消化道肌肉收缩运动及其压力波检测仪

The Muscle Contraction of Digestive Tract and Its Measurement Instrument of Pressure Wave

用生物力学的观点,对上消化道高压带径向运动进行分析,将其分为弹性收缩、挤合和封闭三种运动状态。依据这种理论,对测试上消化道仪器的传感器及信号处理提出比较合理的设计,将压力传感器微型化后,使用液态偶合传递压力波,并将其置于光纤胃镜的头部,从结构上使传感器具有受控伸出和缩入的功能,这样传感器在光纤胃镜直视下,能在各待测点准确定位,测出各待测部位的压力,特别测出了幽门括约肌压力(PSP):正常中国人的PSP=21.8±1.3mmHg。文中详细讨论了有关测量方法,给出了仪器框图、技术关键及数据收集方法。

The contractive motion of the pyloric sphincter and esophageal sphincter may be divided into three phases: the phas of elasticity, of pursing and of enclosure. This conclution has been reached through repealed experiments, conducted under fiber-gastroscope with microtransducer, which has been designed byus. This finding is very useful in the study of muscle contraction both micrecosmically and macrocosmically. As an example the PSP (Pylorjc sphincter pressure) and the LESP (low esophagal sphincter pressure) of many Chiese people have been measured, which broadly tally with the theoretical calculation. In this paper,the muscle contraction of stomach has been physically analysed and some new opinions have also been suggested.The pressure measurement instrument of muscle contraction of digestive tract is discussed and discovered by us.