Implantable medical device telemetry with periodic frequency hopping
AssigneeCardiac Pacemakers, Inc.
InventorsJoseph E. Bange, Vineel Vallapureddy
Life of this patent
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Abstract
A far-field radio-frequency (RF) telemetry system for data transmission between an implantable medical device and an external system includes a plurality of channels each representing a frequency band within a predetermined frequency range. The data transmission is performed using at least one active channel at any instant. Channel hopping is performed on a periodic basis throughout a telemetry session such that the active channel keeps scanning through an array of channels selected from the plurality of channels. If a data frame is not successfully transmitted, it is repeatedly re-transmitted using the current and/or the next active channels until its transmission becomes successful.
Claims20
A cardiac rhythm management (CRM) system, comprising:
- an implantable medical device including:
- a CRM module;
- and
- an implant telemetry module;
- and
- an external system;
- a programming module;
- and
- an external telemetry module,
- wherein the implant telemetry module and the external telemetry module each include a telemetry circuit including:
- an antenna;
- a transceiver coupled to the antenna, the transceiver including plurality of channels each representing a predetermined frequency band for data transmission between the implantable medical device and the external system;
- and
- a telemetry controller coupled to the transceiver, the telemetry controller configured to control a channel hopping including selecting an active channel from the plurality of channels on an approximately periodic basis, to control the data transmission using the active channel during a synchronous scan mode during which the channel hopping in the external system and the channel hopping in the implantable medical device are controlled to be synchronous, to start an asynchronous scan mode in response to an interruption of the data transmission resulting from using a plurality of active channels of the plurality of channels to transmit a data frame without success during the synchronous scan mode, and to restore the synchronization of the channel hopping in the external system and the channel hopping in the implantable medical device during the asynchronous scan mode.
Dependencies are inferred from the claim text.