| 摘要 |
FIELD: medicine; ophthalmology. SUBSTANCE: method involves electric stimulation by deep application of a bulk charge for prolonged displacement on ions in the zone of stimulation. The device for visual tract disease treatment by electric stimulation has a high-voltage converter, a pulse sensor, a pulse simulator, a matching unit, a switch, an impulse former, a key, an amplitude adjustment unit, a rectifier, a current-limiting resistor, a pulsation polarity switch, active and passive electrodes, a frequency meter, a mode select unit, buttons (MORE, LESS, START, STOP), a charge setting unit, an indicator, two OR elements, a trigger, a charge meter, a source of reference voltage, a comparator, and a monovibrator. The pulse sensor input is hooked up to the patient. The pulse sensor output is connected to the first input of the switch, and the pulse simulator is connected to the second output of the switch. The switch output is connected to the frequency meter and the first input of the impulse former. The second input of the impulse former is connected to the first output of the mode selector. The second output of the mode select unit is connected to the first input of the pulsation polarity switch. The input of the mode select unit is connected to the first output of the impulse former. The second output of the impulse former is connected to the first input of the key, and the other input of the key is connected to the trigger output, to the first input of the charge setting unit, and to the first input of the first OR element. The outputs of the key and the amplitude adjustment unit are connected to the first and second inputs of the high-voltage converter respectively. The output of the high- voltage converter is connected to the second input of the pulsation polarity switch through the series-connected rectifier and current-limiting resistor. The first and second outputs of the pulsation polarity switch are hooked up to the patient through the active and passive electrodes. The third output of the pulsation polarity switch is connected to the indicator and the first input of the charge meter. The second input of the charge meter is connected to the output of the first OR element. The output of the charge meter and the source of reference voltage are connected to the first and second inputs of the comparator. The output of the comparator is connected to the second inputs of the first OR element and the charge setting unit through the monovibrator. The third and fourth inputs of the charge setting unit are connected to the MORE and LESS buttons respectively. The output of the charge setting unit and the STOP button are connected to the first and second inputs of the second OR element. The output of the second OR element is connected to the first input of the trigger, and the second input of the trigger is connected to the START button. EFFECT: higher treatment efficacy. 6 dwg |
