Implantable medical device arrangements

1. A totally-implantable bilateral hearing prosthesis, comprising:

first and second stimulation arrangements configured to be implanted at a left and right ear, respectively, of a recipient;

one or more sound input elements configured to receive sound signals; and

a single-body calvaria implant electrically connected to the first and second stimulation arrangements, and comprising:

a hermetically-sealed housing,

a bilateral sound processor disposed in the housing, and

a bilateral stimulator unit disposed in the housing,

wherein the bilateral sound processor and bilateral stimulator unit are configured to convert the sound signals received via the one or more sound input elements into bilateral stimulation signals that are delivered to the recipient via the first and second stimulation arrangements.

2. The bilateral hearing prosthesis of claim 1 , wherein the one or more sound input elements include at least one implantable forehead microphone configured to be positioned on the frontal bone of the recipient.

3. The bilateral hearing prosthesis of claim 2 , wherein the at least one implantable forehead microphone comprises first and second laterally spaced implantable forehead microphones.

4. The bilateral hearing prosthesis of claim 2 , wherein the one or more sound input elements include at least one external sound input element.

5. The bilateral hearing prosthesis of claim 4 , wherein the single-body calvaria implant includes a wireless transceiver, and wherein the at least one external sound input element comprises an in-the-ear (ITE) microphone unit that includes a microphone and wireless transmitter for wireless streaming of data to the wireless transceiver in the single-body body calvaria implant.

6. The bilateral hearing prosthesis of claim 1 , further comprising:

a plurality of hermetic electrical connectors that electrically connect at least the first and second stimulation arrangements to the bilateral stimulator unit.

7. The bilateral hearing prosthesis of claim 1 , wherein the first and second stimulation arrangements comprise first and second intra-cochlear stimulating assemblies configured to be implanted in the left and right inner ears, respectively, of the recipient.

8. The bilateral hearing prosthesis of claim 1 , wherein the single-body calvaria implant includes a rechargeable battery, an implantable radio-frequency (RF) coil, an RF transceiver, and an implantable magnetic component co-located with the RF coil.

9. The bilateral hearing prosthesis of claim 8 , wherein the RF coil is disposed inside the housing.

10. A system comprising a recharging unit and the bilateral hearing prosthesis of claim 8 , wherein the recharging unit includes an external RF coil and a magnet co-located with the external RF coil configured to align the external RF coil with the implantable RF coil to form a transcutaneous inductive charging link for transfer of power signals from the recharging unit to the single-body calvaria implant.

11. The system of claim 10 , wherein the recharging unit is a wireless recharging unit that includes an external rechargeable battery, and wherein the external RF coil is a dual-use coil configured to inductively receive power signals from a charging station for recharging of the external rechargeable battery.

12. A hearing prosthesis method, comprising:

positioning an implantable module in a recipient, wherein the implantable module includes a sound processor and a stimulator unit;

positioning at least one totally-implanted microphone in a recipient's forehead region adjacent to a frontal bone of the recipient's skull;

receiving, with the totally-implanted microphone, sound signals through forehead tissue of the recipient;

converting the sound signals into electrical signals; and

providing the electrical stimulation signals to the sound processor in the implantable module for conversion into stimulation signals for delivery to the recipient.

13. The hearing prosthesis method of claim 12 , wherein positioning the at least one totally-implanted microphone in the recipient's forehead region adjacent to a frontal bone of the recipient's skull comprises:

positioning laterally-spaced first and second implantable microphone in the recipient's forehead region.

14. The hearing prosthesis method of claim 12 , wherein positioning the implantable module in a recipient comprises:

positioning a single-body implant at a calvaria of the recipient, wherein the single-body implant includes a rechargeable battery, an implantable radio-frequency (RF) coil, an RF transceiver, and an implantable magnetic component co-located with the RF coil.

15. The hearing prosthesis method of claim 14 , further comprising:

positioning a recharging unit on the recipient's head, wherein the recharging unit includes an external RF coil and a magnet co-located with the external RF coil configured to align the external RF coil with the implantable RF coil to form a transcutaneous inductive charging link for transfer of power signals from the recharging unit to the single-body implant.

16. The hearing prosthesis method of claim 15 , wherein the recharging unit is a wireless recharging unit that includes an external rechargeable battery, and wherein the method further comprises:

inductively receiving, via the external RF coil, power signals from a charging station for recharging of the external rechargeable battery.

17. A totally-implantable bilateral hearing prosthesis, comprising:

at least one implantable microphone configured to be implanted in a head of the recipient and to receive sound signals through tissue of the recipient;

an implantable module including a sound processor and a stimulator unit collectively configured to convert the sound signals into electrical stimulation signals; and

first and second stimulation arrangements each electrically connected to the implantable module and configured to deliver the electrical stimulation signals to left and right ears, respectively, of the recipient.

18. The bilateral hearing prosthesis of claim 17 , wherein the implantable module comprises:

a single-body implant positioned at a calvaria of the recipient, wherein the single-body implant includes a rechargeable battery, an implantable radio-frequency (RF) coil, an RF transceiver, and an implantable magnetic component co-located with the RF coil.

19. The bilateral hearing prosthesis of claim 17 , wherein the one or more sound input elements include at least one implantable forehead microphone configured to be positioned on the frontal bone of the recipient.

20. The bilateral hearing prosthesis of claim 17 , wherein the first and second stimulation arrangements comprise first and second intra-cochlear stimulating assemblies configured to be implanted in the left and right inner ears, respectively, of the recipient.