ACTIVE WEDGE AND I-BEAM FOR SURGICAL STAPLER

• US 20130233908A1
• Filed: 04/25/2013
• Published: 09/12/2013
• Est. Priority Date: 04/19/2011
• Status: Active Grant

• Current Assignee: Touchstone International Medical Science Co. Ltd
• Original Assignee: Cardica Incorporated
• Inventors: Knodel, Bryan D., Manoux, Philipe R., Donohoe, Brendan M.
• Granted Patent: US 9,655,615 B2
• Time in Patent Office: Days
• US Class Current: 227/177.1
• 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 2017/07228 Arrangement of the staples
• CPC Class Codes: A61B 2017/07271 characterised by its cartridge
• CPC Class Codes: A61B 2017/07278 characterised by its sled or its staple holder
• CPC Class Codes: A61B 2017/07285 characterised by its cutter

Abstract

A surgical stapling device designed and constructed for cutting and stapling tissues in a surgical procedure. The surgical stapling device includes an actuated wedge to deploy staples. The actuated wedge is put into an active state by a first wedge actuation element. In the active state, the actuated wedge is ready to engage and deploy staples in a staple holder. The actuated wedge is put into a neutral state by a second wedge actuation element. In the neutral state, the actuated wedge disengages with the staples and does not deploy the staples. The surgical stapling device includes an I-beam that acts to maintain a clamp gap between the anvil and staple holder of the surgical stapling device to ensure proper stapling of tissue.

Claims

1. A surgical stapling device, comprising:

an actuated wedge element to deploy staples;

a first wedge actuation element to place the actuated wedge element into an active position to engage staples for deployment; and

a second wedge actuation element to place the actuated wedge element in a neutral position to disengage contact with staples and to reset the actuated wedge element.

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

a trigger element to cause advancing of unused staples into deployment position for next engagement and deployment of staples by the actuated wedge element,

wherein advancing unused staples into deployment position causes said unused staples to pass-over the actuated wedge element in the neutral position, whereas the actuated wedge element in the active position prevents the unused staples from being advanced into their deployment position.

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

an I-beam member coupled to a wedge base member of the actuated wedge element to engage an anvil member of the surgical stapling device,

wherein the wedge base member being movably couple to a staple holder member of the surgical stapling device,

wherein the I-beam member acts to maintain a clamp gap between the anvil member and the staple holder member of the surgical stapling device to ensure consist stapling of tissue.

4. The surgical stapling device of claim 3, wherein the I-beam member includes a substantially shape edge, wherein the shape edge acts to cut tissue as the surgical stapling device is actuated.

5. A surgical stapling device, comprising:

an anvil member;

a staple holder member movably coupled to the anvil member; and

an I-beam member movably coupled to the staple holder member,

wherein the I-beam member is advanced to engage the anvil member to maintain a clamp gap between the anvil member and the staple holder member when the surgical stapling device is actuated to deploy staples.

6. The surgical stapling device of claim 5, wherein the I-beam member is advanced along a path length in the anvil member to maintain the clamp gap throughout a deployment length of staples being deployed.

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

an actuated wedge element to deploy staples;

a first wedge actuation element to place the actuated wedge element into an active position to engage staples for deployment; and

a second wedge actuation element to place the actuated wedge element in a neutral position to disengage contact with staples and to reset the actuated wedge element.

8. The surgical stapling device of claim 7, further comprising;

a trigger element to cause advancing of unused staples into deployment position for next engagement and deployment of staples by the actuated wedge element,

wherein advancing unused staples into deployment position causes said unused staples to pass-over the actuated wedge element in the neutral position, whereas the actuated wedge element in the active position prevents the unused staples from being advanced into their deployment position.