Multi-stage delivery system
    41.
    发明授权

    公开(公告)号:US10751478B2

    公开(公告)日:2020-08-25

    申请号:US15724541

    申请日:2017-10-04

    Inventor: David Nazzaro

    Abstract: A multi-stage drug delivery system having a cartridge and multiple plungers positioned in the cartridge and spaced apart from one another is provided. A first plunger, a second plunger, and the cartridge form a first chamber storing a first drug. The second plunger and the cartridge form a second chamber storing a second drug. A cannula pierces the first plunger to access the first drug. As the first plunger is driven toward the second plunger, the first drug is expelled from the first chamber for delivery to a patient through the cannula. After expelling the first liquid drug, the cannula can pierce the second plunger to access the second drug. As the first and second plungers are together driven toward a closed end of the cartridge, the second liquid drug is expelled from the second chamber for delivery to the patient through the cannula.

    Drug delivery device with indicator

    公开(公告)号:US10561797B2

    公开(公告)日:2020-02-18

    申请号:US15676604

    申请日:2017-08-14

    Abstract: Systems and methods for monitoring an operational state and/or a fill status of a drug container of a drug delivery device are provided. The drug container can hold a liquid drug. A plunger can be positioned within the drug container. A drive system can advance the plunger to expel the liquid drug from the container. A monitoring system can detect a movement and/or a position of the plunger and/or any component coupled to the plunger. The detection can enable determination of an amount of liquid drug that has been expelled and/or an amount of liquid drug remaining in the drug container. Dosing rates, flow rates, and dosage completion can also be determined.

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