CN2492244Y

CN2492244Y - Once-used syringe

Info

Publication number: CN2492244Y
Application number: CN 01240167
Authority: CN
Inventors: 王自新
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-05-25
Filing date: 2001-05-25
Publication date: 2002-05-22
Anticipated expiration: 2011-05-25

Abstract

The utility model discloses a self-damaging type disposable injector comprising an injector barrel and a push rod with one end inserted into the injector barrel and the front end equipped with a piston, the barrel wall near the top portion of the injector barrel is opened with more than two tongue petals and the distances between the tongue petal and the top end of the injector barrel are more than the thickness of the piston on the top portion of the push rod that is divided into an upper and a lower portion that are connected via convex and concave engagement. The utility model has simple structure, and is automatically self-damaged after used once, thereby solving the problem that the current disposable injector is used repeatedly.

Description

A kind of re-use preventing once-used syringe

This utility model relates to a kind of medical apparatus and instruments, especially a kind of re-use preventing once-used syringe.

Disposable syringe is widely used in medical field at present, but the illegal retailer who has uses used disposable syringe for economic interests through buying private clinic's patients again after simply cleaning, in order to prevent the repeated use of disposable syringe, avoid because of using the cross infection of pathogenic bacteria that unholiness syringe causes human body, people have thought thousand and one way, a kind of is with the unified collection of used disposable syringe, doing crushing then handles, another kind is that the push rod with syringe fractures, make it and to reuse, but it is bigger that these two kinds of methods implement difficulty, need to drop into great amount of manpower, financial resources just can be finished, caused opportunity so for some illegal retailers, the reusable problem of disposable syringe is remained incessant after repeated prohibition, give that broad masses of the people are healthy to bring very big harm.

The purpose of this utility model provides a kind of simple in structure and can only expendable syringe.

The technical solution of the utility model is: a kind of self-destructed disposable is penetrated device, comprise that syringe cylinder and stretches into wherein and front end is equipped with the push rod of piston, on the barrel of syringe cylinder, have plural gate and this gate and the vertical distance of syringe cylinder thickness greater than the push rod top piston near the top, above-mentioned push rod by up and down separable two sections form, on the last body of rod cross section groove is arranged, on the following body of rod cross section projection is arranged, projection can embed in the groove with its coupling, and body of rod lock is associated in together up and down.

On the groove inwall on the above-mentioned last body of rod cross section ring-shaped depression is arranged, on the protruding outer wall on the above-mentioned body of rod cross section down plural prominent point is arranged, when the body of rod cooperated up and down, prominent point locked together with depression.

This utility model has following advantage:

1, use once the back with and scrap, thereby solve the reusable problem of disposable syringe.Since being provided with gate on the inwall of syringe cylinder the piston on the push rod be positioned at gate below, do not inhale liquid medicine so do not influence syringe, after injection process is finished, firmly make piston slip over gate a little and be in the top of syringe cylinder, the agnail of gate on fish is colluded on its wall stumbles piston at this moment, if firmly be pulled outwardly push rod this moment, will make the snap close disconnection on the push rod be divided into two-section up and down, the upper half will be stayed in the syringe cylinder forever, so just can fundamentally solve the repeated use problem of present disposable syringe.

2, since existing disposable syringe when destroying, need the cooperation supervision of each administrative department, so just need expend great amount of manpower, financial resources just can finish, if after using the syringe of this structure, when finishing injection process, syringe is scrapped thereupon, has fundamentally solved the reusable problem of disposable injection, can be country on the one hand and save a large amount of financial expenses, the healthy of broad masses of the people is protected.

Following structure drawings and Examples are described in further detail this utility model:

Fig. 1 is this utility model structural representation;

Fig. 2 is the pusher structure sketch map.

Structure of the present utility model such as Fig. 1, shown in Figure 2, comprise that injection tube 1 and stretches into wherein and front end is equipped with the push rod of piston 3, on the barrel of injection tube, have plural gate 2 near the top, and the vertical distance of this gate and syringe cylinder is greater than the thickness of push rod top piston 3, above-mentioned push rod is made of the last body of rod 4 and the following body of rod 5, one groove 6 is arranged on the cross section of the last body of rod 4, there is a projection 7 can embed in the groove 6 with its coupling on the cross section of the following body of rod 5, to go up the body of rod 4 is associated in together with the following body of rod 5 locks, firm for what the body of rod 4 and the following body of rod 5 were connected, can on the inwall of the groove 6 on the last body of rod 4 cross sections, open a ring-shaped depression 8, the outer wall of the projection 7 on the following body of rod 5 is provided with prominent point 9 more than two, when the body of rod cooperated up and down, prominent point 9 was with depression 8 snap closes.

Using method of the present utility model:

State before this utility model uses as shown in Figure 1, piston 3 is in gate 2 tops, at this moment can inhale liquid medicine with syringe, after injection finishes, firmly continue a little to advance, make piston 3 slip over gate 2 in the bottom, at this moment the agnail of gate 2 on fish is colluded stumbles piston 3 firmly and makes it can not pumpback, if be pulled outwardly push rod by force, its intermediary snap close will be disconnected, make it be divided into two parts up and down, thereby the body of rod 4 is stayed in the syringe cylinder 1 forevermore, so just can fundamentally solve the cross infection problem that the repeated use owing to disposable syringe produces, people health is protected.

Claims

1, a kind of self-destructed disposable is penetrated device, comprise that syringe cylinder and stretches into wherein and front end is equipped with the push rod of piston, it is characterized in that, on the barrel of syringe cylinder, have plural gate and this gate and the vertical distance of syringe cylinder thickness greater than the push rod top piston near the top, above-mentioned push rod by up and down separable two sections form, on the last body of rod cross section groove is arranged, on the following body of rod cross section projection is arranged, projection can embed in the groove with its coupling, and body of rod lock is associated in together up and down.

2, re-use preventing once-used syringe according to claim 1, it is characterized in that, on the groove inwall on the above-mentioned last body of rod cross section ring-shaped depression is arranged, on the protruding outer wall on the above-mentioned body of rod cross section down plural prominent point is arranged, when the body of rod cooperated up and down, prominent point locked together with depression.