A syringe comprising: a body delimiting a chamber; a piston able to slide in the chamber of the body along a longitudinal axis of the syringe, wherein the piston comprises a rod, a head, and a finger rest, which are all in one piece; and a deformable retention device designed to prevent the piston from leaving the body entirely, wherein the retention device is force-fitted in the chamber, extends around the piston over an angular sector strictly greater than 180 when it is in the assembled position, and has protruding external ribs which extend parallel to the longitudinal axis and are plastically deformable when the retention device is assembled in the chamber.

A stopper being adapted to be fixed in a rear end portion of a syringe is provided. The stopper is reduced in diameter at a fitting portion of a rod portion of a plunger rod so as to have a diameter smaller than an inner diameter of the rear end portion and be insertable into the rear end portion. After insertion, the stopper is increased in diameter and is fixed in the rear end portion so as not to be movable in an axial direction by fitting a first recessed portion on a periphery into a second protruding portion of an inner surface of the rear end portion. The stopper has, on an inner surface, a third protruding portion having an inner diameter smaller than an outer diameter of a gasket support flange of the rod portion in a fixed state.

Devices and methods for the injection of implants are provided, allowing for single-hand user implementation and activation. An implantation device comprises a body having a proximal end, a distal end, and a barrel extending therethrough. A needle extends through the distal end of the body and is in fluid communication with the barrel. An implant is positioned within the barrel for delivery to a subject, and a plunger, also positioned within the barrel, moves toward the distal end of the body so as to push against the implant and cause the implant to move in the distal direction, through the needle.

A drug delivery device includes a container for storing a drug having a longitudinal axis. A plunger rod aligned with the longitudinal axis of the container has a first end and a second end, where the second end is disposed within the container. A stopper is disposed in and movable relative to the container for expelling the drug, and a drive mechanism is operatively coupled to the first end of the plunger rod. The drive mechanism is configured to deliver a drive force to move the plunger rod along the longitudinal axis and through the container. A chamber disposed between a plunger rod and the stopper is adapted to oppose the drive force of the drive mechanism.

The present disclosure relates to an assisted injection device for injecting a composition contained in a medical container. The injection device includes a main body adapted to receive a medical container in a fixed position relative to the main body. The main body includes an inner wall part and a second part. The first part includes an inner spring-loaded piston rod, and an outer piston body extending coaxially around the inner spring-loaded piston rod. The second part is arranged between the inner spring-loaded piston rod and the outer piston body, and is provided of the piston. The actuator is adapted to selectively move the second part between the proximal first portion and the distal second position.

An injection device (10) comprises an injection solution receptacle (30) and a plunger (70) at least a portion of which is slidably received in the injection solution receptacle (30), wherein the plunger (70) is displaceable relative to the injection solution receptacle (30) in a distal direction in order to expel an injection solution contained in the injection solution receptacle (30) from the injection solution receptacle (30). A first plunger stop mechanism (140) is adapted to stop a displacement of the plunger (70) relative to the injection solution receptacle (30) in the distal direction at a first dosing position (P1). A second plunger stop mechanism (140) is adapted to stop a displacement of the plunger (70) relative to the injection solution receptacle (30) from the first dosing position (P1) in the distal direction at a second dosing position (P2), wherein the first and the second dosing position (P2) of the plunger (70) are selected in such a manner that the plunger (70), upon being displaced relative to the injection solution receptacle (30) between the first and the second dosing position (P2) is adapted to expel a desired dose of the injection solution contained in the injection solution receptacle (30) from the injection solution receptacle (30).

A filling adapter (12) for connecting a syringe (14) containing an injection solution to an injection device (10), the filling adapter (12) comprises a hollow sleeve (16) and an adapter element (18) accommodated within the sleeve (16), wherein the adapter element (18) comprises a first connecting port (20) adapted to be connected to the syringe (14) and a second connecting port (22) adapted to be connected to the injection device (10), and wherein the adapter element (18) is provided with a through-opening (26) extending therethrough. A cannula (27) protrudes from the second connecting port (22) of the adapter element (18), wherein the cannula (27) is arranged in fluid communication with the through-opening (26) extending through the adapter element (18), and wherein the adapter element (18) further is provided with a venting device (64) which is adapted to vent gas introduced from the syringe (14) into the injection device (10) via the through-opening (26) and the cannula (27) into the ambient.

A drug delivery device with a housing configured to connect to a dispensing unit including a compartment containing a fluid, a piston rod configured to move in a proximal direction for ejecting the fluid, and a dosing mechanism including an actuation member to be actuated by a user. The device includes a conversion mechanism configured to convert a movement of the actuation member to a movement of the piston rod. The conversion mechanism includes a dose selector member, which is rotationally fixed to the housing and axially movable with respect to the housing, and a dosing member, which is rotationally movable with respect to the dose selector member. The drug delivery device includes a friction reduction mechanism provided between the dose selector member and the dosing member to reduce friction between the dose selector member and the dosing member.

A fluid dispensing device having a barrel having a lumen for containing a fluid therein and a flexible structure extending from the barrel. A plunger is axially slidable within the lumen to dispense fluid from the barrel, the plunger having a first set of grooves spaced apart a first distance and a second set of grooves spaced apart a second distance. The flexible structure includes a flexible arm extending transversely with respect to the barrel and configured to engage the grooves.

A safety syringe comprising a needle redirection device that is desirably configured to bend the needle shaft forwardly of the barrel following an injection to thereby redirect the needle tip from a first position where it projects forwardly in coaxial alignment with the syringe barrel to a second position where the needle tip is covered or protected from incidental or accidental contact and associated needle sticks. Both sliding and pivoting embodiments are disclosed.