SURGICAL INSTRUMENT ACCESS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a surgical access device having both functions of a zero seal and an instrument seal and adaptable to a wide range of instruments having diameters up to about 37 mm.

SOLUTION: The surgical access device includes a single valve that forms a seal with a body wall and constitutes an access channel into a body cavity. The valve forms the zero seal in the absence of an instrument and forms the instrument seal in the presence of an instrument having a diameter up to about 37 mm. The valve includes a gel material, and the access channel can include a protective sleeve for wound protection during insertion and withdrawal of a sharp surgical instrument. The valve further includes a cap ring which may be inserted or molded with the gel material. The protective seal may be bonded or molded around an inner diameter of the cap ring. The protective sleeve may be constituted to be a single tubular member or to be a plurality of axially extending sleeve members having a plurality of axial slits.

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