Electrosurgical device and method of use

Patent metadata

Field	Value
Publication number	US-2026083493-A1
Application number	US-202519331558-A
Country	US
Kind code	A1
Filing date	Sep 17, 2025
Priority date	Sep 24, 2024
Publication date	Mar 26, 2026
Grant date	—

Abstract

Bipolar electrosurgical devices and methods of use for cutting, ablating, or coagulating tissue, for example, in endoscopic gynecology procedures.

First claim

What is claimed is:

1 . An electrosurgical device for ablating tissue, comprising:
a probe having a handle coupled to an elongate shaft with a working end; an RF source operatively coupled to a controller; a source of a conductive fluid communicating with a jetting channel having a jetting outlet in an electrically insulative component of the working end; a pump mechanism operatively coupled to the controller configured to provide a conductive fluid flow at a flow rate from 5 ml/min to 25 ml/min in the jetting channel; a first polarity electrode exposed to the conductive fluid flow proximal to the jetting outlet; a second polarity electrode at the working end spaced apart from the jetting outlet; and wherein the RF source and controller are adapted to couple RF current to the conductive fluid flow in the jetting channel to generate a plasma at the jetting outlet.

2 . The electrosurgical device of claim 1 wherein the jetting channel has a mean cross-section ranging from 0.05 mm to 0.5 mm.

3 . The electrosurgical device of claim 1 wherein the jetting channel has a length ranging from 1 mm to 10 mm.

4 . The electrosurgical device of claim 1 further comprising a negative pressure source operatively coupled to the controller, the negative pressure source communicating with an aspiration channel in the elongate shaft.

5 . The electrosurgical device of claim 4 wherein the aspiration channel extends to an aspiration window in the working end.

6 . The electrosurgical device of claim 4 wherein the negative pressure source is operatively coupled to the controller.

7 . The electrosurgical device of claim 1 wherein the source of a conductive fluid is carried in the handle.

8 . The electrosurgical device of claim 1 wherein the source of a conductive fluid is remote from the handle.

9 . The electrosurgical device of claim 1 wherein the pump mechanism is carried in the handle.

10 . The electrosurgical device of claim 1 wherein the pump mechanism is remote from the handle.

11 . The electrosurgical device of claim 1 wherein the pump mechanism comprises a first pump remote from the handle and a second booster pump in the handle.

12 . The electrosurgical device of claim 1 wherein the jetting channel has a mean cross section ranging from 0.05 mm to 0.5 mm.

13 . The electrosurgical device of claim 1 wherein the elongate shaft is configured for articulation.

14 . The electrosurgical device of claim 1 wherein the elongate shaft is detachable from an aspiration sleeve.

Assignees

• Meditrina Inc

Inventors

• Truckai Csaba
• Shadduck John H

Classifications

• A61B2018/00083

  low, i.e. electrically insulating · CPC title

• A61B2018/00166

  Multiple lumina · CPC title

• A61B2018/0091

  Handpieces of the surgical instrument or device · CPC title

• A61B2218/007

  Aspiration · CPC title

• A61B2018/00077

  high, i.e. electrically conducting · CPC title