Search academic texts

Information × Registration Number 0225U003746, (0124U000873) , R & D reports Title The genesis of mine-explosive injuries and the development of a mobile electroacoustic device for the diagnosis and treatment of hearing damage of military personnel popup.stage_title Моделювання зовнішнього, середнього та внутрішнього вуха методами електроакустичних аналогій та скінченних елементів з врахуванням пошкоджень внаслідок МВТ. Head Naida Serhii A., Доктор технічних наук Registration Date 11-08-2025 Organization National Technical University of Ukraine «Igor Sikorsky Kyiv Polytechnic Institute» popup.description1 Development of a prototype of a mobile electroacoustic device for complex diagnosis and treatment of the hearing of military personnel, which allows you to accurately differentiate in real time the place of hearing loss - is it the middle or inner ear. Determining the normal parameters of the middle ear of a person is carried out by measuring the coefficient of reflection of the sound pulse from the eardrum as a function of frequency, transforming this coefficient into a quantitative individual parameter of the norm. Determination of the working capacity of the inner ear is carried out by impacting the curl with amplitude-modulated focused ultrasound. After conducting differential diagnosis, if necessary, effective surgical treatment is carried out by the method of tympanoplasty, in which the selection of the material of the ossicular prosthesis is carried out in such a way that the value of the quantitative individual parameter of the norm, which is determined in the express mode with the help of the developed apparatus, is equal to one. popup.description2  The reduced equivalent circuit of the middle ear, which represents two connected circuits, is developed by the method of electromechanical analogies. Based on the developed model, the principle of sound reflection from the eardrum is formulated and a formula for the parameter of the norm of the state of the middle ear is obtained, which both form the fundamentals for the operation of a mobile electroacoustic device for the diagnosis and treatment of hearing damage in military personnel. The values of the partial frequencies of the middle ear are established, the knowledge of which makes it possible to predict the frequency response of the human outer and middle ear in the case of various pathologies due to a more accurate analysis of the hearing system, as well as to investigate the features of damage to the human outer and middle ear as a result of a mine-explosive injury. Models of the human outer and middle ear were created using the Comsol Multyphisics software, which considers the continuity of the environment, the nature of the movement of elements, and their mechanical parameters, such as density, Young's modulus, Poisson's ratio, their interaction with each other, and their dimensions. A model of the human inner ear in the form of a long line is developed. An expression for the impulse function of the sound conduction system of the human ear has been obtained. The use of the impulse function gives a new objective invariant parameter of the norm of the inner ear, which together with the parameter of the norm of the middle ear allows to carry out differential diagnosis of the ear condition. In the case when the auditory ossicles are damaged because of a mine-explosive trauma, an ossicular implant is used to replace them. It has been established that the mass of the ossicular implant must be selected so that the value of the parameter of the norm of the middle ear is equal to unity. Product Description popup.authors Didkovskyi Vitalii S. Drozdenko Oleksandr I. Zheliaskova Tetiana M. Onykiienko Yurii O. Popovych Pavlo V. popup.nrat_date 2025-08-11 Close