Yamada A, Fuse M, Aoyagi T, Hosaka H, Toma H, Yanagisawa H
Health Care Center of Tokyo Science University, Japan.
Int J Artif Organs. 1994 Mar;17(3):146-50.
The object of this work was to develop a monitoring device for measuring the volume of urine in the bladder to signal, in advance, the need to urinate and thus help prevent urinary incontinence. A high-frequency electric current of 50 KHz transmitter was applied to a pair of terminals placed on the surface of a human body. The constant current was 2mA (p-p). A pair of voltage electrodes was placed in the path of the electric current to pick up high-frequency voltage signals. The best position for current electrodes was found to be on the surface of both femoral joints. Positioning the voltage electrode above the bladder on the lower abdomen was most efficient for detecting the volume of urine. New current electrodes sutured onto underpants were fitted on the surface above the femoral joints, which did not shift in the case of movement by the subjects. The reproducibility and stability were remarkably good with this electrode. The alarm level which foretold both maximum storage volume and maximum desire to void was examined. After that, when the alarm level was set within the range of impedance charge, 60% to 70%, the possibility of prediction of urination exists.
这项工作的目的是开发一种监测装置，用于测量膀胱中的尿量，以便提前发出排尿需求信号，从而有助于预防尿失禁。将一个50kHz发射器的高频电流施加到放置在人体表面的一对电极上。恒定电流为2mA（峰-峰值）。在电流路径中放置一对电压电极，以拾取高频电压信号。发现电流电极的最佳位置是在两个股骨关节的表面。将电压电极放置在下腹部膀胱上方，对于检测尿量最为有效。缝在内裤上的新型电流电极安装在股骨关节上方的表面，在受试者移动时不会移位。使用这种电极，重现性和稳定性非常好。研究了预示最大存储量和最大排尿欲望的警报级别。此后，当警报级别设置在阻抗变化范围的60%至70%内时，存在预测排尿的可能性。
