| 摘要 |
A self-contained, portable, pain blocking bandage has a pulse generator 48, 50, 52 which applies repetitive pulses to an output stage 58 via a pulse buffer and shaper 54, the output stage including a positive feedback circuit 66, 68 which causes the patient to receive a burst 78 of multiple pulses for each pulse produced by the pulse generator 48, 50, 52. Adjustment of a resistor 66 in the feedback circuit varies the number of pulses in each burst. The output amplitude is selected by a potentiometer 74 and is indicated to the patient by a piezoelectric audio transducer 88. As the bandage is placed on the skin a switch 18 is actuated so that a transistor 46 turns on to apply power to the pulse generator and following circuit stages. <IMAGE> |
