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Surgical penetration and dissection instrument

  • US 5,569,291 A
  • Filed: 02/01/1995
  • Issued: 10/29/1996
  • Est. Priority Date: 02/01/1995
  • Status: Expired due to Term
First Claim
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1. A surgical instrument for penetrating or dissecting bodily tissue, said instrument comprising a generally cylindrical, elongated hollow shaft having a longitudinal axis and proximal and distal ends, said hollow shaft having a lumen therethrough with a diameter sized to slidably receive an endoscope therein from said shaft proximal end to said shaft distal end;

  • a hub attached to said shaft proximal end having a passageway therethrough communicating with said shaft lumen; and

    an endoscope locking assembly on said hub, said locking assembly including a camming member therein, said camming member terminating at an arcuate camming edge surface;

    wherein when said endoscope is received in said shaft lumen, said locking assembly is actuable from an open position wherein said arcuate camming edge surface of said camming member of said locking assembly is spaced from said shaft lumen and disengaged from said endoscope, to a closed position wherein said arcuate camming edge surface constricts said shaft lumen and engages said endoscope so as to prevent substantial movement thereof.

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