Method and an apparatus for determination of blood pressure

摘要

A method and an apparatus for non-interfering blood pressure measurements, relates to an apparatus for continuously monitoring blood pressure for patients at home or at work. The apparatus includes an extra-corporal sensor for blood pressure determination with a flexible housing adapted to be attached to the body of a living being proximate to an artery, and an electronic circuit for wireless coupling to a remote transceiver in accordance with the blood pressure in the artery, the remote transceiver adapted for wireless coupling to the sensor for generation of a pressure signal in accordance with the blood pressure in the artery, and a processor connected to the remote transceiver for reception of the pressure signal and adapted to estimate systolic and diastolic pressure based on the signal.

主权项

1. A blood pressure determination sensor comprising:
a flexible housing with a lower surface and a plurality of metal sheets comprising at least a first and a second mutually isolated metal sheets, wherein the flexible housing supports the first and the second mutually isolated metal sheets on the lower surface and comprises an attaching means such that when the flexible housing is attached to a body of a patient, proximate to an artery using the attaching means, the first and the second mutually isolated metal sheets form plates of a capacitor with at least the artery as a dielectric between the plates; an inductor located in the flexible housing and electrically connected to the first and the second mutually isolated metal sheets such that the capacitor, formed when the flexible housing is attached to the body of the patient, and the inductor are interconnected to form a resonant circuit as an electronic sensor circuit, wherein a resonant frequency of the resonant circuit varies with a diameter of the artery in accordance with blood pressure; a transceiver comprising a circuit, wirelessly coupled to the resonant circuit, that generates a pressure signal corresponding to variations of the resonant frequency of the resonant circuit; and a computer comprising a processor configured to record the resonant frequency of the resonant circuit of the blood pressure determination sensor from the pressure signal and perform calculations for determination of the blood pressure of the patient using the resonant frequency of the resonant circuit.