CN204744374U - Pelvis fracture marrow internal fixation device of wicresoft - Google Patents

Pelvis fracture marrow internal fixation device of wicresoft Download PDF

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Publication number
CN204744374U
CN204744374U CN201520447135.2U CN201520447135U CN204744374U CN 204744374 U CN204744374 U CN 204744374U CN 201520447135 U CN201520447135 U CN 201520447135U CN 204744374 U CN204744374 U CN 204744374U
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China
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arc
intramedullary pin
pelvis
fracture
screw
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CN201520447135.2U
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Chinese (zh)
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杜晨光
陈伟
侯志勇
张英泽
吕红芝
魏宁
常文利
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Abstract

The utility model provides a pelvis fracture marrow internal fixation device of wicresoft, belongs to orthopedic medical equipment technical field for it is fixed to reseing in the pelvis fracture implementation marrow. Its technical scheme is: tunnel design the pelvis marrow in advance under pelvis CT three -dimensional reconstruction in, according to the crooked radian in tunnel in pelvis marrow preparation seal wire and guide sleeve, the preflex seal wire guide and C type arm perspective drill out the pelvis marrow with soft brill down in the tunnel, put into the arc intramedullary nail in the pelvis marrow in the tunnel along the seal wire, set screw locates opening at pubic tubercle with arc intramedullary nail and pelvis fastening connection after the fracture recovery from illness, takes out the arc intramedullary nail. The utility model discloses a pelvis marrow internal fixation be the innovation to the fixed operation of pelvis fracture, it is fixed that this kind of marrow internal fixation device and method for can realize under the cooperation that direct -view and C type arm shine that the perfection of pelvis ring and acetabular bone fracture restores to the throne, convenient operation, fixed firm has shortened operation time and recovery time greatly, has improved treatment, has lightened patient's misery.

Description

A kind of fracture of pelvis Wicresoft Medullary fixation device
Technical field
This utility model relates to a kind of Medullary fixation device fixing to fracture of pelvis enforcement open reduction, belongs to orthopedic medical device technical field.
Background technology
Pelvis internal fixation treatment is the new technique in the field of orthopedic injury treatment in recent years, also show the new direction of bone surgery medical skill development.Compared with traditional operation, the sclerotin marrow internal therapy of pelvis has support well, to advantages such as damaging surrounding tissue are little, is more and more subject to the welcome of doctor, patient.The Medullary fixation treatment that develops into of contemporary science and technology provides sound assurance, and under the guiding of the electronics of X-ray machine, CT and advanced person, optical device, doctor can carry out operation technique by special instrument, various apparatus.Along with the progress of science and technology, " Wicresoft " this concept has been deep into operating various field.In bone surgery, under the guidance of biology and biomechanical principle, trend towards the auxiliary lower Medullary fixation treatment of iconography, by satisfiedly resetting, reliably fixing, the function of early recovery pelvis and patient.
From dissection, pelvis is made up of the hipbone of both sides and the sacrococcyx at rear.Hipbone belongs to irregular bone, is merged form by the ischium of the ilium on top, the pubis of front lower portion and rear lower.Hipbone top is flat wealthy, and middle part is narrow thick, and closed pore is arranged at bottom, and rear lateral surface upper planar, has gluteus to adhere to.Ilium is made up of ala of ilium and body of ilium; Ischium is made up of ramus of ischium and body of ischium; Pubis by superior ramus of pubis, inferior ramus of pubis and body of pubis three part form, pubic branch is the thinnest, the most easily fractures.Hipbone forms lateral wall and the antetheca of pelvis, and the dark nest of circle at middle part is acetabular bone.According to Bone fracture characteristics, pelvis can be divided into pelvic ring and acetabular bone two parts.Pelvic ring take acetabular bone as boundary, can be divided into front and back two ring.Acetabular bone is divided into front pillar (i.e. ilium shame post), rear pillar (namely ilium sits post) He Jiuding.
Pelvic ring and fracture of acetabulum incidence rate account for 3.37% of the total fracture site of adult, mostly occur person between twenty and fifty.Traditional Therapeutic Method needs incision to appear fracture area, and then adopt reconstruction plate to carry out interior replacement and fixation, this method wound is large, and large to fracture soft tissue injury around, intraoperative hemorrhage is many, and Accessory injury is many, needs secondary to take out, and patient's postoperative recovery time is long.Along with the development of less invasive techniques, in bone surgery treatment, use Minimally Invasive Surgery more and more general, but in pelvic ring and operative treatment of acetabular fractures, use Medullary fixation to perform the operation also beyond example, particularly adopt reconstruction plate to carry out replacement and fixation and be difficult to good results, in pelvic ring and operation of fracture of acetabulum, therefore carry out Medullary fixation operation become a current insoluble difficult problem.Along with the development of orthopaedic medical treatment technology, carrying out Medullary fixation operation is trend of the times, and how solving the difficult problem that Medullary fixation operation and pelvic ring and fracture of acetabulum fix is the problem that operative doctor faces.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of fracture of pelvis Medullary fixation device, the perfect replacement and fixation of pelvic ring and fracture of acetabulum is realized under the cooperation that this Medullary fixation device can irradiate in direct-view and C-arm, to improve therapeutic effect, alleviate the misery of patient.
The technical scheme solved the problems of the technologies described above is:
A kind of pelvic ring and fracture of acetabulum Medullary fixation device, it comprises arc intramedullary pin, seal wire, pilot sleeve, soft brill, arc screw guide plate, guide pin, hold-down screw, intramedullary pin tail cap, arc intramedullary pin is the round and smooth curved circular cylinder in front end, the crooked radian of arc intramedullary pin matches with the radian of the pelvis marrow inner tunnel preset, the external diameter of arc intramedullary pin matches with the internal diameter of the pelvis marrow inner tunnel preset, arc intramedullary pin rear portion and intramedullary pin tail cap are for being threaded, arc intramedullary pin there is multiple fixing threaded hole, fixing threaded hole arranges along the length direction of arc intramedullary pin, seal wire and pilot sleeve are bending arc, arc matches with the radian of the pelvis marrow inner tunnel preset, the external diameter of pilot sleeve matches with the internal diameter of the pelvis marrow inner tunnel preset, soft brill is arranged in pilot sleeve, seal wire is through on the central axial line of soft brill, arc screw guide plate is arc elongated plates, the crooked radian of arc screw guide plate and the crooked radian of arc intramedullary pin match, the rear portion of arc screw guide plate is connected with intramedullary pin tail cap, arc screw guide plate there is multiple locating hole, the position of locating hole is corresponding with the position of the fixing threaded hole on arc intramedullary pin.
Above-mentioned pelvic ring and fracture of acetabulum Medullary fixation device, described arc intramedullary pin is the arc shrouds that front end is closed, the hole that blind end has seal wire to pass through, the internal surface of sleeve pipe at arc intramedullary pin rear portion has screw thread, and intramedullary pin tail cap outer wall has screw thread to be spun on arc intramedullary pin internal surface of sleeve pipe.
Above-mentioned pelvic ring and fracture of acetabulum Medullary fixation device, [tjs1], the through hole that centre has seal wire to pass through, arc intramedullary pin rear portion outer circle wall has screw thread, there is sleeve the front end of intramedullary pin tail cap, and sleeve lining has screw thread to be spun on the excircle at arc intramedullary pin rear portion.
Above-mentioned pelvic ring and fracture of acetabulum Medullary fixation device, described arc screw guide plate is connected with the intramedullary pin tail cap at arc intramedullary pin rear portion by connecting rod, connecting rod upper end and arc screw guide plate are welded to connect, there is the collar lower end of connecting rod, the collar is enclosed within the periphery of intramedullary pin tail cap, the collar has jackscrew and the stressed joint of intramedullary pin tail crown.
Above-mentioned pelvic ring and fracture of acetabulum Medullary fixation device, it also has reconstruction plate, reconstruction plate is arc strip-shaped steel plate, curved plate crooked radian and the outside radian of pelvic ring match, reconstruction plate there is multiple Interal fixation screw, Interal fixation screw arranges along the length direction of reconstruction plate, and Interal fixation screw is corresponding with the position of the fixing threaded hole on arc intramedullary pin.
The beneficial effects of the utility model are:
This utility model designs for the feature of pelvic ring and fracture of acetabulum, intramedullary pin and pelvic ring Morphological plasticity, insert after open surgery or the satisfied reset of Limited exposure Minimally Invasive Surgery, fix in conjunction with conformal reconstruction plate, reach the object that Medullary fixation firmly resets, after fracture recovery from illness, take out hold-down screw through the subcutaneous location of Wicresoft, at pubic tubercle place opening, taken out in pelvis by intramedullary pin by taking out bar, whole operation process can carry out under Wicresoft's condition, alleviates patient suffering.
This utility model is rational in infrastructure, simple to operate, manipulation flexibly, accurate positioning, fixation, because in art, periosteum stripping is few, light to damaging surrounding tissue, carry out operation under direct-view and decrease Accessory injury in art, union of fracture can be promoted better, do not affect C-arm in art throws according to the visual field simultaneously, can be used alone, thus realize minimum x-ray exposed amount, and the conformal reconstruction plate of appropriate length can be selected fixedly to reach the object of the effectively fixing fracture of Medullary fixation device according to fracture site and the order of severity.This utility model is the innovation to fixing operation inside and outside fracture marrow, efficiently avoid the shortcoming of the more single limitation of traditional fracture fixation, solve the difficult problem do not solved for a long time, substantially reduce operating time and recovery time, effectively alleviate the misery of patient, there is good Social benefit and economic benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 uses guide pin location schematic diagram;
Fig. 3 is arc Intramedullary nailing schematic diagram;
Fig. 4 uses reconstruction plate to fix schematic diagram.
In figure, labelling is as follows: pelvis 1, acetabular bone 2, closed pore 3, arc intramedullary pin 4, fixing threaded hole 5, intramedullary pin tail cap 6, hold-down screw 7, arc screw guide plate 8, locating hole 9, guide pin 10, connecting rod 11, the collar 12, jackscrew 13, reconstruction plate 14, Interal fixation screw 15.
Detailed description of the invention
This utility model comprises seal wire, pilot sleeve, soft brill, arc intramedullary pin 4, arc screw guide plate 8, guide pin 10, hold-down screw 7, intramedullary pin tail cap 6, connecting rod 11, reconstruction plate 14.
Seal wire of the present utility model and pilot sleeve are bending arc, arc matches with the radian of the pelvis marrow inner tunnel preset, the external diameter of pilot sleeve matches with the internal diameter of the pelvis marrow inner tunnel preset, and soft brill is arranged in pilot sleeve, and seal wire is through on the central axial line of soft brill.During operation, first by soft be drilled in the guide of seal wire and pilot sleeve under, according to preset pelvis marrow inner tunnel path on pelvis, get out basin marrow inner tunnel, then in tunnel, put into arc intramedullary pin 4, fracture site fixed.
Fig. 1 shows, arc intramedullary pin 4 is the round and smooth curved circular cylinder sleeve pipe in front end, the shape of operation consent designed in advance arc intramedullary pin 4 under pelvis CT three-dimensional reconstruction, with suitable pelvic ring form, and select suitable length, the crooked radian of arc intramedullary pin 4 is matched with the radian of the pelvis marrow inner tunnel preset, and the external diameter of arc intramedullary pin 4 is matched with the internal diameter of the pelvis marrow inner tunnel preset.
Arc intramedullary pin 4 has two kinds of structures, and a kind of arc shrouds being front end and closing, another kind is the solid rivet nut of arc.The internal surface of sleeve pipe at arc intramedullary pin 4 rear portion of front a kind of structure there is screw thread, intramedullary pin tail cap 6 outer wall has screw thread be spun on arc intramedullary pin 4 internal surface of sleeve pipe; The arc intramedullary pin 4 rear portion outer circle wall of rear a kind of structure has screw thread, and there is sleeve the front end of intramedullary pin tail cap 6, and sleeve lining has screw thread to be spun on the excircle at arc intramedullary pin 4 rear portion.
In these two kinds of structures, intramedullary pin tail cap 6 and arc intramedullary pin 4 rear portion are for being threaded, in the first structure, intramedullary pin tail cap 6 also plays the effect of the sleeve pipe of closed arc intramedullary pin 4, intramedullary pin tail cap 6 is connected with arc screw guide plate 8, arc intramedullary pin 4 can be taken out in pelvis after surgery by intramedullary pin tail cap 6.
Fig. 1,3 displays, arc intramedullary pin 4 has multiple fixing threaded hole 5, fixing threaded hole 5 arranges along the length direction of arc intramedullary pin 4, and arc intramedullary pin 4 is fixedly connected with pelvis by fixing threaded hole 5 by hold-down screw 7.
Fig. 1,2 displays, after putting into pelvis marrow inner tunnel at arc intramedullary pin 4, can by hold-down screw 7 accurately and fixing threaded hole 5 para-position of arc intramedullary pin 4, this utility model have also been devised arc screw guide plate 8.Arc screw guide plate 8 is arc elongated plates, the crooked radian of arc screw guide plate 8 and the crooked radian of arc intramedullary pin 4 match, the rear portion of arc screw guide plate 8 is connected with intramedullary pin tail cap 6, arc screw guide plate 6 there is multiple locating hole 9, the position of locating hole 9 is corresponding with the position of the fixing threaded hole 5 on arc intramedullary pin 4, and guide pin 10 accurately can aim at the position of fixing threaded hole 5 by locating hole 9.
Fig. 1 shows, and arc screw guide plate 8 is connected with the intramedullary pin tail cap 6 at arc intramedullary pin 4 rear portion by connecting rod 11.Connecting rod 11 upper end and arc screw guide plate 8 are welded to connect, and there is the collar 12 lower end of connecting rod 11, and the collar 12 is enclosed within the periphery of intramedullary pin tail cap 6, the collar 12 have jackscrew 13 hold out against with intramedullary pin tail cap 6 and are connected.
Fig. 1,4 displays, this utility model also has reconstruction plate 14, when fracture of pelvis is comparatively pulverized, can insert to reach in conjunction with reconstruction plate 14 and is satisfied with replacement and fixation.Reconstruction plate 14 is arc strip-shaped steel plate, curved plate crooked radian and the outside radian of pelvic ring match, reconstruction plate 14 there is multiple Interal fixation screw 15, Interal fixation screw 15 arranges along the length direction of reconstruction plate 14, and Interal fixation screw 15 is corresponding with the position of the fixing threaded hole 5 on arc intramedullary pin 4.For general pelvic ring and fracture of acetabulum, only use arc intramedullary pin, the pelvic ring that complexity is pulverized or fracture of acetabulum, select the length of the reconstruction plate placed to select according to local syntripsis scope, a screw or multiple screw can be comprised; The steel plate auxiliary intra medullary nail of multiple 1-2 screw can be selected as required to fix.Fracture of pelvis Medullary fixation device of the present utility model, can be titanium alloy material, also can be designed to absorbable biomaterial.
Use procedure of the present utility model is as follows:
A. operation consent designed in advance pelvis marrow inner tunnel under pelvis CT three-dimensional reconstruction, seal wire and pilot sleeve is made according to the crooked radian of pelvis marrow inner tunnel, the arc of seal wire and pilot sleeve matches with the radian of the pelvis marrow inner tunnel preset, and the external diameter of pilot sleeve matches with the internal diameter of the pelvis marrow inner tunnel preset.
B. fracture of pelvis is under incision is satisfied with reset case, at pubic tubercle place opening, tunnel portal is got out with soft brill, conformal pilot sleeve is inserted in entrance, soft brill is positioned in pilot sleeve, seal wire is through on the central axial line of soft brill, guides and get out pelvis marrow inner tunnel with soft brill under C-arm perspective at pre-bending seal wire.
C. remove soft brill and sleeve, retain seal wire, arc intramedullary pin 4 is inserted in pelvis marrow inner tunnel along seal wire, exceedes fracture line.Arc screw guide plate 8 is connected with arc intramedullary pin 4, guide pin 10 is aimed at the position of the fixing threaded hole 5 of arc intramedullary pin 4 by the locating hole 9 of arc screw guide plate 8, in the boring of the position of guide pin 10, insert hold-down screw 7, hold-down screw 7 is fastenedly connected with the fixing threaded hole 5 of arc intramedullary pin 4.
D., when fracture of pelvis is comparatively pulverized, can insert to reach in conjunction with reconstruction plate 14 and be satisfied with replacement and fixation.Reconstruction plate 14 is placed on and needs fixing position, guide pin 10 is aimed at the position of the fixing threaded hole 5 of arc intramedullary pin 4 by the locating hole 9 of arc screw guide plate 8, hole in the position of guide pin 10, hold-down screw 7 is screwed in the fixing threaded hole 5 of arc intramedullary pin 4 by boring through the screw on reconstruction plate 14 again, by reconstruction plate 14 and arc intramedullary pin 4 be fastenedly connected.
E. after hold-down screw 5 fixedly completes, the collar 12 of connecting rod 11 lower end is separated with the intramedullary pin tail cap 6 of arc intramedullary pin 4 rear end, retain the sleeve closure of intramedullary pin tail cap 6 pairs of arc intramedullary pins 4, take off arc screw guide plate 8, complete the fixing of arc intramedullary pin 4 and pelvis.
F. hold-down screw 5 is taken out through the subcutaneous location of Wicresoft after fracture recovery from illness, at pubic tubercle place opening, take out the intramedullary pin tail cap 6 of arc intramedullary pin 4, the taking-up screw rod of bar front end and the screw thread of arc intramedullary pin 4 sleeve pipe are screwed, be pulled outwardly arc intramedullary pin 4, taken out in pelvis by arc intramedullary pin 4, whole operation process carries out under Wicresoft's condition, can alleviate patient suffering.

Claims (5)

1. a pelvic ring and fracture of acetabulum Medullary fixation device, it is characterized in that: it comprises arc intramedullary pin (4), seal wire, pilot sleeve, soft brill, arc screw guide plate (8), guide pin (10), hold-down screw (7), intramedullary pin tail cap (6), arc intramedullary pin (4) is the round and smooth curved circular cylinder in front end, the crooked radian of arc intramedullary pin (4) matches with the pelvis marrow inner tunnel radian preset, the external diameter of arc intramedullary pin (4) matches with the internal diameter of the pelvis marrow inner tunnel preset, arc intramedullary pin (4) rear portion and intramedullary pin tail cap (6) are for being threaded, arc intramedullary pin (4) there is multiple fixing threaded hole (5), fixing threaded hole (5) arranges along the length direction of arc intramedullary pin (4), seal wire and pilot sleeve are bending arc, arc matches with the radian of the pelvis marrow inner tunnel preset, the external diameter of pilot sleeve matches with the internal diameter of the pelvis marrow inner tunnel preset, soft brill is arranged in pilot sleeve, seal wire is through on the central axial line of soft brill, arc screw guide plate (8) is arc elongated plates, the crooked radian of arc screw guide plate (8) and the crooked radian of arc intramedullary pin (4) match, the rear portion of arc screw guide plate (8) is connected with intramedullary pin tail cap (6), arc screw guide plate (8) there is multiple locating hole (9), the position of locating hole (9) is corresponding with the position of the fixing threaded hole (5) on arc intramedullary pin (4).
2. pelvic ring according to claim 1 and fracture of acetabulum Medullary fixation device, it is characterized in that: the arc shrouds that described arc intramedullary pin (4) is closed for front end, the hole that blind end has seal wire to pass through, the internal surface of sleeve pipe at arc intramedullary pin (4) rear portion there is screw thread, intramedullary pin tail cap (6) outer wall has screw thread be spun on arc intramedullary pin (4) internal surface of sleeve pipe.
3. pelvic ring according to claim 1 and fracture of acetabulum Medullary fixation device, it is characterized in that: described arc intramedullary pin (4) is arc rivet nut, the through hole that centre has seal wire to pass through, arc intramedullary pin (4) rear portion outer circle wall there is screw thread, there is sleeve the front end of intramedullary pin tail cap (6), and sleeve lining has screw thread to be spun on the excircle at arc intramedullary pin (4) rear portion.
4. the pelvic ring according to Claims 2 or 3 and fracture of acetabulum Medullary fixation device, it is characterized in that: described arc screw guide plate (8) is connected with the intramedullary pin tail cap (6) at arc intramedullary pin (4) rear portion by connecting rod (11), connecting rod (11) upper end and arc screw guide plate (8) are welded to connect, there is the collar (12) lower end of connecting rod (11), the collar (12) is enclosed within the periphery of intramedullary pin tail cap (6), the collar (12) has jackscrew (13) hold out against with intramedullary pin tail cap (6) and is connected.
5. pelvic ring according to claim 4 and fracture of acetabulum Medullary fixation device, it is characterized in that: it also has reconstruction plate (14), reconstruction plate (14) is arc strip-shaped steel plate, curved plate crooked radian and the outside radian of pelvic ring match, reconstruction plate (14) there is multiple Interal fixation screw (15), Interal fixation screw (15) arranges along the length direction of reconstruction plate (14), and Interal fixation screw (15) is corresponding with the position of the fixing threaded hole (5) on arc intramedullary pin (4).
CN201520447135.2U 2015-06-26 2015-06-26 Pelvis fracture marrow internal fixation device of wicresoft Withdrawn - After Issue CN204744374U (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104887301A (en) * 2015-06-26 2015-09-09 陈伟 Pelvic fracture microinvasive intramedullary fixation device
CN105534590A (en) * 2015-12-07 2016-05-04 张英泽 Connecting, clamping and conveying device for extra-epithelial positioning plate and subcutaneous bone connecting plate
WO2017096730A1 (en) * 2015-12-07 2017-06-15 张英泽 Bone plate assembly for minimally invasive surgery in orthopedics
WO2017132646A1 (en) * 2016-01-28 2017-08-03 Nuvasive Specialized Orthopedics, Inc. Systems for bone transport
US10835290B2 (en) 2015-12-10 2020-11-17 Nuvasive Specialized Orthopedics, Inc. External adjustment device for distraction device
US11278462B2 (en) 2016-02-10 2022-03-22 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104887301A (en) * 2015-06-26 2015-09-09 陈伟 Pelvic fracture microinvasive intramedullary fixation device
CN104887301B (en) * 2015-06-26 2017-03-01 陈伟 A kind of minimally invasive Medullary fixation device of fracture of pelvis
CN105534590A (en) * 2015-12-07 2016-05-04 张英泽 Connecting, clamping and conveying device for extra-epithelial positioning plate and subcutaneous bone connecting plate
CN105534590B (en) * 2015-12-07 2016-08-17 张英泽 The connection of one seed coat outside fix plate and notch graft hone lamella and clamping and conveying device
WO2017096730A1 (en) * 2015-12-07 2017-06-15 张英泽 Bone plate assembly for minimally invasive surgery in orthopedics
US10835290B2 (en) 2015-12-10 2020-11-17 Nuvasive Specialized Orthopedics, Inc. External adjustment device for distraction device
WO2017132646A1 (en) * 2016-01-28 2017-08-03 Nuvasive Specialized Orthopedics, Inc. Systems for bone transport
EP3656323A1 (en) * 2016-01-28 2020-05-27 NuVasive Specialized Orthopedics, Inc. Systems for bone transport
US10918425B2 (en) 2016-01-28 2021-02-16 Nuvasive Specialized Orthopedics, Inc. System and methods for bone transport
US11278462B2 (en) 2016-02-10 2022-03-22 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables
US11801187B2 (en) 2016-02-10 2023-10-31 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables

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Granted publication date: 20151111

Effective date of abandoning: 20171114