WO2003061341A2 - Hearing aid - Google Patents

Hearing aid Download PDF

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Publication number
WO2003061341A2
WO2003061341A2 PCT/NL2003/000023 NL0300023W WO03061341A2 WO 2003061341 A2 WO2003061341 A2 WO 2003061341A2 NL 0300023 W NL0300023 W NL 0300023W WO 03061341 A2 WO03061341 A2 WO 03061341A2
Authority
WO
WIPO (PCT)
Prior art keywords
hearing aid
housing
face
auditory canal
ear
Prior art date
Application number
PCT/NL2003/000023
Other languages
French (fr)
Other versions
WO2003061341A3 (en
Inventor
Lourens George Bordewijk
Original Assignee
Lourens George Bordewijk
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 Lourens George Bordewijk filed Critical Lourens George Bordewijk
Priority to JP2003561294A priority Critical patent/JP2005515736A/en
Priority to BR0306812-9A priority patent/BR0306812A/en
Priority to KR10-2004-7010941A priority patent/KR20040094406A/en
Priority to US10/500,836 priority patent/US7635047B2/en
Priority to AU2003235610A priority patent/AU2003235610A1/en
Priority to CA002473230A priority patent/CA2473230A1/en
Priority to EP03729563A priority patent/EP1468588A2/en
Publication of WO2003061341A2 publication Critical patent/WO2003061341A2/en
Publication of WO2003061341A3 publication Critical patent/WO2003061341A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • 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
    • H04R25/02—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception adapted to be supported entirely by ear
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a hearing aid to be placed in the auditory canal, comprising a housing provided with a microphone, an amplifier, a loudspeaker and a battery compartment, said housing being provided on one side with means for removing said hearing aid from the ear, and is provided on the other side with sound transmission means for the transmission of sound from said loudspeaker into the auditory organ.
  • Such a CIC (completely in channel) hearing aid is known from PCT Application WO 99/13686 in the name of L.G. Bordewijk. Such a device must be distinguished from more conventional hearing aids, which are fitted in or near the pinna of the person concerned.
  • Fitting the device at a deeper level in the auditory canal has not only optical advantages, but also acoustic advantages.
  • PCT Application WO 01/41503 also discloses a hearing aid for fitting in the auditory canal, which hearing aid is composed of two parts, the first part being a standard part provided with a relatively rigid plastic standard housing, in which microphone, amplifier, loudspeaker and battery compartments are accommodated.
  • the second part made of a more flexible plastic material, is adapted to the specific auditory canal of the individual patient.
  • the hearing aid according to the invention can comprise any type of hearing aid for placing in the auditory canal of a patient. All that is important is that the hearing aid be of a slightly curved design, in order to adapt better to the auditory canal of a patient.
  • the head end face facing outwards is designed in such a way that cosmetically it makes no difference that the standard part in the one ear is in fact rotated 180 degrees relative to the other ear.
  • the operating elements and their position on said end face are disposed in such a symmetrical arrangement that the 180-degree rotation makes no cosmetic difference to the end result.
  • the microphone input is made in the center, so that the rotation makes no difference whatsoever even to it, and therefore makes no acoustic difference between the one ear and the other.
  • the two other apertures on the end face contain operating elements which do differ, but because of the 180-degree rotation this difference is not noticeable, owing to the fact that these are apertures of exactly the same size that are placed exactly symmetrically.
  • the hearing aid on the right will have the same cosmetic profile as the hearing aid on the left.
  • the fit on the left and on the right, and therefore the positioning in the auditory canal and the appearance of the hearing aid is the same on both sides of the head, while technically the same hearing aid standard part is still being used on the left and on the right.
  • the hearing aid is composed of a standard part made of a relatively rigid plastic material and a second part that is adapted to the auditory canal of the patient.
  • the rigid plastic part which provides good protection for the electronic components, according to the present invention is universal, in other words designed for use either on the right or on the left.
  • the more flexible plastic part that is designed to fit the auditory canal of the patient is, of course, dependent upon the auditory canal concerned.
  • Such constructions must be distinguished from constructions in the case of which a part of the hearing aid is fitted outside the auditory canal.
  • a hearing aid is composed of a part that is placed in the ear and is custom-made for the patient concerned, and of a module to be placed on it that is universal. This module can be used either on the left or on the right.
  • the first central axis provided through said one side and the second central axis provided through said second side form an angle ⁇ of at least 10°.
  • a type by means of which the majority of patients can be helped is one in which the angle between the one side and the other side is approximately 45°.
  • Another type that can be used by certain users is that in which said angle is approximately 15°.
  • the abovementioned angle lies between 10 and 45°.
  • the hearing aid can be composed of two parts, in other words a universally usable housing and an end piece that is fitted on the other side, in which end piece in particular the sound channel is situated, and which can be adapted to the individual.
  • the head end face of the one side is provided with an ON/OFF switch of the hearing aid.
  • said head end face is preferably provided with some kind of adjusting means or means that make adjustment possible.
  • These adjusting means can comprise a potentiometer and/or a connection with any software that may be present in the hearing aid.
  • the cross section of the hearing aid is preferably oval, and more particularly is elliptical (symmetrically oval).
  • one part is provided with means for the removal of the hearing aid, which means are preferably manufactured by injection molding.
  • the other side can likewise be provided with such means, which serve as an aid if the hearing aid becomes detached in the auditory canal, or if the first means for the removal should unexpectedly fail.
  • Fig. 1 shows diagrammatically in perspective a first embodiment of the hearing aid according to the invention.
  • Fig. 2 shows an end view of the hearing aid according to Fig. 1.
  • a hearing aid is indicated in its entirety by 1 in Fig. 1.
  • This hearing aid is composed of an internal part 2 and an external part 6, which can also be indicated as a housing.
  • the internal part is composed of a connecting part for connection to the housing 6 and a part 4 adapted to the specific geometry of the auditory canal of the patient concerned. Sound channel 10 is fitted in part 4.
  • the external part 6 is preferably composed of a rigid plastic housing, in which electronic components are accommodated. According to the present invention, this part is a standard part that can be used for either the left or the right ear.
  • the internal part is designed depending on the present auditory canal of the patient.
  • a space for battery 5 is bounded between the internal part 2 and the housing 6.
  • Battery 5 is accommodated in a compartment of the housing 6 not shown in any further detail.
  • a microphone, an amplifier (digital or otherwise) and a loudspeaker, which are not illustrated, are also present in housing 6. Connection to the environment is achieved by way of the sound aperture 11. As can be seen from Fig. 2, said aperture is provided in the end face of the housing.
  • the head end face is indicated by 14.
  • Aperture 11 is positioned centrally, in other words whatever the position of the housing 6 is, aperture 11 will always have the same position relative to the pinna of the patient concerned.
  • Reference numeral 7 indicates a pull rod, which is connected to the housing and is made by injection molding. This pull rod is preferably transparent and serves to remove the hearing aid from and/or position it in the auditory canal.
  • the central axis of the internal part 2, described above by other side, is indicated by 8. This central axis is preferably in a position perpendicular to the end face of the internal part.
  • the longitudinal axis of the housing, indicated above by one part, is indicated by 9. This longitudinal axis is preferably in a position perpendicular to the head end face of the external part of the housing.
  • the angle between said axes is indicated by and according to the invention is preferably greater than 10°, and lies more particularly either at approximately 15°, or preferably approximately 45°.
  • a switch 12 is also present in the end face 14, for switching on/switching off the hearing aid.
  • An adjusting facility 13 is also present. In the present case this is a connector for connection to a computer or the like for setting the sound characteristics and the sound level of the amplifier fitted in the housing 6.
  • the outer boundary is symmetrically oval, and more particularly is elliptical.
  • the construction according to the invention is mirror symmetrical in end view, in other words the same view is achieved on rotation through 180°.
  • the same preferably applies to the remaining part of housing 6.
  • This housing 6 is a universal housing and is dimensioned in such a way that it can be placed in two positions, in other words on the left and on the right, in the smallest auditory canal existing.
  • Part 3 is adapted specifically to the patient concerned and to the auditory canal concerned (left or right). In other words, part 6 will generally be smaller than the available space in the auditory canal, with the result that it is possible to insert the hearing aid according to the invention at a deeper level in the auditory canal than is the case with existing hearing aids.

Landscapes

  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Neurosurgery (AREA)
  • Otolaryngology (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Manufacturing & Machinery (AREA)
  • Headphones And Earphones (AREA)
  • External Artificial Organs (AREA)
  • Stereophonic Arrangements (AREA)

Abstract

A hearing aid to be placed in the auditory canal. This hearing aid is composed of one side that is fitted near the outside of the ear and another side that has to be fitted facing the eardrum. The two sides are connected to each other by way of a curvature. This curvature is such that the hearing aid can be used either on the left or on the right by further special measures such as central positioning of the microphone input in the head end face of the one side, making use of only two angles of curvature of approximately 15° and approximately 45°, and using switching means. In this way it is possible to provide a hearing aid that can be used either on the left or on the right.

Description

HEARING AID
The present invention relates to a hearing aid to be placed in the auditory canal, comprising a housing provided with a microphone, an amplifier, a loudspeaker and a battery compartment, said housing being provided on one side with means for removing said hearing aid from the ear, and is provided on the other side with sound transmission means for the transmission of sound from said loudspeaker into the auditory organ.
Such a CIC (completely in channel) hearing aid is known from PCT Application WO 99/13686 in the name of L.G. Bordewijk. Such a device must be distinguished from more conventional hearing aids, which are fitted in or near the pinna of the person concerned.
Fitting the device at a deeper level in the auditory canal has not only optical advantages, but also acoustic advantages.
PCT Application WO 01/41503 also discloses a hearing aid for fitting in the auditory canal, which hearing aid is composed of two parts, the first part being a standard part provided with a relatively rigid plastic standard housing, in which microphone, amplifier, loudspeaker and battery compartments are accommodated. The second part, made of a more flexible plastic material, is adapted to the specific auditory canal of the individual patient.
Until now different hearing aids have been used for the left and right ear, and it was found that neither of these hearing aids was a totally satisfactory fit.
It is the object of the present invention to avoid these disadvantages and provide a hearing aid that can be used on either side.
This object is achieved in the case of a hearing aid of the type described above by the fact that the head end face of said one side is provided in the center with the input of said microphone.
The hearing aid according to the invention can comprise any type of hearing aid for placing in the auditory canal of a patient. All that is important is that the hearing aid be of a slightly curved design, in order to adapt better to the auditory canal of a patient. According to an advantageous embodiment, the head end face facing outwards is designed in such a way that cosmetically it makes no difference that the standard part in the one ear is in fact rotated 180 degrees relative to the other ear. The operating elements and their position on said end face are disposed in such a symmetrical arrangement that the 180-degree rotation makes no cosmetic difference to the end result. The microphone input is made in the center, so that the rotation makes no difference whatsoever even to it, and therefore makes no acoustic difference between the one ear and the other. The two other apertures on the end face contain operating elements which do differ, but because of the 180-degree rotation this difference is not noticeable, owing to the fact that these are apertures of exactly the same size that are placed exactly symmetrically.
On the face of it, viewed from the outside, and as a result of the symmetrical arrangement of the end face, the hearing aid on the right will have the same cosmetic profile as the hearing aid on the left. As a result of this design, the fit on the left and on the right, and therefore the positioning in the auditory canal and the appearance of the hearing aid, is the same on both sides of the head, while technically the same hearing aid standard part is still being used on the left and on the right.
According to an advantageous embodiment of the present invention, the hearing aid is composed of a standard part made of a relatively rigid plastic material and a second part that is adapted to the auditory canal of the patient. The rigid plastic part, which provides good protection for the electronic components, according to the present invention is universal, in other words designed for use either on the right or on the left. The more flexible plastic part that is designed to fit the auditory canal of the patient is, of course, dependent upon the auditory canal concerned.
Such constructions must be distinguished from constructions in the case of which a part of the hearing aid is fitted outside the auditory canal. Such a hearing aid is composed of a part that is placed in the ear and is custom-made for the patient concerned, and of a module to be placed on it that is universal. This module can be used either on the left or on the right.
According to an advantageous embodiment, the first central axis provided through said one side and the second central axis provided through said second side form an angle αof at least 10°.
Surprisingly, it has been found that in general two types of hearing aid will suffice. A type by means of which the majority of patients can be helped is one in which the angle between the one side and the other side is approximately 45°. Another type that can be used by certain users is that in which said angle is approximately 15°.
In general, the abovementioned angle lies between 10 and 45°. Surprisingly, it has been found that the hearing aid designed in a reliable way can be used on either the left or the right ear. In other words, a number of components of a hearing aid can be used universally, which considerably reduces the cost.
The hearing aid can be composed of two parts, in other words a universally usable housing and an end piece that is fitted on the other side, in which end piece in particular the sound channel is situated, and which can be adapted to the individual.
According to a further advantageous embodiment, the head end face of the one side, in other words the head end face facing outwards, is provided with an ON/OFF switch of the hearing aid. Furthermore, said head end face is preferably provided with some kind of adjusting means or means that make adjustment possible. These adjusting means can comprise a potentiometer and/or a connection with any software that may be present in the hearing aid.
According to a further advantageous embodiment, the cross section of the hearing aid is preferably oval, and more particularly is elliptical (symmetrically oval).
Furthermore, one part is provided with means for the removal of the hearing aid, which means are preferably manufactured by injection molding. The other side can likewise be provided with such means, which serve as an aid if the hearing aid becomes detached in the auditory canal, or if the first means for the removal should unexpectedly fail.
The invention will be illustrated below with reference to preferred embodiments. In the drawing:
Fig. 1 shows diagrammatically in perspective a first embodiment of the hearing aid according to the invention; and
Fig. 2 shows an end view of the hearing aid according to Fig. 1.
A hearing aid is indicated in its entirety by 1 in Fig. 1. This hearing aid is composed of an internal part 2 and an external part 6, which can also be indicated as a housing. The internal part is composed of a connecting part for connection to the housing 6 and a part 4 adapted to the specific geometry of the auditory canal of the patient concerned. Sound channel 10 is fitted in part 4.
The external part 6 is preferably composed of a rigid plastic housing, in which electronic components are accommodated. According to the present invention, this part is a standard part that can be used for either the left or the right ear. The internal part is designed depending on the present auditory canal of the patient. A space for battery 5 is bounded between the internal part 2 and the housing 6. Battery 5 is accommodated in a compartment of the housing 6 not shown in any further detail. A microphone, an amplifier (digital or otherwise) and a loudspeaker, which are not illustrated, are also present in housing 6. Connection to the environment is achieved by way of the sound aperture 11. As can be seen from Fig. 2, said aperture is provided in the end face of the housing. The head end face is indicated by 14. Aperture 11 is positioned centrally, in other words whatever the position of the housing 6 is, aperture 11 will always have the same position relative to the pinna of the patient concerned. Reference numeral 7 indicates a pull rod, which is connected to the housing and is made by injection molding. This pull rod is preferably transparent and serves to remove the hearing aid from and/or position it in the auditory canal.
The central axis of the internal part 2, described above by other side, is indicated by 8. This central axis is preferably in a position perpendicular to the end face of the internal part. The longitudinal axis of the housing, indicated above by one part, is indicated by 9. This longitudinal axis is preferably in a position perpendicular to the head end face of the external part of the housing. The angle between said axes is indicated by and according to the invention is preferably greater than 10°, and lies more particularly either at approximately 15°, or preferably approximately 45°.
It can be seen from Fig. 2 that a switch 12 is also present in the end face 14, for switching on/switching off the hearing aid. An adjusting facility 13 is also present. In the present case this is a connector for connection to a computer or the like for setting the sound characteristics and the sound level of the amplifier fitted in the housing 6. It can be seen from Fig. 2 that the outer boundary is symmetrically oval, and more particularly is elliptical.
As shown in Fig. 2, the construction according to the invention is mirror symmetrical in end view, in other words the same view is achieved on rotation through 180°. The same preferably applies to the remaining part of housing 6. This housing 6 is a universal housing and is dimensioned in such a way that it can be placed in two positions, in other words on the left and on the right, in the smallest auditory canal existing. Part 3 is adapted specifically to the patient concerned and to the auditory canal concerned (left or right). In other words, part 6 will generally be smaller than the available space in the auditory canal, with the result that it is possible to insert the hearing aid according to the invention at a deeper level in the auditory canal than is the case with existing hearing aids. This is because the curved shape of the auditory canal does not constitute any obstruction, owing to the fact that part 6 is made smaller than this canal. In order to make it all function properly, it is, of course, important for the end face to be in a position perpendicular to axis 9. Only in those circumstances can full symmetry be ensured.
Variants that lie within the scope of the appended claims will spring to mind in the case of the person skilled in the art after reading the above.

Claims

Claims
1. Hearing aid (1) to be placed in the auditory canal, comprising a housing (6) provided with a microphone, an amplifier, a loudspeaker and a battery compartment, said housing being provided on one side with means (7) for removing said hearing aid from the ear, and is provided on the other side with sound transmission means (10) for the transmission of sound from said loudspeaker into the auditory organ, characterized in that the end face (14, 34) of said one side is provided in the center with the input (11) of said microphone.
2. Hearing aid as claimed in claim 1, wherein said housing comprises a universal standard housing and said sound transmission means (10) comprises a part that is adapted to the auditory canal of the patient.
3. Hearing aid as claimed in one of the preceding claims, wherein the first central axis (7) provided through said one side and the second central axis (8) provided through said second side form an angle of at least 10°.
4. Hearing aid as claimed in claim 1, wherein said angle is at least 15°.
5. The hearing aid as claimed in one of the preceding claims, wherein said angle is approximately 45°.
6. Hearing aid as claimed in one of the preceding claims, wherein the head end face is provided with switching means (12) on said one side.
7. Hearing aid as claimed in one of the preceding claims, wherein the head end face is provided with connector means on said one side.
8. Hearing aid as claimed in one of the preceding claims, wherein said means for removing it from the ear comprise an injection molded part connected to the housing.
9. Hearing aid as claimed in one of the preceding claims, wherein the cross section of said housing is oval.
10. Hearing aid as claimed in claim 9, wherein the cross section of said housing is symmetrically oval.
11. Hearing aid as claimed in one of the preceding claims, wherein said other side is provided with means (7) for removing it from the ear.
PCT/NL2003/000023 2002-01-15 2003-01-15 Hearing aid WO2003061341A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2003561294A JP2005515736A (en) 2002-01-15 2003-01-15 hearing aid
BR0306812-9A BR0306812A (en) 2002-01-15 2003-01-15 Hearing correction device
KR10-2004-7010941A KR20040094406A (en) 2002-01-15 2003-01-15 Hearing aid
US10/500,836 US7635047B2 (en) 2002-01-15 2003-01-15 Hearing aid
AU2003235610A AU2003235610A1 (en) 2002-01-15 2003-01-15 Hearing aid
CA002473230A CA2473230A1 (en) 2002-01-15 2003-01-15 Hearing aid
EP03729563A EP1468588A2 (en) 2002-01-15 2003-01-15 Hearing aid

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1019747 2002-01-15
NL1019747A NL1019747C2 (en) 2002-01-15 2002-01-15 Hearing aid.

Publications (2)

Publication Number Publication Date
WO2003061341A2 true WO2003061341A2 (en) 2003-07-24
WO2003061341A3 WO2003061341A3 (en) 2003-12-18

Family

ID=19774457

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2003/000023 WO2003061341A2 (en) 2002-01-15 2003-01-15 Hearing aid

Country Status (10)

Country Link
US (1) US7635047B2 (en)
EP (1) EP1468588A2 (en)
JP (1) JP2005515736A (en)
KR (1) KR20040094406A (en)
CN (1) CN100542336C (en)
AU (1) AU2003235610A1 (en)
BR (1) BR0306812A (en)
CA (1) CA2473230A1 (en)
NL (1) NL1019747C2 (en)
WO (1) WO2003061341A2 (en)

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US8811642B2 (en) 2009-04-08 2014-08-19 Daniel R. Schumaier Hearing assistance apparatus having single multipurpose control device and method of operation

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CN101711485B (en) * 2007-04-25 2013-06-12 丹尼尔·R·舒梅尔 User programmable hearing assistance device
WO2009063096A2 (en) * 2009-02-13 2009-05-22 Phonak Ag Multipart compartment for a hearing device
US8820474B2 (en) * 2011-08-25 2014-09-02 Magnatone Hearing Aid Corporation Ear tip piece for hearing instruments

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WO1999013686A1 (en) * 1997-09-08 1999-03-18 Lourens George Bordewijk Hearing aid, ear piece, aid for its insertion into the ear and device for making a cast of the deepest part of the auditory passage
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8811642B2 (en) 2009-04-08 2014-08-19 Daniel R. Schumaier Hearing assistance apparatus having single multipurpose control device and method of operation
US9031272B2 (en) 2009-04-08 2015-05-12 Daniel R. Schumaier Hearing assistance apparatus having single multipurpose control device and method of operation

Also Published As

Publication number Publication date
BR0306812A (en) 2004-12-28
CA2473230A1 (en) 2003-07-24
US7635047B2 (en) 2009-12-22
EP1468588A2 (en) 2004-10-20
KR20040094406A (en) 2004-11-09
AU2003235610A8 (en) 2003-07-30
NL1019747C2 (en) 2003-07-17
AU2003235610A1 (en) 2003-07-30
CN100542336C (en) 2009-09-16
JP2005515736A (en) 2005-05-26
US20050082109A1 (en) 2005-04-21
WO2003061341A3 (en) 2003-12-18
CN1615669A (en) 2005-05-11

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