Apparatus, system, and method for performing an electrosurgical procedure

• US 9,113,898 B2
• Filed: 09/09/2011
• Issued: 08/25/2015
• Est. Priority Date: 10/09/2008
• Status: Active Grant

• Current Assignee: Covidien LP (Medtronic Plc)
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Chojin, Edward M.
• Primary Examiner(s): Sirmons, Kevin C
• Assistant Examiner(s): CARPENTER, WILLIAM R
• Application Number:
  US13/228,640
• Publication Number:
  US 20120004658A1
• Time in Patent Office: 1,446 Days
• Field of Search: 604/49, 604/50, 604/51, 604/52, 604/205, 604/206, 604/207, 604/208, 604/209
• US Class Current: 1/1
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2018/00345 Vascular system
• CPC Class Codes: A61B 2018/00404 Blood vessels other than those in or around the heart
• CPC Class Codes: A61B 2018/00619 Welding
• CPC Class Codes: A61B 2018/0063 Sealing
• CPC Class Codes: A61B 2018/126 bipolar
• CPC Class Codes: A61B 2018/1412 Blade
• CPC Class Codes: A61B 2018/1455 having a moving blade for cutting tissue grasped by the jaws
• CPC Class Codes: A61B 2018/1861 with an instrument inserted into a body lumen or cavity, e.g. a catheter

Abstract

A bipolar forceps includes a housing having a shaft extending therefrom including an end effector assembly at a distal end thereof. The end effector assembly has a wheel assembly opposing a jaw member and having a pair of opposing wheels configured to facilitate movement of the wheel assembly relative to the jaw member. A drive rod is operably coupled at a proximal end to a movable handle and at a distal end to the wheel assembly. The movable handle is movable relative to a stationary handle to move the wheel assembly relative to the jaw member. At least one electrically conductive tissue sealing plate is disposed on each of the wheel assembly and the jaw member and is adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue held between the wheel assembly and the jaw member to effect a tissue seal.

Claims

1. A bipolar forceps, comprising:

a housing having a shaft extending therefrom defining a longitudinal axis;

an end effector assembly disposed at a distal end of the shaft including a wheel assembly disposed in opposed relation to a jaw member, the wheel assembly having a pair of opposing wheels configured to move along the longitudinal axis relative to the opposing jaw member; and

a first electrically conductive tissue sealing surface disposed on the jaw member and at least one second electrically conductive tissue sealing surface disposed on at least one of the opposing wheels of the wheel assembly, each of the electrically conductive tissue sealing surfaces adapted to connect to an electrosurgical energy source configured to deliver electrosurgical energy to tissue disposed between the jaw member and the pair of opposing wheels.

2. A bipolar forceps according to claim 1, further comprising:

a drive rod operably coupled at a proximal end to an actuation mechanism and at a distal end to the wheel assembly, wherein movement of the actuation mechanism relative to the housing moves the pair of opposing wheels along the longitudinal axis relative to the jaw member.

3. A bipolar forceps according to claim 1, wherein the electrosurgical energy source is adapted to deliver a first electrical potential to the first electrically conductive tissue sealing surface and a second electrical potential to the at least one second electrically conductive tissue sealing surface.

4. A bipolar forceps according to claim 1, wherein the end effector assembly is configured to selectively conduct energy through tissue disposed between the jaw member and the pair of opposing wheels when the pair of opposing wheels are disposed in a predetermined position along the longitudinal axis.

5. A bipolar forceps according to claim 1, further comprising:

a drive rod operably coupled at a proximal end to an actuation mechanism and at a distal end to the wheel assembly, the actuation mechanism movable relative to the housing to cause movement of the drive rod along the longitudinal axis such that the pair of opposing wheels rotate about a rotation pin and move along the longitudinal axis relative to the jaw member.

6. A bipolar forceps according to claim 1, further comprising:

a rotating assembly for rotating the end effector assembly about the longitudinal axis.

7. A bipolar forceps according to claim 1, further comprising:

a knife actuatable along the longitudinal axis and configured to cut tissue disposed between the wheel assembly and the jaw member.

8. A bipolar forceps according to claim 7, wherein the jaw member includes a longitudinal knife channel disposed therein and configured to receive the knife therethrough.

9. A bipolar forceps according to claim 8, wherein the opposing wheels of the wheel assembly are disposed on opposing sides of the longitudinal knife channel.

10. A bipolar forceps, comprising:

a housing having a shaft extending therefrom and defining a longitudinal axis;

an end effector assembly disposed at a distal end of the shaft and including a pair of opposing circular electrically conductive tissue sealing surfaces rotatable about a rotation pin and movable along the longitudinal axis relative to a stationary electrically conductive tissue sealing surface; and

an actuation mechanism operably coupled to the rotation pin and configured to move the pair of opposing circular electrically conductive tissue sealing surfaces along the longitudinal axis relative to the stationary electrically conductive tissue sealing surface, each of the electrically conductive tissue sealing surfaces adapted to connect to an electrosurgical energy source and configured to deliver electrosurgical energy to tissue disposed between the circular electrically conductive tissue sealing surfaces and the stationary electrically conductive tissue sealing surface.

11. The bipolar forceps of claim 10 further comprising:

a drive rod operably coupled at a proximal end to the actuation mechanism and at a distal end to the rotation pin, the actuation mechanism movable relative to the housing to cause movement of the drive rod along the longitudinal axis such that the pair of opposing circular electrically conductive tissue sealing surfaces rotate about the rotation pin and move along the longitudinal axis relative to the stationary electrically conductive tissue sealing surface.

12. A bipolar forceps according to claim 10, wherein the electrosurgical energy source is adapted to deliver a first electrical potential to the pair of opposing circular electrically conductive tissue sealing surfaces and a second electrical potential to the stationary electrically conductive tissue sealing surface.

13. A bipolar forceps according to claim 10, wherein the end effector assembly is configured to conduct energy through tissue held between the pair of opposing circular electrically conductive tissue sealing surfaces and the stationary electrically conductive tissue sealing surface when the pair of opposing circular electrically conductive tissue sealing surfaces is in a predetermined position along the longitudinal axis.

14. A bipolar forceps according to claim 10, further comprising:

a knife actuatable along the longitudinal axis and configured to cut tissue disposed between the pair of opposing circular electrically conductive tissue sealing surfaces and the stationary electrically conductive tissue sealing surface.

15. A bipolar forceps according to claim 14, wherein the stationary electrically conductive tissue sealing surface includes a longitudinal knife channel disposed therein and configured to receive the knife therethrough.

16. A bipolar forceps according to claim 15, wherein the circular electrically conductive tissue sealing surfaces are disposed on opposing sides of the longitudinal knife channel.