Medical device telemetry receiver having improved noise discrimination
US6201993A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1998 |
| Grant date | Mar 13, 2001 |
| Priority date | — |
| Expiry date | Dec 9, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S128/903
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for detecting an RF signal transmitted between an implantable medical device (IMD) and an external medical device programmer in a telemetry session and discriminating the telemetry transmitted RF signal from transient and steady state noise corrupting it. The external programmer includes a programmer telemetry antenna tuned circuit adapted to be driven into oscillation to generate tuned circuit output signals in response to telemetry uplink transmissions of telemetry uplink signals from the IMD, wherein the tuned circuit output signals can exhibit noise artifacts due to contamination by electrical noise. An RF telemetry receiver section detects and demodulates the telemetry uplink signals from the tuned circuit output signals and provides a demodulated uplink signal having a demodulated uplink signal amplitude that varies with time as a function of telemetry uplink signal amplitudes and noise artifacts. The receiver section includes an adaptive comparator circuit for comparing the demodulated uplink signal amplitude with an adaptive threshold signal and providing a receiver output signal when the demodulated uplink signal amplitude exceeds the adaptive thresh…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.