SU1168258A1 - Injector - Google Patents

Abstract

INJECTOR, comprising a housing, a drive mechanism, a container with a drug and an injection needle, characterized in that, in order to reduce tissue trauma, the drive mechanism is made in the form of a toothed sector connected to the injection needle, a rack mounted to interact with the return spring and the toothed sector, and the injection needle is filled along the curve of the needle movement. sl od 00 th SP 00

Description

The invention relates to medicine, in particular to devices for remote automatic administration of medicinal substances.

The aim of the invention is to reduce tissue trauma.

FIG. 1 shows the proposed device in the initial position, a general view; in fig. 2 is a section A-A in FIG. 1} in FIG. 3 a device in the working position, a general view; FIG. 4, section BB, FIG. 3; in fig. 5 installation of the device on the human body and connection with the control unit 5 in FIG. 6 - figurnal plate pusher with a timing diagram of the operation of the injector.

The needle injector consists of a housing 1 with protrusions 2 and a cover 3, inside the housing 1 a pusher 4 is installed with a figured bar 5 and a holder 6, a spring 7 cooperating with the end wall of the body 1 at one end, and another amp with a pusher D. 8 with a piston 9 and a stopper 10. A needle 11 with a toothed sector 12 is connected with a toothed rack 13 and a return spring 14 and is mounted in racks 15. In the compressed state, the spring 7 is held by a pusher 4 connected to the housing 1 with a nylon thread 16, a passage through the coil 17 having a connector 18. The housing 1 is attached to the body by means of the straps 19 associated with the projections 2, and connected to the control unit 20 by means of the connector 18, the FIGURE 5 has an inclined plane 21, a depression 22 and a projection 23.

The injector works as follows.

The injector is attached to the operator's body at the right place with the help of straps 19 associated with the projections 2 of the housing 1, and is connected via connector 18 to the control unit 20.

When a signal is received from the control unit 20, the coil 17 is tensed and burns through the nylon thread 16, as a result of which the pusher 4 begins to move under the action of the spring 7. Moving the pusher 4 forward simultaneously rotates the needle 11 in the racks 15 by rotating the toothed sector 12 connected with a rack bar 13 moving under the action of the inclined plane 21 of the shaped bar 5 connected to the pusher 4, and the needle 11 piercing the plug 10 installed in the piston 9 by moving the ampoule 8 connected by the holder 6 seconds Telem 4. After the piston 9 abuts against the rack 15, under the action of the pusher 4 starts moving the cartridge 8 relative to the fixed piston 9, occurs administering drugs. The holding of the needle 11 in the body occurs due to the fact that the rack and pinion 13 constantly rests against the protrusion 23 of the figured strip 5. When the bottom of the ampoule 8 of the piston 9 reaches, the needle 11 returns to its original position under the action of the return spring 14, which moves the rack 13, interacting with jagged sector 12, in the cavity 22 on the figured strip 5.

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Claims (1)

An INJECTOR comprising a housing, a drive mechanism, a container with a drug and an injection needle, characterized in that, in order to reduce tissue trauma, the drive mechanism is made in the form of a gear sector connected to the injection needle, a gear rack, which is installed with the possibility of interaction with the return spring and the gear sector, and the injection needle is made along the curve of the trajectory of the needle. 13 12 Figure 1 00 KZ SP 1 1168258 2