A WEARABLE DEVICE FOR EARLY DIAGNOSIS OF CARDIOPATHY AND/OR CARDIOVASCULAR DISEASES WHICH CAN BE DETERMINED BY HEMODYNAMIC VARIABLES

摘要

A early diagnosis device (100) of cardiopathies in a patient (50) such as a cardiac decompensation and/or cardiovascular diseases comprises a wearable support (1) and a diagnostic unit (5) mounted to the wearable support (1). The diagnostic unit (5) comprises a means for delivering (10) an electric current stimulus (I_i), at a predetermined frequency (f_i) to the patient's body (50) and a means for measuring (20) a thoracic electrical bioimpedance (Z_i), which is adapted to provide a bioelectric impedance signal (Z_i) on the basis of the electric stimulus (Ii) at the predetermined frequency (f_i). The device (100) further comprises an adjustment means (30) for adjusting the frequency (f_i) of the electric stimulus (I_i) in way suitable for transmitting a plurality of electric stimuli (I₁, I₂,... I_n) at respective different frequencies (f₁, f₂, f₃... f_n) and such that the means for measuring (20) detects a corresponding complex bioimpedance signal (Z₁, Z_2, Z₃, Z_n). In addition, the device comprises a memory (35) that is configured to store the complex bioimpedance signals at a first time (t_i), at a second time (t₂) and at an nth time (t_n) and a means for extracting the real part (R₁, R₂, R₃... R_n) of the complex signals for instants (t₁, t₂, t_n), to obtain a respective time chart (C₁, C₂, C_n) of the real part for each frequency. Furthermore, it comprises a means for analysing (40) the time chart (C₁, C₂, C_n) and a means to provide an alarm (46) of cardiac decompensation if a decrease value DR/Dt is higher than a predetermined value DR_o/Dt.