CN102961803B - Disposable prefilled syringe - Google Patents
Disposable prefilled syringe Download PDFInfo
- Publication number
- CN102961803B CN102961803B CN201210421699.XA CN201210421699A CN102961803B CN 102961803 B CN102961803 B CN 102961803B CN 201210421699 A CN201210421699 A CN 201210421699A CN 102961803 B CN102961803 B CN 102961803B
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- China
- Prior art keywords
- passage
- female thread
- cap
- core bar
- screw
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Abstract
The invention provides a disposable prefilled syringe which makes ensure liquid medicine is mixed uniformly and is not polluted. The disposable prefilled syringe comprises a mandrel and an outer cover; the mandrel is sleeved in an inner hole of the outer cover; the front end of the mandrel is sleeved with a piston head; the front end of the outer cover is provided with a vent hole; the liquid medicine is loaded between the piston head and the vent hole; the disposable prefilled syringe is characterized in that the vent hole is wrapped in a conical structure which is closed outwards; the vent hole is a conical hole which is flared outwards; the front end of the outer cover is also provided with an internal thread connecting end; the internal thread connecting end is sleeved outside the conical structure; an installation cavity is formed between the internal thread of the internal thread connecting end and the outer conical surface of the conical structure; a spiral cap is in threaded connection with the internal thread on the internal thread connecting end through an external thread of the spiral cap, and is stuffed in the installation cavity; and a through hole is arranged in the center of the central wall of the spiral cap.
Description
Technical field
The present invention relates to the technical field of syringe construction, be specially single use pre-encapsulated injector.
Background technology
Pre-encapsulated injector is a kind of drug packaging form of the nineties exploitation, through promoting the use of for many years, for the development of the propagation kept off infection and medical industry, plays a good role.Pre-encapsulated injector be mainly used in high-grade medicine packing and storing and be directly used in injection or for surgery washings such as ophthalmology, otology, orthopaedics.Prefilled syringe avoids: the generation causing malpractice because of wrong medicine, until the life security jeopardizing patient.
Existing prefilled syringe has some shortcomings: there is an aperture prefilled syringe (not being with pin) overcoat front end, aperture front end is blocked by the Capsule of vice, this syringe is after fill medicine, medicine is also full of aperture, under medical personnel want whipping several before use usually, allow liquid medicine mix homogeneously again, because aperture is too tiny, the liquid medicine in aperture is difficult to participate in mixing; Prefilled syringe (band pin) its pin hole is more tiny, and the more difficult participation of the liquid medicine in pin hole mixes again, is easy to buffings in liquid medicine in the Capsule also having needle tubing to be inserted in front end.
Summary of the invention
For the problems referred to above, the invention provides single use pre-encapsulated injector, it guarantees liquid medicine mix homogeneously, and contamination phenomenon can not occur.
Single use pre-encapsulated injector, its technical scheme is such: it comprises core bar, overcoat, described core bar is set in the endoporus of described overcoat, the leading section of described core bar is set with piston head, the leading section of described overcoat is provided with passage, between described piston head and described passage, liquid medicine is housed, it is characterized in that: described passage is wrapped in the conical structure of outwards closing in, described passage is outside enlarging conical bore, the leading section of described overcoat is also provided with female thread link, it is outside that described female thread link is set in described conical structure, formed between the female thread of described female thread link and the outer conical surface of described conical structure and cavity is installed, screw-cap is threaded by its external screw thread the female thread of described female thread link, and plug is loaded in described installation cavity, the center of the center wall of described screw-cap is provided with through hole, the top cylindrical of stopper runs through the center wall of described screw-cap, the top of described top cylindrical is provided with sealing ring, the afterbody of stopper is anchored in the fastening cavity of afterbody of described screw-cap by gland, described top cylindrical plug is loaded in described passage, the sealing ring of described top cylindrical and described passage interference fit.
It is further characterized in that: one end of the close described core bar of described passage is cylindrical hole, be outside enlarging conical bore away from one end of described core bar.
After using structure of the present invention, the afterbody of stopper is anchored in the fastening cavity of afterbody of described screw-cap by gland, thus stopper and screw-cap are connected as a single entity, the top cylindrical plug of stopper is loaded in passage, until the sealing ring of top cylindrical and described passage interference fit while connecting the female thread link of overcoat leading section by its external screw thread by screw-cap, complete sealing, because passage can be enough large, it guarantees liquid medicine mix homogeneously, and contamination phenomenon can not occur.
Accompanying drawing explanation
Fig. 1 is the front view sectional structure schematic diagram of embodiments of the invention one;
Fig. 2 is the structural representation of the passage of embodiments of the invention two.
Detailed description of the invention
See Fig. 1, Fig. 2, it comprises core bar 1, overcoat 2, core bar 1 is set in the endoporus 3 of overcoat 2, the leading section of core bar 1 is set with piston head 4, the leading section of overcoat 2 is provided with passage 5, between piston head 4 and passage 5, liquid medicine is housed, passage 5 is wrapped in the conical structure 6 of outwards closing in, the leading section of overcoat 2 is also provided with female thread link 7, it is outside that female thread link 7 is set in conical structure 6, formed between the female thread 8 of female thread link 7 and the outer conical surface of conical structure 6 and cavity 11 is installed, screw-cap 9 is threaded by its external screw thread 10 female thread 8 of female thread link 7, and plug is loaded in installation cavity 11, the center of the center wall 12 of screw-cap 9 is provided with through hole 13, the top cylindrical 15 of stopper 14 runs through the center wall 12 of screw-cap 9, the top of top cylindrical 15 is provided with sealing ring 16, the afterbody of stopper 14 is anchored in the fastening cavity 18 of afterbody of screw-cap 9 by gland 17, top cylindrical 15 plug is loaded in passage 5, the sealing ring 16 of top cylindrical 15 and passage 5 interference fit.
Specific embodiment one, is shown in Fig. 1: passage 5 is outside enlarging conical bore;
Specific embodiment two, is shown in Fig. 2: one end of the close core bar 1 of passage 5 is cylindrical hole 18, be outside enlarging conical bore 19 away from one end of core bar 1.
Claims (2)
1. single use pre-encapsulated injector, it comprises core bar, overcoat, described core bar is set in the endoporus of described overcoat, the leading section of described core bar is set with piston head, the leading section of described overcoat is provided with passage, between described piston head and described passage, liquid medicine is housed, it is characterized in that: described passage is wrapped in the conical structure of outwards closing in, described passage is outside enlarging conical bore, the leading section of described overcoat is also provided with female thread link, it is outside that described female thread link is set in described conical structure, formed between the female thread of described female thread link and the outer conical surface of described conical structure and cavity is installed, screw-cap is threaded by its external screw thread the female thread of described female thread link, and plug is loaded in described installation cavity, the center of the center wall of described screw-cap is provided with through hole, the top cylindrical of stopper runs through the center wall of described screw-cap, the top of described top cylindrical is provided with sealing ring, the afterbody of stopper is anchored in the fastening cavity of afterbody of described screw-cap by gland, described top cylindrical plug is loaded in described passage, the sealing ring of described top cylindrical and described passage interference fit.
2. single use pre-encapsulated injector according to claim 1, is characterized in that: one end of the close described core bar of described passage is cylindrical hole, be outside enlarging conical bore away from one end of described core bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421699.XA CN102961803B (en) | 2012-10-30 | 2012-10-30 | Disposable prefilled syringe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210421699.XA CN102961803B (en) | 2012-10-30 | 2012-10-30 | Disposable prefilled syringe |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102961803A CN102961803A (en) | 2013-03-13 |
| CN102961803B true CN102961803B (en) | 2015-01-21 |
Family
ID=47792418
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210421699.XA Active CN102961803B (en) | 2012-10-30 | 2012-10-30 | Disposable prefilled syringe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102961803B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102393638B1 (en) * | 2019-12-19 | 2022-05-02 | 김우택 | Disposable syringe for preventing reuse |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111278492B (en) | 2017-10-31 | 2022-06-24 | 泰尔茂株式会社 | Syringe and prefilled syringe |
| WO2020000132A1 (en) * | 2018-06-25 | 2020-01-02 | 江苏采纳医疗科技有限公司 | Pre-filling type catheter flusher cap and pre-filling type catheter flusher using same |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5135513A (en) * | 1987-02-05 | 1992-08-04 | Medicorp Holding S.A. | Connector for liquid transfer device |
| AUPM922394A0 (en) * | 1994-11-03 | 1994-11-24 | Astra Pharmaceuticals Pty Ltd | Plastic syringe with overcap |
| US5531710A (en) * | 1995-02-24 | 1996-07-02 | Courtaulds Aerospace, Inc. | Combination closure and syringe |
| JP3591636B2 (en) * | 2000-04-03 | 2004-11-24 | ニプロ株式会社 | Prefilled syringe |
| US6440101B1 (en) * | 2000-05-31 | 2002-08-27 | Abbott Laboratories | Syringe systems for lyophilized drugs and methods for making the same |
| DE10247965A1 (en) * | 2002-10-15 | 2004-05-06 | Transcoject Gesellschaft für medizinische Geräte mbH & Co KG | Tamper-evident closure for a syringe |
| CN202844253U (en) * | 2012-10-30 | 2013-04-03 | 无锡耐思生物科技有限公司 | Disposable pre-filled injector |
-
2012
- 2012-10-30 CN CN201210421699.XA patent/CN102961803B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102393638B1 (en) * | 2019-12-19 | 2022-05-02 | 김우택 | Disposable syringe for preventing reuse |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102961803A (en) | 2013-03-13 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
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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| CP03 | Change of name, title or address |