A drug injection control device allows a structure in which a piston rod moving with a rod guide makes a linear motion to stably inject a drug set through a dose dial. When an injection amount of drug is preset through an injection amount setting module configured to make a rotational motion with the dose dial in a housing to set the amount of drug to be injected by storing the twisting moment in a torsion spring, in actuating a drug delivery module switchably coupled to the injection amount setting module by an injection button on top of the drug injection control device, the rod guide is connected to the inside of the piston rod through a reset tube movably coupled to the injection button to allow a sub-linear motion of the piston rod.

A drug injection control device has a structure in which a rod lock screw-coupled to an outer circumferential surface of a piston rod can only make a linear motion under restricted rotation in a rod holder with the rotation of a rod guide and the sub-linear motion of the piston rod. When an injection amount of drug is preset through an injection amount setting module configured to make a rotational motion with a dose dial in a housing to set the amount of drug to be injected by storing the twisting moment in a torsion spring, a button plate is fixed and positioned in the dose dial to perform a function of supporting a button spring, and an injection button is slidably coupled through the button plate, so the injection button rotates simultaneously with the rotation of the dose dial, but allows a stable pushing operation through the button plate.

An automatic injection device, including a housing arranged along a longitudinal axis and having a forward end and a rearward end, the housing is configured to receive a syringe including at least one syringe piston and a needle coupled to a forward end thereof; a plunger rod adapted to be retained with respect to the housing in an initial operative orientation; at least one resilient element arranged to forwardly bias the plunger rod relative to the syringe; a needle shield adapted for selectable axial displacement with respect to the housing along the longitudinal axis, whereas rearward displacement of the needle shield exposes the needle and forward displacement of the needle shield covers the needle; and a trigger element configured to be axially rearwardly displaced upon rearward displacement of the needle shield relative to the housing and thereby allow forward displacement of the plunger rod relative to the syringe under the urge of the at least one resilient element.

The invention relates to an injection device (1) for injecting a pharmaceutical substance, having a proximal part (5) which has a drive (7) to implement an injection, and having a distal part (13) which is configured to accommodate an injection loading part (3), which has a packaging means receiving part (17) and a primary packaging means (23) which held in the packaging means receiving part (17) and in which a pharmaceutical substance is received, wherein the pharmaceutical substance can be injected from the injection loading part (3) when the injection loading part (3) is arranged in the distal part (13), wherein the distal part (13) is designed in such a way that the injection loading part (3) can be inserted axially into the distal part (13), and wherein the injection device (1) has a screen (15) which is designed and arranged in such a way that an injection needle (25) of the injection loading part (3) is concealed from a user during use of the injection device (1).

Embodiments of the invention are directed to flush syringe assemblies comprising an integrated contamination-prevention device integrated with device connector flushing positioned so that the practitioner cannot forget to apply disinfectant. The flush syringe assemblies comprise a barrel with an elongate plunger rod disposed therein and a cap comprising a passageway. The plunger rod includes a stopper of which at least a portion can be embedded in the passageway of the cap to form a plug in the cap. Methods of flushing a vascular access device (VAD) while providing a flush syringe assembly described herein are also disclosed.

A syringe, having a front portion carrying a hollow, axially extending needle, a container, running from said front portion and forming a container rear end portion, a plunger, extending and being movable axially in the container, the needle rear end being in fluid connection with the container and the plunger being arranged to suck liquid, e.g. a liquid comprising insulin, through the needle when drawn away from the needle and to discharge liquid through the needle when pushed towards the needle, the plunger having a piston portion, turned to the needle rear end, and a coupling portion arranged to co-act with the piston portion for moving the piston portion in the container.

An injector device comprising an elongate housing having a proximal end and a distal end, and configured to receive a container of medicament, a plunger rod moveable longitudinally within the housing between a primed position and a completed position, the plunger rod being configured to engage a container of medicament when received in the housing; wherein the housing comprises an indicator located in a proximal region of the housing; the indicator comprising a spindle, the spindle comprising a shaft and a dial, and wherein the shaft of the spindle comprises a threaded arrangement configured to engage with a threaded arrangement on the plunger rod such that longitudinal movement of the plunger rod from the primed position towards the completed position is configured to cause the dial of the spindle to rotate to provide a user with information associated with the progress of the injection process dependent upon the longitudinal position of the plunger rod.

A drive assembly includes a drive ribbon that can be retracted and extended. The retracted ribbon defines a spiral and the extended ribbon defines a helix. The drive ribbon is incrementally moveable between the retracted spiral configuration and extended helical configuration to move a piston within a container. A medical delivery device for advancing a piston in a medicament container to expel a medicament can include such drive assembly.

The present disclosure relates to an injection head of a needleless syringe, needleless syringe body, and needleless syringe. The injection head includes a medicine barrel and a piston rod. The medicine barrel opens at a rear end and has an injection micropore at a front end. A piston of a piston rod is movable within a chamber in an front-rear direction, the piston and a sidewall and a front wall of the medicine barrel jointly define a medicine liquid receiving chamber. The piston rod is provided therein with a medicine liquid channel. The injection head and the vial can be mounted together on the needleless syringe body, the medicine liquid can flow via the medicine liquid channel into the medicine liquid chamber, and the piston rod can eject medicine liquid within the medicine liquid receiving chamber outside via the injection micropore. According to the solution of the present disclosure, a vial, such as a cartridge vial and the like, can be received within a needleless syringe body, and medicine suctioning and injection can be completed efficiently and effortlessly during each use, where there is no need for removing the vial or separating the medicine barrel from the vial.

Embodiments of the invention are directed to flush syringe assemblies comprising an integrated contamination-prevention device integrated with device connector flushing positioned so that the practitioner cannot forget to apply disinfectant. The flush syringe assemblies comprise a barrel with an elongate plunger rod disposed therein and a cap comprising a passageway. The plunger rod includes a stopper of which at least a portion can be embedded in the passageway of the cap to form a plug in the cap. Methods of flushing a vascular access device (VAD) while providing a flush syringe assembly described herein are also disclosed.