CN202437886U - Disposable needle tube - Google Patents
Disposable needle tube Download PDFInfo
- Publication number
- CN202437886U CN202437886U CN201220017464XU CN201220017464U CN202437886U CN 202437886 U CN202437886 U CN 202437886U CN 201220017464X U CN201220017464X U CN 201220017464XU CN 201220017464 U CN201220017464 U CN 201220017464U CN 202437886 U CN202437886 U CN 202437886U
- Authority
- CN
- China
- Prior art keywords
- needle tube
- push rod
- tube body
- big
- boss
- 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 syringe, in particular to a disposable needle tube which comprises a needle tube body and a push rod, wherein a chamber is arranged at an internal included angle of the upper surface and the outer surface of the cylindrical body of the needle tube body, an annular boss is arranged in the upper end of the needle tube body, and an inner conical surface which is big in the upper and small in the lower is arranged on the inner diameter surface of the boss; and a plunger plug is arranged at the upper end of the push rod, the lower end of the push rod is connected with the plunger plug through 1-3 connecting posts, an outer conical surface which is small in the upper and big in the lower is arranged at the upper end of the plunger plug, and an annular groove is under the large end of the outer conical surface. The disposable needle tube is simple in structure, convenient and practical, and realizes the disposable purpose.
Description
Technical field
This utility model relates to a kind of syringe, particularly relates to a kind of disposable needle tubing.
Background technology
In the PMI treatment, drug administration by injection is one of main administering mode, and injection needle is important injection tool; After use,, be easy to reuse, cause cross-contamination because of inadvertent if do not abandon immediately; Harm patient's health; And in the needle tubing of present usefulness,, can not effectively prevent its recycling because of reasons in structure.
Summary of the invention
Can not effectively prevent the problem that reuses in order to solve injection needle, this utility model provides a kind of disposable needle tubing.
The technical scheme of this utility model is following: this disposable needle tubing comprises needle tube body and push rod; The angle is provided with a chamfering in the cylinder upper surface of needle tube body and the outer surface, and needle tube body has an annular boss in the upper end, and the boss aperture surface has up big and down small inner conical surface; Push rod upper end be a stopper head, and the push rod lower end is connected with stopper head through 1 ~ 3 joint pin, and up-small and down-big male cone (strobilus masculinus) is arranged on the stopper head, annular groove is arranged below the big end of male cone (strobilus masculinus).
This utility model is on the basis of original needle tubing; Be provided with the push rod of pressure that can only the bearing certain pressure scope in the middle of the push rod, when thrust or pulling force are excessive, just force this push rod fracture; Needle tube body upper end set inside has annular boss; After push rod passes through annular boss, just can't retreat, force this disposable needle tubing to scrap.This utility model is simple in structure, and is convenient and practical, realized disposable function.
Description of drawings
Fig. 1 is the generalized section of needle tubing;
Among the figure: 1, push rod; 2, needle tube body; 3, stopper head; 4, joint pin; 5, boss; 6, chamfering, 7, annular groove.
The specific embodiment
This disposable needle tubing comprises needle tube body 2 and push rod 1, and push rod 1 upper end is a stopper head 3, and the lower end is connected with stopper head 3 through 1 ~ 3 joint pin 4, and when thrust or pulling force during greater than normal value, joint pin 4 ruptures.There is up-small and down-big male cone (strobilus masculinus) stopper head 3 upper ends, annular groove 7 are arranged below the big end of male cone (strobilus masculinus), and the male cone (strobilus masculinus) outside diameter is less than stopper head 3 overall diameter.The angle is provided with a chamfering 6 in the cylinder upper surface of needle tube body 2 and the outer surface, and the angle of the angle of chamfering 6 and stopper head 3 matches, and needle tube body has annular boss 5 in 2 upper ends; Boss 5 aperture surfaces have up big and down small inner conical surface; The angle of inner conical surface is less than the angle of boss male cone (strobilus masculinus), and when the male cone (strobilus masculinus) of stopper head 3 passed through the inner conical surface of boss 5, boss 5 just in time was stuck in annular groove 7; Stopper head 3 can't be retreated; Force this disposable needle tubing to scrap, can't reuse, and then improve not reproducible result of use.
Claims (1)
1. a disposable needle tubing comprises needle tube body and push rod, it is characterized in that: the angle is provided with a chamfering in the cylinder upper surface of said needle tube body and the outer surface, and needle tube body has an annular boss in the upper end, and the boss aperture surface has up big and down small inner conical surface; Said push rod upper end be a stopper head, and the push rod lower end is connected with stopper head through 1 ~ 3 joint pin, and up-small and down-big male cone (strobilus masculinus) is arranged on the stopper head, an annular groove is arranged below the big end of male cone (strobilus masculinus).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220017464XU CN202437886U (en) | 2012-01-16 | 2012-01-16 | Disposable needle tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220017464XU CN202437886U (en) | 2012-01-16 | 2012-01-16 | Disposable needle tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202437886U true CN202437886U (en) | 2012-09-19 |
Family
ID=46819343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220017464XU Expired - Fee Related CN202437886U (en) | 2012-01-16 | 2012-01-16 | Disposable needle tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202437886U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114901334A (en) * | 2019-11-06 | 2022-08-12 | 克鲁伊医疗有限公司 | Plunger rod and syringe suitable for compression failure |
-
2012
- 2012-01-16 CN CN201220017464XU patent/CN202437886U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114901334A (en) * | 2019-11-06 | 2022-08-12 | 克鲁伊医疗有限公司 | Plunger rod and syringe suitable for compression failure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20130116 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |