CN102940922A - Mixing pre-filled and sealed injector - Google Patents
Mixing pre-filled and sealed injector Download PDFInfo
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- CN102940922A CN102940922A CN2012104217441A CN201210421744A CN102940922A CN 102940922 A CN102940922 A CN 102940922A CN 2012104217441 A CN2012104217441 A CN 2012104217441A CN 201210421744 A CN201210421744 A CN 201210421744A CN 102940922 A CN102940922 A CN 102940922A
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- piston
- overcoat
- solute
- syringe
- solvent
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Abstract
The invention provides a mixing pre-filled and sealed injector, which is simple in structure, simple in filling of a solute and a solvent, low in production cost and easy for batch production. The mixing pre-filled and sealed injector comprises a solute injector and a solvent injector, wherein the solute injector specifically comprises a core rod, an outer sleeve, a piston and a plug; the core rod is mounted in an inner cavity of the outer sleeve; the piston is sleeved at the front end of the core rod; the annular surface of the outer edge of the piston clings to the inner wall of the outer sleeve; a solute cavity is formed between the lower end surface of the piston and the inner wall of the outer sleeve at the lower part of the piston; and the plug is sleeved at a front-end outlet of the outer sleeve. The mixing pre-filled and sealed injector is characterized in that an inner ring clamping groove is formed in the top of the core rod of the solute injector; the lower end of a screw seat is clamped and sleeved into the inner ring clamping groove; a needle seat is sleeved in the screw seat; the upper end of a needle is mounted on the needle seat in a fastened way; the upper end surface of the needle seat is lower than that of the screw seat and a gap is formed; and the upper end of the needle is communicated to the gap.
Description
Technical field
The present invention relates to the technical field of syringe construction, be specially mixed medicine pre-encapsulated injector.
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, pollute easily.The most important thing is to occur easily 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 mixed medicine pre-encapsulated injector, their structure is very complicated, solute and solvent fill trouble, mixed drug anesthesia is tired of that production cost is very high before the injection, is difficult to realize mass production.
Summary of the invention
For the problems referred to above, the invention provides mixed medicine pre-encapsulated injector, it is simple in structure, and solute and solvent fill are simple, and production cost is low, easily realizes mass production.
Mixed medicine pre-encapsulated injector, its technical scheme is such: it comprises the solute syringe, the solvent syringe, described solute syringe specifically comprises core bar, overcoat, piston, stopper, the inner chamber of described overcoat is equipped with described core bar, the front end sleeve of described core bar is equipped with described piston, the outer rim anchor ring of described piston is close to the inwall of described overcoat, form the molten chamber of solute between the inwall of the lower surface of described piston and the described overcoat of its underpart, the front end exit of described overcoat is set with described stopper, it is characterized in that: the top of the core bar of described solute syringe is provided with the internal ring draw-in groove, the lower end cutting ferrule of spiral base is in described internal ring draw-in groove, the internal sleeve of described spiral base is equipped with needle stand, the upper end of pin is fastening to be installed on described needle stand, described needle stand upper surface is lower than the upper surface of described spiral base, and formation gap, the upper end of described pin is communicated to described gap, the upper cap of the described spiral base under the preservation state is equipped with block, the cavity bottom of described core bar is provided with stop collar, the two ends of spring are mounted on respectively the bottom face of described needle stand, the upper surface of described stop collar, the center of described stop collar is provided with collar aperture, be set with sleeve pipe in the described collar aperture, described pin runs through the upper surface that extends described piston behind the described sleeve pipe, the needle point of the described pin under the preservation state does not contact with the upper surface of described piston, described block breaks away from described spiral base during mixing, the front end conehead of described solvent syringe is plugged in the described gap of described spiral base, and the liquid outlet of described solvent syringe is communicated with described gap.
It is further characterized in that: described solvent syringe specifically comprises core bar, overcoat, piston, stopper, the inner chamber of described overcoat is equipped with described core bar, the front end sleeve of described core bar is equipped with described piston, the outer rim anchor ring of described piston is close to the inwall of described overcoat, the front-end-cone headgear of described overcoat is equipped with described stopper, forms the molten chamber of solvent between the inwall of the lower surface of described piston and the described overcoat of its underpart;
The outer end, top of described spiral base is provided with external screw thread, and the installation anchor ring inwall of the front end conehead of described solvent syringe is provided with female thread, the installation anchor ring of the described solvent syringe described spiral base that is threaded;
Described needle stand is installed on described spiral base by spacing ring.
After using structure of the present invention, with the solute fill in the molten intracavity of the solute of solute syringe, with the solvent fill in the solvent syringe, packaging sterilizing is waited to go on the market, when needing to use, pull out block, the front end conehead of solvent syringe is inserted the gap of spiral base, the conehead of solvent syringe heads on needle stand in the process in the gap of the conehead insertion spiral base of solvent syringe, pin moves forward, spring is compressed, needle point is pushed the piston that passes forward the solute syringe and enters the molten chamber of solute, promote the solvent syringe, solvent enters the molten chamber of solute through pin, the solvent in the molten chamber of solute constantly increases, be enclosed within outward under the molten chamber molten intracavity of the solute section pressure and move forward for the relative core bar of enlarging volume, inject and pull out the solvent syringe after finishing, cover block, vibrations solute syringe makes solvent and solute at mixed medicine pre-encapsulated injector mix homogeneously, spins off stopper, the drain gas in the molten chamber of solute of promotion 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 the sectional structure sketch map under the admixture of the present invention;
Fig. 2 is the front view structural representation of solute syringe of the present invention.
The specific embodiment
See Fig. 1, Fig. 2, it comprises solute syringe 1, solvent syringe 2, solute syringe 1 specifically comprises core bar 3, overcoat 4, piston 5, stopper 6, the inner chamber of overcoat 4 is equipped with core bar 3, the front end sleeve of core bar 3 is equipped with piston 5, the outer rim anchor ring of piston 5 is close to the inwall of overcoat 4, form the molten chamber 7 of solute between the inwall of the lower surface of piston 5 and the overcoat of its underpart 4, the front end exit of overcoat 4 is set with stopper 6, the top of the core bar 3 of solute syringe 1 is provided with internal ring draw-in groove 8, the lower end cutting ferrule of spiral base 9 is in internal ring draw-in groove 8, the internal sleeve of spiral base 9 is equipped with needle stand 10, the fastening needle stand 10 that is installed in the upper end of pin 11, needle stand 10 upper surfaces are lower than the upper surface of spiral base 9, and formation gap 12, the upper end of pin 11 is communicated to gap 12, the upper cap of the spiral base 9 under the preservation state is equipped with block 13, the cavity bottom of core bar 3 is provided with stop collar 14, the two ends of spring 15 are mounted on respectively the bottom face of needle stand 10, the upper surface of stop collar 14, the center of stop collar 14 is provided with collar aperture 16, be set with sleeve pipe 17 in the collar aperture 16, pin 11 runs through the upper surface that extends piston 5 behind the sleeve pipe 17, the needle point 18 of the pin 11 under the preservation state does not contact with the upper surface of piston 5, block 13 breaks away from spiral base 9 during mixing, the front end conehead 19 of solvent syringe 2 is plugged in the gap 12 of spiral base 9, liquid outlet 20 communication gap 12 of solvent syringe 2.Needle stand 10 is installed on spiral base 9 by spacing ring 27.
Claims (4)
1. mix the medicine pre-encapsulated injector, it comprises the solute syringe, the solvent syringe, described solute syringe specifically comprises core bar, overcoat, piston, stopper, the inner chamber of described overcoat is equipped with described core bar, the front end sleeve of described core bar is equipped with described piston, the outer rim anchor ring of described piston is close to the inwall of described overcoat, form the molten chamber of solute between the inwall of the lower surface of described piston and the described overcoat of its underpart, the front end exit of described overcoat is set with described stopper, it is characterized in that: the top of the core bar of described solute syringe is provided with the internal ring draw-in groove, the lower end cutting ferrule of spiral base is in described internal ring draw-in groove, the internal sleeve of described spiral base is equipped with needle stand, the upper end of pin is fastening to be installed on described needle stand, described needle stand upper surface is lower than the upper surface of described spiral base, and formation gap, the upper end of described pin is communicated to described gap, the upper cap of the described spiral base under the preservation state is equipped with block, the cavity bottom of described core bar is provided with stop collar, the two ends of spring are mounted on respectively the bottom face of described needle stand, the upper surface of described stop collar, the center of described stop collar is provided with collar aperture, be set with sleeve pipe in the described collar aperture, described pin runs through the upper surface that extends described piston behind the described sleeve pipe, the needle point of the described pin under the preservation state does not contact with the upper surface of described piston, described block breaks away from described spiral base during mixing, the front end conehead of described solvent syringe is plugged in the described gap of described spiral base, and the liquid outlet of described solvent syringe is communicated with described gap.
2. mixed medicine pre-encapsulated injector according to claim 1, it is characterized in that: described solvent syringe specifically comprises core bar, overcoat, piston, stopper, the inner chamber of described overcoat is equipped with described core bar, the front end sleeve of described core bar is equipped with described piston, the outer rim anchor ring of described piston is close to the inwall of described overcoat, the front-end-cone headgear of described overcoat is equipped with described stopper, forms the molten chamber of solvent between the inwall of the lower surface of described piston and the described overcoat of its underpart.
3. mixed medicine pre-encapsulated injector according to claim 2, it is characterized in that: the outer end, top of described spiral base is provided with external screw thread, the installation anchor ring inwall of the front end conehead of described solvent syringe is provided with female thread, the installation anchor ring of the described solvent syringe described spiral base that is threaded.
4. mixed medicine pre-encapsulated injector according to claim 3, it is characterized in that: described needle stand is installed on described spiral base by spacing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421744.1A CN102940922B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421744.1A CN102940922B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102940922A true CN102940922A (en) | 2013-02-27 |
| CN102940922B CN102940922B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210421744.1A Active CN102940922B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
Country Status (1)
| Country | Link |
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| CN (1) | CN102940922B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3682174A (en) * | 1969-10-07 | 1972-08-08 | Milton J Cohen | Syringe for injection of freshly mixed liquid-powder |
| CN101244297A (en) * | 2007-02-14 | 2008-08-20 | 丁玉英 | Automatic medicine mixing device for powder injection |
| CN201200683Y (en) * | 2008-06-03 | 2009-03-04 | 中山博泰药械有限公司 | Powder injection sterilized injection syringe for mixing and pre-encapsulating medicament |
| CN202236671U (en) * | 2011-09-26 | 2012-05-30 | 吴林元 | Disposable syringe capable of realizing pre-perfusion of liquid medicine |
| CA2822582A1 (en) * | 2010-12-30 | 2012-07-05 | Meridian Medical Technologies, Inc. | Three-chambered autoinjector |
| CN202844257U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Mixed medicine pre-filling syringe |
-
2012
- 2012-10-30 CN CN201210421744.1A patent/CN102940922B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3682174A (en) * | 1969-10-07 | 1972-08-08 | Milton J Cohen | Syringe for injection of freshly mixed liquid-powder |
| IL35336A (en) * | 1969-10-07 | 1973-08-29 | Century Disposable Devices | Syringe for injection of freshly mixed liquid-powder |
| CN101244297A (en) * | 2007-02-14 | 2008-08-20 | 丁玉英 | Automatic medicine mixing device for powder injection |
| CN201200683Y (en) * | 2008-06-03 | 2009-03-04 | 中山博泰药械有限公司 | Powder injection sterilized injection syringe for mixing and pre-encapsulating medicament |
| CA2822582A1 (en) * | 2010-12-30 | 2012-07-05 | Meridian Medical Technologies, Inc. | Three-chambered autoinjector |
| CN202236671U (en) * | 2011-09-26 | 2012-05-30 | 吴林元 | Disposable syringe capable of realizing pre-perfusion of liquid medicine |
| CN202844257U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Mixed medicine pre-filling syringe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102940922B (en) | 2014-11-05 |
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Address after: No. 530, Xida Road, Meicun Industrial Park, Xinwu District, Wuxi City, Jiangsu Province, 214112 Patentee after: Wuxi Naisi Life Technology Co.,Ltd. Address before: No. 230, Xida Road, Meicun Industrial Park, New District, Wuxi City, Jiangsu Province, 214000 Patentee before: NEST BIOTECHNOLOGY Co.,Ltd. |
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