Intravenous piston pump disposable and mechanism
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United States of America Patent
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Feb 14, 2017
Grant Date -
Aug 7, 2014
app pub date -
Apr 9, 2014
filing date -
May 27, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
An apparatus for delivery of fluids to a patient includes an inlet tube and an outlet tube connected to each other at an angular joint. A rotary valve and a piston are fitted to the angular joint forming a chamber. The rotary valve is provided with a priming channel notch and a pumping notch. For priming operation with the fluid delivery apparatus, a user sets the rotary valve to a priming position. During pumping operation, the rotary valve rotates in coordination with the piston to transfer a quantum of fluid from the inlet tube to the outlet tube via the chamber. A second piston is optionally provided on the outlet tube for smoothing out flow rate pulsations.
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