SYSTEMS AND METHODS OF DERIVING PRESSURES EXTERNAL TO AN INTRACARDIAC BLOOD PUMP USING INTERNAL PRESSURE SENSORS
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United States of America Patent
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Issued Date -
Jan 5, 2023
app pub date -
Jun 24, 2022
filing date -
Jun 24, 2022
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Abstract
Systems and methods for deriving pressures outside of a blood inlets and blood outlets of an intracardiac blood pump assembly, and pressure differentials therebetween. Pressures outside of a blood inlet may be derived based on one or more readings from a pressure sensor placed within a blood inlet, one or more readings from a differential pressure sensor configured to measure pressure differential across a wall of the pump housing or cannula, and speed of the pump motor. Pressure differentials between a blood inlet and blood outlet may be derived based on one or more readings from the differential pressure sensor and speed of the pump motor. Pressures outside of a blood outlet may be derived based on a derived pressure outside of a blood inlet and a derived pressure differential between the blood inlet and the blood outlet.
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