Manrique Rodríguez Manuel, Girón Laura, Huarte Irujo Alicia
Departamento de Otorrinolaringología, Clínica Universitaria de Navarra, Pamplona, Navarra, España.
Acta Otorrinolaringol Esp. 2008 Nov;59 Suppl 1:10-3.
Active middle ear implants are classified as piezoelectric implants, which use the properties of piezoelectric materials. There are two types of piezoelectric implants: monomorphic and dimorphic; electromagnetic transduction uses a magnet, usually a rare earth magnet (e.g. samarium cobalt) and an energizing coil. This magnetic field causes the magnet to vibrate, which in turn, through the tympanic-ossicular chain, causes movement of the cochlear fluids. Electromechanical transduction is a variation of electromagnetic transduction.
有源中耳植入物被归类为压电植入物，其利用压电材料的特性。压电植入物有两种类型：单态和双态；电磁转换使用一块磁体，通常是稀土磁体（如钐钴磁体）和一个激励线圈。这个磁场使磁体振动，进而通过鼓膜 - 听骨链引起耳蜗内液体的流动。机电转换是电磁转换的一种变体。
