METHOD FOR BLADDER FULLNESS DIAGNOSIS Russian patent published in 2017 - IPC A61N1/00 A61B5/402 A61B5/53 A61B5/20 

FIELD: medicine.

SUBSTANCE: electrodes are applied to the skin in the bladder location area. They are connected to a bioelectric potentials amplifier to obtain two leads which measure bioelectrical activity signals of the bladder walls. Electrocardiograms are recorded simultaneously for signal filtering. The received signals are mathematically processed by normalizing and plotting of bladder and electrocardiogram signals spectra by the Fourier method. The bladder signal is filtered from the electrocardiogram signal by bladder signal spectrum division by the electrocardiogram signal spectrum. Characteristic spectra frequencies are selected from the most active range of 0.7 Hz, 1.5 Hz, 1.7 Hz. The said measurement is performed twice - before and after a water-drinking stress. The characteristic frequencies amplitudes are compared, and bladder fullness is judged by the degree of their increase.

EFFECT: method allows accurate, simple and non-invasive determination of bladder fullness due to the simultaneous recording of bladder wall bioelectrical activity and electrocardiogram signal, followed by bladder signal filtration from the electrocardiogram signal.

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