Cannula with ball valve

Details Cannula with ball valve Cannula with ball valve

1992-10-09

1994-10-18

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604167, 604246, 604247, 604249, A61M 500

Patent

active

053563948

ABSTRACT:
An improved cannula for providing access to a body passage for inserting instruments. The cannula of the present invention includes an improvement in the form of a biased ball valve for sealing the inlet of a housing attached to the proximal end of the cannula. The ball valve includes a seal member with an upwardly curved portion that is biased towards a second seal portion at a second end of the housing whereby the ball seats and seals the inlet to the housing cavity.

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