EP1105059A1 - Element d'ancrage osseux comprenant une rotule clipsable - Google Patents

Element d'ancrage osseux comprenant une rotule clipsable

Info

Publication number
EP1105059A1
EP1105059A1 EP98938570A EP98938570A EP1105059A1 EP 1105059 A1 EP1105059 A1 EP 1105059A1 EP 98938570 A EP98938570 A EP 98938570A EP 98938570 A EP98938570 A EP 98938570A EP 1105059 A1 EP1105059 A1 EP 1105059A1
Authority
EP
European Patent Office
Prior art keywords
bone anchoring
anchoring element
central axis
connecting part
bone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98938570A
Other languages
German (de)
English (en)
Inventor
Beatrice Steiner
Max Aebi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AO Technology AG
Original Assignee
Synthes AG Chur
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Synthes AG Chur filed Critical Synthes AG Chur
Publication of EP1105059A1 publication Critical patent/EP1105059A1/fr
Withdrawn legal-status Critical Current

Links

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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8038—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers the additional component being inserted in the screw head
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7004—Longitudinal elements, e.g. rods with a cross-section which varies along its length
    • A61B17/7007—Parts of the longitudinal elements, e.g. their ends, being specially adapted to fit around the screw or hook heads
    • 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
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/701—Longitudinal elements with a non-circular, e.g. rectangular, cross-section
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8004—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with means for distracting or compressing the bone or bones
    • 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
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/8635—Tips of screws
    • 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
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated

Definitions

  • a bearing body which can be designed, for example, as a bone plate, and the bone screw are coupled to one another by means of a ball joint.
  • the ball joint enables the bone screw to be pivoted until the joint is blocked by means of a clamping element.
  • the socket-shaped receptacle for the ball head of the bone screw only permits one-sided insertion of the bone screw into the bearing body from above, so that the bone screw must be screwed into the bone together with the bearing body.
  • the bone anchoring element in a preferred embodiment, it comprises a hollow cylindrical shaft with a spherical connecting part attached concentrically to its central axis at the upper end of the shaft.
  • This spherical connecting part can be inserted into a corresponding cavity in a further implant.
  • the design of the spherical connecting part with tongues that can be deflected and rebounded in the radial direction to the central axis gives the connecting part an elasticity.
  • This elastic design of the connecting part enables its compression or expansion, as a result of which the connecting part can be detachably snapped into the cavity of the further implant.
  • Means are also provided on the connecting part, which allow its expansion. This makes it possible to establish the connecting part in the cavity and thus to fix the bone anchoring element with respect to the further implant.
  • These means comprise a bore penetrating into the connecting part from the end face.
  • the bore is provided with a conical recess in the part of the connecting part directed against the end face. This tapers from the end face towards the interior of the connecting part to a certain depth at which the conical recess ends forming a shoulder opposite the bore.
  • the bore is provided with an internal thread, which enables a clamping screw to be screwed in with a conical screw head corresponding to the screwing.
  • the cone angle of the screw head does not necessarily have to match that of the screwing.
  • One of the plates has a continuous surface to its area with the thickness X on its upper cover surface, while the other plate has a continuous surface to its area with the thickness X on its lower cover surface.
  • the parts of the plates, which are reduced in thickness, can thus be pushed one above the other in such a way that the two inserted connecting parts of the bone anchoring elements lie in the same plane.
  • the bone anchoring elements are displaceable by a distance Z from one another due to the displaceability of the plates along their longitudinal axis.
  • the distance Z is between 20 to 60 mm, preferably between 30 to 50 mm.
  • the means in the plates for receiving the spherical connecting parts are designed as spherical-layer-shaped cavities in such a way that the connecting parts can be snapped into the cavities.
  • the connecting means which are also formed in the form of a spherical layer, are pivotably mounted. This pivotability of the central axes of the bone anchoring elements in relation to the solder to the lower cover surface of the plates thus achieved covers an angular range between 15 ° and 25 °.
  • the spherical layer-shaped cavities in the plates are designed so that they are perpendicular to the central axis Equatorial plane lies at a distance Y ⁇ X from the upper cover surface, this distance Y advantageously being between 50% and 75% of the thickness X of the plates.
  • FIGS. 1 and 2 shows a partial section of the embodiment of the bone anchoring element according to the invention shown in FIGS. 1 and 2 with a connecting plate;
  • FIG. 5 shows a plan view of the embodiment of the device according to the invention shown in FIG. 4.
  • FIG. 1 and 2 show a variant of the bone anchoring element 1 according to the invention.
  • This comprises a hollow cylindrical shaft 3 with a central axis 2, a lower end 11 and an upper end 10. Concentric to the central axis 2, a spherical connecting part 6 is attached to the upper end 10 of the shaft 3. Due to the design of the spherical connecting part 6 with tongues 14 which can be deflected and rebounded in the radial direction to the central axis 2, the connecting part 6 obtains an elasticity.
  • the tongues 14 are formed by slots 7, which run parallel to the central axis 2 and penetrate the spherical connecting part 6 at a depth that extends deeper than the equatorial plane perpendicular to the central axis 2.
  • the connecting part 6 is designed as a spherical layer with a spherical diameter D and a layer height U.
  • the ratio U / D of the layer height U to the ball diameter D is 58% here.
  • a semicircular recess 9 is provided between the spherical layer-shaped connecting part 6 and the upper end 10 of the shaft 3.
  • Means 12 are also provided on the connecting part 6; 13; 34, which allow its expansion. This means 12; 13; 34 comprise a bore 34 penetrating from the end face 15 into the connecting part 6.
  • the bore 34 is provided with a conical recess 13 in the part of the connecting part 6 directed against the end face 15. This tapers from the end face 15 towards the inside of the connecting part 6 to a certain depth at which the conical recess 13 ends forming a shoulder 36 opposite the bore 34.
  • the bore 34 is provided with an internal thread 42, which enables the screwing in of a clamping screw with a conical screw head corresponding to the screwing 13.
  • the shaft 3 of the bone anchoring element 1 has a height H in the direction of the central axis 2 and is provided with a bore 5 which is concentric with the central axis 2 and which has a depth T ⁇ H from the lower end 11 opposite the connecting part 6.
  • the outer surface 35 of the shaft 3 has an external thread 4.
  • the shaft 3 is provided at its upper end 10 with a larger diameter than the shaft 3 having flange 39.
  • This flange 39 has six semicircular notches 40 which are at an angle of 60 ° to one another.
  • the bone anchoring element 1 can be screwed into the bone by means of these notches 40 and a suitable tool. Instead of the notches 40, the flange 39 could also be provided with an external hexagon.
  • the flange 39 also serves to prevent the bone anchoring element 1 from being screwed too far into the bone or the vertebral body.
  • the connecting parts 6 provided with slots 7 and a likewise conical recess 13 are clamped against the wall of the spherical bores serving as means 19 for receiving the connecting parts 6 by means of the conical screw heads.
  • the bone anchoring element 1 can be compared to the solder to the plates 21; 22 fix in the swiveled position by an angle of 20 ° in the plate 21; 22.
  • the other plate 21 is provided with an elongated hole 38 through which the locking means 27 passes. Through the slot 38, the plates 21; 22 slidable against each other.
  • the plates 21; 22 have a common longitudinal axis 30, a lower and an upper cover surface 16; 18. In the area of the means 19 designed as spherical cavities for receiving the connecting parts 6, the plates 21; 22 has a thickness X.
  • the plates 21; 22 overlap on part of their length extending along the longitudinal axis 30. On this part the thickness of the plates 21, 22 is reduced to X / 2.
  • One of the plates 22 has a continuous surface to its area with the thickness X on its upper cover surface 16, while the other plate 21 has a continuous surface to its area with the thickness X on its lower cover surface 18.
  • the lateral surface 35 of the shaft 3 has an external thread 4 and is formed as a smooth surface over a partial length W measured from the lower end 11.
  • the side wall of the shaft 3, which is of a hollow cylindrical design over this partial length, is perforated with radial through openings 31.
  • the external thread 4 is advantageously designed to be self-forming.
  • the lower end 11 of the shaft 3 opposite the connecting part 6 is provided on the end face with tangentially arranged cutting teeth 32.
  • the connecting means 6, which are also formed in the form of a spherical layer, are pivotably mounted therein. This thus achieved pivotability of the central axes 2 of the bone anchoring elements 1 with respect to the perpendicular to the lower cover surface 18 of the plates 21; 22 comprises an angle 29 from inside 16 ° and outside 19 °.
  • a Kirschner wire is first introduced concentrically into the bone.
  • the bone anchoring element 1 is then screwed directly into the bone or vertebral body by means of a key which snaps into the ball head of the connecting part 6 and engages outside in the six notches 40.
  • the key is pierced and is passed through the previously inserted Kirschner wire.
  • the channel for receiving the hollow cylindrical shaft 3 is worked out of the bone by the incisors 31.
  • the resulting bone chips are discharged into the interior of the hollow cylindrical shaft 3.
  • the Kirschner wire can be removed again.
  • the second bone anchoring element 1 is also introduced into the bone.
  • the entire implant can be blocked in a desired position.

Landscapes

  • 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)
  • Prostheses (AREA)

Abstract

L'invention concerne un élément d'ancrage osseux (1) comprenant (A) une tige cylindrique ou conique (3) que l'on implante dans l'os et qui possède une extrémité inférieure (11) ; et (B) un raccord sphérique (6) appliqué sur l'extrémité supérieure (10) de façon concentrique à l'axe central (2). Ce raccord (6) peut être inséré dans la cavité correspondante d'un implant. C) Le raccord (6) étant radialement compressible ou expansible de façon élastique par rapport à l'axe central (2), il est enclipsable de façon amovible dans la cavité de l'implant, dans laquelle il peut être logé de façon rotative. D) Le raccord (6) présente des moyens (12) permettant son expansion de telle façon qu'il soit bloqué dans cette cavité une fois inséré dans cette cavité. L'invention concerne également un dispositif de fixation osseuse comprenant deux éléments d'ancrage osseux (1) qui présentent A) au moins une plaque (21 ; 22) d'une épaisseur X, qui est dotée d'un axe central (30), d'une surface de revêtement supérieure (16) et d'une surface de revêtement inférieure (18) et qui est pourvue de moyens (19) destinés à recevoir les raccords (6) des deux éléments d'ancrage osseux (1) ; et B) de moyens (24) permettant la fixation des éléments d'ancrage osseux (1) dans la ou les plaque(s) (21 ; 22), C) les deux éléments d'ancrage osseux (1) pouvant être déplacés dans le sens de l'axe central (30).
EP98938570A 1998-08-21 1998-08-21 Element d'ancrage osseux comprenant une rotule clipsable Withdrawn EP1105059A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH1998/000360 WO2000010474A1 (fr) 1998-08-21 1998-08-21 Element d'ancrage osseux comprenant une rotule clipsable

Publications (1)

Publication Number Publication Date
EP1105059A1 true EP1105059A1 (fr) 2001-06-13

Family

ID=4551345

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98938570A Withdrawn EP1105059A1 (fr) 1998-08-21 1998-08-21 Element d'ancrage osseux comprenant une rotule clipsable

Country Status (7)

Country Link
US (1) US6508818B2 (fr)
EP (1) EP1105059A1 (fr)
JP (1) JP2002523129A (fr)
AU (1) AU747042B2 (fr)
CA (1) CA2341305A1 (fr)
WO (1) WO2000010474A1 (fr)
ZA (1) ZA994847B (fr)

Families Citing this family (161)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2178243T3 (es) * 1998-08-21 2002-12-16 Synthes Ag Elemento de anclaje oseo bajo forma de cilindro hueco autocortante.
AR027685A1 (es) * 2000-03-22 2003-04-09 Synthes Ag Forma de tejido y metodo para realizarlo
US7833250B2 (en) 2004-11-10 2010-11-16 Jackson Roger P Polyaxial bone screw with helically wound capture connection
US8377100B2 (en) * 2000-12-08 2013-02-19 Roger P. Jackson Closure for open-headed medical implant
US6726689B2 (en) * 2002-09-06 2004-04-27 Roger P. Jackson Helical interlocking mating guide and advancement structure
US8353932B2 (en) 2005-09-30 2013-01-15 Jackson Roger P Polyaxial bone anchor assembly with one-piece closure, pressure insert and plastic elongate member
US10729469B2 (en) 2006-01-09 2020-08-04 Roger P. Jackson Flexible spinal stabilization assembly with spacer having off-axis core member
US7862587B2 (en) 2004-02-27 2011-01-04 Jackson Roger P Dynamic stabilization assemblies, tool set and method
US8292926B2 (en) 2005-09-30 2012-10-23 Jackson Roger P Dynamic stabilization connecting member with elastic core and outer sleeve
US10258382B2 (en) * 2007-01-18 2019-04-16 Roger P. Jackson Rod-cord dynamic connection assemblies with slidable bone anchor attachment members along the cord
US7766947B2 (en) 2001-10-31 2010-08-03 Ortho Development Corporation Cervical plate for stabilizing the human spine
US8876868B2 (en) 2002-09-06 2014-11-04 Roger P. Jackson Helical guide and advancement flange with radially loaded lip
US8282673B2 (en) 2002-09-06 2012-10-09 Jackson Roger P Anti-splay medical implant closure with multi-surface removal aperture
US20060009773A1 (en) * 2002-09-06 2006-01-12 Jackson Roger P Helical interlocking mating guide and advancement structure
US8257402B2 (en) * 2002-09-06 2012-09-04 Jackson Roger P Closure for rod receiving orthopedic implant having left handed thread removal
WO2004089245A2 (fr) * 2003-04-04 2004-10-21 Theken Surgical, Llc Element d'ancrage osseux
US6716214B1 (en) * 2003-06-18 2004-04-06 Roger P. Jackson Polyaxial bone screw with spline capture connection
US7621918B2 (en) 2004-11-23 2009-11-24 Jackson Roger P Spinal fixation tool set and method
US8540753B2 (en) 2003-04-09 2013-09-24 Roger P. Jackson Polyaxial bone screw with uploaded threaded shank and method of assembly and use
US8652175B2 (en) * 2003-05-02 2014-02-18 Rachiotek, Llc Surgical implant devices and systems including a sheath member
US20050182401A1 (en) * 2003-05-02 2005-08-18 Timm Jens P. Systems and methods for spine stabilization including a dynamic junction
US20050177164A1 (en) * 2003-05-02 2005-08-11 Carmen Walters Pedicle screw devices, systems and methods having a preloaded set screw
US20050171543A1 (en) * 2003-05-02 2005-08-04 Timm Jens P. Spine stabilization systems and associated devices, assemblies and methods
AU2004235772B2 (en) 2003-05-02 2008-12-11 Yale University Dynamic spine stabilizer
US20050182400A1 (en) * 2003-05-02 2005-08-18 Jeffrey White Spine stabilization systems, devices and methods
US7713287B2 (en) * 2003-05-02 2010-05-11 Applied Spine Technologies, Inc. Dynamic spine stabilizer
US7615068B2 (en) * 2003-05-02 2009-11-10 Applied Spine Technologies, Inc. Mounting mechanisms for pedicle screws and related assemblies
US7377923B2 (en) 2003-05-22 2008-05-27 Alphatec Spine, Inc. Variable angle spinal screw assembly
US8257398B2 (en) * 2003-06-18 2012-09-04 Jackson Roger P Polyaxial bone screw with cam capture
US8366753B2 (en) 2003-06-18 2013-02-05 Jackson Roger P Polyaxial bone screw assembly with fixed retaining structure
US7776067B2 (en) 2005-05-27 2010-08-17 Jackson Roger P Polyaxial bone screw with shank articulation pressure insert and method
US8398682B2 (en) * 2003-06-18 2013-03-19 Roger P. Jackson Polyaxial bone screw assembly
US7766915B2 (en) * 2004-02-27 2010-08-03 Jackson Roger P Dynamic fixation assemblies with inner core and outer coil-like member
US8092500B2 (en) * 2007-05-01 2012-01-10 Jackson Roger P Dynamic stabilization connecting member with floating core, compression spacer and over-mold
US8936623B2 (en) 2003-06-18 2015-01-20 Roger P. Jackson Polyaxial bone screw assembly
US8377102B2 (en) 2003-06-18 2013-02-19 Roger P. Jackson Polyaxial bone anchor with spline capture connection and lower pressure insert
US20100211114A1 (en) * 2003-06-18 2010-08-19 Jackson Roger P Polyaxial bone anchor with shelf capture connection
US8137386B2 (en) 2003-08-28 2012-03-20 Jackson Roger P Polyaxial bone screw apparatus
US7967850B2 (en) 2003-06-18 2011-06-28 Jackson Roger P Polyaxial bone anchor with helical capture connection, insert and dual locking assembly
US7179261B2 (en) 2003-12-16 2007-02-20 Depuy Spine, Inc. Percutaneous access devices and bone anchor assemblies
US11419642B2 (en) 2003-12-16 2022-08-23 Medos International Sarl Percutaneous access devices and bone anchor assemblies
US7527638B2 (en) 2003-12-16 2009-05-05 Depuy Spine, Inc. Methods and devices for minimally invasive spinal fixation element placement
US7621938B2 (en) * 2004-01-15 2009-11-24 Warsaw Orthopedic, Inc. Spinal implant construct and method for implantation
US7160300B2 (en) 2004-02-27 2007-01-09 Jackson Roger P Orthopedic implant rod reduction tool set and method
US9050148B2 (en) 2004-02-27 2015-06-09 Roger P. Jackson Spinal fixation tool attachment structure
AU2004317551B2 (en) 2004-02-27 2008-12-04 Roger P. Jackson Orthopedic implant rod reduction tool set and method
US8152810B2 (en) 2004-11-23 2012-04-10 Jackson Roger P Spinal fixation tool set and method
US20060015100A1 (en) * 2004-06-23 2006-01-19 Panjabi Manohar M Spinal stabilization devices coupled by torsional member
US7651502B2 (en) 2004-09-24 2010-01-26 Jackson Roger P Spinal fixation tool set and method for rod reduction and fastener insertion
US8926672B2 (en) 2004-11-10 2015-01-06 Roger P. Jackson Splay control closure for open bone anchor
EP1811911A4 (fr) 2004-11-10 2012-01-11 Roger P Jackson Guide helicoidal et rebord de glissement comportant des prolongements cassables
US9980753B2 (en) 2009-06-15 2018-05-29 Roger P Jackson pivotal anchor with snap-in-place insert having rotation blocking extensions
US7875065B2 (en) * 2004-11-23 2011-01-25 Jackson Roger P Polyaxial bone screw with multi-part shank retainer and pressure insert
US8444681B2 (en) 2009-06-15 2013-05-21 Roger P. Jackson Polyaxial bone anchor with pop-on shank, friction fit retainer and winged insert
US8308782B2 (en) 2004-11-23 2012-11-13 Jackson Roger P Bone anchors with longitudinal connecting member engaging inserts and closures for fixation and optional angulation
US9168069B2 (en) 2009-06-15 2015-10-27 Roger P. Jackson Polyaxial bone anchor with pop-on shank and winged insert with lower skirt for engaging a friction fit retainer
US9216041B2 (en) 2009-06-15 2015-12-22 Roger P. Jackson Spinal connecting members with tensioned cords and rigid sleeves for engaging compression inserts
US8172855B2 (en) 2004-11-24 2012-05-08 Abdou M S Devices and methods for inter-vertebral orthopedic device placement
WO2006069089A2 (fr) * 2004-12-21 2006-06-29 Packaging Service Corporation Of Kentucky Systeme de plaque cervicale
US20060229613A1 (en) * 2004-12-31 2006-10-12 Timm Jens P Sheath assembly for spinal stabilization device
US7901437B2 (en) 2007-01-26 2011-03-08 Jackson Roger P Dynamic stabilization member with molded connection
US10076361B2 (en) 2005-02-22 2018-09-18 Roger P. Jackson Polyaxial bone screw with spherical capture, compression and alignment and retention structures
US7476239B2 (en) * 2005-05-10 2009-01-13 Jackson Roger P Polyaxial bone screw with compound articulation
AU2020257035B2 (en) * 2005-03-17 2021-12-23 Spinal Elements, Inc. Implant system for treating the spine
US8496708B2 (en) * 2005-03-17 2013-07-30 Spinal Elements, Inc. Flanged interbody fusion device with hinge
US7780706B2 (en) 2005-04-27 2010-08-24 Trinity Orthopedics, Llc Mono-planar pedicle screw method, system and kit
US7811309B2 (en) * 2005-07-26 2010-10-12 Applied Spine Technologies, Inc. Dynamic spine stabilization device with travel-limiting functionality
US7699875B2 (en) * 2006-04-17 2010-04-20 Applied Spine Technologies, Inc. Spinal stabilization device with weld cap
US7713288B2 (en) * 2005-08-03 2010-05-11 Applied Spine Technologies, Inc. Spring junction and assembly methods for spinal device
US8105368B2 (en) * 2005-09-30 2012-01-31 Jackson Roger P Dynamic stabilization connecting member with slitted core and outer sleeve
US20070093815A1 (en) * 2005-10-11 2007-04-26 Callahan Ronald Ii Dynamic spinal stabilizer
US20070093814A1 (en) * 2005-10-11 2007-04-26 Callahan Ronald Ii Dynamic spinal stabilization systems
US20070093813A1 (en) * 2005-10-11 2007-04-26 Callahan Ronald Ii Dynamic spinal stabilizer
US7704271B2 (en) * 2005-12-19 2010-04-27 Abdou M Samy Devices and methods for inter-vertebral orthopedic device placement
US20080294198A1 (en) * 2006-01-09 2008-11-27 Jackson Roger P Dynamic spinal stabilization assembly with torsion and shear control
US7695473B2 (en) * 2006-01-18 2010-04-13 Biodynamics Llc Adjustable bone plate
US20080147122A1 (en) * 2006-10-12 2008-06-19 Jackson Roger P Dynamic stabilization connecting member with molded inner segment and surrounding external elastomer
CA2670988C (fr) 2006-12-08 2014-03-25 Roger P. Jackson Systeme d'instruments pour implants rachidiens dynamiques
US9039768B2 (en) 2006-12-22 2015-05-26 Medos International Sarl Composite vertebral spacers and instrument
US8366745B2 (en) 2007-05-01 2013-02-05 Jackson Roger P Dynamic stabilization assembly having pre-compressed spacers with differential displacements
US8475498B2 (en) 2007-01-18 2013-07-02 Roger P. Jackson Dynamic stabilization connecting member with cord connection
US10792074B2 (en) 2007-01-22 2020-10-06 Roger P. Jackson Pivotal bone anchor assemly with twist-in-place friction fit insert
US8012177B2 (en) 2007-02-12 2011-09-06 Jackson Roger P Dynamic stabilization assembly with frusto-conical connection
US10383660B2 (en) 2007-05-01 2019-08-20 Roger P. Jackson Soft stabilization assemblies with pretensioned cords
US7942910B2 (en) 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US7942911B2 (en) 2007-05-16 2011-05-17 Ortho Innovations, Llc Polyaxial bone screw
US8197518B2 (en) 2007-05-16 2012-06-12 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
US7951173B2 (en) * 2007-05-16 2011-05-31 Ortho Innovations, Llc Pedicle screw implant system
US7942909B2 (en) 2009-08-13 2011-05-17 Ortho Innovations, Llc Thread-thru polyaxial pedicle screw system
US7947065B2 (en) 2008-11-14 2011-05-24 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
AU2008263148C1 (en) * 2007-05-31 2012-05-24 Roger P. Jackson Dynamic stabilization connecting member with pre-tensioned solid core
US8911477B2 (en) * 2007-10-23 2014-12-16 Roger P. Jackson Dynamic stabilization member with end plate support and cable core extension
US20090105764A1 (en) * 2007-10-23 2009-04-23 Jackson Roger P Dynamic stabilization member with fin support and solid core extension
US20090248092A1 (en) 2008-03-26 2009-10-01 Jonathan Bellas Posterior Intervertebral Disc Inserter and Expansion Techniques
FR2929106A1 (fr) * 2008-04-01 2009-10-02 Biospine Implants Soc Par Acti Embase reglable avant sa fixation s'integrant facilement dans un dispositif de remplacement de corps vertebral
ES2401235T3 (es) * 2008-05-07 2013-04-18 University Of Strathclyde Sistema y método para la caracterización de células
US8670617B2 (en) * 2008-05-14 2014-03-11 Terrago Technologies, Inc. Systems and methods for linking content to individual image features
WO2010147639A1 (fr) 2008-08-01 2010-12-23 Jackson Roger P Élément longitudinal de liaison avec cordons tendus gainés
US8075603B2 (en) 2008-11-14 2011-12-13 Ortho Innovations, Llc Locking polyaxial ball and socket fastener
US9220547B2 (en) 2009-03-27 2015-12-29 Spinal Elements, Inc. Flanged interbody fusion device
US9526620B2 (en) 2009-03-30 2016-12-27 DePuy Synthes Products, Inc. Zero profile spinal fusion cage
CN103826560A (zh) 2009-06-15 2014-05-28 罗杰.P.杰克逊 具有套接杆和带摩擦配合压缩套爪的带翼插件的多轴骨锚
CN103917181A (zh) 2009-06-15 2014-07-09 罗杰.P.杰克逊 包括套接杆和具有低外形边缘锁的摩擦配合保持件的多轴骨锚
US10363070B2 (en) 2009-06-15 2019-07-30 Roger P. Jackson Pivotal bone anchor assemblies with pressure inserts and snap on articulating retainers
US8998959B2 (en) 2009-06-15 2015-04-07 Roger P Jackson Polyaxial bone anchors with pop-on shank, fully constrained friction fit retainer and lock and release insert
US9668771B2 (en) 2009-06-15 2017-06-06 Roger P Jackson Soft stabilization assemblies with off-set connector
US11229457B2 (en) 2009-06-15 2022-01-25 Roger P. Jackson Pivotal bone anchor assembly with insert tool deployment
EP2485654B1 (fr) * 2009-10-05 2021-05-05 Jackson P. Roger Ancrage osseux polyaxial avec élément de rétention non rotatif et tige fixée par pression, et ajustement par frottement
EP2329780B1 (fr) * 2009-12-03 2013-02-20 Biedermann Technologies GmbH & Co. KG Vis à os
ES2535939T3 (es) * 2009-12-03 2015-05-19 Biedermann Technologies Gmbh & Co. Kg Tornillo óseo
US8764806B2 (en) 2009-12-07 2014-07-01 Samy Abdou Devices and methods for minimally invasive spinal stabilization and instrumentation
US9393129B2 (en) 2009-12-10 2016-07-19 DePuy Synthes Products, Inc. Bellows-like expandable interbody fusion cage
ES2456317T3 (es) 2010-02-26 2014-04-22 Biedermann Technologies Gmbh & Co. Kg Tornillo óseo
US20120029639A1 (en) * 2010-07-29 2012-02-02 Warsaw Orthopedic, Inc. Interbody spinal implants and insertion techniques
US8480747B2 (en) 2010-08-11 2013-07-09 Warsaw Orthopedic, Inc. Interbody spinal implants with extravertebral support plates
US8579945B2 (en) * 2010-08-13 2013-11-12 DePuy Synthes Products, LLC Bone stabilization device
WO2012030712A1 (fr) 2010-08-30 2012-03-08 Zimmer Spine, Inc. Vis pédiculaire polyaxiale
AU2011299558A1 (en) 2010-09-08 2013-05-02 Roger P. Jackson Dynamic stabilization members with elastic and inelastic sections
US11529241B2 (en) 2010-09-23 2022-12-20 DePuy Synthes Products, Inc. Fusion cage with in-line single piece fixation
US20120078373A1 (en) 2010-09-23 2012-03-29 Thomas Gamache Stand alone intervertebral fusion device
US20120078372A1 (en) 2010-09-23 2012-03-29 Thomas Gamache Novel implant inserter having a laterally-extending dovetail engagement feature
US8454694B2 (en) 2011-03-03 2013-06-04 Warsaw Orthopedic, Inc. Interbody device and plate for spinal stabilization and instruments for positioning same
US9480510B2 (en) 2011-03-23 2016-11-01 Spinecraft, LLC Devices, systems and methods of attaching same to the spine
JP5865479B2 (ja) 2011-03-24 2016-02-17 ロジャー・ピー・ジャクソン 複合関節とポップ装着式シャンクとを有する多軸の骨アンカー
US8562651B2 (en) * 2011-03-30 2013-10-22 Warsaw Orthopedic, Inc. Sacroiliac terminal anchor device and method
US9248028B2 (en) 2011-09-16 2016-02-02 DePuy Synthes Products, Inc. Removable, bone-securing cover plate for intervertebral fusion cage
US8845728B1 (en) 2011-09-23 2014-09-30 Samy Abdou Spinal fixation devices and methods of use
WO2013106217A1 (fr) 2012-01-10 2013-07-18 Jackson, Roger, P. Fermetures à départs multiples pour implants ouverts
US20130226240A1 (en) 2012-02-22 2013-08-29 Samy Abdou Spinous process fixation devices and methods of use
US9271836B2 (en) * 2012-03-06 2016-03-01 DePuy Synthes Products, Inc. Nubbed plate
US9198767B2 (en) 2012-08-28 2015-12-01 Samy Abdou Devices and methods for spinal stabilization and instrumentation
US9320617B2 (en) 2012-10-22 2016-04-26 Cogent Spine, LLC Devices and methods for spinal stabilization and instrumentation
US10182921B2 (en) 2012-11-09 2019-01-22 DePuy Synthes Products, Inc. Interbody device with opening to allow packing graft and other biologics
US8911478B2 (en) 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
US9301783B2 (en) 2013-01-23 2016-04-05 Fixx Orthopedics, LLC Orthopedic external fixation device
US10058354B2 (en) 2013-01-28 2018-08-28 Roger P. Jackson Pivotal bone anchor assembly with frictional shank head seating surfaces
US8852239B2 (en) 2013-02-15 2014-10-07 Roger P Jackson Sagittal angle screw with integral shank and receiver
WO2014143894A1 (fr) * 2013-03-15 2014-09-18 NuTech Spine, Inc. Procédé et dispositif de spondylodèse lombaire antérieure
GB2512063B (en) * 2013-03-18 2019-05-29 Fitzbionics Ltd Spinal implant assembly
US9453526B2 (en) 2013-04-30 2016-09-27 Degen Medical, Inc. Bottom-loading anchor assembly
US9283091B2 (en) * 2013-10-07 2016-03-15 Warsaw Orthopedic, Inc. Spinal implant system and method
US9566092B2 (en) 2013-10-29 2017-02-14 Roger P. Jackson Cervical bone anchor with collet retainer and outer locking sleeve
US9717533B2 (en) 2013-12-12 2017-08-01 Roger P. Jackson Bone anchor closure pivot-splay control flange form guide and advancement structure
US9451993B2 (en) 2014-01-09 2016-09-27 Roger P. Jackson Bi-radial pop-on cervical bone anchor
US10064658B2 (en) 2014-06-04 2018-09-04 Roger P. Jackson Polyaxial bone anchor with insert guides
US9597119B2 (en) 2014-06-04 2017-03-21 Roger P. Jackson Polyaxial bone anchor with polymer sleeve
AU2016212009C1 (en) 2015-01-27 2021-02-25 Spinal Elements, Inc. Facet joint implant
US10166045B2 (en) 2015-02-27 2019-01-01 Fixx Orthopedics, LLC Orthopedic external fixation device
US9615931B2 (en) * 2015-03-20 2017-04-11 Globus Medical, Inc. Surgical plate systems
AU2016339357B2 (en) * 2015-10-13 2019-08-15 Cg Bio Co., Ltd. Cervical spine fixation apparatus
US10857003B1 (en) 2015-10-14 2020-12-08 Samy Abdou Devices and methods for vertebral stabilization
US10034771B2 (en) 2016-05-11 2018-07-31 Warsaw Orthopedic, Inc. Spinal implant system and method
AU2016398373B2 (en) * 2016-10-05 2019-01-24 Wright Medical Technology, Inc. Implant peg with multiple components
US10973648B1 (en) 2016-10-25 2021-04-13 Samy Abdou Devices and methods for vertebral bone realignment
US10744000B1 (en) 2016-10-25 2020-08-18 Samy Abdou Devices and methods for vertebral bone realignment
US10624760B2 (en) 2017-05-22 2020-04-21 Warsaw Orthopedic, Inc. Spinal implant system and method
US10940016B2 (en) 2017-07-05 2021-03-09 Medos International Sarl Expandable intervertebral fusion cage
WO2020061487A1 (fr) 2018-09-20 2020-03-26 Amendia, Inc. d/b/a Spinal Elements Dispositif d'implant rachidien
US11179248B2 (en) 2018-10-02 2021-11-23 Samy Abdou Devices and methods for spinal implantation
CA3145467A1 (fr) * 2019-07-03 2021-01-07 Ergosurgical Group Corp. Dispositifs d'enfilage et leurs procedes de fabrication
US11911284B2 (en) 2020-11-19 2024-02-27 Spinal Elements, Inc. Curved expandable interbody devices and deployment tools

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB231155A (en) 1924-03-18 1925-06-25 Wiljo Nestor Kaernae Improvements in wood screws
DE867422C (de) * 1951-11-13 1953-02-16 Alfred Dr Med Abel Anschraubbare Knochenplatte zur Heilung von Knochenbruechen
CH648197A5 (de) * 1980-05-28 1985-03-15 Synthes Ag Implantat und zu dessen befestigung an einem knochen dienende schrauben.
US4537185A (en) * 1983-06-10 1985-08-27 Denis P. Stednitz Cannulated fixation screw
JPH02500490A (ja) * 1986-11-25 1990-02-22 シンセス　アクチエン　ゲゼルシャフト 骨接合装置
US5015247A (en) 1988-06-13 1991-05-14 Michelson Gary K Threaded spinal implant
US5129901A (en) 1991-06-10 1992-07-14 Decoste Vern X Cannulated orthopedic screw
AU710957B2 (en) * 1994-09-15 1999-09-30 Howmedica Osteonics Corp. Osteosynthesis apparatus
FR2726171B1 (fr) 1994-10-28 1997-01-24 Jbs Sa Dispositif de vis de liaison rehabitable pour articulation osseuse, destine notamment a la stabilisation d'au moins deux vertebres
US5860973A (en) 1995-02-27 1999-01-19 Michelson; Gary Karlin Translateral spinal implant
AU1997797A (en) * 1996-05-31 1997-12-04 Acromed Corporation An apparatus comprising a plate and a fastener for connecting the plate to a bone portion
DE29710979U1 (de) 1997-06-24 1997-08-21 Aesculap AG & Co. KG, 78532 Tuttlingen Implantat zur Fixierung von Knochenteilen und Werkzeug für dieses Implantat
US6156037A (en) 1998-10-28 2000-12-05 Sdgi Holdings, Inc. Anterior lateral spine cage-plate fixation device and technique

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0010474A1 *

Also Published As

Publication number Publication date
AU747042B2 (en) 2002-05-09
US6508818B2 (en) 2003-01-21
US20010007941A1 (en) 2001-07-12
JP2002523129A (ja) 2002-07-30
WO2000010474A1 (fr) 2000-03-02
ZA994847B (en) 2000-02-15
AU8725098A (en) 2000-03-14
CA2341305A1 (fr) 2000-03-02

Similar Documents

Publication Publication Date Title
EP1105059A1 (fr) Element d'ancrage osseux comprenant une rotule clipsable
EP1681024B1 (fr) Élément de fixation osseuse
EP1460952B1 (fr) Dispositif permettant de relier deux pieces a la maniere d'une articulation spherique
EP1838230B1 (fr) Dispositif a stabilite angulaire pour fixation mutuelle d'un support longitudinal a un element de fixation d'os
EP1030616B1 (fr) Implant pour la stabilisation d'une fracture et vis a utiliser en chirurgie
EP1261288B1 (fr) Element de connexion pour barres de stabilisation d'os ou de vertebres
EP3454767B1 (fr) Instrument à usage médical de fixation provisoire d'une vis de pédiculaire polyaxiale
EP0921766B1 (fr) Dispositif pour chirurgie osseuse
EP1105058B1 (fr) Element d'ancrage osseux sous forme de cylindre creux autocoupant
EP1608278B1 (fr) Logement pour un element de blocage et element de blocage
EP1274354B1 (fr) Dispositif permettant la connexion articulee de deux corps
DE69628757T2 (de) Mehrschichtverriegelungsvorrichtung für knochenbefestigungen
DE102005007674B4 (de) Orthopädisches Fixiersystem
DE19726754C2 (de) Implantat zur Fixierung von Knochenteilen und Werkzeug für dieses Implantat
WO2004052218A1 (fr) Dispositif pour stabiliser des os
EP1311198A1 (fr) Dispositif pour relier un element de fixation osseuse a une tige oblongue
WO2001003591A1 (fr) Vis a os a ajustage angulaire et dispositif de fixation pour os en os de synthese
DE19720782A1 (de) Vorrichtung zur Verbindung eines Längsträgers mit einer Pedikelschraube
DE10260222A1 (de) Rohrförmiges Element für ein in der Wirbelsäulen- oder der Knochenchirurgie zu verwendendes Implantat und Implantat mit einem solchen Element
WO2004030549A1 (fr) Dispositif pour fixer des os
EP1191891A1 (fr) Vis a os avec tete de vis constituees axialement de deux parties
EP1545357B1 (fr) Système pour l'ostéosynthèse
EP1648318B1 (fr) Dispositif pour fixer un support longitudinal a un element de fixation d'os
WO2003053265A1 (fr) Clou modulaire pour os
WO2003041601A1 (fr) Dispositif permettant d'assembler un support longitudinal et un moyen de fixation osseuse

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010113

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LI NL PT SE

17Q First examination report despatched

Effective date: 20031202

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20050330

REG Reference to a national code

Ref country code: HK

Ref legal event code: WD

Ref document number: 1037504

Country of ref document: HK