CN2183783Y - Disposable self-damaging injector - Google Patents

Abstract

The utility model provides a dual-disposable self-damaging injector, belonging to the technical field of a medical appliance, and the utility model is composed of an injector barrel (1), an injector core rod (2) and a rubber stopper (4). The utility model is characterized in that the upper part of the injector core rod (2) is provided with a rubber stopper (4) and a puncture needle (5) connected with the rubber stopper. While in injection, people impel the injector core rod (2) to slide forward in the injector barrel (1), and then the puncture needle penetrates a thin film layer (6) to be self-damaged. If the puncture needle does not penetrate the thin film layer, the injector core rod is pulled back after injection and is broken off to be discarded artificially at the breach (3) of the double circuit arc as a kind of supplement for self-damaging. The dual-self-damaging prevents the injector from being reused to avoid cross-infection in the bacteria.

Description

Disposable self-damaging injector

A kind of injection itself have the disposable syringe of two self-destroying functions, belong to medical instruments field.

The use of disposable syringe is the effective way that prevents cross infection, and China is since the eighties enlarges the scope of application mid-term, and is existing multiple at present.Existing disposable syringe, with regard to itself structure, what have can not be with the back self-destruction, only once use with artificial way restriction, thereby the bad petty dealer of some business ethics cleans exhausted disposable syringe, pack, sell, repeated use, generation superinfection; Have plenty of itself and have self-destroying function, as retrieve the Chinese patent information database, 2 pieces of pertinent literatures are arranged, wherein one piece is Chinese patent communique invention disclosed patent on April 8th, 1992: use the once syringe of back self-destruction, applicant Chen Yanhuan, the applying date: on JIUYUE 19th, 90, application number: 90107953, be by injection tube, syringe piston, syringe piston rod is formed, its embodiment is: at the thin piece of the thin U type of syringe piston top design one, connect a dop on the thin piece of U type, in the syringe needle vestibule with the corresponding position of dop on design one bayonet socket, make dop when injection finishes, just enter bayonet socket and blocked by bayonet socket, thereby piston can not back be twitched, piston will be torn from the thin piece of U type if twitch then by force, cause syringe not reuse and self-destruction, have the effect of avoiding bacterial cross-infection.This syringe can only a self-destruction, if the self-destruction failure then loses disposable meaning.

The purpose of this utility model overcomes the problem that prior art exists with regard to being, a kind of disposable syringe that has two kinds of self-destroying functions itself is provided, and it plays double protection when preventing to reuse.

The purpose of this utility model is achieved in that

This pair of re-use preventing once-used syringe is made up of syringe cylinder 1, syringe core rod 2, rubber stopper 4, it is characterized in that: syringe core rod 2 tops have rubber stopper 4 and coupled puncture needle 5, and the middle part is two gardens arc breach 3.

The inboard at described syringe top also is provided with thin layer 6 and strengthens convex tendon 7.

This utility model destroyed type disposable syringe compared with prior art has following advantage: when injection, utilize puncture needle to wear out thin layer and realize self-destruction, also the injectable post-tensioning returns syringe core rod, for fractureing, realizes two self-destructions its pair garden arc indentation, there people.It has double protection functions, prevents to reuse, and is current comparatively perfect disposable syringe.

Fig. 1 is this utility model destroyed type disposable syringe appearance structure sketch map;

Fig. 2 is this utility model destroyed type disposable syringe internal structure sketch map;

Fig. 3 is this utility model destroyed type disposable syringe core bar 2 and two gardens arc breach 3 structural representations thereof.

Fig. 1～3rd, most preferred embodiment of the present utility model, the utility model is described in further detail below in conjunction with accompanying drawing:

Among the figure: 1, syringe cylinder 2, syringe core rod 3, two gardens arc breach 4, rubber stopper 5, puncture needle 6, thin layer 7, reinforcement convex tendon.

Press the two re-use preventing once-used syringes of this utility model that Fig. 1～3 make, during injection, pushing syringe core bar 2 is in syringe cylinder 1 slides forwards, and the puncture needle 5 on the rubber stopper 4 is along with advancing the degree of depth to wear out thin layer 6 easily.Injection finishes, and retracts syringe core rod 2, has formed one and leak through hole on the thin layer 6 of syringe cylinder 1, thereby reached self-destruction.If do not penetrate thin layer 6, can retract syringe core rod 2,3 people from place scrap for fractureing at its pair garden arc breach, replenish as a kind of of self-destruction, realize two self-destructions.

Claims (2)

1, a kind of pair of re-use preventing once-used syringe, form by syringe cylinder (1), syringe core rod (2), rubber stopper (4), it is characterized in that: syringe core rod (2) top has rubber stopper (4) and coupled puncture needle (5), and the middle part is two garden arc breach (3).

2, according to described pair of re-use preventing once-used syringe of claim 1, it is characterized in that: syringe cylinder (1) inside top is provided with strengthens convex tendon (7) and thin layer (6).

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