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 a light transmissive member arranged proximate to the fluid channel; 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 a light emitter and a light sensor that are in electrical communication with control circuitry, wherein the light sensor receives light from the light emitter that is internally reflected by the light transmissive member in the cap.
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0 Petitions
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.
268 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 a light transmissive member arranged proximate to the fluid channel; 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 a light emitter and a light sensor that are in electrical communication with control circuitry, wherein the light sensor receives light from the light emitter that is internally reflected by the light transmissive member in the cap. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for detecting an occlusion in a flow path from an infusion pump system, comprising:
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activating a light emitter arranged in a controller housing of a controller device to direct light outside of the controller housing and into a light transmissive member of a cap component of a pump device that is removably attached to the controller housing to provide an electrical connection between the pump device and the controller device, wherein the cap component covers an opening to an internal space of the pump device after a medicine cartridge is received in the internal space; receiving signals from a light sensor arranged in the controller housing, the signals from the light sensor being generated in response to the light sensor receiving light from the light emitter that is internally reflected by the light transmissive member of the cap component of the pump device; and determining if an occlusion exists in a flow path based at least in part on the signals received from the light sensor. - View Dependent Claims (17, 18, 19, 20)
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Specification