The present invention relates to a receiver facility for a hearing apparatus with a longish receiver and an earmold, which has a borehole, into which the receiver is inserted. The term hearing apparatus is understood here to mean in particular a hearing device, but also any other device for emitting sound which can be worn on the ear, like for instance a headset, earphones and suchlike.
Hearing devices are wearable hearing apparatuses which are used to assist the hard-of-hearing. In order to accommodate numerous individual requirements, various types of hearing devices are available such as behind-the-ear (BTE) hearing devices, hearing device with an external receiver (RIC: receiver in the canal) and in-the-ear (ITE) hearing devices, for example also concha hearing devices or completely-in-the-canal (ITE, CIC) hearing devices. The hearing devices listed as examples are worn on the outer ear or in the auditory canal. Bone conduction hearing aids, implantable or vibrotactile hearing aids are also available on the market. The damaged hearing is thus stimulated either mechanically or electrically.
The key components of hearing devices are principally an input converter, an amplifier and an output converter. The input converter is normally a receiving transducer e.g. a microphone and/or an electromagnetic receiver, e.g. an induction coil. The output converter is most frequently realized as an electroacoustic converter e.g. a miniature loudspeaker, or as an electromechanical converter e.g. a bone conduction hearing aid. The amplifier is usually integrated into a signal processing unit. This basic configuration is illustrated in
BTE hearing devices with an external receiver unit (RIC devices) require special attention in respect of the receiver unit. It is thus desirable for the external receiver unit to be able to be fixed into a so-called “Micro Earmold”, i.e. a very small model of an earmold.
In order also to meet the requirements in terms of acoustics, the external receiver unit is to be elastically mounted in the earmold. In addition, the external receiver unit should be protected against contaminations as a result of cerumen, sweat etc. The receiver unit should also be exchangeable and it is favorable for the purpose of protecting the receiver if a receiver and/or cerumen protection system can be attached to the receiver unit.
Patent application DE 10 2004 009 268 B3 discloses an ear insert for a hearing system. In accordance with acoustic conditions, a sound exit is molded in an otoplastic. A receiver integrated into the otoplastic can be exchangeably fastened in the otoplastic with the aid of an adapter.
The publication DE 85 18 681 U1 also discloses a hearing aid, the housing of which has a tapering diameter. Parts of the hearing aid are fastened in the otoplastic using a snap-action closure, which has a plurality of appendages resting on the outer periphery of the housing and which act as snap-in stages to which locking edges snap into place when inserting the housing into the otoplastic.
U.S. patent application RE38,351 E also describes a loudspeaker, which can be inserted into an ear with the aid of an elastic earpiece. A housing is inserted into the elastic earpiece, inside of which a receiver is located. The receiver itself is mounted in the housing with a foam material.
The object of the present invention consists in providing a receiver facility, with which the receiver is mounted in the earmold in a removable, acoustically favorable and sealing manner.
This object is achieved according to the invention by a receiver facility for a hearing apparatus with a longish receiver and an earmold, which has a borehole, into which the receiver is inserted, as well as a tubular connector, with the receiver for the most part being force-fitted with its longitudinal extension into the connector in a friction-locked fashion and the connector for its part being force-fitted into the borehole of the earmold in a friction-locked fashion.
The elastic connector not only ensures a simple exchangeability of the receiver in the earmold but instead also provides for the receiver to be for the most part acoustically decoupled from the earmold. The portion of solid-borne sound which is transmitted from the receiver via the earmold to the auditory canal walls of the user of the hearing apparatus is thus significantly reduced.
A cerumen protection element is preferably force-fitted into the connector at its sound exit side. As a result, the connector not only inheres the function of holding the receiver but also that of holding the cerumen protection system.
The connector can also comprise several ridges extending in a peripheral direction on its outer shell. As a result, very defined pressure and frictional forces can be exerted by the connector on the borehole of the earmold. The forces involved in force-fitting and extruding the connector into/out of the borehole of the earmold can thus be determined in the desired fashion.
The connector can also be manufactured from rubber or a rubbery-elastic plastic. In an elastic connector of this type, the receiver can be easily impressed. Similarly, the connector can then be easily force-fitted into the earmold.
In accordance with a similarly preferred embodiment, the connector seals the receiver in the earmold such that no contamination can enter the sound outlet from the side of the receiver facing the sound outlet of the receiver. As a result, the connector not only inheres a sealing function in respect of the side facing the ear drum, but also in respect of the side is directed outward when in the worn state.
It was already indicated that the above-described receiver facility is preferably used for a BTE hearing device with an external receiver which can be inserted into an auditory canal. A receiver of this type can however also be used for headsets, music playing devices and suchlike.
The present invention is described in more detail with reference to the appended drawings, in which;
The exemplary embodiment illustrated in more detail below represents a preferred embodiment of the present invention.
The cylindrical connector 11 has ridges 19 on its outer periphery which extend in the peripheral direction in the example selected. They are made of the same elastic material as the connector 11.
A defined borehole 20, which has approximately the same inner diameter as the connector 11 without the ridges 19, is located in the earmold 10. The unit consisting of receiver 14 and elastic connector 11 is force-fitted into this borehole 20. In this way, the ridges 19 press against the internal circumference of the earmold 10 and are accordingly impressed.
After assembling the unit consisting of receiver 14 and connector 11 into the earmold 10, a cerumen protection system 13 can be force-fitted into the recess of the connector 11 from the front side 12. The cerumen protection system 13 is embodied here to be funnel-shaped and has a membrane on its surface. The funnel of the cerumen protection system 13 is sufficient to reach the sound outlet connecting piece 17 of the receiver 14, so that the sound produced by the receiver 14 is guided outwards through the cerumen protection system 13 and the receiver is simultaneously protected against contaminations by means of the membrane of the cerumen protection system 13. In the event of contamination to the membrane of the cerumen protection system 13, this can be easily removed from the elastic connector 11 and exchanged.
A tool is preferably used to exchange the receiver 14, which is shown in
The tool 21 shown in
The receiver facility shown in
Number | Date | Country | Kind |
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10 2007 037 024 | Aug 2007 | DE | national |
The present application claims the benefit of a provisional patent application filed on Aug. 6, 2007, and assigned application No. 60/963,614. The present application also claims the benefit of a German application No. 10 2007 037 024.7 filed Aug. 6, 2007. Both of the applications are incorporated by reference herein in their entirety.
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Number | Date | Country | |
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20090041261 A1 | Feb 2009 | US |
Number | Date | Country | |
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60963614 | Aug 2007 | US |