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A new human middle ear model for the biomechanical evaluation of a prosthesis for the ossicular chain reconstruction

机译:一种新的人体中耳模型,用于制作骨架重建假体的生物力学评价

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摘要

The middle ear is a sophisticated mechanism which transmits sound waves from the outer ear to the inner ear, while it amplifies and filters the sound waves depending on their frequency. However, the sound path can be broken due to traumas, infections, ossification or alteration. In this case, the surgeons reconstruct the sound path with an implant, mostly with passive titanium prostheses. Developers need an environment to validate these implants. The current environment for this purpose is the human temporal bone from cadavers, which does not provide reproducible conditions for experiments. In this paper, we present a new anatomical human middle ear model. We have segmented the essential functional elements from μCT-data (micro computed tomography). We have reproduced the bony structures with a 3D printer and the soft tissues with silicone rubber casting. Our experiments show that the model transmits the sound waves from the tympanic membrane to the inner ear as in a human middle ear. We also present that the articulated ossicles are suitable to reconstruct the ossicular chain with different types of passive prostheses.
机译:中耳是一种复杂的机构,其从外耳向内耳传输声波,同时它根据其频率放大并滤除声波。然而,由于创伤,感染,骨化或改变,声道可以损坏。在这种情况下,外科医生用植入物重建声道,主要是具有被动钛假体的植入物。开发人员需要一个环境来验证这些植入物。目前的环境是来自尸体的人颞骨,其不提供实验的可再现条件。在本文中,我们提出了一种新的解剖人类中耳模型。我们已经将基本功能元素分段为μct-data(微计算机断层扫描)。我们已经用3D打印机和硅橡胶铸造的软组织再现了骨骼结构。我们的实验表明,该模型将来自鼓膜膜的声波作为人类中耳中的内耳传输到内耳。我们还表明铰接骨泡适合于用不同类型的无源假体重建骨骨链。

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