CN2766867Y - Stop-detach type self-destruction disposable syringe - Google Patents
Stop-detach type self-destruction disposable syringe Download PDFInfo
- Publication number
- CN2766867Y CN2766867Y CN 200420054369 CN200420054369U CN2766867Y CN 2766867 Y CN2766867 Y CN 2766867Y CN 200420054369 CN200420054369 CN 200420054369 CN 200420054369 U CN200420054369 U CN 200420054369U CN 2766867 Y CN2766867 Y CN 2766867Y
- Authority
- CN
- China
- Prior art keywords
- push rod
- injection tube
- disposable syringe
- piston
- destruction
- 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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Abstract
The utility model relates to a stop-detaching type self-destruction disposable syringe which belongs to the technical field of medical instruments. The utility model is mainly composed of an injection needle, an injection cylinder, a push rod piston, etc., wherein the injection needle is fixed on a nipple of the injection cylinder, the push rod piston is arranged in the injection cylinder, the inner wall at the front end of the injection cylinder is provided with a spacing convex block, an inlet at the back end of the injection cylinder is provided with a blocking block, a piston of the push rod piston is connected with a push rod head, the push rod head and a push rod are provided with locking teeth which are engaged and connected, and the engaging part of the locking teeth of the push rod head and the push rod is arranged in a stop ring arranged at the back part of the push rod head. The utility model has the advantages of reasonable and simple structure, easy production and manufacture, and convenient and safe use. After injection is completed, the injection needle, the injection cylinder, the piston and the push rod of the utility model can not be used again; thus, the self destruction of all components of the syringe is realized, the purpose of disposable use is achieved, and the propagation of some diseases caused by repeated use is avoided.
Description
Technical field
This utility model relates to a kind of structure of disposable syringe, especially by the separate type self-destructive syringe, belongs to technical field of medical instruments.
Background technology
Domestic and international widely used disposable syringe comprises entry needle, injection tube, push-rod piston at present, and the disposable syringe of this structure does not possess self-destroying function.So-called disposable behavior control that can only be artificially is not if sternly just there is reusable probability in control, for transmission of disease or other malpractice stay serious hidden danger.
The utility model content
Technical problem to be solved in the utility model is the deficiency at existing syringe, provide a kind of by separate type self-destruction type disposable syringe, after finishing injection, its entry needle, injection tube, piston, push rod all can't utilize again, thereby realize the self-destruction of the whole parts of syringe, reach disposable purpose.
The technical solution of the utility model is achieved in that by separate type self-destruction type disposable syringe, comprise entry needle, injection tube, push-rod piston, entry needle is fixed on the injection tube nipple, push-rod piston places in the injection tube, the front end of injection tube is provided with spacing block set, the porch, rear end is provided with stop block, described push-rod piston comprises piston, push rod cup and push rod, piston is connected on the push rod cup, and push rod cup and push rod are provided with the lock tooth and are connected with a joggle, and the lock tooth engaging piece of push rod cup and push rod places ending in the ring of push rod cup rear portion setting.Described spacing block set is the bar ridge, is distributed on the injection tube front inner wall.Described stop block is for being the circle ridge of a circle at least.Described lock tooth is a slope shape, and lock tooth engaging piece profile is cylindrical.Described lock tooth is a hemispherical, and lock tooth engaging piece profile is a polygon.Described profile by ring is cylindrical, endoporus and lock tooth engaging piece profile coupling.Push rod is provided with resistance and pushes away card.Pushing away the card corresponding section with resistance on the edge, injection tube porch is provided with resistance and pushes away draw-in groove.The internal diameter of described injection tube front end is less than the injection tube back end inside diameter.
When using this utility model injection, earlier the resistance on the push rod being pushed away card turns round or unloads, push rod is done in injection tube inhaled medicine and promotion, when push rod is pushed into, be prevented from advancing when ring arrives spacing block set on the injection tube front inner wall, promptly be in state to be separated with the push rod cup of piston with push rod this moment is the self-destruction state, when continuing the propelling push rod, lock tooth engaging piece begins to break away from gradually fixing by what encircle, until breaking away from fixing by ring fully.Because the front end of injection tube is provided with spacing block set, that will fill in when piston is pulled to bottom (front end) is very tight, and push rod loses with the push rod cup of being with piston and ends the fixing separated of ring; Be provided with stop block because of the injection tube porch again, push rod can not be released to re-assembly, lock tooth engaging piece also just can not reset to by the ring internal fixation, that is to say and to do the secondary drawing liquid, realized that parts such as entry needle, injection tube, piston push rod can't utilize again, reach the purpose of disposable use, safety self-destruct.
This utility model is rational in infrastructure simple, manufactures easily safety easy to use.After finishing injection, its entry needle, injection tube, piston, push rod all can't utilize again, thereby realize the self-destruction of the whole parts of syringe, reach disposable purpose, avoid the excellent popularization using value being arranged because of repeated use causes some transmission of disease.
Description of drawings
Fig. 1 is this utility model structural representation;
Fig. 2 is the structural representation of injection tube front end of the present utility model;
Among the figure: 1 entry needle, 2 injection tube nipples, 3 spacing block sets, 4 pistons, 5 push rod cups, 6 by ring, 7 lock teeth, 8 push rods, 9 injection tubes, 10 stop blocks, 11 resistances push away draw-in groove, and 12 resistances push away card.
The specific embodiment
Entry needle 1 is fixed on the injection tube nipple 2, and push-rod piston places in the injection tube 9, and the front inner wall of injection tube is provided with bar ridge shape spacing block set 3, porch, the rear end handicapping piece 10 of injection tube.Push-rod piston is made of piston 4, push rod cup 5 and push rod 8, piston 4 is connected on the push rod cup 5, push rod cup and push rod are provided with lock tooth 7 structure that is connected with a joggle, the lock tooth of push rod cup and push rod is connected with a joggle and partly places the cylindrical of push rod cup rear portion setting to lock in ring 6, and the endoporus that ends ring 6 mates with lock tooth engaging piece profile.The stop block 10 that the porch, rear end of injection tube is provided with can be a circle ridge, also can be several projections.Lock tooth 7 can be slope shape, hemispherical, and the profile of lock tooth engaging piece is cylindrical or polygon.Resistance is set on the push rod pushes away card 12, push away card 12 corresponding positions with resistance on the edge of injection tube porch and be provided with to hinder and push away draw-in groove 11.The internal diameter of injection tube front end is slightly less than the injection tube back end inside diameter.
Claims (9)
1, a kind of by separate type self-destruction type disposable syringe, comprise entry needle (1), injection tube (9), push-rod piston, entry needle (1) is fixed on the injection tube nipple (2), push-rod piston places in the injection tube (9), the front end that it is characterized in that described injection tube (9) is provided with spacing block set (3), the porch, rear end is provided with stop block (10), described push-rod piston comprises piston (4), push rod cup (5) and push rod (8), piston (4) is connected on the push rod cup (5), and push rod cup (5) is provided with lock tooth (7) with push rod (8) and is connected with a joggle, and push rod cup (5) places ending in the ring (6) of push rod cup (5) rear portion setting with the lock tooth engaging piece of push rod (8).
2, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that described spacing block set (3) for the bar ridge, is distributed on injection tube (9) front inner wall.
3, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that described stop block (10) is for being a circle ridge of enclosing at least.
4, the separate type self-destruction type disposable syringe that ends according to claim 1 is characterized in that described lock tooth (7) is a slope shape, and lock tooth engaging piece profile is cylindrical.
5, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that described lock tooth (7) is hemispherical, lock tooth engaging piece profile is a polygon.
6, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that described profile by ring (6) is cylindrical, endoporus and lock tooth engaging piece profile coupling.
7, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that described push rod (8) is provided with resistance and pushes away card (12).
8, according to claim 1 by separate type self-destruction type disposable syringe, it is characterized in that on described injection tube (9) edge, porch that pushing away card (12) corresponding section with resistance is provided with to hinder and pushes away draw-in groove (11).
9, according to claim 1 by separate type self-destruction type disposable syringe, the internal diameter that it is characterized in that described injection tube (9) front end is less than injection tube (9) back end inside diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054369 CN2766867Y (en) | 2004-12-09 | 2004-12-09 | Stop-detach type self-destruction disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420054369 CN2766867Y (en) | 2004-12-09 | 2004-12-09 | Stop-detach type self-destruction disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2766867Y true CN2766867Y (en) | 2006-03-29 |
Family
ID=36680727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420054369 Expired - Fee Related CN2766867Y (en) | 2004-12-09 | 2004-12-09 | Stop-detach type self-destruction disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2766867Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717250A (en) * | 2011-03-07 | 2014-04-09 | 米德兰医药设备控股公司 | Retractable syringe with locking plunger |
| CN108815639A (en) * | 2018-05-08 | 2018-11-16 | 河南兴恒医疗用品有限公司 | Disposible safety syringe |
-
2004
- 2004-12-09 CN CN 200420054369 patent/CN2766867Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103717250A (en) * | 2011-03-07 | 2014-04-09 | 米德兰医药设备控股公司 | Retractable syringe with locking plunger |
| 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 | ||
| 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 |