Combination monopolar-bipolar electrosurgical instrument system, instrument and cable

• US 6,113,596 A
• Filed: 10/10/1997
• Issued: 09/05/2000
• Est. Priority Date: 12/30/1996
• Status: Expired due to Term

• Current Assignee: Atricure, Inc.
• Original Assignee: Enable Medical Corporation (Atricure, Inc.)
• Inventors: Hooven, Michael D., Richardson, Theodore A.
• Primary Examiner(s): Lateef, Marvin M.
• Assistant Examiner(s): SHAW, SHAWNA JEANNINE
• Application Number:
  US08/948,745
• Time in Patent Office: 1,061 Days
• Field of Search: 606/41, 606/42, 606/45, 606/50, 606/34, 607/2
• US Class Current: 606/42
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2018/00178 Electrical connectors

Abstract

An electrosurgical instrument system including an RF energy source that has two bipolar terminals of opposite polarity and two monopolar terminals, one being active and the other being passive. Switches are provided for selectively energizing the bipolar terminals and the monopolar terminals. The system includes an electrosurgical instrument that has two tissue-contacting members and at least two electrodes. One electrode may be associated with each of the tissue-contacting members, or both electrodes may be associated with one of the tissue-contacting members. Two conductors are provided for connecting the two electrodes to the positive and negative bipolar terminals respectively. A third conductor is provided for connecting either of the electrodes or one of the tissue-contacting members to the active monopolar terminal. The system also includes a patient return electrode pad which is in electrical communication with the pass of monopolar terminal. Consequently, the instrument may be selectively used in the either the monopolar mode or the bipolar mode by engagement of the appropriate switch. In addition, an instrument for use in such a system as disclosed, which comprises any of a variety of bipolar electrosurgical instruments, including scissors, graspers, and forceps. A separate conductor assembly is also disclosed. In a further embodiment, switching circuitry is disclosed that senses bipolar or monopolar current and automatically connects the electrosurgical instrument to contact with the leads for the sensed current.

Claims

1. An adapter system for connecting an electrosurgical instrument having first and second electrodes to an RF electrosurgery energy generator having a bipolar energy source and a monopolar energy source, said adapter system comprising:

a bipolar conductor for connecting to said bipolar energy source;

a monopolar conductor for connecting to said monopolar energy source; and

a controller having a bipolar input for connecting to said bipolar conductor, a monopolar input for connecting to said monopolar conductor, and an output for connecting to the first and/or second electrodes of the electrosurgical instrument, said controller including a switch that is powered by the RF energy received through one of the monopolar and bipolar conductors and being operable to automatically switch said output into communication with selected of said monopolar conductor and bipolar conductor upon detecting activation of said monopolar or bipolar energy sources.

2. The adapter system of claim 1 wherein said bipolar conductor comprises a first bipolar lead for connection to a first bipolar terminal of an RF generator and a second bipolar lead for connection to a second bipolar terminal of an RF generator;

said monopolar conductor comprises a first monopolar lead for connection to a monopolar output terminal of an RF generator; and

said controller being operable to automatically connect said first and second bipolar leads to said output of said controller upon activation of first and second bipolar terminals of the RF generator.

3. The adapter system of claim 2 wherein said controller further connects said first monopolar lead to said output of said controller upon deactivation of first and second bipolar terminals of the RF generator.

4. The adapter system of claim 2 wherein said controller further comprises a switching circuit having a relay to automatically connect said first and second bipolar leads to said output of said controller upon activation of first and second bipolar terminals of the RF generator.

5. The adapter system of claim 4 wherein said controller further connects said first monopolar lead to said output of said controller upon deactivation of first and second bipolar terminals of the RF generator.

6. The adapter system of claim 4 wherein said controller further comprises a resistor across which said first and second bipolar leads are connected, a transformer in parallel with said resistor, and a rectifier in parallel with said transformer, the output of said rectifier actuating said relay to conductively connect said bipolar leads to said output of said controller.

7. The adapter system of claim 1 wherein said bipolar conductor comprises a first bipolar lead for connection to a first bipolar terminal of an RF generator and a second bipolar lead for connection to a second bipolar terminal of an RF generator;

said monopolar conductor comprises a first monopolar lead for connection to a monopolar output terminal of an RF generator and a second monopolar lead for connection to a monopolar return terminal; and

said controller being operable to automatically connect said first monopolar lead to said output of said controller upon activation of the monopolar output terminal of the RF generator.

8. The adapter system of claim 7 wherein said adapter further connects said first and second bipolar leads to said output of said controller upon deactivation of the monopolar output terminal of the RF generator.

9. The adapter system of claim 7 wherein said controller further comprises a switching circuit having a relay to automatically connect said monopolar lead to said output of said controller upon activation of the monopolar output terminal of the RF generator.

10. The adapter system of claim 9 wherein said controller further connects said first and second bipolar leads to said output of said controller upon deactivation of the monopolar output terminal of the RF generator.

11. The adapter system of claim 9 wherein said controller further comprises a resistor connecting said first and second monopolar leads, a transformer in parallel with said resistor, and a rectifier in parallel with said transformer, the output of said rectifier actuating said relay to conductively connect said monopolar leads to said output of said controller.

12. The adapter system of claim 9, 6, or 11 wherein said relay comprises a double pole-double throw relay connected to two common contacts.

13. The adapter system of claim 9, 6, or 11 wherein said controller further comprises a diode connected in parallel with said relay to dissipate current caused by de-energizing said relay.

14. The adaptor system of claim 1 wherein said adaptor is contained within a common housing with the RF electrosurgery energy generator.

15. The adapter system of claim 14 wherein said bipolar conductor comprises a first bipolar lead for connection to a first bipolar output in an RF generator and a second bipolar lead for connection to a second bipolar output in an RF generator;

said monopolar conductor comprises a first monopolar lead for connection to a monopolar output in an RF generator and a second monopolar lead for connection to a monopolar return in an RF generator; and

said controller being operable to automatically connect said first monopolar lead to said output of said controller upon activation of the monopolar output in the RF generator.

16. The adapter system of claim 15 wherein said adapter further connects said first and second bipolar leads to said output of said controller upon deactivation of the monopolar output in the RF generator.

17. The adaptor system of claim 1 wherein said adaptor is separate from a housing for the RF electrosurgery generator.

18. The adapter system of claim 17 wherein said bipolar conductor comprises a first bipolar lead for connection to a first bipolar output in an RF generator and a second bipolar lead for connection to a second bipolar output in an RF generator;

said monopolar conductor comprises a first monopolar lead for connection to a monopolar output in an RF generator; and

said controller being operable to automatically connect said first and second bipolar leads to said output of said controller upon activation of first and second bipolar terminals of the RF generator.

19. The adapter system of claim 18 wherein said adapter further connects said first monopolar lead to said output of said controller upon deactivation of first and second bipolar terminals of the RF generator.

20. The adaptor system of claim 1 wherein said controller disconnects said bipolar conductor from said output before connecting said monopolar conductor to said output.

21. The adapter system of claim 20 wherein said controller further disconnects said monopolar conductor from said output before connecting said bipolar conductor to said output.

22. An electrosurgical instrument system comprising:

an RF energy source including a bipolar energy source, and a monopolar energy source, a switch for energizing said bipolar energy source, and a switch for energizing said monopolar energy source;

an electrosurgical instrument having first and second tissue contacting members, a selected of said first and second tissue contacting members comprising a first electrode, a selected of said first and second tissue contacting members comprising a second electrode; and

an adapter for conductively connecting said first and second electrodes to a selected of said bipolar and monopolar energy sources, said adapter comprising;

a bipolar conductor for connecting to said bipolar energy source;

a monopolar conductor for connecting to said monopolar energy source; and

a controller having a bipolar input for connecting to said bipolar conductor, a monopolar input for connecting to said monopolar conductor, and an output for connecting to the first and/or second electrodes of the electrosurgical instrument, said controller including a switch that is powered by the RF energy received through one of the monopolar and bipolar conductors and being operable to automatically switch said output into communication with selected of said monopolar conductor and bipolar conductor upon detecting activation of said monopolar or bipolar energy source.

23. The electrosurgical instrument system of claim 22 wherein said bipolar energy source comprises a first bipolar terminal and a second bipolar terminal, said monopolar energy source comprises a monopolar output terminal;

said bipolar conductor comprises a first bipolar lead for connecting to said first bipolar terminal and a second bipolar lead for connecting to said second bipolar terminal;

said monopolar conductor comprises a first monopolar lead for connecting to said monopolar output terminal; and

said controller being operable to automatically connect said first and second bipolar leads to said output of said controller upon activation of bipolar energy from the RF generator.

24. The electrosurgical instrument system of claim 23 wherein said controller further connects said first monopolar lead to said output of said controller upon deactivation of bipolar energy from the RF generator.

25. The electrosurgical instrument system of claim 23 wherein said controller further comprises a switching circuit having a relay to automatically connect said first and second bipolar leads to said output of said controller upon activation of bipolar energy from the RF generator.

26. The electrosurgical instrument system of claim 25 wherein said switching circuit further connects said first monopolar lead to said output of said controller upon deactivation of bipolar energy from the RF generator.

27. The electrosurgical instrument system of claim 25 wherein said controller further comprises a resistor across which said first and second bipolar leads are connected, a transformer in parallel with said resistor, and a rectifier in parallel with said transformer, the output of said rectifier actuating said relay to conductively connect said bipolar leads to said output of said controller.

28. The electrosurgical instrument system of claim 22 wherein said bipolar energy source comprises a first bipolar terminal and a second bipolar terminal, said monopolar energy source comprises a monopolar output terminal and a monopolar return terminal;

said bipolar conductor comprises a first bipolar lead for connecting to said first bipolar terminal and a second bipolar lead for connecting to said second bipolar terminal;

said monopolar conductor comprises a first monopolar lead for connecting to said monopolar output terminal and a second monopolar lead for connecting to said monopolar return terminal; and

said controller being operable to automatically connect said first monopolar lead to said output of said controller upon activation of monopolar energy from the RF generator.

29. The electrosurgical instrument system of claim 28 wherein said controller further connects said first and second bipolar leads to said output of said controller upon deactivation of monopolar energy from the RF generator.

30. The electrosurgical instrument system of claim 28 wherein said controller further comprises a switching circuit having a relay to automatically connect said first monopolar lead to said output of said controller upon activation of monopolar energy from the RF generator.

31. The electrosurgical instrument system of claim 30 wherein said switching circuit further connects said first and second bipolar leads to said output of said controller upon deactivation of monopolar energy from the RF generator.

32. The electrosurgical instrument system of claim 30 wherein said controller further comprises a resistor connecting said first and second monopolar leads, a transformer in parallel with said resistor, and a rectifier in parallel with said transformer, the output of said rectifier actuating said relay to conductively connect said monopolar leads to said output of said controller.

33. The electrosurgical instrument system of claim 30, 27, or 32 wherein said relay comprises a double pole, double throw relay connected to two common contacts selected of said first and second bipolar leads or said first monopolar lead.

34. The electrosurgical instrument system of claim 30, 27, or 32 wherein said controller further comprises a diode connected in parallel with said relay to dissipate current caused by de-energizing said relay.

35. The electrosurgical instrument system of claim 22 wherein said electrosurgical energy source includes a monopolar control lead, a conductor connected to said control lead, and a control switch interposed between said conductor and said first monopolar output lead for manually activating monopolar energy.

36. The electrosurgical instrument system of claim 35 wherein said control switch is located on said electrosurgical instrument.

37. The electrosurgical instrument system of claim 35 wherein said control switch is located on a conductive lead connecting said adapter to said electrosurgical instrument.

38. The electrosurgical instrument system of claim 35, 36, or 37 wherein said monopolar control lead comprises a coagulation control lead and said control switch comprises a coagulation control switch for manually activating monopolar coagulation energy.

39. The electrosurgical instrument system of claim 38 wherein said electrosurgical energy source further comprises a monopolar cut control lead, a conductor connected to said cut control lead, and a cut control switch interposed between said cut conductor and said first monopolar output lead for manually activating monopolar cut energy.

40. The electrosurgical instrument system of claim 39 wherein said cut control switch is located on said electrosurgical instrument.

41. The combination of claim 39 or 40 wherein said coagulation control switch and said cut control switch comprise a single three position switch.

42. The combination of claim 41 wherein said three position switch comprises a double pole rocker switch.

43. The electrosurgical instrument system of claim 22 wherein said adaptor is contained within a common housing with said RF energy source.

44. The electrosurgical instrument system of claim 22 wherein said adaptor is separate from a housing for said RF energy source.

45. The electrosurgical instrument system of claim 22 wherein said controller disconnects said bipolar conductor from said output before connecting said monopolar conductor to said output.

46. The electrosurgical instrument system of claim 45 wherein said controller further disconnects said monopolar conductor from said output before connecting said bipolar conductor to said output.