Multi-contact forceps and method of sealing, coagulating, cauterizing and/or cutting vessels and tissue

• US 6,152,923 A
• Filed: 04/28/1999
• Issued: 11/28/2000
• Est. Priority Date: 04/28/1999
• Status: Expired due to Term

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Sherwood Services AG
• Inventors: Ryan, Thomas
• Primary Examiner(s): Dvorak, Linda C. M.
• Assistant Examiner(s): GIBSON, ROY DEAN
• Application Number:
  US09/301,270
• Time in Patent Office: 580 Days
• Field of Search: 606/41, 606/45, 606/48-52, 606/42
• US Class Current: 606/51
• CPC Class Codes: A61B 18/1445 at the distal end of a shaft, e.g. forceps or scissors at the end of a rigid rod
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00601 Cutting
• CPC Class Codes: A61B 2018/00654 with individual control of each of a plurality of energy emitting elements
• CPC Class Codes: A61B 2018/126 bipolar

Abstract

A bipolar forceps for sealing, cauterizing, coagulating and/or cutting vessels and vascular tissue at multiple sites includes a pair of multi-pronged jaw members pivotally attached in opposing relation relative to one another and selectively movable from an open position wherein the jaw members are disposed in spaced relation relative to one another to a second clamping position wherein the jaw members cooperate to grasp tissue therebetween. The forceps also includes at least one electrode disposed on the inner facing surface of each prong of the jaw members and a switch for selectively controlling electrosurgical energy to each electrode. The electrodes on each of the jaw members can be activated simultaneously, sequentially, or in a multiplexed fashion. The disclosure also relates to a method of sealing, cauterizing, coagulating and/or cutting vessels and vascular tissue at multiple sites without manipulation of the forceps.

Claims

1. A bipolar forceps, comprising:

a pair of jaw members operatively mounted in opposing relation relative to one another, said jaw members being selectively movable from a first open position wherein said jaw members are disposed in spaced relation relative to one another to a second clamping position wherein said jaw members are disposed in a close juxtaposed relation;

each of said jaw members having a plurality of distally extending prongs thereon;

at least one electrode disposed on an inner facing surface of at least two prongs of one of said jaw members and at least one electrode disposed on an inner facing surface of at least one prong of the other of said jaw members; and

a switch for selectively controlling electrosurgical energy to at least two electrodes disposed on one of said jaw members and one electrode disposed on the other of said jaw members.

2. A bipolar forceps according to claim 1 wherein said electrodes on said first and second jaw members are arranged in opposing pairs.

3. A bipolar forceps according to claim 1 wherein the inner facing surfaces of at least one electrode pair has a complimentary cross-section.

4. A bipolar forceps according to claim 3 wherein the inner facing surfaces of at least one electrode pair has a V-shaped cross-section.

5. A bipolar forceps according to claim 3 wherein the inner facing surfaces of at least one electrode pair has a notched cross-section.

6. A bipolar forceps according to claim 3 wherein the inner facing surfaces of at least one electrode pair has a rounded cross-section.

7. A bipolar forceps according to claim 1 wherein said first and second jaw members are bifurcated.

8. A bipolar forceps according to claim 1 wherein said first and second jaw members are trifurcated.

9. A method of applying electrosurgical energy to tissue, comprising the steps of:

a) providing a bipolar forceps having;

a pair of jaw members operatively mounted in opposing relation relative to one another, said jaw members being selectively movable from a first open position wherein said jaw members are disposed in spaced relation relative to one another to a second clamping position wherein said jaw members are disposed in a close juxtaposed relation;

each of said jaw members having a plurality of distally extending prongs thereon;

at least one electrode disposed on an inner facing surface of at least two prongs of one of said jaw members and at least one electrode disposed on an inner facing surface of at least one prong of the other of said jaw members; and

a switch for selectively controlling electrosurgical energy to at least two electrodes disposed on one of said jaw members and one electrode disposed on the other of said jaw members;

b) grasping tissue between said jaw members;

c) selectively activating a first electrode on one of said prongs of said first jaw member; and

d) selectively activating a second electrode on one of said prongs of said second jaw member such that electrosurgical energy is transferred from the first jaw member, through the tissue and to the second jaw member.

10. A method according to claim 9 further comprising the steps of:

a) selectively activating additional electrodes on additional prongs of said first and second jaw members to treat tissue at multiple sites without manipulation of the forceps.

11. A method according to claim 10 wherein said first and second electrodes and said additional electrodes of said activating steps are multiplexed.

12. A method according to claim 9 wherein said electrodes of said providing step are generally aligned on said inner facing surfaces of said jaw members in opposing pairs.

13. A method according to claim 10 wherein said first and second electrodes and said additional electrodes of said activating steps are activated sequentially.

14. A method according to claim 10 wherein said first and second electrodes and said additional electrodes of said activating steps are activated simultaneously.

15. A method according to claim 9 wherein said first and second electrodes of said activating steps are off-set relative to one another.

16. A method of sealing vessels, comprising the steps of:

a) providing a bipolar forceps having;

a pair of jaw members operatively mounted in opposing relation relative to one another, each of said jaw members being selectively movable from a first open position wherein said jaw members are disposed in spaced relation relative to one another to a second clamping position wherein said jaw members are disposed in a close juxtaposed relation;

each of said jaw members having a plurality of distally extending prongs thereon;

at least one pair of opposing electrodes disposed on each opposing pair of prongs of said jaw members, and

a switch for selectively controlling electrosurgical energy to each electrode pair;

b) grasping tissue between said jaw members; and

c) selectively activating said electrodes pairs to form a seal between each pair of opposing electrodes without manipulation of the forceps.

17. A method according to claim 16 wherein said jaw members of said providing step are bifurcated.

18. A method according to claim 16 wherein said jaw members of said providing step are trifurcated.