Pulse Width Adaptation for Inductive Links

• US 20090043361A1
• Filed: 07/30/2008
• Published: 02/12/2009
• Est. Priority Date: 08/10/2007
• Status: Active Grant

• Current Assignee: MED-EL Elektromedizinische Gerate GmbH (MED-EL Corporation)
• Original Assignee: MED-EL Elektromedizinische Gerate GmbH (MED-EL Corporation)
• Inventors: Mitterer, Andreas, Rodriguez-Navarro, Jose, Baumgartner, Josef, Stoffaneller, Martin
• Granted Patent: US 9,795,794 B2
• Time in Patent Office: Days
• US Class Current: 607/60
• CPC Class Codes: A61N 1/372 Arrangements in connection with the implantation of stimulators
• CPC Class Codes: A61N 1/37211 Means for communicating with stimulators
• CPC Class Codes: A61N 1/37223 Circuits for electromagnetic coupling
• CPC Class Codes: A61N 1/3727 characterised by the modulation technique

Abstract

A signal processor is described for communication with an implanted medical device. An external processor transmits to the implanted medical device an implant data signal having a sequence of HI and LOW logic states at a fixed data bit rate. The pulse width durations of the HI and LOW logic states is adjustable in response to feedback telemetry data from the implantable medical device.

Claims

1. A signal processor for communication with an implanted medical device, the signal processor comprising:

an external processor for transmitting to the implanted medical device an implant data signal having a sequence of HI and LOW logic states at a fixed data bit rate having adjustable pulse width durations in response to feedback telemetry data from the implantable medical device.

2. A signal processor according to claim 1, wherein the external processor uses an electromagnetic field induction link for transmitting.

3. A signal processor according to claim 1, wherein the external signal processor uses a high-frequency band radio frequency between 3 MHz and 30 MHz for transmitting.

4. A signal processor according to claim 1, wherein the implant data signal uses Manchester data encoding.

5. A signal processor according to claim 1, wherein the adjustable pulse width durations are selectable from a group of pre-determined pulse width durations.

6. A signal processor according to claim 1, wherein the implanted medical device is a cochlear implant device.

7. A method for communication with an implanted medical device, the method comprising:

transmitting to the implanted medical device an implant data signal having a sequence of HI and LOW logic states at a fixed data bit rate having adjustable pulse width durations in response to feedback telemetry data from the implantable medical device.

8. A method according to claim 7, wherein the transmitting uses an electromagnetic field induction link.

9. A method according to claim 7, wherein the transmitting is in a high-frequency band radio frequency between 3 MHz and 30 MHz.

10. A method according to claim 7, wherein the implant data signal uses Manchester data encoding.

11. A method according to claim 7, wherein the adjustable pulse width durations are selectable from a group of pre-determined pulse width durations.

12. A method according to claim 7, wherein the implanted medical device is a cochlear implant device.