Bipolar forceps

• US 8,262,655 B2
• Filed: 11/21/2007
• Issued: 09/11/2012
• Est. Priority Date: 11/21/2007
• Status: Active Grant

• Current Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Original Assignee: Ethicon Endo-Surgery, Inc. (Johnson & Johnson)
• Inventors: Ghabrial, Ragae M., Vakharia, Omar J.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): VAHDAT, KHADIJEH A
• Application Number:
  US11/986,420
• Publication Number:
  US 20090131933A1
• Time in Patent Office: 1,756 Days
• Field of Search: 606 46- 52, 606205-207, 607101-102, 198/898, 128/898
• 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

Abstract

A bipolar forceps including a first electrode, a second electrode, and a conductor operably connected to an electrical source, wherein the conductor can be selectively placed in electrical communication with the first electrode when the first electrode is moved between open and closed positions. The conductor can include a contact end which is not in contact with the first electrode when the first electrode is in its open position. In such an open position, the first electrode may not be in electrical communication with the electrical source and, as a result, current may not flow through the first electrode. The first electrode can be moved into its closed position such that the first electrode is in contact with the contact end of the wire. In such a closed position, the first electrode may be in electrical communication with the electrical source allowing current to flow through the first electrode.

Claims

1. A surgical instrument, comprising:

a housing;

a jaw movably connected to said housing, wherein said jaw is selectively pivotable between;

an open position;

a closed position; and

a range of positions between said open position and said closed position, and wherein said jaw includes an electrode comprising;

a tissue-contacting portion; and

an engaging portion; and

a conductor comprising a contact portion, wherein said engaging portion of said electrode moves relative to said contact portion as said jaw pivots between said open position and said closed position, wherein said engaging portion mates with said contact portion when said jaw has pivoted to said closed position, wherein said conductor is in electrical communication with said electrode when said jaw is in said closed position, and wherein said conductor is not in electrical communication with said electrode when said jaw is pivoting within said range of positions as said engaging portion of said electrode is not in contact with said contact portion of said conductor.

2. The surgical instrument of claim 1, wherein said jaw comprises a first jaw, wherein said surgical instrument further comprises a second jaw movably connected to said housing, wherein said second jaw is selectively pivotable between an open position and a closed position, and wherein said first jaw and said second jaw are configured to clamp tissue therebetween when said first jaw and said second jaw are in said closed positions.

3. The surgical instrument of claim 2, wherein said housing further comprises a pivot pin, and wherein said first jaw and said second jaw are pivotably connected to said housing by said pivot pin.

4. The surgical instrument of claim 2, further comprising an actuator, wherein said first jaw and said second jaw are operably engaged with said actuator such that, when said actuator is moved relative to said housing, said first jaw and said second jaw are pivoted between said open and closed positions.

5. The surgical instrument of claim 2, further comprising a second conductor, wherein said second jaw includes a second electrode, wherein said second conductor is in electrical communication with said second electrode when said second jaw is in said closed position, and wherein said second conductor is not in electrical communication with said second electrode when said second jaw is pivoting between said open position and said closed position.

6. The surgical instrument of claim 5, further comprising a switch, wherein said switch is selectively operable to place at least one of said first conductor and said second conductor in electrical communication with an electric current source.

7. The surgical instrument of claim 1, wherein said contact portion of said conductor includes a contact end, and wherein said engaging portion of said electrode is configured to contact said contact end when said jaw is in said closed position.

8. The surgical instrument of claim 7, wherein said engaging portion of said electrode further includes a receptacle configured to receive said contact end.

9. The surgical instrument of claim 1, further comprising a flexible shaft, wherein said jaw extends from said flexible shaft, and wherein said jaw is configured to be inserted through a working channel of an endoscope.

10. A method for processing an instrument for surgery, the method comprising:

obtaining the surgical instrument of claim 1;

sterilizing the surgical instrument; and

storing the surgical instrument in a sterile container.

11. The surgical instrument of claim 1, wherein said conductor comprises a stationary contact portion supported by said housing as said jaw pivots between said open position and said closed position.

12. A surgical instrument, comprising:

a hand piece;

a shaft;

a grasping device, comprising;

a first jaw including a first electrode;

a second jaw including a second electrode, wherein said second jaw is selectively pivotable between;

an open position;

a closed position; and

a range of positions between said open position and said closed position;

a first conductor; and

a second conductor, wherein said second electrode is in electrical communication with said second conductor when said second jaw is in said closed position, and wherein said second electrode is not in electrical communication with said second conductor when said second jaw is pivoting within said range of positions.

13. The surgical instrument of claim 12, wherein said first jaw is selectively pivotable between:

an open first jaw position;

a closed first jaw position; and

a range of first jaw positions between said open first jaw position and said closed first jaw position, wherein said first conductor is in electrical communication with said first electrode when said first jaw is in said closed first jaw position, and wherein said first conductor is not in electrical communication with said first electrode when said first jaw is pivoting within said range of first jaw positions.

14. The surgical instrument of claim 13, wherein said grasping device comprises a housing, wherein said first jaw pivots relative to said housing, wherein said first conductor comprises a stationary contact portion that is supported by said housing as said first jaw pivots between said open position and said closed position.

15. The surgical instrument of claim 12, wherein said second conductor includes a contact end, and wherein said second electrode is configured to contact said contact end when said second jaw is in said closed position.

16. The surgical instrument of claim 12, further comprising an actuator, wherein said grasping device further comprises a pivot pin, wherein said first jaw and said second jaw are pivotably connected to said shaft by said pivot pin, and wherein said first jaw and said second jaw are operably engaged with said actuator such that, when said actuator is moved relative to said shaft, said first jaw and said second jaw are pivoted between said open and closed positions.

17. A method for processing an instrument for surgery, the method comprising:

obtaining the surgical instrument of claim 12;

sterilizing the surgical instrument; and

storing the surgical instrument in a sterile container.

18. The surgical instrument of claim 12, wherein said shaft comprises a flexible shaft, wherein said grasping device extends from said flexible shaft, and wherein said first and second jaws are configured to be inserted through a working channel of an endoscope.

19. The surgical instrument of claim 12, wherein said grasping device comprises a housing, wherein said second jaw pivots relative to said housing, and wherein said second conductor comprises a stationary contact portion that is supported by said housing as said second jaw pivots between said open position and said closed position.

20. A surgical instrument, comprising:

a housing;

a jaw movably connected to said housing, wherein said jaw is selectively pivotable between;

an open position;

a closed position; and

a range of intermediate positions, and wherein said jaw includes an electrode that comprises an engaging portion;

a conductor that comprises a contact portion, wherein said engaging portion of said electrode moves relative to said contact portion as said jaw pivots between said open position and said closed position, and wherein said engaging portion contacts said contact portion when said jaw has pivoted to said closed position; and

connecting means for electrically connecting said conductor and said electrode when said jaw is in said closed position and for electrically disconnecting said conductor and said electrode when said jaw is pivoting within said range of intermediate positions.

21. The surgical instrument of claim 20, wherein said jaw comprises a first jaw, and wherein said surgical instrument further comprises:

a second conductor that comprises a second contact portion;

a second jaw movably connected to said housing, wherein said second jaw is selectively pivotable between;

an open position;

a closed position; and

a range of intermediate positions, and wherein said second jaw includes a second electrode that comprises a second engaging portion, wherein said second engaging portion of said second electrode moves relative to said second contact portion as said second jaw pivots between said open position and said closed position, and wherein said second engaging portion contacts said second contact portion when said second jaw has pivoted to said closed position; and

connecting means for electrically connecting said second conductor and said second electrode when said second jaw is in said closed position and for electrically disconnecting said second conductor and said second electrode when said second jaw is pivoting within said range of intermediate positions.

22. The surgical instrument of claim 21, further comprising:

a pivot pin, wherein said first jaw and said second jaw are pivotably connected to said housing by said pivot pin; and

an actuator, wherein said first jaw and said second jaw are operably engaged with said actuator such that, when said actuator is moved relative to said housing, said first jaw and said second jaw are pivoted between said closed and open positions.

23. A method for processing an instrument for surgery, the method comprising:

obtaining the surgical instrument of claim 20;

sterilizing the surgical instrument; and

storing the surgical instrument in a sterile container.

24. A surgical instrument configured to be used in cooperation with an endoscope, comprising:

a flexible shaft;

a housing extending from said flexible shaft;

a jaw movably connected to said housing, wherein said jaw is selectively pivotable between;

an open position;

a closed position; and

a plurality of intermediate positions, wherein said jaw is configured to be inserted through a working channel of an endoscope, and wherein said jaw includes an electrode; and

a conductor, wherein said conductor is in electrical communication with said electrode when said jaw is in said closed position, and wherein said conductor is not in electrical communication with said electrode when said jaw is pivoting between said plurality of intermediate positions.