User-friendly attachment mechanisms for pen needles provide improved handling and ease of use, including locking installation and removal features and sensory feedback when a needle-bearing hub is seated on a pen.

An injector device includes a housing and a cartridge having a reservoir for medicament. The injector device further includes a needle unit comprising a needle, and an actuator. The needle unit is movably mounted to the housing and, prior to use of the injector device the reservoir, is sealed from the needle. The actuator is configured to move the needle unit 5 into engagement with the cartridge such that the needle is moved into fluid communication with the reservoir. A thread is arranged to cause rotation of the needle unit as the needle unit moves into engagement with the cartridge.

The disclosure relates to a syringe, comprising a syringe body with a nozzle and a threaded connection. The syringe body comprises a side wall and a front wall, wherein the syringe body comprises a cycloolefin as a first material, at least in portions. The first material forms an internal wall of the syringe body. The threaded connection comprises, at least in portions, as a second material a material other than the cycloolefin, wherein the first and the second material are integrally bonded to one another. The second material extends in the region of the front wall at least in portions over the first material, so that the front wall comprises, at least in portions, a two-layer region. The first and the second material in the two-layer region have a mutually engaging structure.

The present invention relates to an injection needle assembly having opposite distal and proximal ends, and wherein the assembly comprises an injection needle having proximal and distal pointed ends, wherein the distal pointed end is arranged to penetrate a membrane arranged at the proximal end of a medicament container; a tubular needle holder comprising distal engagement means and proximal engagement means; a tubular cap comprising proximal outer engagement means and proximal inner engagement means; a tubular needle cover comprising first engagement means arranged to cooperate with the proximal engagement means, and second engagement means arranged to cooperate with the proximal outer engagement means of the cap; characterized in that said needle cover is arranged to be displaced from a first position wherein the second engagement means and the proximal outer engagement means prevents the needle cover and the needle holder to be axially displaced by a linear displacement, to a second position wherein the needle cover and the needle holder are distally displaced, and wherein the proximal inner engagement means of the cap and the distal engagement means of the needle holder prevents the needle holder to be proximally displaced but allows the needle cover to be distally displaced.

A syringe holder includes: a barrel body that holds a syringe; a holder opening; deformation promoting portions; and radial movement-restricting portions. The radial movement-restricting portions are provided close to the deformation promoting portions. Being brought into contact with first portions, the radial movement-restricting portions restrict the syringe from moving in a radial direction with respect to the barrel body.

Improved apparatus for use with medication in fluid form, which is particularly beneficial for medications having a relatively high viscosity. The disclosed syringe adapter has an opening that is relatively large, as compared to a conventional needle, and thus affixing the disclosed syringe adapter to a syringe improves syringeability of higher-viscosity medications. Some embodiments feature a lateral extension that prevents inserting the syringe adapter too far into a medicine bottle, and some embodiments feature a component that assists in firmly grasping. When the disclosed syringe adapter is affixed to a pistol-grip or tab-handled syringe, the medication withdrawn into the pistol-grip syringe can be more easily administered from the syringe barrel. In some embodiments, the syringe adapter will be replaced with a needle prior to injecting the medication, while in some other embodiments, the needle is affixed to the in-place syringe adapter for the injection. In yet other embodiments, the needle is affixed to a needle holder that, in turn, is affixed to the in-place syringe adapter for the injection.

A glass syringe barrel is provided that has an at least partially conically shaped upper portion and a longitudinal axis. The glass syringe barrel has a top end through which a liquid can be ejected and a bottom end into which a plunger stopper can be pushed. The glass syringe barrel includes, in a direction from the top end to the bottom end, a cone, a shoulder region, and a body region. The shoulder region has and outer contour that has a concave and substantially circular arc-shaped area c.sub.1 with an outer radius r.sub.1. The outer contour of the glass syringe barrel in the shoulder region is defined by a certain minimum value the radius of curvature.

An apparatus includes a housing coupled to a medicament container, which is coupled to a needle. An injection assembly is disposed within the housing and includes an energy storage member and an actuation rod. A distal end portion of the actuation rod is disposed within the medicament container. The energy storage member can produce a force on a proximal end portion of the actuation rod sufficient to move the distal end portion of the actuation rod within the medicament container. This can convey at least a portion of a substance from the medicament container via the needle when a distal tip of the needle is disposed within a first region of a target location. The force is insufficient to move the distal end portion of the actuation rod within the medicament container when the distal tip of the needle is disposed within a second region of the target location.

A syringe adapter includes a housing having a first end and a second end and defining an interior space, a seal arrangement received within the interior space of the housing, a connector body positioned adjacent the first end of the housing and configured to be connected with a syringe barrel with the connector body secured to the housing and rotatable relative to the housing in first and second directions, and a cannula secured to the connector body. The connector body is axially fixed relative to the housing. The seal arrangement is configured to cooperate with the cannula to provide a sealed transfer of fluids through the cannula to a mating connector.

Methods and apparatus to reduce deadspace in syringes and other devices with the use of volume displacing members that occupy space within one or more interior spaces of such devices. The volume displacing members are also equipped with one or more internal flow passages that facilitate a flow of a fluid through it. The volume displacing members are also adapted to cooperate with features of the devices that house them to form air-tight and liquid-tight seals that at least partially determine a fluid pathway through the devices.