METHOD OF DIAGNOSING AUDITORY TUBE PATENCY Russian patent published in 2010 - IPC A61B5/12 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, to otorhinolaryngology, to methods of diagnostics, and can be applied for diagnostics of auditory tube patency. Tests are carried out at empty swallow, Toynbee and Valsalva tests; testing sonic sinusoidal signal with frequency 1000-1500 Hz and intensity 85 dB is supplied in external acoustic meatus, and spectrogram of. Tympanic membrane fluctuations are registered by means of laser autodyne method, on which peaks of main tone and harmonics multiple of main tone are registered. After that spectrogram is registered when examined person performs empty swallow, Toynbee test and Valsalva test, and in case if clearly seen peaks of main tone and harmonics of spectrogram change into chaotic while making an empty swallow, auditory tube patency of I degree is diagnosed, and in case of the similar change of spectrogram while performing Toynbee test patency of II degree is diagnosed, in case of similar change of spectrogram while performing Valsalva test, III degree of auditory tube patency is diagnosed, if there are no changes of spectral picture of autodyne signal when testing signal is supplied and all three said tests are performed, auditory tube obstruction is diagnosed.

EFFECT: method represents objective method of evaluating auditory tube patency, more accurate due to very high sensitivity of laser autodyne, used as registration device and absence of impact nose and nasopharynx state on measurements; also method is more simple and convenient as it does not require invasive manipulations ( introduction of catheter or sound conductor into auditory tube)

1 ex, 3 dwg