CN2748099Y - Safety syringe with automatic retractable needle - Google Patents
Safety syringe with automatic retractable needle Download PDFInfo
- Publication number
- CN2748099Y CN2748099Y CN 200520016075 CN200520016075U CN2748099Y CN 2748099 Y CN2748099 Y CN 2748099Y CN 200520016075 CN200520016075 CN 200520016075 CN 200520016075 U CN200520016075 U CN 200520016075U CN 2748099 Y CN2748099 Y CN 2748099Y
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- China
- Prior art keywords
- barrel type
- needle
- syringe
- type push
- push bar
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Abstract
The utility model relates to a safety injector with an automatic retractable needle, comprising a syringe, a barrel type push rod, a needle base, an injection tube, an O-shaped sealing ring, a compression spring plug, a compression spring, a sealant ring, a protective cap and a piston. The injection tube is fixed in the needle base, and the front end of the syringe is provided with a fixing device used to fix the needle base and the compression spring plug. The compression spring which can push the needle base and the injection tube into the interior of the push rod is arranged between the needle base and the compression spring plug. The barrel type push rod is inserted in the syringe. The external side of one end of the barrel type push rod is sheathed with the sealant ring. The internal side of one end of the barrel type push rod is provided with the piston which can enter the interior of the barrel type push rod in the action of thrust reverser. The other end of the barrel type push rod extends out of the syringe, and is provided with a push end which comprises a press hand and an end which is connected with the barrel type push rod. The end is tightly matched with one end of the barrel type push rod, and a circular plate is arranged on the end. A through hole is arranged on the circular plate. The connection point of the press hand and the circular plate is an easy folding structure connection.
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, more particularly, and usefulness when relating to when curing the disease in a kind of medicine and hygiene fields liquid medicine injection and vaccine, and the safety injector that syringe needle can bounce back automatically when injection finishes.
Background technology
Disposable in recent years asepsis injector is widely used when liquid medicine injection and vaccine.For the iatrogenic infectious disease of control, avoid cross infection etc. to play more positive effect.But in use also there is following defective in the disposable sterilized syringe that uses at present:
1, the disposable sterilized syringe (comprising entry needle) that uses at present interior, after use, still remain intact, this takes advantage of the occasion to reclaim for some lawless persons and provides convenience, promptly cleaning a little with depleted disposable syringe after crossing, sold again after the repacking, cause the cross infection of communicate illness, bring the factor of being absolutely unsafe, very difficult realization disposable use truly to the patient.
2, after the medical worker gives the patient infusion medicinal liquid, when transfering to syringe needle, because needle point exposes, if careless, accidental injury oneself finger waits skin sometimes, thereby causes infection, especially for some diseases by blood infection such as acquired immune deficiency syndrome (AIDS), hepatitis, its consequence is even more serious.
3, exhausted syringe is not if return the cover protective cap, and the exposed injection needle that has blood outside is except that bringing the very big danger to the bearer, or the high pollution source of environment.
For this reason, the creator in this utility model relies on it to be engaged in the experience and the practice of relevant industries for many years, for overcoming the defective that prior art exists, and creates the safety injector that a kind of syringe needle can bounce back automatically.
Summary of the invention
The safety injector that provides a kind of syringe needle to bounce back automatically is provided the purpose of this utility model, use this syringe can be after liquid medicine injection finishes, the exposed injection needle that has blood is outside bounced back in the push rod, make injection needle be difficult for stabbing wound medical personnel, and it is destroyed after use, and can't reuse, can effectively solve the existing existing problem of syringe.
The safety injector that syringe needle can bounce back automatically in this utility model includes syringe cylinder, barrel type push bar, needle stand, injection needle, O RunddichtringO, stage clip thromboembolism, compression spring, sealed rubber ring, is used to protect the entry needle protective cap and the piston of injection needle; described injection needle is fixed in the described needle stand, wherein:
The front end of described syringe cylinder is provided with the fixture that is used for fixing needle stand and stage clip thromboembolism, one end of described needle stand and fixture is by O RunddichtringO sealing and fixing, described stage clip thromboembolism is fixedlyed connected with the other end of described fixture, is provided with the compression spring that needle stand and injection needle can be pushed barrel type push bar inside between described needle stand and stage clip thromboembolism;
Described barrel type push bar is plugged in the described syringe cylinder, this barrel type push bar is positioned at the described sealed rubber ring of end outside suit of described syringe cylinder inside, the inboard is fixed with the piston that can enter barrel type push bar inside under the effect of described needle stand propulsive thrust, the other end of described barrel type push bar extends described syringe cylinder, and be equipped with one at this end that extends syringe cylinder and push away end, this pushes away end and includes an end of pressing hands and being connected with barrel type push bar, one end tight fit of described end and barrel type push bar, and be provided with in the end to be used to control and push away the plectane that end enters the barrel type push bar degree of depth and sealing barrel type push bar, be provided with a through hole on this plectane, described is being that easy folded structure is connected by hands with the junction of plectane.
Described syringe includes a needle stand cover, and this needle stand cover sealing and fixing is between described needle stand, stage clip thromboembolism and described fixture.
Described needle stand cover is the cylinder of a hollow, is provided with flange or the groove that is used for described fixture sealing and fixing in the cylinder outer rim, is provided with the flange of O RunddichtringO sealing and fixing and is used for fixing the flange of stage clip thromboembolism at the cylinder inner edge.
Described fixture is the cylindric of hollow, and is integrally formed with described syringe cylinder, is provided with to be used for combining and can prevent groove or the bulge loop that described needle stand cover slides with described needle stand cover outboard flanges or groove sealing on the inwall of this fixture.
The described end that pushes away is formed with a pawl type device that is used for fixing bounce back needle stand, injection needle and piston, and is provided with one between the end and is convenient to push away and holds and the friction tight plectane of barrel type push bar inwall with pushing away at this pawl type device, and this plectane is provided with a through hole.
Described syringe cylinder is provided with the scale that is used to control the barrel type push bar push-in stroke at its end away from fixture.
Described piston is fixed by the groove of dimpling edge and barrel type push bar inwall.
The safety injector that syringe needle can bounce back automatically in this utility model is by means of said structure, after liquid medicine injection finishes, can bounce back in the barrel type push bar exposing the injection needle that has blood outside, make injection needle can not stab wound medical personnel, and injection needle can't take out after bouncing back to barrel type push bar again, that is to say and can't be used for the second time again, thoroughly destroyed, effectively solve the existing existing problem of syringe.
Description of drawings
Fig. 1 is the cross-sectional schematic of the safety injector that syringe needle can bounce back automatically among this utility model embodiment one;
Fig. 2 is the cross-sectional schematic of syringe cylinder in the syringe needle shown in Figure 1 safety injector that can bounce back automatically;
Fig. 3 is the cross-sectional schematic of barrel type push bar shown in Fig. 1;
Fig. 4 is the local enlarged diagram of the safety injector that syringe needle can bounce back automatically in this utility model;
Fig. 5 is the cross-sectional schematic that pushes away end in this utility model;
Fig. 6 is that safety injector needle stand and the piston that syringe needle can bounce back automatically in this utility model bounces back to the interior cross-sectional schematic of barrel type push bar automatically;
Fig. 7 is the sketch map after end fractures of pushing away of syringe needle can bounce back automatically in this utility model safety injector;
Fig. 8 is the cross-sectional schematic of the safety injector that can bounce back automatically of the syringe needle among this utility model embodiment two;
Fig. 9 is that safety injector needle stand and the piston that syringe needle shown in Fig. 8 can bounce back automatically bounces back to the interior cross-sectional schematic of barrel type push bar automatically;
Figure 10 is the cross-sectional schematic of the safety injector that can bounce back automatically of the syringe needle among this utility model embodiment three.
The specific embodiment
The specific embodiment of the utility model is described in further detail below in conjunction with accompanying drawing.
Embodiment one
As shown in Figure 1; the safety injector that syringe needle can bounce back automatically in the present embodiment includes syringe cylinder 5, barrel type push bar 7, sealed rubber ring 6, needle stand 2, injection needle 1, needle stand cover 4, compression spring 8, stage clip thromboembolism 3, piston 9, O RunddichtringO 10, pushes away end 11 and over cap 12.Wherein:
As shown in Figure 1, needle stand cover 4 is provided with inward flange 40,41 at the inboard two ends of its cylinder, and wherein inward flange 41 voltage supply latch plugs 3 compress compression spring 8 usefulness, and inward flange 40 is used to fix O RunddichtringO 11.
As shown in Figure 1, injection needle 1 directly is fixed in the needle stand 2, one end and the injection needle 1 of described needle stand 2 extend stage clip thromboembolism 3 in the lump, the end that the other end extends stage clip thromboembolism 3 is big, be provided with a groove 21 in the outside of this stub end, described needle stand 2 is fixing with needle stand cover 4 by means of this groove 21 and O RunddichtringO 11, and needle stand 2 is provided with the groove (not shown) of being convenient to the medicinal liquid inflow in the end of its big end.
As shown in figures 1 and 3, one end of barrel type push bar 7 directly inserts in the syringe cylinder 5, the other end extends syringe cylinder 5, an end outer rim of wherein inserting syringe cylinder 5 tightly is with sealed rubber ring 6, and sealed rubber ring 6 is contacted with the inner wall sealing of syringe cylinder 5, and barrel type push bar 7 can promote the interior wall slip of sealed rubber ring 6 along syringe cylinder 5, at the inner edge build-in piston 9 is arranged, between piston 9 and barrel type push bar 7, be connected with flanged structure by micro groove 71, as shown in Figure 4, when piston 9 is passed bottom the awl of needle stand 2, piston 9 can be passed in barrel type push bar 7 by propulsive thrust, because barrel type push bar 7 and sealed rubber ring 6, structure between the piston 9 can be finished under without any creative work for those skilled in the art, therefore no longer describes in detail.
As Fig. 1, Fig. 3 and shown in Figure 5, barrel type push bar 7 is equipped with at an end that extends syringe cylinder 5 and pushes away end 11, this pushes away end 11 and includes an end 111 of pressing hands 110 and being connected with barrel type push bar 7, the inwall tight fit of end 111 and barrel type push bar 7, and in the end 111 be provided be used to control push away the end 11 enter barrel type push bar 7 degree of depth and the sealing barrel type push bar 7 plectane 112, being provided with a through hole 114 on this plectane 112, is being that easy folded structure (broken line) 113 is connected by hands 110 with the junction of plectane 111.
Embodiment two
The safety injector that syringe needle can bounce back automatically in the present embodiment, substantially with embodiment one in identical, and identical parts all illustrate with identical label, for this describes in detail no longer separately to modular construction and function that these have same numeral, as Fig. 8 and shown in Figure 9, the difference of safety injector only is to push away end 11 and is formed with a claw type device 117 at its 111 places, end in the present embodiment, and between claw type device 117 and end 111, be provided with a plectane 115, and on plectane 115, be provided with through hole 116, utilize plectane 115 to make to push away end more closely to cooperate with barrel type push bar 7 inwalls.
Embodiment three
The safety injector that syringe needle can bounce back automatically in the present embodiment, basic and embodiment one, identical among the embodiment two, and identical parts all illustrate with identical label, for this describes in detail no longer separately to modular construction and function that these have same numeral, as shown in figure 10, the difference of safety injector only is that syringe cylinder 5 is formed with scale 56 at the end that fixture 55 is not set in the present embodiment, this scale 56 slightly be longer than push away end 11 press hands 110, can in producing storage and transport process, avoid external force that barrel type push bar 7 is passed forward, cause syringe to lose efficacy, in addition, when this syringe is used to draw water for injection and reinjects in the powder pin bottle, can utilize scale 56 to play reminding effect, prevent that barrel type push bar 7 from shifting the end onto and syringe was lost efficacy.
During safety injector that the syringe needle in using present embodiment can bounce back automatically, as Fig. 1, Fig. 6 and shown in Figure 7, at first pull up needle tubing protective cap 12, injection at once behind the aspiration medicinal liquid, when medicinal liquid is about to injection and will finish, the piston 9 of barrel type push bar 7 front ends at first touches needle stand 2 afterbodys, syringe cylinder 5 interior medicinal liquids were not also all injected and were finished this moment, barrel type push bar 7 continues forward impelling, medicinal liquid in the syringe cylinder 5 continues to enter in the human body by the groove and the injection needle 1 of needle stand 2 afterbodys, but when barrel type push bar 7 continued forward impelling, the piston 9 of barrel type push bar 7 front ends was pushed away by the tail end of needle stand 2 is counter, piston 9 was left fix the position to enter in the barrel type push bar 7; Leave at piston 9 and to fix when the position enters in the barrel type push bar 7; the projection of barrel type push bar 7 front ends is exposed and is entered in the gap of the inward flange 40 of needle stand cover 4 and needle stand 2 stub end outer concave edge 21; and push the O RunddichtringO 10 of fixing between needle stand 2 and needle stand cover 4; O RunddichtringO 10 is pushed by the projection of barrel type push bar 7 front ends; make needle stand 2 lose the fixing of O RunddichtringO 10; compress spring 8 loses O RunddichtringO 10 because of needle stand 2 fixing diastole this moment; the diastole power of this compression spring 8 makes needle stand 2 and injection needle 1 leave the human injection position and is retracted into automatically in the barrel type push bar 7; and further by means of the compression spring 8 active force with needle stand 2; piston 9; injection needle 1 snaps in the pawl type device 117 in the lump; as shown in Figure 9; needle stand 2 can not move injection needle 1 after being fixed by claw type device 117; also do not expose outside; so can save the process that the medical matters nursing staff returns trocar tube protective cap 12; avoid fully because of returning the situation generation that trocar tube protective cap 12 is stabbed by injection needle 1; this moment again push away the end 11 places apply a cross force; push away end 11 and fracture, push away the big opening end 52 that the plectane of holding on 11 112 just in time covers syringe cylinder 5 along easy folding part (broken line) 113.
In sum, the safety injector that syringe needle can bounce back automatically in this utility model has following advantage:
1, a needle stand cover is set between needle stand, stage clip thromboembolism and fixture, utilize the technological process of production that can make syringe that is provided with of this needle stand cover to take the automated machine assembling operation, save hand assembled, avoided because of hand assembled to product pollution in process of production, and the simplification technological process of production, greatly enhance productivity.
2, on barrel type push bar, be provided with one and push away end, this pushes away end and has the pawl type device that inserts in the barrel type push bar, utilize this pawl type device injection needle, needle stand and the piston that bounces back automatically can be fixed, can prevent effectively that syringe from being taken place by situation about utilizing once more and needle tubing exposes, and has more safety.
3, injection needle does not expose, and avoids the entry needle spine to hinder skin fully.
4, injection needle, needle stand, piston enter in the barrel type push bar, in barrel type push bar, all ensconce in the syringe cylinder again, makes used syringe volume little, helps focusing on by whole barrel type push bar by stage clip thromboembolism retaining for the compression spring.
Claims (7)
1. safety injector that syringe needle can bounce back automatically; include syringe cylinder, barrel type push bar, needle stand, injection needle, O RunddichtringO, stage clip thromboembolism, compression spring, sealed rubber ring, be used to protect the entry needle protective cap and the piston of injection needle; described injection needle is fixed in the described needle stand, it is characterized in that:
The front end of described syringe cylinder is provided with the fixture that is used for fixing needle stand and stage clip thromboembolism, one end of described needle stand and fixture is by O RunddichtringO sealing and fixing, described stage clip thromboembolism is fixedlyed connected with the other end of described fixture, is provided with the compression spring that needle stand and injection needle can be pushed barrel type push bar inside between described needle stand and stage clip thromboembolism;
Described barrel type push bar is plugged in the described syringe cylinder, this barrel type push bar is positioned at the described sealed rubber ring of end outside suit of described syringe cylinder inside, the inboard is fixed with the piston that can enter barrel type push bar inside under the effect of described needle stand propulsive thrust, the other end of described barrel type push bar extends described syringe cylinder, and be equipped with one at this end that extends syringe cylinder and push away end, this pushes away end and includes an end of pressing hands and being connected with barrel type push bar, one end tight fit of described end and barrel type push bar, and be provided with in the end to be used to control and push away the plectane that end enters the barrel type push bar degree of depth and sealing barrel type push bar, be provided with a through hole on this plectane, described is being that easy folded structure is connected by hands with the junction of plectane.
2. the safety injector that syringe needle as claimed in claim 1 can bounce back automatically is characterized in that: described syringe includes a needle stand cover, and this needle stand cover sealing and fixing is between described needle stand, stage clip thromboembolism and described fixture.
3. the safety injector that can bounce back automatically of the syringe needle described in claim 2, it is characterized in that: described needle stand cover is the cylinder of a hollow, be provided with flange or the groove (43) that is used for described fixture sealing and fixing in the cylinder outer rim, be provided with the flange (41) of O RunddichtringO sealing and fixing and be used for fixing the flange (40) of stage clip thromboembolism at the cylinder inner edge.
4. the safety injector that can bounce back automatically of the syringe needle described in claim 3, it is characterized in that: described fixture is the cylindric of hollow, integrally formed with described syringe cylinder, on the inwall of this fixture, be provided with the groove or the bulge loop that are used for combining and can preventing the slip of described needle stand cover with described needle stand cover outboard flanges or groove (43) sealing.
5. the safety injector that can bounce back automatically of the syringe needle described in claim 1 or 2, it is characterized in that: the described end that pushes away is formed with a pawl type device that is used for fixing bounce back needle stand, injection needle and piston, and at this pawl type device and push away and be provided with one between the end and be convenient to push away end and the friction tight plectane of barrel type push bar inwall, and this plectane is provided with a through hole.
6. the safety injector that can bounce back automatically of the syringe needle described in claim 1 or 2, it is characterized in that: described syringe cylinder is provided with the scale that is used to control the barrel type push bar push-in stroke at its end away from fixture.
7. the safety injector that can bounce back automatically of the syringe needle described in claim 1 or 2, it is characterized in that: described piston is fixed by the groove of dimpling edge and barrel type push bar inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520016075 CN2748099Y (en) | 2004-10-19 | 2005-04-19 | Safety syringe with automatic retractable needle |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200420013972 | 2004-10-19 | ||
| CN200420013972.6 | 2004-10-19 | ||
| CN 200520016075 CN2748099Y (en) | 2004-10-19 | 2005-04-19 | Safety syringe with automatic retractable needle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2748099Y true CN2748099Y (en) | 2005-12-28 |
Family
ID=35719593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520016075 Expired - Lifetime CN2748099Y (en) | 2004-10-19 | 2005-04-19 | Safety syringe with automatic retractable needle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2748099Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097742A1 (en) * | 2008-02-04 | 2009-08-13 | Dongsen Fang | Safe injector |
| WO2009100644A1 (en) * | 2008-02-04 | 2009-08-20 | Dongsen Fang | Automatic retracting safe injector |
| WO2010088845A1 (en) * | 2009-02-08 | 2010-08-12 | 浙江康康医疗器械有限公司 | Disposable safety syringe with automatically retractable needle head |
| CN101601882B (en) * | 2009-07-15 | 2012-02-01 | 无锡市宇寿医疗器械股份有限公司 | Disposable safety syringe with replaceable and automatically retracted needle |
| CN101850141B (en) * | 2009-04-01 | 2013-06-12 | 江苏亿乐医疗用品有限公司 | Safe injector |
| CN109646144A (en) * | 2018-12-17 | 2019-04-19 | 唐山爱在云端网络科技有限公司 | Push type syringe |
| CN111065428A (en) * | 2017-05-30 | 2020-04-24 | 西医药服务以色列有限公司 | Needle shield for needle retraction |
| US11819666B2 (en) | 2017-05-30 | 2023-11-21 | West Pharma. Services IL, Ltd. | Modular drive train for wearable injector |
-
2005
- 2005-04-19 CN CN 200520016075 patent/CN2748099Y/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009097742A1 (en) * | 2008-02-04 | 2009-08-13 | Dongsen Fang | Safe injector |
| WO2009100644A1 (en) * | 2008-02-04 | 2009-08-20 | Dongsen Fang | Automatic retracting safe injector |
| WO2010088845A1 (en) * | 2009-02-08 | 2010-08-12 | 浙江康康医疗器械有限公司 | Disposable safety syringe with automatically retractable needle head |
| CN101850141B (en) * | 2009-04-01 | 2013-06-12 | 江苏亿乐医疗用品有限公司 | Safe injector |
| CN101601882B (en) * | 2009-07-15 | 2012-02-01 | 无锡市宇寿医疗器械股份有限公司 | Disposable safety syringe with replaceable and automatically retracted needle |
| CN111065428A (en) * | 2017-05-30 | 2020-04-24 | 西医药服务以色列有限公司 | Needle shield for needle retraction |
| US11389598B2 (en) | 2017-05-30 | 2022-07-19 | West Pharma. Services IL, Ltd. | Needle shield for injection needle retraction |
| CN111065428B (en) * | 2017-05-30 | 2022-10-11 | 西医药服务以色列有限公司 | Needle shield for needle retraction |
| US11819666B2 (en) | 2017-05-30 | 2023-11-21 | West Pharma. Services IL, Ltd. | Modular drive train for wearable injector |
| CN109646144A (en) * | 2018-12-17 | 2019-04-19 | 唐山爱在云端网络科技有限公司 | Push type syringe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHENJIANG CITY JINFENG MEDICAL TECHNOLOGY CO., LT Free format text: FORMER OWNER: GONGCHUANG MEDICAL INSTRUMENT SCIENCE-TECHNOLOGY CO., LTD., DANYANG CITY Effective date: 20080411 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080411 Address after: Jiangsu province Zhenjiang City Jingkou Technology Industrial Park, zip code: 212006 Patentee after: Zhenjiang Jinfeng Medical Technology Co., Ltd. Address before: Room 1, unit 15-1, building 301, Yunyang village, Jiangsu, Danyang, 212300 Patentee before: Gongchuang Medical Instrument Science-Technology Co., Ltd., Danyang City |
|
| DD01 | Delivery of document by public notice |
Addressee: Jiang Wenjun Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Jiang Wenjun Document name: Notification of Termination of Patent Right |
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| DD01 | Delivery of document by public notice |
Addressee: Jiang Wenjun Document name: Notification of Decision on Request for Restoration of Right |
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| ASS | Succession or assignment of patent right |
Owner name: BEIJING JINGJING MEDICAL EQUIPMENT CO., LTD. Free format text: FORMER OWNER: ZHEJIANG JINFENG MEDICAL TECHNOLOGY CO., LTD. Effective date: 20130814 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 212006 ZHENJIANG, JIANGSU PROVINCE TO: 100176 DAXING, BEIJING |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130814 Address after: 100176 No. 11 Wanyuan street, Beijing economic and Technological Development Zone, Beijing Patentee after: Jingjing Medical Equipment Co., Ltd., Beijing Address before: 212006 Zhenjiang City, Jiangsu province Jingkou Technology Industrial Park Patentee before: Zhenjiang Jinfeng Medical Technology Co., Ltd. |
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| DD01 | Delivery of document by public notice |
Addressee: Jiang Wenjun Document name: Notification of Passing Examination on Formalities |
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| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20150419 Granted publication date: 20051228 |