Implantable medical devices and systems having inductive telemetry and recharge on a single coil
US9136728B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2011 |
| Grant date | Sep 15, 2015 |
| Priority date | — |
| Expiry date | Dec 4, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2310/23
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Implantable devices and related systems utilize a single coil for both inductive telemetry at one telemetry signal frequency and recharge at another recharge energy frequency. The coil is included in a tank circuit that may have a variable reactance. During telemetry, particularly outside of a recharge period, the reactance may be set so that the tank circuit is tuned to the telemetry frequency. During recharge, the reactance is set so that the tank circuit is tuned to the recharge frequency. Furthermore, the tank circuit may have a Q that is sufficiently small that the tank circuit receives telemetry frequency signals that can be decoded by a receiver while the tank is tuned to the recharge frequency so that telemetry for recharge status purposes may be done during the recharge period without changing the tuning of the tank circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.