CN2708921Y - Disposable safety self-destroyed injector - Google Patents
Disposable safety self-destroyed injector Download PDFInfo
- Publication number
- CN2708921Y CN2708921Y CN 200420051683 CN200420051683U CN2708921Y CN 2708921 Y CN2708921 Y CN 2708921Y CN 200420051683 CN200420051683 CN 200420051683 CN 200420051683 U CN200420051683 U CN 200420051683U CN 2708921 Y CN2708921 Y CN 2708921Y
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- CN
- China
- Prior art keywords
- push rod
- piston
- center
- disposable safety
- rear end
- 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 medical device of the disposable safety self-destruction injector, comprising a tube, a needle seat, a push rod and a piston. The pistion is positioned at the front end of the push rod. The tube is connected with the needle seat by a locking joint of which a liquid medicine channel runs through the center. The needle seat of which advancing and locking helical flutes are arranged on the external surface of peripheral shell, is arranged in the center of the front end of the locking joint. Internal convex blocks matched with the helical flutes are positioned on the internal wall of the front end of the tube. A concave set of which helical stoppers are disposed on the wall, is positioned in the center of the rear end of the locking joint. A dummy club which penetrates through the piston and is matched with the concave set and of which convex blocks matched with the helical stoppers are positioned on the wall, is arranged at the front end of the push rod. A non-return set is arranged on the internal wall of the rear end of the tube, while a non-return flute matched with the non-return set is arranged at the rear end of the push rod at which an easy breaking point is set. The utility model, having the advantages of reasonable structure, safe and reliable operation, good self-destroyed performance, is able to completely avoid repeated use and meet the requirements of the doctors and patients so as to be beneficial to personal health and be used widely.
Description
Technical field
This utility model relates to a kind of improved syringe, is medical apparatus and instruments.
Background technology
Syringe is to use the most general medical apparatus and instruments clinically, and its recycling will certainly cause the infection of blood, antibacterial, medicine etc., also can cause disease, the propagation of especially more fearful fatal infection disease, serious harm health of human body.The recycling of disposable syringe, hazardness is more serious.Improve the structure of disposable syringe, preventing and even avoiding it to utilize again is the key of dealing with problems, and diversified self-destruction syringe occurred thereupon, makes the damage that syringe can destroyed property after being employed, and has prevented repeated use.But existing self-destruction syringe exists problem safe in utilization, and as the needle retractable structure, the syringe needle position and lock is firm inadequately, is prone to the needle retractable phenomenon when implementing the skin penetrating injection, causes medicinal liquid to spill outward.
Summary of the invention
The purpose of this utility model is to provide a kind of safe and reliable disposable safety self-breaking injector.
Disposable safety self-breaking injector described in the utility model, comprise cylindrical shell, needle stand, push rod and piston, piston is positioned at the front end of push rod, be connected by the locked joints that the center medicine liquid channel is arranged between its cylindrical shell and needle stand, the front end center of locked joints is provided with needle stand, the outer surface of periphery shell is provided with propelling, the locking helicla flute, the barrel front end inwall is provided with helicla flute and cooperates corresponding interior projection, the center, rear end of locked joints is provided with concave station, the concave station wall is provided with screw stops, the front end of push rod passes piston, with the concave station corresponding boss that matches, the boss perisporium is provided with and the screw stops corresponding outer projection that matches.
Be connected by the middleware locked joints between cylindrical shell and needle stand, made things convenient for and used operation, when implementing the skin penetrating injection, the interior projection of cylindrical shell is locked in the helicla flute of locked joints, and is solid and reliable, the needle retractable phenomenon can not occur, and safety is good.After injection finishes, the boss of push rod front end enters in the concave station of locked joints, the rotation push rod, outer projection on the push rod boss is locked on the screw stops of locked joints, makes the locking of the interior projection of helicla flute disengagement cylindrical shell of locked joints simultaneously, take out push rod outward, just together be evacuated to locked joints and needle stand, syringe needle in the cylinder lumen, syringe needle is stashed, prevented of the injury of the syringe needle of exposure effectively the staff, safe and reliable.According to the applicable cases needs, helicla flute and interior projection, screw stops and outer projection can design the 1-5 group respectively, form several assembly and close structure.
In this utility model:
Establish the check platform on the inwall of the rear end of cylindrical shell, establish the check groove on the push rod of piston back, check platform and check groove cooperate corresponding, and in the time of can making push rod be extracted into the rearmost position outside, the power of pushing back reaches more than the 300Kpa, are difficult to push back use again, have prevented to utilize again.
On push rod, establish easily broken place, as: on push rod, establish the easily broken place of breaking groove interruption-forming, after finishing using, push rod is fractureed from the fracture notch, disposable syringe is thoroughly destroyed, avoided repeated use.
This utility model is rational in infrastructure, and is safe and reliable, and the self-destruction performance is good, can thoroughly avoid reusing, and satisfies the loyal requirement of doctor, is beneficial to health of human body, is convenient to popularization and application.
Description of drawings
Fig. 1, this utility model one example structure sketch map.
Structural representation after Fig. 2, push rod advance.
Structural representation when Fig. 3, push rod are extracted into the rearmost position outward.
Among the figure: 1, push rod 2, fracture notch 3, check platform 4, check groove 5, outer projection 6, cylindrical shell 7, locked joints 8, screw stops 9, interior projection 10, helicla flute 11, needle stand 12, piston.
The specific embodiment
Below in conjunction with the embodiment accompanying drawing this utility model is further described.
As shown in Figure 1, disposable safety self-breaking injector described in the utility model, comprise cylindrical shell 6, needle stand 11, push rod 1 and piston 12, piston 12 is positioned at the front end of push rod 1,11 of its cylindrical shell 6 and needle stands are connected by the locked joints 7 that the center medicine liquid channel is arranged, the front end center of locked joints 7 is provided with needle stand 11, the outer surface of periphery shell is provided with four propellings, locking helicla flute 1O, cylindrical shell 6 front inner wall are provided with helicla flute 10 and cooperate four corresponding interior projections 9, the center, rear end of locked joints 7 is provided with concave station, the concave station wall is provided with two screw stops 8, the front end of push rod 1 passes piston 12, with the concave station corresponding boss that matches, the boss perisporium is provided with two outer projections 5 that match corresponding with screw stops 8.
The rear end inwall of cylindrical shell 6 is provided with check platform 3, and the push rod 1 of piston 12 back is provided with check groove 4, and check platform 3 and check groove 4 cooperate corresponding, and push rod 1 is provided with fracture notch 2.
In the diagram, locked joints 7 locks together by helicla flute 10 and interior projection 9 with needle stand 11, can implement puncture injection.After injection finishes, see Fig. 2, advance push rod 1, the boss of push rod front end enters in the concave station of locked joints 7, and rotation push rod 1 is locked on the screw stops 8 of locked joints 7 the outer projection 5 on push rod 1 boss, make the locking of the interior projection 9 of helicla flute 10 disengagement cylindrical shells of locked joints 7 simultaneously, take out push rod 1 outward, just locked joints 7 and needle stand 11, syringe needle together are evacuated in the inner chamber of cylindrical shell 6 and stash, safe and reliable.When being extracted into the rearmost position outside the push rod 1, see Fig. 3, the check groove 4 on the push rod 1 is corresponding with check platform 3 on cylindrical shell 6 inwalls, makes push rod 1 be difficult to push back again and continues to use.At last, push rod 1 is easily fractureed from fracture notch 2, thoroughly destroy.
Claims (4)
1, a kind of disposable safety self-breaking injector, comprise cylindrical shell, needle stand, push rod and piston, piston is positioned at the front end of push rod, it is characterized in that being connected by the locked joints that the center medicine liquid channel is arranged between cylindrical shell and needle stand, the front end center of locked joints is provided with needle stand, the outer surface of periphery shell is provided with propelling, the locking helicla flute, the barrel front end inwall is provided with helicla flute and cooperates corresponding interior projection, the center, rear end of locked joints is provided with concave station, the concave station wall is provided with screw stops, the front end of push rod passes piston, with the concave station corresponding boss that matches, the boss perisporium is provided with and the screw stops corresponding outer projection that matches.
2, disposable safety self-breaking injector according to claim 1 is characterized in that the rear end inwall of cylindrical shell is provided with the check platform, and the push rod of piston back is provided with the check groove, and check platform and check groove cooperate corresponding.
3, disposable safety self-breaking injector according to claim 1 and 2 is characterized in that push rod is provided with easily broken place.
4, disposable safety self-breaking injector according to claim 3 is characterized in that the easily broken place of push rod is provided with the fracture notch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051683 CN2708921Y (en) | 2004-06-25 | 2004-06-25 | Disposable safety self-destroyed injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420051683 CN2708921Y (en) | 2004-06-25 | 2004-06-25 | Disposable safety self-destroyed injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708921Y true CN2708921Y (en) | 2005-07-13 |
Family
ID=34851704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420051683 Expired - Fee Related CN2708921Y (en) | 2004-06-25 | 2004-06-25 | Disposable safety self-destroyed injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708921Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597196A (en) * | 2016-03-22 | 2016-05-25 | 上海康德莱医疗器械股份有限公司 | Safe self-destructing syringe |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
-
2004
- 2004-06-25 CN CN 200420051683 patent/CN2708921Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105597196A (en) * | 2016-03-22 | 2016-05-25 | 上海康德莱医疗器械股份有限公司 | Safe self-destructing syringe |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050713 Termination date: 20120625 |