SURGICAL STAPLING AND CUTTING APPARATUS, CLAMP MECHANISMS, SYSTEMS AND METHODS

• US 20140339286A1
• Filed: 05/15/2014
• Published: 11/20/2014
• Est. Priority Date: 05/15/2013
• Status: Active Grant

• Current Assignee: Touchstone International Medical Science Co. Ltd
• Original Assignee: Cardica Incorporated
• Inventors: Donohoe, Brendan M., Knodel, Bryan D., Motooka, Cara C. H.
• Granted Patent: US 9,700,319 B2
• Time in Patent Office: Days
• US Class Current: 227/175.2
• CPC Class Codes: A61B 17/07207 the staples being applied sequentially
• CPC Class Codes: A61B 2017/00393 with means for switching between functions
• CPC Class Codes: A61B 2017/2923 Toothed members, e.g. rack and pinion

Abstract

A surgical stapling device is configured for use in open and/or laparoscopic surgical procedures. The device includes a handle assembly, a shaft assembly coupled to the handle assembly, and an end-effector coupled to the shaft assembly. The end-effector comprises of a jaw assembly configured to clamp, staple, and/or cut a target tissue. The handle assembly comprises of a trigger element that can activate a drive assembly to advance a clamp drive assembly to clamp the aforementioned target tissue. The clamp drive assembly comprises of a clamp slide member to either advance the clamp drive assembly in a first direction or retreat the clamp drive assembly in a second direction. The clamp drive assembly is movably coupled to a clamp driver member. Movement of the clamp driver member operates clamping operations of a jaw assembly of the surgical stapling device.

Claims

1. A surgical stapling device, comprising:

a handle assembly;

a shaft assembly coupled to the handle assembly; and

an end-effector coupled to the shaft assembly,

wherein the end-effector comprises;

a jaw assembly configured to perform clamping operations,

wherein the handle assembly comprises;

a trigger member to activate a clamp drive assembly to drive a clamp assembly to cause said jaw assembly to perform clamping operations,

wherein the clamp assembly comprises;

a clamp slide member to either advance said clamp assembly in a first direction or retreat said clamp assembly in a second direction, and

a clamp driver member movably coupled to the clamp assembly, wherein movement of the clamp driver causes the jaw assembly to clamp or un-clamp.

2. The surgical stapling device of claim 1, further comprising:

a clamp lock member to lock the clamp slide member in a first clamp lock pocket feature and a second clamp lock pocket feature to lock the clamp driver member to place the jaw assembly in a clamp lock mode.

3. The surgical stapling device of claim 2, wherein when the clamp assembly moves or translates independently of the clamp driver, the clamp driver is prevented to place the jaw assembly in a clamp lock mode.

4. The surgical stapling device of claim 1, further comprising:

a clamp lock ramp feature on the clamp lock member to provide a positive resistance to the clamp slide member prior to locking the clamp slide member in the first clamp lock pocket feature to place the jaw assembly in the clamp lock mode.

5. The surgical stapling device of claim 1, further comprising:

a mode switch member to selectively place the surgical stapling device in a clamping mode to operate the clamp drive assembly.

6. The surgical stapling device of claim 2, further comprising:

a reset switch member configured to activate a swing arm member to reset the clamp lock member to release the clamp slide member from the first clamp lock pocket feature and release the clamp driver member from the second clamp lock pocket feature to reset the jaw assembly from the clamp lock mode.

7. The surgical stapling device of claim 6, wherein the swing arm member includes an unclamp tab element to engage and reset the clamp lock member.

8. A surgical stapling device, comprising:

a mode switch member to selectively place the surgical stapling device in a clamping mode to operate a clamp drive assembly,

wherein the clamp drive assembly configured to drive a clamp assembly to operate the surgical stapling device,

wherein the clamp assembly comprises;

a clamp slide member to either advance said clamp assembly in a first direction or retreat said clamp assembly in a second direction, and

a clamp driver member movably coupled to the clamp assembly, wherein movement of the clamp driver causes a jaw assembly of the surgical stapling device to clamp or un-clamp.

9. The surgical stapling device of claim 8, wherein movement of the clamp driver being caused by movement of the clamp assembly.

10. A method of treating tissue with a surgical stapling device, comprising:

setting a mode switch member to select a clamp drive assembly to place the surgical stapling device in a clamp mode;

activating a trigger member to drive said clamp drive assembly;

advancing a clamp slide member of a clamp assembly;

causing displacement or movement of a clamp driver member;

placing the clamp assembly in a first clamp lock feature of a clamp lock member; and

placing the clamp driver member in a second clamp lock feature of the clamp lock member to set the surgical stapling device in a clamp mode.

11. The method of treating tissue of claim 10, further comprising:

activating a reset switch member;

causing a swing arm member to engage and reset the clam lock member;

releasing the clamp assembly from the first clamp lock feature of the clamp lock member;

releasing the clamp driver member from the second clamp lock feature of the clamp lock member; and

releasing the surgical stapling device from the clamp mode.