发明名称 |
SUCTION DETECTION ON AN AXIAL BLOOD PUMP USING BEMF DATA |
摘要 |
The presence or absence of a suction condition in an implantable blood pump is determined at least in part based on a parameter related to flow, such as a parameter related to thrust on the rotor of the pump. A local extreme of the parameter representing the minimum flow during ventricular diastole in an earlier interval is used to establish a threshold value. A value of the parameter representing the minimum flow during ventricular diastole in a later interval is compared to this threshold. If the comparison indicates a substantial decline in the minimum flow between the earlier and later intervals is associated with a suction condition. During the absence of a suction condition, the threshold is continually updated, so that the system does not indicate presence of a suction condition if the flow decreases gradually. |
申请公布号 |
US2014100413(A1) |
申请公布日期 |
2014.04.10 |
申请号 |
US201313951302 |
申请日期 |
2013.07.25 |
申请人 |
CASAS FERNANDO;REYES CARLOS;HEARTWARE, INC. |
发明人 |
CASAS FERNANDO;REYES CARLOS |
分类号 |
A61M1/12 |
主分类号 |
A61M1/12 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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