Sensing a status of an infuser based on sensing motor control and power input

    公开(公告)号:US10398837B2

    公开(公告)日:2019-09-03

    申请号:US15855340

    申请日:2017-12-27

    Abstract: A status of a battery operated infuser may be detected by measuring a controlled input parameter. The measurement may be used to determine a magnitude of the input parameter and a parameter of the control. For example, control of power input to a motor may be by pulse density modulation. An integral of current over time may serve as a measure of current magnitude and pulse density. The result of the integral may be used to determine the status of the injector. The status may include normal functions for example start of pumping and/or malfunctions such as occlusion or drive disengagement.

    Flexibly mounted cartridge alignment collar for drug delivery device

    公开(公告)号:US10251813B2

    公开(公告)日:2019-04-09

    申请号:US14638713

    申请日:2015-03-04

    Abstract: An alignment assembly for a cartridge interface of a drug delivery device is disclosed. The assembly optionally includes a coupling for opening fluid communication between the cartridge and the delivery device. For example, the coupling optionally includes a cannula insertable through a septum of the cartridge. The assembly may include a guide for positioning the cartridge and/or an access channel thereof within a first precision of a loaded position. The assembly optionally includes a cartridge engagement fitting (for example a gripping expander sleeve collar) attached to the coupling. Optionally when the cartridge is engaged to the fitting, the coupling is retained in connection with the access channel to within a second precision. The second precision is optionally higher than the first precision. In some embodiments one or more compliant supports movably retain the fitting oriented to engage the cartridge when the access channel is in the loaded position.

    Door and doorstop for portable one use drug delivery apparatus

    公开(公告)号:US10173009B2

    公开(公告)日:2019-01-08

    申请号:US15196775

    申请日:2016-06-29

    Abstract: An aspect of some embodiments of the current application is a doorstop to a drug delivery apparatus that encourages a user of the apparatus to perform the proper usage steps in the proper order. For example, a user may be expected to receive an injector in a transport state, open it to an open state, insert a cartridge, and/or close the cartridge before operation. The doorstop may have an obstructing mode, optionally preventing closing of the door. The cartridge may optionally have a non-obstructing mode allowing closing of the door. Inserting the cartridge may optionally cause a doorstop to move from the obstructing mode to the non-obstructing mode. In the non-obstructing mode the doorstop may optionally prevent removal of the cartridge.

    Linear rotation stabilizer for a telescoping syringe stopper driverdriving assembly

    公开(公告)号:US10149943B2

    公开(公告)日:2018-12-11

    申请号:US14725009

    申请日:2015-05-29

    Abstract: A cartridge interface assembly drives a stopper in a drug reservoir or a drug delivery device. An anti-rotational guide optionally moves along an axis of a cavity of the reservoir. The anti-rotational guide is optionally slidably anti-rotationally coupled to a housing of the drug delivery device. A telescoping plunger driver may include a proximal shaft and distal shaft that telescope by relative rotation. The distal shaft is optionally slidably anti-rotationally coupled to the anti-rotational guide. The shafts are optionally oriented along said axis. In some embodiments, rotating the proximal shaft with respect to the anti-rotational guide moves the guide along said axis with respect to the housing and moves the distal shaft along the axis with respect to the anti-rotational guide.

    Injector device
    9.
    外观设计

    公开(公告)号:USD817481S1

    公开(公告)日:2018-05-08

    申请号:US29605061

    申请日:2017-05-23

    CPC classification number: A61M5/158 A61M5/14248 A61M2005/14252 A61M2205/13

    Abstract: A variable flexibility adhesive system may adhere a surface of a medical infusion device to the skin of a user. The system may be configured to hold a location on the surface stationary with respect to a site on the user's skin. The system may include an adhesive substrate for adhering to the user and an interface where the substrate is held to the surface of the device. The interface may totally and/or partially surround the stationary location. A skirt of the substrate may totally and/or partially surround the interface. Parts of the skirt may be stiffened. Optional features may include tabs for activation of the adhesive and/or a location for peeling the infuser to away from the skin. Additionally or alternatively, the interface may have variable flexibility. Additionally or alternatively, the stiffener may include a plastic layer.

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