CN2838643Y

CN2838643Y - Disposable safety self-breaking injector

Info

Publication number: CN2838643Y
Application number: CN 200520116767
Authority: CN
Inventors: 江波
Original assignee: Individual
Current assignee: Li Zhiyun
Priority date: 2005-11-29
Filing date: 2005-11-29
Publication date: 2006-11-22
Anticipated expiration: 2015-11-29

Abstract

This utility model relates to disposable safety self-breaking injector, form by syringe needle (2) and sheath (1), syringe (6), piston (5) and push rod (7) thereof, needle holder (4) bottom is shaped on the cavity (4.1) of up/down perforation, is shaped on incline bench (4.11) in the lower port of cavity; Piston core (7.5) top is shaped on barb (7.4), and barb (7.4) links in incline bench (4.11) when pushing up in push rod (7) is exerted oneself.Because barb links in the low side of the incline bench of non-axial location, syringe needle can be to lopsidedness behind the indentation syringe and off-axis, even top in the push rod unintentionally, syringe needle also can not stretch out from the syringe upper end hole, guarantee and to reclaim use again to have advantages such as self-destruction is convenient, safe, reliable.

Description

Disposable safety self-breaking injector

Technical field:

This utility model belongs to medical apparatus, relates in particular to the improvement of disposable syringe.

Background technology:

Along with scientific and technological progress, traditional glass tubing syringe cylinder is substituted by plastic injector for temporary use.But used contaminated syringe owing to destroy these, hospital need change the expense human and material resources, in addition the plastics reproducible utilization, someone just purchases as waste or used plastics to hospital, profiteering dispatches from the factory for the repacking of syringe factory, very easily causes blood-borne, the serious harm health.At this problem, existing many type self-destroyed schemes occur, multiple disposable self-destructing entry needle device technical scheme is disclosed as Chinese patent, one of them is with used syringe needle indentation syringe, can prevent from subsequent processes, to stab finger and cause infectious danger, but the syringe needle of indentation still is in the axial location of syringe, and syringe needle is easy to stretch out outside the tube in transportation, processing procedure, still can cause and stab the infected danger of finger.

Summary of the invention:

To be that design is a kind of be difficult for exposing and the disposable syringe of thoroughly self-destruction, safety to syringe needle behind the used syringe needle indentation syringe the purpose of this utility model.

This utility model disposable safety self-breaking injector is made up of syringe needle and sheath, syringe, piston and push rod thereof, it is characterized in that the needle holder bottom is shaped on the cavity of up/down perforation, is shaped on incline bench in the lower port of cavity; The piston core top is shaped on barb, and this barb links in above-mentioned incline bench when pushing up in push rod is exerted oneself.

Above-mentioned barb is 2, and coupler body is outside.

Be shaped on the spacing lobe of needle holder with needle holder joint portion syringe front inner wall.

Be shaped on the anti-sheet of ruining that links to each other by thin rib in the push rod bottom that pushes away between handle and the syringe tail end, anti-ly ruin sheet bending back and push rod links.

The push rod middle part that is positioned at syringe is shaped on the folding neck.

Be shaped on the cavity of incline bench in the lower port of this utility model needle holder bottom, the piston core top is shaped on barb, after syringe is once finished using with push rod firmly in the top, extremely I haven't seen you for ages links in above-mentioned incline bench a barb; Then with the push rod post-tensioning, because barb links in the low side of the incline bench of non-axial location, syringe needle can be to lopsidedness behind the indentation syringe and off-axis, even push up in the push rod unintentionally, syringe needle can not stretch out from the syringe upper end hole yet, guarantee subsequent process can not stab the finger and can't reclaim use again.The push rod bottom that pushes away between handle and the syringe tail end is shaped on the anti-sheet of ruining that is linked to each other by thin rib, pushes away between handle and the syringe tail end owing to be stuck in when not using, make push rod can not in the top, can prevent syringe do not use before just by self-destruction, safely, reliably.

Description of drawings:

Structure principle chart when Fig. 1 does not use for this utility model embodiment;

Fig. 2 is a syringe cross section enlarged drawing among Fig. 1;

Fig. 3 is Fig. 2 vertical view;

Fig. 4 the time links state diagram for Fig. 1 embodiment finishes using with top in the push rod;

Fig. 5 is the self-destruction state diagram.

The specific embodiment:

With reference to Fig. 1, syringe needle 1 is prefabricated into one with needle holder 4, and syringe needle is with sheath 1, is shaped on the spacing lobe 6.1 of needle holder in syringe 6 front inner wall with needle holder 4 binding sites, enters in the syringe 6 with the restriction needle holder.Between needle holder 4 and syringe 6 tops cover for seat 3 is set, or sealing ring is set.Rubber piston 5 is solidly set on the piston core 7.5, and piston core 7.5 tops are shaped on 2 barbs 7.4 that coupler body is outside, and tail end and push rod 7 are made one.The cavity 4.1 that connects before and after needle holder 4 bottoms are shaped on is shaped on incline bench 4.11 in the lower port of cavity.Be shaped on the anti-sheet 7.1 of ruining that is linked to each other by thin rib 7.2 with push rod 7 rear portions between syringe 6 tail ends pushing away handle 8, anti-sheet 7.1 two ends of ruining are stuck in and push away between handle 8 and the syringe tail end, push up in the restriction push rod 7; Push rod 7 middle parts that are positioned at syringe 6 are shaped on folding neck 7.3.

With reference to Fig. 2, Fig. 3, syringe 6 front inner wall are shaped on 4 spacing lobes 6.1 of needle holder, and each lobe body thickness is identical with cover for seat 3, and the lobe body has the elasticity of plastic material.

During injection, will prevent ruining sheet 7.1 bendings earlier, its through hole 7.6 and the projection 7.9 at push rod 7 rear portions are fastened, and make it enter syringe 6 together with push rod 7; After injection finishes, push rod 7 is continued firmly interior top, 4 spacing lobes 6.1 are backed down on piston core 7.5 tops, and barb 7.4 is linked in incline bench 4.11, as shown in Figure 4.With push rod 7 post-tensionings, barb 7.4 makes syringe needle 1 indentation syringe 6 and off-axis with needle holder 4 post-tensioning together then; Then firmly push rod 7 is fractureed at syringe 6 tail end push rods folding neck 7.3 places, realize thorough self-destruction, as shown in Figure 5.

Claims

1, a kind of disposable safety self-breaking injector, form by syringe needle (2) and sheath (1), syringe (6), piston (5) and push rod (7) thereof, it is characterized in that needle holder (4) bottom is shaped on the cavity (4.1) of up/down perforation, is shaped on incline bench (4.11) in the lower port of cavity; Piston core (7.5) top is shaped on barb (7.4), and barb (7.4) links in incline bench (4.11) when pushing up in push rod (7) is exerted oneself.

2, disposable safety self-breaking injector according to claim 1 is characterized in that barb (7.4) is 2, and coupler body is outside.

3, disposable safety self-breaking injector according to claim 1 is characterized in that being shaped on the spacing lobe of needle holder (6.1) in the syringe front inner wall with the needle holder joint portion.

4, disposable safety self-breaking injector according to claim 1, it is characterized in that pushing away handle (8) and be shaped on the anti-sheet (7.1) of ruining that links to each other by thin rib (7.2), anti-ly ruin sheet (7.1) bending back and push rod (7) links with push rod (7) bottom between syringe (6) tail end.

5, disposable safety self-breaking injector according to claim 4, push rod (7) middle part that it is characterized in that being positioned at syringe (6) is shaped on folding neck (7.3).