Heinrich Schima;Ing Francesco Moscato;Marcus Granegger
发明人:
Heinrich Schima,Ing Francesco Moscato,Marcus Granegger
申请号：
US13533437
公开号：
US08897873B2
申请日:
2012.06.26
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The flow rate of blood out of a blood pump is determined at least in part based on an acceleration of the pump's rotor and on the blood's viscosity. Considering the rotor acceleration when determining blood flow rate, increases the accuracy of the blood flow measurement thereby permitting the determination of a parameter related to the contractility of a patient's heart. The parameter may include a rate of pressure change of blood across the pump, a ratio of the rate of pressure change and a peak-to-peak value of the blood flow rate, or any other contractility index.
