Trocar flapper valve
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United States of America Patent
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-
Nov 23, 1999
Issued Date -
N/A
app pub date -
Aug 13, 1996
filing date -
May 6, 1994
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A trocar is formed from a cannula and an interfitting obturator for penetrating body cavity walls in laparoscopic and endoscopic surgery. The cannula has an improved inexpensive flexible flapper valve and can be manufactured with a reusable cannula tube but disposable flapper valve assembly to minimize cost.
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