Intracardiac blood pump
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United States of America Patent
Stats
-
Jan 23, 2001
Grant Date -
N/A
app pub date -
Nov 24, 1998
filing date -
Mar 31, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A blood pump comprises a drive portion (11) and a pump portion (12) prolongated by a flexible hose (13). Pressure sensors (60, 61) determine the differential pressure between the inlet side and the outlet side of the pump. The volume flow can be determined from the differential pressure in conjunction with the rotational speed. Further, the differential pressure may be used to find the correct position of the pump in the heart. As an alternative to measuring the differential pressure, the motor current consumed by the motor (21) is measured and the volume flow of the pump is calculated therefrom under consideration of the known rotational speed. The signal from the pressure measuring device or the motor current may be used to establish the correct position of the pump in the heart.
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