Intra aural hearing aid

Made:
1978-1981 in Copenhagen
Oticon I II V intra aural hearing aid, by Oticon, Denmark, 1981.
      Full view, white perspex background with reflection.

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Oticon I II V intra aural hearing aid, by Oticon, Denmark, 1981. Full view, white perspex background with reflection.
Science Museum Group Collection
© The Board of Trustees of the Science Museum

Oticon intra aural ('in the ear') hearing aid, model I 11 V, by Oticon, Denmark, 1978-1981.

An intra-aural hearing aid sits in the ear canal rather than externally behind the ear. So successful is the design that it has been copied in recent years for audio earphones. This small hearing aid amplifies sound down the ear canal to the ear drum. This in turn vibrates and passes the sound to the bones of the middle ear, which are called ossicles. These bones vibrate and amplify the sound to pass it to the inner ear, which contains the cochlea. The hairs of the bones in the inner ear send a nerve impulse to the brain.

Details

Category:
Audiology
Object Number:
1981-2249
Materials:
complete, electronic component and plastic
Measurements:
overall: 19 mm x 25 mm x 27 mm, .01kg
type:
hearing aid
taxonomy:
  • furnishing and equipment
  • tools & equipment
credit:
Oticon Ltd.