Abstract: The device for administering medicinal preparations comprises an isolated capsule subdivided into a chamber for a first medicinal preparation and a chamber for a second medicinal preparation. Coaxially inside said isolated capsule concentrically therewith is the piston which bounds said chamber for the first medicinal preparation. Made fast on said piston is the injection needle having the hole located at the base of said piston. Provision is made in the device for a mechanical actuator of said piston, which is a spring-opposed pushrod located inside the housing which also accommodates the retaining member for said spring-opposed pushrod. Said chamber for the second medicinal preparation is arranged concentrically with said chamber for the first medicinal preparation so as to embrace the latter. Said isolated capsule is mounted traversably inside said housing, while communication between both of said chambers is established upon a positive extension of said isolated capsule from said housing outwards.

Abstract: The device for injection of medicinal preparations, according to the invention, comprises a changeable isolated capsule, an injection needle, and a drive to move pistons, made in the form of a spring-loaded pusher located inside the housing which supports the changeable isolated capsule. The housing has a stopping member to arrest said spring-loaded pusher. Inside said isolated capsule, installed coaxially therewith and with each other are a main piston closed by a partition on the side facing the chamber holding the first medicinal preparation and an additional piston. The partition is movable. The injection needle is installed inside the isolated capsule, fixed on the additional piston, and it in use passes through said partition, and has an aperture in the zone of the partition on the side of the chamber holding the first medicinal preparation. The additional piston is located in the channel of the main piston and limits the chamber for the second medicinal preparation.