SIGNAL ADJUSTMENT FOR ELECTROTHERAPY

摘要

Battery-driven stimulators for electrotherapy usually equip with a small battery to generate specified current waveforms applied to human body for stimulation. Such current waveforms can easily get into a saturated status due to high bio-impedance and low battery power. The present disclosure provides a system in which the waveform is adjusted according to feedbacks taken from a patient to reduce or avoid saturation.

主权项

1. A micro current therapy device comprising:
a pulse wave generator configured to generate a pulse waveform signal; a first electrode and a second electrode each in electric communication with the pulse wave generator; an analog-to-digital converter (ADC) in electric communication with the first electrode and the second electrode and configured to measure a voltage between the first electrode and the second electrode when the first electrode and the second electrode are connected to a conductive subject at two separate locations; and a controller comprising a processor, a memory and program code which, when executed by the processor, configures the controller to:
(a) receive the voltage from the ADC as input at a predetermined schedule; and(b) increase the amplitude by a predetermined increase interval if the voltage is lower than a voltage upper limit, or lower the amplitude to a base amplitude level if the voltage is the same as or higher than voltage threshold.