DE19504867C1 - Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe - Google Patents
Platzhalter, insbesondere für einen Wirbel bzw. eine BandscheibeInfo
- Publication number
- DE19504867C1 DE19504867C1 DE19504867A DE19504867A DE19504867C1 DE 19504867 C1 DE19504867 C1 DE 19504867C1 DE 19504867 A DE19504867 A DE 19504867A DE 19504867 A DE19504867 A DE 19504867A DE 19504867 C1 DE19504867 C1 DE 19504867C1
- Authority
- DE
- Germany
- Prior art keywords
- placeholder
- edge
- jacket
- placeholder according
- plate
- 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.)
- Expired - Lifetime
Links
Classifications
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- 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
- A61F2/30721—Accessories
- A61F2/30744—End caps, e.g. for closing an endoprosthetic cavity
-
- 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
- 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
-
- 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
-
- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30112—Rounded shapes, e.g. with rounded corners
- A61F2002/30113—Rounded shapes, e.g. with rounded corners circular
- A61F2002/30115—Rounded shapes, e.g. with rounded corners circular circular-O-shaped
-
- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30112—Rounded shapes, e.g. with rounded corners
- A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
-
- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30112—Rounded shapes, e.g. with rounded corners
- A61F2002/30125—Rounded shapes, e.g. with rounded corners elliptical or oval
- A61F2002/30126—Rounded shapes, e.g. with rounded corners elliptical or oval oval-O-shaped
-
- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30138—Convex polygonal shapes
- A61F2002/30148—Convex polygonal shapes lozenge- or diamond-shaped
-
- 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
- A61F2002/30108—Shapes
- A61F2002/3011—Cross-sections or two-dimensional shapes
- A61F2002/30138—Convex polygonal shapes
- A61F2002/30158—Convex polygonal shapes trapezoidal
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/302—Three-dimensional shapes toroidal, e.g. rings
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
- A61F2002/30228—Cylinders of elliptical or oval basis
-
- 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
- A61F2002/30108—Shapes
- A61F2002/30199—Three-dimensional shapes
- A61F2002/30224—Three-dimensional shapes cylindrical
- A61F2002/3023—Three-dimensional shapes cylindrical wedge-shaped cylinders
-
- 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
- A61F2002/30108—Shapes
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- A61F2002/30224—Three-dimensional shapes cylindrical
- A61F2002/30235—Three-dimensional shapes cylindrical tubular, e.g. sleeves
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- 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
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- 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
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
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-
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- 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
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
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- 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
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
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- 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
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
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- 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
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
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- 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
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- A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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- 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
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- A61F2/30—Joints
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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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- A61F2002/30784—Plurality of holes
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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
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- A—HUMAN NECESSITIES
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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
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- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
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- A—HUMAN NECESSITIES
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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30907—Nets or sleeves applied to surface of prostheses or in cement
- A61F2002/30909—Nets
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- A—HUMAN NECESSITIES
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- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
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- A—HUMAN NECESSITIES
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- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
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- A—HUMAN NECESSITIES
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- A—HUMAN NECESSITIES
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- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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- A—HUMAN NECESSITIES
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- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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- A61F2230/0017—Angular shapes
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- A—HUMAN NECESSITIES
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- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0065—Three-dimensional shapes toroidal, e.g. ring-shaped, doughnut-shaped
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- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0063—Three-dimensional shapes
- A61F2230/0069—Three-dimensional shapes cylindrical
Description
Die Erfindung betrifft einen Platzhalter nach dem Oberbegriff
des Patentanspruches 1.
Ein solcher Platzhalter ist beispielsweise aus der
EP 0 268 115 B1 bekannt. Dieser weist auf seiner Innenseite in
einem Abstand von dem jeweiligen freien Ende des Mantels einen
durch einen Ring gebildeten Anschlag auf. Der Ring ist mittels
Schrauben mit dem Mantel verbunden. In einer besonderen Ausfüh
rungsform ist auf dem Ring eine Durchbrechungen aufweisende Bo
denplatte aufgebracht.
Aufgabe der Erfindung ist es, den Platzhalter einfacher und
gleichzeitig universeller auszugestalten.
Diese Aufgabe wird durch den in Patentanspruch 1 gekennzeichne
ten Platzhalter gelöst.
Ausführungsformen der Erfindung sind in den Unteransprüchen ge
kennzeichnet.
Weitere Einzelheiten und Zweckmäßigkeiten der Erfindung ergeben sich
aus der Beschreibung von Ausführungsbeispielen anhand der
Figuren. Von den Figuren zeigen:
Fig. 1 eine Seitenansicht des Mantels des Platzhalters;
Fig. 2 eine Draufsicht auf eine erste Ausführungsform des mit
dem Mantel zu verbindenden Elementes;
Fig. 3 eine Draufsicht auf eine zweite Ausführungsform des
Elementes;
Fig. 3a einen Schnitt entlang der Linie III-III in Fig. 3;
Fig. 4 eine Draufsicht auf eine dritte Ausführungsform des
Elementes;
Fig. 5 eine Schnittdarstellung einer Seitenansicht entlang der
Linie V-V in Fig. 4;
Fig. 6 eine Schnittdarstellung entlang der Linie VI-VI in Fig. 7
durch eine weitere abgewandelte Ausführungsform;
Fig. 7 eine Draufsicht auf diese Ausführungsform;
Fig. 8 eine Schnittdarstellung entlang der Linie VIII-VIII in
Fig. 9;
Fig. 9 eine Draufsicht auf diese weitere Ausbildungsform;
Fig. 10 eine Schnittdarstellung entlang der Linie VIII-VIII in
Fig. 11; und
Fig. 11 eine Draufsicht auf diese weitere Ausbildungsform.
Wie insbesondere aus Fig. 1 ersichtlich ist, weist der Platzhal
ter einen geschlossenen Mantel 1 auf. Der sich senkrecht zur
Längsachse 2 des Mantels 1 erstreckende Querschnitt ist in
bekannter Weise insbesondere zylindrisch oder oval oder nieren
förmig ausgebildet. Der Mantel 1 weist in der aus Fig. 1
ersichtlichen Weise sich mit ihrer Längsdiagonale parallel zur
Mantelachse 2 erstreckende rautenförmige Ausnehmungen 3, 4 auf.
Jeweils benachbarte Reihen 3, 4 solcher Rauten sind gegeneinan
der um eine halbe Rautenhöhe versetzt. Dadurch wird ein Netz von
sich unter einem spitzen Winkel schneidenden Bandstreifen 5, 6
gebildet, die unter jeweils gleich großen Winkeln gegen die
Längsdiagonale der Rauten 3, 4 geneigt sind. Der obere Rand 7 und
der untere Rand 8 erstrecken sich jeweils in einer Ebene senk
recht zu der Längsachse 2. Die Größe der Rauten 3, 4 und der
diese begrenzende Bandstreifen 5, 6 ist so gewählt, daß die
Anzahl von Rauten in Umfangsrichtung stets ganzzahlig ist. Durch
das Bilden der Ränder 7, 8 ergibt sich in Umfangsrichtung stets
eine gerade Anzahl von durch den jeweiligen Rautengrund gebilde
ten V-förmigen Vertiefungen 9, 10 bzw. 9′, 10′. Aufgrund der wie
oben beschrieben gewählten Geometrie weist der jeweilige Rand
quasi eine zu einem Punkt auf der Längsachse 2, der in der Ebene
des Randes liegt, bestehende Punktsymmetrie auf.
Das in Fig. 2 gezeigte erste Ausführungsbeispiel eines einen
Anschlag bildenden Elementes 11 ist als ein plattenförmiger Ring
ausgebildet. Der Ring 12 entspricht in seiner Außenkontur der
Innenkontur des Mantels 1. Seine Abmessungen sind so gewählt,
daß er sich in das Innere des Mantels hineindrücken,
gewünschtenfalls aber auch wieder herausdrücken läßt, also durch
Reibsitz mit dem Mantel 1 verbunden ist. An dem Außenrand des
Ringes 12 sind in Umfangsrichtung äquidistant verteilt
hervorspringende Stege 15 vorgesehen. Der Abstand zweier Stege
in Umfangsrichtung ist gleich dem Abstand zweier in
Umfangsrichtung aufeinander folgender V-förmiger Vertiefungen 9,
10. Die Querabmessungen der Stege 15 in der Plattenebene sind so
bemessen, daß die Stege gut in den Grund der V-förmigen
Ausnehmungen 9, 10 hineinpassen. Die Länge der hervorstehenden
Stege entspricht in etwa der Wanddicke des zugehörigen Mantels.
Im Fall der Anwendung wird der Mantel 1 durch Abtrennen des obe
ren Randes 7 und des unteren Randes 8 auf die gewünschte Länge
gebracht. Dann wird ein Ring 12 auf der Oberseite und ein zwei
ter Ring auf der unteren Seite so in das Mantelinnere gedrückt,
daß der jeweilige Ring mit seinen Stegen 15 in den jeweiligen
Grund der zugehörigen V-förmigen Vertiefung 9, 10 bzw. 9′, 10′
liegt.
Aufgrund der Tatsache der ganzzahligen Anzahl der V-förmigen
Vertiefungen und der sich daraus ergebenden Punktsymmetrie kann
ein und dasselbe Element 11 verwendet werden, unabhängig davon,
ob die Abtrennung an dem Rand 7 oder an dem gestrichelt angedeu
teten darunterliegenden Rand 7′ erfolgt. Wird der Rand nicht an
der Stelle 7 sondern an der Stelle 7′ gebildet, wird der Ring 12
einfach um seine Längsachse gedreht eingesetzt, so daß die La
gerhaltung vereinfacht wird und andererseits auch die Handhabung
mehr einfach ist, weil nur eine Art von Ringen zum Einsatz
kommt.
Fig. 3 zeigt ein Element 13 einer abgewandelten Ausführungsform.
Auch hier handelt es sich um eine Platte, bei der die Ausnehmun
gen durch in der Platte verteilte lochförmige Ausnehmungen 14
gebildet sind. In allen übrigen Merkmalen stimmt das Element mit
dem Element 11 überein.
Die Fig. 4 und 5 zeigen ein Element 16 einer dritten Ausfüh
rungsform. Dieses Element weist zunächst wiederum eine Platte
auf, die mit der in Fig. 3 gezeigten Ausführungsform bezüglich
ihrer Ausnehmungen 14 und ihrer Stege 15 identisch ist. Um die
Platte herum ist ein Außenring 17 angeordnet. Dieser erstreckt
sich in der am besten aus Fig. 5 ersichtlichen Weise mit seiner
Ringwandung senkrecht zur Plattenebene und damit parallel zur
äußeren Oberfläche des Mantels 1. Die Länge der Stege 15 ist so
gewählt, daß diese gerade um so viel länger als die Dicke des
Mantels 1 ist, daß der dadurch zwischen Platte, Stegen und Ring
gebildete Zwischenraum 18 ein Aufschieben des Elementes auf das
jeweilige freie Ende 7, 8 des Mantels 1 dahingehend, daß die
Stege 15 in dem Grund der jeweiligen zugehörigen V-förmigen Aus
nehmungen 9, 10, 9′, 10′ liegen, ermöglicht. Der Ring 17 liegt
dann mit seiner inneren Oberfläche an der Außenwand des Mantels
1 an.
In den Fig. 6 und 7 ist ein Element 19 einer weiteren Ausfüh
rungsform beschrieben. Diese weist einen plattenförmigen Ring
12 auf, der mit dem in Fig. 2 gezeigten Ring identisch ist. Auf
einer Oberfläche dieses Ringes ist, wie am besten aus Fig. 6
ersichtlich ist, ein in seiner Außenkontur der Innenkontur des
Mantels 1 entsprechender Randabschnitt 20 vorgesehen, dessen der
Platte 12 abgewandter freier Rand in Umfangsrichtung äquidistant
angeordnete Zacken 21 aufweist. Die Höhe der Zacken 21 über der
Platte 12 ist so bemessen, daß die Zacken im eingesetzten
Zustand nahezu bis zu ihrem Grund über den Rand 7 bzw. 8 des
Mantels 1 hervorstehen.
Die in den Fig. 8 und 9 gezeigte Ausführungsform eines Ele
mentes 22 unterscheidet sich von der vorher beschriebenen Aus
führungsform nur dadurch, daß der Zackengrund nicht auf einer
Ebene parallel zur Platte 12 sondern in einer Ebene, die geneigt
zur Platte 12 ist, liegt. Der von den Zacken gebildete Rand
liegt ebenfalls in einer Ebene, die zu der Plattenebene des Rin
ges 12 geneigt ist. Die Neigung beträgt vorzugsweise 8 bis 10°.
Die in den Fig. 10 und 11 gezeigte Ausführungsform des
Elementes 24 unterscheidet sich von der in den Fig. 8 und 9
gezeigten Ausführungsform dadurch, daß der Randabschnitt 20
schräg zu der Plattenebene, d. h. in einem von 90° verschiedenen
Winkel zur Plattenebene des Ringes 12, ausgebildet ist.
Im Betrieb werden beide Ausführungsformen, also die Elemente 19
bzw. 22 wie bei den vorher beschriebenen Ausführungsformen in
den Mantel eingesetzt, so daß der Ring 12 mit seinen hervorste
henden Stegen 15 in den tiefsten Ausnehmungen der V-förmigen
Vertiefungen 9, 10 ruht und die Zacken über den Mantelrand nach
außen hervorstehen. Die Zacken 21 bzw. 21′ können bei der in
Fig. 6 und 7 gezeigten Ausführungsform unterschiedlich lang
abgeschnitten werden, beispielsweise entlang der gestrichelten
Linie 23, so daß ein keilförmiger Einsatz entsteht. In gleicher
Weise kann auch der Rand des Elementes 22 so beschnitten werden,
daß der vorgegebene Winkel zwischen dem äußeren Rand und dem
plattenförmigen Ring 12 verändert wird. Auf diese Weise ist es
möglich, mit wenigen Grundelementen Platzhalter mit verschie
denen Keilwinkeln zu bilden.
Die Außenkontur der jeweiligen Ringe 12 bzw. 13 wird natürlich
in Abhängigkeit von der jeweiligen Innenkontur des zugehörigen
Mantels bestimmt.
In Abweichung von den oben beschriebenen besonders bevorzugten
Ausführungsbeispielen können anstelle der V-Form die Vertiefun
gen des Randes auch andere Formen haben, etwa U-förmige oder
schlitzförmige Vertiefungen.
Claims (15)
1. Platzhalter, insbesondere für einen Wirbel bzw. eine Band
scheibe, mit einem Ausnehmungen aufweisenden Mantel (1) mit
einem ersten und zweiten Rand (7, 8) und in Umfangsrichtung an
geordneten und zueinander benachbarten sich jeweils in Richtung
des anderen Randes erstreckenden Vertiefungen (9, 10; 9′, 10′)
und einem an wenigstens einem der Enden in einem Abstand von dem
äußeren Rand vorgesehenen Anschlag,
dadurch gekennzeichnet, daß
der Anschlag durch ein Element (11, 13, 16, 19, 22) gebildet
ist, dessen äußere Kontur der inneren Kontur des Mantels (1)
entspricht und an dessen Umfang an den den Vertiefungen (9, 10;
9′, 10′) entsprechenden Stellen stegartige Vorsprünge (15) zum
Eingreifen in die Vertiefungen vorgesehen sind.
2. Platzhalter nach Anspruch 1, dadurch gekennzeichnet, daß
die Vertiefungen als zueinander jeweils einen gleichen Abstand
aufweisende V-förmige Ausnehmungen (9, 10; 9′, 10′) ausgebildet
sind.
3. Platzhalter nach Anspruch 1 oder 2, dadurch gekennzeichnet,
daß
die Abmessung des äußeren Umfanges so bemessen ist, daß das
Element (11, 13, 16, 19, 22) mit Reibsitz von dem Mantel (1)
gehalten ist.
4. Platzhalter nach einem der Ansprüche 1 bis 3, dadurch
gekennzeichnet, daß
der Mantel (1) aus einem Gitter mit rautenförmigen Ausnehmungen
(3, 4) gebildet ist.
5. Platzhalter nach Anspruch 4, dadurch gekennzeichnet, daß
eine Diagonale der Rauten (3, 4) sich jeweils parallel zur
Längsachse (2) des Platzhalters erstreckt.
6. Platzhalter nach einem der Ansprüche 1 bis 5, dadurch
gekennzeichnet, daß
das Element (11, 13, 16) als Platte ausgebildet ist.
7. Platzhalter nach Anspruch 6, dadurch gekennzeichnet, daß
die Platte (12) ringförmig ausgebildet ist.
8. Platzhalter nach Anspruch 6, dadurch gekennzeichnet, daß
die Platte (13) mehrere einander benachbarte Löcher (14) auf
weist.
9. Platzhalter nach einem der Ansprüche 6 bis 8, dadurch
gekennzeichnet, daß
die Länge der Stege (15) wenigstens gleich der Wandstärke des
Mantels (1) ist.
10. Platzhalter nach Anspruch 9, dadurch gekennzeichnet, daß
an den äußeren Enden der Stege (15) ein sich um das Element (13)
herum erstreckender Außenring (17) vorgesehen ist, dessen Kontur
der Außenkontur des Mantels (1) entspricht.
11. Platzhalter nach Anspruch 10, dadurch gekennzeichnet, daß
der Außenring (17) mit den Stegen (15) entlang seiner Mittel
linie verbunden ist.
12. Platzhalter nach einem der Ansprüche 1 bis 11, dadurch
gekennzeichnet, daß
auf der dem angrenzenden Ende zugewandten Seite des Elementes
(19, 22) ein über den freien Rand des Mantels (1)
hervorstehender zackenförmiger Rand (21, 21′) vorgesehen ist.
13. Platzhalter nach Anspruch 12, dadurch gekennzeichnet, daß
der zackenförmige Rand sich parallel zu der Platte (12) er
streckt.
14. Platzhalter nach Anspruch 12, dadurch gekennzeichnet, daß
der zackenförmige Rand sich schräg zu der Platte (12) erstreckt.
15. Platzhalter nach einem der Ansprüche 1 bis 14, dadurch
gekennzeichnet, daß
der Rand einer gerade Anzahl äquidistanter Vertiefungen auf
weist.
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19504867A DE19504867C1 (de) | 1995-02-14 | 1995-02-14 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
AT95120302T ATE171857T1 (de) | 1995-02-14 | 1995-12-21 | Platzhalter, insbesondere für einen wirbel bzw. eine bandscheibe |
EP95120302A EP0727196B1 (de) | 1995-02-14 | 1995-12-21 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
DE59503854T DE59503854D1 (de) | 1995-02-14 | 1995-12-21 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
ES95120302T ES2124489T3 (es) | 1995-02-14 | 1995-12-21 | Dispositivo de sujecion, especialmente para vertebra o disco. |
US08/581,149 US5702451A (en) | 1995-02-14 | 1995-12-29 | Space holder, in particular for a vertebra or an intervertebral disk |
CA002169233A CA2169233A1 (en) | 1995-02-14 | 1996-02-09 | Space holder, in particular for a vertebra or an intervertebral disk |
JP08023671A JP3089201B2 (ja) | 1995-02-14 | 1996-02-09 | スペースホルダ |
KR1019960003409A KR100395192B1 (ko) | 1995-02-14 | 1996-02-13 | 척추또는추간판용스페이스홀더 |
US08/936,403 US5972031A (en) | 1995-02-14 | 1997-09-25 | Space holder in particular for a vertebra or an intervertebral disk |
US09/386,885 US20010014826A1 (en) | 1995-02-14 | 1999-08-31 | Space holder, in particular for a vertebra or an intervertebral disk |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE19504867A DE19504867C1 (de) | 1995-02-14 | 1995-02-14 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
Publications (1)
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DE19504867C1 true DE19504867C1 (de) | 1996-02-29 |
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Application Number | Title | Priority Date | Filing Date |
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DE19504867A Expired - Lifetime DE19504867C1 (de) | 1995-02-14 | 1995-02-14 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
DE59503854T Expired - Lifetime DE59503854D1 (de) | 1995-02-14 | 1995-12-21 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
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Application Number | Title | Priority Date | Filing Date |
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DE59503854T Expired - Lifetime DE59503854D1 (de) | 1995-02-14 | 1995-12-21 | Platzhalter, insbesondere für einen Wirbel bzw. eine Bandscheibe |
Country Status (8)
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US (3) | US5702451A (de) |
EP (1) | EP0727196B1 (de) |
JP (1) | JP3089201B2 (de) |
KR (1) | KR100395192B1 (de) |
AT (1) | ATE171857T1 (de) |
CA (1) | CA2169233A1 (de) |
DE (2) | DE19504867C1 (de) |
ES (1) | ES2124489T3 (de) |
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DE29616778U1 (de) * | 1996-09-26 | 1998-01-29 | Howmedica Gmbh | Wirbelkörperplatzhalter |
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DE19957339A1 (de) * | 1999-11-29 | 2001-06-13 | Franz Copf | Cageelement, sowie Satz von Cageelementen |
DE19957339C2 (de) * | 1999-11-29 | 2002-03-28 | Franz Copf | Cageelement, sowie Satz von Cageelementen |
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US8771357B2 (en) | 2004-05-04 | 2014-07-08 | Biedermann Technologies Gmbh & Co. Kg | Flexible space holder |
DE102004021861A1 (de) * | 2004-05-04 | 2005-11-24 | Biedermann Motech Gmbh | Flexibler Platzhalter |
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Also Published As
Publication number | Publication date |
---|---|
EP0727196B1 (de) | 1998-10-07 |
KR960030900A (ko) | 1996-09-17 |
CA2169233A1 (en) | 1996-08-15 |
ES2124489T3 (es) | 1999-02-01 |
EP0727196A1 (de) | 1996-08-21 |
DE59503854D1 (de) | 1998-11-12 |
US5972031A (en) | 1999-10-26 |
US5702451A (en) | 1997-12-30 |
JPH08238266A (ja) | 1996-09-17 |
US20010014826A1 (en) | 2001-08-16 |
KR100395192B1 (ko) | 2004-01-07 |
ATE171857T1 (de) | 1998-10-15 |
JP3089201B2 (ja) | 2000-09-18 |
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