SYRINGE OF FIXED DOSE WITH ABSORPTION RESTRICTION Russian patent published in 2009 - IPC A61M5/315 A61M5/32 

FIELD: medicine.

SUBSTANCE: invention concerns medical equipment, namely to injection devices and, in particular to syringes. The retracting syringe with the limited maximum used volume contains the extended hollow case of a syringe, an extended plunger, located with possibility of reciprocating moving in slipping tight contact with is longitudinal a proceeding wall of the case, an involved needle, the chamber for a liquid, located in the case between an involved needle and a head plunger, and limiting dose a design interfering plunger to type larger volume of a liquid, than the limited maximum used volume of a syringe. Thus the plunger has the tubular wall forming a forward trailer site, containing a head with plunger inspissation on it, the back trailer site containing a trailer cap, and the hollow internal area containing a cavity for retraction. The involved needle is located in a forward trailer site of the case. Thus the needle does not suppose a reuse of a syringe after an injection thanks to retraction in a cavity for retraction.

EFFECT: maintenance of protection of the user and the others from casual nyxes with a needle and influences of pathogenic microorganisms transferred with blood, also is more convenient, strong and exact at application during programs of mass immunisation thanks to the limited maximum used volume.

44 cl, 5 dwg