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Seal assembly for accommodating introduction of surgical instruments

  • US 5,492,304 A
  • Filed: 06/16/1993
  • Issued: 02/20/1996
  • Est. Priority Date: 06/16/1993
  • Status: Expired due to Term
First Claim
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1. A seal assembly which comprises:

  • (a) a housing;

    (b) a resilient first gasket associated with said housing, said first gasket having an aperture formed therein for receiving surgical instrumentation;

    an,(c) dilating means forming a passageway therethrough and having a continuous exterior face of fixed dimension associated with said housing for dilating said aperture of said first gasket;

    wherein said first gasket and said dilating means are adapted for relative movement therebetween, said first gasket and said dilating means assuming a first position wherein said aperture of said first gasket is spaced from said dilating means and is adapted to receive surgical instrumentation of a first diameter with minimal insertion force, and assuming a second position wherein said aperture of said first gasket is stretched around said exterior face of said dilating means for receiving surgical instrumentation of a second diameter greater than said first diameter with minimal insertion force.

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