Gas-enhanced surgical instrument

• US 8,226,644 B2
• Filed: 07/15/2009
• Issued: 07/24/2012
• Est. Priority Date: 02/03/2004
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Sartor, Joe D., Hogan, Michael, Arts, Gene H., Podhajsky, Ronald J., Reschke, Arlan J.
• Primary Examiner(s): Peffley, Michael
• Assistant Examiner(s): HUPCZEY, JR, RONALD JAMES
• Application Number:
  US12/503,738
• Publication Number:
  US 20090275941A1
• Time in Patent Office: 1,105 Days
• Field of Search: 606 32- 52
• 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 actuator assembly for providing pressurized gas to an electrosurgical instrument, the assembly comprising:

a housing configured to receive a source of pressurized gas;

an actuator pivotably secured to the housing and configured to be depressed by a user;

a first controller located within the housing and configured to be coupled to the source of pressurized gas, the first controller controlling the delivery of the gas from the supply of pressurized gas to the electrosurgical instrument; and

a second controller located within the housing and configured to be coupled to a source of electrosurgical energy, the second controlling the delivery of electrosurgical energy from the source of electrosurgical energy to the electrosurgical instrument, wherein the actuator is configured to engage the first and second controllers upon depression of the actuator.

2. The actuator assembly according to claim 1, operably connected to the electrosurgical instrument, wherein the electrosurgical instrument includes a hand-held applicator having a tubular frame including proximal and distal ends, the distal end having a port defined therein for emitting ionized gas.

3. The actuator assembly according to claim 1, wherein the first controller initiates the flow of gas from the source of pressurized gas to the electrosurgical instrument prior to the second controller initiating delivery of the electrosurgical energy to the electrosurgical instrument.

4. The actuator assembly according to claim 1, wherein the first controller includes a valve and the second controller includes a switch.

5. The actuator assembly according to claim 4, wherein the valve is actuated prior to actuation of the switch.

6. The actuator assembly according to claim 1, further comprising:

a gas source module disposed within the housing configured to hold the source of pressurized gas.

7. The actuator assembly according to claim 6, wherein the gas source module includes:

a receptacle for configured to hold the source of pressurized gas, the receptacle being movable to engage the source of pressurized gas;

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

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

8. The actuator assembly according to claim 7, wherein the source of pressurized gas includes a cylinder containing pressurized argon.

9. The actuator assembly according to claim 8, 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.

10. The actuator assembly according to claim 1, operably connected to the electrosurgical instrument, wherein the electrosurgical instrument is configured to coagulate body tissue.

11. The actuator assembly according to claim 1, operably connected to the electrosurgical instrument, wherein the electrosurgical instrument is configured and adapted for use in an endoscopic application.

12. The actuator assembly according to claim 1, wherein the source of pressurized gas is visibly coded to indicate a characteristic of at least one of the type of gas in the supply of pressurized gas and the pressure of the pressurized gas.

13. An actuator assembly for providing pressurized gas to an electrosurgical instrument, the assembly comprising:

a source of pressurized gas;

a housing configured to receive a source of pressurized gas;

an actuator pivotably secured to the housing and configured to be depressed by a user; and

at least one controller located within the housing and configured to be coupled to the source of pressurized gas, the at least one controller controlling the delivery of the gas from the supply of pressurized gas to the electrosurgical instrument and controlling the delivery of electrosurgical energy from a source of electrosurgical energy, wherein the actuator is configured to engage the at least one controller upon depression of the actuator and the source of pressurized gas is visibly coded to indicate a characteristic of at least one of the type of gas in the supply of pressurized gas and the pressure of the pressurized gas.