CN2486160Y - Safety seld damage disposable aseptic syringe - Google Patents

Abstract

A self-destroy disposable sterile safety syringe is formed by an outer sleeve, a core rod in the outer sleeve, a seal ring at the core rod head part, a needle connected with the outer sleeve, and a needle cover; wherein the needle base is fitted in a connection tube of the outer sleeve front part; the needle base outer wall is provided with a spring; the core rod is a hollow tube, has top end thereof provided with a bottom plug matching with the tail of the needle base. After the medicinal liquid injection is finished, the core rod bottom plug and the needle automatically retract into the core rod under the action of spring to prevent the needle from scratching skin to cause infection, and avoid reuse of the syringe.

Description

The safety self-destructing disposable sterilized syringe

This utility model relates to syringe, belongs to medical apparatus and instruments.

Syringe is the most frequently used, and also one of medical apparatus and instruments of the amount of being to use maximum is mainly used in liquid medicine injection or check blood drawing etc.In order to control iatrogenic infectious disease, avoid adverse consequencess such as cross infection in recent years, generally use disposable sterilized injector.But existing disposable sterilized syringe still remains intact after using, and this has an opportunity to take advantage of for some lawless persons, and depleted disposable syringe after using without sterilization, has been sold again after the repacking.Be on the other hand after the medical worker gives the patient infusion medicinal liquid, when transfering to syringe needle, because needle point exposes, if it is careless, draw own finger sometimes by mistake and wait skin, thereby cause infection, this especially for some easy must contact or communicable disease consequence serious.Therefore, existing disposable sterilized syringe exists the operator and accidentally injures skin and easily repeated defective such as sale use by the lawless person.

The purpose of this utility model is in order to overcome the defective that prior art exists, to provide a kind of syringe needle that prevents to scratch skin, causing infection and avoid reusable safety self-destructing disposable sterilized syringe.

The technical scheme of this utility model safety self-destructing disposable sterilized syringe is: by overcoat, core bar in the overcoat, the sealing ring of core bar head, the syringe needle that is connected with overcoat, and pinhead sleeve etc. form, it is characterized in that the forward connection tube of overcoat, the needle stand of syringe needle is installed in the connection tube of overcoat, is equipped with spring at the outer wall of needle stand, and described core bar is a hollow pipe, bottom plug is installed at top at core bar, and the core bar bottom plug matches with the afterbody of needle seat.

Safety self-destructing disposable sterilized syringe of the present utility model is characterized in that the syringe needle packing ring is installed in the connection tube of overcoat, and the inwall of packing ring matches with the bulge loop of needle seat.

Safety self-destructing disposable sterilized syringe of the present utility model, the prosopyle that it is characterized in that the overcoat connection tube are to shrink back-up ring, and two of spring withstands on respectively on the bulge loop that shrinks back-up ring and needle seat.

Safety self-destructing disposable sterilized syringe of the present utility model is installed the core bar screw plug in the hollow pipe tail mouth of its core bar.

Safety self-destructing disposable sterilized syringe of the present utility model, the afterbody of its overcoat are shaped on hides the core pipe, hides the core pipe and matches with the afterbody of core bar, makes in core bar is hidden in wherein.

The utility model discloses the improvement design of disposable sterilized syringe, compared with the prior art, have following characteristics: the one, the needle stand of syringe needle is installed in the connection tube of overcoat, core bar is again a hollow pipe, bottom plug is installed on the top of core bar, when liquid medicine injection finishes, the afterbody of the straight thimble scalp acupuncture of core bar bottom plug seat makes the needle stand of syringe needle and the cooperation place in the overcoat connection tube loosening on the one hand, and bottom plug is pressed in the core bar on the other hand, at this moment, whole syringe needle is under the effect of spring force, in the automatic immediately indentation core bar, so syringe can't be reused, needle point does not expose, and avoids syringe needle to scratch accidental injurys such as skin fully.The 2nd, after syringe needle was installed, spring was compressed in respectively between the bulge loop of prosopyle back-up ring and needle seat, and just in time promoted on bulge loop after becoming flexible, and syringe needle is connected in the overcoat connection tube, and is reasonable in design, compact conformation, and self-destruction is reliable for effect.The 3rd, the bottom plug, syringe needle and the spring that enter in the core bar are kept off in core bar by the core bar screw plug, and whole core bar is all hidden in the overcoat again, and volume-diminished helps focusing on.The 4th, the automatic indentation core bar of syringe needle was interior and stuck with overcoat after core bar was shifted the end onto, can't reuse.

Fig. 1 is this utility model safety self-destructing disposable sterilized syringe organigram;

Fig. 2 is the overcoat cross-sectional schematic;

Fig. 3 is the core bar cross-sectional schematic;

Fig. 4 is a core bar external form sketch map;

Fig. 5 is the needle head structure sketch map;

Fig. 6 is the spring sketch map;

Fig. 7 is a syringe needle packing ring sketch map;

Fig. 8 is a core bar bottom plug sketch map;

Fig. 9 is a core bar screw plug sketch map.

Below in conjunction with Fig. 1-Fig. 9 embodiment of the present utility model is done detailed explanation.

This utility model relates to a kind of safety self-destructing disposable sterilized syringe, and an overcoat 4 is arranged as shown in Figure 1, the core bar 5 in the overcoat, and the sealing ring 8 of core bar head, the syringe needle 2 that is connected with overcoat, and institute such as pinhead sleeve 1 forms.Above-mentioned basic structure and prior art are approximate, are that mainly concrete structure form is different and have added some parts in addition.Its overcoat 4 as shown in Figure 2, the front portion is a connection tube 42, prosopyle is to shrink back-up ring 41, afterbody is shaped on big mouthful Tibetan core barrel 44, and hand-held plate 43 is arranged outward, outer wall has graduation mark 7.Needle head structure is divided into shank 21 and needle stand 22 two parts as shown in Figure 5, and the needle stand afterbody has bulge loop 23 outward, and one of important feature is that the needle stand 22 of syringe needle 2 is installed in the connection tube 42 of overcoat 4, is equipped with spring 10 at the outer wall of needle stand 22.Described core bar 5 is characterized in that core bar is a hollow pipe 51 as shown in Figure 3, Figure 4, on the top of core bar 5 bottom plug 9 is installed, and core bar bottom plug 9 matches with the afterbody of needle seat 22.Be positioned on for the needle stand 22 that helps syringe needle 2 in the connection tube 42 of overcoat 4, so syringe needle packing ring 3 is arranged in connection tube, the inwall of packing ring 3 matches with the bulge loop 23 of needle seat 22, and a crown of spring 10 is on the contraction back-up ring 41 of overcoat, and the other end withstands on the bulge loop 23 of needle stand.When liquid medicine injection finishes, the afterbody of core bar bottom plug 9 straight thimble head 2 needle stands 22, make syringe needle 2 loosening with overcoat 4 and syringe needle packing ring 3 each cooperation place, core bar bottom plug 9 is pressed in the core bar 5 on the other hand, this moment, whole syringe needle 2 was under the effect of spring 10 power, in the automatic indentation core bar of syringe needle, needle point does not expose, and prevents that syringe needle from scratching skin and causing infection; And syringe is avoided reusing.The bottom plug 9, syringe needle 2 and the spring 10 that enter in the core bar 5 are blocked by the core bar screw plug 6 of tail mouth, and core bar comprises that afterbody 52 also enters in the Tibetan core pipe 44 of overcoat 4.

Claims (5)

1, safety self-destructing disposable sterilized syringe, by overcoat, core bar in the overcoat, the sealing ring of core bar head, the syringe needle that is connected with overcoat, and pinhead sleeve is formed, it is characterized in that the forward connection tube of overcoat (1) (42), the needle stand of syringe needle (22) is installed in the connection tube (42) of overcoat, outer wall at needle stand (22) is equipped with spring (10), described core bar (5) is a hollow pipe, on the top of core bar (5) bottom plug (9) is installed, and core bar bottom plug (9) matches with the afterbody of needle seat (22).

2, safety self-destructing disposable sterilized syringe as claimed in claim 1 is characterized in that syringe needle packing ring (3) is installed in the connection tube (42) of overcoat, and the inwall of packing ring (3) matches with the bulge loop (23) of needle seat (22).

3, safety self-destructing disposable sterilized syringe as claimed in claim 1, the prosopyle that it is characterized in that overcoat connection tube (42) are to shrink back-up ring (41), and two of spring (10) withstands on respectively on the bulge loop (23) that shrinks back-up ring (41) and needle seat.

4, safety self-destructing disposable sterilized syringe as claimed in claim 1 is characterized in that installing in the hollow pipe tail mouth of core bar (5) core bar screw plug (6).

5, safety self-destructing disposable sterilized syringe as claimed in claim 1 is characterized in that the afterbody of overcoat (4) is shaped on Tibetan core pipe (44), hides core pipe (4) and matches with the afterbody (52) of core bar (5).

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