The present invention relates to a disposable syringe for the prevention of reuse, and more specifically to a disposable syringe for the prevention of reuse, which can restrain a plunger from moving after a medicine has been exhausted using the pressure of the plunger, thereby fundamentally preventing the syringe from being reused.

An injection device including a barrel having a medicament reservoir therein capable of fluid communication with a needle assembly at a distal end thereof and sealed at a proximal end thereof with a stopper. The injection device further includes a plunger rod having a distal rod end which is couplable with said stopper, wherein, when the plunger rod is coupled to the stopper, forward axial movement of the plunger rod causes forward axial movement of the stopper coupled thereto into the medicament reservoir in order to expel medicament through the needle assembly. Further, the plunger rod can be decoupled from the stopper by applying a rearward axial force on the plunger rod, said rearward axial decoupling force being less than a rearward axial force required to move the stopper rearwardly with respect to the barrel.

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.

The present invention relates to a medicament delivery device comprising a housing (10, 20, 24, 30), a biased medicament delivery member guard (64) arranged movable in relation to the housing from a proximally extended position to a retracted position, a power pack (87) comprising a plunger rod (88) and a force element (118) arranged to act on said plunger rod (88), which power pack (87) is actuated by a release clip (96) movable in relation to the housing and arranged to said plunger rod (88) for releasibly holding said plunger rod (88) with the force element (118) in a tensioned state; a rotator (82) rotatably arranged inside said housing, which rotator (82) is arranged with a guide element (80) and a medicament delivery member guard lock element (84, 86) on its outer surface, wherein said medicament delivery member guard (64) is arranged with release clip activation elements (112) operably arranged to act on said release clip (96) for releasing said plunger rod, and wherein said medicament delivery member guard (64) is further arranged with a rotator activator element (78) arranged to cooperate with said guide element (80) for turning said rotator (82), upon movement of said medicament delivery member guard (64) to the retracted position, and wherein, upon movement of said medicament delivery member guard (64) back to the extended position, said rotator activator element (78) will engage said medicament delivery member guard lock element (84, 86) and lock said medicament delivery member guard (64) in a shielding position after removal of said medicament delivery device from a medicament delivery site.

An assembly for a medication delivery device having a body, a piston rod and a setting nut. The piston rod is rotatable relative to the body in a dose setting state and is axially movable in a distal direction with respect to the body in a dose delivering state. The setting nut is secured against rotational movement with respect to the body, but is axially movable relative to the body, being helically coupled with the piston rod to axially travel in the proximal direction for setting a dose of a medication due to a helical movement of the setting nut with respect to the piston rod when the piston rod is rotated in the dose setting state, and is able to axially travel in the distal direction for delivering the set dose of the medication when the piston rod is axially moved in the dose delivering state of the assembly.

Injection systems with storage compartments to house various materials are described. The storage compartments facilitate provision of medical care in space- and time-efficient manners and are particularly useful in providing care in non-medical facilities.

Systems and methods for delayed delivery of a drug are disclosed. A drug delivery system may include a delivery member for insertion into a patient and a reservoir configured to receive a volume of a drug. An energy source may be activatable by the patient to actuate the reservoir to deliver the drug to the patient as a single bolus. A lockout system may be configured to have a locked state, wherein the lockout system prevents movement of the delivery member and/or activation of the energy source, and an unlocked state, wherein the lockout system permits movement of the delivery member and/or activation of the energy source. The lockout system may be configured to automatically change from the locked state to the unlocked state after a preselected time period has elapsed. An output element may generate a detectable output after the preselected time period has elapsed for notifying the patient.

A container for delivering a medicament to a target location includes a housing having a proximal end and a distal end, the housing including a cap locking tab at the distal end, and a vial containing medicament. The container includes a plunger slidable within the vial from the proximal end to the distal end of the vial to dispel the medicament, an injection member associated with the distal end, such that medicament dispelled from the vial passes through the injection member to the target location, and a slidable interaction member associated with the distal end of the vial configured to slide with the vial. An interaction between the slidable interaction member and cap locking tab causes the cap locking tabs to bias outward, and placement of a safety cap on the container after use locks the safety cap onto the container via the interaction with the cap locking tabs. The container may further include a resistance feature to control movement of the plunger rod relative to the vial.

A replaceable needle assembly is provided for a retractable, prefilled syringe comprising a barrel having a mounting member and a plunger, whereby the retractable needle can be replaced by a user without affecting the retraction mechanism. The replaceable needle assembly comprises a needle fitted to a retractable needle mount and a needle retainer. The needle mount is removably, screw-threadedly mountable to the mounting member of the barrel. The needle retainer comprises a plurality of fingers that releasably engage the retractable needle to thereby prevent inadvertent retraction of the retractable needle before engagement by the plunger. The plunger comprises a plunger seal comprising an outer member and an inner member that engages the needle for spring-driven retraction. At the end of retraction, a lock is formed between the plunger and barrel to prevent re-use of the syringe.

Systems and methods for delayed delivery of a drug are disclosed. A drug delivery system may include a delivery member for insertion into a patient and a reservoir configured to receive a volume of a drug. An energy source may be activatable by the patient to actuate the reservoir to deliver the drug to the patient as a single bolus. A lockout system may be configured to have a locked state, wherein the lockout system prevents movement of the delivery member and/or activation of the energy source, and an unlocked state, wherein the lockout system permits movement of the delivery member and/or activation of the energy source. The lockout system may be configured to automatically change from the locked state to the unlocked state after a preselected time period has elapsed. An output element may generate a detectable output after the preselected time period has elapsed for notifying the patient.