Electrosurgical devices and systems

Patent metadata

Field	Value
Publication number	US-2025195122-A1
Application number	US-202318844260-A
Country	US
Kind code	A1
Filing date	Mar 22, 2023
Priority date	Mar 25, 2022
Publication date	Jun 19, 2025
Grant date	—

Abstract

A probe for an electrosurgical device for treating tissue, the probe optionally including any one or combination of: an elongated shaft having a. proximal end, a distal end, and a longitudinal axis; a first electrode selectively extending from the distal end of the shaft; a second electrode extending from the distal end of the shaft, wherein the second electrode is spaced, from the first electrode; and an apron positioned at the distal end, wherein the apron is positioned between the first electrode and the tissue, and wherein the apron is positioned between the second electrode and the tissue.

First claim

1 . A probe for an electrosurgical device for treating tissue, the probe comprising:
an elongated shaft having a proximal end, a distal end, and a longitudinal axis; a first electrode selectively extending from the distal end of the shaft; and a second electrode selectively extending from the distal end of the shaft, wherein the second electrode is spaced from the first electrode.

2 .- 6 . (canceled)

7 . The probe of claim 1 , further comprising a plurality of tubes extending along the shaft to the distal end, wherein the first electrode is connected to at least a first of the plurality of tubes and has a channel therein extending to a first port defined by the first electrode, and wherein the second electrode is connected to at least a second of the plurality of tubes and has a channel therein extending to a second port defined by the second electrode.

8 . The probe of claim 1 , wherein at least a first portion of the second electrode is retractable relative to one or both of the first electrode and a second portion of the second electrode.

9 . The probe of claim 8 , wherein the first portion of the second electrode is longitudinally retractable into the shaft.

10 . (canceled)

11 . The probe of claim 8 , wherein retraction of the first portion of the second electrode changes a surface area of the second electrode exposed to the tissue.

12 . The probe of claim 1 , wherein one of the first electrode has a different shape from the second electrode or the first electrode has a substantially identical shape as the second electrode.

13 . The probe of claim 1 , further comprising an illumination device positioned at the distal end of the shaft.

14 .- 16 . (canceled)

17 . The probe of claim 1 , wherein the first electrode and the second electrode have a first configuration relative to one another in an electrosurgical coagulation mode.

18 . The probe of claim 17 , wherein the first electrode and the second electrode have a second configuration relative to one another in an electrosurgical resection mode.

19 . (canceled)

20 . The probe of claim 1 , wherein a first portion of the second electrode is selectively moveable thereby reducing a surface area of the second electrode exposed to the tissue.

21 . The probe of claim 20 , wherein the first portion of the second electrode represents no less than at least 90%, or 80% or 70% of a total surface area of the second electrode.

22 . The probe of claim 21 , wherein a second portion of the second electrode that remains stationary is no less than at least 10%, 20% or 30% of the total surface area of the second electrode.

23 . The probe of claim 22 , wherein a surface area of the first electrode is no more than at least twice as large as a surface area of the second portion of the second electrode.

24 .- 35 . (canceled)

36 . A probe for an electrosurgical device for treating tissue, the probe comprising:
an elongated shaft having a proximal end, a distal end, and a longitudinal axis; a first electrode selectively extending from the distal end of the shaft, the first electrode defining a first inflow port for an irrigating fluid; a second electrode selectively extending from the distal end of the shaft, wherein the second electrode is spaced from the first electrode, and wherein the second electrode defines a second inflow port for the irrigating fluid; and an outflow port positioned between the first electrode and the second electrode and spaced a distance from the first inflow port and the second inflow port, wherein the outflow port is configured to receive the irrigating fluid.

37 . The probe of claim 36 , further comprising a plurality of tubes extending along the shaft to the distal end, wherein the first electrode is connected to at least a first of the plurality of tubes and has a channel therein extending to the first inflow port defined by the first electrode, wherein the second electrode is connected to at least a second of the plurality of tubes and has a channel therein extending to the second inflow port defined by the second electrode, and wherein a third of the plurality of tubes has a channel therein extending to communicate with the outflow port.

38 . The probe of claim 36 , wherein a flow rate of the irrigating fluid through the outflow port is between 1.1 times and 6 times greater than a flow rate of the irrigating fluid through the first inflow port and the second inflow port collectively.

39 . (canceled)

40 . The probe of claim 38 , wherein the flow rate of the irrigating fluid through the outflow port is between 5 ml/min to 600 ml/min, inclusive, and the flow rate of the irrigating fluid through the first inflow port and the second inflow port collectively is between 5 ml/min to 100 ml/min, inclusive.

41 . The probe of claim 36 , wherein a distal most edge of the first inflow port and the second inflow port is between 0.125 inches and 0.335 inches, inclusive, from the outflow port.

42 . The probe of claim 36 , wherein an area of the outflow port is substantially the same as an area of the first inflow port or the second inflow port or can be up to about 2 times as large as the area of the first inflow port or the second inflow port.

43 . The probe of claim 36 , further comprising a boss configured to cover a portion of one of the first electrode or the second electrode, wherein the boss extends distally from the distal end of the elongate shaft.

Assignees

• Relign Corp

Inventors

• Germain Aaron
• Dominguez Ramos Pedro

Classifications

• A61B2218/002

  Irrigation · CPC title

• A61B2018/00744

  Fluid flow · CPC title

• A61B2018/00607

  Coagulation and cutting with the same instrument · CPC title

• A61B2018/00601

  Cutting · CPC title

• A61B2018/00589

  Coagulation · CPC title