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Disposable battery powered rotary tissue cutting instruments and methods therefor

  • US 20040092992A1
  • Filed: 10/23/2002
  • Published: 05/13/2004
  • Est. Priority Date: 10/23/2002
  • Status: Abandoned Application
First Claim
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1. A disposable battery powered rotary tissue cutting instrument for soft tissue removal comprising a blade comprising an elongate tubular outer member and an elongate tubular inner member rotatably disposed within said outer member, said outer member extending distally from an outer member hub to a distal end having a side-facing opening, said outer member having a cutting edge extending along a peripheral edge of said opening, said inner member extending distally from an inner member hub to a distal end having a side-facing opening adjacent said opening in said outer member, said inner member including a cutting edge extending along a peripheral edge of said opening in said inner member and cooperable with said cutting edge of said outer member to cut soft anatomical tissue adjacent said opening in said outer member when said inner member is rotated relative to and within said outer member;

  • and a powered surgical handpiece comprising a housing fixedly mounting said outer member hub and rotatably mounting said inner member hub, a motor within said housing for rotating said inner member, a battery unit within said housing for powering said motor, and a control unit disposed along an external surface of said housing for controlling operation of said motor, said motor having a drive shaft in driving engagement with said inner member hub, said battery unit including at least one battery electrically connected with said motor, said control unit being electrically connected with said battery unit and being operable to selectively allow electric current to flow from said at least one battery to said motor to start and stop rotation of said drive shaft, said instrument being disposable upon completion of a surgical procedure performed with said instrument on a single patient.

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