Partially inserted cochlear implant

• US 6,556,870 B2
• Filed: 01/31/2001
• Issued: 04/29/2003
• Est. Priority Date: 01/31/2000
• Status: Expired due to Term

• Current Assignee: MED-EL Elektromedizinische Gerate GmbH (MED-EL Corporation)
• Original Assignee: MED-EL Elektromedizinische Gerate GmbH (MED-EL Corporation)
• Inventors: Zierhofer, Clemens M., Hochmair, Erwin S., Hochmair, Ingeborg J.
• Primary Examiner(s): Lazarus; Ira S.
• Assistant Examiner(s): O MALLEY, KATHRYN S
• Application Number:
  US09/774,391
• Publication Number:
  US 20010047193A1
• Time in Patent Office: 818 Days
• Field of Search: 607/55,56,57,137 623/10
• US Class Current: 607/57
• CPC Class Codes: A61N 1/36039 fitting procedures
• CPC Class Codes: H04R 2225/025 In the ear hearing aids [ITE] hearing aids
• CPC Class Codes: H04R 2225/31 Aspects of the use of accumulators in hearing aids, e.g. rechargeable batteries or fuel cells
• CPC Class Codes: H04R 25/554 using a wireless connection, e.g. between microphone and amplifier or using Tcoils
• 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 25/652 Ear tips; Ear moulds hybrid ear moulds or post-processing thereof for their customisation H04R25/659
• CPC Class Codes: H04R 25/656 Non-customized, universal ear tips, i.e. ear tips which are not specifically adapted to the size or shape of the ear or ear canal

Abstract

A cochlear implant system has a signal processor that fits in the ear canal of a user. The signal processor processes an acoustic signal present in the ear of the user to produce a representative radio signal. A power transmitter transmits an electrical power signal through the skin of the user. A cochlear implant receives the radio signal and the electrical power signal and produces for the auditory nerve of the user an electrical stimulation signal representative of the acoustic signal.

Claims

1. A signal processing device for a cochlear implant, the device comprising:

a device body that fits into the ear canal of a user, the device body containing;

(i) a microphone that converts an acoustic signal present at the device body into a representative electrical signal;

(ii) a signal processor that performs signal processing of the representative electrical signal to form a cochlear implant signal; and

(iii) a transmitter that converts the cochlear implant signal into a radio signal for transmission to a cochlear implant.

2. A device according to claim 1, wherein the device body further includes:

a mechanical stimulation module that delivers to the inner ear structure of the user a mechanical stimulation signal representative of a portion of the acoustic signal,

wherein the cochlear implant signal is representative of a first subrange of frequencies in the acoustic signal, and the mechanical stimulation signal is representative of a second subrange of frequencies in the acoustic signal.

3. A device according to claim 1, wherein the processing performed by the signal processor includes at least one of compression, beamforming, and filtering.

4. A device according to claim 1, wherein the signal processing includes continuous interleaved sampling (CIS) digital signal processing.

5. A device according to claim 1, wherein the signal processing includes channel specific sampling sequences (CSSS).

6. A device according to claim 1, wherein the signal processing includes spectral peak (SPEAK) digital signal processing.

7. A device according to claim 1, wherein the signal processing includes compressed analog (CA) signal processing.

8. A cochlear implant system comprising:

a signal processor that fits in the ear canal of a user and processes an acoustic signal present in the ear of the user to produce a representative radio signal;

a power transmitter that transmits an electrical power signal through the skin of the user; and

a cochlear implant that receives the radio signal and the electrical power signal and produces for the auditory nerve of the user an electrical stimulation signal representative of the acoustic signal.

9. A system according to claim 8, wherein the signal processor further includes:

a mechanical stimulation module that delivers to the inner ear structure of the user a mechanical stimulation signal representative of a portion of the acoustic signal, wherein the cochlear implant signal is representative of a first subrange of frequencies in the acoustic signal, and the mechanical stimulation signal is representative of a second subrange of frequencies in the acoustic signal.

10. A system according to claim 8, further comprising:

an implanted battery module that powers the cochlear implant, and that is rechargeable responsive to the transmitted electrical power signal.

11. A system according to claim 8, wherein the processing performed by the signal processor includes at least one of compression, beamforming, and filtering.

12. A system according to claim 8, wherein the processing performed by the signal processor includes continuous interleaved sampling (CIS) digital signal processing.

13. A system according to claim 8, wherein the processing performed by the signal processor includes channel specific sampling sequences (CSSS).

14. A system according to claim 8, wherein the processing performed by the signal processor includes spectral peak (SPEAK) digital signal processing.

15. A system according to claim 8, wherein the processing performed by the signal processor includes compressed analog (CA) signal processing.

16. A system according to claim 8, wherein the cochlear implant uses extracochlear electrodes to deliver the electrical stimulation signal.

17. A system according to claim 8, wherein the cochlear implant uses cochleostomy window associated electrodes to deliver the electrical stimulation signal.

18. A system according to claim 8, wherein the cochlear implant uses multi-channel array electrodes partially inserted into the cochlea of the user to deliver the electrical stimulation signal.

19. A system according to claim 8, wherein the cochlear implant uses multi-channel array electrodes fully inserted into the cochlea of the user to deliver the electrical stimulation signal.