Noninvasive blood pressure determination method and apparatus

Details Noninvasive blood pressure determination method and apparatus Noninvasive blood pressure determination method and apparatus

2008-05-20

2008-05-20

Nasser, Jr., Robert L. (Department: 3735)

Surgery

Diagnostic testing

Cardiovascular

C600S500000, C600S509000

Reexamination Certificate

active

11364174

ABSTRACT:
The method and the apparatus serve for non-invasively determining the blood pressure of a patient. An electrical cardiac potential measurement signal and a pulse-pressure-wave measurement signal are detected which, starting from the heart, propagate within the blood vessels as far as to a pulse-feeling location. A pulse-pressure-wave propagating time between the heart and the pulse-feeling location is determined, based on the electrical measurement signal and the pulse measurement signal. The blood pressure is determined by the aid of a function interrelationship on the basis of the propagating time, with the function interrelationship comprising a first portion that specifies the active elasticity behaviour of the blood vessels, and a second portion that specifies the passive electricity behaviour of the blood vessels. In this way, especially accurate blood pressure determination is rendered possible.

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