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目的研究用于植入式医疗仪器的基于脉冲位置调制(PPM)方式的经皮无线双向通信解决方案。方法系统由植入体内的医疗仪器通信电路,体外应用程控器和掌上电脑PDA组成,植入体内的医疗仪器通信电路和程控器间的无线双向通信采用PPM脉冲调制方式。结果实现了植入体内的医疗仪器通信电路(钛壳封闭)和体外程控器间2英寸以上的无线通信距离,同时位置容差性较好。结论将PPM调制方式成功地应用于经皮无线通信系统,与ASK等调制方式相比,降低了植入体内的医疗仪器通信电路的功耗,通过天线共用设计减小了植入体内的医疗仪器通信电路体积。
Objective To study a percutaneous wireless two-way communication solution based on pulse position modulation (PPM) for implantable medical devices. Methods The system consists of a medical device communication circuit, an external application programmer and a palmtop PDA. The bi-directional communication between the medical device communication circuit and the programmable controller implanted in the body adopts PPM pulse modulation. As a result, a wireless communication distance of more than 2 inches between the medical device communication circuit (titanium shell closed) implanted in the body and the remote program controller was realized, and the position tolerance was better. Conclusion The successful application of PPM modulation in percutaneous wireless communication system can reduce the power consumption of the medical device communication circuit implanted in the body compared with the modulation method such as ASK and reduce the implanted medical devices Communication circuit volume.