CN2845820Y - Anti-pollution syringe - Google Patents
Anti-pollution syringe Download PDFInfo
- Publication number
- CN2845820Y CN2845820Y CN 200520128441 CN200520128441U CN2845820Y CN 2845820 Y CN2845820 Y CN 2845820Y CN 200520128441 CN200520128441 CN 200520128441 CN 200520128441 U CN200520128441 U CN 200520128441U CN 2845820 Y CN2845820 Y CN 2845820Y
- Authority
- CN
- China
- Prior art keywords
- cylinder rod
- piston rod
- pollution
- needle pipe
- injection needle
- 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 an anti-pollution syringe which includes a needle pipe, a cylinder rod and a cylinder rod crank. A thin emulsion sheath which length is equal or appreciably more than the length of the cylinder rod is blocked and fixedly connected to the edge of the back end of the needle pipe. The thin emulsion sheath closes the opening of the back end of the needle pipe, the cylinder rod and the plunger in it. The dead end of the thin emulsion sheath is a mastoid process shape gibbosity. The mastoid process shape gibbosity and the surface of the cylinder rod crank are tightly enwrapped and fixedly connected to be integration. The thin emulsion sheath can be retracted or extended following the pulling and drawing of the cylinder rod passively. Because of adopting the structure, during the whole injecting operational process, the pulling and drawing of the cylinder rod are in the enclosed space which is formed by the thin emulsion sheath all along. The inner wall of the needle pipe is isolated with the external all along. Therefor, the anti-pollution syringe can fundamentally avoid the iatrogenic cross infection caused by the pollution of the inner wall of the needle pipe and the cylinder rod.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, especially a kind of antipollution syringe.
Background technology
Conventional injector is made up of injection needle and piston, and its needle tubing is a cylindrical shape, and piston rod is cylindrical.During use, when pulling out piston suction medicament, operator's hands is often wanted contact piston, causes piston to pollute, when piston is pushed, will take pollutant in the needle tubing to, thereby cause the needle tubing internal contamination, for reducing this pollution, piston rod is designed to the cross section for " ten " font at present, reducing and the contact surface of operator's hands, but still thorough contaminated solution problem.Particularly concentrate in the injection room, ward and make up a prescription or the time marquis of a fluid infusion various medicaments, same syringe wanted continuous repeated multiple times push-and-pull, pollutant are brought into the injection needle front portion by piston again and again, make pollution grows worse.Now, though there is technical regulation to require the operator not want contact piston, be difficult in practice carry out.
Summary of the invention
The purpose of this utility model is to provide a kind of and can stops to pollute injection needle inwall and piston and cause the syringe of medical cross infection, thereby has thoroughly solved because the harm that the pollution of injection needle inwall and piston causes for patient and medical personnel both sides.
The purpose of this utility model is to realize like this, this anti-pollution injector comprises injection needle, piston rod, piston rod handle, fixing sealing connects the thin rubber finger sleeve that a length equals or slightly be longer than piston rod on the edge of described injection needle rear end, in thin rubber finger sleeve together is closed in injection needle open rearward end and piston rod and piston, the cecum of thin rubber finger sleeve is the papillary projection, papillary projection and piston rod handle surfaces are closely wrapped up, and are fixedly connected to form one.Thin rubber finger sleeve is pushing away, drawing and bouncing back or stretching with piston rod passively.
Owing to adopt said structure, in whole injection manipulation, the pushing away of piston rod, roping is moving is in all the time in the confined space that is formed by thin rubber finger sleeve, the injection needle inwall also is hedged off from the outer world all the time, has therefore fundamentally stopped because the generation of the medical cross infection that pollution caused of injection needle inwall and piston rod.Simultaneously, because simple in structure, with low cost, be convenient to operation, inconvenience is suitable for clinical practice, and more be applicable to the field, the urgent rescue under battlefield, various natural disaster, the condition such as abominable uses.
Description of drawings
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing
Fig. 1 is a sketch map of the present utility model
Among the figure: 1, injection needle 2, piston rod 3, piston rod handle 4, thin rubber finger sleeve 5, injection needle rear end
The specific embodiment
As shown in Figure 1, this anti-pollution injector comprises injection needle 1, piston rod 2, piston rod handle 3, fixing sealing connects the thin rubber finger sleeve 4 that a length equals or slightly be longer than piston rod on the edge of described injection needle rear end 5, in thin rubber finger sleeve 4 together is closed in injection needle rear end 5 openings and piston rod 2 and piston, the cecum of thin rubber finger sleeve 4 is the papillary projection, papillary projection and piston rod handle 3 surfaces are parcel closely, is fixedly connected to form one.Thin rubber finger sleeve 4 is pushing away, drawing and bouncing back or stretching with piston rod 2 passively.In whole injection manipulation, the pushing away of piston rod, roping is moving is in all the time in the confined space that is formed by thin rubber finger sleeve, the injection needle inwall also is hedged off from the outer world all the time, has therefore fundamentally stopped because the generation of the medical cross infection that pollution caused of injection needle inwall and piston rod.
Claims (1)
1, a kind of anti-pollution injector, this anti-pollution injector comprises injection needle, piston rod, piston rod handle, it is characterized in that fixing sealing connects the thin rubber finger sleeve that a length equals or slightly be longer than piston rod on the edge of described injection needle rear end, in thin rubber finger sleeve together is closed in injection needle open rearward end and piston rod and piston, the cecum of thin rubber finger sleeve is the papillary projection, papillary projection and piston rod handle surfaces are closely wrapped up, and are fixedly connected to form one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128441 CN2845820Y (en) | 2005-09-25 | 2005-09-25 | Anti-pollution syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520128441 CN2845820Y (en) | 2005-09-25 | 2005-09-25 | Anti-pollution syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2845820Y true CN2845820Y (en) | 2006-12-13 |
Family
ID=37511235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520128441 Expired - Fee Related CN2845820Y (en) | 2005-09-25 | 2005-09-25 | Anti-pollution syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2845820Y (en) |
-
2005
- 2005-09-25 CN CN 200520128441 patent/CN2845820Y/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 |