CA2232553A1 - Implantable hearing aid - Google Patents

Implantable hearing aid

Info

Publication number
CA2232553A1
CA2232553A1 CA002232553A CA2232553A CA2232553A1 CA 2232553 A1 CA2232553 A1 CA 2232553A1 CA 002232553 A CA002232553 A CA 002232553A CA 2232553 A CA2232553 A CA 2232553A CA 2232553 A1 CA2232553 A1 CA 2232553A1
Authority
CA
Canada
Prior art keywords
microactuator
tube
microphone
transducer
hearing aid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002232553A
Other languages
French (fr)
Other versions
CA2232553C (en
Inventor
S. George Lesinski
Armand P. Neukermans
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LESINSKI Ltd Inc
Adagio Associates Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2232553A1 publication Critical patent/CA2232553A1/en
Application granted granted Critical
Publication of CA2232553C publication Critical patent/CA2232553C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/46—Special adaptations for use as contact microphones, e.g. on musical instrument, on stethoscope
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H04R17/02—Microphones
    • H04R17/025—Microphones using a piezoelectric polymer
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
    • H04R2460/13—Hearing devices using bone conduction transducers

Abstract

A hearing aid (10) includes an implantable microphone (28), signal-processing amplifier (30), battery, and microactuator (32). The amplifier (30) amplifies and processes a signal from the microphone (28) for application to the microactuator (32). The microactuator (32) is implanted to mechanically create vibrations in perilymph fluid (20a) within a subject's inner ear (17). A transducer (45) of the microactuator (32) is preferably a circular disk, 2 to 8 mils thick, of stress-biased PLZT. Such disks can be mounted as drumheads, preferably in conjunction with a flexible diaphragm (53, 56, 57), to a threaded metal tube (46), e.g. 1.4 mm in diameter and 2.0 mm long. The tube (46) is implanted into a fenestration in the promontory (18) of a subject's inner ear (17). Securing the disk-shaped transducer (45) to a tube (46) having a diameter larger than the fenestration and filling the tube (46) with fluid (58) provides hydraulic amplification for the transducer's displacement. The microphone (28) is preferably fabricated from a thin sheet of PVDF overcoated with inert metal electrodes (42a, 42b).
CA002232553A 1995-09-22 1996-09-19 Implantable hearing aid Expired - Fee Related CA2232553C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/532,398 US5772575A (en) 1995-09-22 1995-09-22 Implantable hearing aid
US08/532,398 1995-09-22
PCT/US1996/015087 WO1997011575A1 (en) 1995-09-22 1996-09-19 Implantable hearing aid

Publications (2)

Publication Number Publication Date
CA2232553A1 true CA2232553A1 (en) 1997-03-27
CA2232553C CA2232553C (en) 2007-12-04

Family

ID=24121613

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002232553A Expired - Fee Related CA2232553C (en) 1995-09-22 1996-09-19 Implantable hearing aid

Country Status (7)

Country Link
US (1) US5772575A (en)
EP (1) EP0873668B1 (en)
JP (1) JP3710483B2 (en)
AU (1) AU7366496A (en)
CA (1) CA2232553C (en)
DE (1) DE69634700T2 (en)
WO (1) WO1997011575A1 (en)

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CA2232553C (en) 2007-12-04
EP0873668A1 (en) 1998-10-28
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US5772575A (en) 1998-06-30
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EP0873668A4 (en) 2004-03-31
JP3710483B2 (en) 2005-10-26
DE69634700D1 (en) 2005-06-09
AU7366496A (en) 1997-04-09
DE69634700T2 (en) 2006-01-19
WO1997011575A1 (en) 1997-03-27

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