WO2011043681A1 - Unloading-dynamic intervertebral device - Google Patents
Unloading-dynamic intervertebral device Download PDFInfo
- Publication number
- WO2011043681A1 WO2011043681A1 PCT/PL2010/000101 PL2010000101W WO2011043681A1 WO 2011043681 A1 WO2011043681 A1 WO 2011043681A1 PL 2010000101 W PL2010000101 W PL 2010000101W WO 2011043681 A1 WO2011043681 A1 WO 2011043681A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- bars
- guideline
- guide
- closed position
- situated
- Prior art date
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 21
- 238000000034 method Methods 0.000 description 24
- 239000007943 implant Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 7
- 210000000988 bone and bone Anatomy 0.000 description 6
- 230000006641 stabilisation Effects 0.000 description 6
- 238000011105 stabilization Methods 0.000 description 6
- 238000002513 implantation Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000001537 neural effect Effects 0.000 description 4
- 239000003381 stabilizer Substances 0.000 description 4
- 230000002146 bilateral effect Effects 0.000 description 3
- 230000004064 dysfunction Effects 0.000 description 3
- 210000003041 ligament Anatomy 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 238000001356 surgical procedure Methods 0.000 description 2
- 210000003484 anatomy Anatomy 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000002224 dissection Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000001575 pathological effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 210000004872 soft tissue Anatomy 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
Classifications
-
- 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
- A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
- A61B17/7065—Devices with changeable shape, e.g. collapsible or having retractable arms to aid implantation; Tools therefor
-
- 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
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
Definitions
- the scope of the invention is an unloading-dynamic intervertebral device, used in spinal surgery.
- the device is used for an even, steady and adjustable decompression of the intervertebral interspinous space and for maintaining the distance between at least two vertebrae, and also for the treatment of pathologic lateral deformations of the spine by supporting the device on bony elements of the posterior spinal column, especially on spinous processes and neural arches.
- Stabilizers used for interspinous spinal stabilization using a surgical posterior approach are usually known in the form of one or several cooperating carrying elements situated in the interspinous space, ended with profiled sockets for spinous processes. Such stabilizers situated in the axis of the spine serve mainly for one-level stabilization of the adjoining vertebrae.
- Solutions are also known in the form of lamellar or rod bearing elements with an adjustable length, installed in the interspinous space and comprising hook elements resting against on spinous processes.
- Such stabilizers can be used for supporting the spine on one and several levels.
- An interspinous implant situated non-axially in relation to the spine is known from the patent application W02007/127550, comprising superior and inferior bearing elements cooperating in a sliding way along the axis corresponding to the axis of the spine. Laterally separated bearing elements are ended with brackets for fastening onto superior and inferior spinal interspinous processes, respectively. In a folded position, the device is of the height allowing its installation between spinal processes and the interspinous space is increased by distraction of both elements.
- An axial interspinous implant in the form of a frame embracing exteriorly vertebral processes is disclosed in the patent application WO 2007/127694.
- the frame is in the form of a ring or its parts provided with holes situated on both sides of the axis, through which elastic bands are drawn out.
- the bands constitute bearing elements pulling off superior and inferior processes respectively to the superior and inferior part of the frame.
- the place of connection of the implant with the bone can be secured by sharp projections constituting an integral part of internal surfaces of the frame.
- an interspinous implant which contains a bearing supporting part with profiled sockets located axially between adjoining spinous processes and two hook elements connected by an elastic band which passes through the support.
- the hooks fasten the processes from the superior side preventing excessive flexion of the spinal motion segment.
- the patent application WO 01/91658 discloses a device and the method of its application for distraction of adjacent spinous processes. The device has got a bracket with a guide fastened by a connector to a laterally separated rod element ended with hooks, which embrace spinous processes. The construction of the device allows rotational movement between the bracket and the hook.
- a multi-segment stabilizer for controlling the intervertebral space is known from the patent application US 4611582 .
- the body comprises a longitudinal, laterally separated bearing body and two laminar clamps.
- the clamps are in the form of two alternating hooks, both of them are adapted for a rigid, bilateral embrace of a part of one vertebra.
- the body is dual, it consists of movable cooperating parts connected with each other by threaded elements fastening and adjusting body's length.
- the patent application US 5439463 refers to a spinal device which consists of two clamp elements ended with hook parts: a fixed one with a rod setting the distance, and an adjustable one.
- the surface of the rod and the corresponding surface of the adjustable clamp cooperate in a sliding way through toothed surfaces and their cooperation is secured by a distance fastening element provided with a clamping ring and threaded screw.
- a device for implantation and distraction of spinal spinous processes is known from the patent application WO 2008/085445. It consists of a longitudinal body and two sliding elements. Each of them is composed of the main part cooperating with the body and hook arms for support on the bone. In an embodiment of the device, the arms are provided with a rough surface increasing friction in the area of contact of the implant and a spinous process.
- the unloading-dynamic intervertebral device is free of the above drawbacks. It consists of two bars cooperating with each other, where each of them is ended from one side with a shaped bearing for bony elements of the spine. According to the invention, one of the bars is provided with a guideline, whereas the other with a guide. Moreover, the first bar is provided with at least one tang, situated in the corresponding shaped gap of the other bar, assuring rotatable and rotatable-sliding cooperation of the bars crossing in the open position of the device. The device is equipped with a mechanism blocking rotational movement of the bars in the closed position.
- the guideline is provided with at least one tang situated in the guide's gap or at least one shaped gap made in the guideline cooperates with the ends of the tang fixed in the guide.
- the tang connected with the guide is situated in the guideline.
- a notch located in the end of the guide and a projection made in the guideline which cooperates with the guide constitute the mechanism blocking rotational movement of the bars and their mutual location in the closed position of the device.
- the mechanism blocking rotational movement of the bars in the closed position of the device is formed by a projection made in the end of the guide cooperating with the notch made in the guideline.
- the guide or the guideline are provided with at least one shaped gap ended with a socket. The tang constituting an element of the mechanism blocking rotational movement of the bars in the closed position of the device is situated in the socket.
- shaped gaps in the guideline or the guide of the device are through. It is also preferable to connect the shaped gap with the input canal, thus enabling introduction of the tang.
- the mechanism blocking rotational movement of the bars in the closed position of the device preferably comprises a plate situated in the shaped gaps of the two-arm guideline.
- a pin setting the mutual position of the guide and the guideline constitute the mechanism blocking movement of the bars in the closed position.
- At least one shaped bearing constitutes a separate element moveably connected to the corresponding bar.
- At least one bearing is provided with at least one incision , thus imparting resilience to the construction.
- the device is provided with a scale showing the value of distraction, which will be obtained in the closed position of the device.
- the bars of the device are provided with at least one means for guiding the band.
- the unloading-dynamic intervertebral device according to the invention is used to support dysfunctions of any spinal segment, including also deformities.
- the device can be used at one or many levels with unilateral or bilateral support on spinous processes and/or simultaneously on bony elements adjoining the spinous processes, such as neural arches.
- the device according to the invention offers the possibility of steady and even intervertebral distraction already during the process of installation between bony elements, which is not possible in other solutions, it decreases the risk of an incorrect selection of implant's dimensions, excludes the use of additional surgical instruments, such as distracters, and decreases the load on tissues included in stabilization.
- the device assures an adjustable range of distraction with the use of only one device, without the necessity of having the full dimensional series.
- Application of multilevel stabilization allows distribution of loads on a greater surface and a longer spinal segment, and it also improves spinal biomechanics. Stabilization of many spinal levels affects unloading dysfunctional vertebrae, which can be additionally supported by employing other ways of stabilization.
- the device and the method of its implantation are characterized by small invasiveness, unilateral surgical approach, which allows for retainment of the supraspinous ligament, which is of importance in stabilizing the posterior spinal column. In some cases, justified by the clinical condition, the device can also be used bilaterally. Implantation of the device is easy and quick, thus affecting the duration of surgery and can be realized in variants, depending on restrictions of the operating field following from the level and anatomy of the osteoarticular system being stabilized.
- the plane of closing the device by rotational and rotational-sliding movement can be approximate to the sagittal plane of the spine or can be inclined to it at an angle of 90°, which gives an operating surgeon greater possibilities of installation.
- the construction and dimensions of the device offer possibilities of treating patients from various age groups.
- fig. 1 illustrates one embodiment of the device depicting elements of the blocking mechanism
- fig. 2 shows in the section a fragment of the movable connection of the bars
- fig. 3 illustrates one embodiment of the device in axonometric projection in an open position with perpendicular orientation of bearings and a part section depicting the blocking mechanism
- fig. 4 illustrates in axonometric projection one embodiment of the device with shaped gaps provided with sockets and the movable bearing and plate of the blocking mechanism
- fig. 5 illustrates in axonometric projection one embodiment of the device with the one-arm guideline, blocking mechanism in the form of a pin and clamping band
- the unloading-dynamic intervertebral device is composed of two movable cooperating bars 1 ,2, whose implantation in the area of spinal dysfunction consists in passing from the open position to closed position making use of the simultaneous displacement of bony elements during distraction.
- Each bar 1 , 2 is ended from one side with a shaped bearing 3, 4 for vertebral bony elements, such as: the spinous process or the neural arch.
- one of the bars - bar 1 is ended with a two-arm guideline 5, whereas the other bar - bar 2 with a guide 6.
- Sliding-rotational and rotational cooperation of bars 1 , 2 crossing in an open position is realized by: tangs 7 situated on internal surfaces of guideline 5 and blind shaped gaps 8 in guide 6, as shown in fig. 2.
- a blocking mechanism In a closed position of the device, the reverse movement of bars 1 , 2 is blocked by a blocking mechanism.
- This mechanism consists of notch 9 situated on the end of guide 6 and projection 10 made in the guideline 3 cooperating with it.
- notch 9 is made in guideline 3
- projection 10 constitutes a constructional fragment of the end of guide 6 .
- Sliding-rotational and rotational cooperation of bars 1 , 2 which cross with each other in the open position is realized by the ends of tang 7 fastened in guide 6 which cooperate with two through shaped gaps 8 made in the guideline 5.
- variously oriented bearings 3, 4 allow the device to rest at the same time on the spinous process of one vertebra and the neural arch of the other vertebra.
- shaped gaps 8 in the guideline 5 are provided with sockets 1 1 situated in pairs and cooperating with two tangs 7 situated in the guide 6.
- Such a configuration constitutes the mechanism blocking the sliding-rotational movement of bars 1, 2 and assures an adjustable range of distraction with the use of only one device, without the necessity of having a full series of dimensions.
- shaped gaps 8 are provided with an input canal 12.
- the device is provided with an additional mechanism blocking the rotational movement of bars 1 , 2 in the closed position in the form of a plate 13 located in gaps 8 of the two-arm guideline 5 and rested on the guide, as shown in fig. 4.
- an additional mechanism blocking the rotational movement of bars 1 , 2 in the closed position in the form of a plate 13 located in gaps 8 of the two-arm guideline 5 and rested on the guide, as shown in fig. 4.
- Elements of the connection may constitute a three-dimensional joint, as in fig. 4 or a flat one, as shown in fig. 5.
- a threaded pin 14 passing through the one-arm guideline 5 and guide 6 constitutes the blocking mechanism.
- the device is provided with means 15 which guides band 16, which secures the device, thanks to its fixation to bony elements, against shifting in the patient's body.
- the bearing 4 is provided with two incisions 17 increasing its resilience and giving the device dynamic features.
- the device is equipped with scale 18 of angular arrangement of bars 1 , 2 in an open position, which provides information about the range of distraction in the closed position of the device.
Abstract
Description
Claims
Priority Applications (10)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2775752A CA2775752C (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
IN2231DEN2012 IN2012DN02231A (en) | 2009-10-09 | 2010-10-06 | |
KR1020127006799A KR101701171B1 (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
RU2012110892/14A RU2561572C2 (en) | 2009-10-09 | 2010-10-06 | Relieving dynamic intervertebral device |
AU2010304038A AU2010304038B2 (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
MX2012004187A MX2012004187A (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device. |
BR112012008248A BR112012008248A2 (en) | 2009-10-09 | 2010-10-06 | intervertebral dynamic discharge device. |
EP10779060.2A EP2485668B1 (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
CN201080044893.XA CN102573680B (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
IL218863A IL218863A (en) | 2009-10-09 | 2012-03-27 | Unloading-dynamic intervertebral device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PLP-389241 | 2009-10-09 | ||
PL389241A PL217862B1 (en) | 2009-10-09 | 2009-10-09 | Off-load-dynamic intervertebral device |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011043681A1 true WO2011043681A1 (en) | 2011-04-14 |
Family
ID=43413929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/PL2010/000101 WO2011043681A1 (en) | 2009-10-09 | 2010-10-06 | Unloading-dynamic intervertebral device |
Country Status (13)
Country | Link |
---|---|
US (1) | US9017383B2 (en) |
EP (1) | EP2485668B1 (en) |
KR (1) | KR101701171B1 (en) |
CN (1) | CN102573680B (en) |
AU (1) | AU2010304038B2 (en) |
BR (1) | BR112012008248A2 (en) |
CA (1) | CA2775752C (en) |
IL (1) | IL218863A (en) |
IN (1) | IN2012DN02231A (en) |
MX (1) | MX2012004187A (en) |
PL (1) | PL217862B1 (en) |
RU (1) | RU2561572C2 (en) |
WO (1) | WO2011043681A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2117470B1 (en) * | 2007-02-06 | 2013-03-06 | Pioneer Surgical Technology, Inc. | Intervertebral implant devices |
US10448977B1 (en) * | 2012-03-31 | 2019-10-22 | Ali H. MESIWALA | Interspinous device and related methods |
US9668773B2 (en) * | 2013-03-14 | 2017-06-06 | Globus Medical, Inc. | Spinal implant for use in thoracic insufficiency syndrome |
US20160022324A1 (en) * | 2013-11-13 | 2016-01-28 | Ant Technology | Interspinous fusion implant |
US11627997B1 (en) * | 2020-10-01 | 2023-04-18 | Jason Zook | Lumbar spinous process static and dynamic stabilization device |
TWI784572B (en) * | 2021-06-16 | 2022-11-21 | 兆峰生技股份有限公司 | Spinous process expanding and supporting device and method |
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2009
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-
2010
- 2010-10-06 BR BR112012008248A patent/BR112012008248A2/en not_active IP Right Cessation
- 2010-10-06 RU RU2012110892/14A patent/RU2561572C2/en not_active IP Right Cessation
- 2010-10-06 CA CA2775752A patent/CA2775752C/en not_active Expired - Fee Related
- 2010-10-06 AU AU2010304038A patent/AU2010304038B2/en not_active Ceased
- 2010-10-06 MX MX2012004187A patent/MX2012004187A/en active IP Right Grant
- 2010-10-06 CN CN201080044893.XA patent/CN102573680B/en not_active Expired - Fee Related
- 2010-10-06 EP EP10779060.2A patent/EP2485668B1/en not_active Not-in-force
- 2010-10-06 IN IN2231DEN2012 patent/IN2012DN02231A/en unknown
- 2010-10-06 WO PCT/PL2010/000101 patent/WO2011043681A1/en active Application Filing
- 2010-10-06 KR KR1020127006799A patent/KR101701171B1/en active IP Right Grant
- 2010-10-08 US US12/900,787 patent/US9017383B2/en not_active Expired - Fee Related
-
2012
- 2012-03-27 IL IL218863A patent/IL218863A/en not_active IP Right Cessation
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US5439463A (en) | 1993-11-12 | 1995-08-08 | Lin; Chih-I | Spinal clamping device |
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Also Published As
Publication number | Publication date |
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CA2775752C (en) | 2014-04-22 |
EP2485668A1 (en) | 2012-08-15 |
AU2010304038B2 (en) | 2015-07-02 |
AU2010304038A1 (en) | 2012-04-05 |
BR112012008248A2 (en) | 2019-09-24 |
IL218863A (en) | 2016-04-21 |
PL389241A1 (en) | 2011-04-11 |
CA2775752A1 (en) | 2011-04-14 |
MX2012004187A (en) | 2012-05-08 |
RU2012110892A (en) | 2013-11-20 |
PL217862B1 (en) | 2014-08-29 |
CN102573680A (en) | 2012-07-11 |
EP2485668B1 (en) | 2016-03-09 |
IL218863A0 (en) | 2012-06-28 |
US20110087286A1 (en) | 2011-04-14 |
KR20120093841A (en) | 2012-08-23 |
CN102573680B (en) | 2015-04-08 |
RU2561572C2 (en) | 2015-08-27 |
KR101701171B1 (en) | 2017-02-01 |
IN2012DN02231A (en) | 2015-08-21 |
US9017383B2 (en) | 2015-04-28 |
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