CN2438463Y - Disposable safety syringe - Google Patents
Disposable safety syringe Download PDFInfo
- Publication number
- CN2438463Y CN2438463Y CN 00250382 CN00250382U CN2438463Y CN 2438463 Y CN2438463 Y CN 2438463Y CN 00250382 CN00250382 CN 00250382 CN 00250382 U CN00250382 U CN 00250382U CN 2438463 Y CN2438463 Y CN 2438463Y
- Authority
- CN
- China
- Prior art keywords
- needle
- piston
- syringe
- cartridge
- utility
- 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 safety syringe, which belongs to medical equipment. The utility model comprises a needle head, a liquid medicine cylinder, a piston, and a piston rod, wherein, the convex position before the liquid medicine cylinder is provided with a needle seat. A fixed inserting block used for inserting needle heads is arranged inside the needle seat. The tail end of the needle head and the top end of the piston have devices for locking needle heads, which are mutually matched. Each device for locking needle heads is composed of two hook holes at the tail end of the needle head and two clamping hooks at the top end of the piston. An air holes are arranged on a back end cover. A protective device is arranged between the end of the piston rod and the liquid medicine cylinder. The utility model has the advantage of safety. The utility model can not be used again after use, and the needle head can not be exposed at the outer part of the syringe.
Description
This utility model relates to a kind of disposible safety syringe, belongs to medical apparatus and instruments.
Area in some mismanagements, common disposable syringe is not just directly become rubbish with destroying later, picked up object for appreciation by some children, be easy to damage, the whole nation has several because of the useless syringe incident that disables of causing injury, and even more serious is, someone collects the disposable syringe of not destroying, after unreasonable processing, put on market once more and make a profit, the people is arranged even directly be the shared syringe of several people, very easily cause transmission of disease.
The purpose of this utility model is in order to overcome above-mentioned deficiency of the prior art, can not reuse after a kind of the using up and syringe needle is not exposed to the disposible safety syringe of syringe exterior and provide.
The purpose of this utility model is achieved in that this syringe comprises syringe needle, cartridge, piston and piston rod; the convex position is a needle stand before the cartridge; fixedly inserted block of syringe needle is arranged in the needle stand; syringe needle is inserted in the needle stand; there is the needle locking device that cooperatively interacts on the top of syringe needle tail end and piston; cartridge rear end cap and barrel bond together and with piston rod movingly, steam vent is arranged on the rear end cap, between piston-rod end and the cartridge protector is arranged.
The needle locking device is made up of at least one dog hole of syringe needle tail end and at least one grab of piston tip.
The needle locking device is made up of the kayser of at least one latch hole of syringe needle tail end and at least one band spring of piston tip.
This utility model compared with prior art has following advantage:
1, piston and piston rod can not be pulled out outside the cartridge, the repeated use of can not sterilizing once more after promptly syringe uses up;
2, owing to be provided with the needle locking device, after the disposable injection, syringe needle can retract in the cartridge, is not exposed to syringe exterior, and is safe and reliable.
Accompanying drawing and drawing explanation:
Fig. 1 is the structural representation of first embodiment of this utility model.
Fig. 2 is the structural representation of second embodiment of this utility model.
Below in conjunction with drawings and Examples in detail this utility model is described in detail.
Syringe shown in Figure 1 comprises syringe needle 6, cartridge 4, piston 9 and piston rod 2, the convex position is a needle stand 5 before the cartridge 4, be useful on the fixedly inserted block 7 of pin in the needle stand 5, fixedly inserted block 7 is made by rubber or plastic or other material, there is the needle locking device that cooperatively interacts on the top of syringe needle 6 tail ends and piston 9, and the needle locking device is made up of two dog holes 8 of syringe needle tail end and two grabs 3 of piston tip; Cartridge 4 rear end caps 1 bond together with barrel and with piston rod 2 movingly, steam vent 10 is arranged on the rear end cap 1; Between piston rod 2 ends and the cartridge 4 protector 11 is arranged.
Fig. 2 has provided the cutaway view of another kind of disposible safety syringe, and needle locking device is wherein formed the same Fig. 1 of the structure of other parts by the kayser 12 of two latch hole 14 of syringe needle tail end and two bands of piston tip spring 13.
When a shot finishes, piston 9 is pulled to cartridge 4 tops, and grab 3 just in time enters in the dog hole 8 or kayser 12 enters in the latch hole 14, pulls back piston rod 2, and syringe needle 6 just retracts in the cartridge 4; Because cartridge 4 rear end caps 1 bond together with barrel, thus piston 9 and piston rod 2 can not pull out outside the cartridge 4, in case repeated use once more after sterilization; For fear of in transportation, causing the needle locking device to lock accidentally, between piston rod 2 ends and the cartridge 4 protector 11 is arranged, during use, protector is torn and can be taken away along dotted line.
Grab 3 in the needle locking device can be one or more, the same embodiment of its operation principle with the quantity of dog hole 8 or kayser 12 and latch hole 14.
Claims (3)
1, a kind of disposible safety syringe; comprise syringe needle, cartridge, piston and piston rod; it is characterized in that the preceding convex position of cartridge is a needle stand; fixedly inserted block of syringe needle is arranged in the needle stand; syringe needle is inserted in the needle stand, and there is the needle locking device that cooperatively interacts on the top of syringe needle tail end and piston, cartridge rear end cap and barrel bond together and with piston rod movingly; steam vent is arranged on the rear end cap, between piston-rod end and the cartridge protector is arranged.
2, disposible safety syringe according to claim 1 is characterized in that: the needle locking device is made up of at least one dog hole of syringe needle tail end and at least one grab of piston tip.
3, disposible safety syringe according to claim 1 is characterized in that: the needle locking device is made up of the kayser of at least one latch hole of syringe needle tail end and at least one band spring of piston tip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250382 CN2438463Y (en) | 2000-09-04 | 2000-09-04 | Disposable safety syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00250382 CN2438463Y (en) | 2000-09-04 | 2000-09-04 | Disposable safety syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2438463Y true CN2438463Y (en) | 2001-07-11 |
Family
ID=33608578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00250382 Expired - Fee Related CN2438463Y (en) | 2000-09-04 | 2000-09-04 | Disposable safety syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2438463Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006076829A1 (en) * | 2005-01-21 | 2006-07-27 | Hsienwen Hsieh | A disposable syringe |
-
2000
- 2000-09-04 CN CN 00250382 patent/CN2438463Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006076829A1 (en) * | 2005-01-21 | 2006-07-27 | Hsienwen Hsieh | A disposable syringe |
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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 |