EP1887986A2 - Verriegelte modulare bandscheibenkernprothese - Google Patents
Verriegelte modulare bandscheibenkernprotheseInfo
- Publication number
- EP1887986A2 EP1887986A2 EP06760355A EP06760355A EP1887986A2 EP 1887986 A2 EP1887986 A2 EP 1887986A2 EP 06760355 A EP06760355 A EP 06760355A EP 06760355 A EP06760355 A EP 06760355A EP 1887986 A2 EP1887986 A2 EP 1887986A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- modular
- segment
- modular segment
- 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.)
- Withdrawn
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
-
- 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
- A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
- A61F2/4603—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof
- A61F2/4611—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for insertion or extraction of endoprosthetic joints or of accessories thereof of spinal prostheses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/3094—Designing or manufacturing processes
-
- 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
- A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
- A61F2002/30014—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/30004—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis
- A61F2002/30016—Material related properties of the prosthesis or of a coating on the prosthesis the prosthesis being made from materials having different values of a given property at different locations within the same prosthesis differing in hardness, e.g. Vickers, Shore, Brinell
-
- 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
- A61F2002/30003—Material related properties of the prosthesis or of a coating on the prosthesis
- A61F2002/3006—Properties of materials and coating materials
- A61F2002/30075—Properties of materials and coating materials swellable, e.g. when wetted
-
- 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
- A61F2002/30159—Concave polygonal shapes
- A61F2002/30166—H-shaped or I-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
- A61F2002/30199—Three-dimensional shapes
- 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
- 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
-
- 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
-
- 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
- A61F2002/30462—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements retained or tied with a rope, string, thread, wire or cable
-
- 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
- A61F2002/30518—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts
- A61F2002/3052—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements with possibility of relative movement between the prosthetic parts unrestrained in only one direction, e.g. moving unidirectionally
-
- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30561—Special structural features of bone or joint prostheses not otherwise provided for breakable or frangible
-
- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30563—Special structural features of bone or joint prostheses not otherwise provided for having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
-
- 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
- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
-
- 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
- A61F2002/30535—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
-
- 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
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/30677—Means for introducing or releasing pharmaceutical products, e.g. antibiotics, into the body
-
- 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
- A61F2/3094—Designing or manufacturing processes
- A61F2002/30971—Laminates, i.e. layered products
-
- 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
- A61F2002/444—Intervertebral or spinal discs, e.g. resilient for replacing the nucleus pulposus
-
- 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
- A61F2210/00—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2210/0061—Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof swellable
-
- 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
- A61F2220/0075—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
-
- 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
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0028—Shapes in the form of latin or greek characters
-
- 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
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0018—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in elasticity, stiffness or compressibility
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0019—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in hardness, e.g. Vickers, Shore, Brinell
Definitions
- the present invention relates generally to an implantable prosthesis for repairing damaged intervertebral discs. More particularly, the present invention relates to an interlocked modular disc nucleus prosthesis of predetermined size and shape.
- the spinal motion segment consists of a unit of spinal anatomy bounded by two vertebral bodies, including the two vertebral bodies, the interposed intervertebral disc, as well as the attached ligaments, muscles, and the facet joints.
- the disc consists of the end plates at the top and bottom of the vertebral bones, the soft inner core, called the nucleus and the annulus fibrosis running circumferentially around the nucleus, hi normal discs, the nucleus cushions applied loads, thus protecting the other elements of the spinal motion segment.
- a normal disc responds to compression forces by bulging outward against the vertebral end plates and the annulus fibrosis.
- the annulus consists of collagen fibers and a smaller amount of elastic fibers, both of which are effective in resisting tension forces. However, the annulus on its own is not very effective in withstanding compression and shear forces.
- annulus and facet joints deteriorate, many other effects ensue, including the narrowing of the interspace, bony spur formation, fragmentation of the annulus, fracture and deterioration of the cartilaginous end plates, and deterioration of the cartilage of the facet joints.
- the annulus and facet joints lose their structural stability and subtle but pathologic motions occur between the spinal bones.
- Breakdown products of the disc including macroscopic debris, microscopic particles, and noxious biochemical substances build up. These breakdown products stimulate sensitive nerve endings in and around the disc, producing low back pain and sometimes, sciatica. Affected individuals experience muscle spasms, reduced flexibility of the low back, and pain when ordinary movements of the trunk are attempted.
- spinal fusion has generally been regarded as the most effective surgical treatment to alleviate back pain due to degeneration of a disc. While this treatment is often effective at relieving back pain, all discal motion is lost in the fused spinal motion segment. The loss of motion in the affected spinal segment necessarily limits the overall spinal mobility of the patient. Ultimately, the spinal fusion places greater stress on the discs adjacent the fused segment as these segments attempt to compensate for lack of motion in the fused segment, often leading to early degeneration of these adjacent spinal segments.
- Total disc replacement is a highly invasive and technically demanding procedure which accesses the disc from an anterior or frontal approach and includes dividing the anterior longitudinal ligament, removing the cartilaginous end plates between the vertebral bone and the disc, large portions of the outer annulus and the complete inner nucleus. Then an artificial total disc prosthesis is carefully placed in the evacuated disc space.
- UHMWPE ultra high molecular weight polyethylene
- a summary of the history of early development and designs of artificial discs is set forth in Ray, "The Artificial Disc: Introduction, History and Socioeconomics," dipt. 21, Clinical Efficacy and Outcome in the Diagnosis of Low Back Pain, pgs. 205-225, Raven Press (1992). Examples of these layered total disc replacement devices are shown, for example, in U.S. Patent Nos. 4,911,718, 5,458,643, 5,545,229 and 6,533,818.
- nucleus replacements are also inert, non-rigid, non-biological replacements.
- the procedure for implanting a nucleus replacement is less invasive than the procedure for a total disc replacement and generally includes the removal of only the nucleus and replacement of the nucleus with a prosthesis that may be malleable and provide cushioning that mimics a natural disc nucleus.
- implants used for nucleus replacement include: U.S. Pat. Nos. 4,772,287, 4,904,260, 5,192,326, 5,919,236 and 6,726,721.
- nucleus replacements utilize hydrogels because of their water imbibing properties that enable these replacements to expand in situ to permit a more complete filling of the evacuated nucleus cavity.
- hydrogel nucleus disc replacements have generally adopted the use of some form of a jacket or fabric to constrain the hydrogel material.
- the implant described in U.S. Patent Nos. 4,772,287 and 4,904,260 consists of a block of hydrogel encased in a plastic fabric casing.
- the implant described in U.S. Pat. No. 5,192,326 consists of hydrogel beads enclosed by a fabric shell.
- nucleus replacement involves implantation of a balloon or other container into the nucleus, which is then filled with a biocompatible material that hardens in situ. Examples of this in situ approach to nucleus replacement include U.S. Patent Nos. 6,443,988 and 7,001,431.
- a biocompatible material that hardens in situ. Examples of this in situ approach to nucleus replacement include U.S. Patent Nos. 6,443,988 and 7,001,431.
- One of the problems with this approach is that the chemical hardening process is exothermic and can generate significant amounts of heat that may cause tissue damage.
- the balloon may rupture during expansion, causing leakage of material into the disc cavity and surrounding tissues, which may cause undesirable complications.
- Another technique for nucleus replacement involves implanting a multiplicity of individual support members, such as beads, one at a time in the evacuated disc nucleus cavity until the cavity is full. Examples of this approach include U.S. Patent Nos. 5,702,454 and 5,755,797. Because each of the individual support members or beads is relatively small, there is a possibility that one or more of the individual support members or beads may extrude out of the evacuated disc nucleus cavity. From a mechanical perspective, this technique is limited in the ability to produce consistent and reproduceable results because the location and interaction of the multiplicity of beads or support members is not controlled and the beads or support members can shift during and after implantation.
- nucleus prosthesis that may be inserted using a minimally invasive procedure and that mimics the characteristics of a natural disc.
- the present invention provides a method and apparatus for repairing a damaged intervertebral disc nucleus in a minimally invasive manner utilizing a modular disc nucleus prosthesis.
- the modular disc prosthesis preferably comprises at least three modular segments.
- each modular segment includes an inner core and an outer shell.
- the modular segments are selectively interlockable in situ with each other.
- the modular segments form an implanted unitary device that closely mimics the geometry of the disc nucleus cavity.
- a modular disc nucleus prosthesis that is adapted to be implanted in an evacuated disc nucleus space includes at least three modular segments each having a width defined by opposing sides, a proximal end, and a distal end.
- the modular segments are selectively interlockable with each other such that the prosthesis has an extended configuration and an implanted configuration.
- the proximal end of one side of an outer modular segment is operably positioned proximate the distal end of one of the sides of an intermediate modular segment and the distal end of one side of another outer modular segment is operably positioned proximate the proximal end of another of the sides of an intermediate modular segment.
- the modular segments are positioned within the evacuated nucleus disc space in a generally side by side relation with the proximal ends of each modular segment adjacent one another and the distal ends of each modular segment adjacent one another so as to define a unitary body having a generally continuous periphery in which an overall width of the modular segments generally corresponds to a width of the evacuated disc nucleus cavity.
- each modular segment comprises an inner core and an outer shell.
- Outer shells of modular segments are preferably comprised of polymer material, hi one embodiment, the inner cores of the modular segments are comprised of polyvinyl alcohol (PVA) 5 which can be insert molded into the polymer outer shell.
- PVA polyvinyl alcohol
- PVA polyvinyl alcohol
- Another aspect of the present invention provides a method for implanting a modular disc nucleus prosthesis.
- the method is minimally invasive because the modular disc prosthesis is implanted incrementally, so the device can be implanted through an annulotomy much smaller than the size of the implanted configuration of the device.
- the first modular segment is introduced into the patient's disc space and is placed partway into the disc nucleus space.
- the second modular segment is then attached to the first modular segment.
- the first modular segment is mostly inserted into the disc nucleus space
- the second modular segment is slid up partway into the disc space and the third modular segment is attached to the second modular segment.
- the first modular segment is completely inserted at this point.
- the second modular segment is then extended into position along side of the first modular segment and is locked into place in the disc nucleus space.
- FIG. 1 is a perspective view of a modular disc prosthesis according to the preferred embodiment of the present invention.
- FIG. 2 is a top view of a modular disc prosthesis according to the preferred embodiment of the present invention.
- FIG. 3A is a perspective view of a first modular segment according to the preferred embodiment of the present invention.
- FIG. 3B is a top view of a first modular segment according to the preferred embodiment of the present invention.
- FIG. 3C is a cross sectional view of a first modular segment according to the preferred embodiment of the present invention.
- FIG. 4A is a perspective view of a second modular segment according to the preferred embodiment of the present invention.
- FIG. 4B is a top view of a second modular segment according to the preferred embodiment of the present invention.
- FIG. 4C is a cross sectional view of a second modular segment according to the preferred embodiment of the present invention.
- FIG. 5A is a perspective view of a third modular segment according to the preferred embodiment of the present invention.
- FIG. 5B is a top view of a third modular segment according to the preferred embodiment of the present invention.
- FIG. 5C is a cross sectional view of a third modular segment according to the preferred embodiment of the present invention.
- FIG. 6A is a perspective view of a fourth modular segment according to the preferred embodiment of the present invention.
- FIG. 6B is a top view of a fourth modular segment according to the preferred embodiment of the present invention.
- FIG. 6C is a cross sectional view of a fourth modular segment according to the preferred embodiment of the present invention.
- FIG. 7 is a partial view of a modular disc prosthesis according to the preferred embodiment of the present invention.
- FIG. 8 is a top view of a modular disc prosthesis according to the preferred embodiment of the present invention.
- FIG. 9 is a perspective view of a modular disc prosthesis according to an alternate embodiment of the present invention.
- FIG. 10 is a perspective view of a modular disc prosthesis according to an alternate embodiment of the present invention.
- modular disc prosthesis 100 comprises first 102, second 104, third 106, and fourth 108 interlocking modular segments.
- first 102 second 104
- third 106 third 106
- fourth 108 interlocking modular segments.
- the preferred embodiment can be easily modified to comprise greater or fewer modular segments, so long as there are at least three modular segments.
- First modular segment 102 of modular disc prosthesis 100 is preferably comprised of an outer shell 102a and an inner core 102b.
- Outer shell 102a further includes a locking slide 110 for interlocking with an adjacent modular segment.
- Second modular segment 104 is depicted in FIGS. 4A-4C.
- Second modular segment 104 is comprised of an outer shell 104a and an inner core 104b.
- Outer shell 104a further includes first 112 and second 114 slots into which locking slides of adjacent modular segments are inserted.
- third modular segment 106 of the preferred embodiment of modular disc prosthesis 100 is shown.
- Third modular segment 106 is comprised of an outer shell 106a and an inner core 106b.
- Outer shell 106a further includes first 116 and second 118 locking slides for insertion into slots in adjacent modular segments.
- the fourth modular segment 108 according to the preferred embodiment of the present invention is shown in FIGS. 6A-6C.
- Fourth modular segment 108 is comprised of an outer shell 108a and an inner core 108b.
- Outer shell 108a further includes a slot 120 for connecting to an adjacent modular segment.
- each modular segment 102, 104, 106, 108 is unique.
- the two outermost modular segments 102 and 108 have interlocking structure defined on only an inner facing side, whereas the intermediate modular segments 104 and 106 have interlocking structure defined on both side of the width of each module.
- the unique configuration of each module assures that the order of insertion of the modular segments cannot be mixed up and the proper number of modular segments is used.
- the four part design comes packaged sterile and ready for assembly at the surgical site.
- modular segments may be of a uniform design (for example, a slot on one side and a locking slide on the other) in order to allow for the surgeon to freely add or subtract from the total number of modular segments or to select an intermediate modular segment of differing widths to change the size of modular disc prosthesis to better accommodate the disc nucleus space in a particular procedure.
- modular segments 102, 104, 106, 108 are capable of interlocking with one another by inserting locking slides 110, 116, 118 into slots 112, 114, 120.
- locking slides 110, 116, 118 and slots 112, 114, 120 have a tongue- in-groove design.
- Interlocking may be accomplished with ridges, dovetail, ratchet and pawl or any other suitable mechanical interface method.
- Interlocking may also be complimented by or entirely accomplished by material interface such as by forming the interlocking interface of materials that are hygroscopic and swell in situ or by forming a chemical bond across the interface.
- the disc nucleus device includes at least one bidirectional locking element to prevent forward and/or backward motion of the components.
- the disc nucleus prosthesis may include at least two unidirectional locking elements. Wherein at least one of the locking elements prevents forward movement of the components and at least one of the other unidirectional locking elements prevents backward movement of the components.
- a ratchet release tool or other similar tool may be provided in case separation of modular segments is desired once they are locked together.
- modular segments can interlock through a variety of other means.
- modular segments may also be provided with an end block to ensure flush alignment between modular segments.
- Modular segments are preferably made from polymeric materials, hi the preferred embodiment, outer shells 102a, 104a, 106a, 108 a of modular segments 102, 104, 106, 108 are comprised of polyurethane. hi a preferred embodiment, locking slides, 110, 116, 118 and slots 112, 114, 120 are made from polyurethane with a higher durometer than the rest of outer shell 102, 104a, 106a, 108a to further strengthen the interlocking between adjacent segments.
- the two different durometer polyurethanes in such an embodiment may be co- polymerized to form a chemical bond between them, hi further alternate embodiments, outer shells may be formed of any other suitable elastomeric biomaterials.
- inner core 102b, 104b, 106b, 108b of modular segments 102, 104, 106, 108 is comprised of polyvinyl alcohol (PVA).
- PVA polyvinyl alcohol
- the PVA takes on much more water than the polyurethane, which serves two advantages. First, this softens the compression modulus of modular disc prosthesis 100, allowing the device to more closely mimic the properties of a natural disc nucleus. Second, it will swell the prosthesis 100 a small amount once inside the body, allowing the device to more fully fill the disc nucleus space.
- the inner core may be comprised of any other suitable hygroscopic material.
- the modular disc nucleus prosthesis is deformable in response to normal physiological forces of 30 to 300 pounds. Because of this deformability, the prosthesis produces a physiologically appropriate amount of loading on the end plates of the intervertebral disc. As a result, the end plates will not excessively deform over time and ultimately conform to the contours of the implant as is the case with many more rigid disc nucleus replacement implants.
- the modular disc nucleus prosthesis may be introduced through an access tube that is inserted partially into the disc nucleus space.
- Access tube is at least 3 inches long and preferably about 6 inches long. It should be noted that although the insertion of modular disc prosthesis is described in relation to a preferred four-segment embodiment, embodiments having any other number of segment s would be inserted in a similar fashion.
- An insertion tool may be used to aid in the insertion and positioning of the modular prosthesis.
- a tool has a distal end that selectively engages and releases the modular segments and a proximal end containing a means to activate the engagement and release mechanism.
- the engagement method of the insertion tool may include a full or partial sleeve that provides an interference fit with the outer surface of the modular segments, a rod possessing a tip that can be expanded to interlock in a corresponding cavity within each modular segment, two or more rods with shaped or angled tips that can be inserted and opposed into corresponding cavities within each modular segment, or other similar means apparent to one skilled in the art.
- the distal end of the insertion tool may also possess a wire, rod, rail, or other means to align a modular segment being inserted with one already positioned at least partly within the disc space.
- the insertion tool may be made out of any combination of plastics, metals, ceramics, or the like.
- first modular segment 102 is preferably approximately 80% inserted into the disc nucleus space
- second modular segment 104 is transposed along the locking slide 110 of first modular segment 102 partway into the disc nucleus space and a distal end of the third modular segment 106 is attached to a proximal end of the second modular segment 104 by sliding locking slide 116 into slot 114 with a third insertion tool.
- First modular segment 102 is completely inserted at this point and is released from the first insertion tool.
- Second modular segment 104 is then extended into position along side of first modular segment 102, is locked into place in the disc nucleus space and is released from second insertion tool.
- Third modular segment 106 is now partway in the disc nucleus space and a distal end of fourth modular segment 108 is attached to a proximal end of third modular segment 106 by sliding slot 120 onto locking slide 118 with a fourth insertion tool.
- Third modular segment 106 is then completely inserted and locked into place and is released from third insertion tool.
- fourth modular segment 108 is inserted completely into the disc nucleus space, locked in place with the other modular segments, and released from fourth insertion tool.
- first modular segment is engaged by a first insertion tool and fully inserted into the nucleus cavity.
- Second modular segment is then attached to first modular segment using a second insertion tool and is fully inserted into the nucleus cavity.
- Subsequent modular segments are then attached in the same manner until the modular prosthesis is fully assembled.
- the insertion tool used with any of the embodiments of the present invention may be designed to engage two or more modular segments simultaneously to avoid requiring multiple insertion tools to perform the implantation procedure.
- modular disc prosthesis may be implanted using an anterior lateral approach. An anterior lateral approach allows for a larger insertion opening to be used while still being minimally invasive.
- the prosthesis consists of preformed components that are under direct surgeon control until the device is completely formed, thus, there is little chance of dislocation of the components as the components are inserted.
- the ability to control the components during insertion is an advantage over devices that employ individual support members, such as beads, which once inserted are beyond the surgeon's control and may move about in the evacuated disc space. Because the components of the present invention remain under the surgeon's direct control, the surgeon is able to place the components more precisely in the evacuated disc space with less chance of the components moving into an undesirable position during insertion of the device.
- the ability to predetermine the size of the modular disc prosthesis also allows for the nucleus cavity to be more completely filled and provides a greater degree of control over the uniformity of the stress response of the implant as compared to other kinds of minimally invasive implants. Because the stress response of the implant may be controlled, even with an incompetent posterior wall, the prosthesis should remain stable.
- the ability to tailor the size of the prosthesis and completely fill the nucleus cavity also prohibits the prosthesis from dislodging out of the nucleus cavity after the device is completely implanted as can happen with some hydrogel block implants.
- Modular disc prosthesis 200 is a three piece implant with tethers 216, 218 to help align the device.
- Modular disc prosthesis 200 comprises a first modular segment 202 with a slot 208 formed therein, a second modular segment 204 with first 210 and second 212 locking slides, and a third modular segment 206 having a slot 214.
- Modular disc prosthesis 200 further includes tethers 216, 218 that are threaded through holes 220, 222 in first modular segment 202 and third modular segment 206.
- tethers 216, 218 may vary and that tethers may be used with modular disc prosthesis having different numbers of modular segments.
- the outer shell of the modular disc nucleus prosthesis may be modified to provide for elution of medicants.
- medicants may include analgesics, antibiotics, antineoplastics or bioosteo logics such as bone growth agents. While motion preservation is generally a principle goal in nucleus replacement, in certain indications it may be desirable to promote some bony fusion. Such indications may include nuclear replacements in the cervical spine.
- the solid polymer outer shell of the modular disc nucleus prosthesis may provide for better and more controllable elution rates than some hydrogel materials.
- the modular disc nucleus prosthesis may include different elution rates for each polymer material. This would allow for varying elution rates for different medicants.
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Transplantation (AREA)
- Neurology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Cardiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Physical Education & Sports Medicine (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US68533205P | 2005-05-24 | 2005-05-24 | |
US70045905P | 2005-07-19 | 2005-07-19 | |
US11/372,477 US7591853B2 (en) | 2005-03-09 | 2006-03-09 | Rail-based modular disc nucleus prosthesis |
US11/372,357 US7267690B2 (en) | 2005-03-09 | 2006-03-09 | Interlocked modular disc nucleus prosthesis |
PCT/US2006/020150 WO2006127848A2 (en) | 2005-03-09 | 2006-05-24 | Interlocked modular disc nucleus prosthesis |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1887986A2 true EP1887986A2 (de) | 2008-02-20 |
EP1887986A4 EP1887986A4 (de) | 2012-05-02 |
Family
ID=37452809
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06760355A Withdrawn EP1887986A4 (de) | 2005-05-24 | 2006-05-24 | Verriegelte modulare bandscheibenkernprothese |
EP06771111.9A Active EP1883378B1 (de) | 2005-05-24 | 2006-05-24 | Schienenbasierte modulare bandscheibenkernprothese |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06771111.9A Active EP1883378B1 (de) | 2005-05-24 | 2006-05-24 | Schienenbasierte modulare bandscheibenkernprothese |
Country Status (7)
Country | Link |
---|---|
EP (2) | EP1887986A4 (de) |
JP (2) | JP4891991B2 (de) |
KR (2) | KR101328801B1 (de) |
CN (2) | CN101193608B (de) |
BR (2) | BRPI0611200A2 (de) |
HK (2) | HK1116041A1 (de) |
WO (1) | WO2006127849A2 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1906886A4 (de) * | 2005-07-19 | 2012-05-02 | Vertebral Technologies Inc | Multi-verbund-bandscheibenprothese |
US9737414B2 (en) | 2006-11-21 | 2017-08-22 | Vertebral Technologies, Inc. | Methods and apparatus for minimally invasive modular interbody fusion devices |
FR2914843B1 (fr) * | 2007-04-13 | 2010-04-23 | Creaspine | Implant intervertebral pour le corps humain ou animal |
US7967866B2 (en) | 2007-11-27 | 2011-06-28 | Warsaw Orthopedic, Inc. | Stackable intervertebral devices and methods of use |
US7985231B2 (en) | 2007-12-31 | 2011-07-26 | Kyphon Sarl | Bone fusion device and methods |
FR2928079A1 (fr) * | 2008-02-28 | 2009-09-04 | Warsaw Orthopedic Inc | Implant de noyau a centrage automatique. |
EP2510882B1 (de) * | 2009-04-03 | 2017-02-01 | Mitchell A. Hardenbrook | Chirurgisches Rückzugsystem |
US9132207B2 (en) | 2009-10-27 | 2015-09-15 | Spine Wave, Inc. | Radiopaque injectable nucleus hydrogel compositions |
US9510953B2 (en) * | 2012-03-16 | 2016-12-06 | Vertebral Technologies, Inc. | Modular segmented disc nucleus implant |
CN106073953B (zh) * | 2016-08-26 | 2017-12-08 | 常州好利医疗科技有限公司 | 联动式椎间融合器 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002017824A2 (en) * | 2000-08-30 | 2002-03-07 | Sdgi Holdings, Inc. | Intervertebral disc nucleus implants and methods |
US20030220649A1 (en) * | 1994-05-06 | 2003-11-27 | Qi-Bin Bao | Intervertebral disc prosthesis |
US20040049283A1 (en) * | 2002-06-04 | 2004-03-11 | Tushar Patel | Medical implant and method of reducing back pain |
WO2006051547A2 (en) * | 2004-11-15 | 2006-05-18 | Disc-O-Tech Medical Technologies, Ltd. | Assembled prosthesis such as a disc |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4279097A (en) * | 1980-06-02 | 1981-07-21 | Walker Gary W | Soft playing disc |
CA1333209C (en) | 1988-06-28 | 1994-11-29 | Gary Karlin Michelson | Artificial spinal fusion implants |
US5609635A (en) * | 1988-06-28 | 1997-03-11 | Michelson; Gary K. | Lordotic interbody spinal fusion implants |
JP3007903B2 (ja) * | 1991-03-29 | 2000-02-14 | 京セラ株式会社 | 人工椎間板 |
CN1156255C (zh) * | 1993-10-01 | 2004-07-07 | 美商-艾克罗米德公司 | 脊椎植入物 |
ES2259298T3 (es) | 1999-10-21 | 2006-10-01 | Sdgi Holdings, Inc. | Implantes de acercamiento lateral posterior al espacio de disco. |
AU2001285488A1 (en) * | 2000-08-28 | 2002-03-13 | Advanced Bio Surfaces, Inc | Method for mammalian joint resurfacing |
US6468311B2 (en) * | 2001-01-22 | 2002-10-22 | Sdgi Holdings, Inc. | Modular interbody fusion implant |
US6595998B2 (en) * | 2001-03-08 | 2003-07-22 | Spinewave, Inc. | Tissue distraction device |
US7008452B2 (en) * | 2003-06-26 | 2006-03-07 | Depuy Acromed, Inc. | Dual durometer elastomer artificial disc |
US20060195191A1 (en) * | 2005-01-08 | 2006-08-31 | Alphaspine Inc. | Modular disc device |
-
2006
- 2006-05-24 CN CN200680018462XA patent/CN101193608B/zh active Active
- 2006-05-24 BR BRPI0611200-5A patent/BRPI0611200A2/pt not_active IP Right Cessation
- 2006-05-24 WO PCT/US2006/020152 patent/WO2006127849A2/en active Search and Examination
- 2006-05-24 EP EP06760355A patent/EP1887986A4/de not_active Withdrawn
- 2006-05-24 EP EP06771111.9A patent/EP1883378B1/de active Active
- 2006-05-24 BR BRPI0611201-3A patent/BRPI0611201A2/pt not_active IP Right Cessation
- 2006-05-24 KR KR1020077029964A patent/KR101328801B1/ko active IP Right Grant
- 2006-05-24 KR KR1020077029963A patent/KR101330340B1/ko active IP Right Grant
- 2006-05-24 CN CN2006800184530A patent/CN101500513B/zh active Active
- 2006-05-24 JP JP2008513687A patent/JP4891991B2/ja active Active
- 2006-05-24 JP JP2008513686A patent/JP4832514B2/ja active Active
-
2008
- 2008-10-24 HK HK08111702.8A patent/HK1116041A1/xx unknown
-
2010
- 2010-02-04 HK HK10101206.6A patent/HK1134010A1/xx unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030220649A1 (en) * | 1994-05-06 | 2003-11-27 | Qi-Bin Bao | Intervertebral disc prosthesis |
WO2002017824A2 (en) * | 2000-08-30 | 2002-03-07 | Sdgi Holdings, Inc. | Intervertebral disc nucleus implants and methods |
US20040049283A1 (en) * | 2002-06-04 | 2004-03-11 | Tushar Patel | Medical implant and method of reducing back pain |
WO2006051547A2 (en) * | 2004-11-15 | 2006-05-18 | Disc-O-Tech Medical Technologies, Ltd. | Assembled prosthesis such as a disc |
Non-Patent Citations (1)
Title |
---|
See also references of WO2006127848A2 * |
Also Published As
Publication number | Publication date |
---|---|
JP4891991B2 (ja) | 2012-03-07 |
CN101193608A (zh) | 2008-06-04 |
WO2006127849A2 (en) | 2006-11-30 |
KR101330340B1 (ko) | 2013-11-15 |
JP2008541875A (ja) | 2008-11-27 |
CN101500513A (zh) | 2009-08-05 |
CN101500513B (zh) | 2013-08-14 |
WO2006127849A3 (en) | 2008-12-04 |
CN101193608B (zh) | 2012-10-24 |
KR20080025078A (ko) | 2008-03-19 |
EP1883378A4 (de) | 2012-05-02 |
EP1883378A2 (de) | 2008-02-06 |
BRPI0611200A2 (pt) | 2010-08-24 |
KR20080039846A (ko) | 2008-05-07 |
HK1116041A1 (en) | 2008-12-19 |
KR101328801B1 (ko) | 2013-11-13 |
JP2008545475A (ja) | 2008-12-18 |
EP1883378B1 (de) | 2020-02-26 |
EP1887986A4 (de) | 2012-05-02 |
HK1134010A1 (en) | 2010-04-16 |
JP4832514B2 (ja) | 2011-12-07 |
BRPI0611201A2 (pt) | 2010-08-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US7267690B2 (en) | Interlocked modular disc nucleus prosthesis | |
US11491023B2 (en) | Methods and apparatus for minimally invasive modular interbody fusion devices | |
AU768415B2 (en) | Prosthetic spinal disc nucleus having selectively coupled bodies | |
EP1421921B1 (de) | Künstliche Bandscheibe | |
EP1887986A2 (de) | Verriegelte modulare bandscheibenkernprothese | |
KR20060056264A (ko) | 추간판 임플란트 | |
JP2006515780A (ja) | 人工髄核およびその注入方法 | |
AU2009200502B2 (en) | Artifical spinal disc | |
EP1906886A2 (de) | Multi-verbund-bandscheibenprothese |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20071227 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR |
|
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20120330 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: A61F 2/44 20060101AFI20120326BHEP |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20121030 |