CN2808179Y

CN2808179Y - Safe and sterile syringe

Info

Publication number: CN2808179Y
Application number: CN 200520070788
Authority: CN
Inventors: 胡永良
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-04-15
Filing date: 2005-04-15
Publication date: 2006-08-23
Anticipated expiration: 2015-04-15

Abstract

The utility model discloses the safety asepsis injector in a kind of medical apparatus and instruments, it has the syringe needle of being made up of the needle stand of needle point and band conehead, and reading sheet, elastomer, core bar and overcoat, the front end of core bar is equipped with piston, the elastomer two ends are connected with piston with the reading sheet respectively, the opening of reservoir is enclosed within on the conehead of syringe needle, has counterbore on the conehead, the front end of overcoat has needle holder, the periphery of needle holder is fixedly connected with the needle stand fixed cover, have protruding tooth on the needle stand, protruding tooth is threaded with the female thread of needle stand fixed cover.This utility model can prevent cross infection, save material, can make syringe needle firmly in place again, can not penetrate, hurt sb.'s feelings, and overcoat be difficult for impaired, long service life.

Description

Safety asepsis injector

Technical field

This utility model relates to a kind of syringe of medical apparatus and instruments.

Background technology

Existing asepsis injector generally is used for vein, intramuscular injection, and skin test, medical procedures such as draw blood and make up a prescription, and for fear of cross infection, requires disposable use, or discarded syringe needle, or discarded whole syringe.I Chinese patent CN1354024A formerly discloses a kind of asepsis injector, it has the syringe needle of band reservoir, this syringe needle is contained in the needle holder of overcoat front end, syringe needle is disposable use, and parts such as overcoat and core bar can be used repeatedly, thereby this structure has reached purpose aseptic and that save material.But also there are following some shortcomings in said structure, and in use, if the interior hole plug of needle point or syringe needle, then when the pushing core bar, syringe needle very easily penetrates from needle holder, and needle point is easily hurted sb.'s feelings, thereby has potential safety hazard; In addition, the needle holder structure of overcoat front end is thiner, in use, is subject to the collision fracture, has influenced the service life of overcoat.

Summary of the invention

The purpose of this utility model is to provide a kind of can prevent cross infection, save material, can make again syringe needle firmly in place, can not penetrate and overcoat is difficult for impaired safety asepsis injector.

In order to achieve the above object, this utility model is by the following technical solutions: a kind of safety asepsis injector, has the syringe needle of forming by the needle stand of needle point and band conehead, and reading sheet, elastomer, core bar and overcoat, the front end of core bar is equipped with piston, the elastomer two ends are connected with piston with the reading sheet respectively, the opening of reservoir is enclosed within on the conehead of syringe needle, has counterbore on the conehead, the front end of overcoat has needle holder, the periphery of needle holder is fixedly connected with the needle stand fixed cover, has protruding tooth on the needle stand, and protruding tooth is threaded with the female thread of needle stand fixed cover.

After adopting said structure, because the periphery of needle holder is fixedly connected with the needle stand fixed cover, has protruding tooth on the needle stand, protruding tooth is threaded with the female thread of needle stand fixed cover, thereby in use, the conehead of syringe needle is inserted in the needle holder of overcoat front end, and the rotation needle stand, make the female thread engagement of protruding tooth on the needle stand and needle stand fixed cover, therefore, syringe needle just firmly links together with the needle stand fixed cover, no matter whether needle point or syringe needle endoporus stop up, when the pushing core bar, syringe needle can not penetrate or from outside put and come off, casualty accident can not take place, eliminated potential safety hazard; Also since the needle holder periphery installed the needle stand fixed cover additional, can protect needle holder effectively, make needle holder not be afraid of collision, be difficult for injured, the long service life of overcoat; This utility model adopts syringe needle to add the reservoir structure in addition, thereby syringe needle is disposable use, and overcoat is to use repeatedly, so can prevent cross infection and save material, reaches effect safe, aseptic, that save really.

Description of drawings

Fig. 1 is the structural representation of safety asepsis injector of the present utility model;

Fig. 2 is the structural representation of syringe needle in this utility model;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is the structural representation of needle stand fixed cover in this utility model;

Fig. 5 is the right view of Fig. 4;

Fig. 6 is the cutaway view of Fig. 4 along the A-A line;

Fig. 7 is the structural representation of reading sheet in this utility model;

Fig. 8 is the right view of Fig. 7.

The specific embodiment

The embodiment that provides below in conjunction with accompanying drawing is described in further detail this utility model.

As Fig. 1,2, shown in 3, safety asepsis injector of the present utility model, has the syringe needle of forming by needle point 2-1 and the needle stand 2-2 that is with conehead 2-3 2, and reading sheet 5, elastomer 6, core bar 9 and overcoat 8, the front end of core bar 9 is equipped with piston 7, elastomer 6 two ends are connected with piston 7 with reading sheet 5 respectively, the opening of reservoir 4 is enclosed within on the conehead 2-3 of syringe needle 2, has counterbore 2-2-1 on the conehead 2-3, the front end of overcoat 8 has needle holder 8-1, the periphery of needle holder 8-1 is fixedly connected with needle stand fixed cover 3, has protruding tooth 2-2-2 on the needle stand 2-2, and protruding tooth 2-2-2 is threaded with the female thread of needle stand fixed cover 3.

As shown in Figure 1, 2, 3, protruding tooth 2-2-2 is a fin, and protruding tooth 2-2-2 also can be an external screw thread.

Shown in Fig. 3,5,6, for more firmly fixed needle 2 and fast loading and unloading syringe needle 2, fin has two, and the female thread of needle stand fixed cover 3 is a double thread.Fin also can a slice, and the female thread of needle stand fixed cover 3 also can be an one start screw.

Shown in Fig. 4,6, the residual liquid that is produced when making before injection emptying does not accumulate in the needle stand fixed cover 3, causes residual liquid to flow to needle point subsequently again, pollutes needle point, causes unhygienicly, has outage 3-1 on the needle stand fixed cover 3.Like this, residual liquid in flowing into needle stand fixed cover 3 after, can from outage 3-1, flow out, can not produce and gather, residual liquid can flow to overcoat 8 one sides along needle stand fixed cover 3 peripheries.

Shown in Fig. 1,7,8, elastomer 6 is a helical spring, helical spring two ends are stuck in reading sheet 5 and piston 7 two ends, has air drain 5-1 on the reading sheet 5, the centre that can be reading sheet 5 has pore 5-2 and/or periphery that air drain 5-1 is arranged, also can adopt the centre of reading sheet 5 that a pore 5-2 is arranged as shown in Figure 8, periphery be evenly equipped with three air drain 5-1.Also be with on the needle stand 2-2 and protect point cover 1.

Elastomer 6 also can be the gum elastic cylinder.The conehead 2-3 outer wall of syringe needle 2 and needle holder 8-1 inwall preferably adopt 6: 100 tapering.Needle stand fixed cover 3 preferably adopts bonding with needle holder 8-1.

When this utility model uses, as shown in Figure 1, earlier the conehead 2-3 with syringe needle 2 inserts in the needle holder 8-1 of overcoat 8, then rotates the certain angle of syringe needle 2, and the female thread of the needle stand fixed cover 3 of fixedlying connected on protruding tooth 2-2-2 and the needle holder 8-1 on the needle stand 2-2 is meshed.Like this, syringe needle 2 just firmly links together with needle stand fixed cover 3, and the reservoir 4 that is enclosed within on the conehead 2-3 also is close to conehead 2-3 surface under the extruding of the inwall of conehead 2-3 and needle holder 8-1.At this moment can draw core bar 9 to take out liquid medicine, the dress liquid part of reservoir 4 is ploughed under in the inner chamber of overcoat 8 from the counterbore 2-2-1 of conehead 2-3 under the pull of vacuum effect, charges into liquid in the reservoir 4.After this, can push core bar 9 and carry out emptying, just can inject after the emptying, after having injected, reverse rotation needle stand 2-2 makes the protruding tooth 2-2-2 of needle stand 2-2 and the female thread of needle stand fixed cover 3 break away from engagement again, and taking-up syringe needle 2 is thrown away and got final product.

Claims

1, a kind of safety asepsis injector, has the syringe needle of forming by the needle stand (2-2) of needle point (2-1) and band conehead (2-3) (2), and reading sheet (5), elastomer (6), core bar (9) and overcoat (8), the front end of core bar (9) is equipped with piston (7), elastomer (6) two ends are connected with piston (7) with reading sheet (5) respectively, the opening of reservoir (4) is enclosed within on the conehead (2-3) of syringe needle (2), has counterbore (2-2-1) on the conehead (2-3), the front end of overcoat (8) has needle holder (8-1), it is characterized in that:

The periphery of a, needle holder (8-1) is fixedly connected with needle stand fixed cover (3),

Have protruding tooth (2-2-2) on b, the needle stand (2-2),

C, protruding tooth (2-2-2) are threaded with the female thread of needle stand fixed cover (3).

2, safety asepsis injector according to claim 1 is characterized in that: protruding tooth (2-2-2) is a fin.

3, safety asepsis injector according to claim 2 is characterized in that: fin has two, and the female thread of needle stand fixed cover (3) is a double thread.

4, according to claim 1 or 2 or 3 described safety asepsis injectors, it is characterized in that: have outage (3-1) on the needle stand fixed cover (3).

5, safety asepsis injector according to claim 4 is characterized in that: elastomer (6) is a helical spring.

6, safety asepsis injector according to claim 4 is characterized in that: elastomer (6) is the gum elastic cylinder.

7, according to claim 1 or 2 or 3 described safety asepsis injectors, it is characterized in that: the centre of reading sheet (5) has pore (5-2) and/or periphery that air drain (5-1) is arranged.

8, according to claim 1 or 2 or 3 described safety asepsis injectors, it is characterized in that: there is a pore (5-2) centre of reading sheet (5), and periphery is evenly equipped with three air drains (5-1).

9, safety asepsis injector according to claim 5 is characterized in that: the centre of reading sheet (5) has pore (5-2) and/or periphery that air drain (5-1) is arranged.

10, safety asepsis injector according to claim 5 is characterized in that: there is a pore (5-2) centre of reading sheet (5), and periphery is evenly equipped with three air drains (5-1).