BINARY LEVEL CHARGE PULSE DEVICE WHICH EASILY DETERMINES POSITION OF NERVE DURING PERIPHERAL NERVE BLOCK TREATMENT

摘要

PROBLEM TO BE SOLVED: To make it possible to use the device under a condition under which a patient has an embedment type electronic device and to execute sterilization inexpensively and sufficiently with a small size by providing the device with an electric stimulus generator circuit sufficient for charges to induce selected currents between the distal ends of a conductive layer and a needle cannula and the currents to induce an end shrinkage reaction at the time of positioning the needle to the patient's tissues. ;SOLUTION: An anesthesist or nurse anesthesist inserts the obliquely cut distal front end 24 of the needle cannula 20 made of a stainless steel into the patient's target nerve. Then, the anesthesist operates the on/off switch of a stimulator 14 so as to generate specified current pulses of low electric energy. The correct function of an electric stereotaxic apparatus 10 is checked that a flashing LED 50 generates the pulses of light simultaneously with the respective pulses of the energy. The high charge pulses generate the observable muscular simple shrinkage in a superficial position after penetration of the skin with the conductive layer of gold and may be observed at nearly coincident intervals.;COPYRIGHT: (C)1998,JPO