CN2865720Y - disposable syringe - Google Patents
disposable syringe Download PDFInfo
- Publication number
- CN2865720Y CN2865720Y CN 200620095031 CN200620095031U CN2865720Y CN 2865720 Y CN2865720 Y CN 2865720Y CN 200620095031 CN200620095031 CN 200620095031 CN 200620095031 U CN200620095031 U CN 200620095031U CN 2865720 Y CN2865720 Y CN 2865720Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- syringe
- way locking
- locking spring
- disposable syringe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004033 plastic Substances 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 abstract description 5
- 239000003814 drug Substances 0.000 abstract description 4
- 206010011409 Cross infection Diseases 0.000 abstract description 2
- 206010029803 Nosocomial infection Diseases 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 4
- 208000030507 AIDS Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 208000006454 hepatitis Diseases 0.000 description 1
- 231100000283 hepatitis Toxicity 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 208000011580 syndromic disease Diseases 0.000 description 1
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model relates to a disposable syringe, it includes urceolus, syringe needle, push rod and medical rubber piston, and medical rubber piston installs the tip at the push rod, and its characteristics are: the front part of the push rod is provided with 1-4 one-way locking springs, the outer side of each one-way locking spring is in a needle shape, the outer part of the push rod is provided with an open sliding plastic bush, after the push rod sucks liquid medicine and is pulled out outwards, the open sliding plastic bush has tension to rub with the outer cylinder to stay in the outer cylinder, when the push rod pushes the liquid medicine forwards, the one-way locking springs arranged on the push rod are outwards ejected due to the elastic action, the needle points prop against the side wall of the outer cylinder, and the push rod only can move forwards and can not move backwards, so that the syringe can be prevented from being reused to bring cross infection to treatment, and the syringe can be prevented from being recycled, repaired and reused.
Description
Technical field
This utility model relates to a kind of injector for medical purpose, particularly disposable syringe.
Technical background
Syringe is a kind of medical apparatus that is directly used in human body, therefore, very strict to its hygienic requirements, common syringe, since reusable, not thorough as sterilization, or other reason, can cause crowd's interleave spread of infection disease, particularly at present a lot of drug addicts much are the public syringes of several people, make diseases such as acquired immune deficiency syndrome (AIDS), hepatitis propagate in a large number.So some have designed the disposable syringe of dissimilar self-lockings or self-distruction structure.As 1, Chinese patent＜application number 92239993＜denomination of invention disposable syringe＜summary a kind of disposable syringe, it is made up of axle center, activity bar, little spring, Rubber end, shell, movable back-up ring etc.Owing to utilize to be loaded on the intra-annular activity bar of housing backstop and little spring matches with movable back-up ring, withstand the thinnest part of axis diameter and the level of thick part, thereby make syringe definitely not have reusable probability.2, Chinese patent＜application number〉200320122299＜denomination of invention〉disposable syringe push rod front end snap-in structure＜summary〉a kind of disposable syringe push rod front end snap-in structure, comprise syringe, push rod, plug, wherein, the syringe interior forward end is provided with a fore shaft, and front end is an injecting needle base; Push rod is a decussate texture, and front end is linked with an engaging head; One plug is sleeved on the push rod front end, and there is a bellmouth its inside; Described engaging head is a double layered cone structure, and its rear portion seat ring can embed in the plug internal tapered hole, and there is a cavity front portion, and both wings have elasticity because of being provided with cavity, is convenient to insert the syringe fore shaft and closely blocks mutually.The engaging head that push rod front end of the present utility model is provided with can reduce push rod thrust, thereby make patient reduce misery, because the lengthening of front end push rod can make the residual dose of syringe reduce to minimum, compliance with environmental protection requirements reduces the drug contamination environment more.3, Chinese patent＜application number〉200320107480＜denomination of invention〉the anti-disposable syringe＜summary of pulling back〉a kind of anti-disposable syringe of pulling back, it includes injection tube, piston and piston push-pull rod, it is characterized in that: the inwall of injection tube rear end is provided with the anti-dovetail groove of pulling back, the handle edge that pushes away at piston push-pull rod rear portion is provided with the anti-wedge of pulling back that matches with the anti-dovetail groove of pulling back, and the base of the anti-wedge of pulling back is more bigger than the less notch of the anti-dovetail groove of pulling back.
The disposable syringe of above-mentioned report, having solved substantially of having prevents the nonexpondable problem of syringe, but some disposable syringes because of not taking to take precautions against reusable structure, still can be reused artificially.The structure that has is complicated, like this, for obtaining really to play the syringe of disposable effect, must cause price, the problem of aspects such as manufacturing.
Summary of the invention
The purpose of this utility model for overcoming the deficiency of above-mentioned prior art, provides a kind of simple in structure, the disposable notes syringe that cost is low exactly.
Disposable syringe described in the utility model comprises urceolus, syringe needle, push rod and medical grade rubber piston, the medical grade rubber piston is installed in the end of push rod, be characterized in: 1-4 one-way locking spring installed in the front portion at push rod, the outside of one-way locking spring is a needle-like, and the outside of push rod is equipped with the slip plastic bushing of an opening.
Above-described disposable syringe, the front portion of push rod can be established 1-4 holddown groove, and the one-way locking spring is installed on the holddown groove with screw or pin fourth.
Above-described disposable syringe, one-way locking spring also can be directly installed on the seamed edge of push rod with screw or pin fourth.
Above-described disposable syringe, when only with 1 one-way locking spring, as long as holddown groove of design can run through the one-way locking spring push rod holddown groove, the formation diagonal angle, one-way locking spring both sides all are needle points, make like this and use also very convenient.When 2-3 one-way locking spring was installed, the one-way locking spring can be contained in a side of push rod seamed edge, did not need to run through the push rod holddown groove.
Disposable syringe described in the utility model is fixed on the one-way locking spring on the holddown groove or seamed edge of push rod with screw or pin fourth earlier when assembling, puts the slip plastic bushing again, pushes it to the front portion of syringe urceolus.The operator is pulled outwardly injector push-rod in use, drive the medical grade rubber piston and make generation vacuum suction medicinal liquid in the syringe, syringe piston rod is pulled outwardly the slip plastic bushing simultaneously, this slip plastic bushing just is brought to the other end of urceolus, the operator pushed away push rod forward and discharged syringe gas this moment, owing to self having tension force and urceolus friction, the slip plastic bushing of opening rests on urceolus, push rod continues forward, break away from the slip plastic bushing, the one-way locking spring that is installed on the push rod outwards ejects owing to having elastic reaction, form the angle of spending with the sidewall of urceolus less than 90, needle point withstands outer tube side wall, push rod can only advance and can not retreat, and shifts the end onto up to push rod, and the operator all injects medicinal liquid in the patient body, push rod also just is fixed on an end of syringe needle, because the one-way locking spring tightens, even urceolus is punctured, and can not whole syringe be scrapped.
The utility model has the advantages that: can prevent the syringe repeated use and bring cross infection to treatment, can prevent that more some lawless persons are for reaping staggering profits, usually used disposable syringe recovery reparation is added use again, and this disposable syringe is to increase several widgets on original syringe, do not change the basic structure of syringe, cost is low, and manufacturing and assembling are all very simple, and conventional injector manufacturer does not need to increase a lot of investments and just can implement.
Description of drawings
Fig. 1 is the structural representation (1 one-way locking spring) before disposable syringe uses.
Fig. 2 is the structural representation (1 one-way locking spring) after disposable syringe uses.
Fig. 3 is the structural representation (2 one-way locking springs) before disposable syringe uses.
Fig. 4 is the structural representation (2 one-way locking springs) after disposable syringe uses.
Fig. 5 is the injector push-rod structural representation.
Fig. 6 is mounted in the structural representation of the one-way locking spring of push rod.
The specific embodiment
Describe enforcement structure of the present utility model in detail below in conjunction with accompanying drawing:
As shown in the figure, this utility model disposable syringe comprises urceolus 1, syringe needle, push rod 2 and medical grade rubber piston 3, medical grade rubber piston 3 is installed in the front end of push rod 2, the front portion of push rod 2 is provided with holddown groove 7,1-4 one-way locking spring 5 is installed, be fixed on the holddown groove 7 of push rod 2 with screw 6 or pin fourth, the outside of push rod is equipped with the slip plastic bushing 4 of an opening.Use front slide plastic bushing encases the one-way locking spring 5 in the push rod 2, and push rod 2 can outwards be extracted out.After push rod 2 is outwards pulled out, the slip plastic bushing 4 of opening self has tension force and urceolus to rub and rests on urceolus 1, push rod 2 is released medicinal liquid forward, the one-way locking spring 5 that is installed on the push rod outwards ejects owing to elastic effect, form the angle of spending with the sidewall of urceolus 1 less than 90, needle point withstands urceolus 1 sidewall, and push rod 2 can only advance and can not retreat (state of Fig. 2).
Fig. 3 and Fig. 4 are that the disposable syringe that 2 one-way locking springs are installed uses the structural representation of front and back, compare with Fig. 1 and 2 figure, different structures is that injector push-rod 2 front portions are equipped with 2 one-way locking springs 5, in a side of push rod 2 seamed edges, each one-way locking spring 5 has only needle point on one side to these two one-way locking springs 5 respectively.
As shown in Figure 5, push rod 2 is basic identical with existing pusher structure, just is provided with the holddown groove 7 of one-way locking spring 5 in the front portion of push rod 2, one-way locking spring 5 can be used in screw 6 or sell fourth to be installed on the holddown groove 7.
Claims (3)
1. disposable syringe, comprise urceolus, syringe needle, push rod and medical grade rubber piston, medical grade rubber piston (3) is installed in the front end of push rod (2), it is characterized in that: 1-4 one-way locking spring (5) installed in the front portion of push rod (2), the outside of one-way locking spring (5) is a needle-like, and the outside of push rod (2) is equipped with the slip plastic bushing (4) of an opening.
2. disposable syringe according to claim 1, it is characterized in that: 1-4 holddown groove (7) can be established in the front portion of push rod (2), and one-way locking spring (5) is installed in holddown groove (7) with screw or pin fourth and goes up or be directly installed on the seamed edge of push rod (2).
3. disposable syringe according to claim 1 is characterized in that: one-way locking spring (5) can be contained in a side of push rod seamed edge, perhaps through the holddown groove of push rod seamed edge, forms the diagonal angle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620095031 CN2865720Y (en) | 2006-01-11 | 2006-01-11 | disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620095031 CN2865720Y (en) | 2006-01-11 | 2006-01-11 | disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2865720Y true CN2865720Y (en) | 2007-02-07 |
Family
ID=37701421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620095031 Expired - Fee Related CN2865720Y (en) | 2006-01-11 | 2006-01-11 | disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2865720Y (en) |
-
2006
- 2006-01-11 CN CN 200620095031 patent/CN2865720Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |