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

Abstract

The invention provides an open-circuit detecting module and an open-circuit detecting method for a nerve stimulator. The nerve stimulator comprises a stimulation source, a control module and a stimulation access. The open-circuit detecting module comprises a voltage comparator and a sampling resistor arranged on the stimulation access, wherein the voltage comparator is provided with a first inputend and a second input end. The open-circuit detecting module also comprises a first wire and a second wire which connect two ends of the sampling resistor to the first input end and the second inputend respectively, and a first switch and a second switch are arranged on the first wire and the second wire respectively. The open-circuit detecting module acquires and compares voltage values at twoends of the sampling resistor on a certain stimulation access through the voltage comparator so as to achieve open-circuit detection of the stimulation circuit. The open-circuit detecting module is simple in structure, can achieve open-circuit detection of the stimulation access and can also prevent the phenomenon that part of multiple stimulation accesses is invalid, accordingly voltage abnormityof other stimulation accesses is caused and a treatment effect is affected.

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 treatment. effect, even damage to human tissue

Therefore, in order to avoid the above-mentioned problems, current-mode neurostimulators are currently used, and each stimulation source is only connected to one stimulation pathway at most, which makes it difficult to achieve satisfactory therapeutic effects.

Images