Stieger Christof, Wäckerlin Daniela, Bernhard Hans, Stahel Andreas, Kompis Martin, Häusler Rudolf, Burger J Jürgen
Department of ENT, Head, Neck and Cranio-Maxillo-Facial Surgery, Inselspital, University of Berne, 3010 Bern, Switzerland.
Comput Biol Med. 2004 Mar;34(2):141-52. doi: 10.1016/S0010-4825(03)00042-8.
A simple, contactless electromagnetic transducer design for implantable hearing aids is investigated. It consists of a coil and a permanent magnet, both of which are intended for implantation in the middle ear. The transducer is modeled and optimized using computer simulations, followed by experimental verification. It is shown that the proposed transducer design can, because of its size and geometry, allow implantation through the external auditory canal, and provide a sufficiently high acoustic output corresponding to approximately 120 dB sound pressure level. It can be optimized to be tolerant of radial displacements between coil and magnet of up to 1 mm.
研究了一种用于植入式助听器的简单、非接触式电磁换能器设计。它由一个线圈和一个永磁体组成，二者都打算植入中耳。使用计算机模拟对该换能器进行建模和优化，随后进行实验验证。结果表明，所提出的换能器设计由于其尺寸和几何形状，能够通过外耳道进行植入，并提供对应于约120分贝声压级的足够高的声输出。它可以被优化以耐受线圈和磁体之间高达1毫米的径向位移。
