CN2794530Y - Disposable injector - Google Patents
Disposable injector Download PDFInfo
- Publication number
- CN2794530Y CN2794530Y CN 200520080077 CN200520080077U CN2794530Y CN 2794530 Y CN2794530 Y CN 2794530Y CN 200520080077 CN200520080077 CN 200520080077 CN 200520080077 U CN200520080077 U CN 200520080077U CN 2794530 Y CN2794530 Y CN 2794530Y
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- CN
- China
- Prior art keywords
- pulling back
- model
- utility
- pull
- piston
- 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
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- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses a disposable injector which comprises an injection cylinder, a piston and a push and pull rod of the piston. The utility model is characterized in that the inner wall of the back end of the injection cylinder is provided with an anti-back-pull trapezoidal groove, the edge of a push handle at the back part of the push and pull rod of the piston is provided with an anti-back-pull wedge-shaped block matched with the anti-back-pull trapezoidal groove, and the bottom edge of the anti-back-pull wedge-shaped block is a bit bigger than a smaller groove opening of the anti-back-pull trapezoidal groove. The utility model has the advantages of simple structure, easy manufacture, low price, convenient operation, etc. The utility model can realize disposable use in real meanings, and completely avoid the cross infection of viruses.
Description
Technical field this utility model relates to a kind of syringe, particularly a kind of disposable syringe.
The existing disposable syringe of technical background generally is made up of syringe, piston and piston push-pull rod.Because the inwall of the injection tube of this syringe is complete flatness with piston push-pull rod and is connected, cause piston push-pull rod in injection tube, can repeatedly fully move around, thereby can not realize truly disposable use, so, some lawless persons in the society are reclaimed it, after simple process, come into the market again, certainly will increase the chance of disease propagation, particularly those drug addicts or illegal practice of medicine person, they utilize these syringes repeatedly to use each other, cause the infection of pathogenic bacteria, or even the infection of hepatitis B virus and HIV (human immunodeficiency virus), increased social harm.
The summary of the invention the purpose of this utility model provide a kind of simple in structure, make and disposable syringe easy to use easily, it can only disposable use injection, can effectively avoid the infection of virus.
The purpose of this utility model is to realize like this, it comprises 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.
Different with the prior art syringe is, piston push-pull rod of the present utility model is shorter, to such an extent as to can make the anti-wedge of pulling back that pushes away on the handle edge at piston push-pull rod rear portion can pass the anti-dovetail groove of pulling back, and make the anti-dovetail groove of pulling back carry out spacing to the anti-wedge of pulling back.
This utility model is work like this: the nurse is when injecting to patient, in case when all injecting in the patient body medicinal liquid in the injection tube, just will inevitably pass the anti-wedge of pulling back that pushes away on the handle edge at piston push-pull rod rear portion along the anti-dovetail groove of pulling back, because the anti-wedge base of pulling back is slightly larger than the less notch of the anti-dovetail groove of pulling back, make the anti-dovetail groove of pulling back carry out spacing to the anti-wedge of pulling back, prevent pulling back of piston push-pull rod, thereby realized disposable use truly.When the nurse carries out preparating liquid with this utility model, sucking or releasing in the medicinal liquid process, do not pass the anti-dovetail groove of pulling back as long as note the anti-wedge of pulling back, piston push-pull rod still can move around in injection tube, does not influence the original normal running of nurse.
The utlity model has simple in structure, easy manufacturing, low price and advantage such as easy to use, it can realize disposable use truly, has avoided viral cross infection fully.
Description of drawings Fig. 1 is this utility model structural representation;
Fig. 2 is the structural representation of this utility model injection tube.
Among the figure: 1, injection tube 2, piston 3, piston push-pull rod 4, the anti-dovetail groove 5 of pulling back, push away handle 6, the anti-wedge of pulling back
Specific embodiment this utility model disposable syringe, comprise injection tube 1, piston 2 and piston push-pull rod 3, the inwall of injection tube 1 rear end is provided with the anti-dovetail groove 4 of pulling back, handle 5 edges that push away at piston push-pull rod 3 rear portions are provided with the anti-wedge 6 of pulling back that matches with the anti-dovetail groove 4 of pulling back, and the base of the anti-wedge 6 of pulling back is more bigger than the less notch of the anti-dovetail groove of pulling back.This utility model is work like this: the nurse is when injecting to patient, in case all inject in the patient body medicinal liquid in the injection tube 1, the inevitable anti-wedge 6 of pulling back that pushes away on handle 5 edges piston push-pull rod 3 rear portions passes along the anti-dovetail groove 4 of pulling back, because anti-wedge 6 bases of pulling back are slightly larger than the anti-dovetail groove 4 less notches of pulling back, make the anti-4 pairs of anti-wedges 6 of pulling back of dovetail groove of pulling back carry out spacing, prevent pulling back of piston push-pull rod 3, thereby realize disposable use truly.When the nurse carries out preparating liquid with this utility model, sucking or releasing in the medicinal liquid process, do not pass the anti-dovetail groove 4 of pulling back as long as note the anti-wedge 6 of pulling back, piston push-pull rod 3 still can move around in injection tube 1, does not influence the original normal running of nurse.
Claims (1)
1, a kind of disposable syringe, comprise injection tube (1), piston (2) and piston push-pull rod (3), it is characterized in that: the inwall of injection tube (1) rear end is provided with the anti-dovetail groove (4) of pulling back, handle (5) edge that pushes away at piston push-pull rod (3) rear portion is provided with the anti-wedge of pulling back (6) that matches with the anti-dovetail groove (4) of pulling back, and the base of the anti-wedge (6) of pulling back is more bigger than the less notch of the anti-dovetail groove of pulling back.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080077 CN2794530Y (en) | 2005-01-20 | 2005-01-20 | Disposable injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520080077 CN2794530Y (en) | 2005-01-20 | 2005-01-20 | Disposable injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2794530Y true CN2794530Y (en) | 2006-07-12 |
Family
ID=36812297
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520080077 Expired - Fee Related CN2794530Y (en) | 2005-01-20 | 2005-01-20 | Disposable injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2794530Y (en) |
-
2005
- 2005-01-20 CN CN 200520080077 patent/CN2794530Y/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 |