CA2554923A1 - Intervertebral disc prosthesis - Google Patents
Intervertebral disc prosthesis Download PDFInfo
- Publication number
- CA2554923A1 CA2554923A1 CA002554923A CA2554923A CA2554923A1 CA 2554923 A1 CA2554923 A1 CA 2554923A1 CA 002554923 A CA002554923 A CA 002554923A CA 2554923 A CA2554923 A CA 2554923A CA 2554923 A1 CA2554923 A1 CA 2554923A1
- Authority
- CA
- Canada
- Prior art keywords
- core
- plate
- prosthesis
- intervertebral disc
- disc prosthesis
- 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.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3468—Trocars; Puncturing needles for implanting or removing devices, e.g. prostheses, implants, seeds, wires
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/34—Trocars; Puncturing needles
- A61B17/3472—Trocars; Puncturing needles for bones, e.g. intraosseus injections
-
- 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
- A61F2/0095—Packages or dispensers for prostheses or other implants
-
- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30365—Rotation about the common longitudinal axis with additional means for limiting said rotation
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- 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
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30369—Limited lateral translation of the protrusion within a larger recess
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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
- 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
- A61F2002/30387—Dovetail connection
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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
- 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
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
-
- 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
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30565—Special structural features of bone or joint prostheses not otherwise provided for having spring elements
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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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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- 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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- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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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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- 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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- A61F2/00—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
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- 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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- 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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- 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2002/30934—Special articulating surfaces
- A61F2002/30937—Special articulating surfaces with cut-outs
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
- A61F2/442—Intervertebral or spinal discs, e.g. resilient
- A61F2/4425—Intervertebral or spinal discs, e.g. resilient made of articulated components
- A61F2002/443—Intervertebral or spinal discs, e.g. resilient made of articulated components having two transversal endplates and at least one intermediate component
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4622—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof having the shape of a forceps or a clamp
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2002/4625—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use
- A61F2002/4627—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof with relative movement between parts of the instrument during use with linear motion along or rotating motion about the instrument axis or the implantation direction, e.g. telescopic, along a guiding rod, screwing inside the instrument
-
- 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
- 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
-
- 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
- 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
Abstract
The present invention relates to an intervertebral disc prosthesis comprisin g at least three pieces including an upper plate (1), a lower plate (2) and a mobile core (3) at least relative to the lower plate, the upper surface of t he core being in contact with at least a part of the lower surface of the upper plate, cooperation means (22, 31) limiting or preventing the movements of th e core relative to the lower plate, in translation and in rotation, respectively, along an axis substantially parallel to the lower plate and about an axis substantially perpendicular to the lower plate , characterised in that at least the lower surface of the core has at least one hole (41) facilitating sliding of the core relative to the upper surface of the lower plate with which it is in contact.
Claims (32)
1. An intervertebral disc prosthesis comprising at least three pieces including a first plate (1), a second plate (2) and a core mobile (3) at least relative to one of the plates (1, 2), the core (3) having a curved surface in contact with at least a part of a complementary curved surface of the first plate (1)and a substantially flat surface in contact with at least a part of a substantially flat surface of the second (2) , cooperation means (22, 31) situated near the periphery of the second plate (2) and of the core (3) allowing to limit or prevent, without excessive friction, the movements in translation of the core relative to the second plate , along an axis substantially parallel to the substantially flat surfaces, and allowing to limit or prevent the movements in rotation of the core relative to the second plate , about an axis substantially perpendicular to the substantially flat surfaces, characterised in that at least the substantially flat surface of the core (3) has at least one dummy hole (41) facilitating sliding of the core (3) relative to the substantially flat surface of the second plate (2) with which it is in contact.
2. The intervertebral disc prosthesis as claimed in Claim 1, characterised in that at least the substantially flat surfaces are the lower surface of the core (3) and the upper surface of the second plate (2), known as lower plate.
3. The intervertebral disc prosthesis as claimed in any one of Claims 1 and 2, characterised in that at least the substantially flat surface of the core (3) is enclosed in a protective shell (4), whereof the surface in contact with the substantially flat surface of the second plate (2) and with the substantially flat of the core (3) has at least one hole (41).
4. The intervertebral disc prosthesis as claimed in Claim 3, characterised in that the protective shell (4) of the core does not cover the cooperation means (31) of the core, so as to avoid contact of the protective shell (4) with the cooperation means (22) of the second plate (2).
5. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 4, characterised in that the area of contact of the substantially flat surface of the core (3) or of the protective shell (4) with the substantially flat surface of the second plate (2) and the area of contact of the curved surface of the core (3) with the curved surfaces of the first plate (1) are substantially equal, on both sides of the core (3).
6. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 5, characterised in that the angle formed by the edges (411) of the hole (41) present at least on the substantially flat surface of the core (3) or of the protective shell (4) of the core (3) is softened to improve the sliding of the core (3) or of the shell (4) on the substantially flat surface of the second plate (2).
7. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 6, characterised in that the hole (41) present on the substantially flat surface of the core (3) or of the protective shell (4) of the core is prolonged, as far as the periphery of this substantially flat surface, by grooves (410) forming channels via which the interstitial liquid from surrounding tissue can play a lubricating role to improve the sliding of the core (3) on the substantially flat surface of the second plate (2), when the prosthesis is in place on the patient.
8. The intervertebral disc prosthesis as claimed in Claim 7, characterised in that the angle formed by the edges (411) of the grooves (410) prolonging the hole (41) as far as the periphery of the substantially flat surface of the core (3) or of the protective shell (4) of the core is softened to improve the sliding of the core (3) or of the shell (4) on the substantially flat surface of the second plate (2).
9. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 8, characterised in that the core (3) is made of polyethylene.
10. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 9, characterised in that the protective shell (4) of the core (3) is made of metal.
11. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 10, characterised in that the first (1) and second (2) plates are made of metal.
12. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 11, characterised in that the cooperation means consist in male means (22) of the second plate (2), cooperating with female means (31) of the core (3).
13. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 12, characterised in that the core (3) is mobile relative to the first (1) and/or second (2) plates and that a variable angle between the first (1) and second (2) plates depends on the position of the core (3), an inclination, in any direction at all, of at least the first plate (1) inducing the displacement of the core (3) between the plates (1, 2) and providing freedom of movement for the patient and, at the same time, helping eliminate the positioning defects of the prosthesis.
14. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 13, characterised in that an angle between the upper surface of the upper plate (1, 2) and the lower surface of the lower plate (2, 1) can be imposed either by the fact that the plane means representing the upper and lower surfaces of the core (3) form an angle, or by the fact that the plane means representing the upper and lower surfaces of the first plate (1) and/or of the second plate (2) form an angle, or by restriction of the movements of the core (3) about a position imposing inclination of at least the first plate (1).
15. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 14, characterised in that the same plates (1, 2) can be assembled with cores (3) of different thicknesses.
16.The intervertebral disc prosthesis as claimed in any one of Claims 1 to 15, characterised in that at least a part of the surface of the first plate (1) is concave and complementary to the surface of the core (3) with which it is in contact.
17. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 16, characterised in that the dimensions of each male means are slightly less than those of each female means so as to permit slight clearance between the core (3) and the second plate (2).
18. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 17, characterised in that the dimensions of each male means are substantially the same as those of each female means so as to prevent any clearance between the core (3) and the second plate (2).
19. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 18, characterised in that the male means (22) of the second plate (2) are two contact plates situated opposite one another on two edges of the prosthesis, and the female means (31) of the core (3) are two recesses.
20. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 18, characterised in that the male means (22) of the second plate (2) are two walls situated opposite one another in the vicinity of two edges of the prosthesis, and in that the female means (31) of the core (3) are recesses.
21. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 18, characterised in that the male means (22) of the lower plate (2) are two nibs curved towards the interior of the prosthesis and situated opposite one another on two edges of the prosthesis, and the female means (31) of the core (3) are two recesses.
22. The intervertebral disc prosthesis as claimed in Claim 21, characterised in that at least one of the nibs is replaced by a pin equipped with a hole and on which a plate is fixed by means of a dowel penetrating the hole.
23. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 22, characterised in that the lower surface of the lower plate (2, 1) and the upper surface of the upper plate (1, 2) are provided with teeth or notches (21, 11) situated in the vicinity of at least two edges of the prosthesis and oriented so as to prevent sliding of the prosthesis prior to its adhesion to the osseous tissue permitted by a porous biocompatible coating of the surfaces of the plates (1, 2) in contact with the vertebrae.
24. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 23, characterised in that at least the second plate (2) comprises one or more openings in the vicinity of its front side, provided to receive anchoring means of the prosthesis in a vertebra.
25. The intervertebral disc prosthesis as claimed in Claim 24, characterised in that the openings of the second plate (2) are circular, and in that the anchoring means have the form of a stud.
26. The intervertebral disc prosthesis as claimed in any one of Claims 24 and 25, characterised in that the head of the anchoring means have larger dimensions than the openings of the second plate (2), the anchoring means being fixed into a vertebra, the second plate (2) is sandwiched in between the head of the anchoring means and said vertebra.
27. The intervertebral disc prosthesis as claimed in any one of Claims 1 to 26, characterised in that the upper plate is bulged on at least a part of its upper surface to adapt to the form of the vertebrae.
28. An insertion device, between two vertebrae, of intervertebral disc prostheses constituted by a first plate (1), an second plate (2) and a mobile core (3) at least relative to the second plate (2), characterised in that it comprises a clip (7) whereof the front surface (71) has a form provided to fit the form of the front edge of the prosthesis and whereof at least two edges are equipped with gripping means (72) of the prosthesis.
29. The device as claimed in Claim 28, characterised in that the gripping means (72) present on at least two edges of the clip (7) are two flexible blades mounted on the lateral edges of the clip and holding the prosthesis by pinching the lateral edges of the upper (1) and lower (2) plates of the prosthesis.
30. The device as claimed in any one of Claims 28 and 29, characterised in that the front surface (71) of the clip (7) has a form provided to fit the form of the front edge of the prosthesis, on one hand, owing to its height at least substantially equal to the height of the prosthesis, so as to come into contact with the front edges of each of the plates of the prosthesis and, on the other hand, to at least one groove (711) in at least the median part of the front surface of the clip to likewise come in contact with the front edge of the core (3) which is slightly set back relative to the front edges of the plates.
31. The device as claimed in any one of Claims 28 to 30, characterised in that the rear surface of the clip (7) can be pushed by a first end of a rod (51), known as a guide (5), equipped with a pusher (52) at its other end and with a limit stop (53) at a variable position along the guide (5) for limiting the length of the sliding of the guide inside a body (61) of a charger (6) equipped with a head (62) in which is arranged a space dimensioned for receiving the prosthesis and the clip (7), the position of the limit stop (53) on the guide (5) being adjustable such that the prosthesis, held by the clip (7), exits from the head (62) of the charger (6) and is centred relative to the vertical axis of the two vertebrae between which it must be implanted when the limit stop (53) contacts the body (61) of the charger (6).
32. The device as claimed in any one of Claims 28 to 31, characterised in that the front end of the gripping means (72) of the prosthesis present on at least two edges of the clip (7) is larger than their back end at which the width of the clip (7) is substantially equal to the width of the space in the head (62) of the charger (6), such that, when the prosthesis and the clip (7) are in the head (62) of the charger (6), the prosthesis is held firmly by the gripping means (72) of the clip (7) which are then compressed between the prosthesis and the internal wall of the space arranged in the head (62) of the charger and, when the prosthesis exits from the head (62) of the charger, it is held less firmly by the clip (7), so as to be able to be released therefrom.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR04/01024 | 2004-02-04 | ||
FR0401024A FR2865629B1 (en) | 2004-02-04 | 2004-02-04 | INTERVERTEBRAL DISC PROSTHESIS |
FR0405899A FR2865630B1 (en) | 2004-02-04 | 2004-06-02 | INTERVERTEBRAL DISC PROSTHESIS |
PCT/IB2005/000280 WO2005074839A1 (en) | 2004-02-04 | 2005-02-04 | Intervertebral disc prosthesis |
Publications (2)
Publication Number | Publication Date |
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CA2554923A1 true CA2554923A1 (en) | 2005-08-18 |
CA2554923C CA2554923C (en) | 2011-12-06 |
Family
ID=37770364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA2554923A Active CA2554923C (en) | 2004-02-04 | 2005-02-04 | Intervertebral disc prosthesis |
Country Status (8)
Country | Link |
---|---|
US (1) | US8858635B2 (en) |
EP (1) | EP1711133B1 (en) |
CN (1) | CN1913846B (en) |
AU (1) | AU2005211222B2 (en) |
CA (1) | CA2554923C (en) |
FR (2) | FR2865629B1 (en) |
PL (1) | PL1711133T3 (en) |
WO (1) | WO2005074839A1 (en) |
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2004
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- 2004-06-02 FR FR0405899A patent/FR2865630B1/en not_active Expired - Fee Related
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- 2005-02-04 WO PCT/IB2005/000280 patent/WO2005074839A1/en active Application Filing
- 2005-02-04 CA CA2554923A patent/CA2554923C/en active Active
- 2005-02-04 CN CN2005800039443A patent/CN1913846B/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10603185B2 (en) | 2004-02-04 | 2020-03-31 | Ldr Medical | Intervertebral disc prosthesis |
US11872138B2 (en) | 2005-09-23 | 2024-01-16 | Ldr Medical | Intervertebral disc prosthesis |
Also Published As
Publication number | Publication date |
---|---|
US8858635B2 (en) | 2014-10-14 |
AU2005211222B2 (en) | 2011-09-01 |
CA2554923C (en) | 2011-12-06 |
CN1913846A (en) | 2007-02-14 |
FR2865629B1 (en) | 2007-01-26 |
EP1711133B1 (en) | 2011-05-04 |
US20050197706A1 (en) | 2005-09-08 |
EP1711133A1 (en) | 2006-10-18 |
FR2865630A1 (en) | 2005-08-05 |
AU2005211222A1 (en) | 2005-08-18 |
CN1913846B (en) | 2010-10-13 |
PL1711133T3 (en) | 2011-10-31 |
WO2005074839A1 (en) | 2005-08-18 |
FR2865629A1 (en) | 2005-08-05 |
FR2865630B1 (en) | 2007-08-03 |
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