Gas-enhanced surgical instrument

• US 7,572,255 B2
• Filed: 09/19/2005
• Issued: 08/11/2009
• Est. Priority Date: 02/03/2004
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Podhajsky, Ronald J., Arts, Gene H., Sartor, Joe D., Reschke, Arlan J., Hogan, Michael
• Primary Examiner(s): Peffley; Michael
• Assistant Examiner(s): HUPCZEY, JR, RONALD JAMES
• Application Number:
  US11/229,814
• Publication Number:
  US 20060052772A1
• Time in Patent Office: 1,422 Days
• Field of Search: 606/41, 606/46, 606 48- 50
• US Class Current: 606/41
• CPC Class Codes: A61B 18/042 using additional gas becoming plasma

Abstract

A gas-enhanced electrosurgical instrument includes a hand-held applicator and a portable actuator assembly. The hand-held applicator has a gas delivery member adapted to deliver pressurized ionizable gas to the proximity of an electrode located adjacent a distal end of the applicator. The portable actuator assembly is capable of holding a source of pressurized ionizable gas, such as a cylinder or cartridge, and includes at least one controller to control the delivery of the gas from the source to the hand-held applicator and to control the delivery of electrosurgical energy to the hand-held applicator.

Claims

1. An electrosurgical instrument for providing pressurized ionized gas to a surgical site, comprising:

a hand-held applicator having proximal and distal ends, a gas delivery member adapted to deliver pressurized ionizable gas to the proximity of an electrode located adjacent the distal end of the applicator, the electrode being adaptable to connect to a source of electrosurgical energy; and

a portable actuator assembly configured to selectively store a source of pressurized ionizable gas therein, the portable actuator assembly including a housing having an actuator pivotably secured to the housing and at least one controller located within the housing and coupled to the source of pressurized ionizable gas that controls the delivery of the gas from the supply of pressurized ionizable gas to the hand-held applicator and controls the delivery of electrosurgical energy to the hand-held applicator, wherein the housing actuator is configured to engage the at least one controller upon actuation; and

wherein upon actuation of the at least one controller by the housing actuator, gas from the source of pressurized ionizable gas is delivered to the proximity of the electrode though the gas delivery member and electrosurgical energy is delivered to the electrode, such that an ionized gas is emitted from the distal end of the hand-held applicator.

2. The electrosurgical instrument according to claim 1, wherein the hand-held applicator comprises a tubular frame having a proximal end and a distal end, the distal end having a port defined therein for emitting the ionized gas.

3. The electrosurgical instrument according to claim 2, wherein the gas delivery member comprises a tube extending through the tubular frame.

4. The electrosurgical instrument according to claim 1, wherein the at least one controller is adapted to cause delivery of gas from the source of pressurized ionizable gas to the hand-held applicator prior to causing the delivery of the electrosurgical energy to the hand-held applicator.

5. The electrosurgical instrument according to claim 1, wherein the at least one controller comprises a first controller that controls the flow of gas from the source of pressurized ionizable gas to the hand-held applicator, and a second controller that controls delivery of the electrosurgical energy to the to the electrode.

6. The electrosurgical instrument according to claim 5, wherein the first controller causes the flow of gas from the source of pressurized ionizable gas to the hand-held applicator prior to the second controller causing the delivery of the electrosurgical energy to the hand-held applicator.

7. The electrosurgical instrument according to claim 5, wherein the first controller includes a valve and the second controller includes a switch.

8. The electrosurgical instrument according to claim 7, wherein the valve is actuated prior to actuation of the switch.

9. The electrosurgical instrument according to claim 1, wherein the source of pressurized ionizable gas includes a cylinder containing pressurized ionizable gas.

10. The electrosurgical instrument according to claim 9, wherein the gas in the cylinder comprises argon.

11. The electrosurgical instrument according to claim 1, wherein the source of pressurized ionizable gas includes a cartridge containing pressurized ionizable gas.

12. The electrosurgical instrument according to claim 11, wherein the gas in the cartridge comprises argon.

13. The electrosurgical instrument according to claim 1, wherein the portable actuator assembly comprises:

a gas source module within the housing for holding the source of pressurized ionizable gas.

14. The electrosurgical instrument according to claim 13, wherein the portable actuator assembly comprises:

a second controller located within the housing and connectable to a source of electrosurgical energy such that actuation of the second controller by the housing actuator causes the delivery of electrosurgical energy to the hand-held applicator.

15. The electrosurgical instrument according to claim 13, wherein the gas source module comprises:

a receptacle configured to hold the source of pressurized ionizable gas and movable so that the source of pressurized ionizable gas is movable between engaged and disengaged positions;

a locking assembly for locking the receptacle when the source of pressurized ionizable gas is in the engaged position; and

a coupler assembly in communication with the at least one controller and configured to engage at least a portion of the source of pressurized ionizable gas so that gas from the source is provided to the at least one controller.

16. The electrosurgical instrument according to claim 15, wherein the source of pressurized ionizable gas comprises a cylinder containing pressurized ionizable gas.

17. The electrosurgical instrument according to claim 16, wherein the cylinder includes a sealed outlet and the coupler assembly is configured to rupture the sealed outlet when the cylinder is moved to the engaged position.

18. The electrosurgical instrument according to claim 16, wherein the gas contained in the cylinder is argon.

19. The electrosurgical instrument according to claim 15, wherein the source of pressurized ionizable gas comprises a cartridge containing pressurized ionizable gas.

20. The electrosurgical instrument according to claim 19, wherein the gas contained in the cartridge is argon.

21. The electrosurgical instrument according to claim 19, wherein the cartridge includes a sealed outlet and the coupler assembly is configured to rupture the sealed outlet when the cartridge is moved to the engaged position.

22. The electrosurgical instrument according to claim 1, wherein the electrosurgical instrument is configured to coagulate body tissue.

23. The electrosurgical instrument according to claim 1, wherein the electrosurgical instrument is configured and adapted for use in an endoscopic application.

24. The electrosurgical instrument according to claim 1, wherein the ionizable gas comprises a mixture of inert gases.

25. The electrosurgical instrument according to claim 1, wherein the source of pressurized ionizable gas is visibly coded to indicate a characteristic of at least one of the type of gas in the supply of pressurized ionizable gas and the pressure of the pressurized ionizable gas.