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US 7,244,224 B2Granted
Pump driving unit for driving a pump used for supporting or substitution of cardiac function
AssigneeSenko Medical Instrument Mfg. Co., Ltd.
InventorsKinji Tsukahara, Hideki Wakui, Katsuya Tsuchimoto, Akira Suzuki
Life of this patent
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Abstract
In a small sized pump driving unit, a fluid pump is used for driving the pump for supporting of substituting of cardiac function. The fluid pump can generate pressure fluctuations that can generate pulsation of the pump for supporting or substituting of cardiac function and produces sufficient performance to drive the pump unit.
Claims11
A pump driving unit for driving a pump used for supporting or substitution of cardiac function, comprising:
- a fluid pump for pulsatively driving said cardiac pump;
- an isolator configured to be connected to said fluid pump by a liquid space and to said cardiac pump by a gas space;
- and
- control unit configured to control said fluid pump,
- wherein said isolator is configured to form a first space and a second space divided from each other by a flexible member,
- said first space is configured to be connected to said fluid pump and said first space and said liquid space are filled with a liquid as an incompressible fluid,
- said second space is configured to be connected to said cardiac pump wherein said second space and said gas space are filled with a gas as a compressible fluid, and
- wherein said isolator transmits pressure change from said fluid space to said gas space, thereby acting as a pressure converter member to apply a driving force to said cardiac pump used for supporting or substitution of cardiac function.
5 more elements
Dependencies are inferred from the claim text.