Method and apparatus for determination of a criterion of activity of a rate modulation parameter sensor in an active implantable medical device
First Claim
1. A process for determining a criterion of activity of a sensor for measuring a parameter serving to control at least one function in an active implantable medical device, comprising the steps of:
- a) acquiring successive samples of a representative value of the parameter from a signal collected by the sensor;
b) calculating over a first interval of time a first average value (AVE-- SENSOR-- SHORT-- TERM) of the activity of the sensor from the samples acquired during said first time interval;
c) calculating over a second interval of time, the second time interval being greater than the first, a second average value (AVE-- SENSOR-- 24H) of the activity of the sensor from the samples acquired during said second time interval; and
d) determining a criterion of activity of the sensor based on a comparison of the first average value and the second average value.
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Accused Products
Abstract
The process of determining a criterion of activity of a sensor used to measure a parameter of enslavement in an active implantable medical device. The process is characterized by the following steps:
a) acquisition of successive samples of the representative value of the parameter from a signal collected by the sensor,
b) calculation over a first interval of time of a first average value (AVE-- SENSOR-- SHORT-- TERM) of the activity from the samples acquired by the sensor;
c) calculation over a second interval of time, greater than the first, of a second average value (AVE-- SENSOR-- 24H) of the activity of the sensor from acquired samples, and
d) determination of a criterion of activity of the sensor, by comparison of the first average value and the second average value, notably by giving to the criterion of activity a first value (Rest) defining a state of rest of the patient if the first average value (AVE-- SENSOR-- SHORT-- TERM) is less than the second average value (AVE-- SENSOR-- 24H), and a second value (Non-Rest) defining a state of non-rest of the patient in the opposite case.
170 Citations
27 Claims
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1. A process for determining a criterion of activity of a sensor for measuring a parameter serving to control at least one function in an active implantable medical device, comprising the steps of:
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a) acquiring successive samples of a representative value of the parameter from a signal collected by the sensor; b) calculating over a first interval of time a first average value (AVE-- SENSOR-- SHORT-- TERM) of the activity of the sensor from the samples acquired during said first time interval; c) calculating over a second interval of time, the second time interval being greater than the first, a second average value (AVE-- SENSOR-- 24H) of the activity of the sensor from the samples acquired during said second time interval; and d) determining a criterion of activity of the sensor based on a comparison of the first average value and the second average value. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. Apparatus for determining a criterion of activity of a sensor for measuring a parameter serving to control at least one function in an active implantable medical device, comprising:
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a sensor for measuring a device function control parameter; means, responsive to the sensor, for acquiring successive samples of a representative value of the measured parameter; first means for calculating a first average value of the activity of the sensor from the samples acquired during a first time interval; second means for calculating a second average value of the activity of the sensor from the samples acquired during a second time interval, the second time interval being greater than the first; and means for determining a criterion of activity of the sensor based on a comparison of the first average value and the second average value. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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Specification