Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1994-08-02
1995-12-26
Hirsch, Paul J.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604169, A61M 3906
Patent
active
054783186
ABSTRACT:
An endoscopic portal includes a tubular sleeve or cannula having an open distal end for positioning within an anatomical cavity, an open proximal end for positioning externally of the anatomical cavity, and a valve assembly disposed at the open proximal end of the sleeve for controlling fluid passing therethrough. The valve assembly includes a spherical valve body defining a plurality of different size lumens or passages that can be selectively aligned with the open proximal end of the sleeve. The valve body is rotatably carried in a valve housing mounting the proximal end of the sleeve and is preferably biased toward a position closing a passage formed through the valve housing.
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