Class D amplifier driven external deep brain stimulator

Abstract

The present invention relates to deep brain stimulator and belongs to the field of medical equipment. The class D amplifier driven external deep brain stimulator includes one in vivo signal stimulating part, one in vitro signal generating and controlling part, and one signal coupling module for signal coupling between the two foregoing parts. The in vivo signal stimulating part includes one pair of stimulating electrodes; and the in vitro signal generating and controlling part includes one class D amplifier and pulse driver module, one micro controller module. The pulse signal the micro controller module generates is amplified in the class D amplifier and pulse driver module and introduced with the signal coupling module to body to excite the stimulating electrode pair. The present invention has the advantages of low power consumption and high efficiency. The in vivo inducing output coil and stimulating electrodes are implanted via once operation and need no power source.

Description

technical field [0001] The invention relates to a deep brain stimulator, which belongs to the field of medical equipment. technical background [0002] Deep brain stimulator is commonly known as brain pacemaker, and its English name is Deep Brain Stimulator, or DBS for short. DBS has been widely used in the treatment of movement disorders, and is currently the most promising method for the treatment of Parkinson's Disease (PD). [0003] Parkinson's disease (Parkinson's Disease, PD) is a common middle-aged and elderly nervous system degenerative disease, which usually occurs after the age of 60. and other symptoms. In my country, there are more than 1.7 million patients with Parkinson's disease among the elderly over 55 years old. The prevalence rate is close to that of European and American countries, and the disease shows a trend of younger patients. [0004] Currently, treatments for Parkinson's disease are under constant research. Traditional drug treatment is mainly ...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of brain pacemaker is that the power supply battery of the DBS implanted in the human body cannot replenish electric energy from the outside, and can only be used once, and its life span is 5 to 8 years.

Once the battery power is exhausted, the patient can only undergo surgery again and take out the DBS for replacement, which not only increases the pain of the patient, but also increases its financial burden

Moreover, foreign bodies implanted in multiple places in the body can easily cause skin ulceration

In addition, because Medtronic occupies a monopoly position in brain pacemakers, the price of its products is unaffordable for Chinese patients

[0006] The external deep brain stimulator can overcome the above shortcomings, remove the various components of the deep brain stimulator out of the body to the greatest extent, reduce the wound area of ​​the patient, and fundamentally solve the problem of frequent battery replacement in current products, but the use of bipolar transistors Driven circuits still suffer from inefficiencies

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