CA2063806A1 - In-the-ear hearing aid with sound compensating channel - Google Patents
In-the-ear hearing aid with sound compensating channelInfo
- Publication number
- CA2063806A1 CA2063806A1 CA002063806A CA2063806A CA2063806A1 CA 2063806 A1 CA2063806 A1 CA 2063806A1 CA 002063806 A CA002063806 A CA 002063806A CA 2063806 A CA2063806 A CA 2063806A CA 2063806 A1 CA2063806 A1 CA 2063806A1
- Authority
- CA
- Canada
- Prior art keywords
- hearing aid
- channel
- compensating channel
- earphone
- compensating
- 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.)
- Abandoned
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
- H04R25/65—Housing parts, e.g. shells, tips or moulds, or their manufacture
- H04R25/652—Ear tips; Ear moulds
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B21/00—Teaching, or communicating with, the blind, deaf or mute
- G09B21/009—Teaching or communicating with deaf persons
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2460/00—Details of hearing devices, i.e. of ear- or headphones covered by H04R1/10 or H04R5/033 but not provided for in any of their subgroups, or of hearing aids covered by H04R25/00 but not provided for in any of its subgroups
- H04R2460/11—Aspects relating to vents, e.g. shape, orientation, acoustic properties in ear tips of hearing devices to prevent occlusion
-
- 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
- H04R25/45—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback
- H04R25/456—Prevention of acoustic reaction, i.e. acoustic oscillatory feedback mechanically
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Signal Processing (AREA)
- Otolaryngology (AREA)
- Neurosurgery (AREA)
- Acoustics & Sound (AREA)
- Manufacturing & Machinery (AREA)
- Educational Administration (AREA)
- Business, Economics & Management (AREA)
- Audiology, Speech & Language Pathology (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Headphones And Earphones (AREA)
- Stereophonic System (AREA)
- Details Of Audible-Bandwidth Transducers (AREA)
Abstract
ABSTRACT
The invention relates to an in-the-ear hearing aid for persons with impaired or defective hearing with a ear mold which contains a microphone, amplifier, earphone, battery compartment with battery and a compensating channel leading from inside to outside and which is covered by a cover plate. The compensating channel (2, 2A) encloses at least part of the sound outlet channel (4) from the earphone (5) either partially or completely.
Adjacent to this section (2A) is a further section (2B) which continues past the earphone (5) in the direction of the cover plate (3) and which is at least partially an integral part of a unit (6) which contains the earphone (5) and which simultaneously forms the transition between the two parts (2A, 2B) of the compensating channel.
The invention relates to an in-the-ear hearing aid for persons with impaired or defective hearing with a ear mold which contains a microphone, amplifier, earphone, battery compartment with battery and a compensating channel leading from inside to outside and which is covered by a cover plate. The compensating channel (2, 2A) encloses at least part of the sound outlet channel (4) from the earphone (5) either partially or completely.
Adjacent to this section (2A) is a further section (2B) which continues past the earphone (5) in the direction of the cover plate (3) and which is at least partially an integral part of a unit (6) which contains the earphone (5) and which simultaneously forms the transition between the two parts (2A, 2B) of the compensating channel.
Description
2B~3~6 In-the-ear hearing aid with sound compensating channel The invention relates to an in-thé-ear hearing aid for persons with impaired or defective hearing with an ear mold which ccntains a microphone, amplifier, earphone, battery compartment with battery and a compensating channel leading from the inside to the outside and which is covered by a cover plate.
Such hearing aids are already known. Such compensating channels are required for all in-the-ear hearing aids in order to establish sound and pressure compensation between the inside of the auditory canal and the surroundings, otherwise the person with impaired hearing may have the impression when talking that the ear is "closed".
These compensating channels simultaneously serve as a kind of low-pass filter, i.e. feedback of low frequencies, whereby gain is reduced for low frequencies.
This is often desired, because hearing losses are mostly restricted to high frequency ranges.
A person's own voice usually contains a high proportion of low frequencies. Transmission of sound from the head to the hearing aid must therefore be avoided if possible.
Such compensating channels have often been produced up to now by an additional hole next to the sound channel in the hearing aid. Production of these holes is extremely difficult and time-consuming.
A solution to this problem is described in FR-Al 2.596 644.
Holes are located in the tip of the ear mold in addition to the sound outlet channel, which utilizes the cavity between the earphone and ear mold wall in order to 20~3~
produce a link with the outside world via capillary tubes. Such capillary tubes are also called vents.
The nature of these capillary tubes means that they are difficult to produce, whether by drilling or when casting the ear mold.
The task of the invention is to create a hearing aid of the type mentioned at the start where the sound and pressure compensating channel can be produced much more easil~ and thus with reduced work or costs. In addition, it should be ensured that it is also possible to provide a compensating channel, i.e. a vent with at least certain dimensions, in cases where the hearing aid can be inserted in the auditory canal.
This is achieved by the invention due to the fact that the compensating channel partially or completely encloses at least part of the sound outlet channel from the earphone.
Refer to the other claims for further characteristics of the invention.
The invention will now be described in more detail on the basis of the enclosed drawings.
The drawings show the following:
Fig. 1 A schematic sectional view of an in-the-ear hearing aid in accordance with the invention;
Fig. 2 A schematic perspective view of the in-the-ear hearing aid;
.
.. ~ . .. . . .
- ' ' ' : -'. ' '. - .
. . , , : . . . .- : .. - . , -; . . :: ... . .. . . . - . .. - - ,, -. ~. . ., .. -, . .
.... . . . .
~Q~38~b Figs. 3, 4 and 5 Various configurations of sound outlet channel and compensating channel;
Fig. 6 A sectional view along the section line in Fig. 1;
Fig. 7 A further sectional view along the section line in Fig.
l;
Figs. 8~ and 8B
A unit in which the invention is realized;
Fig. 9 A partial section of the sound outlet of the hearing aid and Fig. 10 A view of the sound outlet channel and compensating channel from below. ~ -Fig. 1 shows a purely schematic sectional view of an in-the-ear hearing aid 1 in accordance with the invention with a compensating channel 2 and a cover plate 3 on which various components are mounted (not shown). The sound outlet channel 4 is located at the bottom end of the hearing aid.
Whereas previously sound outlet channels and compensating channels have been realized separately, it is now suggested in accordance with the invention to combine these two channels at the outlet.
This is shown particularly clearly by Fig. 2, where the sound outlet channel 4 is enclosed at least partially by an initial section of the compensating channel 2A. In addition, it is possible to schematically recognize the -: . ' . : - : .
.: . . ~ . -- .' - ~
-. . : .: : - -- - -.. . .
.' ' . - ' . . . ~ :: .
.
20~3~
earphone 5, around which at least one but preferably two sections of the compensating channel 2B are routed.
Figures 3, 4 and 5 show various configurations of the sound outlet channel 4A and various inlets 2A for the compensating channel.
In Fig. 3, the sound outlet channel 4A is located in the center and the compensating channel 2A possesses four inlets located around the sound outlet channel, for example.
In Fig. 4, the sound outlet channel 4A is arranged asymmetrically and is not completely surrounded by 3 inlets of the compensating channel 2A, for example.
In Fig. 5, the compensating channel 2A and sound outlet channel 4A are located next to each other and possess an approximately semi-circular cross-section.
As a result of these configurations, the sound outlet channel and compensating channel are clearly fixed with respect to the ear mold.
If we consider a section along the section line for Figures 6 and 7 in Fig. 1, we can see that the compensating channel (above the earphone) can be produced on the one hand by a continuous recess in the inner housing, designated here by 2C. Equally, however, the compensating channel 2D can be molded in the otoplastic mold. In this case, however, the bottom section 2A of the compensating channel is located below the earphone in the way shown in Figs. 1 and 2.
A particularly elegant solution for a combination of sound outlet channel and compensating channel is shown by unit 6 in Figs. 8A and 8B. This unit contains the earphone 5 and it is possible to see on the right side of , . ...................... ... . . .
. .
.
~ 2063~
the figure the sound outlet channel 4 and the compensating channel 2A, which continues inside the unit 6 as compensating channel 2B. This is in principle also intimated in Fig. 2.
Fig. 8B shows a sectional view along the section line in Fig. 8A. The earphone 5 is surrounded and held by the unit 6, preferably in the form shown. A compensating channel section 2B is molded in this unit. This section is shown with a rectangular cross-section, but may also possess an approximately semi-circular cross-section.
The bottom end of the in-the-ear hearing aid is shown in the sectional view in Fig. 9. It is again possi~le to see the sound outlet channel 4 and the compensating channel 2. A cerumen trap 8 is inserted in the bottom end of the hearing aid which can be closed off by a cap 9.
Fig. 10 shows the bottom end of the hearing aid from below, without the cover cap. It is again possible to see the sound outlet channel 4A, the compensating channel 2A
and the cerumen trap 8.
This new arrangement of the compensating channel in conjunction with the sound outlet channel eliminates the need for additional production steps in order to produce holes or channels for the compensating channel.
on the one hand, it is possible to produce one part of the compensating channel in a very simple way with the unit in accordance with Figs. 8A and 8B and the arrangement in accordance with Fig. 9i on the other hand, the remaining part of the compensating channel in - ~ . . .. - ~ . .
. ', ~ ' ' ' ' . " '' ' ' ': ''"' ''`- ' ' : :
- . . - .
'~ ~ ~ - ' . '" ' - ' -6 2~3~6 accordance with Fig. 6 or Fig. 7 can be produced very simply, either in the otoplastic mold or in the actual device housing itself.
This considerably simplifies the whole production procedure for a compensating channel.
. .
:: -.
Such hearing aids are already known. Such compensating channels are required for all in-the-ear hearing aids in order to establish sound and pressure compensation between the inside of the auditory canal and the surroundings, otherwise the person with impaired hearing may have the impression when talking that the ear is "closed".
These compensating channels simultaneously serve as a kind of low-pass filter, i.e. feedback of low frequencies, whereby gain is reduced for low frequencies.
This is often desired, because hearing losses are mostly restricted to high frequency ranges.
A person's own voice usually contains a high proportion of low frequencies. Transmission of sound from the head to the hearing aid must therefore be avoided if possible.
Such compensating channels have often been produced up to now by an additional hole next to the sound channel in the hearing aid. Production of these holes is extremely difficult and time-consuming.
A solution to this problem is described in FR-Al 2.596 644.
Holes are located in the tip of the ear mold in addition to the sound outlet channel, which utilizes the cavity between the earphone and ear mold wall in order to 20~3~
produce a link with the outside world via capillary tubes. Such capillary tubes are also called vents.
The nature of these capillary tubes means that they are difficult to produce, whether by drilling or when casting the ear mold.
The task of the invention is to create a hearing aid of the type mentioned at the start where the sound and pressure compensating channel can be produced much more easil~ and thus with reduced work or costs. In addition, it should be ensured that it is also possible to provide a compensating channel, i.e. a vent with at least certain dimensions, in cases where the hearing aid can be inserted in the auditory canal.
This is achieved by the invention due to the fact that the compensating channel partially or completely encloses at least part of the sound outlet channel from the earphone.
Refer to the other claims for further characteristics of the invention.
The invention will now be described in more detail on the basis of the enclosed drawings.
The drawings show the following:
Fig. 1 A schematic sectional view of an in-the-ear hearing aid in accordance with the invention;
Fig. 2 A schematic perspective view of the in-the-ear hearing aid;
.
.. ~ . .. . . .
- ' ' ' : -'. ' '. - .
. . , , : . . . .- : .. - . , -; . . :: ... . .. . . . - . .. - - ,, -. ~. . ., .. -, . .
.... . . . .
~Q~38~b Figs. 3, 4 and 5 Various configurations of sound outlet channel and compensating channel;
Fig. 6 A sectional view along the section line in Fig. 1;
Fig. 7 A further sectional view along the section line in Fig.
l;
Figs. 8~ and 8B
A unit in which the invention is realized;
Fig. 9 A partial section of the sound outlet of the hearing aid and Fig. 10 A view of the sound outlet channel and compensating channel from below. ~ -Fig. 1 shows a purely schematic sectional view of an in-the-ear hearing aid 1 in accordance with the invention with a compensating channel 2 and a cover plate 3 on which various components are mounted (not shown). The sound outlet channel 4 is located at the bottom end of the hearing aid.
Whereas previously sound outlet channels and compensating channels have been realized separately, it is now suggested in accordance with the invention to combine these two channels at the outlet.
This is shown particularly clearly by Fig. 2, where the sound outlet channel 4 is enclosed at least partially by an initial section of the compensating channel 2A. In addition, it is possible to schematically recognize the -: . ' . : - : .
.: . . ~ . -- .' - ~
-. . : .: : - -- - -.. . .
.' ' . - ' . . . ~ :: .
.
20~3~
earphone 5, around which at least one but preferably two sections of the compensating channel 2B are routed.
Figures 3, 4 and 5 show various configurations of the sound outlet channel 4A and various inlets 2A for the compensating channel.
In Fig. 3, the sound outlet channel 4A is located in the center and the compensating channel 2A possesses four inlets located around the sound outlet channel, for example.
In Fig. 4, the sound outlet channel 4A is arranged asymmetrically and is not completely surrounded by 3 inlets of the compensating channel 2A, for example.
In Fig. 5, the compensating channel 2A and sound outlet channel 4A are located next to each other and possess an approximately semi-circular cross-section.
As a result of these configurations, the sound outlet channel and compensating channel are clearly fixed with respect to the ear mold.
If we consider a section along the section line for Figures 6 and 7 in Fig. 1, we can see that the compensating channel (above the earphone) can be produced on the one hand by a continuous recess in the inner housing, designated here by 2C. Equally, however, the compensating channel 2D can be molded in the otoplastic mold. In this case, however, the bottom section 2A of the compensating channel is located below the earphone in the way shown in Figs. 1 and 2.
A particularly elegant solution for a combination of sound outlet channel and compensating channel is shown by unit 6 in Figs. 8A and 8B. This unit contains the earphone 5 and it is possible to see on the right side of , . ...................... ... . . .
. .
.
~ 2063~
the figure the sound outlet channel 4 and the compensating channel 2A, which continues inside the unit 6 as compensating channel 2B. This is in principle also intimated in Fig. 2.
Fig. 8B shows a sectional view along the section line in Fig. 8A. The earphone 5 is surrounded and held by the unit 6, preferably in the form shown. A compensating channel section 2B is molded in this unit. This section is shown with a rectangular cross-section, but may also possess an approximately semi-circular cross-section.
The bottom end of the in-the-ear hearing aid is shown in the sectional view in Fig. 9. It is again possi~le to see the sound outlet channel 4 and the compensating channel 2. A cerumen trap 8 is inserted in the bottom end of the hearing aid which can be closed off by a cap 9.
Fig. 10 shows the bottom end of the hearing aid from below, without the cover cap. It is again possible to see the sound outlet channel 4A, the compensating channel 2A
and the cerumen trap 8.
This new arrangement of the compensating channel in conjunction with the sound outlet channel eliminates the need for additional production steps in order to produce holes or channels for the compensating channel.
on the one hand, it is possible to produce one part of the compensating channel in a very simple way with the unit in accordance with Figs. 8A and 8B and the arrangement in accordance with Fig. 9i on the other hand, the remaining part of the compensating channel in - ~ . . .. - ~ . .
. ', ~ ' ' ' ' . " '' ' ' ': ''"' ''`- ' ' : :
- . . - .
'~ ~ ~ - ' . '" ' - ' -6 2~3~6 accordance with Fig. 6 or Fig. 7 can be produced very simply, either in the otoplastic mold or in the actual device housing itself.
This considerably simplifies the whole production procedure for a compensating channel.
. .
:: -.
Claims (5)
1. In-the-ear hearing aid for persons with impaired or defective hearing with an ear mold containing a microphone, amplifier, earphone, battery compartment with batteries and a compensating channel leading from inside to outside and covered by a cover plate, characterized in that the compensating channel (2, 2A) partially or completely encloses at least part of the sound outlet channel (4) from the earphone (5).
2. Hearing aid in accordance with Claim 1, characterized in that the compensating channel adjoining the part (2A) at least partially enclosing the sound outlet channel (4) continues past the earphone (5) in the direction of the cover plate (3) in a section (2B) which is at least partially an integral part of a unit (6) which contains the earphone (5) and simultaneously forms the transition between the two parts (2A, 2B) of the compensating channel.
3. Hearing aid in accordance with Claim 1 with a housing (7) containing the hearing aid components which is inserted in the ear mold, characterized in that the continuation of the compensating channel (2A, 2B) to the cover plate (3) is formed by a groove (2C) in the outer surface of the internal housing (7).
4. Hearing aid in accordance with Claim 1 with a housing (7) containing the hearing aid components which is inserted in the ear mold, characterized in that the continuation of the compensating channel (2A, 2B) is formed by a groove (2D) in the inner surface of the ear mold.
5. Hearing aid in accordance with Claims 1 to 4, characterized in that the common outlet for the sound and the compensating channel at the inner end of the ear mold is formed by a double-walled outlet part (8) which is covered by a detachable cerumen trap cap (9).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3927797A DE3927797A1 (en) | 1989-08-23 | 1989-08-23 | IN-EAR HEARING DEVICE WITH SOUND COMPENSATION CHANNEL |
| DEP3927797.6 | 1989-08-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2063806A1 true CA2063806A1 (en) | 1991-02-24 |
Family
ID=6387678
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002063806A Abandoned CA2063806A1 (en) | 1989-08-23 | 1990-07-06 | In-the-ear hearing aid with sound compensating channel |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP0489023B1 (en) |
| JP (1) | JPH05504238A (en) |
| AT (1) | ATE92703T1 (en) |
| CA (1) | CA2063806A1 (en) |
| DE (2) | DE3927797A1 (en) |
| DK (1) | DK0489023T3 (en) |
| WO (1) | WO1991003139A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483800A (en) * | 2007-12-27 | 2009-07-15 | 奥迪康有限公司 | Hearing device comprising a mould and an output module |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5195139A (en) * | 1991-05-15 | 1993-03-16 | Ensoniq Corporation | Hearing aid |
| DK42297A (en) * | 1997-04-15 | 1998-10-16 | Toepholm & Westermann | Waiting system for in-ear hearing aid |
| CA2388321A1 (en) | 1999-11-08 | 1999-12-29 | Phonak Ag | Hearing device |
| DE10020358C2 (en) * | 2000-04-26 | 2002-03-21 | Wunderlich Susanne | Shell for an in-the-ear hearing aid and method for producing a shell |
| DE10154390A1 (en) * | 2001-05-08 | 2002-12-05 | Vossieck Gmbh Dr | Hearing aid with venting |
| DE10213059C1 (en) * | 2002-03-22 | 2003-12-24 | Hoergeraete Kind Gmbh & Co Kg | Hearing aid with venting device |
| US7424122B2 (en) | 2003-04-03 | 2008-09-09 | Sound Design Technologies, Ltd. | Hearing instrument vent |
| DE102006008044B3 (en) * | 2006-02-21 | 2007-05-10 | Siemens Audiologische Technik Gmbh | In-the-ear hearing aid, has ventilation channel with openings in first- and second-housing zones |
| US20140224283A1 (en) * | 2013-02-08 | 2014-08-14 | Clearaid, Inc. | Protecting and purging hearing aid devices |
| DE102022207352A1 (en) * | 2022-07-19 | 2024-01-25 | Sivantos Pte. Ltd. | hearing aid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4375016A (en) * | 1980-04-28 | 1983-02-22 | Qualitone Hearing Aids Inc. | Vented ear tip for hearing aid and adapter coupler therefore |
| FR2596644A1 (en) * | 1986-04-08 | 1987-10-09 | Philips Massiot Mat Medic | Auditory prosthesis apparatus which can be housed in an auditory meatus |
-
1989
- 1989-08-23 DE DE3927797A patent/DE3927797A1/en not_active Withdrawn
-
1990
- 1990-07-06 CA CA002063806A patent/CA2063806A1/en not_active Abandoned
- 1990-07-06 DE DE9090910117T patent/DE59002220D1/en not_active Expired - Fee Related
- 1990-07-06 EP EP90910117A patent/EP0489023B1/en not_active Expired - Lifetime
- 1990-07-06 AT AT90910117T patent/ATE92703T1/en not_active IP Right Cessation
- 1990-07-06 JP JP2509274A patent/JPH05504238A/en active Pending
- 1990-07-06 WO PCT/EP1990/001091 patent/WO1991003139A1/en active IP Right Grant
- 1990-07-06 DK DK90910117.2T patent/DK0489023T3/en active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101483800A (en) * | 2007-12-27 | 2009-07-15 | 奥迪康有限公司 | Hearing device comprising a mould and an output module |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3927797A1 (en) | 1991-02-28 |
| ATE92703T1 (en) | 1993-08-15 |
| WO1991003139A1 (en) | 1991-03-07 |
| JPH05504238A (en) | 1993-07-01 |
| EP0489023B1 (en) | 1993-08-04 |
| DK0489023T3 (en) | 1993-11-29 |
| DE59002220D1 (en) | 1993-09-09 |
| EP0489023A1 (en) | 1992-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6731770B1 (en) | Behind-the-ear hearing aid and surface-mounted module for this type of hearing aid | |
| US6754357B2 (en) | Expandable in-ear device | |
| US4706778A (en) | In-the-ear-canal hearing aid | |
| US4407389A (en) | Vented acoustic ear mold for hearing aids | |
| EP0825796B1 (en) | Earphone | |
| EP0980641B1 (en) | In-the-ear hearing and with reduced occlusion effect and method for the production and user-fitting of such a hearing aid | |
| US4532649A (en) | Hearing aid | |
| US4442917A (en) | Vented acoustic ear mold for hearing aids | |
| US6735319B1 (en) | Behind-the-ear hearing aid | |
| CA2063806A1 (en) | In-the-ear hearing aid with sound compensating channel | |
| CA2264673A1 (en) | A compact modular in-the-ear hearing aid | |
| EP2076064B1 (en) | Hearing device comprising a mould and an output module | |
| WO2000021333A2 (en) | A hearing aid | |
| JPH01137691U (en) | ||
| JPS6014600U (en) | hearing aid | |
| JP2900125B2 (en) | Earplugs and hearing aids using them | |
| US7076074B2 (en) | Bearing of an electroacoustic miniature transducer in a device, particularly a hearing aid device, as well as an electroacoustic miniature transducer | |
| EP1483938B1 (en) | Microphone and battery configuration for hearing instruments | |
| US20080075310A1 (en) | Hearing aid device | |
| CN109951769A (en) | Stereo set with multiple oscillating plates | |
| EP1252797A1 (en) | In the ear hearing aid | |
| USD424568S (en) | Pair of housings for bone vibrating audio transducer for a communications headset | |
| JPH05111100A (en) | Module-type hearing aid system | |
| USD425511S (en) | Pair of housings for bone vibrating audio transducer for a communications headset | |
| JPS6244637Y2 (en) |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |