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Surgical apparatus

  • US 5,893,862 A
  • Filed: 04/10/1997
  • Issued: 04/13/1999
  • Est. Priority Date: 04/10/1997
  • Status: Expired due to Term
First Claim
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1. Apparatus to remove tissue comprising:

  • an outer cannula;

    an inner cannula received within the outer cannula, the cannulae being longitudinally movable relative to each other;

    an abutment at the end of one cannula to contact the other cannula, the abutment having a narrowed outer edge to facilitate ingress into tissue to be removed and the abutment substantially covering the end of the other cannula when in contact;

    drive means to advance the other cannula to contact the abutment whereby tissue between the other cannula and the abutment is removed.

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