Hearing aid device wearable in the ear or hearing aid device...

Details Hearing aid device wearable in the ear or hearing aid device... Hearing aid device wearable in the ear or hearing aid device...

2006-07-18

2006-07-18

Le, Huyen (Department: 2646)

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

C381S322000, C381S324000

Reexamination Certificate

active

07079662

ABSTRACT:
Acoustic feedbacks can be caused by the aeration channel (5) that is present in hearing aid devices (2) wearable in the ear or hearing aid devices having an otoplastic wearable in the ear. In order to avoid this, it is provided that the aeration channel be subdivided into at least a first and a second sub-region, whereby the sub-region (5A) that is proximal when the hearing aid device (2) is worn or when the otoplastic is worn comprises a small cross-sectional area and a great length compared to the distal, second sub-region (5B).

REFERENCES:
patent: 4375016 (1983-02-01), Harada
patent: 5832094 (1998-11-01), Le Her
patent: 6339648 (2002-01-01), McIntosh et al.
patent: 6567524 (2003-05-01), Svean et al.
patent: G 90 10 540.0 (1990-10-01), None
patent: 199 43 809 (2001-03-01), None
patent: 2197158 (1988-05-01), None
patent: WO 01/05207 (2001-01-01), None
patent: WO 01/69973 (2001-09-01), None

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