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ACCESS APPARATUS WITH SHALLOW ZERO CLOSURE VALVE

  • US 20080300455A1
  • Filed: 05/29/2008
  • Published: 12/04/2008
  • Est. Priority Date: 05/31/2007
  • Status: Active Grant
First Claim
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1. A surgical access assembly for use with a surgical access device, which comprises:

  • a housing defining a central longitudinal axis;

    an elongate access member extending from the housing, the housing and the access member having a longitudinal passage dimensioned to permit passage of a surgical instrument;

    an instrument seal disposed within the housing and being adapted to establish a substantial fluid tight seal about the instrument; and

    a zero closure valve mounted relative to the housing and being adapted to assume an open condition upon passage of the surgical instrument and a substantially closed position in the absence of the instrument, the zero closure valve including a valve periphery and first and second lips depending from the valve periphery, the first and second lips having lip edge surfaces in juxtaposed relation to define a slit when the valve is in the closed position thereof, at least one of the lips having a general arcuate internal lip surface leading to the lip edge surface to define a sloping configuration dimensioned to facilitate passage of the surgical instrument through the valve.

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