GB1440724A - Implantable electromagnetic hearing aid - Google Patents

Implantable electromagnetic hearing aid

Info

Publication number
GB1440724A
GB1440724A GB3144774A GB3144774A GB1440724A GB 1440724 A GB1440724 A GB 1440724A GB 3144774 A GB3144774 A GB 3144774A GB 3144774 A GB3144774 A GB 3144774A GB 1440724 A GB1440724 A GB 1440724A
Authority
GB
United Kingdom
Prior art keywords
coil
bone
ear
stirrup
holder
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.)
Expired
Application number
GB3144774A
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.)
Fredrickson J M
Original Assignee
Fredrickson J M
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 Fredrickson J M filed Critical Fredrickson J M
Priority to GB3144774A priority Critical patent/GB1440724A/en
Priority to US492675A priority patent/US3870832A/en
Publication of GB1440724A publication Critical patent/GB1440724A/en
Expired 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/07—Endoradiosondes
    • A61B5/076—Permanent implantations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/18—Internal ear or nose parts, e.g. ear-drums
    • A61F2002/183—Ear parts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67—Implantable hearing aids or parts thereof not covered by H04R25/606

Abstract

1440724 Ear implants J M FREDRICKSON 16 July 1974 31447/74 Heading A5R [Also in Division H4] An implantable hearing aid comprises a permanent magnet 12 (Fig. 4) which, in use, is rigidly secured to the stirrup bone 13 (stapes) of the ear and a coil 14 located coaxially around or above the magnet 12 in close provimity. When the coil 14 is energised by audio frequency signals the stirrup bone 13 is moved in the same manner as it would be by the anvil bone (incus) to cause vibration of the inner ear fluids. The coil 14 is permanently fixed by a support 15 held by non-tissue toxic cement 40 to bone within the mastoid bowl. Connections 16 from the coil 14 are preferably taken out of the ear through a hole drilled in the mastoid tip of the temporal bone (i.e. behind the outer ear). This hole receives the threads 36 (Fig. 10) of an externally threaded socket 35. The connections 16 lead to two female terminals 34 in a receptacle 11. These terminals 34 receive three pins 33 of a housing 10 enclosing a microphone, amplifier and battery. Two of the pins 33 are connected to the amplifier output while the third pin provides stability. A cap 37, which may have its top end closed (not shown) e.g. when swimming, is threaded on to the top of the socket 35 to hold housing 10 and receptacle 11 in position. Housing 10, receptacle 11 and socket 35 are of non tissue toxic material such as P.T.F.E. Cap 37 is of this material or of stainless steel. The microphone is a condenser type and the amplifier is preferably a logarithmic amplifier. Terminals 33 and 34 are gold plated. The magnet may be encased in and attached to the stirrup 13 by a holder of P.T.F.E. Alternatively magnet 12 is secured to stirrup 13 by non tissue toxic cement such as "SILASTIC" (Trade Mark) or "CRANIOPLAST" (Trade Mark), in which case it is either non tissue toxic, e.g. of "VITULIUM" (Trade Mark) or is encapsulated in non tissue toxic material. Alternatively the holder 17 is mechanically secured to the stirrup 13 without cement, the springiness of the holder providing the connection or the holder is crimped in position. The coil 14 is of copper wire embedded in "SILASTIC" (Trade Mark). In order to implant components 12, 15 and 17 a mastoidectomy is performed, the facial triangle bone is removed and the anvil bone is removed. The holder 15 is of silver wire flattened at the coil end. The microphone, amplifier and battery, individually or in total, may be located elsewhere than behind the ear. An implanted radio receiver may feed the coil, there being an external radio transmitter and microphone.
GB3144774A 1972-07-18 1974-07-16 Implantable electromagnetic hearing aid Expired GB1440724A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3144774A GB1440724A (en) 1972-07-18 1974-07-16 Implantable electromagnetic hearing aid
US492675A US3870832A (en) 1972-07-18 1974-07-29 Implantable electromagnetic hearing aid

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB3347672 1972-07-18
US36493873A 1973-05-29 1973-05-29
GB3144774A GB1440724A (en) 1972-07-18 1974-07-16 Implantable electromagnetic hearing aid
US492675A US3870832A (en) 1972-07-18 1974-07-29 Implantable electromagnetic hearing aid

Publications (1)

Publication Number Publication Date
GB1440724A true GB1440724A (en) 1976-06-23

Family

ID=27448808

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3144774A Expired GB1440724A (en) 1972-07-18 1974-07-16 Implantable electromagnetic hearing aid

Country Status (2)

Country Link
US (1) US3870832A (en)
GB (1) GB1440724A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380764A1 (en) * 1977-02-18 1978-09-15 Philips Nv MEANS FOR PREPARING A SKULL FOR FIXING A TENSIOMETER
FR2382225A1 (en) * 1977-03-04 1978-09-29 Siemens Ag ADAPTER MOUNTED IN THE SKULL OF A PATIENT AND INTENDED TO RECEIVE A PRESSURE TRANSDUCER
EP0281047A1 (en) * 1987-03-06 1988-09-07 Gerald Prof.Dr. Fleischer Middle ear prosthesis
DE3918086C1 (en) * 1989-06-02 1990-09-27 Hortmann Gmbh, 7449 Neckartenzlingen, De
US5277694A (en) * 1991-02-13 1994-01-11 Implex Gmbh Electromechanical transducer for implantable hearing aids
US5456654A (en) * 1993-07-01 1995-10-10 Ball; Geoffrey R. Implantable magnetic hearing aid transducer
US5554096A (en) * 1993-07-01 1996-09-10 Symphonix Implantable electromagnetic hearing transducer
US5772575A (en) * 1995-09-22 1998-06-30 S. George Lesinski Implantable hearing aid
US5857958A (en) * 1993-07-01 1999-01-12 Symphonix Devices, Inc. Implantable and external hearing systems having a floating mass transducer
US5881158A (en) * 1996-05-24 1999-03-09 United States Surgical Corporation Microphones for an implantable hearing aid
US5897486A (en) * 1993-07-01 1999-04-27 Symphonix Devices, Inc. Dual coil floating mass transducers
US5951601A (en) * 1996-03-25 1999-09-14 Lesinski; S. George Attaching an implantable hearing aid microactuator
US5977689A (en) * 1996-07-19 1999-11-02 Neukermans; Armand P. Biocompatible, implantable hearing aid microactuator
US6676592B2 (en) 1993-07-01 2004-01-13 Symphonix Devices, Inc. Dual coil floating mass transducers

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US4352960A (en) * 1980-09-30 1982-10-05 Baptist Medical Center Of Oklahoma, Inc. Magnetic transcutaneous mount for external device of an associated implant
USRE32947E (en) * 1980-09-30 1989-06-13 Baptist Medical Center Of Oklahoma, Inc. Magnetic transcutaneous mount for external device of an associated implant
US4628907A (en) * 1984-03-22 1986-12-16 Epley John M Direct contact hearing aid apparatus
US4850962A (en) * 1984-12-04 1989-07-25 Medical Devices Group, Inc. Implantable hearing aid and method of improving hearing
US4729366A (en) * 1984-12-04 1988-03-08 Medical Devices Group, Inc. Implantable hearing aid and method of improving hearing
US4776322A (en) * 1985-05-22 1988-10-11 Xomed, Inc. Implantable electromagnetic middle-ear bone-conduction hearing aid device
US5015225A (en) * 1985-05-22 1991-05-14 Xomed, Inc. Implantable electromagnetic middle-ear bone-conduction hearing aid device
US4606329A (en) * 1985-05-22 1986-08-19 Xomed, Inc. Implantable electromagnetic middle-ear bone-conduction hearing aid device
US4612915A (en) * 1985-05-23 1986-09-23 Xomed, Inc. Direct bone conduction hearing aid device
US4800884A (en) * 1986-03-07 1989-01-31 Richards Medical Company Magnetic induction hearing aid
US4817607A (en) * 1986-03-07 1989-04-04 Richards Medical Company Magnetic ossicular replacement prosthesis
US4840178A (en) * 1986-03-07 1989-06-20 Richards Metal Company Magnet for installation in the middle ear
US4774933A (en) * 1987-05-18 1988-10-04 Xomed, Inc. Method and apparatus for implanting hearing device
US4936305A (en) * 1988-07-20 1990-06-26 Richards Medical Company Shielded magnetic assembly for use with a hearing aid
US5085628A (en) * 1988-09-09 1992-02-04 Storz Instrument Company Implantable hearing aid coupler device
US5220918A (en) * 1988-11-16 1993-06-22 Smith & Nephew Richards, Inc. Trans-tympanic connector for magnetic induction hearing aid
CA1331803C (en) * 1988-12-21 1994-08-30 Murray A. Davis Hearing aid
EP0567535B1 (en) * 1991-01-17 2003-08-13 ADELMAN, Roger A. Improved hearing apparatus
US5531787A (en) * 1993-01-25 1996-07-02 Lesinski; S. George Implantable auditory system with micromachined microsensor and microactuator
SE9301406D0 (en) * 1993-04-27 1993-04-27 Medevelop Ab FOE IMPLANTATION IN THE WEBSITE PROVIDED FOR THE HALLAR ORGAN FOR CONTROLLED RECORDING AND LOCATION FIXING OF WIRELESS WIRES FOR ELECTRIC INFORMATION TRANSFER USEFUL EQUIPMENT AND SET FOR ITS APPLICATION
US20090253951A1 (en) * 1993-07-01 2009-10-08 Vibrant Med-El Hearing Technology Gmbh Bone conducting floating mass transducers
US5800336A (en) * 1993-07-01 1998-09-01 Symphonix Devices, Inc. Advanced designs of floating mass transducers
US5913815A (en) 1993-07-01 1999-06-22 Symphonix Devices, Inc. Bone conducting floating mass transducers
US5558618A (en) * 1995-01-23 1996-09-24 Maniglia; Anthony J. Semi-implantable middle ear hearing device
US5906635A (en) * 1995-01-23 1999-05-25 Maniglia; Anthony J. Electromagnetic implantable hearing device for improvement of partial and total sensoryneural hearing loss
FR2729844B1 (en) * 1995-01-26 1997-11-28 Sabin Pierre Jean Claude IMPLANT MEDICAL DEVICE ASSEMBLY FOR ELECTRICAL CONNECTIONS THROUGH THE SKIN
US6001129A (en) * 1996-08-07 1999-12-14 St. Croix Medical, Inc. Hearing aid transducer support
US5836863A (en) 1996-08-07 1998-11-17 St. Croix Medical, Inc. Hearing aid transducer support
US6315710B1 (en) 1997-07-21 2001-11-13 St. Croix Medical, Inc. Hearing system with middle ear transducer mount
US5993376A (en) * 1997-08-07 1999-11-30 St. Croix Medical, Inc. Electromagnetic input transducers for middle ear sensing
US6139488A (en) * 1997-09-25 2000-10-31 Symphonix Devices, Inc. Biasing device for implantable hearing devices
SE513670C2 (en) 1997-12-18 2000-10-16 Grogrunden Ab Nr 444 Percutaneous bone anchored transducer
US6137889A (en) * 1998-05-27 2000-10-24 Insonus Medical, Inc. Direct tympanic membrane excitation via vibrationally conductive assembly
US6267731B1 (en) 1998-06-05 2001-07-31 St. Croix Medical, Inc. Method and apparatus for reduced feedback in implantable hearing assistance systems
DE19840212C2 (en) * 1998-09-03 2001-08-02 Implex Hear Tech Ag Transducer arrangement for partially or fully implantable hearing aids
DE19840211C1 (en) * 1998-09-03 1999-12-30 Implex Hear Tech Ag Transducer for partially or fully implantable hearing aid
US6364825B1 (en) 1998-09-24 2002-04-02 St. Croix Medical, Inc. Method and apparatus for improving signal quality in implantable hearing systems
US6113531A (en) * 1998-11-18 2000-09-05 Implex Aktiengesellschaft Hearing Technology Process for optimization of mechanical inner ear stimulation in partially or fully implantable hearing systems
US6940988B1 (en) 1998-11-25 2005-09-06 Insound Medical, Inc. Semi-permanent canal hearing device
US7664282B2 (en) * 1998-11-25 2010-02-16 Insound Medical, Inc. Sealing retainer for extended wear hearing devices
US6277148B1 (en) 1999-02-11 2001-08-21 Soundtec, Inc. Middle ear magnet implant, attachment device and method, and test instrument and method
DE19923403C2 (en) 1999-05-21 2002-11-14 Phonak Ag Staefa Device for mechanically coupling an electromechanical hearing aid transducer that can be implanted in a mastoid cavity
US7379555B2 (en) * 1999-06-08 2008-05-27 Insound Medical, Inc. Precision micro-hole for extended life batteries
DE19931788C1 (en) 1999-07-08 2000-11-30 Implex Hear Tech Ag Implanted mechanical coupling device for auditory ossicle chain in hearing aid system has associated settling device for movement of coupling device between open and closed positions
DE19935029C2 (en) 1999-07-26 2003-02-13 Phonak Ag Staefa Implantable arrangement for mechanically coupling a driver part to a coupling point
US7016504B1 (en) * 1999-09-21 2006-03-21 Insonus Medical, Inc. Personal hearing evaluator
DE19948375B4 (en) 1999-10-07 2004-04-01 Phonak Ag Arrangement for mechanically coupling a driver to a coupling point of the ossicle chain
DE19948336C2 (en) 1999-10-07 2002-02-28 Implex Hear Tech Ag Arrangement for coupling a driver to a coupling point of the ossicle chain
US6436028B1 (en) 1999-12-28 2002-08-20 Soundtec, Inc. Direct drive movement of body constituent
US6940989B1 (en) 1999-12-30 2005-09-06 Insound Medical, Inc. Direct tympanic drive via a floating filament assembly
US6516228B1 (en) * 2000-02-07 2003-02-04 Epic Biosonics Inc. Implantable microphone for use with a hearing aid or cochlear prosthesis
DE10039401C2 (en) 2000-08-11 2002-06-13 Implex Ag Hearing Technology I At least partially implantable hearing system
DE10041726C1 (en) 2000-08-25 2002-05-23 Implex Ag Hearing Technology I Implantable hearing system with means for measuring the coupling quality
DE10047388C1 (en) 2000-09-25 2002-01-10 Implex Hear Tech Ag Implantable hearing system, includes a detachable coupling for securing and locating a transducer and a micro-manipulator
US6730015B2 (en) 2001-06-01 2004-05-04 Mike Schugt Flexible transducer supports
WO2002098506A1 (en) * 2001-06-01 2002-12-12 St. Croix Medical, Inc. Flexible transducer suports
US8075630B2 (en) * 2001-09-06 2011-12-13 Bio-Lok International, Inc. Transcutaneous port having micro-textured surfaces for tissue and bone integration
US6914994B1 (en) * 2001-09-07 2005-07-05 Insound Medical, Inc. Canal hearing device with transparent mode
AU2002342150A1 (en) * 2001-10-30 2003-05-12 George S. Lesinski Implantation method for a hearing aid microactuator implanted into the cochlea
DE10301723B3 (en) * 2003-01-15 2004-09-16 Med-El Elektromedizinische Geräte GmbH Implantable electromechanical transducer
US8457336B2 (en) * 2004-02-05 2013-06-04 Insound Medical, Inc. Contamination resistant ports for hearing devices
TWI233815B (en) * 2004-02-06 2005-06-11 Shr Ji Tau Injector of injection system for nuclear radioactive medicament and automatic feeding device for physiological saline cartridge
US7651460B2 (en) * 2004-03-22 2010-01-26 The Board Of Regents Of The University Of Oklahoma Totally implantable hearing system
US20070003081A1 (en) * 2005-06-30 2007-01-04 Insound Medical, Inc. Moisture resistant microphone
EP1922900A1 (en) * 2005-08-22 2008-05-21 3Win N.V. A combined set comprising a vibration actuator and an implantable device
US9071914B2 (en) * 2007-08-14 2015-06-30 Insound Medical, Inc. Combined microphone and receiver assembly for extended wear canal hearing devices
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EP2301261B1 (en) 2008-06-17 2019-02-06 Earlens Corporation Optical electro-mechanical hearing devices with separate power and signal components
KR101717034B1 (en) 2008-09-22 2017-03-15 이어렌즈 코포레이션 Balanced armature devices and methods for hearing
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US9544700B2 (en) 2009-06-15 2017-01-10 Earlens Corporation Optically coupled active ossicular replacement prosthesis
WO2010148345A2 (en) 2009-06-18 2010-12-23 SoundBeam LLC Eardrum implantable devices for hearing systems and methods
US10286215B2 (en) 2009-06-18 2019-05-14 Earlens Corporation Optically coupled cochlear implant systems and methods
US10555100B2 (en) 2009-06-22 2020-02-04 Earlens Corporation Round window coupled hearing systems and methods
US8715154B2 (en) * 2009-06-24 2014-05-06 Earlens Corporation Optically coupled cochlear actuator systems and methods
CA2776125A1 (en) * 2009-10-01 2011-04-07 Ototronix, Llc Improved middle ear implant and method
US20110082327A1 (en) * 2009-10-07 2011-04-07 Manning Miles Goldsmith Saline membranous coupling mechanism for electromagnetic and piezoelectric round window direct drive systems for hearing amplification
AU2010324854B2 (en) 2009-11-24 2014-03-20 Med-El Elektromedizinische Geraete Gmbh Implantable microphone for hearing systems
DK2656639T3 (en) 2010-12-20 2020-06-29 Earlens Corp Anatomically adapted ear canal hearing aid
US8808906B2 (en) 2011-11-23 2014-08-19 Insound Medical, Inc. Canal hearing devices and batteries for use with same
US8761423B2 (en) 2011-11-23 2014-06-24 Insound Medical, Inc. Canal hearing devices and batteries for use with same
US8682016B2 (en) 2011-11-23 2014-03-25 Insound Medical, Inc. Canal hearing devices and batteries for use with same
US9604325B2 (en) 2011-11-23 2017-03-28 Phonak, LLC Canal hearing devices and batteries for use with same
US10034103B2 (en) 2014-03-18 2018-07-24 Earlens Corporation High fidelity and reduced feedback contact hearing apparatus and methods
EP3169396B1 (en) 2014-07-14 2021-04-21 Earlens Corporation Sliding bias and peak limiting for optical hearing devices
US10629969B2 (en) 2014-07-27 2020-04-21 Sonova Ag Batteries and battery manufacturing methods
US9924276B2 (en) 2014-11-26 2018-03-20 Earlens Corporation Adjustable venting for hearing instruments
DK3355801T3 (en) 2015-10-02 2021-06-21 Earlens Corp Adapted ear canal device for drug delivery
US10321247B2 (en) 2015-11-27 2019-06-11 Cochlear Limited External component with inductance and mechanical vibratory functionality
US10492010B2 (en) 2015-12-30 2019-11-26 Earlens Corporations Damping in contact hearing systems
US11350226B2 (en) 2015-12-30 2022-05-31 Earlens Corporation Charging protocol for rechargeable hearing systems
WO2017116791A1 (en) 2015-12-30 2017-07-06 Earlens Corporation Light based hearing systems, apparatus and methods
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US3061689A (en) * 1957-05-27 1962-10-30 Beltone Hearing Aid Company Hearing aid
US3712962A (en) * 1971-04-05 1973-01-23 J Epley Implantable piezoelectric hearing aid
US3764748A (en) * 1972-05-19 1973-10-09 J Branch Implanted hearing aids

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2380764A1 (en) * 1977-02-18 1978-09-15 Philips Nv MEANS FOR PREPARING A SKULL FOR FIXING A TENSIOMETER
FR2382225A1 (en) * 1977-03-04 1978-09-29 Siemens Ag ADAPTER MOUNTED IN THE SKULL OF A PATIENT AND INTENDED TO RECEIVE A PRESSURE TRANSDUCER
EP0281047A1 (en) * 1987-03-06 1988-09-07 Gerald Prof.Dr. Fleischer Middle ear prosthesis
DE3918086C1 (en) * 1989-06-02 1990-09-27 Hortmann Gmbh, 7449 Neckartenzlingen, De
DE3940632C1 (en) * 1989-06-02 1990-12-06 Hortmann Gmbh, 7449 Neckartenzlingen, De Hearing aid directly exciting inner ear - has microphone encapsulated for implantation in tympanic cavity or mastoid region
US5277694A (en) * 1991-02-13 1994-01-11 Implex Gmbh Electromechanical transducer for implantable hearing aids
US6475134B1 (en) 1993-07-01 2002-11-05 Symphonix Devices, Inc. Dual coil floating mass transducers
US5456654A (en) * 1993-07-01 1995-10-10 Ball; Geoffrey R. Implantable magnetic hearing aid transducer
US5554096A (en) * 1993-07-01 1996-09-10 Symphonix Implantable electromagnetic hearing transducer
US5857958A (en) * 1993-07-01 1999-01-12 Symphonix Devices, Inc. Implantable and external hearing systems having a floating mass transducer
US6676592B2 (en) 1993-07-01 2004-01-13 Symphonix Devices, Inc. Dual coil floating mass transducers
US5897486A (en) * 1993-07-01 1999-04-27 Symphonix Devices, Inc. Dual coil floating mass transducers
US5772575A (en) * 1995-09-22 1998-06-30 S. George Lesinski Implantable hearing aid
US5951601A (en) * 1996-03-25 1999-09-14 Lesinski; S. George Attaching an implantable hearing aid microactuator
US5881158A (en) * 1996-05-24 1999-03-09 United States Surgical Corporation Microphones for an implantable hearing aid
US5977689A (en) * 1996-07-19 1999-11-02 Neukermans; Armand P. Biocompatible, implantable hearing aid microactuator
US6153966A (en) * 1996-07-19 2000-11-28 Neukermans; Armand P. Biocompatible, implantable hearing aid microactuator

Also Published As

Publication number Publication date
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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19940715