| 摘要 |
Ear piece ('otoplastic') (2), particularly for a 'behind-the-ear' hearing aid, includes an opening (6) for projection of sound and at least one aeration opening or vent. Ear piece ('otoplastic') (2), particularly for a 'behind-the-ear' hearing aid, includes an opening (6) for projection of sound and at least one aeration opening or vent. The new feature is that (2) is made as a thin-walled funnel that (a) in the region of greatest width fits exactly in the external auditory meatus; (b) includes (6) in the region of smallest width and (c) in the intermediate region, includes (8). |
