Tange R A, Zuidema T, vd Berg R, Dreschler W A
Academical Medical Centre, Clinical Audiology Departments, Amsterdam, The Netherlands.
ORL J Otorhinolaryngol Relat Spec. 1994 Mar-Apr;56(2):78-82. doi: 10.1159/000276614.
Patients with large conductive hearing loss do not always tolerate conventional air conduction or bone conduction hearing aids. They can be helped sometimes with an implantable bone conductor device. The so-called bone-anchored hearing aid consists of an implantable titanium skull screw and an external sound processor unit. In this study, we report our experiences with 10 subjects who have been implanted with the recently improved Audiant screw-type XA-II and their experience with the newly developed behind-the-ear (BTE) external processor, the at-the-ear processor and the body-level device with a new transducer with variable magnetic strength. Evaluation shows that the Audiant XA-II system is well accepted and does not show any tissue reaction. The BTE processor is an important new complement to the Audiant system. Furthermore, the system is effective in compensating the air-bone gap almost completely at the higher frequencies but only partially at the lower ones. The maximum output appears to limit its feasibility for perceptive losses beyond 20 dB (PTA). When this system is utilized for proper hearing loss, however, the system usually improves speech intelligibility both in quiet and in background noise. When the system is prescribed for hearing losses with a moderate or large perceptive component, the system is ineffective and leads to negative evaluations.
患有严重传导性听力损失的患者并不总是能耐受传统的气导或骨导助听器。有时可通过植入式骨传导装置来帮助他们。所谓的骨锚式助听器由一个可植入的钛质颅骨螺钉和一个外部声音处理器单元组成。在本研究中，我们报告了10名植入了最近改进的奥迪安XA-II型螺钉以及他们使用新开发的耳后（BTE）外部处理器、耳上处理器和带有可变磁场强度新换能器的体级装置的经验。评估表明，奥迪安XA-II系统被广泛接受且未显示出任何组织反应。BTE处理器是奥迪安系统的一项重要新补充。此外，该系统在较高频率下几乎能完全补偿气骨差距，但在较低频率下只能部分补偿。最大输出似乎限制了其对超过20 dB（PTA）的感音性损失的可行性。然而，当该系统用于合适的听力损失时，通常能在安静和背景噪声环境中提高言语清晰度。当该系统用于具有中度或大量感音成分的听力损失时，该系统无效并导致负面评价。
