EP0585485A1 - Hearing-aid device - Google Patents

Hearing-aid device Download PDF

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Publication number
EP0585485A1
EP0585485A1 EP92115003A EP92115003A EP0585485A1 EP 0585485 A1 EP0585485 A1 EP 0585485A1 EP 92115003 A EP92115003 A EP 92115003A EP 92115003 A EP92115003 A EP 92115003A EP 0585485 A1 EP0585485 A1 EP 0585485A1
Authority
EP
European Patent Office
Prior art keywords
hearing aid
elements
remote control
control
circuit board
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
EP92115003A
Other languages
German (de)
French (fr)
Other versions
EP0585485B1 (en
Inventor
Hans-Joachim Dipl.-Ing. Weiss
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.)
Sivantos GmbH
Original Assignee
Siemens Audioligische Technik GmbH
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 Siemens Audioligische Technik GmbH filed Critical Siemens Audioligische Technik GmbH
Priority to AT92115003T priority Critical patent/ATE137380T1/en
Priority to DK92115003.3T priority patent/DK0585485T3/en
Priority to EP92115003A priority patent/EP0585485B1/en
Priority to DE59206127T priority patent/DE59206127D1/en
Priority to JP5218689A priority patent/JPH06311598A/en
Publication of EP0585485A1 publication Critical patent/EP0585485A1/en
Application granted granted Critical
Publication of EP0585485B1 publication Critical patent/EP0585485B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • H04R25/55—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception using an external connection, either wireless or wired
    • H04R25/558—Remote control, e.g. of amplification, frequency
    • 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
    • H04R25/603—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
    • 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
    • H04R25/607—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of earhooks

Definitions

  • the invention relates to a hearing aid with a housing and electrical components arranged therein, such as a microphone, amplifier device, receiver, power source, switching, adjusting and / or regulating elements or the like.
  • the electrical contacts of the hearing aid components are connected by electrical lead wires to the spring contacts of the power source and to the connections of a printed circuit board which forms an electrical circuit.
  • Control elements such as actuators, potentiometers, switches, can be soldered either directly to the circuit board or by means of strands or flexible conductors to the circuit board or its conductor tracks.
  • DE-A-36 23 906 describes a hearing device, the components of which are contacted on the inside of the hearing device housing on at least one printed circuit board.
  • the printed circuit board itself is at least partially designed to be resilient, the components to be fastened being detachably held in contact between the resilient parts of the printed circuit board and a counterpart.
  • an elastic contact pad consisting of an elastic silicone mat with continuous, parallel embedded metal threads, so that when pressing the cushion, the upper ends of the metal threads, the contact pins of the components and the lower ends of the metal threads, the conductor tracks touch the circuit board. As a result, there is contact between the component and the circuit board.
  • EP-A-0 491 072 relates to a hearing aid device with at least one microphone, an amplifier device, a receiver and a power source and with further components designed as actuators, switches and / or control elements which are contacted on at least one printed circuit board inside the hearing device housing .
  • an anisotropic, electrically conductive plate, foil or mat-shaped body consisting of an electrically insulating matrix material with a uniformly distributed multitude of electrically conductive and perpendicular to the plates, foils - or mat-level fibers arranged.
  • the actuators and / or potentiometers and / or switches are arranged on the printed circuit board using the anisotropic body as a contact element.
  • This arrangement is intended to make the electrical connections between the components easier to assemble and without soldering operations, the components being easily exchangeably fastened and the structure of the switches and potentiometers themselves being simplified.
  • the intended anisotropic electrically conductive body is known from DE-B-26 52 683.
  • hearing aids for the hearing impaired with wireless remote control (EP-A-0 175 909) as well as remotely controllable, programmable hearing aid systems (DE-A-39 00 588) - consisting of a hearing aid with an amplifier contained therein and with a signal processing circuit, the transmission characteristics of which to any The point in time can be determined by a set of control parameters, and is also known from an external control device with a transmitter for the wireless transmission of control parameters to the hearing device and a receiving circuit arranged in the hearing device for recording the control parameters.
  • the object of the invention is to provide a hearing aid of the type mentioned at the outset with easy-to-assemble connections of the components, in particular of the operating elements, such as switches, potentiometers, actuators, solder connections being avoidable and the components being arranged in the hearing aid housing in an easily replaceable manner, and the hearing aid equipped with operating elements can be retrofitted with a remote control or can be implemented as a conventional control unit or as a remote-controlled hearing aid.
  • the operating elements such as switches, potentiometers, actuators, solder connections being avoidable and the components being arranged in the hearing aid housing in an easily replaceable manner
  • the hearing aid equipped with operating elements can be retrofitted with a remote control or can be implemented as a conventional control unit or as a remote-controlled hearing aid.
  • Control elements such as switches, adjusting elements, volume controls (potentiometers) or the like, are arranged on a printed circuit board via solderless plug connections or can be contacted by means of an anisotropic electrically conductive body against conductor tracks of the printed circuit board, the anisotropic body made of an electrically insulating matrix material with a distributed therein Variety of electrically conductive fibers or the like.
  • the hearing aid for remote control can be designed or converted in such a way that control elements which can be soldered or contacted without soldering can be exchanged or replaced by receiving modules (remote control or remote control receiving elements) via the plug connections or the anisotropic body.
  • control elements are mounted solderlessly in the hearing device housing.
  • the electrical operating or components can be assembled by means of plug connections.
  • the components have plug connections and are inserted with them into associated plug connections of the printed circuit board, so that, in addition to the holder, the components are also contacted.
  • the solderless assembly and electrical connection of the operating or components to a printed circuit board takes place by means of an anisotropic, electrically conductive body which is between the electrical connections of the operating or components and the Tapping the conductor tracks or directly the conductor tracks of a printed circuit board or a carrier of the conductor tracks is arranged in the hearing device. If a contact pressure is established between the components, the anisotropic body and the conductor tracks or conductor track connections, for example by means of a holding device or a screw connection, a conductive connection results from the conductor tracks via the aligned electrically conductive fibers of the anisotropic body to the electrical connections of the components. or controls.
  • the fibers embedded in the matrix material in the direction of the contact pressure enable an electrically conductive connection and pressure-sensitive electrical contact points are formed in the direction perpendicular to the plane of the plate-shaped body, for example, there are no conductive connections in the directions lying in the plane of the plate-shaped body; in this plane the matrix material forms a sufficiently high insulating resistance, so that a large number of electrical connections are possible in a small area.
  • the invention thus makes it possible for a hearing aid device initially equipped with conventional control elements to be retrofitted with a remote control at a later point in time. So far, the hearing aid wearer had to purchase another special hearing aid in which the remote control is a fixed part of the amplifier.
  • the hearing aid according to the invention is designed to be digitally programmable / adjustable and the operating elements e.g. Are connected to the amplifier via contact mats (anisotropic body)
  • a hearing aid acoustician can also upgrade a hearing aid device designed according to the invention by installing the remote control receiver modules by simply replacing (with the same volume requirement).
  • the remote control receiver modules then act on the amplifier device like the conventional control elements.
  • the remote control receiver modules are built into the hearing aid housing, which is compatible with the conventional controls.
  • the hearing aid according to FIGS. 1 to 3 consists of a housing 1, for example formed from housing shells 19, in which the electrical components, namely a microphone 2, an amplifier device 3, a receiver 4 and a power source / battery 5 are arranged.
  • the amplifier device 3 comprises electronic components which are known per se and are arranged in a circuit and are arranged in particular on a printed circuit board 10 and with the conductor tracks of which control elements can also be contacted.
  • conventional controls are provided, e.g. a so-called MTO switch 6 for switching on the hearing aid (microphone operation), for switching over to telephone operation and for switching off the hearing aid (O position).
  • the hearing aid device has control elements 7. These control elements are e.g. accessible via a cover flap 17 hinged to the housing 1. This protrudes from the housing 1 e.g. Actuator or switching means of a volume control / potentiometer 8 in the form of a wheel.
  • the electrical parts of the control elements are contacted with the amplifier circuit either via solderless, detachable connections such as plug connections 9 or via so-called contact mats of an anisotropic body 11, as shown in more detail in FIG. 15 are switching contacts of the MTO switch 6 and 16 are electrical connections of the volume control 8 to the amplifier device 3.
  • the hearing aid For wearing on the ear, the hearing aid has a carrying hook 18 at one end.
  • the conventional operating elements for remote control of the hearing aid are replaced by remote control receiver modules 12, 12 ', 12''and12''.
  • the hearing aids according to the invention can be manufactured by the manufacturer both as conventional operating devices or as remote-controlled hearing aids, with the structure remaining the same. There is also the option of retrofitting the devices if required.
  • the electronic remote control receiver modules can also be designed as transmitter and receiver components, as laser or photodiodes with associated electronic control and signal processing or as optoelectronically integrated chips.
  • control elements such as switches 6, control elements 7, potentiometers 8 are arranged in a frame 13 of the hearing aid so that they can be replaced without soldering, in such a way that the remote control receiving elements 12 or the like can be inserted into the spaces 14 of the control elements which can be plugged in or contacted without soldering.
  • the remote control receiving elements 12 are designed in the form of small receiver capsules and in the size of the operating elements to be replaced.
  • a remote control receiver module 12 with a plurality of contacts 27 is shown schematically in FIGS.
  • an anisotropic body 11 is located on the conductor tracks 21 Side of the circuit board 10 and there is provided a switching means 26 designed as a wiper, which can scan electrically conductive wiper taps 23 with its contact. Contacts 24 are guided through a contact plate 22 from the wiper taps 23, these contacts 24 abutting against the anisotropic body 11 in a conductive connection. In the switch position shown, there is a conductive connection to the conductor track 21 from the electrical contact of the switching means 26 via the metallic wiper tap 23, at a contact region 25 of the anisotropic body 11.
  • a support plate of the circuit board 10 is designated by 20.

Abstract

A hearing aid is proposed which can be converted from a manually operable device into a remote-controllable device. For this purpose, the conventional operating elements such as MTO switch (6), gain control (7), volume control (8) or the like can be exchanged for remote-control receiving elements (12). <IMAGE>

Description

Die Erfindung betrifft ein Hörhilfegerät mit einem Gehäuse und darin angeordneten elektrischen Bauelementen, wie Mikrofon, Verstärkereinrichtung, Hörer, Stromquelle, Schalt-, Stell- und/oder Regelelementen od. dgl.The invention relates to a hearing aid with a housing and electrical components arranged therein, such as a microphone, amplifier device, receiver, power source, switching, adjusting and / or regulating elements or the like.

Bei bekannten Hörgeräten werden die elektrischen Kontakte der Hörgerätebauteile durch elektrische Leitungsdrähte mit den Federkontakten der Stromquelle und Anschlüssen einer Leiterplatte, die einen elektrischen Schaltkreis bildet, verbunden. Bedienelemente, wie Steller, Potentiometer, Schalter, können dabei entweder direkt auf die Leiterplatte oder mittels Litzen oder flexiblen Leitern an die Leiterplatte bzw. deren Leiterbahnen gelötet werden. Um einen raumsparenden Aufbau der Verstärkereinrichtung zu erreichen, ist es aus der DE-A-32 45 030 bekannt, für direkt an der Verstärkerplatine (Leiterplatte) anzubringende Bauteile in der Trägerplatte der Platine bzw. Leiterplatte Öffnungen vorzusehen, in die die Bauteile einsetzbar sind, wobei die Bauteile mit ihren elektrischen Anschlußdrähten oder Lötbeinchen mit den Leiterbahnen der Trägerplatte verlötet werden, während die Bauteile selbst in die Öffnungen der Trägerplatte einklemmbar sein sollen. Die bekannten Lösungen sind bezüglich der Kontaktierung der Bauteile aufwendig, wobei insbesondere die Herstellung der Lötverbindungen als nachteilig angesehen wird.In known hearing aids, the electrical contacts of the hearing aid components are connected by electrical lead wires to the spring contacts of the power source and to the connections of a printed circuit board which forms an electrical circuit. Control elements, such as actuators, potentiometers, switches, can be soldered either directly to the circuit board or by means of strands or flexible conductors to the circuit board or its conductor tracks. In order to achieve a space-saving construction of the amplifier device, it is known from DE-A-32 45 030 to provide openings in the carrier plate of the circuit board or circuit board for components to be attached directly to the amplifier circuit board (circuit board), in which the components can be inserted, the components with their electrical connecting wires or soldering legs being soldered to the conductor tracks of the carrier plate, while the components themselves should be able to be clamped into the openings in the carrier plate. The known solutions are complex in terms of contacting the components, the manufacture of the soldered connections in particular being regarded as disadvantageous.

Die DE-A-36 23 906 beschreibt ein Hörgerät, dessen Bauelemente im Inneren des Hörgerätegehäuses auf wenigstens einer Leiterplatte kontaktiert sind. Um ein Auflöten der Bauelemente an der Leiterplatte vermeiden zu können, wird die Leiterplatte selbst wenigstens teilweise federnd ausgebildet, wobei die zu befestigenden Bauelemente lösbar zwischen den federnden Teilen der Leiterplatte und einem Gegenstück kontaktierend gehaltert werden. Dabei kann zwischen der Leiterplatte und dem Gegenstück ein elastisches Kontaktkissen, bestehend aus einer elastischen Silikonmatte mit durchlaufenden, parallel eingelagerten Metallfäden, vorgesehen sein, so daß beim Zusammenpressen des Kissens die oberen Enden der Metallfäden die Kontaktbeinchen der Bauelemente und die unteren Enden der Metallfäden die Leiterbahnen der Leiterplatte berühren. Dadurch besteht Kontakt zwischen dem Bauelement und der Leiterplatte.DE-A-36 23 906 describes a hearing device, the components of which are contacted on the inside of the hearing device housing on at least one printed circuit board. In order to be able to avoid soldering the components onto the printed circuit board, the printed circuit board itself is at least partially designed to be resilient, the components to be fastened being detachably held in contact between the resilient parts of the printed circuit board and a counterpart. It can be provided between the circuit board and the counterpart, an elastic contact pad, consisting of an elastic silicone mat with continuous, parallel embedded metal threads, so that when pressing the cushion, the upper ends of the metal threads, the contact pins of the components and the lower ends of the metal threads, the conductor tracks touch the circuit board. As a result, there is contact between the component and the circuit board.

Die EP-A-0 491 072 betrifft ein Hörhilfegerät mit wenigstens einem Mikrofon, einer Verstärkereinrichtung, einem Hörer und einer Stromquelle sowie mit weiteren, als Steller, Schalter und/oder Regelelemente ausgebildeten Bauelementen, die im Inneren des Hörgerätegehäuses an wenigstens einer Leiterplatte kontaktiert sind. Zwischen den Leiterbahnen der Leiterplatte und Kontakten der gegen die Leiterplatte befestigbaren Bauelemente ist ein anisotroper, elektrisch leitender platten-, folien- oder mattenförmiger Körper, bestehend aus einem elektrisch isolierenden Matrixmaterial mit einer darin gleichmäßig verteilten Vielzahl von elektrisch leitenden und senkrecht zur Platten-, Folien- oder Mattenebene ausgerichteten Fasern, angeordnet. Die Steller und/oder Potentiometer und/oder Schalter sind unter Verwendung des anisotropen Körpers als Kontaktelement an der Leiterplatte angeordnet. Durch diese Anordnung sollen die elektrischen Verbindungen zwischen den Bauelementen montagefreundlicher und ohne Lötvorgänge herstellbar sein, wobei die Bauelemente leicht auswechselbar befestigt sind und der Aufbau der Schalter und Potentiometer selbst vereinfacht wird. Der vorgesehene anisotrope elektrisch leitende Körper ist aus der DE-B-26 52 683 bekannt.EP-A-0 491 072 relates to a hearing aid device with at least one microphone, an amplifier device, a receiver and a power source and with further components designed as actuators, switches and / or control elements which are contacted on at least one printed circuit board inside the hearing device housing . Between the conductor tracks of the circuit board and the contacts of the components that can be fastened against the circuit board is an anisotropic, electrically conductive plate, foil or mat-shaped body, consisting of an electrically insulating matrix material with a uniformly distributed multitude of electrically conductive and perpendicular to the plates, foils - or mat-level fibers arranged. The actuators and / or potentiometers and / or switches are arranged on the printed circuit board using the anisotropic body as a contact element. By This arrangement is intended to make the electrical connections between the components easier to assemble and without soldering operations, the components being easily exchangeably fastened and the structure of the switches and potentiometers themselves being simplified. The intended anisotropic electrically conductive body is known from DE-B-26 52 683.

Schließlich sind Hörgeräte für Hörbehinderte mit drahtloser Fernsteuerung (EP-A-0 175 909) sowie fernsteuerbare, programmierbare Hörgerätesysteme (DE-A-39 00 588) - bestehend aus einem Hörgerät mit darin enthaltenem Verstärker und mit einer Signalverarbeitungsschaltung, deren Übertragungscharakteristik zu jedem beliebigen Zeitpunkt durch einen Satz von Steuerparametern bestimmbar ist, und ferner aus einem externen Steuergerät mit einem Sender für die drahtlose Übertragung von Steuerparametern nach dem Hörgerät und einer in dem Hörgerät angeordneten Empfangsschaltung zur Aufnahme der Steuerparameter - bekannt.Finally, hearing aids for the hearing impaired with wireless remote control (EP-A-0 175 909) as well as remotely controllable, programmable hearing aid systems (DE-A-39 00 588) - consisting of a hearing aid with an amplifier contained therein and with a signal processing circuit, the transmission characteristics of which to any The point in time can be determined by a set of control parameters, and is also known from an external control device with a transmitter for the wireless transmission of control parameters to the hearing device and a receiving circuit arranged in the hearing device for recording the control parameters.

Aufgabe der Erfindung ist es, ein Hörhilfegerät der eingangs genannten Art mit montagefreundlichen Verbindungen der Bauelemente, insbesondere der Bedienelemente, wie Schalter, Potentiometer, Steller zu schaffen, wobei Lötverbindungen vermeidbar und die Bauelemente leicht auswechselbar im Hörgerätegehäuse angeordnet sind und wobei das mit Bedienelementen ausgerüstete Hörhilfegerät mit einer Fernbedienung nachrüstbar oder wahlweise als konventionelles Bediengerät oder als fernsteuerbares Hörhilfegerät ausführbar ist.The object of the invention is to provide a hearing aid of the type mentioned at the outset with easy-to-assemble connections of the components, in particular of the operating elements, such as switches, potentiometers, actuators, solder connections being avoidable and the components being arranged in the hearing aid housing in an easily replaceable manner, and the hearing aid equipped with operating elements can be retrofitted with a remote control or can be implemented as a conventional control unit or as a remote-controlled hearing aid.

Nach der Erfindung wird diese Aufgabe bei einem Hörhilfegerät der eingangs genannten Art dadurch gelöst, daß Bedienelemente, wie Schalter, Stellelemente, Lautstärkeregler (Potentiometer) od.dgl., über lötfreie Steckverbindungen an einer Leiterplatte angeordnet oder mittels eines anisotropen elektrisch leitenden Körpers gegen Leiterbahnen der Leiterplatte kontaktierbar sind, wobei der anisotrope Körper aus einem elektrisch isolierenden Matrixmaterial mit einer darin verteilten Vielzahl von elektrisch leitenden Fasern od.dgl. besteht, über die die Kontaktierung erfolgt, wobei das Hörhilfegerät zur Fernbedienung dadurch auslegbar oder umrüstbar ist, daß über die Steckverbindungen oder den anisotropen Körper lötfrei kontaktierbare bzw. kontaktierte Bedienelemente durch Empfangsbausteine (Fernbedien- bzw. Fernsteuerempfangselemente) austauschbar bzw. ersetzbar sind.According to the invention, this object is achieved in a hearing aid of the type mentioned in that Control elements, such as switches, adjusting elements, volume controls (potentiometers) or the like, are arranged on a printed circuit board via solderless plug connections or can be contacted by means of an anisotropic electrically conductive body against conductor tracks of the printed circuit board, the anisotropic body made of an electrically insulating matrix material with a distributed therein Variety of electrically conductive fibers or the like. exists, via which the contact is made, the hearing aid for remote control can be designed or converted in such a way that control elements which can be soldered or contacted without soldering can be exchanged or replaced by receiving modules (remote control or remote control receiving elements) via the plug connections or the anisotropic body.

Vorteilhafte Ausgestaltungen der Erfindung sind in den Patentansprüchen 2 bis 5 angegeben.Advantageous embodiments of the invention are specified in claims 2 to 5.

Bei einem erfindungsgemäßen Hörhilfegerät sind die Bedienelemente, gegebenenfalls auch weitere elektrische Bauelemente, lötfrei im Hörgerätegehäuse montiert. Nach einer ersten Ausführung kann dabei die Montage der elektrischen Bedien- bzw. Bauelemente durch Steckverbindungen erfolgen. Dazu weisen die Bauelemente Steckanschlüsse auf und werden mit diesen in zugehörige Steckanschlüsse der Leiterplatte eingesetzt, so daß neben der Halterung auch die Kontaktierung der Bauelemente erfolgt.In the case of a hearing aid according to the invention, the control elements, possibly also other electrical components, are mounted solderlessly in the hearing device housing. According to a first embodiment, the electrical operating or components can be assembled by means of plug connections. For this purpose, the components have plug connections and are inserted with them into associated plug connections of the printed circuit board, so that, in addition to the holder, the components are also contacted.

Gemäß einer anderen Ausführung erfolgt die lötfreie Montage und elektrische Verbindung der Bedien- bzw. Bauelemente zu einer Leiterplatte mittels eines anisotropen, elektrisch leitenden Körpers, der zwischen den elektrischen Anschlüssen der Bedien- oder Bauelemente und den Abgriffen der Leiterbahnen oder direkt den Leiterbahnen einer Leiterplatte bzw. eines Trägers der Leiterbahnen im Hörgerät angeordnet ist. Wird ein Kontaktdruck zwischen den Bauelementen, dem anisotropen Körper und den Leiterbahnen oder Leiterbahnanschlüssen hergestellt, beispielsweise durch eine Haltevorrichtung oder eine Schraubverbindung, so ergibt sich eine leitende Verbindung Von den Leiterbahnen über die ausgerichteten elektrisch leitenden Fasern des anisotropen Körpers zu den elektrischen Anschlüssen der Bau- oder Bedienelemente. Während die in Richtung des Kontaktdruckes in das Matrixmaterial eingebetteten Fasern eine elektrisch leitende Verbindung ermöglichen und sich druckempfindliche elektrische Kontaktpunkte in der zur Ebene des z.B. plattenförmigen Körpers senkrechten Richtung bilden, ergeben sich in den in der Ebene des plattenförmigen Körpers liegenden Richtungen keine leitenden Verbindungen; in dieser Ebene bildet das Matrixmaterial einen genügend hohen isolierenden Widerstand, so daß eine große Zahl von elektrischen Anschlüssen auf kleiner Fläche möglich ist.According to another embodiment, the solderless assembly and electrical connection of the operating or components to a printed circuit board takes place by means of an anisotropic, electrically conductive body which is between the electrical connections of the operating or components and the Tapping the conductor tracks or directly the conductor tracks of a printed circuit board or a carrier of the conductor tracks is arranged in the hearing device. If a contact pressure is established between the components, the anisotropic body and the conductor tracks or conductor track connections, for example by means of a holding device or a screw connection, a conductive connection results from the conductor tracks via the aligned electrically conductive fibers of the anisotropic body to the electrical connections of the components. or controls. While the fibers embedded in the matrix material in the direction of the contact pressure enable an electrically conductive connection and pressure-sensitive electrical contact points are formed in the direction perpendicular to the plane of the plate-shaped body, for example, there are no conductive connections in the directions lying in the plane of the plate-shaped body; in this plane the matrix material forms a sufficiently high insulating resistance, so that a large number of electrical connections are possible in a small area.

Bei dieser Ausführung ist eine einfache, zeitsparende Montage der Bedien- und Bauelemente des Hörgerätes ohne Lötvorgänge möglich. Ferner können im Servicefall Elemente einfach und zeitsparend ausgewechselt werden. Da die hohen Löttemperaturen entfallen, ist die Gefahr von Beschädigungen durch den Temperatureinfluß eliminiert und die Anforderungen an die Temperaturbeständigkeit der Baukomponenten sind geringer. Die Montage der Bau- bzw. Bedienelemente ist automatisierbar und dadurch können die Montagezeiten verkürzt sowie Montagefehler ausgeschaltet werden. Schließlich läßt sich die Ausgestaltung der Bauteile und der Aufbau des Hörgerätes dadurch wesentlich vereinfachen, daß Lötbeinchen an den Bauteilen sowie Litzen und Drahtverbindungen im Hörgerät zumindest weitgehend entfallen.In this embodiment, simple, time-saving assembly of the operating and components of the hearing aid is possible without soldering processes. Furthermore, elements can be replaced easily and in a time-saving manner when servicing. Since the high soldering temperatures are eliminated, the risk of damage due to the influence of temperature is eliminated and the requirements for the temperature resistance of the components are lower. The assembly of the construction and operating elements can be automated and thus the assembly times can be shortened and assembly errors can be eliminated. Finally, the design of the components and simplify the structure of the hearing aid considerably in that solder pins on the components as well as strands and wire connections in the hearing aid are at least largely eliminated.

Um ein derart aufgebautes, manuell bedienbares Hörhilfegerät sowohl herstellerseitig als auch noch zu einem späteren Zeitpunkt, z.B. auf nachträglichen Wunsch des Hörbehinderten, mit einer Fernbedienung oder Fernsteuerung nachrüsten zu können, ist es gemäß der Erfindung möglich, bestimmte elektrische Bauelemente des Hörhilfegerätes durch Empfangsbausteine der Fernbedienung bzw. einer fernsteuerbaren Programmiereinheit zu ersetzen oder auszutauschen.In order to construct a manually operated hearing aid of this type both at the manufacturer and at a later point in time, e.g. at a later request of the hearing impaired to be able to retrofit with a remote control or remote control, it is possible according to the invention to replace or replace certain electrical components of the hearing aid device with receiver modules of the remote control or a remote-controllable programming unit.

Damit ermöglicht es die Erfindung, daß ein zunächst mit konventionellen Bedienelementen ausgestattetes Hörhilfegerät zu einem späteren Zeitpunkt mit einer Fernsteuerung nachgerüstet werden kann. Bisher mußte der Hörgeräteträger ein anderes, spezielles Hörgerät erwerben, bei dem die Fernbedienung ein fester Teil des Verstärkers ist. Wenn das Hörhilfegerät gemäß der Erfindung digital programmierbar/einstellbar ausgebildet ist und die Bedienelemente z.B. über Kontaktmatten (anisotroper Körper) mit dem Verstärker verbunden sind, kann durch einfachen Austausch (bei gleichem Volumenbedarf) auch ein Hörgeräteakustiker ein erfindungsgemäß ausgelegtes Hörhilfegerät durch Einbau der Fernsteuer-Empfangsmodule aufwerten. Die Fernsteuer-Empfangsmodule wirken dann auf die Verstärkereinrichtung wie die konventionellen Bedienelemente. Die Fernsteuer-Empfangsmodule werden in das Hörgerätegehäuse, das mit den konventionellen Bedienelementen kompatibel ist, eingebaut.The invention thus makes it possible for a hearing aid device initially equipped with conventional control elements to be retrofitted with a remote control at a later point in time. So far, the hearing aid wearer had to purchase another special hearing aid in which the remote control is a fixed part of the amplifier. If the hearing aid according to the invention is designed to be digitally programmable / adjustable and the operating elements e.g. Are connected to the amplifier via contact mats (anisotropic body), a hearing aid acoustician can also upgrade a hearing aid device designed according to the invention by installing the remote control receiver modules by simply replacing (with the same volume requirement). The remote control receiver modules then act on the amplifier device like the conventional control elements. The remote control receiver modules are built into the hearing aid housing, which is compatible with the conventional controls.

Die Erfindung wird nachfolgend anhand der in der Zeichnung dargestellten Ausführungsbeispiele weiter erläutert.The invention is further explained below using the exemplary embodiments shown in the drawing.

Es zeigen:

Figur 1
ein manuell bedienbares Hörhilfegerät, das im Ausführungsbeispiel als ein hinter dem Ohr zu tragendes Hörhilfegerät (HdO-Gerät) gestaltet ist, dessen elektrische Bauelemente, insbesondere Bedienelemente lötfrei im Hörgerätegehäuse angebracht durch elektronische Fernsteuer-Empfangsmodule, zur Abänderung des manuell bedienbaren Hörhilfegerätes in ein fernbedienbares Gerät, ersetzbar sind,
Figur 2
ein gemäß der Erfindung ausgebildetes Hörhilfegerät nach Figur 1, bei dem die manuellen Bedienelemente durch Fernsteuer-Empfangsmodule ersetzt sind,
Figur 3
ein Hörhilfegerät, dessen Gehäuse aus Gehäuseschalen besteht, die mit einem Rahmen verbindbar sind, der eine Funktionsbaueinheit bildet, die elektrischen Hörgerätebauelemente aufnimmt und Räume zur Aufnahme der manuellen Bedienelemente bzw. für die Fernsteuer-Empfangsmodule aufweist,
Figuren 4 und 5
in unterschiedlichen Ansichten und in schematischer Darstellung ein Empfangsmodul für Fernbedien- oder Fernsteuersignale,
Figur 6
in vergrößertem Maßstab und im Schnitt ein Schaltelement unter Verwendung eines anisotropen Körpers.
Show it:
Figure 1
a manually operated hearing aid, which is designed in the exemplary embodiment as a hearing aid to be worn behind the ear (BTE device), the electrical components, in particular control elements, attached solderlessly in the hearing device housing by electronic remote control receiver modules, for changing the manually operated hearing aid device into a remote-controlled device are replaceable
Figure 2
1, in which the manual controls are replaced by remote control receiver modules,
Figure 3
a hearing aid device, the housing of which consists of housing shells which can be connected to a frame which forms a functional unit, which accommodates electrical hearing device components and has spaces for receiving the manual operating elements or for the remote control receiver modules,
Figures 4 and 5
in different views and in a schematic representation a receiving module for remote control or remote control signals,
Figure 6
on a larger scale and in section, a switching element using an anisotropic body.

Das Hörhilfegerät nach den Figuren 1 bis 3 besteht aus einem Gehäuse 1, beispielsweise gebildet aus Gehäuseschalen 19, in dem die elektrischen Bauelemente, nämlich ein Mikrofon 2, eine Verstärkereinrichtung 3, ein Hörer 4 und eine Stromquelle/Batterie 5 angeordnet sind. Die Verstärkereinrichtung 3 umfaßt an sich bekannte, in einem Schaltkreis angeordnete elektronische Bauteile, die insbesondere auf einer Leiterplatte 10 angeordnet sind und mit deren Leiterbahnen auch Bedienelemente kontaktierbar sind.The hearing aid according to FIGS. 1 to 3 consists of a housing 1, for example formed from housing shells 19, in which the electrical components, namely a microphone 2, an amplifier device 3, a receiver 4 and a power source / battery 5 are arranged. The amplifier device 3 comprises electronic components which are known per se and are arranged in a circuit and are arranged in particular on a printed circuit board 10 and with the conductor tracks of which control elements can also be contacted.

Gemäß Figur 1 sind konventionelle Bedienelemente vorgesehen, z.B. ein sogenannter MTO-Schalter 6 für das Einschalten des Hörgerätes (Mikrofonbetrieb), zum Umschalten auf Telefonbetrieb und zum Abschalten des Hörgerätes (O-Stellung). Zur Veränderung bzw. Einstellung der Charakteristiken der Verstärkereinrichtung bzw. des Verstärkers weist das Hörhilfegerät Stellelemente 7 auf. Diese Stellelemente sind z.B. über eine am Gehäuse 1 angelenkte Abdeckklappe 17 zugänglich. Aus dem Gehäuse 1 ragt das z.B. in Form eines Rädchens ausgebildete Betätigungsglied oder Schaltmittel eines Lautstärkereglers/Potentiometers 8.According to Figure 1, conventional controls are provided, e.g. a so-called MTO switch 6 for switching on the hearing aid (microphone operation), for switching over to telephone operation and for switching off the hearing aid (O position). In order to change or adjust the characteristics of the amplifier device or the amplifier, the hearing aid device has control elements 7. These control elements are e.g. accessible via a cover flap 17 hinged to the housing 1. This protrudes from the housing 1 e.g. Actuator or switching means of a volume control / potentiometer 8 in the form of a wheel.

Die Kontaktierung der elektrischen Teile der Bedienelemente mit dem Verstärkerschaltkreis erfolgt entweder über lötfreie, lösbare Verbindungen wie Steckverbindungen 9 oder über sogenannte Kontaktmatten eines anisotropen Körpers 11, wie in Figur 6 näher gezeigt ist. Mit 15 sind Schaltkontakte des MTO-Schalters 6 und mit 16 sind elektrische Anschlüsse des Lautstärkereglers 8 an die Verstärkereinrichtung 3 bezeichnet. Zum Tragen am Ohr weist das Hörgerät an einem Ende einen Traghaken 18 auf.The electrical parts of the control elements are contacted with the amplifier circuit either via solderless, detachable connections such as plug connections 9 or via so-called contact mats of an anisotropic body 11, as shown in more detail in FIG. 15 are switching contacts of the MTO switch 6 and 16 are electrical connections of the volume control 8 to the amplifier device 3. For wearing on the ear, the hearing aid has a carrying hook 18 at one end.

Gemäß Figur 2 sind für die Fernbedienung des Hörhilfegerätes die konventionellen Bedienelemente durch Fernsteuer-Empfangsmodule 12, 12', 12'' bzw. 12''' ersetzt. Dazu werden die konventionellen Schalter, Verstärkungssteller, Lautstärkeregler od.dgl. durch insbesondere in der Größe der Bedienelemente ausgelegte Empfangsbausteine, Fernbedien- bzw. Fernsteuer-Empfangsmodule, Sensoren, Sender od.dgl. ausgetauscht. Damit können die erfindungsgemäßen Hörhilfegeräte bei sonst gleichbleibendem Aufbau herstellerseitig sowohl als konventionelle Bediengeräte oder gleich als fernsteuerbare Hörgeräte gefertigt werden. Außerdem besteht die Möglichkeit, die Geräte auf Wunsch nachträglich in der Bauart umzurüsten.According to FIG. 2, the conventional operating elements for remote control of the hearing aid are replaced by remote control receiver modules 12, 12 ', 12''and12'''. To do this, the conventional switches, gain controls, Volume control or the like. by receiving modules, remote control or remote control receiving modules, sensors, transmitters or the like, in particular designed in the size of the control elements. exchanged. In this way, the hearing aids according to the invention can be manufactured by the manufacturer both as conventional operating devices or as remote-controlled hearing aids, with the structure remaining the same. There is also the option of retrofitting the devices if required.

Die elektronischen Fernsteuer-Empfangsmodule können auch als Sende- und Empfängerkomponenten, als Laser- oder Photodioden mit zugehöriger elektronischer Ansteuerung und Signalverarbeitung bzw. als optoelektronisch integrierte Chips ausgebildet sein.The electronic remote control receiver modules can also be designed as transmitter and receiver components, as laser or photodiodes with associated electronic control and signal processing or as optoelectronically integrated chips.

In vorteilhafter Ausgestaltung werden die Bedienelemente wie Schalter 6, Stellelemente 7, Potentiometer 8 lötfrei in einem Rahmen 13 des Hörhilfegerätes auswechselbar angeordnet, derart, daß in die Räume 14 der lötfrei steckbaren oder kontaktierbaren Bedienelemente die Fernsteuer-Empfangselemente 12 od.dgl. einsetzbar sind. In weiterer vorteilhafter Ausgestaltung sind die Fernsteuer-Empfangselemente 12 in Form kleiner Empfängerkapseln und in der Größe der zu ersetzenden Bedienelemente ausgebildet.In an advantageous embodiment, the control elements such as switches 6, control elements 7, potentiometers 8 are arranged in a frame 13 of the hearing aid so that they can be replaced without soldering, in such a way that the remote control receiving elements 12 or the like can be inserted into the spaces 14 of the control elements which can be plugged in or contacted without soldering. can be used. In a further advantageous embodiment, the remote control receiving elements 12 are designed in the form of small receiver capsules and in the size of the operating elements to be replaced.

Als Empfangsbausteine 12 können Phototransistoren, Induktionsspulen, Infrarot-Empfangsdioden, Photozellen, Empfangsantennen od.dgl. vorgesehen sein. In den Figuren 4, 5 ist ein Fernsteuer-Empfangsmodul 12 mit mehreren Kontakten 27 schematisch dargestellt.As receiving modules 12, phototransistors, induction coils, infrared receiving diodes, photocells, receiving antennas or the like can be used. be provided. A remote control receiver module 12 with a plurality of contacts 27 is shown schematically in FIGS.

Bei dem Schalter/Potentiometer nach Figur 6 liegt ein anisotroper Körper 11 auf der Leiterbahnen 21 tragenden Seite der Leiterplatte 10 auf und es ist ein als Schleifer ausgebildetes Schaltmittel 26 vorgesehen, das mit seinem Kontakt elektrisch leitende Schleiferabgriffe 23 abtasten kann. Von den Schleiferabgriffen 23 sind Kontakte 24 durch eine Kontaktplatte 22 hindurchgeführt, wobei diese Kontakte 24 in leitender Verbindung gegen den anisotropen Körper 11 anliegen. In der gezeichneten Schalterstellung besteht vom elektrischen Kontakt des Schaltmittels 26 über den metallischen Schleiferabgriff 23 eine leitende Verbindung zur Leiterbahn 21, bei einem Kontaktbereich 25 des anisotropen Körpers 11. Mit 20 ist eine Trägerplatte der Leiterplatte 10 bezeichnet.In the switch / potentiometer according to FIG. 6, an anisotropic body 11 is located on the conductor tracks 21 Side of the circuit board 10 and there is provided a switching means 26 designed as a wiper, which can scan electrically conductive wiper taps 23 with its contact. Contacts 24 are guided through a contact plate 22 from the wiper taps 23, these contacts 24 abutting against the anisotropic body 11 in a conductive connection. In the switch position shown, there is a conductive connection to the conductor track 21 from the electrical contact of the switching means 26 via the metallic wiper tap 23, at a contact region 25 of the anisotropic body 11. A support plate of the circuit board 10 is designated by 20.

Claims (5)

Hörhilfegerät mit einem Gehäuse (1) und darin angeordneten elektrischen Bauelementen, wie Mikrofon (2), Verstärkereinrichtung (3), Hörer (4), Stromquelle (5), Schalt- (6), Stell- (7) und/oder Regelelementen (8) od. dgl., wobei Bedienelemente, wie Schalter (6), Stellelemente (7), Lautstärkeregler (Potentiometer 8) od.dgl. über lötfreie Steckverbindungen (9) an einer Leiterplatte (10) angeordnet oder mittels eines anisotropen elektrisch leitenden Körpers (11) gegen Leiterbahnen der Leiterplatte kontaktierbar sind, wobei der anisotrope Körper (11) aus einem elektrisch isolierenden Matrixmaterial mit einer darin verteilten Vielzahl von elektrisch leitenden Fasern od.dgl. besteht, über die die Kontaktierung erfolgt, wobei das Hörhilfegerät zur Fernbedienung dadurch auslegbar oder umrüstbar ist, daß über die Steckverbindungen (9) oder den anisotropen Körper (11) lötfrei kontaktierbare bzw. kontaktierte Bedienelemente (6-8) durch Empfangsbausteine (Fernbedien- bzw. Fernsteuerempfangselemente 12) austauschbar bzw. ersetzbar sind.Hearing aid device with a housing (1) and electrical components arranged therein, such as a microphone (2), amplifier device (3), receiver (4), current source (5), switching (6), adjusting (7) and / or regulating elements ( 8) or the like., Where controls, such as switches (6), control elements (7), volume control (potentiometer 8) or the like. Arranged on a printed circuit board (10) via solderless plug connections (9) or can be contacted against conductor tracks of the printed circuit board by means of an anisotropic electrically conductive body (11), the anisotropic body (11) being made of an electrically insulating matrix material with a large number of electrically conductive ones distributed therein Fibers or the like exists, via which the contact is made, the hearing aid for remote control can be designed or retrofitted by using the plug-in connections (9) or the anisotropic body (11) for contactlessly contacted or contacted control elements (6-8) by receiving modules (remote control or Remote control receiving elements 12) are interchangeable or replaceable. Hörhilfegerät nach Anspruch 1, wobei zur Ausstattung als fernsteuerbares, programmierbares Hörhilfegerät Bedienelemente, wie Ein-/Aus-Schalter, MTO-Schalter (6), Verstärkungssteller (7), Lautstärkeregler (8) od.dgl., durch elektronische Empfangs- (12) und/oder Sendebausteine, Sende- und Empfängerkomponenten, Laser- oder Photodioden mit zugehöriger elektronischer Ansteuerung und Signalverarbeitung bzw. optoelektronisch integrierte Chips ersetzbar sind.Hearing aid according to claim 1, wherein for the equipment as a remotely controllable, programmable hearing aid, operating elements such as on / off switch, MTO switch (6), amplification controller (7), volume control (8) or the like, by electronic reception (12 ) and / or transmitter modules, transmitter and receiver components, laser or photodiodes with associated electronic control and signal processing or optoelectronically integrated chips can be replaced. Hörhilfegerät nach den Ansprüchen 1 oder 2, wobei die Bedienelemente, wie Schalter (6), Stellelemente (7), Potentiometer (8) lötfrei in einem Rahmen (13) des Hörhilfegerätes angeordnet und auswechselbar sind, derart, daß in die Räume (14) der lötfrei steckbaren oder kontaktierbaren Bedienelemente die Fernsteuerempfangselemente (12) od.dgl. einsetzbar sind.Hearing aid according to claims 1 or 2, wherein the operating elements, such as switches (6), adjusting elements (7), potentiometers (8) are arranged solderlessly in a frame (13) of the hearing aid and can be exchanged in such a way that into the rooms (14) the solderlessly pluggable or contactable controls, the remote control receiver elements (12) or the like. can be used. Hörhilfegerät nach Anspruch 3, wobei die Fernsteuerempfangselemente (12) in Form kleiner Empfängerkapseln und in der Größe der zu ersetzenden Bedienelemente ausgebildet sind.Hearing aid according to claim 3, wherein the remote control receiving elements (12) are designed in the form of small receiver capsules and in the size of the control elements to be replaced. Hörhilfegerät nach einem der Ansprüche 1 bis 4, wobei als Empfangsbausteine (12) Phototransistoren, Induktionsspulen, Infrarot-Empfangsdioden, Photozellen, Empfangsantennen od.dgl. vorgesehen sind.Hearing aid according to one of claims 1 to 4, wherein as receiving modules (12) phototransistors, induction coils, infrared receiving diodes, photocells, receiving antennas or the like. are provided.
EP92115003A 1992-09-02 1992-09-02 Hearing-aid device Expired - Lifetime EP0585485B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AT92115003T ATE137380T1 (en) 1992-09-02 1992-09-02 HEARING AID
DK92115003.3T DK0585485T3 (en) 1992-09-02 1992-09-02 Hearing aid
EP92115003A EP0585485B1 (en) 1992-09-02 1992-09-02 Hearing-aid device
DE59206127T DE59206127D1 (en) 1992-09-02 1992-09-02 Hearing aid
JP5218689A JPH06311598A (en) 1992-09-02 1993-09-02 Hearing aid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP92115003A EP0585485B1 (en) 1992-09-02 1992-09-02 Hearing-aid device

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EP0585485A1 true EP0585485A1 (en) 1994-03-09
EP0585485B1 EP0585485B1 (en) 1996-04-24

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AT (1) ATE137380T1 (en)
DE (1) DE59206127D1 (en)
DK (1) DK0585485T3 (en)

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JPH0269389A (en) * 1988-08-31 1990-03-08 Toyo Stauffer Chem Co Formation of saturated vapor of solid organometallic compound in vapor growth method
KR101125728B1 (en) * 2010-07-01 2012-03-27 박의봉 Earcap type wireless speaker device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027496A1 (en) * 1979-10-17 1981-04-29 Robert Bosch Gmbh Hearing aid device with a conductor plate acting as a carrier for conducting strips, and electrical and mechanical component parts and stages
DE3205686A1 (en) * 1982-02-17 1983-08-25 Robert Bosch Gmbh, 7000 Stuttgart HOERGERAET
DE3623906A1 (en) * 1986-07-15 1988-01-21 Siemens Ag Hearing aid
CH668154A5 (en) * 1985-08-15 1988-11-30 Gfeller Ag Apparate Fabrik Fla Hearing aid with electroacoustic transducer - fits behind ear and has facility for plugging in range of operational mode elements
US4920570A (en) * 1987-12-18 1990-04-24 West Henry L Modular assistive listening system
WO1990008448A1 (en) * 1989-01-11 1990-07-26 Tøpholm & Westermann APS Remote-controlled, programmable hearing aid system
EP0491072A1 (en) * 1990-12-18 1992-06-24 Siemens Aktiengesellschaft Hearing aid

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0027496A1 (en) * 1979-10-17 1981-04-29 Robert Bosch Gmbh Hearing aid device with a conductor plate acting as a carrier for conducting strips, and electrical and mechanical component parts and stages
DE3205686A1 (en) * 1982-02-17 1983-08-25 Robert Bosch Gmbh, 7000 Stuttgart HOERGERAET
CH668154A5 (en) * 1985-08-15 1988-11-30 Gfeller Ag Apparate Fabrik Fla Hearing aid with electroacoustic transducer - fits behind ear and has facility for plugging in range of operational mode elements
DE3623906A1 (en) * 1986-07-15 1988-01-21 Siemens Ag Hearing aid
US4920570A (en) * 1987-12-18 1990-04-24 West Henry L Modular assistive listening system
WO1990008448A1 (en) * 1989-01-11 1990-07-26 Tøpholm & Westermann APS Remote-controlled, programmable hearing aid system
EP0491072A1 (en) * 1990-12-18 1992-06-24 Siemens Aktiengesellschaft Hearing aid

Also Published As

Publication number Publication date
DE59206127D1 (en) 1996-05-30
EP0585485B1 (en) 1996-04-24
ATE137380T1 (en) 1996-05-15
JPH06311598A (en) 1994-11-04
DK0585485T3 (en) 1996-09-02

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