CN2661215Y

CN2661215Y - Self damage disposable aseptic syringe

Info

Publication number: CN2661215Y
Application number: CN 03264656
Authority: CN
Inventors: 李成春; 袁淑敏; 高连奇
Original assignee: BEIJING CHANGCHUAN MEDICAL TECHNOLOGY Co Ltd
Current assignee: BEIJING CHANGCHUAN MEDICAL TECHNOLOGY Co Ltd
Priority date: 2003-06-20
Filing date: 2003-06-20
Publication date: 2004-12-08
Anticipated expiration: 2013-06-20

Abstract

The utility model provides an automatic disable disposable sterilized syringe and pertains to a disposable sterilized medical device, and suits for injecting the liquid medicine in medical institution and research laboratories. The utility model comprises a syringe formed by assembling a syringe casing, a core bar and a rubber plug. The top end of the core bar of the syringe is provided with a puncture needle. The rubber plug has two cavities, one of which is used for fixing the front end of the core bar when assembling f the core bar and the other of which is used for containing the puncture needle. The center of the top end of the casing is provided with a circular thin wall region. When the injection is finished, the resistance of the top end of the casing is greater than that of the medicine solution after the rubber plug is pushed to the top end of the casing, the pushing force of the core bar is increased and the rubber plug is deformed, and the top end of the core bar is accessed into the second cavity from the first cavity, the top end of the rubber plug is punctured by the hidden puncture needle and the circular thin-wall region of the casing is also punctured. The casing and the rubber plug are all punctured and the syringe is automatically damaged.

Description

Self-destructed disposable uses asepsis injector

Technical field

This utility model self-destructed disposable uses asepsis injector, belongs to disposable use aseptic medical equipment, uses when making liquid medicine injection for medical institutions and scientific experiment unit.

Background technology

Disposable sterilized syringe is the medical apparatus and instruments that State Food and Drug Administration keeps under strict control, it reuse will the serious harm people life and health, and some self-destruction syringes of development exist following defective at present: 1, the plug of syringe can not arrive zero line before use, and plug is once arriving the self-destruction of zero line syringe; 2, can only local self-destruction after syringe uses, changing individual part after the self-destruction can reuse; 3, complex structure, manufacturing cost height.These self-destruction syringes uses are inconvenient for this reason, price is high, and it is difficult to promote the use of.The purpose of this utility model is to design a kind of novel self-destructed disposable to use asepsis injector, solve the deficiency of above-mentioned self-destruction syringe, release a kind of easy to usely, syringe can not reuse and easily manufactured, with low cost, the suitable self-destruction syringe of promoting the use of after the self-destruction.

Summary of the invention

After existing disposable syringe uses, have reusable may, for can't reusable purpose after reaching syringe and using, this utility model provides a kind of self-destruction syringe, this syringe gets final product automatically damaging shape through after once using, and reaching can't reusable purpose.

The technical scheme that its technical problem that solves this utility model adopts is: fitted together by syringe jacket, core bar, plug and form syringe.The broken pin of one root thorn is housed on the syringe core rod top, and plug has two inner chambers, fixedly core bar front end use during an assembling core bar, and another holds and punctures pin usefulness, at center, overcoat top one circular thin-wall regions is arranged.When injection begin and injection process in, before plug is not shifted the overcoat top onto, fix the core bar front end by first inner chamber of plug inner chamber, keep the core bar and plug position and the shape invariance that assemble, the promotion medicinal liquid is injected.After injection end, plug are shifted the overcoat top onto, overcoat top resistance ratios medicinal liquid resistance is big, core bar thrust strengthens, the plug distortion, the core bar top enters second inner chamber by first inner chamber of plug, the plug top is broken in the built-in acupuncture that punctures, and continues to puncture the circular thin-wall regions of overcoat, and overcoat and plug all are punctured like this.This syringe automatically damaging shape can't be reused again.

The beneficial effects of the utility model are that automatically damaging shape after using can't be reused again.

Description of drawings

Below in conjunction with accompanying drawing this utility model is further specified.

Fig. 1 is the structural representation that the self-destructed disposable in the injection process uses asepsis injector.

Fig. 2 is the structural representation that the self-destructed disposable after injection finishes uses asepsis injector.

Fig. 3 is the overcoat that self-destructed disposable uses asepsis injector.

Fig. 4 is the core bar that self-destructed disposable uses asepsis injector.

Fig. 5 is the plug that self-destructed disposable uses asepsis injector.

The circular thin-wall regions in 1. overcoat tops among the figure, 2. overcoat, 3. overcoat top, 4. plug 5. punctures pin, 6. core bar top, 7. core bar, 8. core bar is pressed hands, 9. first inner chamber of plug, 10. second inner chamber of plug.

The specific embodiment

During assembling, in Fig. 1, will puncture pin (5) and be installed on the core bar top (6), first inner chamber of plug (9) with plug (4) is inserted in core bar top (6) again, after plug (4) assembles with core bar (7), in the overcoat of packing into (2).

Before injection, earlier the plug (4) that fits together is pulled out to certain position with core bar (7) from overcoat (2), extract medicinal liquid, begin to carry out intramuscular injection after exhausting medicinal liquid.In the injection process, in Fig. 1, promote core bar and advance simultaneously with core bar (7) by the plug (4) that first inner chamber of plug (9) and core bar top (6) are fixed together, promote injecting liquid drug by hands (8).

When injection finishes, in Fig. 2, plug (4) arrives overcoat top (3), the resistance on overcoat top (3) is greater than the resistance of medicinal liquid, when continuation promotion core bar is pressed hands (8), thrust is during greater than the strength of first inner chamber of plug (9) fixed core masthead end (6), core bar top (6) enters second inner chamber of plug (10) from first inner chamber of plug (9), the top that pin (5) is worn out plug (4) that punctures of assembling is gone up on core bar top (6), continues to puncture the circular thin-wall regions (1) in overcoat top, causes the syringe leakage, gas leakage, once more during pull core bar (7), can't aspirate medicinal liquid, reach the syringe automatically damaging shape, can't reusable purpose.

Claims

A kind of self-destructed disposable uses asepsis injector, it is fitted together by syringe jacket, core bar, plug and forms syringe, it is characterized in that: the broken pin of a root thorn is housed on the syringe core rod top, plug has two inner chambers, during an assembling core bar fixedly the core bar front end use, another holds and punctures pin usefulness, at center, overcoat top one circular thin-wall regions is arranged, plug top and the circular thin-wall regions of overcoat, this syringe automatically damaging shape are broken in the built-in acupuncture that punctures.