Multi-layer anti-stick coating for surgical tools

Patent metadata

Field	Value
Publication number	US-2025107841-A1
Application number	US-202418896233-A
Country	US
Kind code	A1
Filing date	Sep 25, 2024
Priority date	Sep 28, 2023
Publication date	Apr 3, 2025
Grant date	—

Abstract

Various exemplary devices, systems, and methods for multi-layer anti-stick coatings for surgical tools are provided. In general, a method of manufacturing a surgical tool includes forming, using plasma enhanced chemical vapor deposition with hexamethyldisiloxane as a precursor material, a first coating on a conductive tissue treating surface of the end effector and a second jaw component of the end effector, the first coating comprising a first material, wherein the first material is a first silicone material, and applying a second coating on top of the first coating on the first jaw component and the second jaw component, the second coating comprising a second material, wherein the coatings are effective to prevent tissue sticking to the jaws during an electrosurgical sealing procedure.

First claim

What is claimed is:

1 . A method of manufacturing a surgical tool, the method comprising:
forming, using plasma enhanced chemical vapor deposition with a precursor material, a first coating on a conductive tissue treating surface of a component of an end effector of the surgical tool, the first coating comprising a first material, wherein the first material is a first silicone material; and applying a second coating on top of the first coating on the conductive tissue treating surface, the second coating comprising a second material, wherein the first coating and the second coating form a multi-layer coating that is effective to prevent tissue sticking to the conductive tissue treating surface during an electrosurgical sealing procedure.

2 . The method of claim 1 , wherein the precursor used for plasma enhanced chemical vapor deposition is hexamethyldisiloxane.

3 . The method of claim 1 , wherein the first silicone material is a polydimethylsiloxane-like material.

4 . The method of claim 1 , wherein the first silicone material comprises polydimethylsiloxane.

5 . The method of claim 1 , wherein the second material comprises a phospholipid material.

6 . The method of claim 1 , wherein the second material comprises a second silicone material different from the first silicone material.

7 . The method of claim 6 , wherein the second silicone material comprises an amino-functional silicone.

8 . The method of claim 1 , wherein applying the second coating comprises wiping the second material onto the conductive tissue treating surface.

9 . The method of claim 1 , wherein applying the second coating comprises spraying the second material onto the conductive tissue treating surface.

10 . The method of claim 1 , wherein applying the second coating comprises brushing the second material onto the conductive tissue treating surface.

11 . The method of claim 1 , wherein applying the second coating comprises dipping the conductive tissue treating surface into the second material.

12 . The method of claim 1 , wherein the component is a first jaw component of the end effector.

13 . The method of claim 12 , further comprising, after forming the first coating and prior to applying the second coating, assembling the end effector using the first jaw component and a second jaw component.

14 . The method of claim 12 , further comprising, after applying the second coating, assembling the end effector using the first jaw component and a second jaw component.

15 . The method of claim 1 , wherein the first coating has a thickness of approximately 7 to 17 nm or 220 to 300 nm.

16 . The method of claim 15 , wherein the first coating has a thickness of approximately 7 to 17 nm.

17 . The method of claim 15 , wherein the first coating has a thickness of approximately 220 to 300 nm.

18 . The method of claim 1 , wherein the second coating has a thickness of 300 nm to 5 μm.

19 . The method of claim 1 , wherein the second coating has a thickness of 0.1-1 μm over approximately 50-95% of the sealing surface area to which the second coating has been applied, and a thickness of greater than 7 μm over less than 5% of the sealing surface area to which the second coating has been applied.

20 . An end effector of an electrosurgical device, the end effector comprising:
a first jaw component having a conductive first tissue treating surface; a second jaw component operatively coupled to the first jaw component, the second jaw component having a conductive second tissue treating surface; a first coating on the conductive first tissue treating surface and the conductive second tissue treating surface, the first coating comprising a first material that is a first silicone material; and a second coating layered on top of the first coating, the second coating comprising a second material.

Assignees

• Cilag Gmbh Int

Inventors

• Wang Luling
• Trees Gregory A
• Otrembiak Candice
• Sarley John Michael

Classifications

• A61B2018/0063

  Sealing · CPC title

• A61B2018/00136

  with polymer · CPC title

• A61B2018/00077

  high, i.e. electrically conducting · CPC title

• A61B2018/0013

  non-sticking · CPC title

• A61B18/1445 Primary

  at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod · CPC title