Telemetry duty cycle management system for an implantable medical device
AssigneeCardiac Pacemakers, Inc.
InventorsJeffrey A. Von Arx, Ron Balczewski, Scott T. Mazar, William J. Linder, William R. Mass
Life of this patent
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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.
Claims46
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.
A method comprising:
- 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.
A method comprising:
- 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;
- and
- transmitting an acknowledgment signal upon receiving a wireless command.
A device comprising:
- 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.
An implantable medical device comprising:
- a processor executing a program adapted to communicate data with an external programmer;
- a far field receiver coupled to the processor;
- and
- 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.
Dependencies are inferred from the claim text.