Patent ID: 6860857
Filing Date: 2005-03-01
Classification: A61B

Abstract:
1. An implantable intravascular pressure determining device comprising: a pressure sensor adapted for placement in a vascular system of a subject for generating a raw pressure signal; an acceleration sensor, separate from said pressure sensor, adapted for measuring acceleration associated with said subject and for generating an acceleration signal corresponding to the measured acceleration, said acceleration signal being separate from said raw pressure signal; an evaluation unit supplied with said raw pressure signal and said acceleration signal for identifying time intervals, in which said measured acceleration is below a predetermined threshold, and for generating, a control signal in said time intervals said evaluation unit identifying a maximum signal strength of said acceleration signal, and setting said predetermined threshold to a predetermined fraction of said maximum signal strength; and a processor supplied with said raw pressure signal and said control signal for processing said raw pressure signal, to generate a processed signal corresponding to intravascular pressure, only in the time intervals represented by said control signal.