CN202982810U - Structure of mixed drug pre-filled syringe - Google Patents
Structure of mixed drug pre-filled syringe Download PDFInfo
- Publication number
- CN202982810U CN202982810U CN 201220559901 CN201220559901U CN202982810U CN 202982810 U CN202982810 U CN 202982810U CN 201220559901 CN201220559901 CN 201220559901 CN 201220559901 U CN201220559901 U CN 201220559901U CN 202982810 U CN202982810 U CN 202982810U
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- China
- Prior art keywords
- piston
- overcoat
- upper piston
- slotted hole
- lower piston
- 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.)
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Abstract
The utility model provides a structure of a mixed drug pre-filled syringe. The structure of the mixed drug pre-filled syringe comprises a core rod, an outer cover and pistons and is characterized in that the two pistons comprise an upper piston and a lower piston; the upper piston which is sleeved outside the lower portion of core rod is connected with the lower piston through a connecting rod; a long hole is formed on the lateral wall of the middle of the outer cover; a position of the long hole, which is corresponding to the outer wall, is provided with a rubber sleeve in a covering mode; the long hole is located between the upper piston and the lower piston which are both closely attached to the inner wall of the outer cover; and the lower surface of the lower piston and the inner wall of the outer cover are formed into a chamber namely a solute dissolved chamber and the inner wall of the outer cover is arranged on the lower portion of the lower surface of the lower piston. The structure of the mixed drug pre-filled syringe has the advantages of being simple in structure, simple to fill solutes and solvents, low in production cost and easy to achieve mass production.
Description
Technical field
This utility model relates to the technical field of syringe construction, is specially a kind of mixed medicine pre-encapsulated injector structure.
Background technology
First to extract solvent (water for injection etc.) out with syringe 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 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 are all to be potted in syringe after medicine is prepared.Because this pre-encapsulated injector is produced patient and is used the regular hour is arranged, cause solvent and solvent hybrid reaction or solvent and solute hybrid reaction or solute and solute hybrid reaction or solute and solvent qualitative change owing to mixing in syringe for a long time after solvent and solute mixing, this also just reduces drug effect and also has simultaneously the side effect of medicine.
Existing mixed medicine pre-encapsulated injector, their structure is very complicated, solute and solvent fill trouble, before injection, mixed drug anesthesia is tired of, production cost is very high, is difficult to realize mass production.
Summary of the invention
For the problems referred to above, this utility model provides a kind of mixed medicine pre-encapsulated injector structure, and it is simple in structure, and solute and solvent fill are simple, and production cost is low, easily realizes mass production.
a kind of mixed 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, the bottom of described core bar is set with described upper piston, described upper piston connects lower piston by connecting rod, the medium position sidewall of described overcoat has slotted hole, the corresponding outer wall place of described slotted hole has mounted cover gum cover, the position of described slotted hole is positioned at described upper piston, between lower piston, described upper piston, lower piston all is close to the inwall of described overcoat, the formed cavity of the inwall of the lower surface of described lower piston and the described overcoat of its underpart is solute molten chamber, 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 solvent molten chamber, 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 the be threaded lower end of described core bar;
Described slotted hole is two, and two described slotted holes are arranged symmetrically with about the central shaft of described overcoat, and described gum cover correspondence mounts cover in described slotted hole outer wall.
after using structure of the present utility model, 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, pull 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 pulling piston, and when upper piston is pulled, lower piston also is pulled and moves up, be pulled to the position of spacing ring when upper piston, the position of lower piston is positioned at the slotted hole place, form the gap between the corresponding gum cover of lower piston and slotted hole, the molten chamber of solvent, the molten chamber of solute is interconnected by this gap, the solvent of the molten intracavity of solvent enters into solute molten chamber smoothly, core bar pushes lower piston in the inwall of overcoat slotted hole below 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 injection at once, it is simple in structure, solute and solvent fill are simple, production cost is low, easily realize mass production.
Description of drawings
Fig. 1 is front view sectional structure schematic diagram of the present utility model.
The specific embodiment
See Fig. 1, it comprises core bar 1, overcoat 2, piston, and piston has two, is respectively upper piston 3, lower piston 4, the bottom of core bar 1 is set with upper piston 3, upper piston 3 connects lower pistons 4 by connecting rod 5, and the medium position sidewall of overcoat 2 has slotted hole 6, and the corresponding outer wall place of slotted hole 6 has mounted cover gum cover 7, the position of slotted hole 6 is between upper piston 3, lower piston 4, slotted hole 6 is two, and two slotted holes 6 are arranged symmetrically with about the central shaft of overcoat 2, and gum cover 7 correspondences mount cover in slotted hole 6 outer walls.Upper piston 3, lower piston 4 all are close to the inwall of overcoat 2, the formed cavity of the inwall of the lower surface of lower piston 4 and the overcoat of its underpart 2 is solute molten chamber 8, the formed cavity of the inwall of the lower surface of the upper surface of lower piston 4, upper piston 3 and overcoat between the two 2 is solvent molten chamber 9, 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.The be threaded lower end of core bar 1 of upper piston 3.
Claims (3)
1. mixed 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, the bottom of described core bar is set with described upper piston, described upper piston connects lower piston by connecting rod, the medium position sidewall of described overcoat has slotted hole, the corresponding outer wall place of described slotted hole has mounted cover gum cover, the position of described slotted hole is positioned at described upper piston, between lower piston, described upper piston, lower piston all is close to the inwall of described overcoat, the formed cavity of the inwall of the lower surface of described lower piston and the described overcoat of its underpart is solute molten chamber, 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 solvent molten chamber, 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. a kind of mixed medicine pre-encapsulated injector structure according to claim 1 is characterized in that: described upper piston the be threaded lower end of described core bar.
3. a kind of mixed medicine pre-encapsulated injector structure according to claim 2, it is characterized in that: described slotted hole is two, and two described slotted holes are arranged symmetrically with about the central shaft of described overcoat, and described gum cover correspondence mounts cover in described slotted hole outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220559901 CN202982810U (en) | 2012-10-30 | 2012-10-30 | Structure of mixed drug pre-filled syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220559901 CN202982810U (en) | 2012-10-30 | 2012-10-30 | Structure of mixed drug pre-filled syringe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202982810U true CN202982810U (en) | 2013-06-12 |
Family
ID=48554044
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220559901 Expired - Fee Related CN202982810U (en) | 2012-10-30 | 2012-10-30 | Structure of mixed drug pre-filled syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202982810U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921071A (en) * | 2012-10-30 | 2013-02-13 | 无锡耐思生物科技有限公司 | Mixing and prefilling syringe structure |
-
2012
- 2012-10-30 CN CN 201220559901 patent/CN202982810U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102921071A (en) * | 2012-10-30 | 2013-02-13 | 无锡耐思生物科技有限公司 | Mixing and prefilling syringe structure |
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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: 20130612 Termination date: 20151030 |
|
| EXPY | Termination of patent right or utility model |