Electrical stimulation protection device

Abstract

The invention discloses a electrical stimulation protection device. When a current flowing through a load exceeds a certain current value and a time value, power supply is cut off, a state is locked and output of denervated electrical stimulation is stopped. The device comprises: a low voltage power supply circuit providing a stable working voltage, a high voltage side current detection amplifier, a comparator, a counter, wherein the high voltage side current detection amplifier is used to accurately collect the current flowed through the load, convert the current into a voltage signal and then output the signal; the comparator is used to compare the load current detected by the high voltage side current detection amplifier with a set reference current and the output of the comparator can make the counter perform counting or resetting; the counter is used to count the output signal of an oscillator. When counting state duration exceeds a set value, a counting value of the counter can be overflowed. After that, a output terminal state of the counter is overturned. A path switch is controlled into a cut-off state. A high voltage module stops supplying power and locks the state. The oscillator provides a stable clock signal for the counter.

Description

Technical field [0001] The invention relates to an electrical stimulation protection device, in particular to an electrical stimulation protection device for neuromuscular training under a medical denervation state. Background technique [0002] Electrical stimulation has been widely used in clinical medicine for many years. The related parameters of electrical stimulation: stimulation intensity (current intensity, pulse width), stimulation duration, and the rate of change of stimulation intensity with respect to time. Excitable tissues and cells do not affect any Electrical stimulation of various degrees can show excitement or action potentials. Stimulation can generally refer to any changes in the environmental factors in which cells are located, that is, changes in physical and chemical factors in various forms of energy, which may stimulate cells, but experiments have shown that stimulation must cause tissue cells to excite, and the following three parameters must be Reach a...

AI Technical Summary

Problems solved by technology

Denervation electrical stimulation is specially used to solve the neuromuscular tissue excitation problem under the conditions of nerve paralysis, nerve injury, and neurodegeneration. It requires greater stimulation energy, which is a problem that cannot be solved by general electrical stimulation technology, which creates a very Acute problem: patient safety protection, under the working conditions of high-power high-voltage modules (high voltage often reaches DC 150V or more), if the control circuit is improper (or damaged), the patient will be directly shocked for a long time, which may endanger the patient in severe cases life

Generally, the premise of effective electric stimulation current overload protection is: the control software system works normally, the D / A converter works normally, and the constant current control switch tube works normally, but in fact, it is very common for these three parts to work abnormally, so it will be greatly affected reduce the reliability of its safety features

Images