Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-01-06
2000-07-04
O'Connor, Cary E.
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604164, 604165, 604248, A61B 1732, A61B 1900
Patent
active
060832037
ABSTRACT:
An endoscopic portal includes a valve assembly disposed at an open proximal end of a sleeve or cannula providing access to an internal operative site, the valve assembly having a passage therethrough of variable size to engage surgical instruments passing therethrough in sealing relation to prevent flow or leakage of fluid through the valve assembly.
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