Apparatus for providing enhanced tissue fragmentation and/or hemostasis

• US 5,015,227 A
• Filed: 04/03/1990
• Issued: 05/14/1991
• Est. Priority Date: 09/30/1987
• Status: Expired due to Term

• Current Assignee: Integra Lifesciences Corporation (Integra LifeSciences Holdings Corporation)
• Original Assignee: Valleylab Inc. (Medtronic Plc)
• Inventors: Kuhl, Peter J., Logan, Joseph N., Broadwin, Alan
• Primary Examiner(s): Cohen, Lee S.
• Application Number:
  US07/504,453
• Time in Patent Office: 406 Days
• Field of Search: 604/22, 604/35, 128/24 A, 606/42, 606/45, 606/48-50, 606/169-171, 200/505, 200/511
• US Class Current: 604/22
• CPC Class Codes: A61B 17/22012 in direct contact with, or very close to, the obstruction or concrement for removing obstructions in blood vessels by laser A61B18/245
• CPC Class Codes: A61B 17/320068 using mechanical vibrations, e.g. ultrasonic A61B17/22012 takes precedence; dental tooth drilling devices operated by vibration A61C3/03; removing intra-ocular material using mechanical vibrations A61F9/00745
• CPC Class Codes: A61B 18/14 Probes or electrodes therefor
• CPC Class Codes: A61B 2017/00973 pedal-operated
• CPC Class Codes: A61B 2017/320084 Irrigation sleeves
• CPC Class Codes: A61B 2018/00011 with fluids
• CPC Class Codes: A61B 2018/00077 high, i.e. electrically conducting
• CPC Class Codes: A61B 2018/00589 Coagulation
• CPC Class Codes: A61B 2018/00958 for switching between different working modes of the main function
• CPC Class Codes: H01H 2300/014 Application surgical instrument

Abstract

An improved device for delivering RF current to the operating tool of an ultrasonic surgical apparatus which comprises a switch module for selecting said RF current, an electrically conducting metal band connected to the switch module and an electrically conductive O-ring in electrical contact with the metal band and located around the acoustic conecting member of the apparatus.

Claims

1. In a surgical apparatus for performing one or more surgical procedures at a surgical site on a patient comprising:

a handpiece;

a tool supported by said hand-piece;

said tool having a vibrating tool tip;

vibrating means including a metal connecting member for ultrasonically vibrating said tool tip; and

RF current means selectively operable for providing an RF current to said tool tip for allowing performance of an electrosurgical procedure at the surgical site;

said RF current means including switching means for switching the RF current provided to said tool tip to at least an RF cutting current during ultrasonic vibration, the improvement wherein said switching means comprises a switch module for selecting said RF current, an electrically conducting metal band connected to said switch module and an electrically conductive O-ring around said connecting member and in electrical contact with said metal band.

2. An apparatus according to claim 1, in which said conductive O-ring is made from an elastomer impregnated with electrically-conducting particles of silver coated aluminum.

3. An apparatus according to claim 1, in which said electrically conducting metal band is connected to the switch module through an electrically conducting bifurcated terminal.

4. An apparatus according to claim 1, in which said tool tip has a tip opening and a tool passageway therethrough communicating with said tip opening, and the apparatus includes aspirating means for applying a suction pressure on said tool passageway for aspirating tissue particles and fluid at the surgical site through said tip opening through said tool passageway and away from the surgical site.