Abstract: The invention relates to a needle protection device for a pre-filled syringe with staked needle. This device comprises a blocking mechanism, comprising means for fastening to a syringe body, a needle shield, into which the needle can be driven, and an after-use safety system comprising a sleeve defining a central axis along which it is movable and means for resiliently loading the sleeve in a forward position in which it is able to cover the needle. The sleeve comprises an outer tube and a coaxial inner tube that are manufactured in one piece by injection molding, while the outer tube is arranged so as to cooperate with the blocking mechanism, and the inner tube is detachable from the outer tube and axially connected in translation with the needle shield.

Abstract: An after-use safety system for a syringe, including a barrel which defines a central axis along which it can move in translation and which includes a radial opening forming a guidance path for a pin, an immobiliser, which is arranged inside the barrel and which includes the pin interacting with the barrel, and a return spring configured to elastically load the barrel forwards with respect to the immobiliser, the immobiliser including a radial stopping means for immobilising the barrel along one axis radial to the central axis when the barrel is forced towards the rear after use of the syringe.

Abstract: The invention relates in particular to a device (100) for collecting a sample of a liquid in a container, characterized in that it has: a housing (10) with a longitudinal axis (AL); a component (20, 20?, 20?) comprising: a body (26) provided with at least one channel (21) having a proximal end (21p) and a distal end (21d); a receptacle (24) fixed with respect to the body (26) and situated in the continuation of the proximal end (21p) of said at least one channel (21), said component (20) being mounted rotatably with respect to the housing (10) about the longitudinal axis of this housing (10) between a closure position, in which the distal end (21d) of said at least one channel (21) is closed by the housing (10), and an open position, in which the distal end (21d) of said at least one channel (21) is able to establish a fluidic communication with the container; and an elastic valve (30) housed in the receptacle (24).

Abstract: An after-use safety system for a syringe, including a barrel which defines a central axis along which it can move in translation and which includes a radial opening forming a guidance path for a pin, an immobiliser, which is arranged inside the barrel and which includes the pin interacting with the barrel, and a return spring configured to elastically load the barrel forwards with respect to the immobiliser, the immobiliser including a radial stopping means for immobilising the barrel along one axis radial to the central axis when the barrel is forced towards the rear after use of the syringe.

Abstract: A method for improving the accuracy of the quantity of medication injected using an injector pen, the injector pen comprising a needle, a cartridge provided with a piston and a motorized assembly for driving the piston in translation inside the cartridge, the motorized assembly comprising a pusher, the method comprising successive steps consisting of a) selecting a desired quantity of medication to be injected, b) inserting the needle into the patient body, c) moving the pusher in a forward direction in order to push the piston over a certain stroke, which is determined as a function of the desired quantity of medication selected at step a), and d) moving the pusher in a backward direction, so as to allow the piston to deform towards the pusher and take its original shape.