Vacuum infusion device
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United States of America Patent
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-
Jun 18, 1991
Grant Date -
N/A
app pub date -
Apr 26, 1990
filing date -
Apr 26, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A vacuum biased disposable infuser is provided having a liquid chamber (14) and at least one vacuum chamber (44). The liquid chamber (14) includes a liquid plunger (26) contained therein while the vacuum chamber (44) includes a vacuum plunger (48). The plungers (26, 48) are connected by an arm such that when liquid under pressure is provided to the liquid chamber (14), the vacuum plunger (48) is drawn back in the vacuum chamber (44). The device is further preloaded such that at the end of infusion, the vacuum plunger (48) does not abut against the vacuum chamber (44).
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