Carver W F
Laryngoscope. 1976 Nov;86(11):1712-3. doi: 10.1288/00005537-197611000-00014.
This paper describes the use of the CROS hearing aid principle on cases of congenital atresia. This young girl has had several operations which attempted to create a canal and tympanum, but the canal persisted in closing. A bone vibrator eyeglass hearing aid was fitted but was largely unsuccessful. Having a 50 db air-conduction loss was handicapping to this youngster, but the usual head worn hearing aid could not be fitted because of the lack of any canal, causing feedback. She refused a body type aid. The solution is this case was a CROS behind-the-ear hearing aid. She enjoys about a 25 db useful gain from this fitting.
本文描述了对先天性耳道闭锁病例使用对侧信号互传（CROS）助听器的原理。这个年轻女孩已经接受了几次手术，试图构建一个耳道和鼓膜，但耳道持续闭合。曾佩戴骨导振动式眼镜助听器，但效果不佳。该青少年存在50分贝的气导听力损失，这对她造成了很大障碍，但由于没有耳道，佩戴常规的头戴式助听器会产生反馈，因此无法佩戴。她拒绝使用体佩式助听器。针对这个病例的解决方案是使用耳背式CROS助听器。通过这种适配，她获得了约25分贝的有效增益。
