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Skin abrading apparatus

  • US 20050154333A1
  • Filed: 03/10/2005
  • Published: 07/14/2005
  • Est. Priority Date: 09/16/2002
  • Status: Abandoned Application
First Claim
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1. A surgical device for use as a skin abrading non-aspirating apparatus, the apparatus comprising:

  • a handle configured for gripping by a human operator;

    a reciprocating motion generator associated with said handle;

    an applicator releasably securable to said handle and having an applicator blade for applying abrading motion;

    coupler means for coupling said applicator to said reciprocating motion generator and for transferring reciprocating motion from said reciprocating motion generator to said applicator blade;

    said reciprocating motion generator being a magnetostrictive ultrasonic transducer;

    said handle having a cavity in an interior thereof, the cavity receiving and extending about said magnetostrictive ultrasonic transducer;

    a fluid inlet near one end of said handle, fluidly communicating with said cavity for supplying fluid to said cavity from a fluid source;

    a fluid outlet near an opposite end of said handle, fluidly communicating with said cavity for discharging fluid from said cavity;

    said magnetostrictive ultrasonic transducer further comprising a stack of magnetostrictive laminations insertable into said cavity and said cavity includes at least one electronically conducting coil for surrounding said stack and inducing an electromagnetic field in said stack in response to electrical current flow in said coil, wherein said stack is caused to longitudinally move;

    said coupler means mechanically couples said applicator to said stack and said apparatus has a fluid conduit means associated with said fluid outlet for directing said fluid onto said applicator blade;

    the fluid serving as a cooling fluid, wherein said cooling fluid, cavity and flow of said cooling fluid from the fluid inlet end of the cavity, through the cavity and out the fluid outlet from said cavity removes a heat generated within the cavity of the handle by the magnetostrictive ultrasonic transducer to prevent said magnetostrictive ultrasonic transducer and handle from overheating;

    said fluid conduit means including at least one irrigation passage extending from said cavity and through said coupler;

    said at least one electronically conducting coil being connected to an ultrasonic generator capable of generating an electrical current having an ultrasonic frequency;

    said ultrasonic generator converts a 50-60 Hz AC input current into an ultrasonic frequency output current and causes said magnetostrictive ultrasonic transducer to vibrate at ultrasonic frequencies;

    the skin abrading non-aspirating apparatus further being adapted for use in cosmetic procedures, wherein;

    said magnetostrictive ultrasonic transducer is adapted to operate so as to vibrate at a vibrating frequency of between 28 and 32 kHz;

    said applicator blade is operable so as to have a reciprocating amplitude of vibration of between 12 and 37 microns, said applicator blade being adapted to have an application angle and dimension to minimize or eliminate any flexural mode of the applicator blade; and

    said skin abrading apparatus further comprises means for eliminating high acoustic losses which would cause excess heating and pose a safety threat to a patient or cause premature fracture or failure, said means being the construction of the applicator blade with titanium material, wherein said titanium material has a grain direction aligned with a longitudinal axis of said applicator blade, and when in use at the operable range of vibrating frequency and reciprocating amplitude of vibration, the apparatus is adapted to be capable of microbrading a stratum corneum of an epidermis without cutting, chopping or cavitating the skin of the patient.

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