CN102940920B - Mixing pre-filled and sealed injector - Google Patents
Mixing pre-filled and sealed injector Download PDFInfo
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- CN102940920B CN102940920B CN201210421443.9A CN201210421443A CN102940920B CN 102940920 B CN102940920 B CN 102940920B CN 201210421443 A CN201210421443 A CN 201210421443A CN 102940920 B CN102940920 B CN 102940920B
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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 the pre-encapsulated injector of mixed medicine.
Background technology
In traditional injector operations process, first to extract solvent (water for injection etc.) out with syringe, again syringe needle is penetrated to solute bottle (injectable powder or aqueous injection), then release solvent and mix and dissolve with solute, finally extract again admixing medical solutions out to injecting or to dosing in infusion bottle human body in 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 to be all potted in syringe after medicine is prepared.Because this pre-encapsulated injector is produced patient and is used and to have the regular hour, owing to mixing and causing solvent and solvent hybrid reaction or solvent and solute hybrid reaction or solute and solute hybrid reaction or solute and solvent qualitative change in syringe for a long time after solvent and solute mixing, this also just reduces drug effect and also has the side effect of medicine simultaneously.
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, the invention provides the pre-encapsulated injector of mixed medicine, it is simple in structure, and solute and solvent fill are simple, and production cost is low, easily realizes mass production.
The pre-encapsulated injector of mixed medicine, its technical scheme is such: it comprises solute syringe, 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, between the inwall of the lower surface of described piston and the described overcoat of its underpart, form the molten chamber of solute, 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 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 is installed on described needle stand, described needle stand upper surface is lower than the upper surface of described spiral base, and form gap, the upper end of described pin is communicated to described gap, the upper cap of the described spiral base under preservation state is equipped with block, the lower cavity 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, described pin runs through the upper surface that extends described piston after described stop collar, the needle point of the described pin under preservation state does not contact with the upper surface of described piston, described in during mixing, block departs from described spiral base, the front end conehead of described solvent syringe is plugged in the described gap of described spiral base, 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 loaded in described spiral base by spacing ring.
Use after structure of the present invention, by solute fill in the molten intracavity of solute of solute syringe, by solvent fill in solvent syringe, packaging sterilizing is waited to go on the market, in the time of need to using, pull out block, the front end conehead of solvent syringe is inserted to the gap of spiral base, in process in the gap of the conehead insertion spiral base of solvent syringe, the conehead of solvent syringe heads on needle stand, pin moves forward, spring is compressed, the piston that needle point is pushed forward through solute syringe enters the molten chamber of solute, promote 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 internal pressure of the molten chamber of solute, molten chamber as the relative core bar of enlarging volume moves forward, after having injected, pull out solvent syringe, cover block, vibrations solute syringe 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, injector is injected at once, after injection, throw away at once, it is simple in structure, solute and solvent fill are simple, production cost is low, easily realize mass production.
Accompanying drawing explanation
Fig. 1 is the sectional structure schematic diagram under 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, between the inwall of the lower surface of piston 5 and the overcoat of its underpart 4, form the molten chamber 7 of solute, 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 upper end of pin 11, needle stand 10 upper surfaces are lower than the upper surface of spiral base 9, and form gap 12, the upper end of pin 11 is communicated to gap 12, the upper cap of the spiral base 9 under preservation state is equipped with block 13, the lower cavity of core bar 3 is provided with stop collar 14, the two ends of spring 17 are mounted on respectively the bottom face of needle stand 10, the upper surface of stop collar 14, pin 11 runs through the upper surface that extends piston 5 after stop collar 14, the needle point 18 of the pin 11 under preservation state does not contact with the upper surface of piston 5, the 13 disengaging spiral bases 9 of blocking a shot 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 loaded in spiral base 9 by spacing ring 25.
Solvent syringe 2 specifically comprises that core bar 21, overcoat 22, piston 23, stopper are (not shown in FIG., belong to existing mature structure), the inner chamber of overcoat 22 is equipped with core bar 21, the front end sleeve of core bar 21 is equipped with piston 23, the outer rim anchor ring of piston 23 is close to the inwall of overcoat 22, the front end conehead 19 of overcoat 22 is set with stopper, forms the molten chamber 24 of solvent between the inwall of the lower surface of piston 23 and the overcoat of its underpart 22; The outer end, top of spiral base 9 is provided with external screw thread 15, and installation anchor ring 16 inwalls of the front end conehead 19 of solvent syringe 2 are provided with female thread, the installation anchor ring 16 of solvent syringe 2 spiral base 9 that is threaded.
Claims (4)
1. mix the pre-encapsulated injector of medicine, it comprises solute syringe, solvent syringe, described solute syringe specifically comprises the first core bar, the first overcoat, first piston, the first stopper, the inner chamber of described the first overcoat is equipped with described the first core bar, the front end sleeve of described the first core bar is equipped with described first piston, the outer rim anchor ring of described first piston is close to the inwall of described the first overcoat, between the inwall of described first overcoat of the lower surface of described first piston and its underpart, form the molten chamber of solute, the front end exit of described the first overcoat is set with described the first stopper, it is characterized in that: the top of the first core bar of described solute syringe is provided with 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 is installed on described needle stand, described needle stand upper surface is lower than the upper surface of described spiral base, and form gap, the upper end of described pin is communicated to described gap, the upper cap of the described spiral base under preservation state is equipped with block, the lower cavity of described the first 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, described pin runs through the upper surface that extends described first piston after described stop collar, the needle point of the described pin under preservation state does not contact with the upper surface of described first piston, described in during mixing, block departs from described spiral base, the front end conehead of described solvent syringe is plugged in the described gap of described spiral base, the liquid outlet of described solvent syringe is communicated with described gap.
2. the pre-encapsulated injector of mixed medicine according to claim 1, it is characterized in that: described solvent syringe specifically comprises the second core bar, the second overcoat, the second piston, the second stopper, the inner chamber of described the second overcoat is equipped with described the second core bar, the front end sleeve of described the second core bar is equipped with described the second piston, the outer rim anchor ring of described the second piston is close to the inwall of described the second overcoat, the front-end-cone headgear of described the second overcoat is equipped with described the second stopper, forms the molten chamber of solvent between the inwall of described second overcoat of the lower surface of described the second piston and its underpart.
3. the pre-encapsulated injector of mixed medicine 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. the pre-encapsulated injector of mixed medicine according to claim 3, is characterized in that: described needle stand is loaded in described spiral base by spacing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421443.9A CN102940920B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421443.9A CN102940920B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102940920A CN102940920A (en) | 2013-02-27 |
| CN102940920B true CN102940920B (en) | 2014-10-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210421443.9A Active CN102940920B (en) | 2012-10-30 | 2012-10-30 | Mixing pre-filled and sealed injector |
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| Country | Link |
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| CN (1) | CN102940920B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109350515B (en) * | 2018-11-16 | 2024-05-14 | 阳普医疗（湖南）有限公司 | Injection syringe |
| CN109533669B (en) * | 2018-12-04 | 2021-01-19 | 广州颐美生物科技有限公司 | Injection type mask without added preservative |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130356A (en) * | 1994-05-25 | 1996-09-04 | 加布里尔·迈耶尔 | Device for preparation of solution, suspension or emulsion of medical substance |
| CN1378466A (en) * | 1999-10-13 | 2002-11-06 | 科学研究和应用咨询公司 | Device for reconstituting a therapeutic solution suspension or dispersion |
| EP1913966A1 (en) * | 2006-10-17 | 2008-04-23 | Arte Corporation | Combined container-syringe |
| CN202844258U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Pre-filled injector for blending drugs |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB0705388D0 (en) * | 2007-03-21 | 2007-04-25 | Medical House Plc The | Improved autoinjector |
-
2012
- 2012-10-30 CN CN201210421443.9A patent/CN102940920B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1130356A (en) * | 1994-05-25 | 1996-09-04 | 加布里尔·迈耶尔 | Device for preparation of solution, suspension or emulsion of medical substance |
| CN1378466A (en) * | 1999-10-13 | 2002-11-06 | 科学研究和应用咨询公司 | Device for reconstituting a therapeutic solution suspension or dispersion |
| EP1913966A1 (en) * | 2006-10-17 | 2008-04-23 | Arte Corporation | Combined container-syringe |
| CN202844258U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Pre-filled injector for blending drugs |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102940920A (en) | 2013-02-27 |
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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. |