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Surgical instruments useful for endoscopic spinal procedures

  • US 5,755,732 A
  • Filed: 02/11/1997
  • Issued: 05/26/1998
  • Est. Priority Date: 03/16/1994
  • Status: Expired due to Term
First Claim
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1. An endoscopic surgical instrument for cutting tissue comprising:

  • a handle portion including an actuation member;

    an elongated endoscopic portion extending distally from said handle portion;

    an actuation rod longitudinally reciprocable movable within said endoscopic portion and operatively associated with said actuation member;

    a cutting member operatively associated with said actuation rod, said cutting member being movable by said actuation member between a sheathed position within said endoscopic portion and a deployed position in which at least a portion of said cutting member extends distally from said endoscopic portion; and

    a gaseous sealing member disposed within said endoscopic portion, said sealing member dimensioned to form a substantial fluid-tight seal within said endoscopic portion to prevent egress of gaseous media therethrough.

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