Electrosurgical electrode shroud

• US 6,986,768 B2
• Filed: 02/04/2003
• Issued: 01/17/2006
• Est. Priority Date: 12/15/2000
• Status: Expired due to Term

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Sherwood Services AG
• Inventors: Allen, Charles, Startor, Joe Don
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US10/358,450
• Publication Number:
  US 20040153055A1
• Time in Patent Office: 1,078 Days
• Field of Search: 606/41, 606/42, 606/45, 606/49
• US Class Current: 606/41
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 18/1402 Probes for open surgery
• CPC Class Codes: A61B 18/1477 Needle-like probes
• CPC Class Codes: A61B 2018/00178 Electrical connectors
• CPC Class Codes: A61B 2018/00738 Depth, e.g. depth of ablation
• CPC Class Codes: A61B 2018/1425 Needle
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself
• CPC Class Codes: A61B 2090/062 penetration depth

Abstract

An electrosurgical electrode shroud including a hollow substantially cylindrical member having a first end portion and a second end portion; the first end portion defining an opening which is configured and dimensioned to receive an electrosurgical electrode assembly therein; the second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of an electrosurgical instrument, wherein at least the second end portion is formed of a substantially translucent material. The electrosurgical electrode shroud may further include visual or tactile indicator on the second end portion for indicating a depth of penetration of the electrosurgical instrument within the second end portion when viewed by the surgeon through the translucent material.

Claims

1. An electrosurgical electrode shroud comprising:

a hollow substantially cylindrical member having a first end portion and a second end portion;

said first end portion defining an opening which is configured and dimensioned to receive an electrosurgical electrode assembly therein;

said second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of an electrosurgical instrument, wherein at least said second end portion is formed of a substantially translucent material; and

wherein said second end portion further includes an indicator for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

2. The electrosurgical electrode shroud as recited in claim 1 wherein an inside diameter of the opening defined by the first end portion is configured to fit an outside diameter of the electrosurgical electrode assembly received therein.

3. The electrosurgical electrode shroud as recited in claim 1 further comprising a transition portion between said first end portion and said second end portion.

4. The electrosurgical electrode shroud as recited in claim 3 wherein said transition portion is frustoconical in shape.

5. The electrosurgical electrode shroud as recited in claim 1 wherein the indicator is a visual indicator on said second end portion for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

6. The electrosurgical electrode shroud as recited in claim 1 wherein the indicator is a tactile indicator on said second end portion for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

7. The electrosurgical electrode shroud as recited in claim 1 wherein an inside diameter of the opening defined by the second end portion is substantially equal to an outside diameter of the electrosurgical instrument received therein.

8. The electrosurgical electrode shroud as recited in claim 1 wherein the shroud is formed of an elastomeric material.

9. The electrosurgical electrode shroud as recited in claim 1 wherein the translucent material is substantially clear.

10. The electrosurgical electrode shroud as recited in claim 1 wherein the translucent material is tinted.

11. In an electrosurgical electrode assembly having an elongate electrically-conductive shaft member with a proximal end for receiving electrosurgical currents from an electrosurgical instrument and a distal end, wherein the improvement comprises:

an electrosurgical electrode shroud comprising a hollow substantially cylindrical member having a first end portion and a second end portion;

said first end portion defining an opening which is configured and dimensioned to positively receive the electrosurgical electrode assembly therein;

said second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of the electrosurgical instrument, wherein said second end portion is formed of a substantially translucent material; and

wherein said second end portion further includes an indicator for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

12. The electrosurgical electrode assembly as recited in claim 11 further comprising at least one layer of insulating material formed on said electrically-conductive shaft.

13. The electrosurgical electrode assembly as recited in claim 12 further comprising a second layer of insulating material formed on said electrically-conductive shaft and at least partially covering said at least one layer of insulating material, wherein said second layer of insulating material includes a substantially conical shaped portion to prevent over insertion of the shaft member into a source of electrosurgical currents.

14. The electrosurgical electrode assembly as recited in claim 11 wherein said distal end includes a needle-shaped tip portion capable of penetrating the skin of a patient and exposed electrically for applying electrosurgical currents when said shaft member is connected to a source of electrosurgical currents.

15. The electrosurgical electrode as recited in claim 11 wherein the electrode shroud is co-axial with a longitudinal axis of said shaft member.

16. The electrosurgical electrode as recited in claim 11 wherein said distal end is spade-shaped.

17. An electrosurgical electrode shroud comprising:

a hollow member having a first end portion and a second end portion, said first end portion defining an opening which is configured and dimensioned to receive an electrosurgical electrode assembly therein, said second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of an electrosurgical instrument, wherein at least said second end portion is formed of a substantially translucent material; and

wherein said second end portion further includes an indicator for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

18. The electrosurgical electrode shroud as recited in claim 17 wherein at least a portion of the hollow member has a shape which is at least one of cylindrical and frusto-conical.

19. The electrosurgical electrode shroud as recited in claim 18 comprising a transition portion between said first end portion and said second end portion.

20. The electrosurgical electrode shroud as recited in claim 19 wherein said transition portion has a shape which is at least one of cylindrical and frusto-conical.

21. The electrosurgical electrode shroud as recited in claim 20 wherein the shroud is formed of an elastomeric material.

22. In an electrosurgical electrode assembly having an elongate electrically-conductive shaft member with a proximal end for receiving electrosurgical currents from an electrosurgical instrument and a distal end, wherein the improvement comprises:

an electrosurgical electrode shroud including a hollow member having a first end portion and a second end portion, said first end portion defining an opening which is configured and dimensioned to positively receive the electrosurgical electrode assembly therein, said second end portion defining an opening which is configured and dimensioned to receive an electrode mounting portion of the electrosurgical instrument, wherein said second end portion is formed of a substantially translucent material; and

wherein said second end portion further includes an indicator for indicating a depth of penetration of the electrosurgical instrument within said second end portion.

23. The electrosurgical electrode assembly as recited in claim 22 wherein at least a portion of the hollow member has a shape which is at least one of cylindrical and frusto-conical.

24. The electrosurgical electrode assembly as recited in claim 23 further comprising at least one layer of insulating material formed on said electrically conductive shaft.

25. The electrosurgical electrode assembly as recited in claim 24 further comprising a second layer of insulating material formed on said electrically-conductive shaft and at least partially covering said at least one layer of insulating material, wherein said second layer of insulating material includes a shaped portion to prevent over insertion of the shaft member into a source of electrosurgical currents.