Abstract:
A method of securing an assembly of a drug delivery system, comprising: configuring at least a first component and a second component of the assembly in a closed configuration ready for placement into the drug delivery system; installing an assembly key including a locking element on the assembly to secure the assembly in said configuration; and, transporting the assembly with the assembly key installed.
Abstract:
A method and assembly are disclosed for interfacing between a drug cartridge and a drug delivery device. Optionally, the drug delivery device includes a compartment that retains the cartridge during drug delivery and/or a stopper pushing assembly mounted to the device behind (proximal to) the compartment. In some embodiments, the cartridge may be inserted laterally into the compartment in front of the pushing assembly. For example, the delivery device may include a moving cartridge bay. The cartridge is optionally inserted into the bay and/or the bay and cartridge optionally move into the cartridge compartment. Alternatively or additionally, the cartridge compartment may have a proximal opening into which the cartridge is inserted and/or the pushing assembly may be moved into position after insertion of the cartridge. In some embodiments the cartridge may have a distal seal that is broken by a longitudinal movement.
Abstract:
An assembly of a drug delivery system, comprising: a first component; a second component which is configured to move linearly with respect to the first component; and, a resistance element configured to resist linear movement during transport of the first component with respect to the second component in a closed transport configuration but which is adapted to be overcome during nominal operation of the drug delivery system.
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.
Abstract:
Drug delivery devices of a standard size are adapted for injecting different doses. The device comprises an injection needle, a reservoir having an available volume, and a plunger for evacuating the volume into the needle for injection. A spacer is placed with the plunger in the reservoir to take up some of the available volume and leave a residual amount of available volume in the reservoir to correspond to a currently desired dose size. The spacer may be selected from different sizes corresponding to different doses.
Abstract:
An assembly of a drug delivery system, comprising: a first component; a second component which is configured to move linearly with respect to the first component; and, a resistance element configured to resist linear movement during transport of the first component with respect to the second component in a closed transport configuration but which is adapted to be overcome during nominal operation of the drug delivery system.
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.
Abstract:
An assembly for coupling a drug delivery device to a cartridge is disclosed. Optionally the assembly includes a coupling, for example a cannula, having one end extending toward the cartridge. The cartridge is optionally aligned by a guide. Optionally the cartridge has a limited freedom of movement. The coupling is optionally supported by a mount. In some embodiments, the mount is compliant enough that the end of the coupling that extends toward may move to said limited freedom of movement under a force less than a leak threshold of the connection between the coupler and the cartridge.
Abstract:
Extension rods of a telescoping assembly (TSA) may be assembled in a single direction. The rods may optionally be threaded together from a reverse extended configuration. The rods may optionally resist disattachement during extension. The inner rod may optionally included a leading fastener and/or the outer rod may optionally include a rear fastener. Each rod may optionally be molded as a single piece. End caps may optionally be added to the TSA after extension of the rods. An end cap may optionally include a rotation stopper. In some embodiments the TSA may include a supporting shoulder.
Abstract:
A method of securing an assembly of a drug delivery system, comprising: configuring at least a first component and a second component of the assembly in a closed configuration ready for placement into the drug delivery system; installing an assembly key including a locking element on the assembly to secure the assembly in said configuration; and, transporting the assembly with the assembly key installed