| 摘要 |
<p>There is disclosed a current perception threshold device using a stepped square wave current for bio-electric stimulation of nerve groups, and a method of use and operation of the device. A step current is preset as a percentage of a maximum peak stimulus current, which flows through a patients skin. As an intensity of the maximum stimulus current is varied, the stair step current varies as a percentage of the intensity of the stimulus current. However, if the stimulus current drops to a user set or preset value of stair step current, the current flowing through the patient's skin is maintained at the set/preset value, and not allowed to go below that value. This avoids the current falling below a cutaneous electrical resistance threshold (CERT) of the patient's skin, at which current conduction ceases. <IMAGE></p> |
