Integrated implantable hearing device, microphone and power unit

• US 9,314,625 B2
• Filed: 09/10/2013
• Issued: 04/19/2016
• Est. Priority Date: 02/16/2005
• Status: Expired due to Fees

• Current Assignee: Cochlear Limited
• Original Assignee: Cochlear Limited
• Inventors: Kasic, James Frank II, Easter, James R
• Primary Examiner(s): MATTHEWS, CHRISTINE HOPKINS
• Application Number:
  US14/023,278
• Publication Number:
  US 20140012350A1
• Time in Patent Office: 952 Days
• Field of Search: 600/25, 607/57
• US Class Current: 1/1
• CPC Class Codes: A61N 1/36038 Cochlear stimulation
• CPC Class Codes: A61N 1/37223 Circuits for electromagnetic coupling
• CPC Class Codes: A61N 1/3787 from an external energy source
• CPC Class Codes: H04R 2225/021 Behind the ear [BTE] 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 2225/67 Implantable hearing aids or parts thereof not covered by H04R25/606
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 25/505 using digital signal processing
• 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

Abstract

An implantable hearing unit is provided that includes an implantable microphone, a rechargeable power storage device and a speech signal processor. The hearing unit further includes a signal coupling device that is adapted for electrical interconnection to an implantable auditory stimulation device, which is operative to stimulate an auditory component of a patient. Such a stimulation device may include cochlear implants, brain stem stimulation systems, auditory nerve stimulation systems, and middle or inner ear transducer systems. The signal coupling device is operative to provide processed drive signals from the signal processor to the stimulation device as well provide power from the power storage device to operate the stimulation device. In one arrangement, the signal coupling device is a wireless coupling between first and second coils. In such an arrangement, the hearing unit may be utilized with an existing implanted stimulation device to make that device a fully implanted hearing system.

Claims

1. An implantable hearing prosthesis, comprising:

a first implantable apparatus including an implantable signal processor configured to generate drive signals for activating an implantable auditory stimulation device;

a second implantable apparatus including the implantable auditory stimulation device; and

a flexible communications device extending between said first implantable apparatus and said second implantable apparatus; and

a selectively attachable and detachable connector configured to mechanically connect and disconnect the communications device from one of the first implantable apparatus or the second implantable apparatus, wherein

said first implantable apparatus further comprises a modulator configured to modulate said drive signals prior to said drive signals being transmitted to said implantable stimulation device, wherein

the implantable auditory stimulation device is a cochlear electrode array configured for insertion into a cochlea of a recipient, and

said drive signals drive the cochlear electrode array to stimulate the cochlea with electrical current.

2. The implantable hearing prosthesis of claim 1, wherein:

the first implantable apparatus is an implantable module including;

the implantable signal processor;

an implantable microphone operative to transcutaneously receive sound and generate a microphone output signal; and

an implantable rechargeable battery for powering at least said microphone and said processor.

3. The implantable hearing prosthesis of claim 1, wherein:

said first implantable apparatus further comprises a demodulator for demodulating modulated drive signals.

4. The implantable hearing prosthesis of claim 1, wherein:

said connector includes only two electrical contact conductors.

5. The implantable hearing prosthesis of claim 1, wherein:

communication between the first implantable apparatus and the second implantable apparatus is established by an inductive link, wherein the link is established by a transmitting coil and a receiving coil, wherein the transmitting coil is removably mated with the receiving coil, and wherein the transmitting coil and the receiving coil are configured to be completely implantable.

6. The implantable hearing prosthesis of claim 1, wherein:

the first implantable apparatus is configured to provide a modulated signal modulated by the modulator to the flexible communications device; and

the flexible communications device is configured to communicate the modulated signal from the first implantable apparatus to the second implantable apparatus.

7. The implantable hearing prosthesis of claim 1, wherein:

the flexible communications device is configured to deliver modulated signals modulated by the modulator from the first implantable apparatus to the second implantable apparatus.

8. The implantable hearing prosthesis of claim 1, wherein:

the implantable hearing prosthesis is configured to modulate said drive signals prior to said drive signals being transmitted to said second implantable apparatus via said flexible communications device.

9. A method, comprising:

positioning a first component of an implantable hearing prosthesis at a first subcutaneous location in a recipient, said first component including an implantable auditory stimulation device;

positioning a second component of the implantable hearing prosthesis at a second subcutaneous location in a recipient, the second component including an implantable signal processor configured to generate drive signals for activating the implantable auditory stimulation device;

releasably mechanically connecting said first and second components utilizing a communications conductor configured to establish communication between the first and second component;

evoking a hearing percept as a result of transmission of drive signals from the second component to the first component through the communications conductor; and

after evoking the hearing percept, removing the second component from the recipient and locating a third component at a subcutaneous location in the recipient, the third component including a third implantable signal processor configured to generate drive signals for causing the implantable auditory stimulation device to evoke a hearing percept.

10. The method of, claim 9, further comprising:

releasing the communications conductor from at least one of the first or second components; and

releasably mechanically connecting the first and third components utilizing the communications conductor.

11. The method of claim 9, wherein:

the first component includes a receiver and an intracochlear electrode; and

the second component is a module that includes an implantable microphone, a rechargeable power supply and a processor.

12. The method of claim 9, further comprising:

subcutaneously routing the communications conductor to a location extending between said first and second components.

13. The method of claim 11, further comprising:

transmitting from said second component to said first component, through said communications conductor, signals for use in actuating said intracochlear electrode.

14. The method of claim 9, wherein the implantable auditory stimulation device includes a cochlear electrode array including at least 22 electrodes, and wherein the action of releasably mechanically connecting comprises establishing communication between said first and second components via only two conductors.

15. The method of claim 9, further comprising:

after releasably mechanically connecting said first and second components, releasing the connection while at least the first component is implanted in a recipient.

16. A method, comprising:

positioning a first component of an implantable hearing prosthesis at a first subcutaneous location in a recipient, said first component including an implantable auditory stimulation device;

positioning a second component of the implantable hearing prosthesis at a second subcutaneous location in a recipient, the second component including an implantable signal processor configured to generate drive signals for activating the implantable auditory stimulation device; and

releasably mechanically connecting said first and second components utilizing a communications conductor configured to establish communication between the first and second component, wherein

the action of releasably mechanically connecting said first and second components utilizing a communications conductor configured to establish communication between the first and second component occurs while at least the first component is implanted in a recipient.

17. An implantable hearing prosthesis, comprising:

a first implantable apparatus including an implantable signal processor configured to generate drive signals for activating an implantable auditory stimulation device;

a second implantable apparatus including the implantable auditory stimulation device; and

a flexible communications device extending between said first implantable apparatus and said second implantable apparatus; and

a selectively attachable and detachable connector configured to mechanically connect and disconnect the communications device from one of the first implantable apparatus or the second implantable apparatus, wherein

said first implantable apparatus further comprises a modulator configured to modulate said drive signals prior to said drive signals being transmitted to said implantable stimulation device; and

wherein

the implantable hearing prosthesis further comprises;

a third implantable apparatus including an implantable microphone; and

a second communications device separate from the flexible communications device, the second communications device configured to communicate electrical signals from the third implantable apparatus to the first implantable apparatus.