Direct bone conduction hearing aid device

Details Direct bone conduction hearing aid device Direct bone conduction hearing aid device

1985-05-23

1986-09-23

Freeh, William L.

Surgery

Truss

Perineal

128421, 179107BC, 179107R, H04R 900, H04R 2500

Patent

active

046129154

ABSTRACT:
A direct bone conduction hearing aid device is disclosed and includes a sound processor for receiving sound and generating an amplified electromagnetic signal in response thereto. This signal is transmitted to a subcutaneously implanted vibration generating means which is secured to a skull bone of the user and which includes magnetic means. An analog signal causes the magnet to vibrate and these vibrations are transmitted to the skull bone and thence to the cochlea to create the perception of sound.

REFERENCES:
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patent: 3209081 (1965-09-01), Ducote et al.
patent: 3870832 (1975-03-01), Fredrickson
patent: 4284856 (1981-08-01), Hockmair
patent: 4352960 (1982-10-01), Dormer et al.
patent: 4419995 (1983-12-01), Hockmair
patent: 4498461 (1985-02-01), Hakansson
Scand Audiol 13; Mar. 1984; "Hearing Thresholds With Direct Bone Bone Conduction Versus Conventional Bone Conduction"; by B. Hakansson, A. Tjellstrom and U. Rosenhall.
"Direct Bone Anchorage of External Hearing Aids"; by A. Tjellstrom, J. Lindstrom, O. Hallen, T. Albrektsson and P. J. Bronemark; J. Biomed Eng., vol. 5; Jan. 1983.
"Bone Conduction Speech Discrimination"; by Mendell Robinson, MD and Stephen D. Kasden, MS; Arch Otolaryngol, vol. 103, Apr, 1977.

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