体外自主反馈式胃起搏装置设计

A design of body surface gastric pacing device with self-feedback

目的提供一种集体表胃电检测、胃蠕动状态分析和判断、体表胃刺激起搏于一体的自主反馈式胃起搏装置设计。方法依据胃电的检测采集，通过信号处理与参数提取形成胃电特征参数，以此判断胃的运动状态并按需要发生不同频率、强度的胃起搏刺激信号。刺激过程中，可实时分析胃电特征参数的变化，修改刺激参数，实现自主反馈模式。结果自主反馈模式在不同的胃运动模拟信号环境中得到实现。结论初步验证实验证明了该自主反馈胃起搏装置工作的有效性，显示了一定的应用前景。

Objective A surface feedback-stimulation gastric-pacing device was designed to extract gastric surface information, determine the status of gastric and surface stimulation. Methods The characteristic parameters of gastric electrical formed by processing signal and extracting parameter. By that, the state of stomach could be confirmed, and stimulus signal of stomach pace-making in different frequency and intensity could be decided as needed. During the processes of the stimulation, the variations of gastric electrical parameters can be analyzed in real-time and the stimulation parameters could be modified to achieve the self-feedback mode. Results Self-feedback model in different gastric motility analog environment could be realized. Conclusion The preliminary validation of experimental results proved the effectiveness of self-feedback of gastric pacing devices and its application prospects in some areas.