WO2008014245A2 - Moving coil actuator for middle ear implants - Google Patents
Moving coil actuator for middle ear implants Download PDFInfo
- Publication number
- WO2008014245A2 WO2008014245A2 PCT/US2007/074195 US2007074195W WO2008014245A2 WO 2008014245 A2 WO2008014245 A2 WO 2008014245A2 US 2007074195 W US2007074195 W US 2007074195W WO 2008014245 A2 WO2008014245 A2 WO 2008014245A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- coil
- patient
- magnetic field
- magnet
- ear
- Prior art date
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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R9/00—Transducers of moving-coil, moving-strip, or moving-wire type
- H04R9/02—Details
Definitions
- the present invention relates to improving hearing for the hearing-impaired.
- Fig. 1 shows the anatomy of a normal human ear.
- a normal ear transmits sounds through the outer ear 101 to the eardrum 102, which moves the bones of the middle ear 103, which in turn excites the cochlea 104.
- the cochlea (or inner ear) 104 includes an upper channel known as the scala vestibuli 105 and a lower channel known as the scala tympani 106, which are connected by the cochlear duct 107.
- a bone of the middle ear 103 transmits vibrations via the fenestra ovalis (oval window), to the perilymph of the cochlea 104.
- the hair cells of the organ of Corti are excited to initiate chemi-electric pulses that are transmitted to the cochlear nerve 113, and ultimately to the brain.
- Some patients may have partially or completely impaired hearing for reasons including: long term exposure to environmental noise, congenital defects, damage due to disease or illness, use of certain medications such as aminoglycosides, or physical trauma. Hearing impairment maybe of the conductive, sensineural, or combination types.
- Implants often include various electro-magnetic transducers that may function as an actuator, a sensor, and/or a switch.
- An example of an implant with an electro-magnetic actuator is a middle ear implant which mechanically drives the ossicular chain.
- Such a middle ear implant that includes a floating mass transducer was developed by Geoffrey Ball et al.(see United States Patent Numbers: 5,913,815; 5,897,486; 5,624,376; 5,554,096; 5,456,654; 5,800,336; 5,857,958; and 6,475,134, each of which is incorporated herein by reference).
- Magnetic Resonance Imaging (MRI) examination may be contraindicated for a wearer of such an auditory (cochlear or middle ear) prosthesis since potential interactions between the implanted electro -magnetic transducer and the applied external MRI magnetic field may, at higher field strength (i.e. above about 1 Tesla), produce three potentially harmful effects:
- the implanted magnet Due to the external magnetic field, the implanted magnet becomes partly demagnetized and this may lead to damage or at least to a reduced power efficiency of the electro-magnetic transducer after exposure to the MRI field.
- Radio frequency (RF) pulses (magnetic field Bi in MRI) emitted by the MRI unit can induce voltages in the coil(s) of the electro -magnetic transducer and this may destroy the transducer and/or may harm the patient.
- RF radio frequency
- a system for hearing enhancement includes an audio processor that generates an electrical audio signal and transmits the signal to a coil.
- the coil is implanted into a patient in a position that results in transmission of mechanical stimulation to the inner ear when the coil is spatially displaced.
- a permanent magnet is placed in proximity to the coil so that when the coil receives the electrical audio signal form the processor, the induced coil magnetic field in the coil interacts with the magnetic field from the permanent magnet to spatially displace the coil and, as a result, transmit the mechanical stimulation to the inner ear.
- the permanent magnet may include an outer layer of biocompatible material such as titanium, niobium, tantalum, or stainless steel. Also, a microphone maybe included with the system to convert an input acoustic signal into a representative signal output to the processor.
- Another aspect of the invention is a method for improving the hearing of a patient that includes implanting a coil into the ear of the patient, and securely attaching a permanent magnet to a bone of the patient in a location that is proximal to the coil, so that the magnetic fields of the magnet and the coil interact under the control of the electrical audio signal to displace the coil and, as a result, transmit mechanical stimulation to the inner ear.
- the coil maybe directly or indirectly, mechanically coupled to the Malleus, the Incus, the Stapes, the oval window, the round window or a bone proximal to the ear.
- the mechanical stimulation may therefore travel through the middle ear before arriving at the inner ear.
- a recess in a bone may be created for the placement and affixation of the permanent magnet.
- the permanent magnet may be placed in an orientation that is parallel to the body axis of the patient.
- a microphone may be affixed to the patient to convert an input acoustic signal into a representative signal output to the processor.
- FIG. 1 shows the structure of a normal human ear
- FIG. 2 shows a block diagram of the various components of a hearing enhancement system in accordance with an embodiment of the invention
- FIG. 3 shows a human ear with implanted components of the system of Fig. 2.
- Illustrative embodiments of the present invention relate to an implant system for enhancing the hearing of a patient
- a general functional layout of an implant system is shown in the block diagram of Fig. 2.
- a static magnetic field component 230 and a dynamic magnetic field component 220 are positioned in magnetic proximity to each other.
- one of the components (the dynamic component as shown here) is mechanically coupled to an anatomical structure that is in mechanical signal communication with the cochlea.
- the dynamic component may be attached to an anatomical structure of the middle ear or to a membrane of the middle ear or inner ear.
- An audio processor 210 receives an audio signal from an audio source 200 and produces an electrical audio signal that actuates the dynamic magnetic field component 220 to produce a changing magnetic field.
- the dynamic magnetic field produced by the dynamic magnetic field component 220 interacts with the static magnetic field produced by the static magnetic field component 230 to spatially displace the dynamic magnetic field component 220; the resulting vibrations are mechanically transmitted to the cochlea 104 to effect hearing perception of the audio source.
- an inductance coil 320 is used as the dynamic magnetic field component 220 and a permanent magnet 330 is used as the static magnetic field component 230.
- Figure 3 shows an example of how these may be implanted in a patient.
- the inductance coil 320 and the permanent magnet 330 are positioned by a surgeon so that they are in magnetic proximity.
- the coil 320 may be attached (e.g., cemented) to an anatomical structure that is either directly or indirectly mechanically coupled to the cochlea.
- Such structures include the Malleus, the Incus, the Stapes, the oval window, the round window, or a bone proximal to the ear.
- the permanent magnet 330 maybe, for example, a neodymium or samarium-cobalt magnet, and may be rigidly attached to a bone in proximity to the coil (e.g., attached to a region of the skull).
- One method for implanting the magnet is to remove a region of bone and to affix the magnet within the recess.
- the magnet 330 may have an outer layer or coating of a biocompatible material such as titanium, niobium, tantalum, or stainless steel to prevent corrosion.
- the magnet may be encapsulated within a case, e.g., of titanium, niobium, tantalum, or stainless steel.
- the magnet 330 if the magnet 330 is of sufficient strength, it could be attached to the outside of a patient's skull rather than implanted internally.
- the coil 320 may be attached to and driven by the audio processor 210.
- the audio processor 210 accepts an audio input and provides an appropriately conditioned representative electronic output to the coil 320 to induce a dynamic magnetic field.
- the induced dynamic magnetic field interacts with the static field produced by the permanent magnet 330, causing movement of the coil 320.
- vibrations are transmitted directly to the anatomical structure to which the coil 320 is attached and arrive at the cochlea 104, where the vibrations are transduced into the neural hearing impulses.
- the coil 320 may be constructed in a way that minimizes vibrations within the coil 320; for example, it may have a rigid but magnetically permeable core.
- the audio processor 210 contains electronic components for accepting an audio input from an audio source.
- the processor 210 will accept analog signals, digital signals, or both.
- the audio input may be an analog or digital output from a microphone, telephone, television, stereo system, mp3 player, radio receiver, computer, Voice Over Internet Protocol (VOIP) network, or other device.
- the audio input may be accepted via wired or wireless connection.
- VOIP Voice Over Internet Protocol
- the processor 210 maybe equipped to accept various types of digital audio information, including Audio Interchange File Format (AIFF), WaveForm (WAV), Windows Media Audio (WMA), True Audio Lossless Codec (TTA), Free Lossless Audio Codec (FLAC), Advanced Audio Encoding (AAC), Ogg Vorbis, Apple Lossless Audio Codec (ALAC) or Shorten (SHN).
- AIFF Audio Interchange File Format
- WAV WaveForm
- WMA Windows Media Audio
- TTA True Audio Lossless Codec
- FLAC Free Lossless Audio Codec
- AAC Advanced Audio Encoding
- Ogg Vorbis Apple Lossless Audio Codec
- LAC Apple Lossless Audio Codec
- SHN Shorten
- the processor 210 may then use various digital or analog amplifiers, filters, converters, digital memory and microprocessors, or other circuitry to condition the audio signal and, if necessary, convert it into an analog electric signal suitable for driving the coil 230 in the presence of the static magnetic field 230.
- the signal conditioning may include amplification or dampening of particular sounds of various amplitudes and frequencies to enhance the listening experience.
- the conditioned signal is output from the processor 210 via lead wires 300 to one or both ears of a patient.
- the processor 210 may be entirely external, or may be implanted into the patient. If implanted, the processor 210 may provide the static magnetic field 230 (e.g. by incorporation of a permanent magnet 330).
- the processor 210 may include a power supply, such as a disposable or rechargeable battery, including a Lithium-polymer or zinc-air battery.
- the hearing enhancement system is implanted into a patient in a manner that is conducive to permitting the patient to undergo magnetic resonance imaging. If the processor 210 is switched to an inactive state prior to the imaging procedure, the coil 320 will not be displaced in the MRI magnetic field.
- the magnetic field of a high-field MRI scanner is typically oriented in the direction of the body axis. Choosing an orientation for the permanent magnet 330 that is parallel to the body axis will therefore reduce or eliminate torque on the permanent magnet 330, and may also reduce or eliminate demagnetization of the magnet.
- Reduction in the potential for demagnetization may also be achieved by appropriate choice of the shape-factor of magnet 330, e.g., a magnet of long cylindrical or prismatic shape provides increased resistance to demagnetization by an opposing external field.
- the magnet 330 may be surgically replaced after an MRI procedure. Accordingly, the placement of the magnet 330 maybe chosen to allow for facile surgical access for removal and replacement.
- the disclosed methods for enhancing hearing may be implemented as a computer program product for use with a computer system.
- Such implementations may include a series of computer instructions fixed either on a tangible medium, such as a computer readable medium (e.g., a diskette, CD-ROM, ROM, or fixed disk) or transmittable to a computer system, via a modem or other interface device, such as a communications adapter connected to a network over a medium.
- the medium may be either a tangible medium (e.g., optical or analog communications lines) or a medium implemented with wireless techniques (e.g., microwave, infrared or other transmission techniques).
- the series of computer instructions embodies all or part of the functionality previously described herein with respect to the system. Those skilled in the art should appreciate that such computer instructions can be written in a number of programming languages for use with many computer architectures or operating systems.
- Such instructions may be stored in any memory device, such as semiconductor, magnetic, optical or other memory devices, and may be transmitted using any communications technology, such as optical, infrared, microwave, or other transmission technologies.
- a computer program product may be distributed as a removable medium with accompanying printed or electronic documentation (e.g., shrink wrapped software), preloaded with a computer system (e.g., on system ROM or fixed disk), or distributed from a server or electronic bulletin board over the network (e.g., the Internet or World Wide Web).
- some embodiments of the invention may be implemented as a combination of both software (e.g., a computer program product) and hardware. Still other embodiments of the invention are implemented as entirely hardware, or entirely software (e.g., a computer program product).
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2007276742A AU2007276742B2 (en) | 2006-07-24 | 2007-07-24 | Moving coil actuator for middle ear implants |
CA002658268A CA2658268A1 (en) | 2006-07-24 | 2007-07-24 | Moving coil actuator for middle ear implants |
EP07813274A EP2044809A2 (en) | 2006-07-24 | 2007-07-24 | Moving coil actuator for middle ear implants |
JP2009521945A JP2009544425A (en) | 2006-07-24 | 2007-07-24 | Moving coil actuator for middle ear implants |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US83282106P | 2006-07-24 | 2006-07-24 | |
US60/832,821 | 2006-07-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2008014245A2 true WO2008014245A2 (en) | 2008-01-31 |
WO2008014245A3 WO2008014245A3 (en) | 2008-03-20 |
Family
ID=38794649
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/074195 WO2008014245A2 (en) | 2006-07-24 | 2007-07-24 | Moving coil actuator for middle ear implants |
Country Status (10)
Country | Link |
---|---|
US (1) | US7744525B2 (en) |
EP (1) | EP2044809A2 (en) |
JP (1) | JP2009544425A (en) |
KR (1) | KR20090034959A (en) |
CN (1) | CN101491113A (en) |
AR (1) | AR062036A1 (en) |
AU (1) | AU2007276742B2 (en) |
CA (1) | CA2658268A1 (en) |
RU (1) | RU2009106176A (en) |
WO (1) | WO2008014245A2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009012130A1 (en) * | 2007-07-13 | 2009-01-22 | Med-El Elektromedizinische Geraete Gmbh | Method of demagnetizing and remagnetising a magnetic element in an implant during magnetic resonance imaging |
KR101481889B1 (en) * | 2012-04-11 | 2015-01-12 | 애플 인크. | Audio device with a voice coil channel and a separately amplified telecoil channel |
Families Citing this family (30)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7668325B2 (en) | 2005-05-03 | 2010-02-23 | Earlens Corporation | Hearing system having an open chamber for housing components and reducing the occlusion effect |
US8295523B2 (en) * | 2007-10-04 | 2012-10-23 | SoundBeam LLC | Energy delivery and microphone placement methods for improved comfort in an open canal hearing aid |
US8401212B2 (en) * | 2007-10-12 | 2013-03-19 | Earlens Corporation | Multifunction system and method for integrated hearing and communication with noise cancellation and feedback management |
US7867160B2 (en) * | 2004-10-12 | 2011-01-11 | Earlens Corporation | Systems and methods for photo-mechanical hearing transduction |
US8401213B2 (en) * | 2008-03-31 | 2013-03-19 | Cochlear Limited | Snap-lock coupling system for a prosthetic device |
DK2301261T3 (en) | 2008-06-17 | 2019-04-23 | Earlens Corp | Optical electromechanical hearing aids with separate power supply and signal components |
KR101568451B1 (en) | 2008-06-17 | 2015-11-11 | 이어렌즈 코포레이션 | Optical electro-mechanical hearing devices with combined power and signal architectures |
US8396239B2 (en) | 2008-06-17 | 2013-03-12 | Earlens Corporation | Optical electro-mechanical hearing devices with combined power and signal architectures |
WO2010033933A1 (en) | 2008-09-22 | 2010-03-25 | Earlens Corporation | Balanced armature devices and methods for hearing |
CN102598712A (en) * | 2009-06-05 | 2012-07-18 | 音束有限责任公司 | Optically coupled acoustic middle ear implant systems and methods |
US9544700B2 (en) | 2009-06-15 | 2017-01-10 | Earlens Corporation | Optically coupled active ossicular replacement prosthesis |
CN102640435B (en) * | 2009-06-18 | 2016-11-16 | 伊尔莱茵斯公司 | Optical coupled cochlea implantation system and method |
EP2443843A4 (en) | 2009-06-18 | 2013-12-04 | SoundBeam LLC | Eardrum implantable devices for hearing systems and methods |
CN102598715B (en) | 2009-06-22 | 2015-08-05 | 伊尔莱茵斯公司 | optical coupling bone conduction device, system and method |
WO2011005500A2 (en) | 2009-06-22 | 2011-01-13 | SoundBeam LLC | Round window coupled hearing systems and methods |
WO2010151647A2 (en) * | 2009-06-24 | 2010-12-29 | SoundBeam LLC | Optically coupled cochlear actuator systems and methods |
WO2010151636A2 (en) | 2009-06-24 | 2010-12-29 | SoundBeam LLC | Optical cochlear stimulation devices and methods |
WO2012088187A2 (en) | 2010-12-20 | 2012-06-28 | SoundBeam LLC | Anatomically customized ear canal hearing apparatus |
WO2014011217A2 (en) * | 2012-07-09 | 2014-01-16 | Vibrant Med-El Hearing Technology Gmbh | Electromagnetic bone conduction hearing device |
US10034103B2 (en) | 2014-03-18 | 2018-07-24 | Earlens Corporation | High fidelity and reduced feedback contact hearing apparatus and methods |
WO2016011044A1 (en) | 2014-07-14 | 2016-01-21 | Earlens Corporation | Sliding bias and peak limiting for optical hearing devices |
US9924276B2 (en) | 2014-11-26 | 2018-03-20 | Earlens Corporation | Adjustable venting for hearing instruments |
US20170095202A1 (en) | 2015-10-02 | 2017-04-06 | Earlens Corporation | Drug delivery customized ear canal apparatus |
US11350226B2 (en) | 2015-12-30 | 2022-05-31 | Earlens Corporation | Charging protocol for rechargeable hearing systems |
US10178483B2 (en) | 2015-12-30 | 2019-01-08 | Earlens Corporation | Light based hearing systems, apparatus, and methods |
US10492010B2 (en) | 2015-12-30 | 2019-11-26 | Earlens Corporations | Damping in contact hearing systems |
CN109952771A (en) | 2016-09-09 | 2019-06-28 | 伊尔兰斯公司 | Contact hearing system, device and method |
WO2018093733A1 (en) | 2016-11-15 | 2018-05-24 | Earlens Corporation | Improved impression procedure |
WO2019173470A1 (en) | 2018-03-07 | 2019-09-12 | Earlens Corporation | Contact hearing device and retention structure materials |
WO2019199680A1 (en) | 2018-04-09 | 2019-10-17 | Earlens Corporation | Dynamic filter |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6084975A (en) | 1998-05-19 | 2000-07-04 | Resound Corporation | Promontory transmitting coil and tympanic membrane magnet for hearing devices |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5220918A (en) * | 1988-11-16 | 1993-06-22 | Smith & Nephew Richards, Inc. | Trans-tympanic connector for magnetic induction hearing aid |
US5163957A (en) * | 1991-09-10 | 1992-11-17 | Smith & Nephew Richards, Inc. | Ossicular prosthesis for mounting magnet |
US5624376A (en) * | 1993-07-01 | 1997-04-29 | Symphonix Devices, Inc. | Implantable and external hearing systems having a floating mass transducer |
US5554096A (en) * | 1993-07-01 | 1996-09-10 | Symphonix | Implantable electromagnetic hearing transducer |
US5456654A (en) * | 1993-07-01 | 1995-10-10 | Ball; Geoffrey R. | Implantable magnetic hearing aid transducer |
US5800336A (en) * | 1993-07-01 | 1998-09-01 | Symphonix Devices, Inc. | Advanced designs of floating mass transducers |
WO1997032629A1 (en) * | 1996-03-06 | 1997-09-12 | Advanced Bionics Corporation | Magnetless implantable stimulator and external transmitter and implant tools for aligning same |
US6161046A (en) * | 1996-04-09 | 2000-12-12 | Maniglia; Anthony J. | Totally implantable cochlear implant for improvement of partial and total sensorineural hearing loss |
US8334677B2 (en) * | 2003-10-13 | 2012-12-18 | Cochlear Limited | Battery life optimizer |
US5954628A (en) * | 1997-08-07 | 1999-09-21 | St. Croix Medical, Inc. | Capacitive input transducers for middle ear sensing |
US6217508B1 (en) * | 1998-08-14 | 2001-04-17 | Symphonix Devices, Inc. | Ultrasonic hearing system |
US6436028B1 (en) * | 1999-12-28 | 2002-08-20 | Soundtec, Inc. | Direct drive movement of body constituent |
SE0002072L (en) * | 2000-06-02 | 2001-05-21 | P & B Res Ab | Vibrator for leg anchored and leg conduit hearing aids |
WO2001091515A2 (en) * | 2001-08-17 | 2001-11-29 | Phonak Ag | Implanted hearing aid |
AU2003270597A1 (en) * | 2002-09-10 | 2004-04-30 | Vibrant Med-El Hearing Technology Gmbh | Implantable medical devices with multiple transducers |
AU2003901696A0 (en) * | 2003-04-09 | 2003-05-01 | Cochlear Limited | Implant magnet system |
US7442164B2 (en) * | 2003-07-23 | 2008-10-28 | Med-El Elektro-Medizinische Gerate Gesellschaft M.B.H. | Totally implantable hearing prosthesis |
US8246532B2 (en) * | 2006-02-14 | 2012-08-21 | Vibrant Med-El Hearing Technology Gmbh | Bone conductive devices for improving hearing |
-
2007
- 2007-07-23 AR ARP070103273A patent/AR062036A1/en unknown
- 2007-07-24 JP JP2009521945A patent/JP2009544425A/en not_active Withdrawn
- 2007-07-24 CA CA002658268A patent/CA2658268A1/en not_active Abandoned
- 2007-07-24 CN CNA2007800268282A patent/CN101491113A/en active Pending
- 2007-07-24 KR KR1020097002340A patent/KR20090034959A/en not_active Application Discontinuation
- 2007-07-24 WO PCT/US2007/074195 patent/WO2008014245A2/en active Application Filing
- 2007-07-24 AU AU2007276742A patent/AU2007276742B2/en active Active
- 2007-07-24 US US11/782,123 patent/US7744525B2/en not_active Expired - Fee Related
- 2007-07-24 EP EP07813274A patent/EP2044809A2/en not_active Withdrawn
- 2007-07-24 RU RU2009106176/14A patent/RU2009106176A/en not_active Application Discontinuation
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6084975A (en) | 1998-05-19 | 2000-07-04 | Resound Corporation | Promontory transmitting coil and tympanic membrane magnet for hearing devices |
Non-Patent Citations (1)
Title |
---|
See also references of EP2044809A2 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009012130A1 (en) * | 2007-07-13 | 2009-01-22 | Med-El Elektromedizinische Geraete Gmbh | Method of demagnetizing and remagnetising a magnetic element in an implant during magnetic resonance imaging |
KR101481889B1 (en) * | 2012-04-11 | 2015-01-12 | 애플 인크. | Audio device with a voice coil channel and a separately amplified telecoil channel |
Also Published As
Publication number | Publication date |
---|---|
EP2044809A2 (en) | 2009-04-08 |
US7744525B2 (en) | 2010-06-29 |
JP2009544425A (en) | 2009-12-17 |
AU2007276742A1 (en) | 2008-01-31 |
KR20090034959A (en) | 2009-04-08 |
CN101491113A (en) | 2009-07-22 |
WO2008014245A3 (en) | 2008-03-20 |
RU2009106176A (en) | 2010-08-27 |
CA2658268A1 (en) | 2008-01-31 |
AU2007276742B2 (en) | 2011-06-02 |
AR062036A1 (en) | 2008-08-10 |
US20080021518A1 (en) | 2008-01-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7744525B2 (en) | Moving coil actuator for middle ear implants | |
AU2012358871B2 (en) | Magnet arrangement for bone conduction hearing implant | |
US6575894B2 (en) | At least partially implantable system for rehabilitation of a hearing disorder | |
US6697674B2 (en) | At least partially implantable system for rehabilitation of a hearing disorder | |
AU2010326144B2 (en) | Inductive signal and energy transfer through the external auditory canal | |
US6807445B2 (en) | Totally implantable hearing system | |
AU778131B2 (en) | At least partially implantable system for rehabilitation of hearing disorder | |
US5842967A (en) | Contactless transducer stimulation and sensing of ossicular chain | |
CN102318370B (en) | Implantable hearing prosthesis for receptor sufferer | |
US20120029267A1 (en) | Electromagnetic Bone Conduction Hearing Device | |
US20170203101A1 (en) | Implantable sound sensor for hearing prostheses | |
US9056204B2 (en) | Universal implant | |
Maniglia et al. | Contactless semi-implantable electromagnetic middle ear device for the treatment of sensorineural hearing loss: short-term and long-term animal experiments | |
Hough et al. | Early clinical results: SOUNDTEC implantable hearing device phase II study | |
Kroll et al. | The envoy® totally Implantable hearing system, St. Croix medical | |
AU2013312415B2 (en) | Electromagnetic bone conduction hearing device | |
Maniglia et al. | Bioelectronic microphone options for a totally implantable hearing device for partial and total hearing loss | |
Bruschini et al. | Middle Ear and Bone Conduction Implants: An Overview of the Current Devices | |
AU2014200384B2 (en) | Inductive signal and energy transfer through the external auditory canal | |
Leuwer et al. | Restoration of hearing by hearing aids: conventional hearing aids–implantable hearing aids–cochlear implants–auditory brainstem implants | |
EP2783664A1 (en) | Auditory stimulation system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200780026828.2 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 07813274 Country of ref document: EP Kind code of ref document: A2 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007276742 Country of ref document: AU |
|
WWE | Wipo information: entry into national phase |
Ref document number: 115/MUMNP/2009 Country of ref document: IN |
|
ENP | Entry into the national phase |
Ref document number: 2658268 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2007813274 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009521945 Country of ref document: JP |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 2007276742 Country of ref document: AU Date of ref document: 20070724 Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097002340 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2009106176 Country of ref document: RU Kind code of ref document: A |