Automatically Operating Injection Device and Method for Determining An Injection Occlusion
First Claim
1. An injection device for automatically injecting a medicament into a human, the injection device comprising an injection unit, a measurement unit, a first memory, a second memory, a switching unit, an evaluation unit, and an occlusion alarm unit, wherein:
- the injection unit is coupleable to the human to deliver automatically a plurality of injections of the medicament into the human, wherein the plurality of injections are each delivered according to an injection time period;
the measurement unit is mechanically coupled to the injection unit and measures an injection force, at the injection time period, for each of the plurality of injections;
the first memory is electrically coupled to the measurement unit and stores a value of the injection force for each of the plurality of injections measured by the measurement unit, thereby forming a series of force measurements;
the switching unit is electrically coupled to the first memory and the second memory such that the switching unit reads the series of force measurements from the first memory, generates a plurality of evaluation forces based on an evaluation time period, and writes the plurality of evaluation forces to the second memory;
the evaluation unit is electrically coupled to the second memory and determines whether to provide an occlusion alarm signal either based on an evaluation of the plurality of evaluation forces or if one or more of the series of force measurements exceeds a force threshold; and
the occlusion alarm unit which receives the occlusion alarm signal such that the occlusion alarm unit provides an injection occlusion alarm based on the occlusion alarm signal.
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Accused Products
Abstract
An automatically operating injection device with an occlusion alarm unit and a method for determining an injection occlusion are disclosed. The method includes generating a plurality of evaluation forces based on a series of force measurements and based on an evaluation time period; determining whether an occlusion exists based on either an evaluation of the plurality of evaluation forces or whether one or more of the series of force measurements exceeds a force threshold; and providing an injection occlusion alarm if an occlusion is determined to exist.
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Citations
20 Claims
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1. An injection device for automatically injecting a medicament into a human, the injection device comprising an injection unit, a measurement unit, a first memory, a second memory, a switching unit, an evaluation unit, and an occlusion alarm unit, wherein:
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the injection unit is coupleable to the human to deliver automatically a plurality of injections of the medicament into the human, wherein the plurality of injections are each delivered according to an injection time period; the measurement unit is mechanically coupled to the injection unit and measures an injection force, at the injection time period, for each of the plurality of injections; the first memory is electrically coupled to the measurement unit and stores a value of the injection force for each of the plurality of injections measured by the measurement unit, thereby forming a series of force measurements; the switching unit is electrically coupled to the first memory and the second memory such that the switching unit reads the series of force measurements from the first memory, generates a plurality of evaluation forces based on an evaluation time period, and writes the plurality of evaluation forces to the second memory; the evaluation unit is electrically coupled to the second memory and determines whether to provide an occlusion alarm signal either based on an evaluation of the plurality of evaluation forces or if one or more of the series of force measurements exceeds a force threshold; and the occlusion alarm unit which receives the occlusion alarm signal such that the occlusion alarm unit provides an injection occlusion alarm based on the occlusion alarm signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for detecting an injection occlusion in an injection device for automatically injecting a medicament into a human, the method comprising:
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measuring an injection force, at an injection time period, for each of a plurality of injections automatically delivered by the injection device into the human, thereby forming a series of force measurements, wherein the plurality of injections are each delivered according to the injection time period; generating a plurality of evaluation forces based on the series of force measurements and based on an evaluation time period; determining whether an occlusion exists based on either an evaluation of the plurality of evaluation forces or whether one or more of the series of force measurements exceeds a force threshold; and providing an injection occlusion alarm if an occlusion is determined to exist. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer-readable medium having computer-executable instructions for performing a method for detecting an injection occlusion in an injection device for automatically injecting a medicament into a human, the method comprising:
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measuring an injection force, at an injection time period, for each of a plurality of injections automatically delivered by the injection device into the human, thereby forming a series of force measurements, wherein the plurality of injections are each delivered according to the injection time period; generating a plurality of evaluation forces based on the series of force measurements and based on an evaluation time period; determining whether an occlusion exists based on either an evaluation of the plurality of evaluation forces or whether one or more of the series of force measurements exceeds a force threshold; and providing an injection occlusion alarm if an occlusion is determined to exist.
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Specification