Measuring and testing – Instrument proving or calibrating – Fluid pressure
Reexamination Certificate
2006-03-14
2006-03-14
Williams, Hezron (Department: 2856)
Measuring and testing
Instrument proving or calibrating
Fluid pressure
C073S001610, C073S001630
Reexamination Certificate
active
07010954
ABSTRACT:
An intracardiac rotary pump (10) is provided with a pressure differential sensor (18) for supporting the pumping heart. The pressure differential sensor measures the pressure differential between aorta (AO) and left ventricle (LV). This pressure differential must correspond to certain desired values at different speed stages. If the pressure differential deviates to too large an extent, the deviation is recognized as a drift of the pressure sensor, and a correction value is determined in dependence on the drift, the subsequently measured pressure values being corrected with the aid of this correction value. In this manner it is possible to carry out a drift correction on the sensor with the pump arranged in the heart and even with the pump in operation.
REFERENCES:
patent: 4598579 (1986-07-01), Cummings et al.
patent: 5437284 (1995-08-01), Trimble
patent: 6159160 (2000-12-01), Hsei et al.
patent: 6234759 (2001-05-01), Hennel et al.
patent: 6623420 (2003-09-01), Reich et al.
patent: 2003/0139643 (2003-07-01), Smith et al.
patent: 2004/0106874 (2004-06-01), Eigler et al.
patent: WO 97/49439 (1997-12-01), None
patent: WO 98/43688 (1998-10-01), None
Boensch Stefan
Nix Christoph
Siess Thorsten
Fayyaz Nashmiya
Fulwider Patton LLP
Impella CardioSystems AG
Williams Hezron
LandOfFree
Method for calibrating a pressure sensor or a flow sensor at... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for calibrating a pressure sensor or a flow sensor at..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for calibrating a pressure sensor or a flow sensor at... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3564784