Current pulse amplitude calibration method applied to DBS and automatic calibration acquisition circuit

Abstract

The invention provides a current pulse amplitude calibration method applied to a DBS and an automatic calibration acquisition circuit. The automatic calibration acquisition circuit in a deep brain stimulator DBS circuit is used for acquiring a current pulse amplitude; and through a current pulse amplitude calibration method, according to the acquired actual output current pulse amplitude, an inputvalue of DAC is continuously adjusted so that the actual output current pulse amplitude corresponding to each current is equal to a theoretical output current pulse amplitude or approaches the theoretical output current pulse amplitude within a tolerance range. The calibrated actual output current pulse amplitude better meets an output requirement of the deep brain stimulator DBS circuit, and output precision is relatively high.

Description

technical field [0001] The invention relates to the technical field of implantable deep brain electrical stimulators, in particular to a current pulse amplitude calibration method and an automatic calibration acquisition circuit applied in DBS. Background technique [0002] Deep brain electrical stimulator (DBS), as an implanted neurostimulator, emits weak electrical pulses through the pulse generator implanted in the body, stimulates the relevant nerve nuclei in the brain that control movement, and inhibits abnormal brain nerve signals that cause disease symptoms, thereby eliminating Symptoms of the disease, allowing the patient to regain the ability to move freely and take care of themselves. [0003] There is a one-to-one correspondence between the DAC input value and the output current pulse amplitude of the DBS circuit of the deep brain electrical stimulator, but in actual use, the actual output current pulse amplitude of the DBS is often inconsistent with the theoretic...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a current pulse amplitude calibration method and an automatic calibration acquisition circuit applied in DBS to solve the problem in the prior art that the current pulse amplitude actually output by the DBS cannot be calibrated, so that the actual output current pulse amplitude The value is neither close to the theoretical output current pulse amplitude, nor equal to the theoretical output current pulse amplitude, which does not meet the output requirements of DBS, and the output accuracy is low.

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