Implantable medical device telemetry with hop-on-error frequency hopping
First Claim
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1. A system, comprising:
- an implantable medical device including;
a therapy module; and
an implant telemetry module; and
an external system, including;
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 adapted to transmit over a 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 adapted to control a channel hopping process including detecting failure of a communication session on a first frequency, synchronously scanning a subset of available channels included in a synchronous scan list for a response from the implantable medical device when the failure is detected, resuming the communication session with the implantable medical device after receiving a response, on a second frequency on which the response was received, and asynchronously scanning available channels when no response is received during synchronous scanning.
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Abstract
A 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 upon detecting an interruption of communication, such that a scan is performed 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.
122 Citations
20 Claims
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1. A system, comprising:
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an implantable medical device including; a therapy module; and an implant telemetry module; and an external system, including; 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 adapted to transmit over a 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 adapted to control a channel hopping process including detecting failure of a communication session on a first frequency, synchronously scanning a subset of available channels included in a synchronous scan list for a response from the implantable medical device when the failure is detected, resuming the communication session with the implantable medical device after receiving a response, on a second frequency on which the response was received, and asynchronously scanning available channels when no response is received during synchronous scanning. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method, comprising:
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communicating wirelessly with an implantable medical device using a first frequency until failure of a communication session is detected on the first frequency; synchronously scanning a subset of available channels according to a synchronous scan list for a response from the implantable medical device when the failure is detected; resuming the communication session with the implantable medical device after receiving a response, on a second frequency on which the response was received; and asynchronously scanning available channels when no response is received during synchronous scanning. - View Dependent Claims (14, 15, 16, 17)
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18. A system, comprising:
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means for communicating wirelessly with an implantable medical device using a first frequency until failure of a communication session is detected on the first frequency; means for synchronously scanning a subset of available channels according to a synchronous scan list for a response from the implantable medical device when the failure is detected; means for resuming the communication session with the implantable medical device after receiving a response, on the frequency which the response was received; and means for asynchronously scanning available channels when no response is received during synchronous scanning. - View Dependent Claims (19, 20)
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Specification