EP1720470A1 - Barre de jonction pour element de jonction osseuse - Google Patents

Barre de jonction pour element de jonction osseuse

Info

Publication number
EP1720470A1
EP1720470A1 EP04717003A EP04717003A EP1720470A1 EP 1720470 A1 EP1720470 A1 EP 1720470A1 EP 04717003 A EP04717003 A EP 04717003A EP 04717003 A EP04717003 A EP 04717003A EP 1720470 A1 EP1720470 A1 EP 1720470A1
Authority
EP
European Patent Office
Prior art keywords
connecting element
slots
longitudinal
cavity
radially
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Withdrawn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
EP04717003A
Other languages
German (de)
English (en)
Inventor
Robert Frigg
Bruno LÄNG
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.)
Synthes GmbH
Original Assignee
Synthes GmbH
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 GmbH filed Critical Synthes GmbH
Publication of EP1720470A1 publication Critical patent/EP1720470A1/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Withdrawn legal-status Critical Current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
    • 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
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
    • 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
    • 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
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
    • A61B17/7029—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form the entire longitudinal element being flexible
    • 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
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7083—Tools for guidance or insertion of tethers, rod-to-anchor connectors, rod-to-rod connectors, or longitudinal elements
    • 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
    • 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
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7031—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other made wholly or partly of flexible material

Definitions

  • the invention relates to a connecting element according to the preamble of patent claim 1.
  • Such connecting elements are suitable for bridging a plurality of bone anchoring elements implanted in the bone, in particular in the area of the spine, i.e. for bridging pedicle screws. They have been known for a long time, but they are always relatively rigid longitudinal beams, which are adapted to the anatomical or clinical course with special measures, i.e. must be bent.
  • a connecting element which does not consist of a single longitudinal beam, but consists of a large number of elastic wires lying loosely next to one another (bundle of rods).
  • a disadvantage of this known device is the risk that the individual wires can cross each other, which leads to unstable connections.
  • the invention seeks to remedy this.
  • the invention has for its object to provide a connecting element which has a greater elasticity during implantation, so that it can be deformed reversibly and which can be stiffened in the bone anchoring elements (e.g. pedicle screws) after fixation.
  • the invention solves this problem with a connecting element which has the features of claim 1.
  • the connecting element can be implanted in a minimally invasive manner through a curved tube and then by being fixed with the
  • Bone anchoring elements can stiffen. Compared to the known rod bundle mentioned above, there is the advantage that there is always a precisely defined one External shape is present, both in the resting state and in the radially tensioned state, ie after fixation in the bone anchoring elements.
  • the connecting element has a cavity running in the direction of the longitudinal axis, as a result of which a jacket is defined.
  • a jacket is defined.
  • the slotted jacket has the same outside diameter in both the clamped and unclamped state. In the case of a slotted rod with a full cross section, the material losses due to the slitting must be compensated for by reducing the outside diameter.
  • An additional advantage is that the rod cross-section is divided into two elements, whereby the bending stiffness of the pipe portion can be reduced.
  • the slots preferably penetrate the jacket radially and the cavity expediently extends continuously from the rear end to the front end, so that the connecting element is tubular.
  • the slots are arranged in such a way that the jacket remains connected.
  • the ends of the slots lie within the connecting element.
  • the ends of the slots on one side break through the rear end and / or the front end. In this embodiment there is a higher bending elasticity.
  • the connecting element is bent, a longitudinal displacement of the outer shell elements relative to the inner elements can take place.
  • the connecting element can be made from the known metallic materials or from plastic.
  • the connecting element has a round outer cross section. This results in uniform mechanical properties of the connecting element, regardless of the rotational orientation of the connecting element.
  • the connecting element has a polygonal outer cross section.
  • a connecting element with a polygonal cross section allows a defined orientation of the connecting element in connection with pedicle screws, the rod receptacle of which is also polygonal.
  • the mechanical properties, e.g. the stiffness can be predefined differently depending on the direction of loading, which is advantageous.
  • the slots can have a maximum width of 1.0 mm, preferably a maximum of 0.6 mm.
  • the connecting element (1) has a uniform mechanical strength and rigidity over its entire length.
  • the uniform rigidity of the connecting element over its entire length leads to a distribution of the applied bending moment over the entire length of the connecting element and thereby prevents stress concentrations at the transitions.
  • the slots can - at least partially - be filled with a softer material than the connecting element, preferably with PEEK, which prevents the undesired ingrowth of tissues.
  • the slots are arranged offset, as seen radially to the longitudinal axis. This enables uniform bending rigidity and elasticity in different directions.
  • a plurality of slots — viewed axially — are arranged one behind the other, so that there are a plurality of radially offset groups of such slots arranged axially one behind the other.
  • the subdivision of the slots into several slots, seen in the axial direction arranged one behind the other is particularly suitable for long connecting elements. The torsional stiffness and the bending stiffness can thereby be increased and / or adjusted.
  • the individual slots of a group appear axially offset from the slots of the radially adjacent groups. This gives the advantage of uniform mechanical strength and rigidity.
  • the connecting element additionally has a central rod inserted into the cavity.
  • the central rod can be made of metal, preferably titanium, a titanium alloy or steel.
  • FIG. 1 shows a perspective view of a connecting element according to the invention
  • FIG. 2 shows a side view of the connecting element according to FIG. 1;
  • Fig. 3 is a front view of the connecting element according to Fig. 1;
  • FIG. 4 shows a side view of a modified connecting element with a slot closed on both sides
  • FIG. 5 shows a side view of a modified connecting element with a slot open on one side
  • FIG. 6 shows a side view of a modified connecting element with two slots which are open on one side and separated by a bridge; 7 shows a side view of a modified connecting element with two closed slots separated by a bridge;
  • FIG. 8 shows a side view of a modified connecting element with a plurality of closed slots which are arranged offset from one another;
  • FIG. 9 is a side view of a modified connecting element with a plurality of closed slots arranged one behind the other;
  • FIG. 10 shows a cross section orthogonal to the longitudinal axis of a hollow connecting element with a slot
  • FIG. 11 shows a cross section orthogonal to the longitudinal axis of a hollow connecting element with two diametrically opposite slots
  • FIG. 13 shows a cross section orthogonal to the longitudinal axis of a hollow connecting element with three uniformly arranged slots
  • FIG. 16 shows a cross section orthogonal to the longitudinal axis of a connecting element which is not drilled longitudinally, with two longitudinal slots;
  • 17 shows a cross section orthogonal to the longitudinal axis of a connecting element which is not drilled longitudinally, with four longitudinal slots; 18 shows a longitudinal section through a modified connecting element with a central rod inserted therein
  • FIG. 19 shows an enlarged detail of a variant of the connecting element according to FIG. 18, which has an internal thread on one side;
  • FIG. 20 shows the enlarged section of the variant according to FIG. 19 with a central rod screwed into the internal thread.
  • FIG. 21 shows a cross section orthogonal to the longitudinal axis of a connecting element according to the invention with four slots, in the unclamped state
  • FIG. 22 shows the cross section according to FIG. 21 in the clamped state, the clamping of the individual tube segments of the connecting element being indicated by arrows;
  • FIG. 23 shows a cross section orthogonal to the longitudinal axis of a connecting element according to the invention with four slots and a central rod inserted therein, in the unclamped state;
  • FIG. 24 shows the cross section according to FIG. 23 in the clamped state, the clamping of the individual tube segments and the central rod being indicated by arrows;
  • FIG. 25 shows a schematic longitudinal section through a pedicle screw, in the receiving head of which the connecting element with central rod according to FIG. 24 is inserted in the unclamped state;
  • FIG. 26 shows the longitudinal section according to FIG. 25 in the clamped state
  • FIG. 27 shows a schematic illustration of a spinal column section with four implant anchoring elements inserted into adjacent vertebral bodies with a guide instrument for the connecting element according to the invention
  • 28 shows the representation according to FIG. 27 with the guide instrument positioned in the vicinity of the first implant anchoring element with the connecting element guided therein;
  • FIG. 29 shows the representation according to FIG. 27 with the connecting element inserted into the first implant anchoring element
  • FIG. 30 shows the representation according to FIG. 27 with a manipulator placed on the second implant anchoring element
  • FIG. 31 shows the illustration according to FIG. 27 with the connecting element inserted into the first and second implant anchoring elements
  • FIG. 32 shows the illustration according to FIG. 27 with the connecting element inserted into all four implant anchoring elements and a manipulator for aligning the individual implant anchoring elements;
  • FIG. 33 shows the representation according to FIG. 32 with a schematic representation of the mode of operation of the manipulator.
  • FIG. 34 shows the illustration according to FIG. 27 with the connecting elements inserted into all four implant anchoring elements and clamped therein.
  • the jacket 4 comprises radially penetrating longitudinal slots 5.
  • the longitudinal slots 5 run parallel to the longitudinal axis 2 and are closed at the two ends 6; 7 of the connecting element 1.
  • FIG. 4 shows a connecting element 1 with a longitudinal slot 5 which is axially closed at the rear and at the front end 6; 7; b)
  • FIG. 5 shows a connecting element 1 with a longitudinal slot 5, which is open at the rear end 6 and closed at the front end 7; 6) the connecting element 1 comprises two longitudinal slots 5a; 5b arranged axially one behind the other, which are axially separated from one another, one longitudinal slot 5a; 5b each being open at one end 6; 7; d) in FIG.
  • the connecting element 1 likewise comprises two longitudinal slots 5a; 5b arranged axially one behind the other, which are axially separated from one another, each longitudinal slot 5a; 5b being axially outwardly closed at the corresponding end 6; 7 of the connecting element 1; e) in FIG. 8, the connecting element 1 comprises four longitudinal slots 5a; 5b; 5c; 5d, which are arranged axially and offset from one another on the circumference.
  • the longitudinal slots 5a; 5b; 5c; 5d overlap axially at their ends.
  • the two axially external longitudinal slots 5a, 5d at the relevant end 6, 7 of the connecting element 1 are closed; and f) in FIG.
  • the connecting element 1 likewise comprises four longitudinal slots 5a; 5b; 5c; 5d, which here are axially separated from one another and lie in the same diametrical plane.
  • the axially external longitudinal slots 5a; 5d are closed at the corresponding end 6; 7 of the connecting element 1.
  • FIGS. 10 to 14 Still further embodiments of the connecting element 1 are shown in FIGS. 10 to 14.
  • the connecting element 1 can comprise one or more longitudinal slots 5 according to one of the embodiments shown in FIGS. 4 to 9. From the cross sections illustrated in FIGS. 10 to 14 and orthogonal to the longitudinal axis 2 (FIG. 4) it can be seen that the connecting element 1:
  • FIG. 10 comprises one or more longitudinal slots 5 according to FIG. 10, which penetrates the jacket 4 radially from the cavity 3 to the outer surface; h) according to FIG. 11 comprises at least two diametrically opposed longitudinal slots 5a; 5b penetrating radially from the cavity 3 to the outer surface; i) according to FIG. 12 comprises at least four pairs of diametrically opposed longitudinal slots 5a; 5b; 5c; 5d penetrating radially from the cavity 3 to the outer surface; 13) comprises at least three longitudinal slots 5a; 5b; 5c which are evenly distributed over the circumference and penetrate the jacket 4 radially from the cavity 3 to the outer surface; and k) according to FIG. 14 comprises at least four longitudinal slots 5a; 5b; 5c which are evenly distributed over the circumference and diametrically penetrating the connecting element 1.
  • the connecting element 1 can comprise one or more longitudinal slots 5 analogous to one of the embodiments shown in FIGS. 4 to 9. From the cross sections shown in FIGS. 15 to 17, which are orthogonal to the longitudinal axis 2 (FIG. 4), it can be seen that the connecting element 1
  • I) according to FIG. 15 comprises at least one longitudinal slot 5 penetrating the connecting element 1 diametrically; 16) comprises at least two longitudinal slots 5a; 5b which are perpendicular to one another and penetrate the connecting element 1 diametrically; and n) according to FIG. 17 comprises at least four longitudinal slots 5a; 5b; 5c; 5d, which are evenly distributed over the circumference and penetrate the connecting element 1 diametrically.
  • FIG. 18 shows an embodiment of the connecting element 1, the connecting element 1 having a cavity 3 and a central rod 8 inserted into this cavity 3.
  • the central rod 8 is of circular cylindrical design and is inserted into the cavity 3 without axial fixation.
  • FIG. 20 shows another embodiment of a connecting element 1, which also has a coaxial cavity 3, the cavity 3 being provided with an internal thread 9 at the front end 7 (FIG. 19).
  • a central rod 8 having a complementary external thread 11 is in this internal thread 9 screwable and thus axially fixable, so that an unwanted sliding out of the central rod 8 from the connecting element 1 is prevented.
  • FIG. 21 and 22 show an embodiment of the connecting element 1 with four longitudinal slots 5 and a cavity 3 coaxial with the longitudinal axis 2 (FIG. 1), the connecting element 1 in FIG. 21 in the unclamped state and in FIG. 22 in the clamped state State is shown.
  • the clamping forces acting on the connecting element 1 - represented by arrows - cause the individual tube segments of the connecting element 1 to be pressed together radially until the longitudinal slots 5 are closed and the tube segments are pressed against one another at their side walls delimiting the longitudinal slots 5.
  • the compressive forces on the side walls of the longitudinal slots 5 are also represented by arrows.
  • FIGS. 23 and 24 show an embodiment of the connecting element 1 with four longitudinal slots 5 and a central rod 8 inserted into the cavity 3, the connecting element 1 being shown in the unclamped state in FIG. 23 and in the clamped state in FIG. 24 ,
  • the forces acting radially on the connecting element 1 - represented by arrows - cause the individual tube segments to be pressed radially only until the wall of the cavity 3 rests on the surface of the central rod 8, so that the tube segments are pressed against the central rod and the longitudinal slots 5 not to be pressed together.
  • 25 and 26 show an embodiment of the connecting element 1 according to FIG. 12 together with a pedicle screw 12.
  • the connecting element 1 is inserted into a channel 15 which penetrates the receiving head 13 of the pedicle screw 12 transversely to its central axis 14.
  • 25 shows the clamping screw 16, which can be screwed into the receiving head 13 parallel to the central axis 14 in the released state, so that the connecting element 1 can be displaced parallel to its longitudinal axis 2.
  • the clamping screw 16 is tightened and the connecting element 1 is clamped in the receiving head 13 of the pedicle screw 12.
  • the arrows represent the forces acting on the connecting element 1 during the tightening of the clamping screw 16.
  • the surgical technique for the connecting element 1 according to the invention is briefly described below:
  • the connecting element 1 with longitudinal slits 5 allows a mihimally invasive surgical technique for the posterior spine supply.
  • the aim of this minimally invasive surgical technique is to secure the implant anchoring elements 20 such as screws, hooks, jaws, etc. as well as to implant the side member with minimal access.
  • the flexibility of the side member enables it to be implanted using a curved implantation aid, e.g. a curved pipe.
  • the surgical access is thus reduced to the dimensions of the tube.
  • the implant anchoring elements 20, which are elongated via manipulators, serve to manipulate the individual vertebral bodies during the insertion of the slotted connecting element 1, such as the correction of the spine with the connecting element 1 lying down. After the desired correction has been achieved, the connecting element 1 is fixed in the individual implant anchoring elements 20, as a result of which a stiffening of the slotted connecting element 1 is achieved and sufficient rigidity of the fracture treatment is achieved.

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)
  • Prostheses (AREA)
  • Surgical Instruments (AREA)

Abstract

L'élément de jonction (1) a la forme d'une barre présentant un axe longitudinal (2), une extrémité arrière (6) et une extrémité avant (7) et sert au pontage de plusieurs éléments d'ancrage osseux (12) implantés dans des os. L'élément de jonction (1) présente au moins une rainure longitudinale (5). Il présente ainsi pendant l'implantation une plus grande élasticité, de sorte qu'il peut être déformé de façon réversible, mais devient toutefois rigide une fois fixé dans lesdits éléments d'ancrage (par exemple, vis pédiculaires).
EP04717003A 2004-03-04 2004-03-04 Barre de jonction pour element de jonction osseuse Withdrawn EP1720470A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2004/000129 WO2005084566A1 (fr) 2004-03-04 2004-03-04 Barre de jonction pour element de jonction osseuse

Publications (1)

Publication Number Publication Date
EP1720470A1 true EP1720470A1 (fr) 2006-11-15

Family

ID=34916963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04717003A Withdrawn EP1720470A1 (fr) 2004-03-04 2004-03-04 Barre de jonction pour element de jonction osseuse

Country Status (9)

Country Link
US (1) US8167909B2 (fr)
EP (1) EP1720470A1 (fr)
JP (1) JP4714733B2 (fr)
KR (1) KR101085728B1 (fr)
CN (1) CN100435747C (fr)
AU (1) AU2004316945A1 (fr)
BR (1) BRPI0418605A (fr)
CA (1) CA2558419A1 (fr)
WO (1) WO2005084566A1 (fr)

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BRPI0418605A (pt) 2007-05-02
KR101085728B1 (ko) 2011-11-21
US20070042633A1 (en) 2007-02-22
US8167909B2 (en) 2012-05-01
CA2558419A1 (fr) 2005-09-15
JP4714733B2 (ja) 2011-06-29
JP2007526043A (ja) 2007-09-13
WO2005084566A1 (fr) 2005-09-15
CN1925803A (zh) 2007-03-07
AU2004316945A1 (en) 2005-09-15
KR20070004682A (ko) 2007-01-09
CN100435747C (zh) 2008-11-26

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