Die Haltbarkeit von Hörgeräten
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The practical duration of readiness of hearing aids
In 108 patients of an average age of 70 years the function of the first hearing aid has been controlled according to DIN-standard 45600 when a new hearing ais was adjusted. After an average time of 7 years rather 25% of the hearing aids came up to the DIN-standard. The others had to be repared or a reparation was impossible. The profit in discrimination with the new hearing aids was about 50%. It has been tried to find out the causes of limited durability of hearing aids by overlooking all facts coming into question.
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