Sealing of hearing aid to ear canal

Details Sealing of hearing aid to ear canal Sealing of hearing aid to ear canal

1996-01-17

1997-10-28

Dang, Khanh

Acoustics

Anatomic or prosthetic relation

Ear and mouth

181135, H04R 2502

Patent

active

056820208

ABSTRACT:
A device for providing a seal between a sound-blocking or sound-transmitting device, especially an "in the ear" hearing aid, and the ear canal into which it is inserted. This device comprises a layer of polymeric foam, especially retarded recovery foam, that is applied to at least a portion of the canal-contacting surface of the hearing aid. A normally tacky and pressure-sensitive adhesive bonds the foam to the hearing aid, thereby rendering the device easily removable and replaceable by the user. In a preferred embodiment the hearing aid is sealed to the bony portion of the ear canal.

REFERENCES:
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patent: 2934160 (1960-03-01), Touson
patent: 3505999 (1970-04-01), Harvey et al.
patent: 4006796 (1977-02-01), Coehorst
patent: 4130741 (1978-12-01), Gottlieb
patent: 4375016 (1983-02-01), Harada
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patent: 4617429 (1986-10-01), Bellafiore
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patent: 5002151 (1991-03-01), Oliveira et al.
patent: 5031219 (1991-07-01), Ward et al.
patent: 5201007 (1993-04-01), Ward et al.
Phillips Hearing Instrument publication dated Jun. 1994, entitled B.S.T.--a Revolution in Peritympanic Application.

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