DEVICE FOR ELECTRODIAGNOSIS OF HARD TOOTH TISSUE Russian patent published in 2018 - IPC A61C19/04 A61B5/53 

FIELD: medicine.

SUBSTANCE: invention relates to medical equipment. Device for electrodiagnosis of hard tooth tissues contains active and passive electrodes, a power source and a microprocessor with a display. Device also includes a first switch, the first output of which, via a current-voltage converter, a first amplifier, a first ADC, is connected to the first input of the microprocessor, the second input of which is connected to the output of a second ADC whose input is connected to the output of a second amplifier, the first and second inputs of which are respectively connected to the first and second terminals of the first switch, the second terminal of which is connected to the third terminal of the second switch, the first terminal of which is connected to the output of the current source whose input is connected to the output of the power source and to the input of the voltage source, whose output is connected to the second terminal of the second switch, and the control inputs of the first and second switches are respectively connected to the third and fourth inputs of the microprocessor, connected by a data bus to a PC, wherein the active electrode being connected to the third terminal of the first switch, the fourth terminal of which is connected to the passive electrode, braided shielding of shielded wires of the active and passive electrodes are connected respectively to the outputs of the first and second voltage emitter followers, the inputs of which are respectively connected to the active and passive electrodes, and the active electrode is made in the form of a microsyringe with an electrolyte solution, at the tip of the needle of which a convex meniscus is formed when the needle is soaked in the electrolyte solution.

EFFECT: high accuracy and reliability of measurements and broader functional capabilities.

1 cl, 1 dwg