherein the second drive strut includes a second strut projection extending at least partially into the blade channel.

5. The surgical forceps of claim 4 , wherein the second strut projection extends toward the first drive strut and wherein the strut projection extends toward the second drive strut.

6. The surgical forceps of claim 5 , wherein the first drive strut and the second drive strut have matching dimensions and are installed in configurations rotated 180 degrees from each other.

7. The surgical forceps of claim 5 , wherein the first drive strut includes a first axial track and the second drive strut includes a second axial track, the first axial track and the second axial track together configured to receive a guide at least partially therein, the guide secured to the outer shaft, and the guide engageable with one or more of the first axial track and the second axial track to limit movement of the first drive strut and the second drive strut with respect to the outer shaft.

8. The surgical forceps of claim 7 , wherein the strut projection extends at least partially into the second axial track.

9. The surgical forceps of claim 8 , wherein the second strut projection extends at least partially into the first axial track.

10. The surgical forceps of claim 1 , wherein the first jaw includes a first pair of flanges and the second jaw includes a second pair of flanges, the drive pin extending at least partially through the first pair of flanges and the second pair of flanges.

11. A surgical forceps comprising:
an outer shaft extending along a longitudinal axis;
an inner shaft extending along the longitudinal axis and located at least partially within the outer shaft;
a first jaw and a second jaw each connected to the outer shaft;
a blade located at least partially within the inner shaft and the outer shaft, the blade defining a blade channel extending at least partially through the blade; and
a drive assembly comprising:
a first drive strut connected to a first slot of the inner shaft, the first drive strut located laterally outward of the blade, the first drive strut including a strut projection extending at least partially into the blade channel;
a second drive strut connected to a second slot of the inner shaft, the second drive strut located laterally outward of the blade opposite the first drive strut to, together with the first drive strut, at least partially define a blade path for the blade; and
a drive pin connected to one or more of the first drive strut and the second drive strut, the drive pin configured to operate one or more of the first jaw and the second jaw.

12. The surgical forceps of claim 11 , wherein the first drive strut includes a first extension and the second drive strut includes a second extension, the first extension and the second extension located at least partially within the first slot and the second slot of the inner shaft, respectively, to connect the first drive strut and the second drive strut to the inner shaft.

13. The surgical forceps of claim 12 , wherein the inner shaft includes a tab at least partially defining the first slot and the second slot, the tab configured to deflect to receive the first extension and the second extension into the first slot and the second slot, respectively.

14. The surgical forceps of claim 11 , wherein the blade is translatable along the longitudinal axis along the blade path between the first drive strut and the second drive strut.

15. The surgical forceps of claim 14 , wherein movement of the blade in a direction other than along the longitudinal axis is limited by contact between the strut projection and the blade channel.

16. The surgical forceps of claim 11 , wherein the second drive strut includes a second strut projection extending at least partially into the blade channel.

17. The surgical forceps of claim 16 , wherein the second strut projection extends toward the first drive strut and wherein the strut projection extends toward the second drive strut.

18. The surgical forceps of claim 17 , wherein the first drive strut includes a first axial track and the second drive strut includes a second axial track, the first axial track and the second axial track together configured to receive a guide at least partially therein, the guide secured to the outer shaft, and the guide engageable with one or more of the first axial track and the second axial track to limit movement of the first drive strut and the second drive strut with respect to the outer shaft.

19. The surgical forceps of claim 18 , wherein the strut projection extends at least partially into the second axial track and the second strut projection extends at least partially into the first axial track.

20. The surgical forceps of claim 11 , wherein the first jaw includes a first pair of flanges and the second jaw includes a second pair of flanges, the drive pin extending at least partially through the first pair of flanges and the second pair of flanges.

Assignees

• Gyrus Acmi Inc

Inventors

• Holton Jeffrey D
• Blus Theodore C
• Kroll Mark J
• Mensch John

Classifications

• A61B2017/2916

  pins in guiding slots · CPC title

• A61B2017/2913

  cams or guiding means · CPC title

• A61B17/295 Primary

  combined with cutting implements · CPC title

• A61B18/14

  Probes or electrodes therefor · CPC title

• A61B2017/2912

  transmission of forces to actuating rod or piston · CPC title