A spring assisted drug delivery device comprising: a housing; a piston rod having a longitudinal axis, a distal end and a proximal end that is axially movable in a distal direction relative to the housing, a mid-body fixed inside of the housing and coupled to the piston rod in such a manner that the piston rod is axially movable in a distal direction relative to the mid-body, and wherein a preloaded spring is operatively coupled to the piston rod in such a manner that the spring is released and the stored force in the spring supports driving the piston rod in the distal direction during a dose administration step.

This disclosure refers to a dosing mechanism for use in a drug delivery device implementing a dialing mode and a dispensing mode, wherein the dosing mechanism comprises a dose button, a housing and a determination unit. The dose button is activatable by the user for dose dispense, causing displacement of an indicating element connected to the housing from a first position to a second position. The determination unit is adapted such that it detects the indicating element in its second position and thereby determines that the dosing mechanism is in the dispensing mode. With some embodiments, it is possible to distinguish between the dialing mode and the dispensing mode. Some embodiments further refer to a drug delivery device comprising the above dosing mechanism.

A dose setting mechanism of a drug delivery device and a respective method of assembling said dose setting mechanism. The dose setting mechanism includes an inner housing having a helical groove along an external surface of the housing. The inner housing includes a rotational stop member near one end of the helical groove. The dose setting mechanism also includes a dial sleeve rotatably engaged with the helical groove of the inner housing. When a user rotates the dial sleeve to select a dose, the rotational stop member prevents the user from selecting a dose greater than a pre-defined maximum selectable dose.

A method of administering subcutaneous treatment to a patient is provided. The method includes delivering, by a needle-free injection device, a first volume of a treatment at a first location on a surface of a body of the patient; detecting a movement of the needle-free injection device relative to the first location; determining, from the movement of the needle-free injection device relative to the first location, a second location of the needle-free injection device relative to the first location; determining a second volume of the treatment to deliver at the surface of the body of the patient at the second location; and delivering, by the needle-free injection device, the second volume of the treatment at the second location on the surface of the body of the patient.

A medicine dispensing device and system for administering a selected drug. The medicine dispensing device includes a vessel configured to retain a drug to be dispensed. The medicine dispensing device may comprise a first series of zones of varying widths on a surface of the vessel, with each zone of the first series of zones corresponding to a pre-determined dose of the drug for a first medical condition wherein the first series of zones are correlated to a first series of values of a physical characteristic of a patient; and a second series of zones of varying widths on the surface of the vessel, with each zone of the second series of zones corresponding to a pre-determined dose of the drug for a second medical condition wherein the second series of zones are correlated to a second series of values of the physical characteristic of a patient.

The present invention is generally directed to an assembly for a drug delivery device comprising a first threaded member (50, 50), a second threaded member (40, 60) with a longitudinal axis and a thread (61), having at least two consecutive portions (62, 63, 64) with different leads. The first threaded member (50, 50) and the second threaded member (40, 60) are adapted and arranged to rotate with respect to one another about the longitudinal axis of the second threaded member (40, 60) during dose setting operation of the assembly, the first threaded member (50, 50) thereby being axially displaced along the second threaded member (40, 60) from a start position to an end position with respect to the second threaded member (40, 60) due to the mechanical cooperation of the first threaded member (50, 50) with the thread (61). According to the invention, a fast portion (62, 64) of the thread (61), having a greater lead than a slow portion (63) of the thread (61), comprises a multi-start thread and the slow portion (63) comprises less starts than the fast portion (62, 64). The invention is further directed to a drug delivery device for setting and dispensing a number of user variable doses of a medicament comprising such an assembly.

A medicament delivery device (TO) is presented having a housing and a medicament container holder arranged movable in relation to the housing and capable of accommodating a medicament container. The device also has an activator having a plunger rod arranged to be moved in the proximal direction of the medicament delivery device by the activator to act on a stopper in the medicament container for delivering a dose of medicament through a medicament delivery member when the activator is operated. A delay mechanism is also arranged between the activator and the plunger rod, which is provided with delay elements allowing movement of the activator in the proximal direction after movement of the plunger rod has terminated.

A medicament delivery device having a housing, arranged to accommodate a medicament container and a power unit, where the power unit has a plunger rod, a drive spring, operably arranged to act on the plunger rod and on said medicament container, an actuator having holding elements that can releasably hold the plunger rod with said drive spring in a tensioned state, and an actuator sleeve operably connected to said actuator for releasably locking said holding elements in a holding state. The medicament delivery device also can have a medicament delivery member guard slidably movable in said housing that can act on said actuator sleeve for setting said holding elements with said actuator sleeve in a first activation state; an activator unit arranged to be manually operated and which is operably connected to said plunger rod for setting said holding elements with said actuator sleeve in a second activation state.

An electronic automatic injection device including a housing configured to receive an injection module containing a material to be injected, an electric motor having a rotary drive output, at least one forward driving spring and a multifunctional electric motor driven drive assembly responsive to the rotary drive output of the electric motor and being operative in a first mode of operation, when the injection module includes a prefilled syringe, to enable the at least one forward driving spring to displace the prefilled syringe in a forward direction and in a second mode of operation, when the injection module includes a needleless cartridge, to eject the injectable liquid from the prefilled syringe through a needle.

A dose setting mechanism for a medicament delivery device, which dose setting mechanism comprises, a tubular member 10 having a longitudinal track 18 of a predetermined length; a dose drum 40, coaxial with the tubular member 10, and being axially and rotationally movable relative to the tubular member 10; a stop member 90, axially movable but rotationally locked relative to the tubular member 10, and further being in an axially slaved connection with the dose drum 40; wherein said stop member 90 comprises a track follower 98 in engagement with the longitudinal track 18, such that rotational movement of the dose drum 40 relative to the tubular member 10 may cause a maximum axial displacement of said dose drum 40 and said stop member 90, relative to the tubular member 10, corresponding to said predetermined length.