Variable interior dimension cannula assembly

Details Variable interior dimension cannula assembly Variable interior dimension cannula assembly

1992-01-03

1994-08-02

Rosenbaum, C. Fred

Surgery

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

Treating material introduced into or removed from body...

604246, A61M 500

Patent

active

053341643

ABSTRACT:
A cannula assembly for use in conjunction with endoscopic surgical techniques includes a cannula, a housing mounted on one end of the cannula, and a variable interior dimension cannula valve assembly in the housing. The variable interior dimension cannula valve assembly includes a flexible tubular member having a distal portion affixed to the housing, an intermediate portion capable of changing interior dimension and a proximate portion including a rigid rotating means and a locking means. The interior dimension of the cannula valve assembly may be set to a desired size to fit a surgical instrument inserted into the cannula passage while maintaining a substantially air-tight seal.

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