Seal assembly for access device

Details Seal assembly for access device Seal assembly for access device

1993-04-23

1995-08-22

Shay, Randy C.

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

137849, 604256, A61M 5178

Patent

active

054434521

ABSTRACT:
Access devices to facilitate the introduction of various surgical instruments into vessels, conduits, cavities, and other interior regions of the body are disclosed, which include a "duck bill" valve having at least three flexible fold sections or leaflets subtending 360.degree. degrees of the cylindrical wall portion. The valve is configured to provide reduced friction forces when an instrument is inserted, as well as zero closure characteristics when the instrument is removed.

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