POSTURE STATE CLASSIFICATION FOR A MEDICAL DEVICE
First Claim
1. A method of classifying a posture state of a patient, comprising:
- obtaining a defined vector from at least one sensor disposed in a substantially fixed manner relative to the patient, the defined vector being described in a coordinate system of the at least one sensor and without regard to an orientation in which the sensor is disposed in relation to the patient;
obtaining a detected vector from the at least one sensor, the detected vector being described using the coordinate system of the at least one sensor and being indicative of the posture state of the patient;
comparing the detected vector and the defined vector;
classifying the posture state of the patient based on the comparison and without regard to the orientation in which the sensor is disposed in relation to the patient; and
initiating via a medical device an action related to providing care for the patient, the action being based on the posture state classification.
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Accused Products
Abstract
Techniques for posture classification of a patient in a coordinate system of a sensor. According to one aspect, a defined vector is obtained from a sensor disposed in a substantially fixed manner relative to the patient. The defined vector is described in a coordinate system of the sensor and without regard to an orientation in which the sensor is disposed in relation to the patient. A detected vector is obtained from the sensor that is described using the coordinate system of the sensor. The detected vector and the defined vector to are used to classify the posture state of the patient without regard to the orientation in which the sensor is disposed in relation to the patient. A response may be initiated by a medical device, which may include adjusting therapy delivery.
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Citations
45 Claims
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1. A method of classifying a posture state of a patient, comprising:
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obtaining a defined vector from at least one sensor disposed in a substantially fixed manner relative to the patient, the defined vector being described in a coordinate system of the at least one sensor and without regard to an orientation in which the sensor is disposed in relation to the patient; obtaining a detected vector from the at least one sensor, the detected vector being described using the coordinate system of the at least one sensor and being indicative of the posture state of the patient; comparing the detected vector and the defined vector; classifying the posture state of the patient based on the comparison and without regard to the orientation in which the sensor is disposed in relation to the patient; and initiating via a medical device an action related to providing care for the patient, the action being based on the posture state classification. - 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)
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25. An implantable medical device to determine a posture state of a patient, comprising:
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a sensor substantially fixed to a patient without regard to sensor orientation; a storage device to store at least one posture state definition referencing at least one defined vector expressed in a coordinate system of the sensor; and a processor to obtain from the sensor a detected vector in the coordinate system of the sensor, to compare the detected vector to the at least one defined vector and to classify a posture state of the patient based on the comparison and without regard to sensor orientation. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A method, comprising:
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receiving a defined vector from at least one sensor carried in any orientation within a patient, the defined vector being expressed in a coordinate system of the at least one sensor and without regard to the coordinate system of the patient; defining a posture state in reference to the defined vector; obtaining a detected vector from the at least one sensor communicatively coupled to an implantable medical device, the detected vector being expressed in the coordinate system of the at least one sensor and without regard to the coordinate system of the patient; classifying the posture state of the patient based on a comparison between the detected vector and the defined vector; and delivering therapy to the patient via the implantable medical device based on the posture state classification. - View Dependent Claims (39, 40, 41, 42, 43, 44)
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45. A storage medium storing executable instructions to cause a processor to perform the method, comprising:
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obtaining a detected vector that is derived from signals of a sensor that is carried in any orientation relative to a patient, the detected vector being indicated in a coordinate system of the sensor; obtaining one or more posture state definitions that reference one or more defined vectors, each defined vector being indicated in the coordinate system of the sensor; comparing the detected vector directly to the one or more defined vectors; and based on the comparison, classifying a posture state of the patient.
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Specification