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    • 1. 发明申请
    • VENTRICULAR ASSIST DEVICE AND RELATED COMPUTER PROGRAM PRODUCT
    • 航空辅助设备及相关计算机程序产品
    • US20080045779A1
    • 2008-02-21
    • US11779656
    • 2007-07-18
    • Stefano RINALDIMaurizio ZAGARAManlio FIERLIGloria PESCE DELFINOMauro ERCOLANI
    • Stefano RINALDIMaurizio ZAGARAManlio FIERLIGloria PESCE DELFINOMauro ERCOLANI
    • A61M1/10
    • F04B43/04A61M1/1005A61M1/1037A61M1/1046A61M1/106A61M1/1086A61M1/122A61M1/127
    • A cardiac ventricular assist device or VAD includes a pumping unit with a variable-volume chamber capable of receiving a mass of blood, and a control unit to control the pumping unit to obtain contraction of the variable-volume chamber, with consequent expulsion of the blood collected in the chamber, and expansion of the variable-volume chamber consequent on the flow of blood into the chamber. A flow line is included, such as a transcutaneous line, for a gaseous flow caused by the contraction and expansion of the variable-volume chamber. A sensor sensitive to the gaseous flow in the flow line generates a flow-meter signal that is indicative of the expulsion and inflow of blood with regard to the variable-volume chamber. The control unit is sensitive to said flow-meter signal and utilises that signal to control the pumping unit, for example to cause the pumping unit to operate in a condition of synchronous counterpulsation with regard to the natural heart, that is with the variable-volume chamber capable of receiving blood from the assisted heart when it is in a systolic phase and the variable-volume chamber that expels the blood collected in the chamber, when the assisted heart is in a diastolic phase.
    • 心脏心室辅助装置或VAD包括具有能够接收大量血液的可变容积腔的泵送单元和控制单元以控制泵送单元以获得可变体积腔室的收缩,从而导致血液 收集在腔室中,并且随着血液流入腔室而使可变体积腔室膨胀。 包括由可变容积室的收缩和膨胀引起的气流的流动线,例如经皮线。 对流线中的气流敏感的传感器产生一个流量计信号,该信号表示血液相对于可变体积腔室的排出和流入。 控制单元对所述流量计信号敏感并且利用该信号来控制泵送单元,例如使得泵送单元在相对于自然心脏的同步反搏的状态下运行,即具有可变容积 当辅助心脏处于舒张期时能够从辅助心脏接收血液,当其处于收缩期时,以及当辅助心脏处于舒张期时,能够将收集在腔室中的血液排出的可变体积腔室。