EP1522208A1 - Partly implanted hearing aid - Google Patents

Partly implanted hearing aid

Info

Publication number
EP1522208A1
EP1522208A1 EP03760752A EP03760752A EP1522208A1 EP 1522208 A1 EP1522208 A1 EP 1522208A1 EP 03760752 A EP03760752 A EP 03760752A EP 03760752 A EP03760752 A EP 03760752A EP 1522208 A1 EP1522208 A1 EP 1522208A1
Authority
EP
European Patent Office
Prior art keywords
patient
housing
hearing aid
magnetic
characterized
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
EP03760752A
Other languages
German (de)
French (fr)
Other versions
EP1522208B1 (en
Inventor
Guy Charvin
Stéphane GALLEGO
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.)
MXM SA
Original Assignee
MXM SA
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
Priority to FR0207738A priority Critical patent/FR2841429B1/en
Priority to FR0207738 priority
Application filed by MXM SA filed Critical MXM SA
Priority to PCT/FR2003/001889 priority patent/WO2004002193A1/en
Publication of EP1522208A1 publication Critical patent/EP1522208A1/en
Application granted granted Critical
Publication of EP1522208B1 publication Critical patent/EP1522208B1/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R25/00Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
    • H04R25/60Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
    • H04R25/604Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
    • H04R25/606Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers acting directly on the eardrum, the ossicles or the skull, e.g. mastoid, tooth, maxillary or mandibular bone, or mechanically stimulating the cochlea, e.g. at the oval window
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04RLOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2225/00Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
    • H04R2225/67Implantable hearing aids or parts thereof not covered by H04R25/606

Abstract

The invention concerns a hearing aid comprising: an outer housing (1) containing a signal processing module (11) connected in input to at least a microphone (13) and in output to an earphone for transmitting a sound signal into the patient's external auditory canal (5); at least one first magnetic component (12) arranged in the outer housing (1); at least one second magnetic component (21) arranged in an implantable housing designed to be implanted under the patient's skin, at a site where the outer housing (1) can be maintained, the first magnetic component being arranged in the outer housing such that a magnetic attraction force is exerted with the second magnetic component when the outer housing (1) is placed at said site; and a device for delivering sound signals into the patient's external auditory canal comprising the earphone and a connection (4) between the outer housing (1) and the auditory canal.

Description

HEARING AID DEVICE FOR REHABILITATION OF PATIENTS WITH PARTIAL sensorineural hearing loss.

The invention relates to an acoustic hearing aid for the rehabilitation of patients with partial deafness neurosensory.

At present, acoustic hearing aids available on the market are listed in two product categories: in-ear devices and in-ear devices.

The BTE devices comprise a circular arc-shaped housing intended to be located behind the ear, the housing generally comprising one or more sensors such as microphones, a type of energy source cell or battery, and electronic circuits for amplifying and analog signal processing and / or digital. The electronics generate an audio signal that is sent into the patient's ear canal through an acoustic tube held in the duct by a plug intra- atrial atrial.

This plug-ear also reduces acoustic feedback effects between the listener and the sound emission point.

Besides the fact that the BTE devices are standardized, these devices have ease of implementation, good reliability and adequate performance, partly due to the relatively large volume available, to integrate all the electronic circuits required. However, these devices have the disadvantage of being painful to wear, and risk falling as a result of certain head movements. In addition, they are relatively visible and lacking in aesthetics. They do not eliminate completely the feedback phenomena that the microphone is relatively close to the earpiece, which requires them to be adjusted in mode of sub-amplification. Moreover, the plug-ear also has drawbacks, especially unpleasant sensation of plugged ear, perception of extraneous sounds when chewing, and hygiene problems and potential infections, due to the fact that mouth the ear canal. As for the second category of devices available on the market, in-ear devices are in the form of small packages to be inserted directly into the ear canal. This housing is constituted by a resin shell, whose shape is adapted by molding to the anatomy of the external auditory meatus of each patient. Said housing together in a very small volume of the sound sensor, the electronic circuits for amplifying and processing the signal, the receiver, the power source (electric cell). Compared to the ear devices, they have the advantage of being significantly less visible and compact. In return, they generate significant feedback phenomena, both mechanical and acoustic, due to the proximity of the microphone and earpiece, which require them to be set in a mode of even smaller sub-amplification as the devices to-ear. The miniaturization of the microphone and earpiece does not provide the sound quality good. In addition, the small volume available makes it difficult or impossible to add additional microphones or more sophisticated signal processing functions. It has low autonomy due to the use of a necessarily small battery. Because of its small size, its handling, particularly when adjustments and battery changes is difficult, resulting in a fall hazard when removing the ear canal. As for BTE devices, they cause discomfort ear bite, pose hygiene problems, with the risk of infection and premature wear of the device.

The present invention aims to overcome these drawbacks. This object is achieved by providing an acoustic hearing aid device, generating at least one audible signal and intended to be fixed on the body of a patient, said device comprising an outer housing enclosing an electronic module signal processing its input connected to at least one microphone and as output to an earpiece designed to emit a sound signal in the external auditory canal of the patient 5, and a power source.

According to the invention, the device further comprises:

- at least a first magnetic member disposed within the outer housing,

- at least one second magnetic piece placed in an implantable casing designed to be implanted under the patient's skin at a location of the body where the external casing has to be maintained, the first magnetic piece being disposed in the outer housing to a force magnetic attraction is exerted with the second magnetic piece when the external casing is placed at said location, and - a sound signal distribution device in the patient's auditory canal including the earpiece, and a connection between the outer housing and the patient's auditory canal, having a length such that the microphone can be kept sufficiently away from the auditory canal to avoid Larsen phenomena.

Advantageously, the first magnetic piece is a magnet.

Preferably, the second magnetic piece is a magnet.

According to one feature of the invention, the first and second magnetic pieces are permanent magnets and the second magnetic part is arranged in the housing located so as to have a north-south magnetic axis approximately parallel to the surface of the patient's skin to said location, and the first magnetic part is arranged in the outer casing so as to have a north-south magnetic axis approximately parallel to the housing wall intended to come into contact with the patient's skin.

According to a first preferred variant of the invention, the second magnetic piece is a magnet and the first magnetic piece comprises two permanent magnets arranged in the outer casing so as to have north-south magnetic axes substantially perpendicular to the wall of the housing for contacting the patient's skin, and in opposite directions, these magnetic axes being spaced from each other by a distance substantially corresponding to the distance between the poles of the second magnetic piece.

According to a second preferred embodiment of the invention, the first magnetic piece is a magnet and the second magnetic piece comprises two permanent magnets arranged in the housing located so as to have north-south magnetic axes substantially perpendicular to surface of the patient's skin to said location, and in opposite directions, these magnetic axes being spaced from each other by a distance substantially corresponding to the distance between the poles of the first magnetic piece.

According to a third preferred embodiment of the invention, the second magnetic piece comprises at least two permanent magnets arranged in the housing located so as to have north-south magnetic axes substantially perpendicular to surface of the patient's skin at said location, and alternatively in opposite directions, and the first magnetic piece comprises as many permanent magnets as the first piece, the magnets of the first magnetic piece being arranged in the housing so as to have north-south magnetic axes substantially perpendicular to the wall of the outer housing intended to come into contact with the patient's skin, and alternately in opposite directions, the magnetic axes of the magnets disposed in the external casing being distributed in a plane substantially parallel to said wall in a configuration substantially corresponding to the axes of the distribution pattern magnetic magnets in the implanted housing.

According to one feature of the invention, the second housing is adapted to be implanted in the temporo-occipital zone of the patient's skull.

According to another feature of the invention, the earpiece is disposed within the outer housing and connected to the duct patient's external ear with an acoustic tube having an atrial end, the hearing aid device further comprising a system of anti-feedback mechanical damping.

Alternatively, the receiver is placed in the patient's external auditory meatus and forms an intra-auricular end of the link, the link being constituted by an electric cable.

Advantageously, the intra-auricular end of the link is maintained in the patient's external auditory duct by means of an intra-auricular support comprising means for centering and holding said end in the auditory canal.

According to another feature of the invention, the outer housing includes a base and a cover rotatably mounted on the base, and means for locking the angular position of the cover relative to the base, the second magnetic piece being attached to the base, while that the microphone or microphones are fixed to the cover.

According to yet another feature of the invention, the implanted casing is connected to at least two hearing potential collecting electrodes evoked or spontaneous, the implanted casing containing at least one electronic module for the collection and signal processing connected to the pickup electrodes , a transmission module connected to an antenna and gathering and processing module, for transmitting to the outer case the signals produced by the code module based on signals collected by the electrodes, and a power supply.

Preferably, one of the pickup electrodes is adapted to be disposed on the round window.

According to another feature of the invention, the implanted casing is furthermore connected to at least one active stimulation electrode intended to be positioned close to the patient's inner ear or in the cochlea, the implanted casing containing at least one module electronic stimulation connected to stimulation electrodes, a transmission module connected to an antenna and to the stimulation module, the stimulation module being designed to generate electrical stimulation signals that are applied to the stimulation electrodes from signals received from the housing external one through the transmission module via the antenna located in the implanted casing.

Preferably, one of the active stimulation electrodes is designed to be placed on the round window of the middle ear of the patient.

Advantageously, the pickup electrodes and the stimulation electrodes are at least partially common.

According to yet another feature of the invention, the outer housing further comprises a signal transmission module connected to at least one antenna and the electronic module.

Advantageously, the implanted casing is furthermore connected to at least one electromechanical transducer vibrator intended to be positioned in a bony or cartilaginous zone close to the patient's inner ear, the implanted casing containing at least one electronic stimulation module connected to the vibrator , a transmission module connected to an antenna and to the stimulation module, the stimulation module being designed to generate electrical stimulation signals that are applied to the vibrator from signals received from the external housing 1 through the transmission module via the antenna located in the implanted casing. A preferred embodiment of the invention will be described by way of example, with reference to the accompanying drawings in which:

Figure 1 shows schematically in partial side view, the head of a patient equipped with a hearing aid according to the invention;

2 shows a sectional view of a portion of the patient's head shown in Figure 1, equipped with the hearing aid according to the invention;

2a shows in axial view an earphone holder intra-atrial, according to the invention;

Figure 3 shows in more detail the prosthesis shown in Figure 1 and of the prosthesis fixing device according to the invention;

Figures 4 to 6 show three variants of the device according to the invention shown in detail in Figure 3;

7 shows in section a further advantageous variant of the device according to the invention;

8 shows a top view of the device shown in Figure 7;

Figures 9 and 10 show two other variants of the implanted housing of the device according to the invention.

Figures 1 and 2 show respectively in side view and in section, the head of a patient with a hearing aid device according to the invention retained on the skull. This device comprises an external casing 1 provided with at least a microphone 13a, 13b and containing a power source (e.g. a battery or a battery), and electronic circuits for amplifying and signal processing, the housing being connected to a sound signal distribution device in the ear 5 of the patient conduit, the device comprising an earpiece 3 and a joint 4 between the housing and inside the ear canal. As shown in Figure 2 which shows in section the ear 6 and the ear canal of the patient 5, and part of the head 7, the casing 1 is maintained according to the invention on the patient's head by means of a magnet accommodated in a casing 2 implanted under the skin and optionally attached to the skull bone 7, this magnet being arranged to exert a magnetic attractive force on a magnetic piece arranged in the outer casing, when the latter is disposed 2 near the implanted housing.

The housing 2 has a substantially flat shape of small thickness, so that it can be inserted under the skin, preferably under the scalp so as to be hidden by the hair of the patient, even at an advanced stage of baldness. For this purpose, it is based for example on the mastoid or the temporo-occipital bone as shown in Figure 1.

By choosing a magnet whose strength is matched, the housing can be fixed easily on the patient's head and held in any position and during normal movements of the latter. Functionally, the one or more microphones on the housing 1 are sufficiently distant from the listener, and separated by the pinna which serves as a screen between the reverberant sound from the ear canal and the microphone. As a result, the acoustic feedback between the sound reverberated from the external ear canal or arriving at the microphones is attenuated or eliminated (depending on the amplification and the opening of the nozzle, popular) due to the combination of the two means consisting of a part of the sufficient distance between the ear canal and the one or more microphones located near the temporo-occipital zone and on the other hand the existence of a natural acoustic barrier formed by the ear pavilion.

Thanks to the integration progress of electronic circuits, the housing 1 may be thin so as not to appear allowance when it is hidden by the hair.

The link 4 between the housing 1 and the receiver 3 is constituted by an electrical cable. In this case, the earpiece comprises an electroacoustic transducer intended to be inserted into the patient's external auditory meatus. Alternatively, the link 4 is an acoustic tube. In this case, the receiver is integrated into the outer housing 1 and extended by the acoustic tube 4 which is sealed and which has a length adapted to reach the patient's external auditory canal bottom. In this case, the receiver contained in the housing is equipped with an anti-feedback mechanical damping device (damping vibrations generated by the receiver). Note that it does not appear to acoustic feedback phenomenon that the sound waves generated by the earpiece are channeled through the acoustic tube.

Preferably, the cable 4 is semi-rigid so as to accurately follow a predetermined path between the housing 1 and the bottom of the external auditory canal, for example bypassing the ear from above, and to maintain the receiver 3 to a certain position in the external auditory meatus. Thus, it is not necessary to seal the ear canal with a stopper to keep the listener up.

Alternatively, the link 4 may be flexible and the receiver 3 or the end of the acoustic tube is held and centered in the external auditory canal by an intra-auricular support 9. As shown in more detail in Figure 2a, the support intra-atrial 9 comprises a central housing for receiving the receiver 3 or the end of the acoustic tube, this central housing being connected to an outer tubular member 8c by spacers 8a, 8b defining with the outer tubular member vents allowing good ventilation of the ear canal.

8c The tubular member is preferably made of a compressible material and / or elastic, or is molded as a function of the anatomy of the patient's ear canal.

Relative to the housings of the prior art, the invention allows to maintain in the patient's head in a hearing aid device of a practically invisible manner, only the link 4 remaining visible, while being very discrete. In addition, the virtual absence of feedback makes it possible firstly to increase patient hearing performance through better amplification, and secondly, reduce health problems and occlusion phenomenon (sensation ear bite) resulting quasi-sealing of the earplug, which may advantageously be replaced by the ear support 9 open.

As shown in more detail in Figure 3, the housing 1 contains a magnet 12, for example a ferromagnetic material, which is disposed against a face of the casing so as to be positioned opposite and close to the casing 2 located during the establishment of the prosthesis on the patient's head. The housing 1 also includes electronic circuitry 11 powered by a thin battery (not shown), and a sensor 13 connected to the electronic circuits.

Of course, the ferromagnetic material part can be accommodated in the housing 2 located, and the magnet arranged in the housing 1.

In some cases, the sensor 13 must be positioned in a precise orientation with respect to the patient's head. Indeed, some hearing aid devices include a directional microphone or more omnidirectional microphones that must be oriented so as to return information about the direction from which the sound, the microphones must be precisely positioned so that the prosthesis can render accurate direction from the perceived sound.

4 shows a hearing aid housing containing two microphones 13a, 13b. So that the housing and thus the microphones are arranged in a specific orientation relative to the patient's head, the permanent magnet 21 is implanted under the skin so as to present a north-south axis (represented in the figure by the arrow 24) oriented in a certain direction parallel to the surface of the skull. Furthermore, the part 12 housed in the housing 1 is replaced by a magnet 12 ', for example a permanent magnet whose north-south axis 22 is oriented in a predetermined direction parallel to the face of the casing intended to s' applied against the patient's skin. In this way, the housing 1 can be held on the head of the patient in a certain orientation.

This result can also be achieved through the embodiment shown in Figure 5. In this figure, the permanent magnet 12 ', shown in Figure 4, is replaced by two magnets 12a, 12b whose North-South axes 22a, 22b are oriented perpendicular to the face of the casing intended to be applied against the patient's skin, and in opposite directions. In addition, the north-south axes 22a, 22b are spaced a distance corresponding to the distance between the north and south poles of the magnet 2 operates.

The housing 1 may also be maintained on the patient's head in a certain predetermined direction with the embodiment shown in Figure 6. In this embodiment, the implanted casing 2 comprises two magnets 21a, 21b whose north-south 24a, 24b are oriented perpendicular to the skull surface, and in opposite directions. The housing 1 then contains a single magnet 12 'as shown in Figure 4, or two magnets 12a, 12b as shown in Figure 5 or 6, these magnets being arranged in the housing so as to come opposite a magnet implanted 21a, respectively 21b, of the same orientation, when the housing 1 is placed in the desired orientation on the patient's head.

There may also be more than two magnets and located in the housing. These magnets are arranged so that their respective north-south axes perpendicular to the surface of the patient's skin at the location where the housing must be maintained. In addition, the various magnets must be retained in the housing or attached thereto in a pattern corresponding to that of the implanted magnets, the polarity of the latter.

According to a preferred variant of the invention shown in Figures 7 and 8, the outer housing 1, comprises a base of circular shape in which are housed one or two magnets 12a and 12b, and a lid lb also circular in shape, in which are fixed the microphones 13a, 13b, and possibly the electronic circuits, and the power source. The pedestal is held on the patient's skull always in the same orientation in accordance with one of the embodiments shown in Figures 4 to 6, depending on the respective polarities of the magnetic pieces 21, 21a, 21b, while the cover lb is pivotally mounted on the pedestal, and locked in an angular position relative to the latter by fastening means, for example consisting of a central screw 25 passing through the cover and screwed into a central pivot provided in the base la. In Figure 7, it can be seen that the magnets are completely electrically isolated in the base, so as to avoid electrical contact with the electronic circuits housed in the lid.

Figure 8 shows in broken three different positions of the cover relative to the base lines (4 rotates the cable while the magnets 12a, 12b are stationary).

The one or more microphones 13, 13a, 13b can thus be oriented in an optimum manner and with high precision by the practitioner responsible for the setting of the device or by the patient following implantation of the housing 2. In this manner , are overcome any inaccuracies of implanting the implanted housing 2, in particular resulting from differences in morphology of a patient to another.

The patient can have and remove housing 1 with ease, always with the assurance that the microphones will be oriented correctly.

Of course, there can be other cover mounting options on the housing (grooves, notches, pins, etc.), without departing from the scope of the invention.

Alternatively or in combination, the one or more microphones 13, 13a, 13b can also be arranged at the end of a respective rigid cable, connected to the outer housing 1. If the cable is conformable by the practitioner as a result of the installation of the implanted casing 2, and to dispose properly orient the one or more microphones relative to the patient's head, it is not necessary that the outer housing 1 has a the steerable part.

As shown in Figure 9, the implanted housing 2 advantageously comprises, in addition to the one or more magnetic pieces 21a, 21b, a system of collection of evoked or spontaneous auditory potentials. This system comprises at least two extra-cochlear electrode of collection 35, 36 connected to the housing. The system also includes a collection of electronic module 32 to amplify, and optionally processing signals from the electrodes 35, 36, a transfer unit 33 comprising including a transmitting antenna for transmitting outward for example by electromagnetic waves , via an amplitude modulation or frequency, the signals generated by the collection module 32, a power supply 31 comprising a battery and / or coils sensing the electromagnetic energy from an external coil for example provided in the housing 1. the outer casing 1 may also comprise a receiving module connected to a coil / antenna for receiving the signals transmitted by the transfer module 33. in this case, the outer coil and the antenna of the receiving module can be attached to the base or to the lid lb of the outer casing.

At least one of the pickup electrodes 35, 36 is intended to be implanted close to the patient's inner ear, preferably on the round window. In this case, the collection module is adapted for amplifying and processing acoustic evoked potentials and spontaneous. Alternatively, the pickup electrodes 35, 36 are implanted under the patient's skin, also in the temporo-occipital region of the skull to measure evoked potentials and the collection module 32 is adapted to amplify and optionally treating such potentials. For this purpose, the electrodes are for example arranged at the end of flexible tabs 34a, 34b attached to the housing 2. In this case, there is also provided a reference electrode R positioned on the housing 2 and connected to the collection module 32.

As shown in Figure 10, the housing 2 contains, alternately or in combination with the collection module 32, a pacing module 37 connected to at least one active stimulation electrode 38, 39, located near the inner ear of the patient, for example on the oval window or the round window of the middle ear, or in the cochlea. In the case of a monopolar stimulation, the stimulation module 37 is connected to at least one neutral stimulation electrode remote from the inner ear. The stimulation module is adapted to generate stimulation signals from signals received from the external housing 1 by means of the transfer module 33.

The electrodes 38, 39 may be replaced or combined with a vibrator electromechanical transducer, for example of piezoelectric type, implanted in a bony or cartilaginous zone, preferably near the patient's inner ear, for performing electro-stimulation.

In the embodiment wherein the implanted casing 2 comprises, in combination devices for collecting and stimulation, as described with reference to Figures 9 and 10, the electrodes for collecting and stimulation are, according to an advantageous variant, common and can operate alternately in collection mode and pacing mode. In this case, according to a preferred embodiment of the invention, one of the electrodes 38, 39 is positioned on the round window and is both an active stimulation electrode, and in turn, a potential collection electrode hearing.

Claims

1. An acoustic hearing aid generating at least one audible signal and intended to be fixed on the body of a patient, comprising an outer casing (1) renfeπnant an electronic module (11) connected to signal processing at the input to at least one microphone (13, 13a, 13b) and in output to an earpiece designed to emit a sound signal in the external auditory canal of the patient 5, and a power source, characterized in that it further comprises: - at least one first magnetic piece (12, 12 ', 12a, 12b) disposed in the outer housing (1),
- at least one second magnetic piece (21, 21a, 21b) arranged in a housing (2) implantable, intended to be implanted under the patient's skin at a location of the body where the external casing (1) is to be maintained, the first magnetic piece being disposed in the housing for a magnetic attractive force is exerted with the second magnetic piece when the external casing (1) is placed at said location, and
- a sound signal distribution device in the patient's auditory canal including the earpiece, and a link (4) between the outer casing (1) and the patient's auditory canal, having a length such that the microphone can be kept sufficiently away from the ear canal to avoid the phenomena of feedback.
2. An hearing aid according to claim 1, characterized in that the first magnetic piece (12 ') is a magnet.
3. An hearing aid according to claim 1 or 2, characterized in that the second magnetic part (21) is a magnet.
4. A hearing aid according to one of claims 1 to 3, characterized in that the first and second magnetic parts (12 ', 21) are permanent magnets, and in that the second magnetic part is arranged in the implanted housing (2) so as to have a north-south magnetic axis approximately parallel to the surface of the patient's skin at said location, and the first magnetic part is arranged in the outer casing (1) so as to have a magnetic axis north-south substantially parallel to the housing wall intended to come into contact with the patient's skin.
5. An hearing aid according to one of claims 1 to 3, characterized in that the second magnetic part (21) is a magnet and the first magnetic piece comprises two permanent magnets (12a, 12b) disposed in the outer housing (1) so as to have north-south magnetic axes approximately perpendicular to the housing wall intended to come into contact with the patient's skin, and in opposite directions, these magnetic axes being spaced from each other of a distance substantially corresponding to the distance between the poles of the second magnetic piece (21).
6. An hearing aid according to one of claims 1 to 3, characterized in that the first magnetic piece (12 ') is a magnet and the second magnetic piece comprises two permanent magnets (21a, 21b) arranged within the housing implanted (2) so as to have north-south magnetic axes substantially perpendicular to surface of the patient's skin at said location, and in opposite directions, these magnetic axes being spaced from each other by a distance substantially corresponding the distance between the poles of the first magnetic piece (12 ').
7. An hearing aid according to one of claims 1 to 3, characterized in that the second magnetic piece comprises at least two permanent magnets (21a, 21b) disposed in the implanted casing (2) so as to have axes north-south magnetic surface substantially perpendicular to the patient's skin at said location, and alternatively in opposite directions, and the first magnetic piece comprises as many permanent magnets (12a, 12b) that the first part, the first part of the magnets magnetic being disposed in the housing so as to have north-south magnetic axes substantially perpendicular to the wall of the outer housing (1) intended to come into contact with the patient's skin, and alternately in opposite directions, the magnetic axes of the magnets arranged in the outer housing (1) being distributed in a plane substantially parallel to said wall in a configuration corresponding substantially to the joint nfiguration distribution of the magnetic axes of the magnets (21a, 21b) in the implanted casing.
8. An hearing aid according to one of claims 1 to 7, characterized in that the second housing (2) is adapted to be implanted in the temporo-occipital zone of the patient's skull.
9. An hearing aid according to one of claims 1 to 8, characterized in that the earpiece is disposed within the outer housing (1) and connected to the external auditory canal (5) of the patient with an acoustic tube (4 ) having an intra-auricular end (3), the hearing aid device further comprising an anti-feedback mechanical damping system.
10. An hearing aid according to one of claims 1 to 8, characterized in that the receiver is placed in the external auditory canal (5) of the patient and forms an intra-auricular end (3) of the link ( 4), the connection (4) being constituted by an electric cable.
11. An hearing aid according to claim 9 or 10, characterized in that the intra-auricular end (3) of the link (4) is held in the external auditory canal (5) of the patient by means of a in-ear holder (9) having means (8a, 8b, 8c) for centering and holding said end (3) in the ear canal (5).
12. An hearing aid according to one of claims 1 to 11, characterized in that the outer housing (1) comprises a base (lb) and a cover (la) rotatably mounted on the base, and locking means (25) the angular position of the cover relative to the base, the second magnetic piece (21, 21a, 21b) being attached to the base, whereas the microphone or microphones (13, 13a, 13b) are secured to the cover.
13. An hearing aid according to one of claims 1 to 12, characterized in that the implanted casing (2) is connected to at least two pickup electrodes (35, 36) of auditory evoked potentials and spontaneous, the housing implanted (2) enclosing at least one electronic module (32) for collecting and connected signal processing to the pickup electrodes, a transmission module (33) connected to an antenna and gathering and processing module, for transmitting to the external housing (1) the signals generated by the collection module based on signals collected by the electrodes, and a power supply (31).
14. A device for hearing aid according to claim 13, characterized in that one of the pickup electrodes (35, 36) is adapted to be disposed on the round window.
15. An hearing aid according to one of claims 1 to 14, characterized in that the implanted casing (2) is further connected to at least one active stimulation electrode (38, 39) intended to be positioned proximate of the patient's inner ear or in the cochlea, the implanted casing (2) enclosing at least one electronic module (37) connected to pacing stimulation electrodes, a transmission module (33) connected to an antenna and the module stimulation, the stimulation module (37) being designed to generate electrical stimulation signals that are applied to the stimulation electrodes (38, 39) from signals received from the external housing 1 by means of the transmission module (33) via the antenna located in the implanted casing.
16. An hearing aid according to claim 15, characterized in that one of the active stimulation electrodes (38, 39) is adapted to be disposed on the round window of the middle ear of the patient.
17. An hearing aid according to one of claims 13 to 16, characterized in that the pickup electrodes (35, 36) and the stimulating electrodes (38, 39) are at least partially common.
18. An hearing aid according to one of claims 13 to 17, characterized in that the outer housing (1) further includes a signal transmission module connected to at least one antenna and the electronic module (11).
19. An hearing aid according to one of claims 14 to 18, characterized in that the implanted casing (2) is further connected to at least one electromechanical transducer vibrator intended to be positioned in a bony or cartilaginous zone close of the patient's inner ear, the implanted casing (2) enclosing at least one electronic module (37) connected to the stimulation vibrator, a transmission module (33) connected to an antenna and to the stimulation module, the stimulation module (37) being designed to generate electrical stimulation signals that are applied to the vibrator from signals received from the external housing 1 by means of the transmission module (33) via the antenna located in the housing implanté.x
EP03760752A 2002-06-21 2003-06-19 Partly implanted hearing aid Active EP1522208B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR0207738A FR2841429B1 (en) 2002-06-21 2002-06-21 Hearing aid device for the rehabilitation of patients with partial neurosensory deaths
FR0207738 2002-06-21
PCT/FR2003/001889 WO2004002193A1 (en) 2002-06-21 2003-06-19 Partly implanted hearing aid

Publications (2)

Publication Number Publication Date
EP1522208A1 true EP1522208A1 (en) 2005-04-13
EP1522208B1 EP1522208B1 (en) 2010-09-01

Family

ID=29719958

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03760752A Active EP1522208B1 (en) 2002-06-21 2003-06-19 Partly implanted hearing aid

Country Status (7)

Country Link
US (1) US7266208B2 (en)
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AT (1) AT480108T (en)
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US20060015155A1 (en) 2006-01-19
WO2004002193A1 (en) 2003-12-31
AU2003260612A1 (en) 2004-01-06
AT480108T (en) 2010-09-15
US7266208B2 (en) 2007-09-04
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FR2841429A1 (en) 2003-12-26
FR2841429B1 (en) 2005-11-11

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