DRUG DELIVERY DEVICE FOR INTRODUCTION OF PRESET DRUG DOSE

摘要

FIELD: medical equipment.;SUBSTANCE: invention relates to medical equipment, namely to drug delivery devices, namely to injection devices, such as injection device in form of a syringe-handles, for introduction of preset dose of liquid drug. Drug delivery device for introduction of preset dose of drug comprises casing housing actuator, cartridge holder, housing cartridge with piston, able to slide in longitudinal direction, and interconnection between cartridge holder and casing. Said interconnection has at least one moving or elastically deforming shutoff element for connection with appropriate support. Shutoff element can move or deform in direction extending parallel to circular side wall of casing or cartridge holder. Cartridge holder and casing contain inserted part and corresponding receiving part to establish at least partially laid connection between cartridge holder and casing. Receiving part includes at least one support, extending in lateral plane in relation to tubular form of holder and/or casing. Support includes at least one axial through hole to receive shutoff element and extends radially inward from sidewall section facing inside receiving part.;EFFECT: invention provides strong, reliable and mechanically stable interconnection of cartridge holder and casing.;7 cl, 7 dwg