Surgical cannula with ball valve

Details Surgical cannula with ball valve Surgical cannula with ball valve

1993-11-09

1995-03-14

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604167, 251303, 1375276, 138 89, A61M 500, F16K 1500

Patent

active

053973143

ABSTRACT:
This invention relates to a surgical cannula that has a simple ball valve assembly comprising a ball, rotatably mounted on an axle extending between opposing legs of a pivotable yoke, which engages a seat to seal the instrument inlet to the cannula passageway when a trocar instrument is removed and moves out of the path of the instrument during insertion thus avoiding wear and strain on the valve and the instrumentation.

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