The purpose of the present invention is to prevent the occurrence of an accident in which a patient pricks their hand or other part of the body with a syringe needle by mistake in stowage operation.A sleeve (10) is fitted over a syringe cylinder (2) so that the sleeve (10) is axially movable from an administration position at which a syringe needle (5) protrudes to the front end side to a stowage position at which the syringe needle (5) is stowed. A coiled spring (16) which presses the sleeve (10) toward the stowage position is installed between the sleeve (10) and the syringe cylinder (2). The coiled spring (16) is held in a compressed state by a spring holder (17). The spring holder (17) is operatively associated with the syringe cylinder (2) so that the coiled spring is released by further pressing the syringe cylinder (2) to the front end side after the administration of a medical solution. The sleeve (10) and the syringe cylinder (2) are axially engaged with each other so that the sleeve (10) is locked at the stowage position when the sleeve (10) has been moved to the stowage position by the pressing force of the coiled spring (16).La présente invention vise à empêcher la survenue d'un accident dans lequel un patient pique sa main ou une autre partie du corps avec une aiguille de seringue par erreur lors d'une opération de rangement. Une gaine (10) est montée sur un cylindre de seringue (2) de telle sorte que la gaine (10) est mobile axialement d'une position d'administration, dans laquelle une aiguille de seringue (5) fait saillie sur le côté d'extrémité avant, à une position de rangement dans laquelle l'aiguille de seringue (5) est rangée. Un ressort enroulé (16), qui presse la gaine (10) vers la position de rangement, est monté entre la gaine (10) et le cylindre de seringue (2). Le ressort enroulé (16) est maintenu dans un état comprimé par un support de ressort (17). Le support de ressort (17) est associé de façon fonctionnelle au cylindre de seringue (2)
