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Adapter seal for laparoscopic cannula

  • US 5,263,944 A
  • Filed: 09/22/1992
  • Issued: 11/23/1993
  • Est. Priority Date: 09/22/1992
  • Status: Expired due to Term
First Claim
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1. An adapter seal adapted for facilitating the use of a small instrument within the bore of a cannula of the type used in laparoscopic surgery, the cannula having a proximal end adapted to remain outside the surgical site through which instruments may be inserted, the adapter seal comprising:

  • a body portion formed on an elastomeric material and being adapted for removably mounting on the proximal end of the cannula, the body portion having an aperture therein adapted to sealingly engage and support the small instrument while permitting movement of the instrument through the aperture; and

    an insertion guide mounted on the body portion adapted to guide the small instrument toward the aperture, the insertion guide being relatively rigid in comparison with the body portion, the insertion guide having a wall forming a generally conical passageway for guiding small instruments toward the aperture of the body portion.

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