ULTRASONIC AUDILE TESTER Russian patent published in 2005 - IPC

FIELD: medical equipment.

SUBSTANCE: ultrasonic audile tester can be used for diagnosing different damages of hearing in hospitals and polyclinics as well as research and scientific institutions. Audile tester has ultrasonic frequency oscillator and clock-pulse oscillator both connected with electronic switch, power amplifier and piezoelectric irradiator, control board provided with buttons for increasing and reducing radiation power, button for adjusting speed of power control and digital segment indicators, additional clock-pulse oscillator, commutation unit, bandpass filter, control unit, pulse counter, decoder, discretely controlled amplification factor amplifier and power availability on radiator control unit. Button for changing speed of power control is connected with control input of commutation unit which has first input to be connected with second output of clock-pulse oscillator and second input to be connected with output of additional clock-pulse oscillator. Output of commutation unit as well as buttons for increasing and reducing radiation power are connected with control unit which has output to be connected with pulse counter. First output of pulse counter is connected with digital indicators via decoder and second output of pulse counter is connected with control input of discretely controlled amplification factor amplifier which has input to be connected with output of electronic switch via bandpass filter. Output of the amplifier is connected with input of power amplifier. Output of power amplifier is connected with piezoelectric irradiator via power availability on switch control unit. Diagnosing of damage in hearing is conducted due to introducing or juxtaposing results of testing of level of perception of ultrasound by patient.

EFFECT: improved truth of diagnosing.

3 cl, 1 dwg