CN2776433Y

CN2776433Y - Degradation type autodestroyed injector

Info

Publication number: CN2776433Y
Application number: CN 200520081907
Authority: CN
Inventors: 冯超
Original assignee: WEIHAI SAILUTE TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Jilin Jinyuan North Technology Development Co., Ltd.
Priority date: 2005-03-24
Filing date: 2005-03-24
Publication date: 2006-05-03
Anticipated expiration: 2015-03-24

Abstract

The utility model relates to a degradation type self-destruction injector which comprises an outer sleeve made of degradation type plastics, a core rod, a piston and a needle seat, wherein the needle seat is arranged on the front end of the outer sleeve and is integrated with the outer sleeve, the piston is arranged on the front part of the core rod of which the front end is movably connected with a cylindrical clamping core, the inner top end of the outer sleeve is provided with a cylindrical clamping groove matched with the clamping core and the cylindrical surface of the cylindrical clamping groove is also provided with a liquid guiding groove. The clamping core is clamped in the clamping groove when the utility model is used for injection, the core rod is drawn and pulled, the clamping core is separated from the core rod and blocks in the clamping groove in the outer sleeve and thus the self destruction of the injector which is only used once is realized. The utility model has the advantages of simple structure, reliable connection, convenient and stable use and good safety performance.

Description

The degradation-type self-destroyed syringe

Technical field

This utility model relates to a kind of medical apparatus and instruments, specifically a kind of degradation-type self-destroyed syringe.

Background technology

We know that syringe is a kind of medical apparatus commonly used.It generally comprises syringe needle, overcoat, piston, push rod etc.In order to prevent cross infection, disposable use more and more is subject to people's attention.But present widely used disposable syringe belongs to managerial notion, is not " disposable " on the serviceability, can repeated multiple times use, and leaves hidden danger to cross infection, and propagation tends to produce the disease of.In addition, injection finishes in processing procedure subsequently, because outside syringe needle was exposed to mostly, very easily thorn scratched hospitalized patients, causes new cross infection.Patent 00205827.8 discloses a kind of self-destroy safety injector, form by syringe, needle holder, sealing ring, rubber piston and push rod, the syringe front end has cylindrical hole, needle holder is to slide and packs in the syringe cylindrical hole, realize airtight by sealing ring, the needle holder rear end is the puncture cone of band handle, be easy to wear out the rubber piston thin film region at the injection terminal point, agree with the collet of push rod front end in the piston, needle holder is drawn in the syringe together with injection needle, can be realized disposable use self-destruction like this, but complex structure, the assembling difficulty, strict to part dimension.At present, also have the card form self-destroyed syringe, it is that a card is installed on core bar, and card is provided with agnail, and thorn can only move forward at outer casing inner wall, can not pull back, and realizes that with this syringe once uses and self-destruction.

Summary of the invention

Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, and a kind of simple structure is provided, connect reliable, easy to use, stable, once use can self-destruction the degradation-type self-destroyed syringe.

The technical scheme in the invention for solving the above technical problem is: a kind of degradation-type self-destroyed syringe, it comprises overcoat, core bar, piston, needle stand that degradable plastic is made, needle stand is arranged on the overcoat front end, with the overcoat integrative-structure, piston is installed in the core bar front portion, it is characterized in that: the core bar front end flexibly connects a pyramid type the core of the card, and the top is provided with a pyramid type draw-in groove that cooperates with the core of the card in the overcoat.

This utility model core bar and the core of the card activeness are pegged graft.Also be provided with the drain groove on tapered of the pyramid type the core of the card, so that the medicinal liquid circulation during injection, is not stayed residual liquid.

This utility model is owing to be provided with the core of the card of flexible connection in the core bar front portion, the core of the card is fastened in the draw-in groove during injection, the pull core bar, and the core of the card separates with core bar, and the core of the card stays, and gets lodged in the draw-in groove in the overcoat.Realize only self-destruction of syringe with this, avoid syringe to reuse for once using.Each ingredient of this utility model is to be that raw material is made by the carbon dioxide copolymer of the not chloride element that can degrade under environmental condition or carbon dioxide copolymer and other degradable plastic coordination compounds, this product uses discarded back to be carbon dioxide and water with regard to degradable in half a year in natural environment, has avoided environmental pollution and iatrogenic pollution.This utility model simple structure connects reliably, and easy to use, stable, security performance is good.

Description of drawings

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

Fig. 1 is a structural representation of the present utility model;

1. overcoats among the figure, 2. core bar, 3. piston, 4. the core of the card, 4-1. drain groove, 5. draw-in groove, 6. needle stand.

The specific embodiment

As can be seen from Figure 1, a kind of degradation-type self-destroyed syringe of this utility model, it comprises overcoat 1, core bar 2, piston 3, needle stand 6 that degradable plastic is made, needle stand 6 is arranged on overcoat 1 front end, with overcoat 1 integrative-structure, be used for installing the connection injection needle, piston 3 is installed in core bar 2 front portions, can be driven in overcoat 1 by core bar 2 and twitch back and forth, piston 3 is better elastic bodies.Above-mentioned each ingredient is to be that raw material is made by the carbon dioxide copolymer of the not chloride element that can degrade under environmental condition or carbon dioxide copolymer and other degradable plastic coordination compounds, product uses discarded back to be carbon dioxide and water with regard to degradable in half a year in natural environment, has avoided environmental pollution and iatrogenic pollution.Above-mentioned The Nomenclature Composition and Structure of Complexes of this utility model and prior art are basic identical, are not giving unnecessary details.

Characteristics of the present utility model are: core bar 2 front ends flexibly connect a pyramid type the core of the card 4, and it can movablely be pegged graft.Be that core bar 2 front ends are provided with a connection circular groove, the core of the card 4 is provided with one and connects cylinder, the two cooperation of pegging graft.When unrestricted, the two interlock, when the core of the card 4 is restricted, the two separation.The top is provided with a pyramid type draw-in groove 5 that cooperates with the core of the card 4 in the overcoat 1.The shape of the core of the card 4 is consistent with the cavity shape of draw-in groove 5, also is provided with drain groove 4-1 on tapered of pyramid type the core of the card 4, so that the medicinal liquid circulation during injection, can reduce the residual liquid amount of injection so effectively.

When this utility model work begins, as long as core bar 2 does not push away before firmly, normal aspiration medicinal liquid just.During injection, push away before exerting oneself, the core of the card 4 is sent in the draw-in groove 5.Pull back core bar 2, the core of the card 4 separates with core bar 2, gets lodged in the draw-in groove 5, realizes the only self-destruction for once using of syringe with this, avoids syringe to reuse.This utility model simple structure connects reliable, easy to use.

Claims

1. degradation-type self-destroyed syringe, it comprises overcoat, core bar, piston, needle stand that degradable plastic is made, needle stand is arranged on the overcoat front end, with the overcoat integrative-structure, piston is installed in the core bar front portion, it is characterized in that: the core bar front end flexibly connects a pyramid type the core of the card, and the top is provided with a pyramid type draw-in groove that cooperates with the core of the card in the overcoat.

2, degradation-type self-destroyed syringe as claimed in claim 1 is characterized in that: core bar and the core of the card activeness are pegged graft.

3, degradation-type self-destroyed syringe as claimed in claim 1 is characterized in that: also be provided with the drain groove on tapered of the pyramid type the core of the card.