Implantable hearing aid with tinnitus masker or noiser

• US 6,394,947 B1
• Filed: 12/21/1999
• Issued: 05/28/2002
• Est. Priority Date: 12/21/1998
• Status: Expired due to Fees

• Current Assignee: Cochlear Limited
• Original Assignee: Cochlear Limited
• Inventors: Leysieffer, Hans
• Primary Examiner(s): Shaver, Kevin
• Assistant Examiner(s): Natnithithadha, Navin
• Application Number:
  US09/468,860
• Time in Patent Office: 889 Days
• Field of Search: 600/25,559,28,26,27 607/55,56,57,136,137 381/68-69.2,68.1,68.2,68.3,68.4,68.6 181/129,120,134,135 623/10
• US Class Current: 600/25
• CPC Class Codes: H04R 2460/13 Hearing devices using bone conduction transducers
• CPC Class Codes: H04R 25/505 using digital signal processing
• CPC Class Codes: H04R 25/606 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
• CPC Class Codes: H04R 25/75 Electric tinnitus maskers providing an auditory perception

Abstract

Partially or fully implantable hearing aid for rehabilitation of an inner ear hearing disorder, with a microphone (10) which delivers an audio signal, an electronic signal processing and amplification unit (40, 50, 80, 140, 141) which is located in an audio signal-processing electronic hearing aid path, an implantable electromechanical output converter (20) and a unit (60) for power supply of the implant. The hearing aid is provided with an electronic module (90, 140, 141) for rehabilitation of tinnitus and it generates the signals necessary for a tinnitus masking or noiser function and feeds them into the audio signal processing path of the hearing implant.

Claims

1. An at least partially implantable hearing aid for rehabilitation of an inner ear hearing disorder comprising a microphone which outputs an audio signal, an implantable electromechanical output converter for direct mechanical inner ear stimulation via a coupling element, an electronic signal processing and amplification unit which is located in an audio signal processing electronic hearing aid path from the microphone to the implantable electromechanical output converter and which receives said audio signal, a power unit for electrically powering the hearing aid, and an electronic module for rehabilitation of tinnitus which generates tinnitus masking or noiser signals and feeds them into said audio signal processing path in a manner driving said electromechanical output converter.

2. Hearing aid as claimed in claim 1, wherein the electronic unit has means for adapting the signals generated thereby to patient-specific signal parameters meeting requirements for tinnitus masking or noiser function requirements of various individual patients.

3. Hearing aid as claimed in claim 2, wherein the electronic signal processing and amplification unit comprises an amplifier, an audiological signal processing stage which is connected to receive an output signal of the amplifier and a driver amplifier which is connected upstream of the electromechanical output converter.

4. Hearing aid as claimed in claim 3, wherein the electronic module further comprises a signal generator arrangement for generating the tinnitus masking or noiser signals and a summing element connected between the signal processing stage and the driver amplifier, via which both the output signal of the audiological signal processing stage and the signals of the signal generator arrangement pass to the driver amplifier.

5. Hearing aid as claimed in claim 3, wherein the audiological signal processing stage is a digital signal processor which both conditions the audio signal and generates the tinnitus masking or noiser signals and combines the tinnitus masking or noiser signals with the audio signal.

6. Hearing aid as claimed in claim 5, wherein an analog to digital converter is connected upstream of the signal processor and a digital to analog converter is connected downstream of the signal processor.

7. Hearing aid as claimed in claim 6, wherein the digital to analog converter and the driver amplifier are combined in a single module.

8. Hearing aid as claimed in claim 5, wherein the signal processor has a data storage for storing at least one of the patient-specific parameters and parameters for generating the tinnitus masking or noiser signals.

9. Hearing aid as claimed in claim 3, wherein at least part of the audiological signal processing stage is controlled by a microcontroller.

10. Hearing aid as claimed in claim 9, wherein the microcontroller has a data storage for storing the patient-specific signal parameters.

11. Hearing aid as claimed in claim 5, wherein the signal processor itself comprises a microcontroller with a data storage for storing at least one of the patient-specific parameters and parameters for generating the tinnitus masking or noiser signals.

12. Hearing aid as claimed in claim 8, wherein a telemetry unit is provided for inputting data into the data storage.

13. Hearing aid as claimed in claim 12, further comprising an external programming system which communicates with the telemetry unit.

14. Hearing aid as claimed in claim 12, wherein the hearing aid is fully implantable, the signal processing and amplification unit, the electronic module and the telemetry unit being housed together with the power supply unit in a hermetically sealed, biocompatible implant housing.

15. Hearing aid as claimed in claim 14, wherein the electronic module is connected via an implant line to the microphone which is subcutaneously implantable in a rear wall of an auditory canal.

16. Hearing aid as claimed in claim 15, wherein the electronic module is connected via an implantable line to the electromechanical output converter.

17. Hearing aid as claimed claim 1, wherein the output converter is coupled to a coupling element for transmission of output-side mechanical converter vibrations to an ossicle of the middle ear chain.

18. Hearing aid as claimed in claim 1, wherein the output converter is coupleable to the ossicle chain or the inner ear via an air gap.

19. Hearing aid as claimed in claim 14, further comprising an external system for transcutaneous transfer of patient-specific hearing aid and tinnitus masking or noiser programming data to the telemetry unit.

20. Hearing aid as claimed in claim 19, wherein the power supply unit is a secondary, rechargeable element, the telemetry unit is additionally a power receiving circuit for implant-side availability of recharging energy for the power supply unit, and wherein the external system is also a charger for the power supply unit.

21. Hearing aid as claimed in claim 14, further comprising a portable remote control unit for adjusting or changing the hearing aid and tinnitus masking or noiser functions thereof.

22. Hearing aid as claimed in claim 1, wherein the hearing is partially implantable, having an implant part comprising the output converter, a power and signal receiving interface and an electronic system which is connected between the receiving interface and the output converter with components necessary for power supply and data regeneration, and an external system part comprising the microphone, a signal processing module with the signal processing and amplification unit, said electronic module, a driver unit and a power and signal transmitting interface connected to an output of the driver unit.

23. Hearing aid as claimed in claim 22, further comprising an external system for transfer of patient-specific hearing aid and tinnitus masker or noiser programming data to the electronic module of the external system part.