Electric quantity monitoring method and electric quantity monitoring system for deep brain stimulation

Abstract

The invention discloses an electric quantity monitoring method for deep brain stimulation. The method comprises the steps of obtaining stimulation parameters of the deep brain stimulation, wherein the stimulation parameters comprise amplitude amp, pulse width pw, impedance im and frequency cf; calculating power consumption Cd of the deep brain stimulation through formulas (1) and (2), wherein the formulas (1) and (2) comprise (1), Cd=load theoretical power consumption / efficiency+no-load power consumption, (2), eta(amp)=-0.0007xamp<4 >+0.0178xamp<3 >-0.1590xamp<2 >+0.6172xamp-0.0473, the eta(amp) indicates the efficiency under any amplitude; and displaying the power consumption Cd obtained through calculation to a user. The invention also relates to an electric quantity monitoring method for the deep brain stimulation employing the electric quantity monitoring method.

Description

technical field [0001] The present invention relates to the related technical field of medical devices, in particular, to an implantable medical device (Implantable Medical Device, IMD). Background technique [0002] Brain pacemaker, also known as deep brain stimulation (Deep Brain Stimulation, DBS), is currently an effective technology for the treatment of advanced and drug-refractory movement disorders and mental disorders. Especially in the treatment of Parkinson's disease, the curative effect is remarkable. Recent research results show that brain pacemakers can also be used to treat Alzheimer's disease, obsessive-compulsive disorder, depression and other mental diseases. see figure 1 The implementation device of deep brain stimulation is brain pacemaker, which is a set of implantable microelectronic devices, including pulse generator (IPG), electrodes and extension wires. After the brain pacemaker is stimulated, the pulse generator will generate continuous electrical ...

AI Technical Summary

Problems solved by technology

Inaccurate battery life prediction will lead to premature DBS replacement surgery, resulting in waste of battery and property loss of patients; or late replacement surgery resulting in unplanned downtime, which is detrimental to the treatment effect

For patients with DBS indications, the adjustment of stimulation parameters (amplitude, frequency, pulse width) after surgery is the most important means to ensure the curative effect. Almost every DBS implanter will go through the process of parameter adjustment. It is suitable for typical (commonly used) stimulation parameter combinations, and each adjustment of stimulation parameters will bring about the accumulation of errors, which makes the prediction results very unreliable and cannot be applied clinically

But from a practical point of view, this approximate estimation method can only be used at present, because without considering the impedance, there are more than one million combinations of the three stimulation parameters of amplitude, frequency, and pulse width. There are more than 500,000 combinations, and it is obviously impractical to measure the power consumption under each parameter combination

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