System for detecting air
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United States of America Patent
Stats
-
Sep 20, 2005
Grant Date -
Oct 28, 2004
app pub date -
May 26, 2004
filing date -
Apr 20, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A dual port syringe has an upper port for connection to a fluid reservoir and a lower port for delivery of the medical fluid under pressure to a patient. A first valve is connected between the fluid reservoir and the upper port, and second valve is connected between the lower port and the patient. During a fill operation, a piston is moved within the syringe to drawn fluid from the reservoir into the syringe through the upper port. During injection operation, the piston moves in an opposite direction to force fluid out of the syringe through the lower port.
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