基于Zigbee通信的植入式神经电刺激系统的研究

Study on implantable neural electrical stimulator based on Zigbee communication

目的:研制一种植入式神经电刺激系统。方法:采用Zigbee通信技术和双相恒流刺激产生技术设计系统,利用Zigbee同步时间唤醒技术实现系统的低功耗设计。结果:系统植入电刺激器和外部控制器之间可以双向无线通信,植入电刺激器的刺激强度、频率、脉宽、极性能够可控输出。结论:系统实现了PCB的一体化集成,功耗低,并且刺激输出波形不会因为人体组织负载阻抗的变化而变化,同时可以减小大电流刺激的疼痛感。

Objoective To design a prototype system of implantable neural electrical stimulator. Methods The prototype system utilized technologies such as Zigbee communication and generation of bi-phase constant current stimulation. Meanwhile, the waking up to work at Zigbee synchronized time realizes low power design of prototype system. Results This prototype system realized the bi-directional wireless communication between the implantable simulator and the external controller. The output of stimulation intensity, pulse width, duration and phase were controllable. Conclusion The prototype system realizes low power and PCB integration, besides, the output of stimulation waveform is not varied with the fluctuation of tissue impedance and relieves pain of big current stimulation.