WO2012010195A1 - Hearing instrument and method of operating the same - Google Patents
Hearing instrument and method of operating the same Download PDFInfo
- Publication number
- WO2012010195A1 WO2012010195A1 PCT/EP2010/060421 EP2010060421W WO2012010195A1 WO 2012010195 A1 WO2012010195 A1 WO 2012010195A1 EP 2010060421 W EP2010060421 W EP 2010060421W WO 2012010195 A1 WO2012010195 A1 WO 2012010195A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- external unit
- microphone arrangement
- audio signals
- horizontal orientation
- user
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/02—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels involving automatic stabilisation of the line of sight
-
- 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
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/405—Arrangements for obtaining a desired directivity characteristic by combining a plurality of transducers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
- H04R25/60—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles
- H04R25/604—Mounting or interconnection of hearing aid parts, e.g. inside tips, housings or to ossicles of acoustic or vibrational transducers
- H04R25/606—Mounting 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
-
- 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
- H04R25/40—Arrangements for obtaining a desired directivity characteristic
- H04R25/407—Circuits for combining signals of a plurality of transducers
Abstract
The invention relates to a method of operating a hearing instrument comprising an external unit (10) to be worn at a user's head and comprising a microphone arrangement (30) including at least two spaced apart microphones (32, 34) for capturing audio signals from ambient sound, an audio signal processing unit (36) for processing the audio signals captured by the microphone arrangement; and means (20) for stimulating the user's hearing according to the processed audio signals, the method comprising: fixing the external unit at the user's head, measuring the horizontal orientation of the microphone arrangement, and adjusting the processing of the audio signals according to the measured horizontal orientation of the microphone arrangement.
Description
Hearing instrument and method of operating the same
The present invention relates to a hearing instrument comprising an external unit to be worn at a user's head and comprising a microphone arrangement including at least two spaced-apart microphones for capturing audio signals from ambient sound, an audio signal processing unit for processing the audio signals and means for stimulating the user's hearing according to the processed audio signals.
DE 20 2006 017 662 Ul relates to a cochlear implant hearing instrument comprising an external unit including a microphone, a signal processor and a transmission coil, which external unit is fixed at the user's mastoid by implantable magnetic elements which interact with magnetic counterparts provided at the external unit. The magnetic elements are provided outside the transmission coil and are arranged opposite to each other across the coil.
US 4,352,960 likewise relates to a cochlear implant hearing instrument, wherein the processed audio signals are transmitted by the external part via a wireless transcutaneous link for the implanted part by using respective coil assemblies. Both the external unit and the implanted part of the system are provided with magnets for fixing the external part at the user's head relative to the implanted part. The external unit may comprise two magnets located within the coil opposite to each other or three magnets placed at 120° degrees intervals, wherein the polarity of the magnets may be chosen in a manner so that the external unit and the implantable part can be fixed to each other only in one specific orientation. US 7,266,208 B2 relates an electro-acoustic hearing aid, wherein an earphone is inserted within the ear canal and wherein an external unit carrying two microphones, which is connected to the ear phone via a cable, is fixed at the patient's skull by magnetic interaction with an implanted unit. A part of the casing of the external unit carrying the microphones is rotatable with regard to a base part of the casing carrying two magnets which interact with implanted counterparts. Thereby the microphone position can be adjusted independently of the implant position of the implantable part; when the desired microphone position has been found, the casing parts are locked with regard to each other by a screw.
EP 0 241 307 Bl relates to a cochlear implant hearing aid, wherein the external unit comprises a circular magnet which interacts with an implanted circular magnet, wherein the distance between the two magnets can be adjusted by a screw-type holder.
WO 2004/004416 Al relates to a cochlear implant hearing aid, wherein the external unit including the speech processor is fixed at the user's ear by using a retention element conforming the shape of the user's ear, and wherein the external unit is coupled to the retention element by magnetic forces.
Typically, hearing aids are equipped with two spaced-apart microphones, with the audio signal processing including acoustic beamforming based on the relative delay/phase shift between the audio signals from the two microphones due to the difference in the arrival times of an acoustic event, depending on the position of the sound source relative to the hearing aid. Such beamforming hearing aid systems are described, for example, in US 5,473,701 and EP 1 005 783 Bl .
For optimal acoustic beamforming performance, it is desired to have the two microphones oriented in a perfectly horizontal manner. Also, if the external unit comprises "non-circular" power and/or audio signal transmission coils, the relative orientation of the external unit to the implanted receiver coil is relevant for performance.
It is an object of the invention to provide for a hearing instrument having an external unit to be fixed at the user's head and comprising a microphone arrangement including at least two spaced-apart microphones, wherein deterioration of hearing instrument performance resulting from improper orientation of the external unit should be reduced. It is a further object to provide for a method of operating such instrument.
According to the invention, these objects are achieved by a method as defined in claim 1 and a hearing instrument as defined in claim 21, respectively. The invention is beneficial in that, by measuring the horizontal orientation of the microphone arrangement after fixation of the external unit at the user's head and adjusting the processing of the audio signals according to the measured horizontal orientation of the microphone
arrangement, the detrimental impact of an improper orientation of the microphone arrangement on hearing instrument performance can be reduced.
Preferably, processing of the audio signals is adjusted according to the measured deviation of the actual orientation of the microphone arrangement from a perfectly horizontal orientation. The invention is particularly beneficial for an acoustic beamforming functionality of the hearing instrument, wherein the normalized distance between the microphones or microphone ports in the horizontal plane is determined according to the measured deviation of the actual orientation of the microphone arrangement from a perfectly horizontal orientation, and wherein such normalized distance is used as a parameter in the acoustic beamforming algorithm for determining the delay between the audio signals of the two microphones.
The horizontal orientation of the microphone arrangement may be measured geometrically, in particular optically. Further preferred embodiments of the invention are defined in the dependent claims.
Hereinafter, examples of the invention will be illustrated by reference to the attached drawings, wherein:
Fig. 1 is a cross-sectional view of an example of a hearing aid according to the invention after implantation;
Fig. 2 is a block diagram of the system of Fig. 1 ;
Fig. 3 is a side view of the external unit in the direction of the arrow "A" of Fig. 1 ; and Figs. 4 to 7 show various examples of a magnetic fixation system of the external unit of a hearing aid according to the invention.
Fig. 1 shows a cross-sectional view of the mastoid region, the middle ear and the inner ear of a patient after implantation of an example of a hearing aid according to the invention, wherein the hearing aid is shown only schematically. The system comprises an external unit 10, which is worn outside the patient's body at the patient's head and an implantable unit 12 which is implanted under the patient's skin 14, usually in an artificial cavity created in the user's mastoid. The implantable unit 12 is connected via a cable assembly 18 to an actuator 20.
While in Fig. 1 an electromechanical actuator coupled to an ossicle 22 via a coupling rod 24 is shown, the actuator 20 also may be an electromechanical actuator coupled directly to the cochlear wall, an actuator directly acting on the perilymph or a cochlear electrode.
The external unit 10 is fixed at the patient's skin 14 in a position opposite to the implantable unit 12, for example, by magnetic forces created between a magnetic fixation arrangement 26 provided in the external unit 10 and a cooperating magnetic fixation arrangement 28 provided in the implantable unit 12, respectively.
An example of a block diagram of the system of Fig. 1 is shown in Fig. 2. The external unit 10, which is typically arranged at a location behind the user's ear, includes a microphone arrangement 30 comprising at least two spaced -apar microphones 32 and 34 for capturing audio signals from ambient sound, which audio signals are supplied to an audio signal processing unit 36 wherein they undergo, for example, acoustic beamforming. The audio signals processed by the audio signal processing unit 36 are supplied to a transmission unit 38 connected to a transmission antenna 40 in order to enable transcutaneous transmission of the processed audio signals via an inductive link 42 to the implantable unit 12 which comprises a receiver antenna 44 connected to a receiver unit 46 for receiving the transmitted audio signals. The received audio signals are supplied to a driver unit 48 which drives the actuator 20.
The external unit 10 also comprises a power supply 50, which may be a replaceable or rechargeable battery, a power transmission unit 52 and a power transmission antenna 54 for transmitting power to the implantable unit 12 via a wireless power link 56. The implantable unit 12 comprises a power receiving antenna 58 and a power receiving unit 60 for powering the implanted electronic components with power received via the power link 56.
Preferably, the audio signal antennas 40, 44 are separated from the power antennas 54, 58 in order to optimize both the audio signal link 42 and the power link 56. However, if a particularly simple design is desired, the antennas 40 and 54 and the antennas 44 and 58 could be physically formed by a single antenna, respectively.
The external unit 10 also comprises an interface 62 for communication with a control device 64 which serves for programming of the external unit 10. In particular, the control
device 64 is used for fitting of the audio signal processing algorithms applied in the audio signal processing unit 36 to the user o the hearing aid. in particular to the individual hearing loss of the user (to this end, certain parameters used by the audio signal processing algorithms have to be adjusted accordingly). The interface 62 may be for a wireless connection or for a plug-in cable connection.
Fig. 3 shows a side view of the external unit 10 in the direction of the arrow "A" of Fig. 1 , according to which the housing of the external unit 10 is provided with a microphone port 66 for the microphone 32 and with a microphone port 68 for the microphone 34 of the microphone arrangement 30. According to one embodiment, the housing of the external unit 10 is provided with an optical mark 70 which is fixed with regard to an (imaginary) line 72 connecting the microphone ports 66 and 68. Usually the mark 70 is designed to indicate a direction parallel to the connecting line 72. The mark 70 serves to indicate the horizontal orientation of the microphone arrangement 30 (i.e. the horizontal orientation of the microphone ports 66, 68), in particular the deviation of the orientation of the microphone arrangement 30 from a perfectly horizontal orientation. Such deviation, which is indicated in Fig. 3 by an angle a, in practice is due to a deviation of the actual position of the implantable unit 12 after implantation from the intended position (the position of the implantable unit 12 determines the position of the implanted fixation magnet 28 which, in turn, then determines the position of the fixation magnet 26 of the external unit and hence the position of the external unit 10, since the fixation magnets 26, 28 usually are designed in such a manner, as will be explained in more detail below, that the external unit 10 cannot be rotated relative to the implantable unit 12).
For optimal acoustic beamforming performance, it is desired to have the microphones/microphone ports oriented in a perfectly horizontal manner. Beamforming algorithms in general use the normalized distance between the microphones in the horizontal plane as a parameter (typically, a microphone port is provided in the housing of the external unit for each microphone, wherein each microphone is located close to its respective microphone port and the distance from the microphone port to the respective microphone is essentially the same for both microphones, so that the relevant parameter for beamforming is the normalized distance between microphone ports). A reduction of this normalized horizontal distance between the
microphones / microphone ports, on the one hand, results in a broadening of the beamformer cone (if the distance d between the microphone ports 66, 68 is sufficiently large, at least relatively small angular deviations a will not be critical in this regard). On the other hand, a deviation o the actual normalized horizontal distance d' from the value used by the beamforming algorithm will result in a deviation of the actual direction of the beamformer cone in the horizontal plane from the intended/desired direction. Usually it is desired that the beamformer cone points into the direction in front of the patient's head ("zero direction"). By adjusting the parameter corresponding to the horizontal normalized distance between the microphone ports, the angular direction of the beamformer cone can be adjusted. Hence, in order to make the beamformer cone correctly point into the "zero direction", it is necessary to know the horizontal normalized distance between the microphone ports.
According to the invention, this parameter can be determined by determining the horizontal orientation of the microphone arrangement 30 by measuring the angle a, i.e. the deviation of the direction indicated by the mark 70 from horizontal. This can be done by an optical measurement once the external unit 10 has been fixed at the user's head. The thus determined horizontal orientation of the microphone arrangement 30 then can be entered into the external unit 10 during the fitting process via the control unit 64 and the interface 62, usually by the person doing the fitting process. Since the orientation of the external unit 10 usually is determined by the position of the implanted unit 12, such calibration concerning the horizontal orientation of the microphone arrangement 30 has to be done only once after implantation of the implantable unit 12.
As an alternative to such optical/geometrical measurement of the horizontal orientation of the microphone arrangement the external unit 10 may be provided with an inclinometer 74 (indicated in dashed lines in Fig. 2) which measures the orientation of the external unit 10, and hence the orientation of the microphone arrangement 30, with regard to horizontal and which outputs a corresponding signal to the audio signal processing unit 36 in order to determine the normalized horizontal distance d' between the microphone ports 66, 68.
Figs. 4 to 7 show various embodiments of how the magnetic fixation arrangement 26 of the external unit 10 may be designed in order to ensure that the orientation of the external unit 10 is essentially constant during use of the hearing aid (i.e. to prevent the external unit 10 from
being rotated relative to the implantable unit 12). It is to be understood that, while in Figs. 4 to 7 only the magnets of the external unit are shown, corresponding counterparts of opposite polarity are provided at the implantable unit 12.
Fig. 4 shows an example, wherein the polarity of the magnets has a non-circular symmetry in the vertical plane. The line connecting the N and S poles of the permanent magnet 26 extends in a vertical plane in order to prevent rotation of the external unit 10 relative to the implantable unit 12. In particular, such vertical plane usually corresponds to a plane normal to the axis of the transmission coil(s) 40, 54.
According to an alternative embodiment, a central magnet having a polarity of circular symmetry in a vertical plane may be replace by a plurality of such magnets which are distributed according to a non-circular symmetry in the vertical plane. Such a configuration is expected to reduce power losses caused by eddy currents. To this end, the magnets also may be provided with cuts.
Fig. 5 shows an alternative arrangement of the fixation magnets, wherein the external unit 10 comprises two fixation magnets 26A, 26B which are located outside the transmission coil(s) 40, 54 and opposite to each other, with the line connecting the poles of each magnet being oriented essentially horizontal, i.e. parallel to the axis of the coil(s) 40, 54, and with the magnets 26A and 26B having opposite polarity. By placing the magnets outside the coil(s) 44, 54, power losses due to eddy currents can be reduced. Preferably, at least some of the magnets or all of the magnets are located outside the area enclosed by the coils.
A modification of the concept of Fig. 5 is shown in Fig. 6, wherein the magnet 26A is replaced by two magnets 26A which are spaced-apart in the peripheral direction of the coil(s) 40, 54.
Fig. 7 shows another variation of the principle of Fig. 5, wherein the magnets 26A and 26B have a non-circular symmetry in the plane normal to the axis of the coil(s) 40, 54.
In general, a defined orientation of the external unit 10 relative to the implantable unit 12 can be obtained by arranging a plurality of magnets according to a non-circular symmetry with
regard to a plane normal to the axis of the coils or by providing a central magnet having its polarity according to a non-circular symmetry regarding such plane.
Claims
A method of operating a hearing instrument comprising an external unit (10) to be worn at a user's head and comprising a microphone arrangement (30) including at least two spaced apart microphones (32, 34) for capturing audio signals from ambient sound, an audio signal processing unit (36) for processing the audio signals captured by the microphone arrangement; and means (20) for stimulating the user's hearing according to the processed audio signals, the method comprising: fixing the external unit at the user's head, measuring the horizontal orientation of the microphone arrangement, and adjusting the processing of the audio signals according to the measured horizontal orientation of the microphone arrangement.
The method of claim 1, wherein the processing of the audio signals is adjusted according to the measured deviation of the actual orientation of the microphone arrangement (30) from a perfectly horizontal orientation.
The method of claim 2, wherein the processing of the audio signals includes an acoustic beamforming algorithm, and wherein the normalized distance between the microphones (32, 34, 66, 68) in a horizontal plane is determined according to the measured deviation of the actual orientation of the microphone arrangement from a perfectly horizontal orientation and is used as a parameter in the acoustic beamforming algorithm for determining the delay between the audio signals of the two microphones.
The method of one of the preceding claims, wherein the horizontal orientation of the microphone arrangement (30) is measured geometrically.
The method of claim 4, wherein the horizontal orientation of the microphone arrangement (30) is measured optically.
The method of claim 5, wherein the external unit (10) comprises an optical mark (70) which is fixed with regard to a line (72) connecting two of the microphones (32, 34, 66, 68).
7. The method of claim 6, wherein the optical mark (70) indicates a direction parallel to the line (72) connecting two of the microphones (32, 34. 66, 68).
8. The method of claim 7, wherein the horizontal orientation of the microphone arrangement (30) is measured by measuring the deviation of the orientation of the optical mark (70) from a perfectly horizontal orientation.
9. The method of one of claims 1 to 3, wherein the horizontal orientation of the microphone arrangement (30) is measured by an inclinometer (74) integrated within the external unit (10).
10. The method of one of the preceding claims, wherein the external unit (10) is worn behind or above the ear.
11. The method of one of the preceding claims, wherein the hearing instrument comprises an implanted part (12, 20) including an implanted output transducer (20) as the stimulating means.
12. The method of claim 11, wherein the external unit (10) comprises a transmission coil (54) for establishing a transcutaneous power link (56) to a receiver coil (58) of the implanted part for supplying the implanted part with power.
13. The method of one of claims 1 1 and 12, wherein the audio signal processing unit (36) forms part of the external unit (10).
14. The method of claim 13, wherein the external unit (10) comprises means (38, 40) for transmitting the processed audio signals via a transcutaneous audio link (42) to the implantable part (12, 20).
15. The method of one of the preceding claims, wherein the external unit (10) comprises at least one permanent magnet (26, 26A, 26B) which cooperates with at least one implanted permanent magnet (28) in order to fix the external unit at the user's head.
16. The method of claim 15, wherein the magnets (26 A, 26B) are positioned according to a non-circular symmetry.
17. The method of one of claims 15 and 16, wherein the polarity of the magnets (26) has a non-circular symmetry.
18. The method of claim 17, wherein at least one of the magnets (26) is oriented in such a manner that a line connecting the poles (N, S) is parallel to a plane of normal to the axis of a transmission coil (40, 54) of the external unit (10).
19. The method of one of claims 15 to 18, wherein at least one of the magnets (26A, 26B) of the external unit is located outside the area enclosed by the transmission coil(s) (40, 54).
20. The method of claim 19, wherein all of the magnets (26A, 26B) of the external unit (10) are located outside the area enclosed by the transmission coil(s) (40, 54).
21. A partially implantable hearing instrument, comprising: an external unit (10) to be worn at a user's head, comprising a microphone arrangement (30) including at least two spaced apart microphones (32, 34) for capturing audio signals from ambient sound; an audio signal processing unit (36) for processing the audio signals captured by the microphone arrangement; and means (20) for stimulating the user's hearing according to the processed audio signals; means (70) for measuring the horizontal orientation of the microphone arrangement, wherein the audio signal processing unit is adapted to adjust the audio signal processing according to the measured horizontal orientation of the microphone arrangement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2010/060421 WO2012010195A1 (en) | 2010-07-19 | 2010-07-19 | Hearing instrument and method of operating the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2010/060421 WO2012010195A1 (en) | 2010-07-19 | 2010-07-19 | Hearing instrument and method of operating the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2012010195A1 true WO2012010195A1 (en) | 2012-01-26 |
Family
ID=43640013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2010/060421 WO2012010195A1 (en) | 2010-07-19 | 2010-07-19 | Hearing instrument and method of operating the same |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2012010195A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9532151B2 (en) | 2012-04-30 | 2016-12-27 | Advanced Bionics Ag | Body worn sound processors with directional microphone apparatus |
| CN107820186A (en) * | 2016-09-14 | 2018-03-20 | 奥迪康有限公司 | hearing device with fixing device |
| CN111135459A (en) * | 2020-01-16 | 2020-05-12 | 上海力声特医学科技有限公司 | Artificial cochlea implant |
| EP4008397A1 (en) * | 2018-02-15 | 2022-06-08 | Advanced Bionics AG | Headpieces and implantable cochlear stimulation systems including the same |
| US11471679B2 (en) | 2017-10-26 | 2022-10-18 | Advanced Bionics Ag | Headpieces and implantable cochlear stimulation systems including the same |
| US11476025B2 (en) | 2015-12-18 | 2022-10-18 | Advanced Bionics Ag | MRI-compatible magnet apparatus |
| US11752338B2 (en) | 2017-04-25 | 2023-09-12 | Advanced Bionics Ag | Cochlear implants having impact resistant MRI-compatible magnet apparatus |
| US11779754B2 (en) | 2017-04-11 | 2023-10-10 | Advanced Bionics Ag | Cochlear implants, magnets for use with same and magnet retrofit methods |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9532151B2 (en) | 2012-04-30 | 2016-12-27 | Advanced Bionics Ag | Body worn sound processors with directional microphone apparatus |
| US11476025B2 (en) | 2015-12-18 | 2022-10-18 | Advanced Bionics Ag | MRI-compatible magnet apparatus |
| CN107820186A (en) * | 2016-09-14 | 2018-03-20 | 奥迪康有限公司 | hearing device with fixing device |
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| US10362411B2 (en) | 2016-09-14 | 2019-07-23 | Oticon A/S | Hearing device with fixation arrangement |
| CN107820186B (en) * | 2016-09-14 | 2021-08-17 | 奥迪康有限公司 | Hearing device with fixing means |
| US11779754B2 (en) | 2017-04-11 | 2023-10-10 | Advanced Bionics Ag | Cochlear implants, magnets for use with same and magnet retrofit methods |
| US11752338B2 (en) | 2017-04-25 | 2023-09-12 | Advanced Bionics Ag | Cochlear implants having impact resistant MRI-compatible magnet apparatus |
| US11471679B2 (en) | 2017-10-26 | 2022-10-18 | Advanced Bionics Ag | Headpieces and implantable cochlear stimulation systems including the same |
| EP4008397A1 (en) * | 2018-02-15 | 2022-06-08 | Advanced Bionics AG | Headpieces and implantable cochlear stimulation systems including the same |
| US11638823B2 (en) | 2018-02-15 | 2023-05-02 | Advanced Bionics Ag | Headpieces and implantable cochlear stimulation systems including the same |
| CN111135459B (en) * | 2020-01-16 | 2023-06-20 | 上海力声特医学科技有限公司 | Artificial cochlea implant |
| CN111135459A (en) * | 2020-01-16 | 2020-05-12 | 上海力声特医学科技有限公司 | Artificial cochlea implant |
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