Fluid injection devices and related methods
First Claim
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1. A method of operating an injection pen to deliver insulin to a patient, the method comprising:
- receiving user input indicative of a desire to administer a bolus using the injection pen;
receiving, at the injection pen via a wireless network, one or more interstitial fluid glucose measurement values from an interstitial sensing arrangement including one or more interstitial sensing elements;
obtaining, at the injection pen, a blood glucose measurement value measured by a blood glucose meter;
adjusting, at the injection pen, the blood glucose measurement value most recently measured by the blood glucose meter based at least in part on the one or more interstitial fluid glucose measurement values from the interstitial sensing arrangement to obtain an adjusted blood glucose measurement value corresponding to a time for the bolus to be delivered in response to receiving the user input indicative of the desire to administer the bolus;
recursively determining, at the injection pen, an active amount of the insulin in a body of the patient at the time for the bolus to be delivered based at least in part on historical bolus data associated with previous boluses delivered to the patient using the injection pen and an insulin action speed associated with the patient, wherein the insulin action speed represents an amount of time required to clear a unit of insulin from the body of the patient;
after receiving the user input, determining, by the injection pen, a bolus delivery amount of the insulin based at least in part on the active amount of the insulin and a difference between the adjusted blood glucose measurement value and a target glucose value;
configuring, by the injection pen, an actuation arrangement of the injection pen to automatically deliver the bolus delivery amount in response to actuation of a user interface element of the injection pen.
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Abstract
Fluid injection devices and related systems and operating methods are provided. An exemplary injection device includes an actuation arrangement to facilitate delivering fluid from a container, a user interface element coupled to the actuation arrangement, a data storage element to maintain one or more patient-specific parameter values and historical bolus data, and a control module coupled to the actuation arrangement and the data storage element. The control module of the injection device determines a bolus amount of the fluid to be delivered based at least in part on the one or more patient-specific parameter values and the historical bolus data in response to receiving a user input indicative of a desire to administer a bolus, and the control module configures the actuation arrangement to automatically deliver the bolus amount in response to manual actuation of the user interface element.
233 Citations
9 Claims
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1. A method of operating an injection pen to deliver insulin to a patient, the method comprising:
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receiving user input indicative of a desire to administer a bolus using the injection pen; receiving, at the injection pen via a wireless network, one or more interstitial fluid glucose measurement values from an interstitial sensing arrangement including one or more interstitial sensing elements; obtaining, at the injection pen, a blood glucose measurement value measured by a blood glucose meter; adjusting, at the injection pen, the blood glucose measurement value most recently measured by the blood glucose meter based at least in part on the one or more interstitial fluid glucose measurement values from the interstitial sensing arrangement to obtain an adjusted blood glucose measurement value corresponding to a time for the bolus to be delivered in response to receiving the user input indicative of the desire to administer the bolus; recursively determining, at the injection pen, an active amount of the insulin in a body of the patient at the time for the bolus to be delivered based at least in part on historical bolus data associated with previous boluses delivered to the patient using the injection pen and an insulin action speed associated with the patient, wherein the insulin action speed represents an amount of time required to clear a unit of insulin from the body of the patient; after receiving the user input, determining, by the injection pen, a bolus delivery amount of the insulin based at least in part on the active amount of the insulin and a difference between the adjusted blood glucose measurement value and a target glucose value; configuring, by the injection pen, an actuation arrangement of the injection pen to automatically deliver the bolus delivery amount in response to actuation of a user interface element of the injection pen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification
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Current AssigneeMedtronic Minimed Incorporated (Medtronic Plc)
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Original AssigneeMedtronic Minimed Incorporated (Medtronic Plc)
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InventorsRoy, Anirban
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Primary Examiner(s)Osinski, Bradley J
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Application NumberUS14/670,124Publication NumberTime in Patent Office1,671 DaysField of SearchUS Class CurrentCPC Class CodesA61M 5/1723 using feedback of body para...A61M 5/20 Automatic syringes, e.g. wi...A61M 5/24 Ampoule syringes, i.e. syri...A61M 5/31546 Electrically operated dose ...G16H 20/17 delivered via infusion or i...
