CN2353392Y - Self-locking type disposable syringe - Google Patents
Self-locking type disposable syringe Download PDFInfo
- Publication number
- CN2353392Y CN2353392Y CN 98233161 CN98233161U CN2353392Y CN 2353392 Y CN2353392 Y CN 2353392Y CN 98233161 CN98233161 CN 98233161 CN 98233161 U CN98233161 U CN 98233161U CN 2353392 Y CN2353392 Y CN 2353392Y
- Authority
- CN
- China
- Prior art keywords
- piston
- syringe
- self
- disposable injector
- elasticity card
- 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 self-locking type disposable syringe. A needle head is arranged on the front end of a needle cylinder, a piston is arranged in the needle cylinder, an annular groove is arranged on the inner wall of the needle cylinder, an elastic clamp is arranged on the front part of the piston, and a needle cylinder handle and a piston handle are matched and supported through a safety support ring. Before the utility model is used, whether the syringe is started and used or not can be judged through examining the appearance and examining whether the safety support ring is removed or not. After the injection is completed, the elastic clamp which is arranged on the piston is clamped in the annular groove which is arranged in the needle cylinder, and the piston can be locked. After being used once, the self-locking type disposable syringe is reliably destroyed, and can not be repeatedly used.
Description
This utility model relates to a kind of self-locking disposable injector.
At present, syringe can be divided into two classes, and a class is reusable glass syringe, and a class is a plastic injector for temporary use, promptly existing first generation disposable syringe.Reusable glass syringe at the sterilization imprecision, when not thorough, easily produce and infects and cross infection, spreads disease, so progressively be eliminated.Existing plastic injector for temporary use, regulation can only be used once in principle, but still has the possibility of reusing and reclaiming reuse, because it be plasthetics, can't carry out autoclave sterilization completely after the recovery, and easily be picked up and be used as toy by the object for appreciation child, therefore, its potential danger is bigger.
The purpose of this utility model is to avoid above-mentioned weak point of the prior art, and provides a kind of rational in infrastructure, safe ready, and use the second filial generation disposable syringe of once promptly reliably scrapping, i.e. self-locking shot device.
The purpose of this utility model can reach by following measure:
A kind of self-locking disposable injector comprises syringe (2), be located at the piston (8) in the syringe (2), its special character is, suitable position is provided with annular groove (3) and (4) on the inwall of described syringe (2), described piston (8) front portion is provided with elasticity bayonet lock (7), and the syringe handle (6) of described syringe (2) tail end cooperates supporting with the piston handle (10) of piston rod (9) tail end by insurance pushing out ring (5).
Piston of the present utility model (8) is the piston that is provided with elastic piston head (12).
The termination section that this utility model elasticity bayonet lock (7) protrudes piston (8) surface is half arc, half angled face.
Elasticity bayonet lock of the present utility model (7) is for having the elastic ring of an opening, and it is located in the groove (11).
Piston of the present utility model (8) and elasticity bayonet lock (7) can be designed as one, and bayonet lock (7) in a disguised form is that resilient barb (13) is connected with piston (8).
The accompanying drawing drawing is described as follows:
Fig. 1 is the structural representation of this utility model syringe.
Fig. 2 is first kind of structural representation of this utility model piston.
Fig. 3 is second kind of structural representation of this utility model piston.
Referring to Fig. 1-2, this utility model is mainly by syringe (2), is located at the piston (8) in the syringe (2) and is located at syringe needle (1) formation of syringe (2) front end.Syringe needle (1) can be fixedly connected or active card be connected to syringe (2) front end.The inwall of syringe (2) is provided with annular groove (3) and (4), and syringe (2) tail end is provided with syringe handle (6).Piston (8) front end is the piston head with cushioning effect (12) that elastomeric material is made.Piston head (12) is fixed with piston (8) front end clamping or snapping.The forward piston body of piston (8) surface also is provided with groove (11), be provided with elasticity bayonet lock (7) in the groove (11), the part that elasticity bayonet lock (7) outer end protrudes from piston (8) surface has half arc half-angle shape end face, be shaped as elastic ring with an opening, see Fig. 3, elastic ring can directly be stuck in the groove (11).Piston (8) tail end is piston handle (10), after inserting piston (8) in the syringe (2), the insurance pushing out ring (5) that split connects can be set between syringe handle (6) and piston handle (10), before the use, open insurance pushing out ring (5) earlier, can inject after the emptying of suction injection, when piston (8) advances injection to finish, bayonet lock (7) on the piston (8) just in time falls in the annular groove (3) of syringe (2), and piston this moment (8) promptly can not be drawn back by locked again.Insurance dagger (5) is used to prevent that this utility model from using secondary piston (8) locked and scrap, and also is convenient to assembling and transports safely, still discerns whether used visible marking of syringe.Groove (4) is an antiwithdrawal device, prevents to use forefathers to scrap office as destruction.Relieving ring (5) is for there to be the tubbiness brittle plastic of shaft orientation reinforcing rib to make, and radially reinforcing can be broken.Referring to Fig. 3, piston of the present utility model (8) and elasticity card (7) can be designed as one.Elasticity bayonet lock (7) in a disguised form is a resilient barb (13).
The utility model compared with prior art has following advantage:
1, avoided limiting or operate disappearing of causing lack of standardization because of medical condition Poison is the phenomenon of sterilization thoroughly or not, has stopped to use syringe and the sense that causes Dye and cross-infection.
2, features simple structure, easy to use, dependable performance, with low cost.
3, use and once namely reliably to scrap voluntarily, lost again with and play Function has been stopped the recycling phenomenon.
Claims (5)
1, a kind of self-locking disposable injector comprises syringe (2), be located at the piston (8) in the syringe (2), it is characterized in that: suitable position is provided with annular groove (3) and (4) on the inwall of described syringe (2), described piston (8) front portion is provided with elasticity card (7), and the syringe handle (6) of described syringe (2) tail end cooperates support with the piston handle (10) of piston rod (9) tail end by insurance pushing out ring (5).
2, self-locking disposable injector as claimed in claim 1 is characterized in that: described piston (8) is the piston that is provided with elastic piston head (12), and the head suitable position of piston is provided with elasticity card (7), and elasticity card (7) is the elastic ring of circular opening.
3, self-locking disposable injector as claimed in claim 1 or 2 is characterized in that: the termination section that described elasticity card (7) protrudes piston (8) surface is half arc half-angle face, can reliably snap in the annular groove (3) or (4) of syringe (2) inwall.
4, self-locking disposable injector as claimed in claim 3 is characterized in that: described piston (8) and elasticity card (7) are designed to two kinds of forms, and a kind of is split type, and another kind is a Contiuum type.Bayonet lock (7) can be designed to the pellet shot from a slingshot card in split type, and the Contiuum type bayonet lock in a disguised form is that resilient barb (13) is connected with (8).
5, self-locking disposable injector as claimed in claim 1 is characterized in that: insurance pushing out ring (5) is the frangible tubbiness ring of fragility.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233161 CN2353392Y (en) | 1998-11-18 | 1998-11-18 | Self-locking type disposable syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98233161 CN2353392Y (en) | 1998-11-18 | 1998-11-18 | Self-locking type disposable syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2353392Y true CN2353392Y (en) | 1999-12-15 |
Family
ID=33981955
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98233161 Expired - Fee Related CN2353392Y (en) | 1998-11-18 | 1998-11-18 | Self-locking type disposable syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2353392Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8814827B2 (en) | 2006-11-06 | 2014-08-26 | Simon Paul Clayson | Retractable syringe |
-
1998
- 1998-11-18 CN CN 98233161 patent/CN2353392Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8814827B2 (en) | 2006-11-06 | 2014-08-26 | Simon Paul Clayson | Retractable 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 |