Data modification for predictive operations and devices incorporating same
First Claim
1. A system comprising:
- a sensing arrangement to obtain a sequence of measurements of a condition in a body of a user, the sensing arrangement including a sensing element providing a signal indicative of the condition; and
a control module coupled to the sensing arrangement, the sensing arrangement and the control module being cooperatively configured to identify one or more unusable measurements in the sequence of measurements, modify a value for the one or more unusable measurements in the sequence of measurements, resulting in a modified sequence of measurements, determine an estimate of a trend in the sequence of measurements based at least in part on differences between consecutive measurements of the modified sequence of measurements, and determine a predicted value for the condition in the body of the user at a time in the future based at least in part on a current value for the condition and the estimate of the trend, wherein;
the one or more unusable measurements are replaced in the modified sequence with an interpolated value based on a preceding usable measurement in the sequence and a succeeding usable measurement in the sequence when a number of measurement samples corresponding to a gap between the preceding usable measurement and the succeeding usable measurement is less than an interpolation threshold;
the one or more unusable measurements are backfilled with the succeeding usable measurement when the number of measurement samples corresponding to the gap is greater than the interpolation threshold; and
the control module is configured to operate a medical device in a manner that is influenced by the predicted value.
1 Assignment
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Accused Products
Abstract
Infusion systems, infusion devices, and related operating methods are provided. An exemplary method of operating an infusion device capable of delivering fluid to a user involves obtaining a sequence of measurements indicative of a condition of the user that is influenced by the fluid and modifying one or more unusable measurements in the sequence using one or more other usable measurements in the sequence to obtain a modified sequence of measurements. The method continues by determining a predicted value for the condition of the user at a time in the future based at least in part on the modified sequence of measurements and operating the infusion device in a manner that is influenced by the predicted value.
246 Citations
20 Claims
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1. A system comprising:
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a sensing arrangement to obtain a sequence of measurements of a condition in a body of a user, the sensing arrangement including a sensing element providing a signal indicative of the condition; and a control module coupled to the sensing arrangement, the sensing arrangement and the control module being cooperatively configured to identify one or more unusable measurements in the sequence of measurements, modify a value for the one or more unusable measurements in the sequence of measurements, resulting in a modified sequence of measurements, determine an estimate of a trend in the sequence of measurements based at least in part on differences between consecutive measurements of the modified sequence of measurements, and determine a predicted value for the condition in the body of the user at a time in the future based at least in part on a current value for the condition and the estimate of the trend, wherein; the one or more unusable measurements are replaced in the modified sequence with an interpolated value based on a preceding usable measurement in the sequence and a succeeding usable measurement in the sequence when a number of measurement samples corresponding to a gap between the preceding usable measurement and the succeeding usable measurement is less than an interpolation threshold; the one or more unusable measurements are backfilled with the succeeding usable measurement when the number of measurement samples corresponding to the gap is greater than the interpolation threshold; and the control module is configured to operate a medical device in a manner that is influenced by the predicted value. - View Dependent Claims (2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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7. An infusion system comprising:
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a sensing arrangement to obtain a sequence of measurements of a condition in a body of a user, identify one or more unusable measurements in the sequence of measurements, modify a value for the one or more unusable measurements in the sequence to obtain a modified sequence of measurements, determine an estimate of a trend in the sequence of measurements based at least in part on differences between consecutive measurements of the modified sequence of measurements, determine a predicted value for the condition in the body of the user at a time in the future based at least in part on the estimate of the trend and a current measurement of the condition, and transmit the predicted value and the current measurement of the condition, wherein; the sensing arrangement includes a sensing element providing a signal indicative of the condition; the one or more unusable measurements are replaced in the modified sequence with an interpolated value based on a preceding usable measurement in the sequence and a succeeding usable measurement in the sequence when a number of measurement samples corresponding to a gap between the preceding usable measurement and the succeeding usable measurement is less than an interpolation threshold; and the one or more unusable measurements are backfilled with the succeeding usable measurement when the number of measurement samples corresponding to the gap is greater than the interpolation threshold; and an infusion device to receive the predicted value and the current measurement, the infusion device including; a motor operable to deliver fluid to the body of the user; and a control module coupled to the motor to operate the motor based at least in part on the current measurement in a manner that is influenced by the predicted value. - View Dependent Claims (20)
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Specification