SU1697836A1 - Device for mixing and introducing liquid fast self-structurizing components - Google Patents

Abstract

The invention makes it possible to improve the quality of blending of liquid fast-structured components. The needle assembly of the device is made in the form of a tube located in the injection needle, and the mixing chamber is formed by the internal cavity of the needle, free from a tube placed at a distance of 1–3 internal diameters from the needle tip. 2 Il.

Description

The invention relates to medical technology, in particular, to devices for injecting drug mixtures consisting of rapidly structured components.

A device for injection is known, comprising a housing with chambers and pistons disposed therein, a common lid fitted with a tip, channels of tip communications with chambers, shut-off elements made in the form of check valves installed in channels of tips communication with chambers.

The drawback of the device is the impossibility of injecting fast-structuring when mixing liquid components, for example, medical glue and aqueous solutions of anticancer drugs, due to clogging of the check valve and the formation of a plug of thickened composition in the needle, which makes the insertion process impossible.

The closest is a device comprising a housing, chambers with pistons, a removable head with a needle, two separate channels of which are connected to each of the chambers, respectively, a mixing chamber.

A disadvantage of the known device is the impossibility of providing a complete mixing of the adhesive composition with the solution of the drug substance. In addition, the two-channel needle of a known device is laborious to manufacture and requires individual adjustment of the junction points of the channels.

The aim of the invention is to improve the quality of mixing.

Figure 1 shows the device in section, General view; figure 2 - place I in figure 1.

The device comprises a housing 1, chambers 2 with pistons 3. The pistons 3 are connected to the rods 4. The housing 1 contains a cylinder 5 in which a guide 6 is located, the same

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with a handle 7; On the handle; 7 installed adjustable controls 8,

3, housing 1 has channels 9 as well as junctions in the pide of two inner cones 10 and 11 and an outer cone 12. Cameras 2 are fixed to housing 1 with clamps 13. The injection unit consists of tube 14 and an injection needle 15. Needle 15 is attached to the housing 1 using the cap 16. The needle 15 has a tip 17, and the tube 14 - the tip 18. At the exit, the injection unit contains a mixing chamber 19 formed by the internal volume of the needle 15 and the ends 20 and 21 respectively of the needle 15 and the tube 14.

The device works as follows.

Cameras 2 removed from housing 1 are filled with liquid components that quickly structure when mixed, while camera 2 with components that immobilize drug molecules (for example, medical adhesives MK-7M, MK-8) is installed without a tip 18 and an inner tube 14. Next, secure The chambers 2 are in the housing 1 with the help of clamps 13 (without installing the needle 15). By pushing the rod 4, the components are fed from chamber 2 until the tube 14 is completely filled. After leisorstasis appears on thorium 21 tube 14, the remains are y, dredged, without disturbing the sterile tube 14, then installing the tip 17c needle 15 and fix The cap 16 is pressed into it. By pressing the stem 4 of the chamber filled with glue, it is fed into the internal cavity of the needle 15 until it is completely filled. With the help of stops 8 provide the interaction of both rods 4 with the handle 7. After held

operations device is ready to work.

The needle 15 is inserted into the palpation region.

or radiologically detectable tumor formation and by pressing the handle 7, which transmits forces to the rods 4 and pistons m 3, the components are fed into the mixing chamber 19.

to ensure the required quality of mixing of the preparations; the length of the mixing chamber should be not less than one and not more than three internal diameters of the needle. The tube 14 and the needle 15 are interchangeable, which makes it possible to adjust the length of the chamber 19 by installing the tube 14 and the needle 15 of different lengths,

Claims (1)

The invention of the device for mixing and introduction liquid rapidly structured components, comprising a housing with channels, on which chambers with pistons, a needle assembly and a mixing chamber are fixed, which, in order to improve the quality of mixing, the needle assembly is designed as a removable injection needle mounted on the housing whose channel through one of the channels of the housing is connected to the cavity of one from the chambers, and the detachable tube, by means of a tip fixed on another chamber and placed with a gap in the injection needle, while the mixing chamber is formed by the internal cavity of the needle, free from the tube, placed at a distance of 1-3 internal diameters from the tip of the needle. 15 Yes I Schi 2 №g / Compiled by I. Kurdchenko Editor A. Kalinichenko Tehred M. Morgental Corrector N. Korol Order 4345 Circulation: Subscription VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, 4/5 Raushsk nab.