Implantable medical device with sensor self-test feature
First Claim
1. An implantable medical device comprising:
- a sensing device that generates a sensor signal indicative of a physiological condition; and
self-test circuitry that performs a self-test of the sensing device in response to an event associated with an operational adjustment of the implantable medical device.
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Accused Products
Abstract
An implantable medical device (IMD) applies a sensor self-test when a sensing device generates a sensor signal indicating an event, or when the sensor is used to validate an event detected by another device. The event may be based on a sensed condition that triggers an operational adjustment, such as a therapy or diagnostic adjustment within the IMD. A sensor self-test verifies that an implantable sensing device is functional, and can be performed with or without activating the sensor. Activating the sensor may involve, application of an electrical input signal that causes the sensor to generate an output signal. Alternatively, the sensor self-test may be performed without activating the sensor by analyzing the continuity of a signal path between the sensor and sensor interface circuitry. In either case, a sensor self-test verifies proper operation so that operational adjustments can be made with greater confidence.
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Citations
46 Claims
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1. An implantable medical device comprising:
a sensing device that generates a sensor signal indicative of a physiological condition; and
self-test circuitry that performs a self-test of the sensing device in response to an event associated with an operational adjustment of the implantable medical device.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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obtaining a sensor signal indicative of a physiological condition from a sensing device; and performs a self-test of the sensing device in response to an event associated with an operational adjustment of an implantable medical device. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. An implantable medical device comprising:
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means for obtaining a sensor signal indicative of a physiological condition from a sensing device; and means for performing a self-test of the sensing device in response to an event associated with an operational adjustment of an implantable medical device.
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34. A method comprising:
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detecting an event associated with an operational adjustment of an implantable medical device; obtaining a sensor signal indicative of a physiological condition from a sensing device; performing a self-test of the sensing device in response to the event; and determining whether to make the operational adjustment based on the sensor signal and a result of the self-test. - View Dependent Claims (35, 36, 37, 38, 39)
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40. An implantable medical device comprising:
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a sensing device that generates a sensor signal indicative of a physiological condition; and a therapy delivery device that detects an event associated with an operational adjustment of an implantable medical device, wherein the sensing device performs a self-test of the sensing device in response to the event, and the therapy delivery device determines whether to make the operational adjustment based on the sensor signal and a result of the self-test. - View Dependent Claims (41, 42, 43, 44, 45)
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46. An implantable medical device comprising:
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means for detecting an event associated with an operational adjustment of an implantable medical device; means for obtaining a sensor signal indicative of a physiological condition from a sensing device; means for performing a self-test of the sensing device in response to the event; and means for determining whether to make the operational adjustment based on the sensor signal and a result of the self-test.
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Specification