OPTICAL METHODS FOR MEASURING DOSAGE IN A MEDICINE DELIVERY DEVICE

    公开(公告)号:WO2019036668A1

    公开(公告)日:2019-02-21

    申请号:PCT/US2018/046971

    申请日:2018-08-17

    Abstract: Disclosed herein are techniques for drug delivery measurement. A medicine delivery device includes a cartridge for storing a medicine, a needle assembly coupled to a bottom of the cartridge, a piston located in the cartridge for pushing the medicine to dispense the medicine from the cartridge through the needle assembly, and a sensor configured to measure a distance between the piston and the bottom of the cartridge. The sensor includes a triangulation-based distance measurement unit, a resonant frequency-based distance measurement unit, a time-of-flight-based distance measurement unit, or a frequency-modulated continuous-wave time-of-flight-based distance measurement unit.

    EXPIRATION DATE INDICATOR FOR HYPODERMIC NEEDLE DEVICES

    公开(公告)号:WO2019036664A1

    公开(公告)日:2019-02-21

    申请号:PCT/US2018/046966

    申请日:2018-08-17

    Abstract: Disclosed are hypodermic needle devices having an easily-observed, visual indication that the drug contents of the device have expired. The visual indication may be triggered when a counter maintained by a processor of the hypodermic needle device has exceeded a time threshold. The time threshold may be configured based on the drug threshold, and the counter and time threshold may be manually or dynamically adjusted as real-world conditions change to alter the time to expiration. For instance, a prolonged increase in temperature detected by the temperature sensor may speed up the expiration rate of the drug and require a reduction in the time threshold.

    TEMPERATURE THRESHOLDING IN DRUG DISPENSING DEVICES

    公开(公告)号:WO2019036620A1

    公开(公告)日:2019-02-21

    申请号:PCT/US2018/046912

    申请日:2018-08-17

    Abstract: Techniques are disclosed for providing a drug-dispensing device that tracks temperatures to which a drug stored therein is exposed, further providing means for indicating to a user that the drug has been exposed to temperatures outside a suitable temperature range and/or preventing the drug from being dispensed in such cases. According to some embodiments, an electrochromic element may be used to indicate the drug has been exposed to temperatures outside the suitable temperature range.

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