CN102940921A - Powder-injection mixing pre-filled and sealed injector structure - Google Patents
Powder-injection mixing pre-filled and sealed injector structure Download PDFInfo
- Publication number
- CN102940921A CN102940921A CN2012104216631A CN201210421663A CN102940921A CN 102940921 A CN102940921 A CN 102940921A CN 2012104216631 A CN2012104216631 A CN 2012104216631A CN 201210421663 A CN201210421663 A CN 201210421663A CN 102940921 A CN102940921 A CN 102940921A
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- piston
- cavity
- overcoat
- upper piston
- inwall
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Abstract
The invention provides a powder-injection mixing pre-filled and sealed injector structure which is simple in structure, simple in filling of a solute and a solvent, low in production cost and easy for batch production. The powder-injection mixing pre-filled and sealed injector structure comprises a core rod, an outer sleeve and pistons, and is characterized in that the two pistons are an upper piston and a lower piston respectively; the outer sleeve is divided into two parts of a front small-bore cavity and a rear large-bore cavity; the upper piston is sleeved at the lower part of the core rod; the annular surface of the upper piston clings to the inner wall of the rear large-bore cavity; the upper piston is connected with the lower piston through a connecting rod; and the annular surface of the lower piston clings to the inner wall of the front small-bore cavity.
Description
Technical field
The present invention relates to the technical field of syringe construction, be specially the mixed medicine pre-encapsulated injector structure of injectable powder.
Background technology
To extract solvent (water for injection etc.) out with syringe first in traditional injector operations process, again syringe needle is penetrated solute bottle (injectable powder or aqueous injection), then release solvent and mix with solute and dissolve, extract again at last admixing medical solutions out and could inject or to dosing in the infusion bottle human body in the syringe.This operational approach not only program is complicated, and nurse's amount of labour is large, and medicinal liquid will through shifting several times, easily pollute.The most important thing is easily to occur causing the generation of malpractice because of wrong medicine, until jeopardize patient's life security.
Existing pre-encapsulated injector, they all are to be potted in the syringe after medicine is prepared.Because this pre-encapsulated injector is produced patient's use there is the regular hour, because mix in syringe for a long time after solvent and solute mix and cause solvent and solvent hybrid reaction or solvent and solute hybrid reaction or solute and solute hybrid reaction or solute and solvent qualitative change, this also just reduces the side effect that drug effect also has medicine simultaneously.
Existing injectable powder mixes the medicine pre-encapsulated injector, and their structure is very complicated, solute and solvent fill trouble, and mixed drug anesthesia is tired of before the injection, production cost is very high, is difficult to realize mass production.
Summary of the invention
For the problems referred to above, the invention provides the mixed medicine pre-encapsulated injector structure of injectable powder, it is simple in structure, and solute and solvent fill are simple, and production cost is low, easily realizes mass production.
Injectable powder mixes medicine pre-encapsulated injector structure, its technical scheme is such: it comprises core bar, overcoat, piston, it is characterized in that: described piston has two, be respectively upper piston, lower piston, described overcoat is divided into two parts: anterior small-bore cavity, rear portion heavy caliber cavity, the bottom of described core bar is set with described upper piston, the anchor ring of described upper piston is close to the inwall of described rear portion heavy caliber cavity, described upper piston connects lower piston by connecting rod, the anchor ring of described lower piston is close to the inwall of described anterior small-bore cavity, the circle diameter of described lower piston is less than the internal diameter of described rear portion heavy caliber cavity, the formed cavity of the small-bore cavity inner wall of the lower surface of described lower piston and described front portion is the molten chamber of solute, the upper surface of described lower piston, the lower surface of upper piston, and the formed cavity of the inwall of overcoat between the two is the molten chamber of solvent, the tail end inwall of described overcoat is provided with spacing ring, the front end place of portalling of the described overcoat stopper that has been threaded.
It is further characterized in that: described upper piston is threaded connection the lower end of described core bar.
After using structure of the present invention, with the solute fill in the molten intracavity of solute, with the solvent fill in the molten intracavity of solvent, so just form the mixed medicine pre-encapsulated injector of injectable powder, packaging sterilizing is waited to go on the market, when needing to use, the pulling core bar, upper piston is pulled to the position of the spacing ring of overcoat, the effect of spacing ring is to prevent that upper piston is pulled the position that surpasses restriction when the pulling piston, and lower piston also was pulled mobile backward when upper piston was pulled; Be pulled to the position of spacing ring when upper piston, lower piston also enters in the heavy caliber cavity of rear portion, lower piston and rear portion heavy caliber cavity inner wall form the slit, the molten chamber of solvent, the molten chamber of solute is interconnected by this slit, the solvent of the molten intracavity of solvent enters into the molten chamber of solute smoothly, core bar pushes lower piston in the inwall of anterior small-bore cavity of overcoat afterwards, the mixed medicine pre-encapsulated injector of vibrations makes solvent and solute at mixed medicine pre-encapsulated injector mix homogeneously, spin off stopper, promote the drain gas in the molten chamber of solute of core bar, the injector is injected at once, throw away after the injection, it is simple in structure, and solute and solvent fill are simple at once, production cost is low, easily realizes mass production.
Description of drawings
Fig. 1 is front view sectional structure schematic diagram of the present invention.
The specific embodiment
See Fig. 1, it comprises core bar 1, overcoat 2, piston, piston has two, be respectively upper piston 3, lower piston 4, overcoat is divided into two parts: anterior small-bore cavity 5, rear portion heavy caliber cavity 6, the bottom of core bar 1 is set with upper piston 3, the anchor ring of upper piston 3 is close to the inwall of rear portion heavy caliber cavity 6, upper piston 3 connects lower piston 4 by connecting rod 7, the anchor ring of lower piston 4 is close to the inwall of anterior small-bore cavity 5, the circle diameter of lower piston 4 is less than the internal diameter of rear portion heavy caliber cavity 6, the lower surface of lower piston 4 and the formed cavity of anterior small-bore cavity 5 inwalls are the molten chamber 8 of solute, the upper surface of lower piston 4, the lower surface of upper piston 3, and the formed cavity of the inwall of overcoat between the two 2 is the molten chamber 9 of solvent, and the tail end inwall of overcoat 2 is provided with spacing ring 10.The front end of overcoat 2 place's 11 stoppers 12 that have been threaded that portal.Upper piston 3 is threaded connection the lower end of core bar 1.
Claims (2)
1. injectable powder mixes medicine pre-encapsulated injector structure, it comprises core bar, overcoat, piston, it is characterized in that: described piston has two, be respectively upper piston, lower piston, described overcoat is divided into two parts: anterior small-bore cavity, rear portion heavy caliber cavity, the bottom of described core bar is set with described upper piston, the anchor ring of described upper piston is close to the inwall of described rear portion heavy caliber cavity, described upper piston connects lower piston by connecting rod, the anchor ring of described lower piston is close to the inwall of described anterior small-bore cavity, the circle diameter of described lower piston is less than the internal diameter of described rear portion heavy caliber cavity, the formed cavity of the small-bore cavity inner wall of the lower surface of described lower piston and described front portion is the molten chamber of solute, the upper surface of described lower piston, the lower surface of upper piston, and the formed cavity of the inwall of overcoat between the two is the molten chamber of solvent, the tail end inwall of described overcoat is provided with spacing ring, the front end place of portalling of the described overcoat stopper that has been threaded.
2. injectable powder according to claim 1 mixes medicine pre-encapsulated injector structure, and it is characterized in that: described upper piston is threaded connection the lower end of described core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104216631A CN102940921A (en) | 2012-10-30 | 2012-10-30 | Powder-injection mixing pre-filled and sealed injector structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104216631A CN102940921A (en) | 2012-10-30 | 2012-10-30 | Powder-injection mixing pre-filled and sealed injector structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102940921A true CN102940921A (en) | 2013-02-27 |
Family
ID=47723973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104216631A Pending CN102940921A (en) | 2012-10-30 | 2012-10-30 | Powder-injection mixing pre-filled and sealed injector structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102940921A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880117Y (en) * | 2005-11-30 | 2007-03-21 | 湖南千山制药机械股份有限公司 | Double-chamber perfilling injector with sealing cap |
| CN202844260U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Injection mixing pre-filling and pre-sealing injector structure |
-
2012
- 2012-10-30 CN CN2012104216631A patent/CN102940921A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880117Y (en) * | 2005-11-30 | 2007-03-21 | 湖南千山制药机械股份有限公司 | Double-chamber perfilling injector with sealing cap |
| CN202844260U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Injection mixing pre-filling and pre-sealing injector structure |
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| PB01 | Publication | ||
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130227 |