SYSTEM AND METHOD FOR WAKING AN IMPLANTABLE MEDICAL DEVICE FROM A SLEEP STATE
First Claim
1. A method carried out by a satellite implantable medical device for being awakened from a sleep state by a primary implantable medical device, the satellite implantable medical device including a wake-up sensor, a control module, a physiologic sensor, and a communication module, the method comprising:
- waiting in a sleep state;
detecting, by the wake-up sensor, the presence of a wake-up field generated by the primary implantable medical device; and
responsive to the presence of the wake-up field, causing the control module to change from the sleep state to an active state and cause the communications module to transmit a measurement of at least one physiologic parameter to the primary implantable medical device, the at least one physiologic parameter being measured by the physiologic sensor.
1 Assignment
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Accused Products
Abstract
A system and method for waking up an implantable medical device (“IMD”) from a sleep state in which power consumption by the IMD is essentially zero. The IMD may be adapted to perform one or more designated measurement and/or therapeutic functions. In one embodiment, the IMD includes a wake-up sensor that is adapted to sense the presence or absence of a wake-up field generated by another IMD or an external device. The wake-up field may, in some embodiments, be an electromagnetic field, a magnetic field, or a physiologically sub-threshold excitation current (i.e., E-field). Upon sensing by the wake-up sensor of the wake-up field, other components of the IMD, which may include a controller, a sensing and/or therapy module, and/or a communications module, are awakened to perform one or more designated functions.
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Citations
23 Claims
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1. A method carried out by a satellite implantable medical device for being awakened from a sleep state by a primary implantable medical device, the satellite implantable medical device including a wake-up sensor, a control module, a physiologic sensor, and a communication module, the method comprising:
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waiting in a sleep state;
detecting, by the wake-up sensor, the presence of a wake-up field generated by the primary implantable medical device; and
responsive to the presence of the wake-up field, causing the control module to change from the sleep state to an active state and cause the communications module to transmit a measurement of at least one physiologic parameter to the primary implantable medical device, the at least one physiologic parameter being measured by the physiologic sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of waking an implantable medical device from a low-power state, the method comprising:
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providing a first implanted medical device including a wake-up field generator and a first communication module;
providing a second implanted medical device including a battery, a wake-up sensor operable to detect the wake-up field, a physiologic sensor, a control module, and a second communication module, wherein the second implanted device is initially in a low-power state;
detecting a presence of the wake-up field; and
responsive to the presence of the wake-up field, causing the control module to change from the low-power state to an active state and cause a measurement of at least one physiological parameter to be transmitted to the first implanted device via the second communication module. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A system for waking up an implantable medical device from a sleep state, the system comprising:
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a primary implantable device including a wake-up field generator operable to generate a wake-up field, and a first communication module; and
a satellite implantable device including;
a control module;
a second communication module, wherein the control module and the second communication module are adapted to change between a sleep state and an active state; and
means for detecting the wake-up field. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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Specification