Detecting posture sensor signal shift or drift in medical devices
First Claim
1. A method comprising:
- receiving posture sensor data from a posture sensor;
determining a posture state of a patient based on the posture sensor data;
controlling delivery of therapy to the patient according to the determined posture state;
comparing the posture sensor data from the posture sensor to reference posture sensor data; and
detecting the presence of at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison,andwherein at least one of the receiving, the determining, the comparing, and the detecting is performed via one or more processors.
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Abstract
In general, the disclosure relates to medical devices and systems for detecting the posture state of patient. For example, a medical system may detect a posture state of a patient and deliver therapy based at least in part on the detected patient posture state. In some examples, the system may comprise a posture sensor that generates posture sensor data when a patient is in a posture state, and a processor that receives the first posture sensor data, compares the first posture state data to reference posture sensor data, and detects the presence of at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison. In some examples, the processor may be configured to determine one or more offset correction values to apply to posture sensor data generated by the posture sensor when the at least one of sensor signal drift or sensor signal shift is determined to be present.
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Citations
34 Claims
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1. A method comprising:
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receiving posture sensor data from a posture sensor; determining a posture state of a patient based on the posture sensor data; controlling delivery of therapy to the patient according to the determined posture state; comparing the posture sensor data from the posture sensor to reference posture sensor data; and detecting the presence of at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison, and wherein at least one of the receiving, the determining, the comparing, and the detecting is performed via one or more processors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A medical device comprising:
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a posture sensor configured to generate posture sensor data; and at least one processor configured to receive the posture sensor data, determine a posture state of a patient based on the posture sensor data, control the delivery of therapy to a patient according to the determined posture state, compare the posture sensor data to reference posture sensor data, and detect at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A non-transitory computer-readable storage medium comprising instructions for causing one or more processors to:
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receive posture sensor data from a posture sensor; determine a posture state of a patient based on the posture sensor data control delivery of therapy to the patient according to the determined posture state compare the posture sensor data from the posture sensor to reference posture sensor data; and detect the presence of at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison.
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34. A system comprising:
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means for receiving posture sensor data from a posture sensor; means for determining a posture state of a patient based on the posture sensor data; means for controlling delivery of therapy to the patient according to the determined posture state; means for comparing the posture sensor data from the posture sensor to reference posture sensor data; and means for detecting the presence of at least one of sensor signal drift or sensor signal shift for the posture sensor based at least in part on the comparison.
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Specification