Telemetry duty cycle management system for an implantable medical device
First Claim
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1. A method comprising:
- configuring a first device to communicate wirelessly;
configuring a second device to communicate wirelessly, wherein either the first device or the second device includes an implantable medical device;
powering a first transmitter and a first receiver of the first device for a first time window;
repeatedly transmitting a digital key at each of a plurality of first wakeup intervals;
monitoring for a response using the first receiver;
powering a second receiver of the second device for a second time window;
while powering the second receiver, receiving the digital key at one of a plurality of second wakeup intervals;
powering a second transmitter of the second device;
transmitting the response using the second transmitter based on receiving the digital key;
establishing a communication session between the first device and the second device; and
returning the first transmitter, the first receiver, the first transmitter and the second receiver to a quiescent mode after the communication session.
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Abstract
A telemetry system enabling radio frequency (RF) communications between an implantable medical device and an external device, or programmer, in which the RF circuitry is normally maintained in a powered down state in order to conserve power. At synchronized wakeup intervals, one of the devices designated as a master device powers up its RF transmitter to request a communications session, and the other device designated as a slave device powers up its RF transmitter to listen for the request. Telemetry is conducted using a far field or near field communication link.
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Citations
40 Claims
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1. A method comprising:
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configuring a first device to communicate wirelessly; configuring a second device to communicate wirelessly, wherein either the first device or the second device includes an implantable medical device; powering a first transmitter and a first receiver of the first device for a first time window; repeatedly transmitting a digital key at each of a plurality of first wakeup intervals; monitoring for a response using the first receiver; powering a second receiver of the second device for a second time window; while powering the second receiver, receiving the digital key at one of a plurality of second wakeup intervals; powering a second transmitter of the second device; transmitting the response using the second transmitter based on receiving the digital key; establishing a communication session between the first device and the second device; and returning the first transmitter, the first receiver, the first transmitter and the second receiver to a quiescent mode after the communication session. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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26. A method comprising:
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powering a first transmitter and a first receiver of a first device for a first time window; repeatedly transmitting a digital key at each of a plurality of first wakeup intervals; repeatedly monitoring for a response using the first receiver, the response based on the digital key; and after repeatedly transmitting and repeatedly monitoring for a predetermined period of time, performing a non-synchronized receiver search. - View Dependent Claims (27)
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28. A method comprising:
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continuously powering a device circuit of an implantable medical device; continuously powering a near field communication link coupled to the device circuit; powering a far field receiver coupled to the device circuit according to a first duty cycle in which the far field receiver is periodically powered up at defined wakeup intervals; and transmitting an acknowledgment signal upon receiving a wireless command. - View Dependent Claims (29, 30, 31, 32, 33, 34, 35)
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36. A device comprising:
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a processor executing a program adapted to communicate data with an implantable medical device; a far field communication link coupled to the processor; and a duty cycle controller coupled to the far field communication link and adapted to operate the far field communication link in a manner compatible with a duty cycled implantable medical device, wherein the duty cycle controller periodically powers up the far field communication link at defined wakeup intervals which match wakeup intervals of the implantable medical device. - View Dependent Claims (37, 38)
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39. An implantable medical device comprising:
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a processor executing a program adapted to communicate data with an external programmer; a far field receiver coupled to the processor; a duty cycle controller coupled to the far field receiver and adapted to power and unpower the far field receiver according to a first duty cycle in which the far field receiver is periodically powered up at defined wakeup intervals; and
,a near field link coupled to the processor. - View Dependent Claims (40)
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Specification