Open-circuit detecting module and open-circuit detecting method for nerve stimulator

Abstract

The invention provides an open circuit detection module and an open circuit detection method for a nerve stimulator, and the nerve stimulator includes a stimulation source, a control module and a stimulation path. The open circuit detection module includes a voltage comparator, a sampling resistor arranged on the stimulation path, the voltage comparator has a first input terminal and a second input terminal, and the open circuit detection module also includes a Both ends are respectively connected to the first wire and the second wire of the first input end and the second input end, and the first wire and the second wire are respectively provided with a first switch and a second switch. The open-circuit detection module uses a voltage comparator to collect and compare the voltage values ​​at both ends of a sampling resistor on a stimulation path to realize open-circuit detection of the stimulation circuit. The open-circuit detection module of the present invention has a simple structure, can realize the open-circuit detection of the stimulation pathways, and can avoid abnormal voltages of other stimulation pathways caused by partial failure of multiple stimulation pathways and affect the therapeutic effect.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to an open circuit detection module and an open circuit detection method for a nerve stimulator. Background technique [0002] The nerve stimulator acts on the limb tissue through the pulse current generated by the stimulation source through the electrode, so as to realize the treatment of certain diseases or the recovery of limb function. Existing neurostimulators mostly include stimulation sources, wires and electrodes. Such as figure 1 As shown, for a neurostimulator with multiple stimulation pathways, when one or more stimulation pathways are open, the remaining stimulation pathways maintain the stability of the current, and the voltage increases accordingly. Overstimulation may cause adverse reactions and affect treatment. As a result, even human tissue damage occurs. Therefore, in order to avoid the above-mentioned problems, currently using current-mode neurostimu...

AI Technical Summary

Problems solved by technology

like figure 1 As shown, for a neurostimulator with multiple stimulation pathways, when one or more stimulation pathways are open, the remaining stimulation pathways maintain the stability of the current, and the voltage increases accordingly. Overstimulation may cause adverse reactions and affect trea

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