CN2507470Y - Residueless self-destroying expendable injector - Google Patents
Residueless self-destroying expendable injector Download PDFInfo
- Publication number
- CN2507470Y CN2507470Y CN 01253753 CN01253753U CN2507470Y CN 2507470 Y CN2507470 Y CN 2507470Y CN 01253753 CN01253753 CN 01253753 CN 01253753 U CN01253753 U CN 01253753U CN 2507470 Y CN2507470 Y CN 2507470Y
- Authority
- CN
- China
- Prior art keywords
- rod
- needle holder
- injection
- syringe
- 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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Abstract
The utility model provides a non-persistent liquid self-destroying one-time syringe, which belongs to medical equipment, and solves the problem that residual liquid in an injection tube after the prior self-destroying one-time syringe is injected. The utility model is composed of an injection tube and an injection rod, a needle point stand is arranged on the front end of the injection tube, a needle point is sleeved with the needle point stand, the injection rod is composed of a rod head and a rod body, an easy abruption structure is adopted between the rod head and the rod body, an intercalation column is arranged on the upper portion of the rod head, the length of the intercalation column is a little longer than the needle point stand, the outer diameter of the intercalation column is a little smaller than the inter diameter of the needle point stand, a boss is arranged on the upper portion of the intercalation column, interference fit is adopted between the boss and an inner hole of the needle head stand. The intercalation column is inserted into the inner hole of the needle point stand after being injected, the residual liquid in the needle head stand can be decreased to minimum. Meanwhile, the syringe whose injection is finished is easy to clean, environmental pollution which is caused by liquid medicine can not occur, and has a higher practical value.
Description
Technical field
This utility model belongs to a kind of medical apparatus and instruments, particularly a kind of disposable syringe with self-destroying function.
Background technology
Re-use preventing once-used syringe is being widely used at present owing to characteristics such as safe in utilization, health, convenience.Now, many people design and have produced the re-use preventing once-used syringe of various different structures, much also applied for patent, " disposable syringe " that provides as Chinese patent 962 16578.6, it is that 2 symmetric convex thimbles utilizing the top of piston to be provided with have with the easy opening of the corresponding matrix of convex thimble with the top of syringe cylinder and match, when injecting liquid drug finished, the convex thimble backed down the easy opening of matrix, realized the purpose with the back self-destruction.Although the inventor finds syringe self-destruction after injecting liquid drug finishes, also there is a certain amount of medicinal liquid in the forward needle holder of injection tube.These residual medicinal liquids will be processed as rubbish together along with syringe, can't obtain utilizing.Though for single syringe residual medicinal liquid seldom because existing disposable syringe all exists this phenomenon, will be a surprising waste if add up.Simultaneously, residual medicinal liquid also can pollute environment.
Summary of the invention
The purpose of this utility model is the problem that debris is arranged in the injection tube after present existing injection finishes at existing re-use preventing once-used syringe, and a kind of noresidue liquid re-use preventing once-used syringe that improves structure is provided.
The purpose of this utility model is achieved like this: this noresidue liquid re-use preventing once-used syringe comprises the injection rod in injection tube and the injection tube, the front end of injection tube is a needle holder, pinhead sleeve is connected on the needle holder, injection rod comprises the bar head and the body of rod, adopt the syndeton of easily breaking between the bar head and the body of rod, bar head front portion is provided with an inserting column, the length of inserting column is slightly larger than the length of needle holder, the external diameter of inserting column is slightly less than the internal diameter of needle holder endoporus, the front end of inserting column is provided with a boss, is interference fit between boss and the needle holder endoporus.
This syringe is to rely on the structure of easily breaking between bar head and the body of rod bar head to be separated with the body of rod realize self-destruction.Because of the external diameter of the anterior inserting column of the bar head internal diameter less than the needle holder endoporus, in the syringe use, inserting column can insert in the needle holder.When injection was finished, the boss of inserting column front end will be by the endoporus of needle holder, the extended needle seat.Because between boss and the needle holder endoporus is interference fit,, therefore can stop the withdrawal of inserting column and injection rod from needle holder in case just be difficult to return after boss stretches out.If firmly spur injection rod, will cause the bar head of injection rod and separating of the body of rod, make the syringe self-destruction, reach disposable requirement.
Operated by rotary motion rubber stopper on the above-mentioned bar head.The effect of rubber stopper is the sealing of guaranteeing between injection rod and the injection tube, makes that the injection rod in the syringe can not leak out between injection rod and injection tube at the progradation herb liquid.
Usually adopt the connected mode of thin neck shape between the bar head and the body of rod.Because it is made of plastic that the bar head of injection rod and the body of rod generally make, and adopts the connection of thin neck shape, breaks than being easier to.
The profile of above-mentioned boss is a truncated cone-shaped, and its forward size is less.Help like this in the endoporus that boss enters needle holder, and the contact area between boss side surfaces and the endoporus is less, reduces the frictional resistance when advancing.
Compare with existing disposable syringe, the syringe that provides of the present utility model is because in injection finishes back inserting column insertion needle holder endoporus, debris in the needle holder is minimized, and having satisfactorily resolved existing disposable syringe has this problem of debris.Simultaneously, the syringe after finishing using is convenient to handle, and can not have higher utility because of medicinal liquid causes environmental pollution.
Description of drawings
Fig. 1 is this noresidue liquid re-use preventing once-used syringe cross-sectional view before use.
Fig. 2 is the cross-sectional view of this noresidue liquid re-use preventing once-used syringe after finishing using.
The specific embodiment
As shown in Figure 1, the noresidue liquid re-use preventing once-used syringe that this utility model provides comprises injection tube 2, injection rod 1 and syringe needle 4, and syringe needle 4 is socketed on the needle holder 3 of injection tube 2 front ends.In the present embodiment, injection rod 1 is made up of parts such as the body of rod 10, bar head 11 and inserting columns 5.Bar head 11 is thin neck shape with the junction of the body of rod 10, breaks easily.The rubber stopper 12 that is used to seal is enclosed within bar head 11, and the front end of inserting column 5 is a boss 6.The body of rod 10, bar head 11, inserting column 5 and boss 6 are connected as a single entity, and adopt the disposable shaping of plastics.
As shown in Figure 2, the profile of inserting column 5 is cylindric, and the length of inserting column 5 is slightly larger than the length of needle holder 3, but external diameter is less than the internal diameter of needle holder 3 endoporus, so inserting column 5 can insert needle holder 3 and boss 6 is stretched out.Boss 6 is a truncated cone-shaped, and forward size is less than the endoporus internal diameter of needle holder 3, and only the external diameter of rear portion maximum is slightly larger than the endoporus internal diameter of needle holder 3, makes between boss 6 and needle holder 3 endoporus and forms interference fit.Owing to adopt plastics to make, utilize the elasticity of plastics, boss 6 can pass through needle holder 3 endoporus and extended needle seat 3, but can't withdraw after stretching out.After syringe was finished using, syringe just was in state shown in Figure 2.During practical operation, the body of rod 10 of injection rod 1 can be pulled off, reach the requirement of self-destruction.After the syringe self-destruction, bar head 11, rubber stopper 12 and inserting column 5 still remain in the injection tube 2.Certainly, the residual liquor in the injection tube 2 does not have substantially.
Claims (6)
1, a kind of noresidue liquid re-use preventing once-used syringe, comprise the injection rod (1) in injection tube (2) and the injection tube (2), the front end of injection tube (2) is needle holder (3), syringe needle (4) is socketed on the needle holder (3), injection rod (1) comprises the bar head (11) and the body of rod (10), adopt the syndeton of easily breaking between the bar head (11) and the body of rod (10), it is characterized in that described bar head (10) front portion is provided with an inserting column (5), the length of inserting column (5) is slightly larger than the length of needle holder (3), the external diameter of inserting column (5) is slightly less than the internal diameter of needle holder (3) endoporus, the front end of inserting column (5) is provided with a boss (6), is interference fit between boss (6) and needle holder (3) endoporus.
2, noresidue liquid re-use preventing once-used syringe according to claim 1 is characterized in that being provided with on the described bar head (11) rubber stopper (12).
3, noresidue liquid re-use preventing once-used syringe according to claim 1 is characterized in that between the described bar head (11) and the body of rod (10) adopting the connected mode of thin neck shape.
4, according to claim 1,2 or 3 described noresidue liquid re-use preventing once-used syringes, the profile that it is characterized in that described boss (6) is a truncated cone-shaped, and its forward size is less.
5, according to claim 1,2 or 3 described noresidue liquid re-use preventing once-used syringes, it is characterized in that the profile of described inserting column (5) is cylindric.
6, noresidue liquid re-use preventing once-used syringe according to claim 4 is characterized in that the endoporus internal diameter of the forward size of described boss (6) less than needle holder (3), and only the external diameter of rear portion maximum is slightly larger than the endoporus internal diameter of needle holder (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253753 CN2507470Y (en) | 2001-09-15 | 2001-09-15 | Residueless self-destroying expendable injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01253753 CN2507470Y (en) | 2001-09-15 | 2001-09-15 | Residueless self-destroying expendable injector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2507470Y true CN2507470Y (en) | 2002-08-28 |
Family
ID=33663196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01253753 Expired - Fee Related CN2507470Y (en) | 2001-09-15 | 2001-09-15 | Residueless self-destroying expendable injector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2507470Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8071001B2 (en) | 2002-10-14 | 2011-12-06 | Boutech, Naamloze Vennotschap | Method and device for manufacturing plungers for medical syringes, plungers obtained thereby, as well as syringe for medical purposes |
| CN110680603A (en) * | 2019-11-04 | 2020-01-14 | 上海康德莱企业发展集团股份有限公司 | Precise injection device for ophthalmology department |
| CN110975065A (en) * | 2019-11-28 | 2020-04-10 | 王铁基 | Syringe of anticreep needle |
-
2001
- 2001-09-15 CN CN 01253753 patent/CN2507470Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8071001B2 (en) | 2002-10-14 | 2011-12-06 | Boutech, Naamloze Vennotschap | Method and device for manufacturing plungers for medical syringes, plungers obtained thereby, as well as syringe for medical purposes |
| CN110680603A (en) * | 2019-11-04 | 2020-01-14 | 上海康德莱企业发展集团股份有限公司 | Precise injection device for ophthalmology department |
| CN110975065A (en) * | 2019-11-28 | 2020-04-10 | 王铁基 | Syringe of anticreep needle |
| CN110975065B (en) * | 2019-11-28 | 2021-08-10 | 曹苏玲 | Syringe of anticreep needle |
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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 |