Apparatus and method for simulating a human mastoid

Details Apparatus and method for simulating a human mastoid Apparatus and method for simulating a human mastoid

1995-02-16

1997-04-29

Sykes, Angela D.

Surgery

Surgically implanted vibratory hearing aid

H04R 2500

Patent

active

056243774

ABSTRACT:
An apparatus and method for simulating a human mastoid is disclosed. The apparatus includes a diaphragm having a mass, springiness and damping structure sufficient to more closely replicate the impedance of a human head bone and skin overlying the same, than prior art testing devices. In a preferred embodiment, the method includes placing the diaphragm over the central opening of an artificial ear and placing a bone conduction hearing aid on top of the diaphragm. A microphone disposed below the opening measures the sound generated by the vibration. These measurements provides an indication of whether the bone conduction hearing aid is functioning properly. The apparatus and method are not only easier to use and less expensive than prior art devices and methods, they are also as accurate, if not more accurate.

REFERENCES:
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patent: 1772163 (1930-08-01), Squyars
patent: 2910539 (1959-10-01), Hartsfield
patent: 2957954 (1960-10-01), Swinehart
patent: 4988333 (1991-01-01), Engebretson et al.
patent: 5218337 (1993-06-01), Peter
patent: 5425107 (1995-06-01), Bertagni et al.

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