A fluid dispenser device having a body (1), and a dispenser head (2) provided with an orifice (3) and that is axially movable relative to the body (1). The body receives a reservoir (10) containing fluid, the reservoir has a hollow tube (11) having a proximal axial opening (12) closed by a stopper (20) adapted to slide in the tube (11). The dispenser head (2) includes a hollow cannula (4) connected at one end to the dispenser orifice (3), and provided at its other end with a perforating tip (5) having an opening (6) for perforating the stopper (20), the opening (6) defining a peripheral edge (7) extending around the opening (6) and includes a distal axial end and a proximal axial end, the distal axial end forming the distal axial end (59) of the perforating tip (5) arranged on the longitudinal central axis (A) of the cannula (4).

Disclosed herein is a syringe device comprises (a) an outer housing, (b) a barrel, (c) a stopper, and (d) a plunger with one or more grooves.

An injection device is provided herein comprising a container body for holding medication content having a distal end and a proximal end, the container body providing an outward flange at the distal end and a ledge at the proximal end; a piston placed at the proximal end of the container body for sealing and displacing medication content; a push rod placed inside the container body for moving the piston distally; and a connector providing an orifice for medication content delivery, placed at said distal end of said container body. The orifice in the connector provides medication content injection fluid pathway. With modification of the fundamental structure, a number of innovative device designs are created.

The invention relates to a torsion spring driven injection device for delivering individually set doses of a liquid drug wherein a torsion spring is strained by rotation of a rotatable dose setting element and released by axial movement of a clutch which couples the dose setting element with the drive tube and the drive tube with a piston rod guide driving the piston rod. When straining the torsion spring the clutch is decoupled from a piston rod guide such that the piston rod guide is able to rotate independently and coupled to the dose setting element. During dose expelling the clutch is moved into engagement with the piston rod guide and out of engagement with the dose setting element such that the piston rod guide rotates with the clutch under influence of the torsion spring. The invention further relates to a non-axial movable End-of-Content mechanism preventing the user from setting a dose larger than the content of the injectable liquid drug remaining in the cartridge of the injection device.

An autoinjector (100) for expelling a single dose of drug from a held cartridge (600) comprising a piston (630). The autoinjector comprises a base (220, 200) comprising a base thread component (204) and a plunger (310, 400) configured to be moved by a force provided by an actuator (330) and adapted for cooperation with the piston (630). A needle shield (350, 380) is axially movable from an initial extended position via a triggering position to a trigger release position. The needle shield (350, 380) is operatively coupled to a plunger release element (320) cooperating with the plunger (310, 400) to define a releasable retaining mechanism that retains the plunger release element (320) threadedly engaged with the base thread component (204) in a predefined relative rotational and axial position and against rotational bias provided by the actuator (330). The needle shield (350, 380) is configured for operating the retaining mechanism to release the retaining of the plunger release element (320, 1320) and base thread component (204, 1204) from the predefined relative rotational and axial position upon the needle shield (350, 380) being moved into its trigger release position. As the needle shield (350, 380) is moved from the initial extended position to the triggering position, a pair of cooperating means (388,328) operatively couples the needle shield (350, 380) with the plunger release element (320) to rotate the plunger release element against the rotational bias provided by the actuator (330).

A syringe includes a barrel having an internal surface defining an internal bore therein; a plunger having a distal end disposed within the internal bore of the barrel, and a proximal end disposed outside the internal bore of the barrel; and a dose divider configured to bear on the barrel in response to translation of the plunger relative to the barrel along the longitudinal direction. The dose divider includes a base including a flange that extends at least partly in a radial direction; and at least one column extending away from the base along the longitudinal direction. The at least one column includes a proximal end and a distal end opposite the proximal end, the proximal end of the at least one column being coupled to the base. The at least one column includes a sacrificial portion coupled to a frangible link.

The present invention relates to an automatic multifunctional liquid injector having a separation type operation device and enabling: an operation unit to be combined thereto in a replaceable manner such that an operation can be performed by selectively mounting a hydro-lifting operation unit and a filler operation unit according to a procedure; and set values to be input, in accordance with each operation, into a control means of a syringe driving unit such that the optimum set value is selected through a user's selection, thereby enabling an effective procedure.

A smart syringe includes a barrel and a plunger axially translatable within the barrel. The plunger includes a first body portion coupled to a second body portion. A printed circuit board is coupled and positioned between the first body portion and the second body portion. The printed circuit board can include a ground contact disposed on a first lateral side of the printed circuit, a plurality of contact pads disposed on a second lateral side of the printed circuit board, and a microcontroller coupled to a surface of the printed circuit board. A conductive ring is disposed about an outer circumference of the plunger. The conductive ring includes sliding contacts configured to engage the ground contact and the plurality of contact pads of the printed circuit board. The microcontroller is configured to detect a change in conductivity to identify a position of the plunger relative to the barrel.

A single-use medical syringe has a syringe lock that prevents repeated syringe aspiration and dispensing of fluids to patients. A pivoting syringe lock is coupled to the proximal open end of the syringe barrel. The syringe lock has or more cantilever lock forks in continuous, biased, sliding, abutting contact with the plunger. Each lock fork engages a corresponding plunger detent oriented on a proximal end of the syringe plunger, after the plunger is fully advanced within the syringe barrel. The plunger remains locked in an advanced position within the syringe barrel while each lock fork is engaged in its corresponding plunger detent. In some embodiments, a removeable plunger clip is coupled to the syringe to prevent inadvertent advancement of the plunger into the syringe barrel and premature locking of the syringe prior to administration of medication to a patient.

A drug delivery device for setting and dispensing of a dose of a medicament includes a housing extending in an axial direction and a piston rod to operably engage with a piston of a cartridge to displace the piston in a distal axial direction. The drug delivery device further includes a drive spindle operably engageable with the piston rod during dose dispensing and a drive member axially displaceable relative to the drive spindle against the action of a spring element during dose setting and being threadedly engaged with the drive spindle to form a spindle gear.