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疼痛是很多疾病的一种自觉症状。疼痛的有无和轻重,过去只靠病人自己的诉说、缺乏客观的指针。现在,我们制作出一种测痛计,能够准确的客观的反映出疼痛的有无,范围及轻重。我们在临床上对162例主诉有疼痛的病人进行实验,符合率达99%。一、线路:见图。二、原理:1.测痛时,把开关1放在中间一档(接3伏电压),开关2放在左面一档(接100 K的电位器),此时电路为(没有并联人体电阻):电压=3伏,电阻=100千欧姆,电流=3/(100)=0.03微安。
Pain is a symptom of many diseases. The presence and severity of pain, the past only by the patient’s own complaints, the lack of an objective pointer. Now, we make a painful measure that accurately and objectively reflects the presence, extent and severity of the pain. We conducted clinical trials of 162 patients complained of pain, with a rate of 99%. First, the line: see figure. Second, the principle: 1. Pain when the switch 1 on the middle of a file (then 3 volts), switch 2 on the left of a file (then 100 K potentiometer), this circuit is (no parallel body resistance ): Voltage = 3 volts, resistance = 100 kilohms, current = 3 / (100) = 0.03 microamps.