Burovikhin D, Dalhoff E, Wagner A, Schneider F, Lauxmann M
Reutlingen Research Institute, Reutlingen University, Alteburgstr. 150, Reutlingen 72762, Germany.
Department of Otolaryngology, Head, and Neck Surgery, Eberhard Karls University of Tübingen, Elfriede-Aulhorn-Strasse 5, Tübingen 72076, Germany.
J Biomech Eng. 2023 Feb 1;145(2). doi: 10.1115/1.4055237.
The hearing contact lens® (HCL) is a new type of hearing aid devices. One of its main components is a piezo-electric actuator. In order to evaluate and maximize the HCL's performance, a model of the HCL coupled to a middle-ear model was developed using finite element approach. The model was validated step by step starting with the HCL only. To validate the HCL model, vibrational measurements on the HCL were performed using a laser-doppler-vibrometer (LDV). Then, a silicone cap was placed onto the HCL to provide an interface between the HCL and the tympanic membrane of the middle-ear model, and additional LDV measurements on temporal bones were performed to validate the coupled model that was used to evaluate the equivalent sound pressure of the HCL. Moreover, a de-eper insight was gained into the contact between the HCL and tympanic membrane and its effects on the HCL performance. The model can be used to investigate the sensitivity of geometrical and material parameters with respect to performance measures of the HCL and evaluate the feedback behavior.
听力隐形眼镜®（HCL）是一种新型的助听器设备。其主要部件之一是压电致动器。为了评估并最大化HCL的性能，采用有限元方法开发了一个与中耳模型耦合的HCL模型。该模型从仅包含HCL开始逐步进行验证。为了验证HCL模型，使用激光多普勒振动计（LDV）对HCL进行了振动测量。然后，在HCL上放置一个硅胶帽，以在HCL与中耳模型的鼓膜之间提供一个界面，并对颞骨进行了额外的LDV测量，以验证用于评估HCL等效声压的耦合模型。此外，还深入了解了HCL与鼓膜之间的接触及其对HCL性能的影响。该模型可用于研究几何和材料参数对HCL性能指标的敏感性，并评估反馈行为。
