Method for selectively elevating and separating tissue layers and surgical instrument for performing the method

Patent metadata

Field	Value
Publication number	US-10603095-B2
Application number	US-201715423092-A
Country	US
Kind code	B2
Filing date	Feb 2, 2017
Priority date	Apr 11, 2005
Publication date	Mar 31, 2020
Grant date	Mar 31, 2020

Abstract

A method for the selective elevation and separation of tissues comprised of multiple layers and a surgical instrument for performing the method. The method may be performed without the requirement of a solid mechanical device insertion or transection through the mucosal layer. In particular, the method and surgical instrument may be used for the selected separation and/or resection of selected portions of benign or malignant tissues (e.g. defining tissue planes, polyp elevation and removal, submucosal tissue tunnelling, endoscopic mucosa resection, etc).

First claim

What is claimed as new and desired to be protected by Letters Patent of the United States is:

1. A surgical method for treating tissue with a surgical instrument, the method comprising:
introducing a gas through a first channel in the surgical instrument;
introducing a liquid through a second channel in the surgical instrument under a mucosal layer in a needleless fashion to lift the mucosa off the Muscularis propria; and
coagulating the mucosal layer using a high frequency electrode of the surgical instrument to transform the gas to a plasma.

2. The surgical method of claim 1 , further comprising feeding the high frequency electrode through the first channel.

3. The surgical method of claim 1 , wherein the step of introducing a gas comprises introducing a rarefied gas.

4. The surgical method of claim 3 , wherein the step of introducing a rarefied gas comprises introducing an argon gas.

5. The surgical method of claim 1 , wherein the step of introducing a liquid comprises introducing an NaCl solution.

6. The surgical method of claim 1 , wherein the step of introducing a liquid comprises forcing a liquid from a supply contain through the second channel.

7. The surgical method of claim 6 , wherein the step of forcing a liquid is performed by a pump.

8. The surgical method of claim 1 , where the step of coagulating the tissue is an argon plasma coagulation.

Assignees

• Erbe Elektromedizin

Inventors

• Fischer Klaus
• Maurice Dan
• Day John
• Enderle Markus

Classifications

• A61B18/042 Primary

  using additional gas becoming plasma · CPC title

• A61B2018/00589

  Coagulation · CPC title

• A61B2018/1407

  Loop · CPC title

• A61B17/32056

  Surgical snare instruments (for removing or smashing calculi A61B2017/2212; tonsillotomes A61B17/26) · CPC title

• A61B17/3478

  Endoscopic needles, e.g. for infusion (biopsy needles A61B10/0233; catheters with injection needles A61M25/0067) · CPC title