公开(公告)号：WO2021240374A2

公开(公告)日：2021-12-02

申请号：PCT/IB2021/054556

申请日：2021-05-25

Applicant: TALLINN UNIVERSITY OF TECHNOLOGY

Inventor： OJARAND, Jaan ,  MIN, Mart ,  MÄRTENS, Olev ,  LAND, Raul ,  PRIIDEL, Eiko ,  ANNUS, Paul

IPC: A61B5/0205 ,  A61B5/05 ,  A61B5/277 ,  A61B5/053 ,  A61B5/00 ,  A61B5/6802

Abstract: A wearable bio-electromagnetic sensor comprises an electronic unit containing a means for generating electrical current, and an electromagnetic interface for transforming the generated electrical current into an electromagnetic field applied to a vascularized body tissue. Next, the wearable bio-electromagnetic sensor contains a means for analog signal processing an electrical response of cardiopulmonary system to the applied electromagnetic field. After analog processing of said electrical response, a digital post-processing of digitized electrical response takes place in a means for digital signal processing, embedded into said electronic unit of the wearable bio-electromagnetic sensor. As a result of analog and digital signal processing, an information is extracted, which makes possible medical diagnosing of both, pulmonary and cardiovascular system, separately or simultaneously. The used work principle is following: the applied electromagnetic field induces electrical current inside the body tissue, electrical impedance to which changes correspondingly to breathing and heart beating. Said electrical impedance of varies during every breathing cycle correspondingly to oxygen transporting through arteries and oxygen uptake by capillaries, also due to biomechanical enlargement and narrowing of arteries correspondingly to blood pressure variations.