Laparoscopic apparatus for performing electrosurgical procedures

• US 8,241,278 B2
• Filed: 04/29/2011
• Issued: 08/14/2012
• Est. Priority Date: 12/12/2005
• Status: Active Grant

• Current Assignee: Covidien AG (Medtronic Plc)
• Original Assignee: Covidien AG (Medtronic Plc)
• Inventors: Sartor, Joe D.
• Primary Examiner(s): Cohen, Lee S
• Application Number:
  US13/097,342
• Publication Number:
  US 20110202056A1
• Time in Patent Office: 473 Days
• Field of Search: 606/34, 606/37, 606/38, 606/42, 606/45, 606/49, 604/35
• US Class Current: 606/42
• CPC Class Codes: A61B 18/1482 having a long rigid shaft for accessing the inner body transcutaneously in minimal invasive surgery, e.g. laparoscopy
• CPC Class Codes: A61B 2218/002 Irrigation
• CPC Class Codes: A61B 2218/007 Aspiration

Abstract

A system and apparatus for irrigating a surgical site during an electrosurgical procedure are disclosed. The system includes a hand piece having an elongated housing connected to a multi-lumen tube extending proximally from the housing and having an irrigation tube for delivering irrigation fluid, a suction tube for withdrawing irrigation fluid, and electrical wiring, a first controls for adjusting flow of irrigation fluid within the irrigation tube and second controls for adjusting flow of irrigation fluid within the suction tube. A valve cassette is connected to the multi-lumen tube, which includes an irrigation valve configured to control the flow within the irrigation tube and a suction valve configured to control the flow within the suction tube. A hardware control module controls the irrigation valve and the suction valve based on control signals from the first and second controls.

Claims

1. A system for irrigating a surgical site during an electrosurgical procedure, comprising:

a hand piece having a housing with a multi-lumen tube extending therefrom and an electrode operatively associated therewith disposed in electrical communication with a generator, the multi-lumen tube including an irrigation tube configured to deliver irrigation fluid and a suction tube configured to withdraw irrigation fluid, the irrigation tube coupled to an irrigation fluid source and the suction tube coupled to a vacuum source, each of the irrigation tube and suction tube disposed in fluid communication with an irrigation tip having at least one outlet defined therein that supplies irrigation fluid and at least one inlet defined therein that withdraws irrigation fluid,

wherein the at least one inlet is distal relative to the at least one outlet with respect to the irrigation tip, the disposition of the at least one inlet opening permitting irrigation fluid to flow along a larger segment of the electrode thereby maximizing the transfer of heat from the electrode to the irrigation fluid.

2. A system of claim 1, wherein the hand piece further includes first controls configured to adjust the flow of irrigation fluid within the irrigation tube, second controls configured to adjust suction within the suction tube and third controls configured to allow the selection of an operating mode of the generator.

3. A system of claim 1, further including a valve cassette coupled to the multi-lumen tube, the valve cassette including an irrigation valve configured to control the flow within the irrigation tube and a suction valve configured to control the flow within the suction tube.

4. A system of claim 3, wherein the handpiece includes electrical wiring configured to transmit electrosurgical energy from the generator to the electrode, the first and second controls transmitting first and second control signals through the electrical wiring.

5. A system of claim 4, wherein a hardware control module is coupled to the electrical wiring and configured to receive the first and second control signals and is operable to control the irrigation valve based on the first control signals and to control the suction valve based on the second control signals, wherein the hardware control module monitors and controls the operation of the generator and valve cassette.

6. A system of claim 1, wherein the irrigation source is a pressurized bag.

7. A system of claim 6, further comprising a servo regulator configured to adjust pressure within the pressurized bag.

8. A system of claim 1, wherein the irrigation fluid is delivered by a variable speed pump from the irrigation source.

9. An apparatus of claim 1, wherein the electrode is disposed between the at least one inlet opening and the at least one outlet opening.

10. An apparatus of claim 1, wherein the irrigation tip includes a ball valve disposed at the at least one inlet opening to selectively prevent irrigation fluid from flowing therethrough.

11. A system for irrigating a surgical site during an electrosurgical procedure, comprising:

a generator;

an electrode;

a hand piece adapted to selectively couple to the generator and in operable communication with the electrode, the hand piece having a housing with a multi-lumen tube extending therefrom, the multi-lumen tube including an irrigation tube adapted to couple to a fluid source and a suction tube adapted to couple to a vacuum source; and

an irrigation tip having at least one outlet defined therein that supplies irrigation fluid and at least one inlet defined therein that withdraws irrigation fluid while the electrode is active, the irrigation tip in fluid communication with each of the irrigation tube and suction tube, the at least one inlet is distal relative to the at least one outlet with respect to a distal tip of the irrigation tip, the disposition of the at least one inlet permitting irrigation fluid to flow along a larger segment of the electrode thereby maximizing the transfer of heat from the electrode to the irrigation fluid.

12. A system of claim 11, further including an irrigation fluid source in fluid communication with the irrigation tube for delivering irrigation fluid and a vacuum source in fluid communication with the suction tube for withdrawing irrigation fluid.