A cartridge retainer comprises a sleeve having a distal end a proximal end and a longitudinal axis extending between the distal end and the proximal end. One or more tabs extend radially from the sleeve toward the longitudinal axis and are configured to radially deflect away from the longitudinal axis. One or more deformable members extend axially from the distal end of the sleeve toward the one or more tabs and are configured to deform in a longitudinal direction toward the distal end.

A disposable syringe set includes a syringe barrel in which a medicinal fluid inlet is formed and a plunger is fitted and coupled to an opening at the other side; a first screw-coupling portion formed on an outer circumference of the medicinal fluid inlet; a syringe needle hub in which a syringe needle is coupled to one end and an inner side at the other end is fitted and coupled to the outer circumference of the medicinal fluid inlet; and a second screw-coupling portion formed on an inner circumference of the syringe needle hub and configured to be coupled to the first screw-coupling portion. The first screw-coupling portion is formed as a female-thread-type coupling portion whose diameter is smaller than a reference diameter of the medicinal fluid inlet. The second screw-coupling portion is formed as a male-thread-type coupling portion configured to be coupled to the female-thread-type coupling portion.

A cartridge holder, which has a distal end and a proximal end, comprises a coupling housing portion in which a cartridge can be inserted at least partly. The coupling housing portion is configured to be coupled to a part of a drug delivery device. The cartridge holder further comprises a fixing member which is connected with the coupling housing portion. The fixing member is moveable radially inwardly to a position in which the fixing member is suitable for securing the cartridge against distal displacement of the cartridge.

An apparatus is disclosed for storing and dispensing a pen needle for an injection device, including a packaging assembly including a pliable outer cover, the outer cover having a hub portion, a needle portion disposed at a distal end of the hub portion, and a flange disposed at a proximal end of the hub portion, the hub portion having internally protruding splines or other structures for engaging a hub of a pen needle. The hub portion is sufficiently pliable for a user to press gripping portions of the hub portion so that corresponding internal portions of the hub portion between the splines contacts the pen needle hub to increase a surface area contact between the outer cover and a pen needle therein.

In one aspect of the invention, a needle assembly is provided, including: a body having a proximal end, a distal end, and a channel located therebetween, the body being configured to be mounted to an injector; a needle fixed to the body, the needle having proximal and distal ends, the distal end extending distally from the distal end of the body and being formed for insertion into a patient, the proximal end of the needle being in communication with the channel; and, a filter disposed in the channel proximally of the proximal end of the needle. Advantageously, a needle assembly is provided which permits mixing of at least two substances in preparation for injection, without modification to the associated injector.

There is provided a pharmaceutical syringe unit that is mounted to a pharmaceutical injection device main body and holds a pharmaceutical syringe, in order to mount the pharmaceutical-filled pharmaceutical syringe to a pharmaceutical injection device, wherein a syringe cover is slid in the forward and backward direction with respect to a distal end cap by the operation of the pharmaceutical injection device main body, allowing movement between a needle insertion position at which the insertion of an injection needle into a target is completed, and a needle withdrawal position at which the withdrawal of the injection needle from the target is completed, and the range over which the syringe cover can be slid by a guide component is greater than the distance between the needle insertion position and the needle withdrawal position.

A medicant injection device includes a compressible body, a tip, and an outer luer body. The compressible body has a proximal end, a distal end, and a plurality of bellows, and defines an inner cavity for holding a liquid medicant. The tip is positioned at the proximal end of the compressible body. The outer luer body includes internal threads, and is positioned over and engaged with the tip to form a first fitting therewith. The first fitting is configured to be connected with a second fitting. A medicant injection device includes a compressible body having first and second arms, a receptacle interconnected with the compressible body and defining an inner cavity, and a first fitting configured to engage a second fitting. The compressible body is configured to be compressed by forcing the distal end of the first and second arm toward each other.

The present invention relates to an assembly comprising an injection device comprising a container for a product, wherein the container includes a distal tip encompassing a channel providing a passageway for transferring the product, and an adaptor mounted onto the distal tip. The assembly further includes a heat-shrinkable film covering at least part of the container and at least part of the adaptor, wherein the heat-shrinkable film maintains the adaptor blocked in rotation and in translation relative to the container when the heat-shrinkable film is in heat-shrunk condition.

Embodiments of a retractable syringe assembly are provided that include a dual syringe barrel configuration. One or more embodiments include reuse prevention features and features that prevent premature activation of the retraction mechanism. Methods for aspirating and expelling liquid from medical devices are also provided.

A system for injecting includes a syringe body having proximal and distal ends, a syringe interior, and a syringe flange at the proximal end thereof. The system also includes a stopper member disposed in the syringe interior. The system further includes a plunger member coupled to the stopper member. The plunger member includes a rotatable member configured to insert the stopper member distally in the syringe interior relative to the syringe body with rotation of the rotatable member. The plunger member further includes a proximal portion proximal of the rotatable member configured to be moved distally to also insert the stopper member distally in the syringe interior relative to the syringe body to eject about microliters of fluid from the syringe interior.