Surgical cannula with ball valve
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United States of America Patent
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Mar 14, 1995
Issued Date -
N/A
app pub date -
Nov 9, 1993
filing date -
Oct 9, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
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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