CN201022890Y - Low-resistance syringe rubber plug - Google Patents
Low-resistance syringe rubber plug Download PDFInfo
- Publication number
- CN201022890Y CN201022890Y CNU2007200832732U CN200720083273U CN201022890Y CN 201022890 Y CN201022890 Y CN 201022890Y CN U2007200832732 U CNU2007200832732 U CN U2007200832732U CN 200720083273 U CN200720083273 U CN 200720083273U CN 201022890 Y CN201022890 Y CN 201022890Y
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- CN
- China
- Prior art keywords
- plug
- injector
- utility
- model
- open slot
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- Expired - Lifetime
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Abstract
The utility model discloses a low-resistance injector plug, comprising a conical plug cap arranged on the top portion and a cylindrical plug body which is arranged on the bottom portion. The utility model is characterized in that the front pyramidal face of the conical plug cap is provided with an annular top notch, the back end face of the bottom portion of the cylindrical plug body is provided with an annular bottom notch, lips of the notches can be opened and contracted under elastic force, the bottom of the notch is used as a support. When the utility model is used by an injector, the external diameter of the lips of the plug will be opened or contracted along with the change of pressure difference of the inner and the outer of a casing of the injector. The bigger the pressure difference is, the closer the lips is pressed to the inner wall of the casing, which realizes that small shrink range can be employed between the casing and the plug without leakage, and resistance when the plug is sliding is small because of the small shrink range. As for the utility model, the co-operating way and size of a central bar of the injector and the plug is unchanged, and also a prior injector die is unchanged, but the sliding property of the injector is greatly improved, and low-resistance operation is realized.
Description
Technical field
This utility model relates to the syringe accessory, especially relates to a kind of injection with low resistance plug.
Background technology
Disposable syringe normally is made up of three parts of plug of plastic overcoat and core bar, rubber system, and the workman is enclosed within plug the head of core bar earlier, grips core bar then and plug is filled in the inner chamber of overcoat, has just formed a syringe.The tradition plug is made up of the cylindrical rubber plug body of top tapered plug medicated cap that is connected as a single entity and bottom, the base diameter of taper plug medicated cap is greater than the diameter of cylindrical rubber plug body, and respectively be processed with the bulge loop of the equal diameters of overall diameter and top tapered plug medicated cap with the bottom at the middle part of cylindrical rubber plug body sidewall, like this because the external diameter (being the base diameter of taper plug medicated cap) of plug is bigger than the internal diameter of overcoat, this interference fit that just relies on syringe realizes sealing, spur core bar back and forth, can drive plug and slide, thereby realize extracting and the fluidic purpose of force feed at the overcoat inner surface.The sealing that this interference fit realized between tradition plug and the overcoat is a kind of typical static sealing, and the external diameter that will lean on plug fully could be realized than the big certain amount of internal diameter of overcoat.The magnitude of interference is little, and sealing can be leaked during syringe work just most likely; The magnitude of interference is big, although used lubricant, it is heavy that core bar promotes to feel, resistance is big.Therefore, this plug of static sealing that leans on fully should guarantee to seal reliably, promote again the little contradiction of resistance with regard to existing.
Summary of the invention
The purpose of this utility model is to provide a kind of reliable, promotion resistance injection with low resistance plug little, simple in structure that seals.
The purpose of this utility model is achieved in that this utility model is made up of the taper plug medicated cap at top and the cylindrical rubber plug body of bottom, feature is to be processed with on the inner cone of taper plug medicated cap together or the annular top open slot together, be processed with on the rear end face of the bottom of cylindrical rubber plug body together or the circular bottom part open slot together, the lip of open slot can be to support to open or shrink with the bottom land under the effect of elastic force.
This utility model is owing to be processed with the annular top open slot on the inner cone of the taper plug medicated cap of traditional plug, on the rear end face of the bottom of cylindrical rubber plug body, be processed with the circular bottom part open slot, saved the bulge loop at the middle part of cylindrical rubber plug body sidewall, the lip external diameter that so just can make annular top open slot and circular bottom part open slot is all slightly greater than the internal diameter of overcoat, thereby guaranteeing has an initial sealing between plug and the overcoat inner chamber, increase along with overcoat inner chamber and ambient pressure difference, lip will be pressed to outer casing inner wall more, thereby guarantee the sealing of overcoat inner chamber.This utility model adopts dynamic seal (packing), and the self sealss of this open slot lip will change with the variation of pressure reduction, and pressure reduction is bigger, and sealing better.Because needing only less times greater than the internal diameter of overcoat, the external diameter of lip just can form initial sealing, the magnitude of interference between plug and the overcoat inner chamber can select very little just, plug just possesses self sealss, thereby the power that promotes the plug slip just can become very little, just, neither change fit system and size between original syringe core rod and the plug, also do not need to change the conventional injector mould, the sliding capability of syringe is improved greatly, realize the lower resistance operation.Therefore the utlity model has and seal reliable, little, the advantage of simple structure of promotion resistance, this utility model is a kind of novel rubber plug.
Description of drawings
Fig. 1 is the structural representation that partly cuts open of the present utility model;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is the upward view of Fig. 1.
The specific embodiment
Below in conjunction with embodiment and contrast accompanying drawing this utility model is described in further detail.
This utility model is made up of the taper plug medicated cap 1 at top and the cylindrical rubber plug body 2 of bottom, be processed with on the inner cone 3 of taper plug medicated cap 1 together or the annular top open slot 4 together, be processed with on the bottom of cylindrical rubber plug body 2 rear end face 6 together or the circular bottom part open slot 7 together, the preceding lip 5 of annular top open slot 4 can be to support to open or shrink with the bottom land under the effect of elastic force, and the back lip 8 of circular bottom part open slot 7 can be to support to open or shrink with the bottom land under the effect of elastic force.
The section shape of annular top open slot 4 and circular bottom part open slot 7 all can be any in triangle, semicircle, half elliptic, square, the trapezoidal or U-shaped.
Claims (2)
1. injection with low resistance plug, form by the taper plug medicated cap (1) at top and the cylindrical rubber plug body (2) of bottom, it is characterized in that: be processed with on the inner cone (3) of taper plug medicated cap (1) together or the annular top open slot (4) together, be processed with on the bottom rear end face (6) of cylindrical rubber plug body (2) together or the circular bottom part open slot (7) together, the anterior lip (5) of annular top open slot (4) can be to support to open or shrink with the bottom land under the effect of elastic force, and the back lip (8) of circular bottom part open slot (7) can be to support to open or shrink with the bottom land under the effect of elastic force.
2. injection with low resistance plug as claimed in claim 1 is characterized in that: the section shape of annular top open slot (4) and circular bottom part open slot (7) all can be any in triangle, semicircle, half elliptic, square, the trapezoidal or U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200832732U CN201022890Y (en) | 2007-01-19 | 2007-01-19 | Low-resistance syringe rubber plug |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200832732U CN201022890Y (en) | 2007-01-19 | 2007-01-19 | Low-resistance syringe rubber plug |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201022890Y true CN201022890Y (en) | 2008-02-20 |
Family
ID=39096746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200832732U Expired - Lifetime CN201022890Y (en) | 2007-01-19 | 2007-01-19 | Low-resistance syringe rubber plug |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201022890Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103656804A (en) * | 2014-01-08 | 2014-03-26 | 山东威高集团医用高分子制品股份有限公司 | Piston for injector |
| CN104906667A (en) * | 2015-06-05 | 2015-09-16 | 山东新华安得医疗用品有限公司 | Low-resistance syringe |
| CN104941040A (en) * | 2015-07-10 | 2015-09-30 | 常州市盈顺电子有限公司 | Low-resistance electronic injection syringe |
| CN105324143A (en) * | 2013-06-05 | 2016-02-10 | 因杰科托公司 | Piston for use a syringe with specific dimensional ratio of a sealing structure |
| CN105434168A (en) * | 2015-12-12 | 2016-03-30 | 上海宝舜医疗器械有限公司 | Low-resistance medicine mixing injector |
| CN105521540A (en) * | 2016-02-26 | 2016-04-27 | 杭羽扬 | Low-resistance injector |
| CN106943646A (en) * | 2011-11-02 | 2017-07-14 | 赛诺菲-安万特德国有限公司 | It is used for the piston of cartridge case in delivery device |
| CN107405089A (en) * | 2014-12-05 | 2017-11-28 | 波士顿科学国际有限公司 | Pressure sensitive seal wire |
-
2007
- 2007-01-19 CN CNU2007200832732U patent/CN201022890Y/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106943646A (en) * | 2011-11-02 | 2017-07-14 | 赛诺菲-安万特德国有限公司 | It is used for the piston of cartridge case in delivery device |
| US10751474B2 (en) | 2011-11-02 | 2020-08-25 | Sanofi-Aventis Deutschland Gmbh | Piston for a cartridge for use in a drug delivery device |
| CN106943646B (en) * | 2011-11-02 | 2020-04-14 | 赛诺菲-安万特德国有限公司 | Piston for a cartridge for use in a drug delivery device |
| CN105324143A (en) * | 2013-06-05 | 2016-02-10 | 因杰科托公司 | Piston for use a syringe with specific dimensional ratio of a sealing structure |
| US10569030B2 (en) | 2013-06-05 | 2020-02-25 | Injecto A/S | Piston for use as a syringe with specific dimensional ratio of a sealing structure |
| CN105324143B (en) * | 2013-06-05 | 2020-05-15 | 因杰科托集团公司 | Piston for syringe with sealing structure of specific dimensional proportion |
| CN103656804A (en) * | 2014-01-08 | 2014-03-26 | 山东威高集团医用高分子制品股份有限公司 | Piston for injector |
| CN107405089A (en) * | 2014-12-05 | 2017-11-28 | 波士顿科学国际有限公司 | Pressure sensitive seal wire |
| CN107405089B (en) * | 2014-12-05 | 2020-09-04 | 波士顿科学国际有限公司 | Pressure sensing guide wire |
| CN104906667A (en) * | 2015-06-05 | 2015-09-16 | 山东新华安得医疗用品有限公司 | Low-resistance syringe |
| CN104941040A (en) * | 2015-07-10 | 2015-09-30 | 常州市盈顺电子有限公司 | Low-resistance electronic injection syringe |
| CN105434168A (en) * | 2015-12-12 | 2016-03-30 | 上海宝舜医疗器械有限公司 | Low-resistance medicine mixing injector |
| CN105521540A (en) * | 2016-02-26 | 2016-04-27 | 杭羽扬 | Low-resistance injector |
| CN105521540B (en) * | 2016-02-26 | 2018-11-13 | 杭羽扬 | A kind of injection with low resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080220 |
|
| EXPY | Termination of patent right or utility model |