CN2357746Y

CN2357746Y - Disposable injector capable of preventing reuse

Info

Publication number: CN2357746Y
Application number: CN 99200771
Authority: CN
Inventors: 郑鉴; 杨永恒; 陈杰; 路祖兴
Original assignee: 郑鉴
Priority date: 1999-01-21
Filing date: 1999-01-21
Publication date: 2000-01-12
Anticipated expiration: 2009-01-21

Abstract

The utility model relates to a disposable injector capable of preventing reuse, which is composed of a casing pipe and a push rod. The utility model is characterized in that one side of the position between the upper end of the casing pipe and a connecting handle is provided with a section of triangular cavity, and the corresponding side is provided with a concave cavity; the upper end of the triangular cavity forms an inner blocking mouth, and the handle is provided with a groove at the point of a pipe mouth; two corresponding fin sheets of four fin sheets of the push rod are respectively provided with a convex barrier sheet and an inverse hanging elastic barrier sheet with an opening. After the utility model is used, the triangular inverse hanging elastic barrier sheet enters the triangular cavity, and is blocked by the blocking mouth so that the triangular inverse hanging elastic barrier sheet can be locked and destroyed without retracting any more. The utility model has the advantages of simple structure, convenient use, capability of preventing the injector from being reused, and self-destruction after used.

Description

Anti-reusable disposable syringe

This utility model relates to the medical apparatus technical field.

At present, the disposable syringe that uses on the market, owing to after once, can not damage voluntarily, can be repeated to use, as the conditions for sterilization imperfection, secondary use meeting has great harm to the patient, the lighter causes the pathogenic bacteria cross infection, weight person understands life-threatening safety, and therefore, the product of being badly in need of a kind of safety precaution updates.

The purpose of this utility model provides and a kind ofly prevents to reuse, type self-destroyed disposable syringe.

For achieving the above object, this utility model is taked following design:

A kind of anti-reusable disposable syringe is made up of display pipe and push rod, and there is tube head the lower end of display pipe, and the display pipe upper end is connected with handle-bar grip; There is the mouth of pipe at the handle-bar grip middle part; The lower end of push rod is connected to the rubber seal head, the shaft of push rod is interconnected to constitute cross by coaxial four fins, the top of push rod is provided with push-plate, it is characterized in that: the upper end of display pipe be connected that position one side is provided with one section triangular shape cavity between the handle-bar grip, corresponding opposite side is provided with cavity, form inner block in triangular shape cavity upper end, be provided with a groove at the mouth of pipe place of handle-bar grip, this groove communicates with cavity; On on four fins of push rod corresponding two, be respectively equipped with the barrier sheet and the reversal of the natural order of things opening elastic block piece of protrusion.

The utility model is described in further detail below in conjunction with accompanying drawing.

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

Fig. 2 is the pusher structure sketch map

Fig. 3 looks sketch map for Fig. 2 left side

Fig. 4 is the handle-bar grip sketch map

Fig. 5 is a push rod A-A schematic cross-section

Referring to Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, a kind of anti-reusable disposable syringe is made up of display pipe 1 and push rod 3, and there is tube head 14 lower end of display pipe 1, and display pipe 1 upper end is connected with handle-bar grip 7; There is the mouth of pipe 13 at the handle-bar grip middle part, the lower end of push rod 3 is connected to rubber seal 2, the shaft of push rod 2 is interconnected to constitute cross by coaxial four fins 12, the top of push rod 3 is provided with push-plate 8, the upper end of display pipe 1 be connected that position one side is provided with one section triangular shape cavity 5 between the handle-bar grip 3, corresponding opposite side is provided with cavity 11, forms inner block 6 in triangular shape cavity 5 upper ends, the mouth of pipe 13 places at handle-bar grip are provided with a groove 10, and this groove 10 communicates with cavity 11; On on four fins of push rod 3 corresponding two, be respectively equipped with the barrier sheet 9 and the reversal of the natural order of things opening elastic block piece 4 of protrusion.

During use, have the push rod 3 of 4 wings, when coming directly towards in the propelling display pipe 1, putting back-end has triangular form reversal of the natural order of things opening elastic block piece 4, also enters into simultaneously in the triangular shape cavity 5, is kept off mouth 6 and blocks, and it can't be taken out again withdraw from, and by locked subscription rate.

Maloperation causes push rod 3 by locked in order only to put, and is provided with the barrier sheet 9 of protrusion on a fin 12 of push rod 3, before reversal of the natural order of things opening elastic block piece 4 does not advance in the shell triangular shape cavity 5, is blocked on the plane inlet pipe mouth 13 of shell handle-bar grip 3; For all being injected, medicinal liquid finishes, push rod 3 must be advanced the top of display pipe 1, this moment is as long as screw certain angle arbitrarily with push rod 3, barrier sheet 9 is aimed at the groove 10 at mouth of pipe place, the barrier sheet 9 of protrusion is entered in groove 10 and the cavity 11, can finish that elastic block piece 4 is stuck in the triangular shape cavity 5.

The utility model has the advantages that simple in structure, easy to use, can prevent syringe reuse, with finish from Row disappears and ruins.

Claims

1, a kind of anti-reusable disposable syringe is made up of display pipe (1) and push rod (3), and there is tube head (14) lower end of display pipe (1), and display pipe (1) upper end is connected with handle-bar grip (7); There is the mouth of pipe (13) at the handle-bar grip middle part, the lower end of push rod (3) is connected to rubber seal head (2), the shaft of push rod (2) is interconnected to constitute cross by coaxial four fins (12), the top of push rod (3) is provided with push-plate (8), it is characterized in that: the upper end of display pipe (1) be connected that position one side is provided with one section triangular shape cavity (5) between the handle-bar grip (3), corresponding opposite side is provided with cavity (11), form inner block (6) in triangular shape cavity (5) upper end, the mouth of pipe (13) at handle-bar grip locates to be provided with a groove (10), and this groove (10) communicates with cavity (11); On on four fins of push rod (3) corresponding two, be respectively equipped with the barrier sheet (9) and the reversal of the natural order of things opening elastic block piece (4) of protrusion.