Electrosurgical device with multiple monopolar electrode assembly

• US 10,716,612 B2
• Filed: 12/12/2016
• Issued: 07/21/2020
• Est. Priority Date: 12/18/2015
• Status: Active Grant

• Current Assignee: Medtronic Advanced Energy LLC (Medtronic Plc)
• Original Assignee: Medtronic Advanced Energy LLC (Medtronic Plc)
• Inventors: Patel, Bhavesh, Sylvester, Joseph, Hubelbank, David, Polgar, Stephen, Siopes, William, Patel, Rajan
• Primary Examiner(s): Peffley, Michael F
• Assistant Examiner(s): Zink, Amanda L
• Application Number:
  US15/375,559
• Publication Number:
  US 20170172646A1
• Time in Patent Office: 1,317 Days
• CPC Class Codes: A61B 18/042 using additional gas becoming plasma
• CPC Class Codes: A61B 18/1206 Generators therefor
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 18/16 Indifferent or passive electrodes for grounding
• CPC Class Codes: A61B 2018/00029 open
• CPC Class Codes: A61B 2018/00083 low, i.e. electrically insulating
• CPC Class Codes: A61B 2018/00136 with polymer
• CPC Class Codes: A61B 2018/00154 containing and delivering drugs
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00565 Bone
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00595 Cauterization
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00607 Coagulation and cutting with the same instrument
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/00922 by switching or controlling the treatment energy directly within the hand-piece
• CPC Class Codes: A61B 2018/0094 Types of switches or controllers
• CPC Class Codes: A61B 2018/1253 monopolar
• CPC Class Codes: A61B 2018/1412 Blade

Abstract

An electrosurgical device having a handpiece including a controller and an electrode assembly extending from the handpiece is disclosed. The electrode assembly includes a monopolar blade and a monopolar electrode. The monopolar blade includes a conductive element partially coated with an insulator and electrically coupled to the controller to selectively deliver a monopolar radiofrequency (RF) cutting signal. The monopolar electrode is spaced apart and electrically isolated from the monopolar blade. The monopolar electrode includes an exposed major conductive surface electrically coupled to the controller to selectively deliver a monopolar RF hemostatic sealing signal with a dispersed fluid.

Claims

1. An electrosurgical device suitable for coupling to an electrosurgical unit, the electrosurgical device comprising:

a handpiece having a controller, the controller to receive a monopolar radiofrequency (RF) cutting signal and a monopolar RF hemostatic sealing signal from the electrosurgical unit, the controller to provide selective activation of the monopolar RF cutting signal and the monopolar RF hemostatic sealing signal in the electrosurgical device; and

an electrode assembly extending from the handpiece, comprising;

a monopolar blade having a conductive element partially coated with an insulator, the monopolar blade electrically coupled to the controller to receive the monopolar RF cutting signal from the controller; and

a monopolar electrode spaced apart and electrically isolated from the monopolar blade, the monopolar electrode having an exposed major conductive surface, the monopolar electrode electrically coupled to the controller to receive the monopolar RF hemostatic sealing signal from the controller with a dispersed fluid.

2. The electrosurgical device of claim 1 wherein the controller is configured to selectively deliver a monopolar RF coagulation signal to the monopolar blade.

3. The electrosurgical device of claim 1 wherein the controller includes a first button to selectively deliver the RF cutting signal and a second button to selectively deliver the RF hemostatic sealing signal.

4. The electrosurgical device of claim 1 where in the monopolar electrode includes a fluid port to disperse the fluid.

5. The electrosurgical device of claim 4 wherein the major conductive surface includes the fluid port to disperse the fluid.

6. The electrosurgical device of claim 4 comprising a hypotube having a tube in fluid communication with the fluid port configured to deliver the fluid and a conductive element in electrical communication with the controller and the monopolar electrode configured to deliver the monopolar RF hemostatic sealing signal.

7. The electrosurgical device of claim 6 wherein the tube forms a lumen and the conductive element is disposed within the lumen.

8. The electrosurgical device of claim 6 wherein the conductive element is a wire.

9. The electrosurgical device of claim 6 wherein the hypotube includes an extendable and yieldably collapsible coil segment.

10. The electrosurgical device of claim 1 wherein the electrode assembly extends from the handpiece via a shaft.

11. The electrosurgical device of claim 10 wherein the shaft is generally rigid and of a fixed length.

12. The electrosurgical device of claim 1 wherein the exposed major conductive surface is included in a plurality of exposed major conductive surfaces.

13. The electrosurgical device of claim 12 wherein the plurality of exposed major conductive surfaces are on opposites sides of the electrode assembly.

14. The electrosurgical device of claim 13 wherein the each of the major conductive surfaces include a fluid port to simultaneously deliver the fluid.

15. The electrosurgical device of claim 1 wherein the controller provides a selected order of electrical connections.

16. The electrosurgical device of claim 15 wherein the controller includes a pushbutton to electrically couple the monopolar blade to the monopolar electrode before electrically coupling the monopolar RF hemostatic sealing signal to the monopolar electrode.

17. An electrosurgical device suitable for coupling to an electrosurgical unit, the electrosurgical device comprising:

a handpiece having a controller, the controller to receive a monopolar radiofrequency (RF) cutting signal and a monopolar RF hemostatic sealing signal from the electrosurgical unit, the controller having a first setting to provide activation of the monopolar RF cutting signal and a second setting to provide activation of the monopolar RF hemostatic sealing signal in the electrosurgical device; and

an electrode assembly extending from the handpiece, the electrode assembly configured to deliver the monopolar RF cutting signal and the monopolar RF hemostatic sealing signal, the electrode assembly comprising,

an insulative intermediate component having a major surface and an edge,

a monopolar blade disposed on the edge of the intermediate component, the monopolar blade electrically coupled to the controller to receive the monopolar RF cutting signal from the controller, and

a monopolar electrode attached to the major surface of the intermediate component, the monopolar electrode electrically coupled to the controller to receive the monopolar RF hemostatic sealing signal from the controller with a dispersed fluid.

18. The electrosurgical device of claim 17 wherein the intermediate component includes a polymer.

19. The electrosurgical device of claim 17 wherein the monopolar blade includes a tapered cutting edge.

20. The electrosurgical device of claim 19 wherein the monopolar blade includes a conductive element partially covered with an electrically insulative coating.

21. The electrosurgical device of claim 20 wherein the electrically insulative coating is glass or ceramic.

22. The electrosurgical device of claim 17 wherein the monopolar electrode includes a fluid port to disperse the fluid.

23. The electrosurgical device of claim 22 comprising a conductive hypotube in fluid communication with the fluid port.

24. The electrosurgical device of claim 23 wherein the conductive hypotube is electrically coupled to the monopolar electrode and configured to deliver the monopolar RF hemostatic sealing signal to the monopolar electrode.

25. The electrosurgical device of claim 24 wherein the conductive hypotube includes a nonconductive wall portion in fluid communication with the fluid port and a conductive element in electrical communication with the monopolar electrode to deliver the monopolar RF hemostatic sealing signal to the monopolar electrode.

26. The electrosurgical device of claim 25 wherein the conductive element is a wire.

27. The electrosurgical device of claim 25 wherein the wall portion forms a lumen and the conductive element is disposed within the lumen.

28. The electrosurgical device of claim 25 wherein the hypotube includes an extendable and yieldably collapsible coil segment.

29. The electrosurgical device of claim 17 wherein the intermediate component electrically isolates the monopolar blade from the monopolar electrode.

30. An electrosurgical device suitable for coupling to an electrosurgical unit, the electrosurgical device comprising:

a handpiece having a controller, the controller to receive a monopolar radiofrequency (RF) cutting signal and a monopolar RF hemostatic sealing signal from the electrosurgical unit, the controller to provide activation of the monopolar RF cutting signal and the monopolar RF hemostatic sealing signal in the electrosurgical device;

a shaft extending from the handpiece, the shaft including a hypotube configured to deliver a fluid, the hypotube having a conductive element; and

an electrode assembly extending from the shaft, comprising;

a monopolar blade having a conductive element partially coated with an insulator, the monopolar blade electrically coupled to the controller to receive the monopolar RF cutting signal from the controller; and

a monopolar electrode spaced apart and electrically isolated from the monopolar blade, the monopolar electrode having an exposed major conductive surface, the monopolar electrode electrically coupled to the controller via the conductive element to receive the monopolar RF hemostatic sealing signal from the controller with a dispersed fluid via the hypotube.

31. The electrosurgical device of claim 30 wherein the hypotube includes a nonconductive wall portion in fluid communication with a fluid port on the major conductive surface.

32. The electrosurgical device of claim 31 wherein the conductive element is a wire.

33. The electrosurgical device of claim 32 wherein the wall portion forms a lumen and the conductive element is disposed within the lumen.

34. The electrosurgical device of claim 33 wherein the hypotube includes an extendable and yieldably collapsible coil segment.

35. The electrosurgical device of claim 30 wherein the shaft is generally rigid and of a fixed length.