Cannula for a vein distention system
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United States of America Patent
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Apr 6, 1982
Issued Date -
N/A
app pub date -
May 8, 1980
filing date -
Jan 18, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A cannula used in the distention and irrigation of a saphenous vein which is being tested prior to use as a coronary or peripheral bypass graft includes a tapered and beveled tip which allows easy insertion into the vein, and a sloping shoulder just proximal to the tip which provides a convenient site for firmly securing the vein to the cannula with a ligature. The cannula can be utilized in a distention and irrigation apparatus which includes a pressure limiting device having a resilient membrane reservoir which limits static pressure delivered to the vein to a predetermined level. The device is connected between the cannula of the present invention and a syringe filled with irrigation fluid.
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