SYSTEM AND METHOD FOR PROVIDING CLOSED LOOP INFUSION FORMULATION DELIVERY
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Abstract
A system and method for providing closed loop infusion formulation delivery which accurately calculates a delivery amount based on a sensed biological state by adjusting an algorithm'"'"'s programmable control parameters. The algorithm calculates a delivery amount having proportional, derivative, and basal rate components. The control parameters may be adjusted in real time to compensate for changes in a sensed biological state that may result from daily events. Safety limits on the delivery amount may be included in the algorithm. The algorithm may be executed by a computing element within a process controller for controlling closed loop infusion formulation delivery. The biological state is sensed by a sensing device which provides a signal to the controller. The controller calculates an infusion formulation delivery amount based on the signal and sends commands to an infusion formulation delivery device which delivers an amount of infusion formulation determined by the commands.
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Citations
71 Claims
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1-51. -51. (canceled)
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52. A method for delivering an insulin formulation, the method comprising:
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taking a plurality of samples of a blood glucose level over a period of time; filtering out high frequency components of the sampled blood glucose level; comparing the filtered sampled blood glucose level to a predefined blood glucose level threshold; and disabling insulin formulation delivery if the sampled blood glucose level is less than the predefined blood glucose level threshold. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60)
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61. A method for delivering an insulin formulation, the method comprising:
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detecting a biological state a plurality of times over a period of time; wherein the detected biological state comprises sleeping, being awake, temperature, exercising, or blood oxygen level; and adjusting an insulin formulation delivery based on the detected biological state.
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62. A system for delivering an insulin formulation comprising:
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a data acquisition unit for taking a plurality of samples of a blood glucose level over a period of time; a filter for filtering out high frequency components of the sampled blood glucose level; a comparator for comparing the filtered sampled blood glucose level to a predefined blood glucose level threshold; and a controller for disabling insulin formulation delivery if the sampled blood glucose level crosses the predefined blood glucose level threshold. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71)
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Specification