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Surgical cutting instrument

  • US 5,290,303 A
  • Filed: 09/08/1992
  • Issued: 03/01/1994
  • Est. Priority Date: 06/22/1990
  • Status: Expired due to Term
First Claim
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1. A surgical cutting instrument comprising:

  • an elongated sheath having a distal end, a proximal end, and a hollow passageway positioned longitudinally therebetween, said sheath also having an outer surface including a bevel extending longitudinally from said distal end of said sheath; and

    a rigid inner elongated member rotatably positioned within and extending through said hollow passageway of said sheath, said member having an open distal end extending beyond said distal end of said sheath, a proximal end connectable to a rotary drive mechanism, and a hollow passageway extending longitudinally therethrough from said open distal end thereof for removing tissue, said member being in rotational contact with said elongated sheath about said distal and proximal ends thereof, said open distal end of said inner elongated member including a rotary cutting edge positioned circumferentially around said hollow passageway and said open distal end of said inner member for cutting through tissue when said member is rotated, said inner member having an outer surface including a predetermined radius extending longitudinally from said cutting edge and said open distal end.

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