Vallejo Luis A, Manzano María T, Hidalgo Antonio, Hernández Alberto, Sabas Juan, Lara Hugo, Gil-Carcedo Elisa, Herrero David
Cátedra de Otorrinolaringología, Universidad de Valladolid, Valladolid, España; Servicio de Otorrinolaringología, Hospital Universitario Río Hortega, Valladolid, España; Instituto de Neurociencias de Castilla y León (INCyL), Valladolid, España.
Centro para la Investigación y el Desarrollo en Automoción (CIDAUT) , Valladolid, España.
Acta Otorrinolaringol Esp. 2017 Mar-Apr;68(2):69-79. doi: 10.1016/j.otorri.2016.03.001. Epub 2016 May 17.
One of the problems with total ossicular replacement prostheses is their stability. Prosthesis dislocations and extrusions are common in middle ear surgery. This is due to variations in endo-tympanic pressure as well as design defects. The design of this new prosthesis reduces this problem by being joined directly to the malleus handle. The aim of this study is to confirm adequate acoustic-mechanical behaviour in fresh cadaver middle ear of a new total ossicular replacement prosthesis, designed using the finite elements method.
Using the doppler vibrometer laser, we analysed the acoustic-mechanical behaviour of a new total ossicular replacement prosthesis in the human middle ear using 10 temporal bones from fresh cadavers.
The transfer function of the ears in which we implanted the new prosthesis was superimposed over the non-manipulated ear. This suggests optimum acoustic-mechanical behaviour.
The titanium prosthesis analysed in this study demonstrated optimum acoustic-mechanical behaviour. Together with its ease of implantation and post-surgical stability, these factors make it a prosthesis to be kept in mind in ossicular reconstruction.
全听骨置换假体存在的问题之一是其稳定性。假体脱位和脱出在中耳手术中很常见。这是由于鼓室内压力变化以及设计缺陷所致。这种新型假体的设计通过直接与锤骨柄相连减少了这一问题。本研究的目的是证实一种采用有限元方法设计的新型全听骨置换假体在新鲜尸体中耳内具有足够的声学 - 力学性能。
我们使用多普勒激光振动计，对取自10具新鲜尸体颞骨的人中耳内一种新型全听骨置换假体的声学 - 力学性能进行了分析。
植入新型假体的耳朵的传递函数与未处理的耳朵的传递函数叠加。这表明具有最佳的声学 - 力学性能。
本研究中分析的钛质假体表现出最佳的声学 - 力学性能。连同其易于植入和术后稳定性，这些因素使其成为听骨重建中值得考虑的一种假体。
