Hearing aid having gel or paste transmission means communcative

Details Hearing aid having gel or paste transmission means communcative Hearing aid having gel or paste transmission means communcative

1991-10-24

1994-06-07

Kamm, William E.

Surgery

Surgically implanted vibratory hearing aid

H04R 2500

Patent

active

053185021

ABSTRACT:
A hearing aid (100) is provided for surgically implanting in the ear of a subject. A gel or paste filled tube (142) is positioned between an orifice of the cochlea and a subcutaneous amplifier (200). A microphone (122) converts sound waves outside the subject into electrical signals which are amplified by the amplifier and are converted back into amplified mechanical motion by a transducer means (124). The amplified mechanical motion is transmitted through the tube by the gel or paste to the cochlea bypassing the outer and middle ears. The gel or paste and dimensions of the tube are selected to substantially match the acoustic impedance of the cochlea at the distal end of the tube.

REFERENCES:
patent: 4606329 (1986-08-01), Hough
patent: 4844080 (1989-07-01), Frass et al.
patent: 5176620 (1993-01-01), Gilman

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