Occlusion sensing for an infusion pump
First Claim
1. An infusion pump system for dispensing medicine, comprising:
- a pump device including a drive system to dispense a medicine from the pump device and a cap having a fluid channel through which the medicine is dispensed, the cap having means for internal reflection of light emitted generally toward the fluid channel of the cap; and
a removable controller device including control circuitry to communicate with the drive system of the pump device when the pump device is removably attached to the controller device, the removable controller device including means for emitting light and means for sensing light that are in electrical communication with control circuitry, wherein the means for sensing light receives light from means for emitting light that is internally reflected by the means for internal reflection in the cap.
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Accused Products
Abstract
Some embodiments of an infusion pump system may include an occlusion sensor that can be used to detect when an occlusion exists in the fluid path between the medicine reservoir and the infusion site on the user'"'"'s skin. Such an occlusion may occur, for example, when the fluid flow line (e.g., a cannula, infusion set tubing, or the like) is kinked. If the medicine dispensation path to the user is occluded, the user may receive no dosage or a lower dosage of the medicine. As such, the occlusion sensor can be used to indicate when the fluid is flowing or not flowing, thereby permitting the infusion pump system to communicate an alarm to the user if an occlusion exists.
259 Citations
20 Claims
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1. An infusion pump system for dispensing medicine, comprising:
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a pump device including a drive system to dispense a medicine from the pump device and a cap having a fluid channel through which the medicine is dispensed, the cap having means for internal reflection of light emitted generally toward the fluid channel of the cap; and a removable controller device including control circuitry to communicate with the drive system of the pump device when the pump device is removably attached to the controller device, the removable controller device including means for emitting light and means for sensing light that are in electrical communication with control circuitry, wherein the means for sensing light receives light from means for emitting light that is internally reflected by the means for internal reflection in the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An occlusion sensor system for an infusion pump system including a reusable controller device that is removably attachable to a disposable single-use pump device housing a medicine reservoir therein, the occlusion sensor system comprising:
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means for emitting light and means for sensing light arranged in the reusable controller device, the means for emitting light and the means for sensing light being in electrical communication with control circuitry of the reusable controller device; means for internal reflection arranged in the disposable single-use pump device, the means for internal reflection being aligned with the means for emitting light and the means for sensing light when the reusable controller device is removably attached to a disposable single-use pump device; and a flexible layer arranged in the disposable single-use pump device, the flexible layer being spaced apart from the means for internal reflection by a cavity when in a first operative position, wherein the means for sensing light receives light from the means for emitting light that is internally reflected by the means for internal reflection. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification