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Elastomeric valve assembly

  • US 5,456,284 A
  • Filed: 05/10/1993
  • Issued: 10/10/1995
  • Est. Priority Date: 05/10/1993
  • Status: Expired due to Term
First Claim
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1. A valve adapted to receive a surgical instrument and having an axis extending between a proximal end and a distal end of the valve, comprising:

  • an outer wall extending between the proximal end and the distal end of the valve;

    a pair of inner walls extending between the distal end and the proximal end of the valve and converging distally to intersect at a slot formed between the inner walls, the inner walls having a tendency to separate when the instrument is inserted between the inner walls and through the slot, and to form an undesirable leakage channel having a cross-sectional area around the instrument; and

    at least one compression member extending between the outer wall and an associated one of the inner walls, the compression member being adapted to compress in response to insertion of the instrument and to exert a force on the associated inner wall when compressed to reduce the cross-sectional area of the leakage channel.

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