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Multiport trocar

  • US 6,217,555 B1
  • Filed: 01/14/1996
  • Issued: 04/17/2001
  • Est. Priority Date: 07/14/1994
  • Status: Expired due to Term
First Claim
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1. An access device adapted to extend across a body wall into a body conduit or cavity and to form a seal around an instrument inserted through the device into the body conduit or cavity, the device comprising:

  • a cannula forming an elongate passage extending from a proximal end to a distal end of the cannula;

    a valve housing disposed at the proximal end of the cannula;

    a side wall of the valve housing having a fixed relationship with the cannula;

    an end cap of the valve housing, having a floating relationship with the side wall of the valve housing;

    a first valve set disposed relative to the housing and forming with the passage of the cannula a first working channel;

    a first septum valve included in the first valve set and disposed along the first working channel;

    a first zero closure valve included in the first valve set and disposed along the first working channel axially of the first septum valve;

    a second valve set disposed relative to the housing and forming with the passage of the cannula a second working channel;

    a second septum valve included in the second valve set and disposed along the second working channel;

    a second zero closure valve included in the second valve set and disposed along the second working channel axially of the second septum valve; and

    an elastomeric member having properties for flexibly supporting at least one of the first septum valve and the second septum valve relative to the housing in a floating relationship with the cannula.

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