CN2708918Y - Rubber plastic piston of injector - Google Patents
Rubber plastic piston of injector Download PDFInfo
- Publication number
- CN2708918Y CN2708918Y CN 200420040590 CN200420040590U CN2708918Y CN 2708918 Y CN2708918 Y CN 2708918Y CN 200420040590 CN200420040590 CN 200420040590 CN 200420040590 U CN200420040590 U CN 200420040590U CN 2708918 Y CN2708918 Y CN 2708918Y
- Authority
- CN
- China
- Prior art keywords
- injector
- rubber plastic
- plastic piston
- piston
- main body
- 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 rubber plastic piston of injector. The main body of the rubber plastic piston of injector is in the shape of a cylinder, and the external side of the rubber plastic piston of injector is provided with three rings of annular dummy clubs. The top of the main body is a flat top, and the interior of the main body is a stepped cavity. The utility model adopts the rubber modified plastics, so the process is simple. The annular dummy clubs arranged on the external side of the rubber plastic piston of injector has elasticity, contacts with an injection tube tightly, and has good sealing performance. The top is a flat top, which has a small contact surface with the medical liquid. So the residue of the medical liquid is reduced, and the harm to human bodies which is caused by the digestion objects in the piston is also reduced. The rubber plastic piston of injector has the advantages of simple structure, convenient assembly and use, which is an ideal rubber plastic piston of injector.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, a kind of specifically syringe rubber piston.
Background technology
We know, mainly the making of conventional injector piston by elastomeric material, and main body is cylindrical, and the top is taper.Its one side cylinder-shaped body and injection tube contact surface are big, and elasticity is relatively poor, and its structure is difficult for being equipped with injection rod simultaneously, and top tapered and medicinal liquid contact surface are big on the other hand, and the medicinal liquid residual quantity is big during injection, and the piston leachable is also many, and is harmful.And because the rubber processing complexity, cost of material is higher, so conventional injector piston manufacturing process complexity, the cost height.
Summary of the invention
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provides a kind of simple in structure, easy to assembly, the disposable syringe rubber piston of elasticity and favorable sealing property.
The technical scheme in the invention for solving the above technical problem is: a kind of syringe rubber piston is characterized in that: its main body is cylindrical, and the outside is provided with three all ring-type boss, and the top is a flat-top, and inside is the stairstepping cavity.
This utility model is owing to adopt rubber-modified plastics processing, and handling ease is provided with some annular boss outside it, the contrast prior art, and its high resilience contacts well good airproof performance with injection tube.The top is a flat-top, little with the medicinal liquid contact surface, medicinal liquid is residual when both having reduced injection, has also reduced in the piston easily leachable to the harm of human body.
Description of drawings
Below in conjunction with accompanying drawing this utility model is described further.
Fig. 1 is a structural representation of the present utility model.
1. flat-tops among the figure, 2. annular boss, 3. cavity.
The specific embodiment
As can be seen from Figure 1, a kind of syringe rubber piston of this utility model, its main body is cylindrical, and the outside is provided with three all ring-type boss 2, and the top is a flat-top 1, and inside is stairstepping cavity 3.Annular boss 2 is used for touching good airproof performance with syringe barrel.Internal piston is provided with a cavity 3, and this cavity is stairstepping, is used for being connected with injection rod, is convenient to assembling.This utility model is made by rubber-plastics material, can be made into translucently, helps use observing, and improves the injection effect.The top is a flat-top 1, little with the medicinal liquid contact surface, medicinal liquid is residual when both having reduced injection, has also reduced in the piston easily leachable to the harm of human body.
This utility model compared with prior art, processing technique is simple, be easy to make, cost is low, sealing is good.It is simple in structure, assembles easy to usely, is a kind of ideal syringe rubber piston.
Claims (1)
1. syringe rubber piston, it is characterized in that: its main body is cylindrical, and the outside is provided with three all ring-type boss, and the top is a flat-top, and inside is the stairstepping cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040590 CN2708918Y (en) | 2004-05-12 | 2004-05-12 | Rubber plastic piston of injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420040590 CN2708918Y (en) | 2004-05-12 | 2004-05-12 | Rubber plastic piston of injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2708918Y true CN2708918Y (en) | 2005-07-13 |
Family
ID=34850627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420040590 Expired - Fee Related CN2708918Y (en) | 2004-05-12 | 2004-05-12 | Rubber plastic piston of injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2708918Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964030A (en) * | 2017-04-19 | 2017-07-21 | 深圳安科高技术股份有限公司 | A kind of piston for injector device |
-
2004
- 2004-05-12 CN CN 200420040590 patent/CN2708918Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106964030A (en) * | 2017-04-19 | 2017-07-21 | 深圳安科高技术股份有限公司 | A kind of piston for injector device |
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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 |