Current pulse circuit embedded with nerve stimulator

A current pulse, nerve stimulation technology, applied in artificial respiration, physical therapy and other directions, can solve the problems of affecting battery life and treatment effect, reducing circuit conversion efficiency, output current waveform distortion, etc., to achieve convenient control, improve battery life, The effect of stable current output
CN102727995AActive Publication Date: 2012-10-17CHANGZHOU RUISHENAN MEDICAL DEVICES
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHANGZHOU RUISHENAN MEDICAL DEVICES
Publication Date
2012-10-17

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Abstract

The invention discloses a current pulse circuit embedded with a nerve stimulator. The current pulse circuit comprises a microprocessor, a first inductor, a first diode, a second resistor, a fifth resistor, a filter capacitor, a boost-buck DC-DC (direct-current-direct-current) chip, a first circuit output terminal and a second circuit output terminal, wherein the first circuit output terminal is grounded through the second resistor and the fifth resistor; the boost-buck DC-DC chip comprises an error amplifier, a PWM (pulse-width modulation) comparator, a switching tube, an SR trigger and an oscillator; the common terminal of the second resistor and the fifth resistor is connected into the first inverting input terminal of the error amplifier; the non-inverting input and output terminals of the error amplifier are respectively connected with reference voltage and the inverting input terminal of the PWM comparator; the oscillation output of the oscillator is connected with the non-inverting input terminal of the PWM comparator; the oscillator outputs a switching signal to the terminal S of the SR trigger; the output terminal of the PWM comparator is connected with the terminal R of the SR trigger; and the output terminal Q of the SR trigger is connected with the control terminal of the switching tube.
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Description

technical field

[0001] The invention relates to the field of implanted nerve stimulators, in particular to a current pulse circuit of the implanted nerve stimulator. Background technique

[0002] Implantable neurostimulation is a method that stimulates target nerves with a certain degree of current pulses to adjust or restore brain, nerve or muscle functions and relieve symptoms. At present, most neurostimulators use non-inductive DCDC circuits to convert the battery voltage and then output stimulation pulse signals. However, when the gastric electric stimulator requires high-dose stimulation, the current pulse stimulation generating circuit with a general structure will encounter some problems, which are difficult to overcome. These problems are as follows: due to the position of surgically implanted electrodes and the differences in human body constitution, there will be differences in the equivalent impedance between the output electrodes of the neurostimulator after sur...

Claims

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