Variable interior dimension cannula assembly
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United States of America Patent
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-
Aug 2, 1994
Grant Date -
N/A
app pub date -
Jan 3, 1992
filing date -
Jan 3, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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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