Analytical method for testing mechanical properties of artificial ossicular

Transmission deafness is mainly caused by the pathologicalchanges of eardrum or ossicular chain. Artificial middle ear has beenapplied in clinical treatment of conductive hearing loss. In the presentaper, an analytical method for testing mechanical properties of artificialossicular was proposed. The relationship between forced vibrationdisplacement of tympanic membrane and activated sound pressure isestablished at the random time t using variation principles based onartificial middle ear structure and its mechanical hypotheses, and thecontrolling vibration equations are derived. Furthermore, the analyticalsolutions of tympanic membrane and artificial ossicular are obtained byseparation of variables and Bessel function. The theoretical results agreewell with the documented experimental data and reflect the mechanism ofsound transmission. Better sound transmission efficiency in artificialmaterial is obtained with smaller density, rather than heavier density. Theproposed analytical method is efficient and convenient for vibrationanalysis of artificial middle ear and helpful for the optimization design ofartificial ossicular.