Patent No. EP3727524 (titled "Liquid Delivery Cap Devices, Systems, And Methods") was filed by Patients Pending on Dec 18, 2018. The application was issued on Apr 23, 2025.
A liquid delivery system cap device that detects the plunger position of a liquid delivery device and outputs dosage information based on the detected position. The cap device includes a sensor carriage with one or more sensors that move to detect the plunger position, and a position sensor that tracks the carriage's movement. The device can automatically determine the liquid volume, previously delivered dose, and remaining doses, and can provide user feedback on device operation.

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