Open vessel sealing forceps disposable handswitch

• US 7,641,653 B2
• Filed: 05/04/2006
• Issued: 01/05/2010
• Est. Priority Date: 05/04/2006
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Kingsley, Dylan, Dalla Betta, Casey D., Walters, Brady C., Bumgarner, J. Cody, Twomey, John R., Garrison, David M., Hushka, Dylan
• Primary Examiner(s): PEFFLEY, MICHAEL F
• Application Number:
  US11/417,375
• Publication Number:
  US 20070260241A1
• Time in Patent Office: 1,342 Days
• Field of Search: 606 32- 35, 606/41, 606/42, 606 48- 52, 200293-295
• US Class Current: 606/51
• CPC Class Codes: A61B 18/1442 Probes having pivoting end effectors, e.g. forceps
• CPC Class Codes: A61B 2017/2945 Curved jaws
• 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 2018/1432 curved
• CPC Class Codes: A61B 2018/1495 Electrodes being detachable from a support structure
• CPC Class Codes: A61B 2090/034 abutting on parts of the device itself

Abstract

A removable handswitch and electrode assembly for use with a forceps having opposing end effectors and a handle for effecting relative movement of the end effectors with respect to one another includes a housing having at least one portion which removably engages at least a portion of a mechanical forceps and a handswitch assembly disposed on the housing. A pair of electrodes is included which removably engage a distal end of the mechanical forceps such that the electrodes reside in opposing relation to one another. At least one electrode is adapted to connect to an electrosurgical generator through the handswitch assembly. At least one stop member is operatively associated with the electrodes and controls the distance between the opposing electrodes to affect a tissue seal.

Claims

1. A removable handswitch assembly comprising:

a housing having at least one portion adapted to removably engage at least a portion of a mechanical forceps;

a handswitch disposed on said housing, said handswitch adapted to connect to an electrosurgical generator and including;

a backer plate; and

a flexible circuit board configured to wrap around the backer plate and electrically connect to the electrosurgical generator;

a pair of electrodes removably engageable with a distal end of said mechanical forceps such that said electrodes reside in opposing relation to one another, at least one electrode being adapted to connect to the electrosurgical generator through the flexible circuit board of said handswitch; and

at least one stop member operatively associated with at least one of said electrodes which controls the distance between said opposing electrodes.

2. A removable handswitch assembly according to claim 1 wherein said stop member is proximal to said electrodes.

3. A removable handswitch assembly according to claim 1 wherein said handswitch includes at least one activation button disposed on one side of said housing.

4. A removable handswitch assembly according to claim 1 wherein said handswitch includes two activation buttons disposed on said housing.

5. A removable handswitch assembly according to claim 4 wherein each of said activation buttons operatively cooperate with the flexible circuit board to control activation of said electrodes.

6. A removable handswitch assembly according to claim 1 wherein said handswitch includes at least one dome switch disposed within said housing which operatively connects to the flexible circuit board to control the activation of said electrodes.

7. A removable handswitch assembly according to claim 6 wherein said backer plate supports said at least one dome switch within said housing.

8. A removable handswitch assembly according to claim 7 wherein said backer plate includes at least one mechanical interface which secures said dome switch thereto.

9. A removable handswitch assembly according to claim 6 wherein said flexible circuit board includes at least one resistor which controls current though said handswitch.

10. A removable handswitch assembly according to claim 1 wherein said handswitch includes two dome switches disposed within said housing which operatively connect to the flexible circuit board to control the activation of said electrodes.

11. A removable handswitch assembly according to claim 10 wherein said housing includes two housing halves which matingly engage one another to form said housing and said flexible circuit board is dimensioned to span between said two housing halves prior to assembly.

12. A removable handswitch assembly according to claim 11 wherein said handswitch includes one backer plate operatively associated with each housing half which supports one of said two dome switches within said housing and said flexible circuit board is configured to wrap around both of said backer plates within said housing at assembly.

13. A removable handswitch assembly comprising:

a housing having at least one portion adapted to removably engage at least a portion of a mechanical forceps; and

a handswitch disposed on said housing adapted to connect to an electrosurgical generator, said handswitch including;

a backer plate; and

a flexible circuit board configured to wrap around the backer plate and having at least one portion thereof which operatively communicates with at least one activation button to control the activation of a pair of electrodes, said electrodes being removably engageable with a distal end of said mechanical forceps such that said electrodes reside in opposing relation to one another.

14. A removable handswitch assembly according to claim 13 wherein said activation button includes a rocker pivot at one end thereof which allows the activation button to pivot into operative communication with said flexible circuit board,

15. A removable handswitch assembly according to claim 13 wherein said activation button is affixed to one side of said housing.

16. A removable handswitch assembly according to claim 15 wherein said activation button includes a guidance tab at one end thereof which facilitates alignment and assembly of said activation button atop said flexible circuit board and within said housing.

17. A removable handswitch assembly according to claim 13 wherein said flexible circuit board includes two dome switches disposed on either side of said housing which operatively communicate with two corresponding activation buttons to independently control activation of said electrodes.

18. A removable handswitch assembly according to claim 17 wherein said housing includes two housing halves which matingly engage one another to form said housing and said flexible circuit board is dimensioned to span between said two housing halves prior to assembly.

19. A removable handswitch assembly according to claim 18 wherein said backer plate operatively couples to each housing half which supports one of said two dome switches within said housing.

20. A removable handswitch assembly comprising:

a housing having at least one portion adapted to removably engage at least a portion of a mechanical forceps; and

a pair of electrodes removably engageable with a distal end of said mechanical forceps such that said electrodes reside in opposing relation to one another, at least one electrode being adapted to connect to an electrosurgical generator through a handswitch, said handswitch including;

a backer plate; and

a flexible circuit board configured to wrap around the backer plate and having at least one portion thereof which operatively communicates with an activation button to control the activation of said pair of electrodes, said activation button disposed in a recess defined in a side of said housing.