CN2511317Y - Disposable syringe against draw-back - Google Patents
Disposable syringe against draw-back Download PDFInfo
- Publication number
- CN2511317Y CN2511317Y CN 01256587 CN01256587U CN2511317Y CN 2511317 Y CN2511317 Y CN 2511317Y CN 01256587 CN01256587 CN 01256587 CN 01256587 U CN01256587 U CN 01256587U CN 2511317 Y CN2511317 Y CN 2511317Y
- Authority
- CN
- China
- Prior art keywords
- injection tube
- draws
- piston
- pull rod
- against draw
- 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
A disposable syringe against draw-back comprises an injection tube, a piston, and a Push drawbar, and is characterized in that: the inner wall of the back end of the injection tube is provided with a gear against draw-back, the outer wall of the back part of the Push drawbar of the piston is provided with a latch against draw-back matched with the gear against draw-back. The utility model has the advantages of simple structure, easy manufacturing, low price and convenient use, thereby implementing the really disposable use and completely avoiding the cross contamination of the virus.
Description
(1), affiliated technical field
This utility model relates to a kind of medical apparatus and instruments, particularly a kind of disposable syringe.
(2), technical background
Existing disposable syringe generally is made up of injection tube, 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.
(3), 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-down tooth that draws, and the rear portion outer wall of piston push-pull rod is provided with and the anti-down anti-down latch that draws that draws tooth to match.This utility model is work like this: the nurse is when injecting to patient, in case all inject in the patient body injection tube inner liquid medicine, anti-down on the piston push-pull rod draws latch will be stuck in anti-down drawing on the tooth on the injection tube, piston push-pull rod can not be pulled back, thereby realize disposable use truly.When the nurse carries out preparating liquid with this utility model, sucking or releasing in the medicinal liquid process, as long as the anti-down latch that draws is not stuck in anti-down drawing on the tooth, piston push-pull rod still can move around in injection tube, does not influence the original normal running of nurse.
Owing to adopted technique scheme, 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.
(4), description of drawings
Description of drawings of the present utility model is as follows:
Fig. 1 is a structural representation of the present utility model;
Among the figure: 1. injection tube; 2. piston; 3. piston push-pull rod; 4. the anti-down tooth that draws; 5. the anti-down latch that draws.
(5), the specific embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, this utility model includes 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-down tooth 4 that draws, and the rear portion outer wall of piston push-pull rod 3 is provided with and the anti-down anti-down latch 5 that draws that draws tooth 4 to match.This utility model is work like this: the nurse is when injecting to patient, in case all inject in the patient body injection tube 1 inner liquid medicine, anti-down on the piston push-pull rod 3 draws latch 5 will be stuck in anti-down drawing on the tooth 4 on the injection tube 1, piston push-pull rod 3 can not be pulled back, thereby realize disposable use truly.When the nurse carries out preparating liquid with this utility model, sucking or releasing in the medicinal liquid process, as long as the anti-down latch 5 that draws is not stuck in anti-down drawing on the tooth 4, 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. prevent pulling back disposable syringe for one kind, 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-down tooth (4) that draws, and the rear portion outer wall of piston push-pull rod (3) is provided with and the anti-down anti-down latch (5) that draws that draws tooth (4) to match.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256587 CN2511317Y (en) | 2001-11-14 | 2001-11-14 | Disposable syringe against draw-back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01256587 CN2511317Y (en) | 2001-11-14 | 2001-11-14 | Disposable syringe against draw-back |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2511317Y true CN2511317Y (en) | 2002-09-18 |
Family
ID=33665517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01256587 Expired - Fee Related CN2511317Y (en) | 2001-11-14 | 2001-11-14 | Disposable syringe against draw-back |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2511317Y (en) |
-
2001
- 2001-11-14 CN CN 01256587 patent/CN2511317Y/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 |