腹内压无创检测的初步研究

目的 提出了一种新的无创检测腹内压的方法及系统设计.方法 将压力传感器（本文采用YH-4）与位移传感器（本文采用滑动变阻器）进行合理组装,使得压力与位移之间呈线性关系.当该装置作用于测试对象外腹部时,将产生一个压力,称之为外部腹压,并相应产生一定的位移.将直接法测得的腹内压与所测外部腹压间建立起数学关系,从而腹内压可由无创测量的外部腹压进行计算间接得到.结果 通过家兔的气腹实验对该方法进行了验证,初步结果表明腹内压与外部腹压间存在线性关系.结论 动物实验证明了该方法的可行性,同时为下一步的临床实验提供了科学依据.

A Preliminary Study on Non-invasive Measurement of Intra-abdominal Pressure

Objective To present a new method and design of an instrument for measuring intra-abdominal pressure (IAP) non-invasively. Method A pressure sensor (YH-4) and a displacement sensor (sliding rheostat) were assembled into a probe so that they work in a linear mode. When this assembled instrument probe acts on the abdominal wall of a subject, a pressure as called the external abdominal pressure (EAP), and a corresponding displacement were detected. A relationship was established mathematically between the IAP measured by non-invasive and invasive method, and IAP was calculated by EAP measurement indirectly non-invasively. Result The method was testified by animal experiment in rabbits. And the preliminary results indicated that linear relation between EAP and IAP was obtained. Conclusion Feasibility of the new method is validated by animal experiment. It provides scientific evidence for further clinical experiment.