CN2574695Y

CN2574695Y - Pressurized injector

Info

Publication number: CN2574695Y
Application number: CN 02219509
Authority: CN
Inventors: 许跃远
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-03-20
Filing date: 2002-03-20
Publication date: 2003-09-24
Anticipated expiration: 2012-03-20

Abstract

The utility model relates to a disposable syringe which is characterized in that a syringe needle is positioned in a needle tube; the inner side of the front end of the needle tube is provided with a chamber matched with the tail part of the syringe needle; the front end of a pushing rod is provided with an annihilation mechanism which comprises a hollow piston, a sword head, a nut sleeve and a bolt. Because the syringe needle of the utility model is positioned in the needle tube, the using safety is ensured. The syringe has reasonable structural design. Because the utility model is provided with the annihilation mechanism, after the utility model is used, the shape of the utility model can be conveniently damaged, which avoids the secondary usage, the propagation of infectious diseases, and the pollution for the environment.

Description

The environment-friendly type disposable syringe

Technical field

This utility model relates to disposable syringe.

Background technology

At present, known disposable syringe has the following disadvantages: one, injection needle separates with needle tubing, and careless manipulation needle tubing cervical region is easily polluted by finger in the use, operate relative complex simultaneously, thrust is excessive in the use, and syringe needle can be turned down, and causes the medicine waste; Two, injection needle need add packing, waste material; Three, lose immediately after the property syringe use next time of many situations in the routine work, ruin the type inconvenience, the adverse consequences that causes has several situations: 1, child plays it when toy, and the danger of hindering oneself or injuring other people is arranged, and the possibility of infected disease transmission is also arranged simultaneously; 2, after the people who picks up waste product collected disposable syringe, the person that sells the illegal practice of medicine caused secondary to use, and helps the propagation of infectious disease; 3, concentrated disappearing ruined, and will pollute and cause transmission of disease to environment.

Summary of the invention

In order to overcome the problem that disposable syringe exists in the prior art, this utility model provides a kind of conveniently disappearing to be difficult for contaminated environment-friendly type disposable syringe when ruining, using assembling.

Concrete technical solution is such:

The environment-friendly type disposable syringe comprises injection needle, needle tubing and push rod, it is characterized in that:

Injection needle is positioned at needle tubing, and needle tubing front end inboard is provided with the chamber that cooperates with the injection needle afterbody;

The push rod front end is provided with a destroyer structure, this destroyer structure comprises hollow piston, sword head, nut sleeve and bolt, and sword head, nut sleeve are located in the hollow piston successively, and the bolts and nuts cover cooperates, bolt shaft has an Assembly rail that cooperates with bolt shaft holes to an axis hole is arranged on the push rod front end face.

Described bolt shaft holes is a square opening, and the Assembly rail cross section that cooperates with square opening and prism is square.

Described needle tubing front end chamber posterior medial wall is provided with an annular groove, and the chamber end face diameter upwards is provided with groove, cooperates injection needle afterbody outer surface to be provided with a bulge loop with annular groove, and the bulge loop outside is provided with more than one projection.

Described push rod middle part radially is provided with a recessed circle.

This utility model operational pollution can not occur because injection needle is positioned at needle tubing, and the injection needle tube neck is in sealing state when dispatching from the factory when assembling in the use, has guaranteed the safety of using.This syringe construction is reasonable in design, syringe needle can not stayed the injection site when pulling out syringe needle in the use, no matter thrust is much, also can not turn down syringe needle during injection.Most importantly, this syringe is provided with the destroyer structure, can unmake easily after the use, has avoided the secondary use, has avoided the propagation of infectious disease, on the other hand, because injection needle in bobbin, has been avoided the pollution to environment.

Description of drawings

Fig. 1 is this utility model structural representation,

Fig. 2 is state diagram before using,

Fig. 3 is state diagram after using,

Fig. 4 is Fig. 3 A-A cutaway view,

Fig. 5 is an injection needle rear structure sketch map,

Fig. 6 is Fig. 5 left view,

Fig. 7 is a destroyer structure sketch map.

The specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

The environment-friendly type disposable syringe comprises injection needle 1, needle tubing 2 and push rod 3, sees Fig. 1, Fig. 2.

Injection needle 1 is positioned at needle tubing 2, and there is a chamber 4 that cooperates with injection needle 1 afterbody needle tubing 2 front end inboards; On the chamber 4 posterior medial walls annular groove 5 is arranged, the chamber end face diameter upwards has groove 6, sees Fig. 1, Fig. 4; The injection needle 1 afterbody outer surface that cooperates with annular groove 5 has a bulge loop, and the projection 7 that the bulge loop outside has two symmetrical distributions to cooperate with chamber groove 6 is seen Fig. 5, Fig. 6.

Push rod 3 front ends are equipped with a destroyer structure, see Fig. 7.This destroyer structure comprises hollow piston 8, sword head 9, nut sleeve 10 and bolt 11, sword head 9, nut sleeve 10 are loaded in the hollow piston 8 successively, bolt 11 cooperates with nut sleeve 10, bolt 11 axially has a square opening and prism, the one square Assembly rail that cooperates with bolt 11 square opening and prisms is arranged on push rod 3 front end faces, and square Assembly rail is inserted in the square opening and prism of bolt during use.Radially there is a recessed circle 12 at push rod 3 middle parts.

During use, preceding push rod 3 snaps fitted in the radial groove 6 of needle tubing forward chamber 4 annular grooves 5 end faces injection needle 1 afterbody projection 7 gently, finishes the assembling before using.

After using end, rotating push-rod 3 gently, and bolt 11 is advanced along nut sleeve 10, and promotion sword head 9 advances and punctures the top of hollow rubber piston 8, and snaps in injection needle 1 afterbody; Then pull back push rod 3, injection needle 1 is drawn in the needle tubing 2; Recessed circle 12 places of tailing edge push rod 3 with push rod 3 break off with the fingers and thumb disconnected promptly realized disappearing ruin syringe, see Fig. 3.

Claims

1, environment-friendly type disposable syringe comprises injection needle, needle tubing and push rod, it is characterized in that:

2, environment-friendly type disposable syringe according to claim 1 is characterized in that: described bolt shaft holes is a square opening, and the Assembly rail cross section that cooperates with square opening and prism is square.

3, environment-friendly type disposable syringe according to claim 1, it is characterized in that: described needle tubing front end chamber posterior medial wall is provided with an annular groove, the chamber end face diameter upwards is provided with groove, cooperate injection needle afterbody outer surface to be provided with a bulge loop with annular groove, the bulge loop outside is provided with more than one projection.

4, environment-friendly type disposable syringe according to claim 1 is characterized in that: described push rod middle part radially is provided with a recessed circle.