TOUCH-ACTIVATED APPARATUS AND METHOD OF MEASURING A PHYSIOLOGICAL PARAMETER Russian patent published in 2021 - IPC A61B5/22 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine, namely to a physiological touch activated apparatus for measuring a physiological parameter and controlling the location of a reading surface relative to the sensing surface of human tissue and to a method of adjusting a physiological touch activated apparatus to optimize placement of the reading surface relative to the sensing surface of human tissue. The apparatus comprises a reading surface, an electroactive polymer structure, a controller. The polymer structure is configured to deform in response to application of an electrical signal to control placement of the reading surface. An electrical signal is applied to the electroactive polymer structure during implementation of the method. The signal is comprised of a superimposed impact signal and a sensing alternate current signal. The impact signal is intended to stimulate deformation of the electroactive polymer structure to control the reading surface to apply impact force to the sensing surface. The reading alternate current signal is intended to ensure measurement of the pressure applied to the sensing surface and has an alternate current frequency within the harmonic of the resonant or anti-resonant frequency of the electroactive polymer structure. The impedance of the electroactive polymer structure in time is measured to measure and indicate the return force affecting the electroactive polymer structure from the side of the sensing surface in time. The value of the applied impact signal is adjusted depending on the measured impedance and/or return force to adjust the placement of the reading surface relative to the sensing surface.

EFFECT: pressure at the contact point or distance between the physiological parameter sensor and the body of the user are maintained at a constant level allowing to compensate for movement artifacts and to increase the accuracy of the obtained measurement results.

16 cl, 14 dwg