CN104287819A - Medical pedicle screw component with telescopic double thread and capable of resisting pullout - Google Patents
Medical pedicle screw component with telescopic double thread and capable of resisting pullout Download PDFInfo
- Publication number
- CN104287819A CN104287819A CN201410527270.8A CN201410527270A CN104287819A CN 104287819 A CN104287819 A CN 104287819A CN 201410527270 A CN201410527270 A CN 201410527270A CN 104287819 A CN104287819 A CN 104287819A
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- China
- Prior art keywords
- screw thread
- supporter
- screw
- plucking
- resistance
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/84—Fasteners therefor or fasteners being internal fixation devices
- A61B17/86—Pins or screws or threaded wires; nuts therefor
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- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Surgery (AREA)
- Neurology (AREA)
- Heart & Thoracic Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Surgical Instruments (AREA)
Abstract
The invention relates to a medical pedicle screw component with a telescopic double thread and capable of resisting pullout. The medical pedicle screw component with the telescopic double thread and capable of resisting the pullout is characterized in that a thread control shaft is arranged in a hollow cavity of a nail body, the thread control shaft is matched with connection rods, the connection rods are connected with telescopic screws, and the telescopic screws are arranged in a plurality of holes formed in the outer wall at the front end of the nail body. Furthermore, the cross section of the thread control shaft is of a butterfly structure, the thread control shaft comprises a middle shaft and a first support body and a second support body which are symmetrically arranged along the center line of the middle shaft, two slide pieces matched with the connection rods are fixed on the outer side of each of the first support body and the second support body, the cross section of each slide piece is in a crescent shape, the two slide pieces on each of the first support body and the second support body are oppositely arranged, and therefore rising and falling of the telescopic screws are adjusted by rotating the thread control shaft, unscrewing of threads is achieved by rotating the thread control shaft, stability of internal fixation of a spine is improved when bone rarefaction is cured or secondary screw placement is performed for revision, and occurrence rate of loosening or even detachment is reduced.
Description
Technical field
The invention belongs to field of medical auxiliary equipment, be specifically related to the two screw thread of a kind of Medical flexible, pedicle screw assemblies that resistance to plucking goes out.
Background technology
Spinal fusion is one of primary treatments for the treatment of spinal column many types disease, U.S.'s spinal fusion surgery number of cases cumulative year after year, 1998 to 2008, in every 100,000 populations, cervical vertebra, thoracic vertebra, Lumbar Fusion number of cases increase 90% respectively, 61% and 141% (Rajaee SS, Bae HW, Kanim LE, Delamarter RB.Spinal fusion in the United States:analysis of trends from 1998to 2008.Spine (Phila Pa 1976) 2012; 37 (1): 67-76).Spinal fusion many employings posterior Pedicle screw+hold-down bars-nail-stick system realizes, but along with aged tendency of population and the raising of osteoporosis sickness rate that brings thus, and cause spinal fusion unsuccessfully to need (the Rajaee SS that increases of revision procedure because pedicle screw loosens, Kanim LEA, Bae HW.National trends in revision spinal fusion in the USA:Patient characteristics and complications.Bone Joint J 2014; , traditional pedicle screw technique for fixing is subject to great challenge 96B (6): 807-16).For the vertebral body of osteoporosis with secondary Pin nail when overhauling, traditional pedicle screw is fixedly easy to loosening, and is difficult to realize firm fixing; Recent domestic scholar has carried out all explorations and improvement, comprise nail sheath, expansion screw screw assembly, injectable screw assembly etc., although osteoporosis also can be realized and overhaul the fixing of vertebral body pedicle nail, expand or after injection screw assembly change into irreversibility.Once pedicle screw goes wrong, need take out internal fixtion, these improvement cannot realize smooth taking-up.
Biomechanics Research shows, the hold of pedicle screw and bone interface, is directly proportional with the area contacted and the degree of depth.Dark screw thread can increase the contact area with sclerotin, improves hold and the resisting pull out forces of screw.The depth of thread of pedicle screw conventional is at present 1mm.
Summary of the invention
The object of the invention is to overcome the shortcoming existed in above-mentioned prior art, the two screw thread of a kind of Medical flexible be provided, pedicle screw assemblies that resistance to plucking goes out, there is fixation, the hold of screw and the advantage of resisting pull out forces can be improved.
For achieving the above object, the present invention by the following technical solutions: the rivet nut comprising hollow, the afterbody of rivet nut is fixed with nail tail; Be provided with the screw thread that can rotate in the hollow cavity of rivet nut and control axle, and one end that screw thread control axle offers swivelling chute is run through outside nail tail;
The outer wall of described rivet nut is fixed with some retaining threads, rivet nut front end outer wall offers some holes, be provided with some scalable screws in hole, the bottom of scalable screw is fixed with connecting rod, and one end of connecting rod is arranged at screw thread and controls in axle;
The cross section that described screw thread controls axle be butterfly structure, comprises axis and symmetrically arranged first supporter of axis of spindle and the second supporter in edge on it; The inner side of the first supporter and the second supporter is all fixed on axis, and the outside of the first supporter and the second supporter is all fixed with two slide plates matched with connecting rod;
The cross section of described slide plate is crescent, and two slide plates are oppositely arranged.
Described nail tail is bowl-shape, and its inwall is provided with female thread.
Two hypotenuse length of the first described supporter and the second supporter are equal, and the angle at base angle is 45 °.
The material that described screw thread controls axle, connecting rod and nail tail is medical titanium alloy.
The diameter of described screw thread control axle is less than the diameter of hollow cavity.
The height of described retaining thread is 0.8 ~ 1.2mm.
Described scalable screw length is 1.5 ~ 2.5mm.
The external diameter of described hollow rivet nut is 6 ~ 7mm.
The internal diameter of described hollow cavity is 2.5 ~ 3.5mm.
The bottom of described connecting rod, is fixed with the second slide plate matched with the first slide plate.
The present invention has following beneficial effect: prior art of comparing, the present invention controls axle by arranging screw thread in the hollow cavity of rivet nut, and screw thread control axle matches with connecting rod, connecting rod connects scalable screw, scalable screw is arranged on the outer wall of rivet nut front end and offers in some holes, and be butterfly structure because screw thread controls the cross section of axle, comprise axis and symmetrically arranged first supporter of axis of spindle and the second supporter in edge on it; The outside of the first supporter and the second supporter is all fixed with two slide plates matched with connecting rod; The cross section of slide plate is crescent, and two slide plates are oppositely arranged; Thus axle can be controlled by rotating screw thread, regulate the rise and fall of scalable screw, greatly facilitate use.Control by rotating screw thread the back-out that axle realizes screw thread, when improving osteoporosis or overhaul secondary Pin nail, internal fixation of spine stability, reduces the incidence rate loosening even to deviate from.When special circumstances need take out internal fixtion, by rotating screw thread control axle, scalable screw being regained, realizing the perfect adaptation that resistance to plucking goes out and can take out.Reduce the risk that pedicle screw loosens, extracts, meanwhile, scalable screw designs, also ensure that in particular cases pedicle screw can take out, and effectively improves clinical efficacy.
Further, because nail tail is bowl-shape, inwall is provided with female thread, thus reduces user to the operation easier of rivet nut, doctor is used convenient.
Accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present invention.
Fig. 2 be the present invention when being in retraction initial condition screw thread control axle construction schematic diagram.
Fig. 3 is that the present invention is in screw thread control axle construction schematic diagram when stretching out state.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1-3, the present invention includes the rivet nut 1 of hollow, the afterbody of rivet nut 1 is fixed with nail tail 5; Be provided with the screw thread that can rotate in the hollow cavity 6 of rivet nut 1 and control axle 3, and one end that screw thread control axle 3 offers swivelling chute is run through outside nail tail 5; The outer wall of rivet nut 1 is fixed with some retaining threads 7, rivet nut 1 front end outer wall offers some holes, is provided with some scalable screws 8 in hole, the bottom of scalable screw 8 is fixed with connecting rod 4, and one end of connecting rod 4 is arranged at screw thread and controls in axle 3; It is butterfly structure that screw thread controls the cross section of axle 3, comprise axis 2 with its on along symmetrically arranged first supporter 9 and the second supporter 10 of axis 2 center line; The inner side of the first supporter 9 and the second supporter 10 is all fixed on axis 2, and the outside of the first supporter 9 and the second supporter 10 is all fixed with two slide plates 12 matched with connecting rod 4; The cross section of slide plate 12 is crescent, and two slide plates 12 are oppositely arranged.The cross section of nail tail 5 is U-shaped, and its inwall is provided with female thread 11.Two hypotenuse length of the first supporter 9 and the second supporter 10 are equal, and the angle at base angle is 45 °, and the material that screw thread controls axle 3, connecting rod 4 and nail tail 5 is medical titanium alloy.The diameter of screw thread control axle 3 is less than the diameter of hollow cavity 6.The height of retaining thread 7 is 0.8 ~ 1.2mm.Scalable screw 8 length is 1.5 ~ 2.5mm.The external diameter of hollow rivet nut 1 is 6 ~ 7mm.The internal diameter of hollow cavity 6 is 2.5 ~ 3.5mm.The bottom of described connecting rod 4, is fixed with the second slide plate 13 matched with the first slide plate 12.
Using method: when spinal surgery, after pedicle of vertebral arch place accurately sets up pedicle screw duct, this pedicle screw assemblies can be used, guarantee that two thread depth is consistent, and when scalable screw 8 is in home position, after conventional implantation pedicle nail, employing turns core propeller, control the axis 2 in axle 3 by the screw thread of rotary tack tail opening, stretching out of scalable screw 8 in pedicle screw can be realized, realize the bone hold improving screw.If need pedicle screw be taken out, then by rotating the axis 2 in screw thread control axle 3, realizing the retraction of scalable screw 8 in screw, realizing taking out smoothly.
In use:
Stretch out state: by rotating the axis 2 in screw thread control axle 3, and owing to being fixed on axis 2 in the inner side of the first supporter 9 and the second supporter 10, axis 2 drives the first supporter 9 and the second supporter 10 together to rotate when rotating, two sidewall extrusion of the first supporter 9 and the second supporter 10 are connected with the connecting rod 4 of scalable screw 8, make scalable screw 8 increase, stretch out screw thread and control outside axle 3; The one end being fixed with the second slide plate 13 of rotating 90 ° of rear connecting rods 4 is fastened in the first slide plate 12 of two composition butterfly structures, and butterfly structure positions scalable screw 8, avoids it to slide, and makes it fixing firm; Dark screw thread can increase the contact area with sclerotin, improves hold and the resisting pull out forces of screw.
Indentation state: rotation central axis 2, the anglec of rotation is 90 °, because bone has pressure to scalable screw 8, scalable screw 8 is after the support losing the first supporter 9 and the second supporter 10, the pressure of the scalable screw 8 of bone makes its retraction screw thread control in axle 3, thus greatly reduce hold, and at this moment, can easily from detaching device in bone.
Claims (10)
1. the pedicle screw assemblies that goes out of the two screw thread of Medical flexible, resistance to plucking, it is characterized in that: the rivet nut (1) comprising hollow, the afterbody of rivet nut (1) is fixed with nail tail (5); Be provided with the screw thread that can rotate in the hollow cavity (6) of rivet nut (1) and control axle (3), and nail tail (5) is run through outward in one end that screw thread control axle (3) offers swivelling chute;
The outer wall of described rivet nut (1) is fixed with some retaining threads (7), rivet nut (1) front end outer wall offers some holes, some scalable screws (8) are provided with in hole, the bottom of scalable screw (8) is fixed with connecting rod (4), and one end of connecting rod (4) is arranged at screw thread and controls in axle (3);
The cross section that described screw thread controls axle (3) is butterfly structure, comprise axis (2) and its on along symmetrically arranged first supporter (9) of axis (2) center line and the second supporter (10); The inner side of the first supporter (9) and the second supporter (10) is all fixed on axis (2), and the outside of the first supporter (9) and the second supporter (10) is all fixed with two the first slide plates (12) matched with connecting rod (4);
The cross section of described slide plate (12) is crescent, and two the first slide plates (12) are oppositely arranged.
2. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: described nail tail (5) in bowl-shape, and its inwall is provided with female thread (11).
3. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, it is characterized in that: described the first supporter (9) is equal with two hypotenuse length of the second supporter (10), and the angle at base angle is 45 °.
4. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: the material that described screw thread controls axle (3), connecting rod (4) and follows closely tail (5) is medical titanium alloy.
5. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: the diameter that described screw thread controls axle (3) is less than the diameter of hollow cavity (6).
6. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: the height of described retaining thread (7) is 0.8 ~ 1.2mm.
7. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: described scalable screw (8) length is 1.5 ~ 2.5mm.
8. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: the external diameter of described hollow rivet nut (1) is 6 ~ 7mm.
9. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, is characterized in that: the internal diameter of described hollow cavity (6) is 2.5 ~ 3.5mm.
10. the pedicle screw assemblies that goes out of the two screw thread of a kind of Medical flexible according to claim 1, resistance to plucking, it is characterized in that: the bottom of described connecting rod (4), be fixed with the second slide plate (13) matched with the first slide plate (12).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527270.8A CN104287819B (en) | 2014-10-09 | 2014-10-09 | The pedicle screw assemblies that a kind of Medical flexible double thread, resistance to plucking go out |
| PCT/CN2015/087622 WO2016054951A1 (en) | 2014-10-09 | 2015-08-20 | Telescopic double-threaded pull-out resistant pedicle screw assembly for medical use |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527270.8A CN104287819B (en) | 2014-10-09 | 2014-10-09 | The pedicle screw assemblies that a kind of Medical flexible double thread, resistance to plucking go out |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104287819A true CN104287819A (en) | 2015-01-21 |
| CN104287819B CN104287819B (en) | 2016-06-29 |
Family
ID=52307954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410527270.8A Expired - Fee Related CN104287819B (en) | 2014-10-09 | 2014-10-09 | The pedicle screw assemblies that a kind of Medical flexible double thread, resistance to plucking go out |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104287819B (en) |
| WO (1) | WO2016054951A1 (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016054951A1 (en) * | 2014-10-09 | 2016-04-14 | 中国人民解放军第四军医大学 | Telescopic double-threaded pull-out resistant pedicle screw assembly for medical use |
| CN106691570A (en) * | 2017-01-22 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Bolt |
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
| CN108478268A (en) * | 2018-05-29 | 2018-09-04 | 迪恩医疗科技有限公司 | Band hook-type orthopaedic screw |
| CN109700515A (en) * | 2019-01-24 | 2019-05-03 | 陈志伟 | A kind of anti-rotation hollow screw |
| CN113476128A (en) * | 2021-08-23 | 2021-10-08 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
| CN116869702A (en) * | 2023-09-06 | 2023-10-13 | 杭州锐健马斯汀医疗器材有限公司 | Anchor nail |
| CN117257429A (en) * | 2023-11-21 | 2023-12-22 | 苏州爱得科技发展股份有限公司 | pedicle screw |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018039485A1 (en) | 2016-08-24 | 2018-03-01 | Integrity Implants, Inc. | Adjustable bone fixation systems |
| CN107007336B (en) * | 2017-05-22 | 2024-02-06 | 湖北职业技术学院 | Abdomen midwifery device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048352A1 (en) * | 1996-06-18 | 1997-12-24 | Mehran Kasra | Bone prosthesis fixation device and methods of using same |
| WO2000025690A1 (en) * | 1998-10-30 | 2000-05-11 | Ian Ross Griggs | Fixation device |
| WO2008146981A1 (en) * | 2007-05-31 | 2008-12-04 | Gs Medical Co., Ltd. | A spinal screw module |
| CN102322467A (en) * | 2011-09-07 | 2012-01-18 | 梁幸平 | A kind of locking nail |
| CN102940523A (en) * | 2012-11-26 | 2013-02-27 | 中国人民解放军成都军区总医院 | Assembly for reinforcing injectable vertebral pedicle screw |
| CN202960735U (en) * | 2012-11-23 | 2013-06-05 | 尹国瑞 | Self-locking bone nail |
| CN204169918U (en) * | 2014-10-09 | 2015-02-25 | 中国人民解放军第四军医大学 | The pedicle screw assemblies that the two screw thread of a kind of Medical flexible, resistance to plucking go out |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3318751A1 (en) * | 1983-05-24 | 1984-12-06 | Peter Dipl.-Ing. 8374 Viechtach Bertsche | POWER-TRANSFERING WOOD JOINT |
| DE102004009429A1 (en) * | 2004-02-24 | 2005-09-22 | Biedermann Motech Gmbh | Bone anchoring element |
| CN203763222U (en) * | 2014-03-07 | 2014-08-13 | 中国人民解放军第四军医大学 | Medical anchor type vertebral pedicle screw |
| CN104287819B (en) * | 2014-10-09 | 2016-06-29 | 中国人民解放军第四军医大学 | The pedicle screw assemblies that a kind of Medical flexible double thread, resistance to plucking go out |
-
2014
- 2014-10-09 CN CN201410527270.8A patent/CN104287819B/en not_active Expired - Fee Related
-
2015
- 2015-08-20 WO PCT/CN2015/087622 patent/WO2016054951A1/en active Application Filing
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048352A1 (en) * | 1996-06-18 | 1997-12-24 | Mehran Kasra | Bone prosthesis fixation device and methods of using same |
| WO2000025690A1 (en) * | 1998-10-30 | 2000-05-11 | Ian Ross Griggs | Fixation device |
| WO2008146981A1 (en) * | 2007-05-31 | 2008-12-04 | Gs Medical Co., Ltd. | A spinal screw module |
| CN102322467A (en) * | 2011-09-07 | 2012-01-18 | 梁幸平 | A kind of locking nail |
| CN202960735U (en) * | 2012-11-23 | 2013-06-05 | 尹国瑞 | Self-locking bone nail |
| CN102940523A (en) * | 2012-11-26 | 2013-02-27 | 中国人民解放军成都军区总医院 | Assembly for reinforcing injectable vertebral pedicle screw |
| CN204169918U (en) * | 2014-10-09 | 2015-02-25 | 中国人民解放军第四军医大学 | The pedicle screw assemblies that the two screw thread of a kind of Medical flexible, resistance to plucking go out |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016054951A1 (en) * | 2014-10-09 | 2016-04-14 | 中国人民解放军第四军医大学 | Telescopic double-threaded pull-out resistant pedicle screw assembly for medical use |
| CN106691570A (en) * | 2017-01-22 | 2017-05-24 | 北京爱康宜诚医疗器材有限公司 | Bolt |
| CN106691570B (en) * | 2017-01-22 | 2020-11-06 | 北京爱康宜诚医疗器材有限公司 | Screw nail |
| CN107260272A (en) * | 2017-06-26 | 2017-10-20 | 苏州奥特科然医疗科技有限公司 | A kind of medical bone withdrawing device |
| CN108478268A (en) * | 2018-05-29 | 2018-09-04 | 迪恩医疗科技有限公司 | Band hook-type orthopaedic screw |
| CN108478268B (en) * | 2018-05-29 | 2023-09-12 | 迪恩医疗科技有限公司 | Orthopedic screw with hook |
| CN109700515A (en) * | 2019-01-24 | 2019-05-03 | 陈志伟 | A kind of anti-rotation hollow screw |
| CN113476128A (en) * | 2021-08-23 | 2021-10-08 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
| CN113476128B (en) * | 2021-08-23 | 2022-09-23 | 北京市春立正达医疗器械股份有限公司 | Anti-extraction bone screw |
| CN116869702A (en) * | 2023-09-06 | 2023-10-13 | 杭州锐健马斯汀医疗器材有限公司 | Anchor nail |
| CN117257429A (en) * | 2023-11-21 | 2023-12-22 | 苏州爱得科技发展股份有限公司 | pedicle screw |
| CN117257429B (en) * | 2023-11-21 | 2024-01-30 | 苏州爱得科技发展股份有限公司 | Pedicle screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104287819B (en) | 2016-06-29 |
| WO2016054951A1 (en) | 2016-04-14 |
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Granted publication date: 20160629 Termination date: 20171009 |