Precision low-dose, low-waste syringe configurations have a reduced diameter lumen for dispensing 0.01 ml increments of contents. Plunger and lumen configurations and a needle interface eliminate dead space. Ergonomic attachments improve the control and precision of delivery of syringes. An attachment main body includes a gripping surface to permit a user to engage the attachment and move the attachment main body, and thus the syringe plunger relative to the syringe barrel using sliding movement. Optical enhancement features are provided on the attachment to improve the readability of gradations and plunger position. The attachment may be provided with an assist feature, which may be a traction wheel mounted on the attachment body. An alternative configuration suitable for syringe contents of higher viscosity may include a pair of toothed pinion gears on a wheel and which cooperate with respective toothed racks formed on or fastened to the syringe body.

Embodiments of the present disclosure describe drug delivery with a reusable pen injector. In particular, several embodiments are directed to motor-driven delivery of cartridge-based medicaments with an electronic pen injector device and associated pen cap device.

An assembly for a drug delivery device and an associated drug delivery device are provided. The device has a drug delivery device housing and a medicament contained in the drug delivery device housing. A clutch is established between the dose knob and the dial link to prevent inadvertent proximal axial movement of the lead screw away from the cartridge piston, which can lead to dosing inaccuracies.

An adapter for releasably attaching a syringe to an injector. The adapter comprises a mounting mechanism positioned at a rear end of the adapter to mount the adapter in a desired position relative to a front wall of the injector; and a syringe carrier section adapted to seat at least a portion of the syringe. The syringe carrier section defines a first opening on a top thereof to allow placement of the syringe therein from the top and a second opening in a rear section thereof to allow the drive member of the injector to communicate forward force to the plunger. A cover portion extends over a rearward end of the first opening and has a first end configured to abut the flange of the syringe when the syringe is positioned within the syringe carrier section.

A medication delivery device includes a disposable portion and a reusable portion. The disposable portion includes a therapeutic agent delivery assembly, and the therapeutic agent delivery assembly includes a needle. The therapeutic agent delivery assembly is translatable from a stowed configuration to a deployed configuration. The reusable portion includes a first rack and pinion mechanism and a second rack and pinion mechanism. The first rack and pinion mechanism is actuatable to translate the therapeutic agent delivery assembly from the stowed configuration to the deployed configuration. The second rack and pinion mechanism is actuatable to translate a plunger and thereby cause the therapeutic agent delivery assembly to deliver a therapeutic agent from the needle.

A device for administering a fluid product includes a first housing part with a receiver for the product, a second housing part detachably connectable to the first housing part, a piston rod held such that it can be displaced for the exertion of an emptying movement, an actuatable or releasable drive element for the piston rod, a coupling element including a coupling input element that couples the drive element to the piston rod in a coupling engagement, transmits a driving force of the drive element to the piston rod, and triggers the emptying movement, and a decoupling element displaceably connected to the second housing part and coupled to the first housing part such that it is displaced, by a movement of the housing parts in relation to each other when the housing parts are separated into a decoupling position wherein the piston rod is decoupled from the coupling input element.

A cassette for a drug delivery device is described that includes a sleeve, a syringe having a barrel disposed in the sleeve, and a plunger-stopper slidably disposed within the barrel. The cassette further includes a spacer that is configured to be coupled to the sleeve. The cassette can form a part of an apparatus for injection of a therapeutic product along with a drug delivery device.

An applicator (1) comprising: a body (2) defining a chamber (14) for storing an adhesive composition, and an outlet (16) for delivering the adhesive composition stored in the chamber (14), a piston (4) mobile in translation relative to the body (2), a drive element (6) mobile in rotation relative to the body (2), and configured to be releasably engaged with a guide (100, 200, 300) external to the applicator (1), wherein rotating the drive element (6) relative to the body (2) causes the piston (4) to translate relative to the body (2) so as to reduce a volume of the chamber (14) and force the adhesive composition out of the applicator (1) through the outlet (16).

A dose control and overrun protection mechanism is provided for use in fluid delivery devices such as wearable infusion pumps and medication delivery pens. The mechanism comprises oppositely rotating spur gears with surface features that guide a pin on a plate rotating along a desired arc path (e.g., less than 180 degrees) in alternating directions per delivery cycle of a predetermined dose amount. The surface features are configured to controllably rotate one of the spur gears and output a selected amount or rotation to another component in the power train of a fluid delivery device regardless of direction of actuator input and regardless of whether the actuator rotates beyond the arc path.

A cartridge holding unit includes a cartridge container forming an outer surface of the cartridge holding unit and having an inner space, and a cartridge holder forming a tube-shaped holding section arranged in the inner space of the cartridge container, the cartridge holder configured to firmly hold a cartridge in parallel with the cartridge holder and the cartridge holder and the cartridge container are firmly coupled to each other regarding their axial orientations.