EP3104626A1 - Prothèse auditive comportant un commutateur magnétique intégré dans un microphone - Google Patents

Prothèse auditive comportant un commutateur magnétique intégré dans un microphone Download PDF

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Publication number
EP3104626A1
EP3104626A1 EP15171725.3A EP15171725A EP3104626A1 EP 3104626 A1 EP3104626 A1 EP 3104626A1 EP 15171725 A EP15171725 A EP 15171725A EP 3104626 A1 EP3104626 A1 EP 3104626A1
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EP
European Patent Office
Prior art keywords
electroacoustic transducer
switch
hearing aid
housing
magnetically actuatable
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.)
Withdrawn
Application number
EP15171725.3A
Other languages
German (de)
English (en)
Inventor
Christian Frei
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.)
Sonova Holding AG
Original Assignee
Sonova AG
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 Sonova AG filed Critical Sonova AG
Priority to EP15171725.3A priority Critical patent/EP3104626A1/fr
Publication of EP3104626A1 publication Critical patent/EP3104626A1/fr
Withdrawn legal-status Critical Current

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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
    • H04R25/603—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of mechanical or electronic switches or control elements
    • 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
    • H04R2225/021—Behind the ear [BTE] hearing aids
    • 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
    • H04R2225/023—Completely in the canal [CIC] hearing aids
    • 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
    • H04R2225/025—In the ear hearing aids [ITE] hearing aids
    • 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
    • H04R2225/57—Aspects of electrical interconnection between hearing aid 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
    • H04R2225/61—Aspects relating to mechanical or electronic switches or control elements, e.g. functioning
    • 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
    • H04R25/609—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of circuitry

Definitions

  • the present invention relates to a hearing aid, particularly to a hearing aid in which a magnetically actuatable switch and an electroacoustic transducer form a module that comprises at least one electric contact that is shared between said electroacoustic transducer and said magnetically actuatable switch.
  • hearing aid shall be understood as a device to be worn at the vicinity or directly within the ear of a person to improve the individual hearing capacity of this person. Such an improvement may include the prevention of the receiving of certain acoustic signals in terms of ear protection.
  • hearing devices can be worn, for instance, behind the ear (BTE), within the ear (ITE) or completely within the ear (CIC).
  • BTE behind the ear
  • ITE within the ear
  • CIC completely within the ear
  • IIC invisible in the canal
  • Hearing aids normally comprise at least one microphone as electroacoustic input transducer; at least one speaker - usually called receiver - as electroacoustic output transducer; and an electronic signal processing circuitry, connected with said microphone and said speaker, for the processing and manipulation of electronic signals.
  • This electronic signal processing circuitry may comprise analogue or digital signal processing devices. Said elements are usually arranged within at least one main case or shell of the hearing device.
  • the electronic signal processing circuit performs various signal processing functions. Such signal processing functions can include amplification, background noise reduction, tone control, etc.
  • the signal processing functions of current hearing aids can be provided with the option of adjustable operational modes or parameters or characteristics, thus allowing user customization of the hearing aids or their prompt adaptive response to given, changeable environment conditions.
  • Some of the operational modes or parameters or characteristics which can be programmed to be modifiable include selective signal input, tone control or volume control. Selective signal input can be implemented, for instance whenever a phone is used in connection with a hearing aid, by switching from a first operational mode wherein the microphone acoustically receives the sound to a second operational mode wherein, instead, a coil electromagnetically picks up the sound, normally via a tele-coil.
  • a manual switch can be provided which allows to achieve mode or characteristic control by manual manipulation of the switch by the user. Touching and displacing by the hearing aid wearer of such manual switches can enable some adjustment.
  • magnetically activated switches are made cooperate with corresponding magnetic actuators.
  • magnetic actuators are held by a user and are brought by the user in the effective proximity of hearing aid.
  • the magnetic switches are conceived in a way that, when sensing a magnetic field threshold and/or change thereof, they determine a related mode, parameter or characteristic switching.
  • magnetic switches are incorporated in hearing devices by mounting them on circuit boards in positions such that they remain physically separate from other electromagnetic components.
  • state of the art magnetic switches have an own housing and are positioned on circuit boards or substrates in respective locations which are spatially distinct from those allocated to other hearing aid components such as electroacoustic transducers or electrical signal processing elements.
  • Document WO 96/07295 A1 shows a hearing aid device whose components each have respective, spatially separate housings, as well as distinct signal processing and control processing circuitries, as it can be derived from Figure 3 , for instance.
  • the configuration is such that
  • the layout of the hearing aid devices designed according to the teachings of WO 96/07295 is such that additional space within the main casing or shell is required if mounting of a magnetic switch is envisaged.
  • This additional space requirement brings about the necessity of providing the hearing aid device with a bulkier main casing or shell, which proves to be, as above explained, a major drawback in the relevant technical field.
  • dedicated additional wiring such as so-called litzwires, for connecting the switch configured to automatically adjust the hearing aid's operational modes are usually free-floating within a hearing aid's main casing or shell.
  • the resulting, somehow chaotic distribution of wires within the main casing or shell is strongly undesirable and adversely affects case or shell accessibility.
  • the proliferating of wires within the case or shell entails complications in carrying out the manufacturing steps, including gluing or generally affixing the sensor to a faceplate or support.
  • chaotic wiring can cause unpredictable mechanical feedback problems.
  • the assembly configuration of the hearing aids presently in use is such that faceplate space -or the space taken up by the electric components of such devices- is not rationalized, particularly when it is required that the hearing aids include a magnetic switch, to achieve the automatic or semi-automatic adjustment of the operational parameters of the signal processing circuitry. None of the current hearing aids effectively solves the problem of integrating such magnetic switches in a way that the incorporation thereof does not adversely result in additional space needed within the casing or shell of the hearing aids.
  • a major objective of the present invention is to provide a compact design for a hearing aid that exploits at the best the space available within the device's casing or shell.
  • the inventive solution basically requires to combine an electroacoustic transducer with a magnetic switch in a single module in which the transducer and the switch share electric contacts, e.g. power supply contacts.
  • the physical coupling of a magnetically actuatable switch with an electroacoustic transducer according to the present invention reduces advantageously the number of production steps required to effectively secure and connect components within a hearing aid's casing or shell and the number of wires necessary to establish an electrical connection of such switch to the other components. As a consequence, also repair processes are simplified.
  • a Behind-the-Ear (BTE) hearing aid 10 normally comprises a casing 2 which accommodates a multiplicity of electric components.
  • a casing 2 for ITEs, CICs and IICs can alternatively be designated as a shell.
  • Such a multiplicity of electric components generally comprises an energy storage device 6, such as a battery or accumulator, which is accommodated in a respective compartment.
  • a hearing aid such as the one of Figure 1 usually comprises a first electroacoustic transducer 1, such as a microphone, for converting sound waves into electrical signals.
  • the casing 2 of the hearing device usually comprises a second electroacoustic transducer 1', namely a receiver, for converting electrical signals into sound waves compatible with human hearing and reception thereof by the hearing aid's user.
  • a signal processing circuitry 3 typically comprising a processor - in digital hearing aids also called digital signal processor (DSP) - is configured to receive from an electroacoustic transducer 1, e.g. a microphone, an electrical input signal. The electrical input signal results from the conversion of input sound waves into electrical signals.
  • the signal processing circuitry 3 provides an electroacoustic transducer 1', e.g. a receiver, with an electric output signal. The receiver converts the electrical output signals into sound waves usually transmitted to the user's eardrum.
  • a conventional Behind-the-Ear (BTE) hearing aid 10 as portrayed in Figure 1A can also comprise a manual switch 9 allowing the user to manually change some signal processing settings sent to the signal processing circuitry 3.
  • Such manual switches are practical and effective only to the extent that the corresponding hearing aids provide enough accessibility to allow engagement by a user's finger or similar with some activation means on the switches, such as a lever or a push button.
  • Completely in the ear (CIC) hearing aids in particular, as well as within the ear (ITE) hearing aids for some designs are generally positioned in a way that manual switches do not represent a valid solution.
  • Analogous considerations apply, of course, to so-called invisible in the canal (IIC) hearing aids.
  • Even BTE hearing aids as shown in Figure 1A can additionally comprise non-manually actuated switches, for instance magnetic switches, for adjusting the operational parameters of the signal processing circuitry 3.
  • FIG. 1B schematically represents a known within the ear (ITE) hearing aid 10 which, mutatis mutandis, comprises within a casing or shell 2 the same components described in connection with the example of Figure 1A .
  • the settings and operational parameters of the signal processing circuitry 3 are substantially adjusted by a sensor or switch 4 which is not intended to be manually operated and can be, for instance, a magnetically actuatable switch instructing operational parameter changes from remote, following the detection of a corresponding change of an imparted magnetic field.
  • switches for the automatic or semi-automatic adjustment of operational parameters of the signal processing circuitry 3, such as magnetic actuatable switches 4, are positioned within the casing 2 in respective housings which are disposed spatially separate with respect to the housings of all other hearing aid components.
  • the housing of switches 4 is spatially decoupled and separate from that of input electroacoustic transducer 1 and/or output electroacoustic transducer 1'.
  • a hearing aid according to the present invention comprises a casing 2, otherwise designated as shell, accommodating at least an electroacoustic transducer; signal processing circuitry 3 and a magnetically actuatable switch 4.
  • the electroacoustic transducer can be a microphone 1; alternatively, it can be a receiver 1'.
  • the hearing aid according to the present invention can comprise both a microphone 1 and a receiver 1'.
  • an electroacoustic transducer can be also provided with both functionalities of a microphone and a receiver integrated into one component.
  • a microphone can be any kind of microphone suitable to a hearing aid, such as for instance an electret condenser microphone or a silicon microphone, usually designated as MEMS microphone.
  • the signal processing circuitry 3 typically comprises a processor, or DSP, and is configured to receive from the at least one electroacoustic transducer 1 an electrical input signal and/or to provide the at least one electroacoustic transducer 1' with an electric output signal.
  • an electrical input signal typically is the result of a conversion of sound waves picked up by a microphone 1 into an electrical signal, to be further elaborated by the processing circuitry 3; whereas an electrical output signal transmitted from the processing circuitry 3 is used by a receiver 1' for conversion into sound waves optimized for the hearing aid's user.
  • the magnetically actuatable switch 4 of the hearing aid according to the present invention can be, for example, any of a GMR switch; a TMR switch; an AMR switch; a reed switch or a Hall effect sensor.
  • any type of magneto-resistive switch is in principle suitable to implement the magnetically actuatable switch 4 of the present invention.
  • the hearing aid according to the present invention is structured in a way that the magnetically actuatable switch 4 and the electroacoustic transducer 1, 1' advantageously form a single module 50, as it is portrayed in Figure 2 .
  • Figure 2 represents one preferred embodiment of the present invention wherein the electroacoustic transducer is a microphone 1.
  • the at least one electroacoustic transducer can alternatively be a receiver 1', or even an electroacoustic transducer encompassing both the functions of a microphone and a receiver.
  • the configuration is such that the single module 50 formed by the magnetically actuatable switch 4 and the electroacoustic transducer 1, 1' comprises at least one electric contact 8', 8" that is advantageously shared between the electroacoustic transducer 1, 1' and the magnetically actuatable switch 4.
  • the one common module 50 as above defined preferably comprises a housing 5 of the electroacoustic transducer 1, 1'.
  • the module 50 comprises the housing 5 of the microphone 1.
  • the magnetically actuatable switch 4 such as a GMR sensor
  • the magnetically actuatable switch 4 is placed directly onto the printed circuit board of the electroacoustic transducer 1, 1'.
  • a silicon die of the GMR sensor is placed directly onto the printed circuit board of the microphone 1.
  • the silicon die of the GMR sensor is placed directly onto the printed circuit board of the microphone 1, preferably such GMR die shares the same printed circuit board as a preamplifier of the microphone 1.
  • the die of the GMR sensor can share the same printed circuit board as the MEMS' die.
  • the printed circuit board of the microphone 1 itself is not conductive; this allows to advantageously achieve a gain in the detection power of a sensor such as a GMR sensor.
  • a sound inlet of microphone 1 is indicated by reference number 7.
  • the at least one contact 8', 8" shared between the electroacoustic transducer 1, 1' and the magnetically actuatable switch 4 can be advantageously positioned at the housing 5 of the single module 50.
  • the shared electric contact 8', 8" can be configured to receive power for the electroacoustic transducer 1, 1' and for the magnetically actuatable switch 4; or it can be configured to form a common ground contact.
  • the housing 5 in the single module 50 advantageously comprises an array of electric contacts 8', 8", 8m and 8s.
  • Such an array of electric contacts 8', 8", 8m and 8s is preferably positioned at a contact area Ca of the housing 5 of the electroacoustic transducer 1, 1'.
  • Electric contacts 8', 8", 8m and 8s can be, for example, in the form of solder pads.
  • the contact area Ca incorporates at least common input electric contacts 8', 8" configured to receive power, both for the electroacoustic transducer 1, 1' and for the magnetically actuatable switch 4, from a power supply means such as a battery 6.
  • the contact area Ca can also advantageously incorporate output electrical contacts for transmission of signals out of the electroacoustic transducer 1, 1' and out of the magnetic switch 4.
  • one output electrical contact 8m is integrated in the housing 5 at the contact area Ca for outputting signals transmitted by the electroacoustic transducer 1, 1'; whereas a further output electrical contact 8s is integrated in the housing 5 at the contact area Ca for outputting signals transmitted by the magnetic switch 4.
  • the module 50 formed by magnetically actuatable switch 4 and by electroacoustic transducer 1, 1' is designed in a way that the switch 4 is secured to a wall of the housing 5 of the electroacoustic transducer 1, 1'.
  • the switch 4 can be secured to the housing 5 of the electroacoustic transducer 1, 1' by any suitable means of fixation or fastening.
  • the switch 4 is fixed to a wall of the housing 5 of the electroacoustic transducer 1, 1'.
  • the switch 4 can also be made integral with the housing 5, for instance by fixing it in the surrounding material of the housing 5, e.g. by embedding it in the housing's walls. Whatever the technique employed for securing the switch 4 to the housing 5, the resulting configuration will be such that at least one electric contact 8', 8" is shared between switch 4 and electroacoustic transducer 1, 1'.
  • the magnetically actuatable switch 4 can be disposed internal to the housing 5 of the at least one electroacoustic transducer 1, 1'.
  • the housing 5 of the electroacoustic transducer 1, 1' is made of a material that is magnetically conductive.
  • the magnetic switch 4 can easily detect a change in magnetic field and, as a consequence, instruct by transmission of a proportional signal the adjustment of operational parameters of the signal processing circuitry 3 whenever a threshold magnetic field or the change thereof is detected.
  • the housing 5 it is not an absolute requirement that the housing 5 be magnetically conductive in case the magnetically actuatable switch 4 is disposed in the housing.
  • the overall configuration of a hearing aid according to the present invention is also substantially compatible with an embodiment wherein a magnetically actuatable switch 4 is positioned in a housing 5 of the electroacoustic transducer 1, 1' that is at least partially magnetically shielded.
  • a magnetically actuatable switch 4 is positioned in a housing 5 of the electroacoustic transducer 1, 1' that is at least partially magnetically shielded.
  • an opening can also be advantageously provided in the housing 5.
  • the housing 5 can also advantageously be given a shape that biases the magnetic field in a way that the magnetic field is best detected by the magnetically actuatable switch 4.
  • the magnetically actuatable switch 4 can be disposed external to the housing 5 of the electroacoustic transducer 1, 1'.
  • the switch 4 can be fixed, for instance, to an external surface of a wall of the housing 5, in correspondence of the contact area Ca or adjacent thereto, the resulting configuration being anyhow such that at least one electric contact 8', 8" is shared between switch 4 and electroacoustic transducer 1, 1'.
  • the body of the switch 4 can also be used to provide for a closure of the housing 5 of the electroacoustic transducer 1, 1'.
  • a magnetically shielding element is interposed between the electroacoustic transducer 1, 1' and the magnetically actuatable switch 4.
  • a magnetically shielding element advantageously ensures that the change in magnetic field used for activating the magnetic switch 4 does not overly affect the user-friendly functioning of the electroacoustic transducer 1, 1'.
  • the entire housing 5 can be made of magnetically shielding material.
  • just the most relevant portion of the housing 5 at the interface between switch 4 and transducer 1, 1' can be made of magnetically shielding material.
  • the magnetically actuatable switch 4 is a GMR sensor.
  • the latest models of GMR-sensors available on the market are extremely sensitive to changes of magnetic fields, to the point that GMR-sensors come to perceive even the Earth's magnetic field. Accordingly, the use of a GMR-sensor can limit to a minimum the interferences between magnetic fields applied to the magnetic switches and electroacoustic transducers such as microphones 1. If any residual interference withstands, this just gives an indication to the user of the fact that the actuation of the magnetic switch 4 by application of a given magnetic field has actually succeeded, at the most for the short timeframe employed for applying such magnetic field.
  • the magnetically actuatable switch 4 can be equipped with a magnetic flux intensifier so as to enhance its capacity to detect even weak or very weak magnetic fields.
  • the magnetically actuatable switch 4 and the electroacoustic transducer 1, 1' each maintain their respective functionality, but the spatial coupling between them allows to save on faceplate space taken up by components, which is crucial in the present technical field.
  • magnetic switch 4 and electroacoustic transducer 1, 1' allows to save on number of required electrical connections and, proportionally, on number of wires required to connect the components of the hearing aid 10 between themselves and with a power supply, such as a battery 6.

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  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Headphones And Earphones (AREA)
EP15171725.3A 2015-06-11 2015-06-11 Prothèse auditive comportant un commutateur magnétique intégré dans un microphone Withdrawn EP3104626A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15171725.3A EP3104626A1 (fr) 2015-06-11 2015-06-11 Prothèse auditive comportant un commutateur magnétique intégré dans un microphone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP15171725.3A EP3104626A1 (fr) 2015-06-11 2015-06-11 Prothèse auditive comportant un commutateur magnétique intégré dans un microphone

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EP3104626A1 true EP3104626A1 (fr) 2016-12-14

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996007295A1 (fr) 1994-08-31 1996-03-07 Argosy Electronics Inc. Appareil et procede pour la commande magnetique d'une prothese auditive
WO2000032009A2 (fr) * 1998-11-25 2000-06-02 Insonus Medical, Inc. Appareil auditif semi-permanent dispose dans le conduit auditif
EP1613125A2 (fr) * 2004-07-02 2006-01-04 Sonion Nederland B.V. Assemblage de microphone avec élément activable magnétiquement pour la commutation du signal et l'indication du champ
US20120087526A1 (en) * 2010-10-08 2012-04-12 Starkey Laboratories, Inc. Housing for a standard fit hearing assistance device
US20130129128A1 (en) * 2011-11-23 2013-05-23 Insound Medical, Inc. Canal hearing devices and batteries for use with same
DE202014002530U1 (de) * 2014-03-24 2014-05-15 Phonak Ag Im Gehörgang zu tragendes Hörgerät

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996007295A1 (fr) 1994-08-31 1996-03-07 Argosy Electronics Inc. Appareil et procede pour la commande magnetique d'une prothese auditive
WO2000032009A2 (fr) * 1998-11-25 2000-06-02 Insonus Medical, Inc. Appareil auditif semi-permanent dispose dans le conduit auditif
EP1613125A2 (fr) * 2004-07-02 2006-01-04 Sonion Nederland B.V. Assemblage de microphone avec élément activable magnétiquement pour la commutation du signal et l'indication du champ
US20120087526A1 (en) * 2010-10-08 2012-04-12 Starkey Laboratories, Inc. Housing for a standard fit hearing assistance device
US20130129128A1 (en) * 2011-11-23 2013-05-23 Insound Medical, Inc. Canal hearing devices and batteries for use with same
DE202014002530U1 (de) * 2014-03-24 2014-05-15 Phonak Ag Im Gehörgang zu tragendes Hörgerät

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