CN2680276Y - Disposable syringe against draw-back - Google Patents
Disposable syringe against draw-back Download PDFInfo
- Publication number
- CN2680276Y CN2680276Y CN 200320107480 CN200320107480U CN2680276Y CN 2680276 Y CN2680276 Y CN 2680276Y CN 200320107480 CN200320107480 CN 200320107480 CN 200320107480 U CN200320107480 U CN 200320107480U CN 2680276 Y CN2680276 Y CN 2680276Y
- Authority
- CN
- China
- Prior art keywords
- pulling back
- pull
- piston
- pull rod
- model
- 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
Landscapes
- Infusion, Injection, And Reservoir Apparatuses (AREA)
Abstract
The utility model discloses an anti-back-pull disposable injector which comprises an injection cylinder, a piston and a push and pull rod of a piston. The utility model is characterized in that the inner wall at the back end of the injection cylinder is provided with an anti-back-pull trapezoid groove, the edge of a push handle at the back part of the push and pull rod of a piston is provided with an anti-back-pull wedge block matched with the anti-back-pull trapezoid groove, and the bottom edge of the anti-back-pull wedge block is a bit bigger than a smaller groove opening of the anti-back-pull trapezoid groove. The utility model has the advantages of simple structure, easy manufacture, low price, convenient operation, etc., can realize disposable operation from real meaning, and completely avoids the cross infection of viruses.
Description
Technical field: this utility model relates to a kind of syringe, particularly a kind of disposable syringe.
Technical background: existing disposable syringe 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.
Summary of the invention: the purpose of this utility model just provide a kind of simple in structure, make and the anti-disposable syringe of pulling back easy to use easily, it can only disposablely be injected, and avoids the infection of virus.
The purpose of this utility model is to realize by such technical scheme, 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.
Different with existing 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 all inject in the patient body medicinal liquid in the injection tube, the inevitable anti-wedge of pulling back that pushes away on the handle edge the piston push-pull rod rear portion passes along the anti-dovetail groove of pulling back, the wedge base is slightly larger than the less notch of the dovetail groove of preventing pulling back owing to prevent 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 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 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 injection tube.
Among the figure: 1, injection tube; 2, piston; 3, piston push-pull rod; The 4 anti-dovetail grooves of pulling back; 5, push away handle; 6, the anti-wedge of pulling back.
The specific embodiment: this utility model disposable syringe, include 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 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 shape 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 anti-disposable syringe of pulling back, include 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 200320107480 CN2680276Y (en) | 2003-12-08 | 2003-12-08 | Disposable syringe against draw-back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320107480 CN2680276Y (en) | 2003-12-08 | 2003-12-08 | Disposable syringe against draw-back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2680276Y true CN2680276Y (en) | 2005-02-23 |
Family
ID=34599275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320107480 Expired - Fee Related CN2680276Y (en) | 2003-12-08 | 2003-12-08 | Disposable syringe against draw-back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2680276Y (en) |
-
2003
- 2003-12-08 CN CN 200320107480 patent/CN2680276Y/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2860501Y (en) | Disposable syringe | |
| CN2680276Y (en) | Disposable syringe against draw-back | |
| CN2678666Y (en) | Disposable self-destroying safety syringe | |
| CN2794530Y (en) | Disposable injector | |
| CN208877568U (en) | A kind of children special-purpose disposable syringe | |
| CN2582632Y (en) | Disposable syringe | |
| CN2582628Y (en) | Disposable syringe | |
| CN1622840A (en) | Automatically retractable needle safety syringe | |
| CN201768238U (en) | Novel self-destruction disposable syringe | |
| CN2600106Y (en) | Anti-pull-back disposable syringe | |
| CN209848021U (en) | Disposable syringe | |
| CN2511317Y (en) | Disposable syringe against draw-back | |
| CN2894716Y (en) | Disposable syringe | |
| CN2841035Y (en) | Disposable syringe | |
| CN2805797Y (en) | Self-locking disposable injector | |
| CN203139290U (en) | Disposable nursing self-destroying needle | |
| CN201320334Y (en) | Return type safe self-destroying syringe | |
| CN215083469U (en) | Self-destruction low-residue vaccine syringe | |
| CN215083480U (en) | Medical automatic injector | |
| CN2577864Y (en) | Self-destructed disposable syringes | |
| CN2907714Y (en) | Small dosage safety self-destroyed type injector | |
| KR200313759Y1 (en) | syringe | |
| CN2348858Y (en) | Self-destroy disposable syringe | |
| CN201631838U (en) | Safety self-destruction syringe | |
| CN2461573Y (en) | Doule-locking self destroying syringe |
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 |