CN201088754Y - Disposable syringe - Google Patents
Disposable syringe Download PDFInfo
- Publication number
- CN201088754Y CN201088754Y CNU2007201291724U CN200720129172U CN201088754Y CN 201088754 Y CN201088754 Y CN 201088754Y CN U2007201291724 U CNU2007201291724 U CN U2007201291724U CN 200720129172 U CN200720129172 U CN 200720129172U CN 201088754 Y CN201088754 Y CN 201088754Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- syringe
- annular
- needle cylinder
- boss
- 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 relates to a disposable injector, which comprises a needle cylinder, a push rod and a piston; wherein, an annular convex is arranged at an inner side of the needle cylinder, an annular boss is disposed on the push rod, a lower surface of the annular convex is a level surface, an upper surface of the annular boss is the level surface, an annular groove is positioned at an outer side of the needle cylinder of the height corresponding to the annular convex. The annular convex is arranged on the needle cylinder and the annular boss is disposed on the push rod, so that the annular boss on the push rod and the annular convex on the needle cylinder are clamped deadly, when the push rod reaches the bottom of the needle cylinder, and accordingly, the push rod cannot be pulled out for reuse; for the forced pulling out of the push rod, the needle cylinder can be damaged under the strong force, because the annular groove is positioned at the outer side of the needle cylinder of the height corresponding to the annular convex, so that the push rod is broken at the annular groove for avoiding the reuse effectively.
Description
Technical field:
This utility model relates to syringe, particularly a kind of disposable syringe.
Technical background:
In medical and health industry, the medicine injection is a kind of medical procedure commonly used, and plastic injector for temporary use promptly can not use because of not needing to carry out disinfection, and can effectively avoid cross infection, thereby has obtained using widely.But after using, but often because miscarriage, sell once more after being reclaimed repacking again by the lawless person greatly, also having some poverty-stricken areas to have to simply disinfect the back because of bankroll problem continues to use, and drug addict etc. often has the situation of the shared syringe of several people, and these have all stayed very big hidden danger to the propagation or the cross infection of virus.
Summary of the invention:
The purpose of this utility model is to overcome the shortcoming that exists in the prior art, and a kind of disposable syringe simple in structure, easy to operate, safe in utilization is provided.
To achieve these goals, this utility model provides a kind of disposable syringe, form by syringe, push rod, piston, wherein, push rod is arranged in the syringe, and the end that push rod is positioned at syringe is provided with piston, the syringe inboard is provided with annular protrusion, push rod is provided with annular boss, and the lower surface of described annular protrusion is a horizontal plane, and the upper surface of described annular boss is a horizontal plane.
The outside of described syringe further is provided with annular groove, is arranged on the corresponding height of described annular protrusion.
The outstanding advantage of this utility model is: simple in structure, easy to operate, with low cost, the same with traditional syringe using method, because of annular protrusion is set on the syringe, annular boss is set, on the push rod so when push rod arrives the syringe bottom, annular boss and the annular protrusion on the syringe on the push rod are stuck, make push rod can't pull out and can't continue and use; If there is the people to think by force push rod to be pulled out, because of the corresponding height of syringe outside annular protrusion is provided with annular groove, syringe promptly can be damaged under powerful external force, disconnects from annular groove, thereby effectively avoid reusing.
Description of drawings:
Fig. 1 is the unused state cross-sectional schematic of this utility model embodiment.
Fig. 2 is a state cross-sectional schematic after the use of this utility model embodiment.
The specific embodiment:
Its design agents mechanism comprised syringe 1, push rod 2, piston 3, annular boss 4, annular groove 5, annular protrusion 6 when embodiment of the present utility model implemented.Push rod 2 is arranged in the syringe 1, the end that push rod 2 is positioned at syringe 1 is provided with piston 3, syringe 1 inboard is provided with annular protrusion 6, push rod 2 is provided with annular boss 4, the lower surface of annular protrusion 6 is a horizontal plane, the upper surface of annular boss 4 is a horizontal plane, and the outside of syringe 1 also is provided with annular groove 5, and annular groove 5 is arranged on the corresponding height of annular protrusion 6.
As shown in Figure 1, it is the sketch map of the unused state of this utility model embodiment, and the annular boss 4 on the push rod 2 is above the annular protrusion 6 of syringe 1.
As shown in Figure 2, it is the sketch map of state after the use of this utility model embodiment, push rod 2 arrives the bottom of syringe 1, annular boss 4 on the push rod 2 is below the annular protrusion 6 of syringe 1, annular boss 4 blocks with annular protrusion 6, push rod 2 can't be pulled out in syringe 1, if there is the people to think to pull out by force the words of push rod 2, because of syringe 1 outside also is provided with annular groove 5 on the position of the corresponding height of annular protrusion 6, under powerful external force effect, syringe 1 can rupture from the position of annular groove 5, thereby syringe of the present utility model can't be re-used, thereby has effectively avoided the virus disseminating or the cross infection that cause because of reusing of syringe.
Claims (2)
1. disposable syringe, form by syringe, push rod, piston, it is characterized in that, push rod is arranged in the syringe, the end that push rod is positioned at syringe is provided with piston, and the syringe inboard is provided with annular protrusion, and push rod is provided with annular boss, the lower surface of described annular protrusion is a horizontal plane, and the upper surface of described annular boss is a horizontal plane.
2. a kind of disposable syringe according to claim 1 is characterized in that the outside of described syringe further is provided with annular groove, is arranged on the corresponding height of described annular protrusion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201291724U CN201088754Y (en) | 2007-08-20 | 2007-08-20 | Disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201291724U CN201088754Y (en) | 2007-08-20 | 2007-08-20 | Disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201088754Y true CN201088754Y (en) | 2008-07-23 |
Family
ID=39860509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201291724U Expired - Fee Related CN201088754Y (en) | 2007-08-20 | 2007-08-20 | Disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201088754Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110025850A (en) * | 2019-05-07 | 2019-07-19 | 中国人民解放军第四军医大学 | A kind of pre-filled flushing syringe |
-
2007
- 2007-08-20 CN CNU2007201291724U patent/CN201088754Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110025850A (en) * | 2019-05-07 | 2019-07-19 | 中国人民解放军第四军医大学 | A kind of pre-filled flushing syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Wang Xigang Document name: Notification of Termination of Patent Right |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080723 Termination date: 20090921 |