DE19951141A1 - Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head - Google Patents
Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-headInfo
- Publication number
- DE19951141A1 DE19951141A1 DE19951141A DE19951141A DE19951141A1 DE 19951141 A1 DE19951141 A1 DE 19951141A1 DE 19951141 A DE19951141 A DE 19951141A DE 19951141 A DE19951141 A DE 19951141A DE 19951141 A1 DE19951141 A1 DE 19951141A1
- Authority
- DE
- Germany
- Prior art keywords
- shaft
- hip joint
- joint
- neck piece
- head
- 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- Withdrawn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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3662—Femoral shafts
- A61F2/367—Proximal or metaphyseal parts of shafts
-
- 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
- A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
-
- 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
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
-
- 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
- A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
- A61F2002/30339—Double cones, i.e. connecting element having two conical connections, one at each of its opposite ends
-
- 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
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—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
- A61F2002/30354—Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
- A61F2002/30357—Stepped cylinders, i.e. having discrete diameter changes
-
- 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
- A61F2002/30378—Spherically-shaped protrusion and recess
-
- 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
- A61F2002/30405—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by screwing complementary threads machined on the parts themselves
-
- 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
- A61F2002/30448—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
- A61F2002/30449—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives the adhesive being cement
-
- 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
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
-
- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
-
- 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
- A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
- A61F2002/3055—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting length
-
- 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
- A61F2002/30574—Special structural features of bone or joint prostheses not otherwise provided for with an integral complete or partial collar or flange
-
- 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
- A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
- A61F2002/30649—Ball-and-socket joints
- A61F2002/3065—Details of the ball-shaped head
- A61F2002/30652—Special cut-outs, e.g. flat or grooved 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
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30774—Apertures or holes, e.g. of circular cross section internally-threaded
-
- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30772—Apertures or holes, e.g. of circular cross section
- A61F2002/30784—Plurality of holes
- A61F2002/30789—Plurality of holes perpendicular with respect to each other
-
- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30795—Blind bores, e.g. of circular cross-section
- A61F2002/30797—Blind bores, e.g. of circular cross-section internally-threaded
-
- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30795—Blind bores, e.g. of circular cross-section
- A61F2002/30813—Stepped or enlarged blind bores, e.g. having discrete diameter changes
-
- 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
- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
- A61F2002/30879—Ribs
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3611—Heads or epiphyseal parts of femur
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3625—Necks
- A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/365—Connections of heads to necks
-
- 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
- A61F2/32—Joints for the hip
- A61F2/36—Femoral heads ; Femoral endoprostheses
- A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
- A61F2002/3652—Connections of necks to shafts
-
- 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
- A61F2002/4631—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor the prosthesis being specially adapted for being cemented
-
- 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
- A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
- A61F2002/4641—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis for disconnecting
-
- 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
-
- 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
- A61F2220/005—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using adhesives
-
- 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
- A61F2250/0004—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable
- A61F2250/0006—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof adjustable for adjusting angular orientation
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (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)
- Prostheses (AREA)
Abstract
Description
Die Erfindung betrifft eine Hüftgelenk-Endoprothese mit ei nem im oberen Ende eines Oberschenkels verankerbaren, sich zum unteren Ende hin verjüngenden Schaft, an dessen hüftge lenkseitigem oberen Ende ein in einer im Hüftgelenk implan tierbaren Pfanne gelagerter kugelförmiger Gelenkkopf durch ein unter einem Winkel zum Schaft verlaufendes Halsstück beabstandet vorgesehen ist, wobei das den kugelförmigen Gelenkkopf tragende Halsstück und der Schaft gesonderte Teile sind.The invention relates to a hip joint endoprosthesis with egg that can be anchored in the upper end of a thigh shaft tapering towards the lower end, at the hip end Steering-side upper end in an implan in the hip joint animal-shaped pan with spherical joint head a neck piece running at an angle to the shaft is provided spaced apart, which is the spherical Articulated head-bearing neck piece and the shaft separate Parts are.
Bei bekannten Hüftgelenk-Endoprothesen wird die Verbindung zwischen dem Gelenkkopf und dem Gelenkschaft über ein Ver bindungsteil hergestellt. Diese bekannte Ausbildung hat den Vorteil, dass eine flexible Anpassung der Prothese an die anatomische Gegebenheit des Patienten erfolgen kann. Hier bei ist die Einstellbarkeit der Gelenkkopfgröße und des sogenannten CCD-Winkels (Centrum-Collum-Diaphyse-Winkel) von besonderer Bedeutung. Der Operateur kann somit eine Hüftgelenk-Pfanne mit einer für die anatomischen Verhält nisse des Patienten geeigneten Größe samt dem zugehörigen Gelenkkopf auswählen und diese gegebenenfalls intraoperativ austauschen. Der CCD-Winkel wird aus dem Schnittwinkel der Schenkelhalsachse mit der Diaphysenachse ermittelt. Nach v. Lanz beträgt dieser Wert im Mittel 128°. Dieser stark patientenabhängige Wert kann bei heutigen Prothetiken in diskreten Schritten an die anatomische Gegebenheit des Patienten angepasst werden. Dies geschieht beispielsweise indem zwischen Prothesenschaft und Gelenkkopf ein auf bei den Seiten mit angeformten Konen versehenes Winkelstück in komplementäre konische Bohrungen des Prothesenschafts und des Gelenkkopfes gesteckt wird. Durch die Abwinklung des Winkelstücks mit den beiden Konen wird der CCD-Winkel ein gestellt. Gebräuchlicherweise erfolgt eine Adaption im Be reich von 0° bis 25° und wird in 5°-Schritten mittels ent sprechender Winkelstücke dargestellt (DE 36 00 804 C1).In known hip joint endoprostheses, the connection between the joint head and the joint shaft via a ver binding part manufactured. This well-known training has the Advantage that a flexible adaptation of the prosthesis to the anatomical condition of the patient can take place. Here at is the adjustability of the joint head size and the so-called CCD angle (centrum collum diaphysis angle) really important. The surgeon can thus Acetabular cup with an anatomical ratio size of the patient together with the appropriate size Select the rod end and if necessary, intraoperatively change. The CCD angle is calculated from the cutting angle of the Femoral neck axis determined with the diaphyseal axis. To v. Lanz has an average of 128 °. This strong patient-dependent value can be in today's prosthetics discrete steps to the anatomical condition of the Patients are adjusted. This happens, for example by placing an on between the prosthetic socket and the joint head angled piece in the sides with molded cones in complementary conical bores of the prosthetic socket and of the joint head is inserted. By bending the The contra-angle with the two cones becomes the CCD angle posed. Customarily, an adaptation takes place in the loading range from 0 ° to 25 ° and is done in 5 ° steps using ent speaking elbows shown (DE 36 00 804 C1).
Aufgabe der Erfindung ist es, eine Hüftgelenk-Endoprothese derart auszubilden, dass die Adaption der Prothese an die speziellen anatomischen Gegebenheiten der Patienten in stu fenloser Weise erfolgen kann.The object of the invention is a hip joint endoprosthesis in such a way that the adaptation of the prosthesis to the special anatomical conditions of the patient in stu can be done without a window.
Ausgehend von einer Endoprothese der eingangs erwähnten Art wird diese Aufgabe dadurch gelöst, dass das schaftseitige Ende des Halsstücks über eine Gelenkverbindung derart mit dem hüftseitigen Ende des Schafts verbunden ist, dass eine Veränderung der Winkelstellung des Halsstücks relativ zur Schaftlängsachse einstellbar ist und gewählte Winkelstel lungen des Halsstücks relativ zur Schaftlängsachse mit Blockiermitteln fixiert werden. Dadurch wird erreicht, dass der Operateur den vor der Operation mit anderen Mitteln be stimmten CCD-Winkel des Patienten voreinstellen oder gege benenfalls auch noch intraoperativ stufenlos an der Hüftge lenk-Endoprothese einstellen kann. Die zwischen dem femur seitigen Prothesenschaft und einem zwischen dem Prothesen schaft und dem Gelenkkopf liegenden Halsstück vorgesehene Gelenkverbindung erlaubt es, die Einstellung des CCD-Win kels in stufenloser Weise vorzunehmen. Hat der Operateur die gewünschte Positionierung des Prothesenschafts relativ zum Halsstück eingestellt, wird die Gelenkverbindung zwi schen diesen beiden Bauteilen durch Blockiermittel fixiert. Neben der genannten stufenlosen und somit individuellen Einstellbarkeit der Prothese auf den Patienten wird außer dem der Vorteil erreicht, dass sich die Anzahl der zu be vorratenden Teile im Vergleich zum bekannten Prothesen system mit einer Vielzahl unterschiedlicher Halsstücke (Adapter) erheblich reduziert. So mussten bislang mehrere Winkelstücke bereit gehalten werden für den Fall, dass der vorbestimmte CCD-Winkel korrigierte werden musste und bei spielsweise anstatt eines 5°-Winkelstücks ein 10°-Winkel stück erforderlich wurde. Außerdem können bei der vorlie genden Erfindung aufgrund der Gelenkkinematik Einstellungen vorgenommen werden, bei der sich der Gelenkkopf in einer der Kinematik entsprechenden Weise bewegt, wohingegen bei bisherigen Techniken durch Drehung der konischen Winkel stücke bestenfalls kreisförmige Einstellbewegungen möglich sind.Starting from an endoprosthesis of the type mentioned at the beginning this task is solved in that the shaft-side End of the neck piece with such a joint connection the hip end of the shaft is connected to that one Change the angular position of the neck piece relative to Longitudinal axis of the shaft is adjustable and selected angle lungs of the neck piece relative to the longitudinal axis of the shaft Blocking agents are fixed. This ensures that the surgeon should use other means before the operation agreed to preset or counter the patient's CCD angle if necessary, also infinitely continuously on the hip steerable endoprosthesis. The between the femur sided prosthesis socket and one between the prosthesis shaft and the articulated head lying neck piece provided Articulated connection allows the setting of the CCD-Win kels in a stepless manner. Has the surgeon the desired positioning of the prosthetic socket relative set to the neck piece, the articulation between between these two components fixed by blocking agents. In addition to the stepless and therefore individual Adjustability of the prosthesis to the patient is excluded which has the advantage that the number of be parts in stock compared to the known prosthesis system with a variety of different neck pieces (Adapter) significantly reduced. So far, several have had to Contra-angles are kept ready in case the predetermined CCD angles had to be corrected and at for example, instead of a 5 ° contra-angle, a 10 ° angle piece was required. In addition, at the present ing invention due to the joint kinematics settings be made in which the joint head in a moves according to the kinematics, whereas at previous techniques by rotating the conical angle Pieces circular adjustment movements are possible at best are.
Bei einem bevorzugten Ausführungsbeispiel ist die Gelenk verbindung zwischen dem Schaft der Hüftgelenk-Endoprothese und dem Halsstück in Form eines Kugelgelenks ausgeführt. Hierbei ist die Kugel in einer Vertiefung des Hüftgelenk- Endoprothesen-Schafts gelagert und innerhalb eines vorgege benen Einstellbereichs frei beweglich. Nach der Einstellung der gewünschten Position des Halsstücks erfolgt die Fixie rung über eine Blockierung. Hierbei wird ein oberhalb einer Einstellkugel des Halsstücks befindlicher Blockierring in den Hüftgelenk-Endoprothesenschaft eingeschraubt, der die Einstellkugel durch eine axial wirkende Kraft gegen den Boden der Schaftbohrung drückt, wo sie aufgrund der Reib kräfte fixiert wird. In a preferred embodiment, the hinge Connection between the shaft of the hip joint endoprosthesis and the neck piece in the form of a ball joint. The ball is in a recess in the hip joint Endoprosthesis stem stored and within a pre free adjustment range. After hiring The fixie is placed in the desired position of the neck piece blocking. Here, one above one Locking ring in screwed the hip joint endoprosthesis shaft, which the Adjustment ball by an axially acting force against the Bottom of the shaft bore presses where it is due to the friction forces is fixed.
In vorteilhafter Weiterbildung der Erfindung kann der Blockierring in zweiteiliger Form ausgeführt sein, wodurch eine Optimierung des Kraftflusses und somit der Blockier wirkung erzielt wird.In an advantageous development of the invention, the Blocking ring to be designed in two parts, whereby an optimization of the power flow and thus the blocking effect is achieved.
Vorteilhafterweise kann das Gewinde des Blockierrings als selbsthemmendes Gewinde ausgeführt werden, wodurch eine Sicherung gegen das unbeabsichtigte Lösen des Blockierrings erreicht wird.Advantageously, the thread of the locking ring as self-locking thread can be executed, creating a Protection against unintentional loosening of the blocking ring is achieved.
Alternativ kann die Gelenkverbindung zwischen Schaft und Halsstück als Kreuzgelenk ausgeführt sein, wobei ebenfalls wieder Mittel vorgesehen sind, die eine Fixierung der Gelenkteile in wählbaren Stellungen erlauben.Alternatively, the articulation between the shaft and Neck piece to be designed as a universal joint, also again funds are provided that fix the Allow hinge parts in selectable positions.
Anstelle einer Kreuzgelenk-Verbindung kommt auch eine ver einfachte einachsige Gelenk-Verbindung in Frage, wodurch der technischen Aufwand - wenn auch unter Verzicht auf die volle individuelle Einstellbarkeit des Halsstücks - verrin gert wird.Instead of a universal joint connection there is also a ver simple uniaxial joint connection in question, whereby the technical effort - albeit without the full individual adjustability of the neck piece - reduce is gert.
In zweckmäßiger Weiterbildung der Erfindung kann das Hals stück hüftgelenkseitig ein Außengewinde und der Gelenkkopf ein entsprechendes Innengewinde aufweisen. Hierdurch lässt sich der Abstand zwischen dem Gelenkkopf-Mittelpunkt und dem Schnittpunkt der Schenkelhalsachse mit der Diaphysen achse stufenlos einstellen. Zur Sicherung der gewählten Einstellung ist es dann zweckmäßig, auch hier eine Siche rung gegen Verstellung, beispielsweise eine Stiftschraube, vorzusehen, die im Bereich des Halsstücks in eine Gewinde bohrung des Gelenkkopfs eingeschraubt wird und das Hals stück fixiert.In an expedient development of the invention, the neck an external thread on the hip joint side and the joint head have a corresponding internal thread. This leaves the distance between the center of the joint head and the intersection of the femoral neck axis with the diaphyses Infinitely adjustable axis. To secure the selected It is then appropriate to use the setting, here too against adjustment, for example a stud screw, Provide a thread in the neck area bore of the joint head and the neck piece fixed.
Für den bündigen Abschluss der Prothese nach außen hin kann der Raum zwischen dem Halsstück und dem Schaft-Oberteil vorzugsweise mit einem im Verarbeitungszustand fließfähigen oder plastischen Füllmaterial verfüllt werden, welches dann aushärtet oder abbindet, und eine zusätzliche Sicherung gegen Veränderungen einer gewählten Einstellung des Hals stücks im Schaft-Oberteil darstellt. Hierdurch ergibt sich außerdem der Vorteil einer geschlossenen einheitlichen Oberfläche, die spätere Probleme durch Relativbewegungen von Körperteilen zur Prothese vermeiden kann. Vorzugsweise wird ein Knochenzement als Füllmaterial verwendet, dessen physiologische und technische Werkstoffeigenschaften hin länglich bekannt sind.For the flush closure of the prosthesis to the outside the space between the neck piece and the shaft top preferably with a flowable in the processing state or plastic filling material, which then hardens or sets, and an additional fuse against changes in a chosen setting of the neck in the upper part of the shaft. This results in also the advantage of a closed uniform Surface, the later problems due to relative movements from parts of the body to the prosthesis. Preferably a bone cement is used as filling material, the physiological and technical material properties are well known.
Im folgenden wird die Erfindung anhand von in der Zeichnung schematisch dargestellten Ausführungsbeispielen näher er läutert.In the following the invention based on in the drawing schematically illustrated embodiments he closer purifies.
In der Zeichnung zeigen:The drawing shows:
Fig. 1 einen Partialschnitt durch einen obe ren Teilabschnitt einer Hüftgelenk- Endoprothese, wobei der in einer Pfanne im Hüftgelenk zu lagernde Gelenkkopf und ein Halsstück mit einer kraftschlüssigen Konusverbindung mit dem Gelenkkopf und der obere Endbe reich des im Markkanal des Femur zu halternden Prothesenschafts durch eine Kugelgelenkverbindung verbunden darge stellt sind; und Fig. 1 shows a partial section through an obe ren partial section of a hip joint endoprosthesis, wherein the joint head to be supported in a socket in the hip joint and a neck piece with a non-positive conical connection with the joint head and the upper end region of the prosthesis shaft to be held in the medullary canal of the femur by a Ball joint connection connected Darge provides; and
Fig. 2 eine Ansicht einer längeneinstellbaren Verbindung zwischen dem Halsstück und dem hüftgelenkseitigen Gelenkkopf, bei welcher das Halsstück in der Seitenan sicht und der Gelenkkopf im Längsmit telschnitt dargestellt ist. Fig. 2 is a view of a length-adjustable connection between the neck piece and the hip joint-side joint head, in which the neck piece in the Seitenan view and the joint head is shown in longitudinal section.
Fig. 1 zeigt einen Partialschnitt durch ein Ausführungs beispiel einer erfindungsgemäßen Hüftgelenk-Endoprothese. Die erfindungsgemäße Hüftgelenk-Endoprothese besteht im we sentlichen aus vier Bauteilgruppen. Die erste Bauteilgruppe bildet eine - in den Figuren nicht dargestellte - pel visseitig implantierte Hüftgelenk-Pfanne, die schalenförmig ausgebildet ist. In der schalenförmigen Hüftgelenk-Pfanne ist als zweite Baugruppe ein kugelförmiger Hüftgelenkkopf 1 beweglich gelagert. An den Hüftgelenkkopf 1 wiederum ist ein als Halsstück 2 bezeichnetes Verbindungsteil ange schlossen, das die dritte Bauteilgruppe darstellt. Auf der gegenüberliegenden Seite des Halsstücks 2 ist als vierte Bauteilgruppe ein langgestreckter Prothesenschaft 3 vorge sehen, der vom Operateur im Markkanal des Femurknochens verankert wird. Die Hüftgelenk-Schale kann in bekannter Weise ausgebildet sein, d. h. ist für die eigentliche Erfin dung nicht von Bedeutung. Aus diesem Grund wird auf eine weitere Beschreibung der Hüftgelenk-Pfanne an dieser Stelle verzichtet. Fig. 1 shows a partial section through an embodiment example of a hip joint endoprosthesis according to the invention. The hip joint endoprosthesis according to the invention consists essentially of four component groups. The first component group forms a hip joint socket implanted on the pelvic side, not shown in the figures, which is cup-shaped. A spherical hip joint head 1 is movably mounted as a second assembly in the cup-shaped hip joint socket. At the hip joint head 1, in turn, a connecting part referred to as neck piece 2 is connected, which represents the third component group. On the opposite side of the neck piece 2 , an elongated prosthesis shaft 3 is provided as the fourth component group, which is anchored by the surgeon in the medullary canal of the femur. The hip joint shell can be designed in a known manner, ie is not important for the actual inven tion. For this reason, no further description of the acetabular cup is given here.
Der Gelenkkopf 1 weist eine glatte und kugelförmige Ober fläche auf, die zusammen mit der schalenförmigen Hüftge lenk-Pfannenfläche in bekannter Weise eine Gleitlagerung bildet. An der dem Pelvis abgewandten Seite ist der Gelenk kopf 1 mit einer konischen, in einem kurzen zylindrischen Absatz 19 eingebrachten Gelenkkopfbohrung 11 zur Aufnahme eines Halsstück-Konus 23 versehen. Das Halsstück 2 ist als längliches starres Bauteil ausgeführt, das gelenkkopfseitig den zuvor erwähnten Halsstück-Konus 23 aufweist, auf wel chem der Gelenkkopf 1 gehalten ist. Das Halsstück 2 weist im Bereich zwischen Gelenkkopf 1 und Oberteil des Schafts 3 darüber hinaus einen frei liegenden umlaufenden Absatz 22 auf, der als Abstützung für eventuell bei der Vorbereitung des Implantats oder während der Operation selbst benötigte Einschlag- oder Abziehwerkzeuge zur Montage bzw. Demontage der Konusverbindung dient. Die zum Abziehen bzw. Einschla gen benötigten Kräfte hängen u. a. vom Konuswinkel, der Oberflächenrauhigkeit und den Werkstoffeigenschaften der verwendeten Materialien ab. Der Konuswinkel ist in jedem Fall so zu wählen, dass eine selbsthemmende Verbindung entsteht, um ein unbeabsichtigtes späteres Lösen der Ver bindung zu vermeiden. Bei der Implantation bzw. dem Zusam menbau wird das Halsstück 2 mit dem oberen Konus 23 in die Gelenkkopfbohrung 11 eingepresst oder eingeschlagen. Am anderen Ende des Halsstücks 2 erfolgt die Verbindung mit dem Oberteil des Schafts 3 dadurch, dass eine dort vorge sehene Einstellkugel 21 in eine Schaftbohrung 31 mit einer Vertiefung 33 eingesetzt wird und sich dabei auf einer zur Einstellkugel 21 komplementär geformten Reibkontaktfläche der Vertiefung 33 abstützt.The joint head 1 has a smooth and spherical upper surface, which together with the cup-shaped hip joint-socket surface forms a plain bearing in a known manner. On the side facing away from the pelvis, the joint head 1 is provided with a conical, in a short cylindrical shoulder 19 introduced joint head bore 11 for receiving a neck cone 23 . The neck piece 2 is designed as an elongated rigid component which has the aforementioned neck piece cone 23 on the joint head side, on which the joint head 1 is held. The neck piece 2 also has an exposed circumferential shoulder 22 in the region between the joint head 1 and the upper part of the shaft 3 , which serves as a support for any hammering or pulling tools required for assembly or disassembly of the implant itself during preparation or during the operation Cone connection serves. The forces required to pull or hammer in depend, among other things, on the cone angle, the surface roughness and the material properties of the materials used. In any case, the cone angle should be chosen so that a self-locking connection is created to avoid unintentional loosening of the connection later. During the implantation or the menbau together the neck portion 2 is press-fitted or connected to the upper cone 23 in the joint head bore 11 wrapped. At the other end of the neck piece 2 , the connection to the upper part of the shaft 3 takes place in that an adjustment ball 21 provided there is inserted into a shaft bore 31 with a recess 33 and is supported on a friction contact surface of the recess 33 that is complementarily shaped to the adjustment ball 21 .
Die zur Fixierung der beiden Gelenkteile 2 und 3 benötigte Anpresskraft wird dann von einem Blockierring-Oberteil 41 und einem Blockierring-Unterteil 42 durch Druck in axialer Richtung gegen die Einstellkugel 21 erzeugt. In dem ge zeigten Ausführungsbeispiel müssen Blockierring-Oberteil 41 und -Unterteil 42 in geschlitzter Form ausgeführt werden, um die Montierbarkeit auf das Halsstück 2 zu gewährleisten. Es sind hierbei aber auch andere, insbesondere mehrteilige Ausführungsformen sowohl des Halsstücks 2 als auch der Blockierringe 41, 42 denkbar. Nach der Einstellung der gewünschten Positionierung des Halsstücks 2 relativ zum Oberteil des Schafts 3, wird das Blockierring-Oberteil 41 durch eine der Gewinderichtung eines Schaft-Innengewindes 32 entsprechende Drehbewegung in Richtung der Einstellkugel 21 bewegt. Dabei drängt das Blockierring-Oberteil 41 das Blockierring-Unterteil 42 mit zur Einstellkugel 21 kom plementär geformten Anlageflächen 45 gegen die Einstell kugel 21. Die hierdurch an den Anlageflächen 45 des Blockierrings 42 und der Reibkontaktfläche der Vertiefung 33 bewirkten Reibkräfte sorgen für eine sichere Fixierung des Kugelgelenks. Der Drehantrieb des Blockierrings 41 kann beispielsweise mittels eines geeigneten schlüsselartigen Werkzeuges erfolgen. In der beschriebenen Weise lässt sich der als CCD-Winkel bezeichnete Geometriewinkel, der zwi schen der Diaphysen- und der Schenkelhalsachse gemessen wird, stufenlos auf die anatomischen Gegebenheiten des Patienten einstellen und fixieren.The pressing force required to fix the two joint parts 2 and 3 is then generated by a blocking ring upper part 41 and a blocking ring lower part 42 by pressure in the axial direction against the adjusting ball 21 . In the embodiment shown, the blocking ring upper part 41 and lower part 42 must be designed in a slotted form in order to ensure that they can be mounted on the neck piece 2 . However, other, in particular multi-part, embodiments of both the neck piece 2 and the blocking rings 41 , 42 are also conceivable. After the desired positioning of the neck piece 2 relative to the upper part of the shaft 3 has been set , the blocking ring upper part 41 is moved in the direction of the adjusting ball 21 by a rotary movement corresponding to the thread direction of an internal shaft thread 32 . Here, the blocking ring upper part 41 urges the blocking ring-bottom 42 with com plement shaped for setting ball 21 contact surfaces 45 against the setting ball 21st The resulting frictional forces on the contact surfaces 45 of the blocking ring 42 and the frictional contact surface of the recess 33 ensure a secure fixation of the ball joint. The blocking ring 41 can be driven, for example, by means of a suitable key-like tool. In the manner described, the geometry angle referred to as the CCD angle, which is measured between the diaphyseal axis and the femoral neck axis, can be continuously adjusted and fixed to the anatomical conditions of the patient.
Für die dauerhafte problemlose Funktion der Hüftgelenk- Endoprothese ist die Vermeidung von Zerklüftungen an der Außenseite der Prothese notwendig. Hierzu wird der Bereich zwischen Halsstück 2 und der Schaftbohrung 31 bzw. den Blockierringen 41 und 42 mit einem im Verarbeitungszustand flüssigen oder plastischen Füllmaterial bündig aufgefüllt, das anschließend aushärtet oder abbindet und eine zusätzli che Sicherung der Blockierringe 41 und 42 gegen Verände rungen einer vorgenommenen Einstellung des Halsstücks im Oberteil des Schafts 3 darstellt. Vorzugsweise wird als Füllmaterial Knochenzement verwendet, der physiologisch und technisch hinlänglich bekannte und unkritische Werkstoff eigenschaften besitzt. Der Schaft 3 der Hüftgelenk-Endopro these kann femurseitig mittels bekannter Verfahren mit dem Knochen verbunden werden, ohne dass hierdurch ein Einfluss auf die Verwendung der erfindungsgemäßen Hüftgelenk-Endo prothese entsteht. Ein geeignetes Verfahren zur Verbindung des Prothesenschafts 3 mit dem Femurknochen ist beispiels weise die "Einzementierung" des Schafts 3 im Markkanal des Femur. Festzuhalten ist, dass durch die beschriebene Ausge staltung eine Hüftgelenk-Endoprothese geschaffen wird, bei der ein zuvor ermittelter patientenabhängiger CCD-Winkel stufenlos eingestellt und die getroffene Einstellung an schließend durch Blockiermittel fixiert werden kann.Avoiding fissures on the outside of the prosthesis is necessary for the permanent, trouble-free function of the hip joint endoprosthesis. For this purpose, the area between the neck piece 2 and the shaft bore 31 or the blocking rings 41 and 42 is filled up flush with a liquid or plastic filler material in the processing state, which then hardens or sets and an additional securing of the blocking rings 41 and 42 against changes in a setting made the neck piece in the upper part of the shaft 3 . Preferably bone cement is used as filler material, which has physiologically and technically well-known and non-critical material properties. The shaft 3 of the hip joint endoprosthesis can be connected to the bone on the femur side using known methods, without this having an influence on the use of the hip joint endoprosthesis according to the invention. A suitable method for compound of the prosthesis shaft 3 to the femur bone is example, the "cementing" of the shaft 3 in the medullary canal of the femur. It should be noted that the design described creates a hip joint endoprosthesis in which a previously determined patient-dependent CCD angle can be adjusted continuously and the setting made can then be fixed by blocking agents.
Die Fig. 2 zeigt ein abgewandeltes Halsstück 2, welches in seinem femurseitigen Endbereich dem in Verbindung mit Fig. 1 beschriebenen Halsstück entspricht. Der hierbei verwen dete Gelenkkopf 1 weist, wie der in Fig. 1 gezeigte, eben falls eine glatte kugelförmige Oberfläche und einen kurzen zylindrischen Schaftabschnitt 19 auf. Die Gelenkkopfbohrung 16 ist im Gegensatz zum vorherigen Ausführungsbeispiel je doch zunächst zylindrisch ausgeführt, an die sich eine Ge windebohrung 12 anschließt. Im ersten Abschnitt bildet die Gelenkkopfbohrung 16 also eine zylindrische Passbohrung mit einer glatten Außenfläche. Ein möglichst einheitlicher Ab schluss des Systems zwischen Gelenkkopf 1 und Halsstück 2 nach außen hin ist dabei zweckmäßig, um eine auf Dauer pro blemlose Relativbewegung zwischen Körperweichteilen und der Gelenkprothese ohne die Gefahr von Einwachsungen, Quet schungen oder ähnlichem gewährleisten zu können. Der an schließende Abschnitt ist dann als zylindrische Bohrung 12 ausgeführt, deren Durchmesser kleiner als der der ersten Stufe ist und die zusätzlich mit einem Innengewinde verse hen ist. Des weiteren ist der Gelenkkopf 1 mit einer im zylindrischen Absatz 19 radial zur Gelenkkopfbohrung 16 angeordneten Gewindebohrung 15 versehen, in die eine Stift schraube 43 als Sicherung bzw. Blockiermittel gegen das unbeabsichtigte Verdrehen des Halsstücks 2 eingeschraubt ist. FIG. 2 shows a modified neck piece 2 , which corresponds in its end region on the femur side to the neck piece described in connection with FIG. 1. The joint head 1 used here, like the one shown in FIG. 1, also has a smooth spherical surface and a short cylindrical shaft section 19 . In contrast to the previous exemplary embodiment, the joint head bore 16 is initially cylindrical, to which a threaded bore 12 connects. In the first section, the joint head bore 16 thus forms a cylindrical fitting bore with a smooth outer surface. The most uniform possible from the end of the system between the joint head 1 and neck piece 2 to the outside is expedient in order to be able to guarantee a permanent, smooth, relative movement between soft body parts and the joint prosthesis without the risk of ingrowth, crushing or the like. The closing section is then designed as a cylindrical bore 12 , the diameter of which is smaller than that of the first stage and which is additionally provided with an internal thread. Furthermore, the joint head 1 is provided with a threaded bore 15 arranged radially to the joint head bore 16 in the cylindrical shoulder 19 , into which a pin screw 43 is screwed in as a securing or blocking agent against the unintentional rotation of the neck piece 2 .
Das Halsstück 2 ist mit einer der Passbohrung 16 komple mentär entsprechenden zylindrischen Außenfläche 14 und ei nem in das Innengewinde der Bohrung 12 des Gelenkkopfs 1 passenden Außengewinde 18 versehen. Durch Zusammenstecken und anschließendes Einschrauben des Halsstücks 2 in den Gelenkkopf 1 kann der Abstand vom Mittelpunkt des Gelenk kopfes 1 zum Mittelpunkt des Einstellkopfes 21 stufenlos innerhalb eines vorgegebenen Einstellbereichs eingestellt werden. Ist dies erfolgt, wird die getroffene Einstellung durch Einschrauben der Stiftschraube 43 fixiert. Die Mon tage und Einstellung des Halsstücks in der Bohrung 31 des Prothesenschafts 3 erfolgt dann wieder analog zu der vor stehend in Verbindung mit Fig. 1 beschriebenen Vorgehens weise. Somit ist neben der zuvor offenbarten stufenlosen Einstellmöglichkeit des CCD-Winkels eine erfindungsgemäße Prothese aufgezeigt, die zusätzlich eine stufenlose Ein stellmöglichkeit des Mittelpunktabstandes zwischen Gelenk kopf-Mittelpunkt und dem Schnittpunkt der Schenkelhalsachse mit der Diaphysenachse ermöglicht. Wenn die Einstellkugel 21 des Halsstücks 2 deutlich größer als der Durchmesser des Halsstück-Oberteils ausgeführt wird, können von der der Ein stellkugel 21 gegenüberliegenden Seite her auch einteilige Blockierringe montiert werden.The neck piece 2 is provided with a fitting bore 16 complementary corresponding cylindrical outer surface 14 and egg nem in the internal thread of the bore 12 of the joint head 1 matching external thread 18 . By plugging and then screwing the neck piece 2 into the joint head 1 , the distance from the center of the joint head 1 to the center of the adjusting head 21 can be adjusted continuously within a predetermined setting range. Once this has been done, the setting made is fixed by screwing in the stud screw 43 . The Mon days and adjustment of the neck piece in the bore 31 of the prosthesis socket 3 is then again analogous to the procedure described above in connection with FIG. 1. Thus, in addition to the previously disclosed stepless adjustment of the CCD angle, a prosthesis according to the invention is shown, which additionally enables a stepless adjustment of the center point distance between the joint head center and the intersection of the femoral neck axis with the diaphysis axis. If the adjusting ball 21 of the neck piece 2 is made significantly larger than the diameter of the neck piece upper part, one-piece locking rings can also be mounted from the side opposite the adjusting ball 21 .
Im Rahmen des Erfindungsgedankens sind zahlreiche Abwand lungen möglich. So können anstelle eines Kugelgelenks bei spielsweise Kreuzgelenke oder einachsige Gelenke verwendet werden. Auch für die Blockiermittel stehen zahlreiche Vari anten zur Verfügung.There are numerous variations within the scope of the inventive concept lungs possible. So instead of a ball joint for example universal joints or uniaxial joints used become. There are also numerous variations for the blocking agents antennas available.
Claims (10)
dass das schaftseitige Ende des Halsstücks (2) über eine Gelenkverbindung derart mit dem hüftseitigen Ende des Schafts (3) verbunden ist, dass eine Veränderung der Winkelstellung des Halsstücks (2) relativ zur Schaft längsachse einstellbar ist, und
dass Blockiermittel zur Fixierung von gewählten Win kelstellungen des Halsstücks (2) relativ zur Schaft- Längsachse vorgesehen sind.1.Hip joint endoprosthesis with a shaft ( 3 ) that can be anchored in the upper end of a thigh and tapers towards the lower end, at the upper end on the side of the hip joint a spherical joint head ( 1 ) mounted in a socket that can be implanted in the hip joint by an angle to the shaft extending neck portion (2) at a distance is provided, wherein the spherical joint head (1) carrying the neck piece (2) and the shaft (3) are separate parts, characterized in that
that the shaft-side end of the neck piece ( 2 ) is connected via an articulated connection to the hip-side end of the shaft ( 3 ) such that a change in the angular position of the neck piece ( 2 ) relative to the shaft longitudinal axis is adjustable, and
that blocking means are provided for fixing selected angular positions of the neck piece ( 2 ) relative to the longitudinal axis of the shaft.
dass das Unterteil (42) zum Oberteil (41) und zum kugel- oder kugelkalottenförmigen Einstellkopf (21) kom plementär geformte Anlageflächen (45) aufweist,
dass das Oberteil über ein Gewinde (32) mit dem Gelenkschaft (3) formschlüssig verbunden ist und die zur reibschlüssigen Fixierung benötigte Anpresskraft in axialer Richtung auf das Unterteil (42) aufbringt.3. hip joint endoprosthesis according to claim 2, characterized in that the blocking device consists of a two-part blocking ring with an upper part ( 41 ) and a lower part ( 42 ),
that the lower part ( 42 ) has complementary shaped contact surfaces ( 45 ) to the upper part ( 41 ) and to the spherical or spherical cap-shaped adjusting head ( 21 ),
that the upper part is positively connected to the joint shaft ( 3 ) by means of a thread ( 32 ) and applies the pressing force required for the frictional fixation to the lower part ( 42 ) in the axial direction.
dass der in der Hüftgelenkpfanne zu lagernde kugel förmige Kopf (1) mit einem mit dem Gewinde (18) des Halsstücks 12 korrespondierenden Innengewinde (12) ver sehen ist,
dass Sicherungsmittel vorgesehen sind, die das unbe absichtigte Verdrehen des Kugelkopfes (1) gegenüber dem Halsstück (2) verhindern.7. Hip joint endoprosthesis according to one of claims 1 to 6, characterized in that the neck piece ( 2 ) has an external thread ( 12 ) on the hip joint side for length adjustment,
that the spherical head ( 1 ) to be supported in the acetabular cup is provided with an internal thread ( 12 ) corresponding to the thread ( 18 ) of the neck piece 12 ,
that securing means are provided which prevent the ball head ( 1 ) from being inadvertently rotated relative to the neck piece ( 2 ).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19951141A DE19951141A1 (en) | 1999-10-23 | 1999-10-23 | Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19951141A DE19951141A1 (en) | 1999-10-23 | 1999-10-23 | Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head |
Publications (1)
Publication Number | Publication Date |
---|---|
DE19951141A1 true DE19951141A1 (en) | 2001-05-10 |
Family
ID=7926670
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19951141A Withdrawn DE19951141A1 (en) | 1999-10-23 | 1999-10-23 | Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE19951141A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003065939A1 (en) * | 2002-02-08 | 2003-08-14 | Portland Orthopaedics Pty Ltd | Modular prosthesis assembly including tapered adjustments |
DE10252123B3 (en) * | 2002-11-05 | 2004-07-22 | Eska Implants Gmbh & Co. | Set for creating an artificial hip joint |
EP1550420A2 (en) | 2003-12-30 | 2005-07-06 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
JP2006187622A (en) * | 2004-12-29 | 2006-07-20 | Depuy Products Inc | System and method for replicating orthopaedic implant orientation |
WO2007113607A1 (en) * | 2006-04-05 | 2007-10-11 | Mariasal Investment N.V. | Assembly consisting of head and movable neck for preparing the implantation of an artificial hip |
US8002838B2 (en) | 2008-06-11 | 2011-08-23 | Depuy Products, Inc. | Joint prosthesis with positionable head |
ITMI20110121A1 (en) * | 2011-02-01 | 2012-08-02 | Ala Ortho S R L | IMPROVED MODULAR NECK, PARTICULARLY FOR HIP PROSTHESIS. |
US8273093B2 (en) | 2004-06-29 | 2012-09-25 | Depuy Products, Inc. | Instrumentation for recording and replicating orthopaedic implant orientation |
US8444698B2 (en) | 2004-12-29 | 2013-05-21 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
US8679185B2 (en) | 2005-09-30 | 2014-03-25 | DePuy Synthes Products, LLC | Joint prosthesis with positionable head |
-
1999
- 1999-10-23 DE DE19951141A patent/DE19951141A1/en not_active Withdrawn
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003065939A1 (en) * | 2002-02-08 | 2003-08-14 | Portland Orthopaedics Pty Ltd | Modular prosthesis assembly including tapered adjustments |
DE10252123B3 (en) * | 2002-11-05 | 2004-07-22 | Eska Implants Gmbh & Co. | Set for creating an artificial hip joint |
US8419798B2 (en) | 2003-12-30 | 2013-04-16 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
EP1550420A2 (en) | 2003-12-30 | 2005-07-06 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
JP2005193045A (en) * | 2003-12-30 | 2005-07-21 | Depuy Products Inc | Joint prosthesis with head to have unlimited potential of positioning |
EP1550420A3 (en) * | 2003-12-30 | 2005-08-17 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
JP4658591B2 (en) * | 2003-12-30 | 2011-03-23 | デピュイ・プロダクツ・インコーポレイテッド | Joint prosthesis with an infinitely positionable head |
US8968327B2 (en) | 2004-06-29 | 2015-03-03 | DePuy Synthes Products, LLC | Instrumentation for recording and replicating orthopaedic implant orientation |
US8808306B2 (en) | 2004-06-29 | 2014-08-19 | DePuy Synthes Products, LLC | Instrumentation for recording and replicating orthopaedic implant orientation |
US8585711B2 (en) | 2004-06-29 | 2013-11-19 | DePuy Synthes Products, LLC | Instrumentation for recording and replicating orthopaedic implant orientation |
US8273093B2 (en) | 2004-06-29 | 2012-09-25 | Depuy Products, Inc. | Instrumentation for recording and replicating orthopaedic implant orientation |
US8444698B2 (en) | 2004-12-29 | 2013-05-21 | Depuy Products, Inc. | Joint prosthesis with infinitely positionable head |
US9132012B2 (en) | 2004-12-29 | 2015-09-15 | DePuy Synthes Products, Inc. | Joint prosthesis with infinitely positionable head |
US8460390B2 (en) | 2004-12-29 | 2013-06-11 | Depuy Products, Inc. | System and method for replicating orthopaedic implant orientation |
US8562686B2 (en) | 2004-12-29 | 2013-10-22 | DePuy Synthes Products, LLC | Joint prosthesis with infinitely positionable head |
US11298233B2 (en) | 2004-12-29 | 2022-04-12 | DePuy Synthes Products, Inc. | Method of implanting joint prosthesis with infinitely positionable head |
US10828161B2 (en) | 2004-12-29 | 2020-11-10 | DePuy Synthes Products, Inc. | Method of implanting joint prosthesis with infinitely positionable head |
US9925047B2 (en) | 2004-12-29 | 2018-03-27 | DePuy Synthes Products, Inc. | Method of implanting joint prosthesis with infinitely positionable head |
JP2006187622A (en) * | 2004-12-29 | 2006-07-20 | Depuy Products Inc | System and method for replicating orthopaedic implant orientation |
US9913720B2 (en) | 2005-09-30 | 2018-03-13 | DePuy Synthes Products, Inc. | Joint prosthesis system with positionable head |
US9681954B2 (en) | 2005-09-30 | 2017-06-20 | DePuy Synthes Products, Inc. | Joint prosthesis system with positionable head |
US8679185B2 (en) | 2005-09-30 | 2014-03-25 | DePuy Synthes Products, LLC | Joint prosthesis with positionable head |
WO2007113607A1 (en) * | 2006-04-05 | 2007-10-11 | Mariasal Investment N.V. | Assembly consisting of head and movable neck for preparing the implantation of an artificial hip |
US8002838B2 (en) | 2008-06-11 | 2011-08-23 | Depuy Products, Inc. | Joint prosthesis with positionable head |
ITMI20110121A1 (en) * | 2011-02-01 | 2012-08-02 | Ala Ortho S R L | IMPROVED MODULAR NECK, PARTICULARLY FOR HIP PROSTHESIS. |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1642552B1 (en) | Endoprothesis for a metatarsophalangeal joint | |
DE19601340C1 (en) | Endoprosthesis for neck of femur for artificial hip joint | |
DE69233509T2 (en) | Cutter for oblong acetabulum | |
DE69721828T2 (en) | JOINT PROSTHESIS | |
EP1093777B1 (en) | Shoulder-endoprosthesis | |
EP0121491B1 (en) | Implant | |
EP0591594A1 (en) | Acetabular cup supporting ring | |
DE2535649A1 (en) | CERAMIC CAP PROSTHESIS | |
EP0808617B1 (en) | Saddle prosthesis | |
EP0636016B1 (en) | Shaft component for a joint endoprosthesis | |
EP1188422A2 (en) | Shoehorn prosthesis | |
EP0390883B1 (en) | Hip-joint prosthesis and use thereof | |
DE4442206A1 (en) | Joint prosthesis | |
DE112004001893B4 (en) | Conical joint prosthesis | |
EP1867303A1 (en) | Surface replacement prosthesis for the humerus head | |
CH664081A5 (en) | HIP PROSTHESIS. | |
DE3917285A1 (en) | Shoulder prosthesis - has condyle and acetabulum made of specified material | |
EP1168989B1 (en) | Condyle prosthesis and kit for producing same | |
DE8915887U1 (en) | Femoral head-stem prosthesis | |
DE19951141A1 (en) | Hip joint endoprosthesis has shaft, neck-piece, link connection and spherical bone-head | |
CH664686A5 (en) | Elbow joint prosthesis - has head parts of prosthesis anchored in bone cavities by perforated tubes | |
DE10354601B3 (en) | Finger joint prosthesis comprises a ball-and-socket joint in which the rotatable part is a ball-like disk with a peripheral opening in which a distal shaft extension is borne in a movable manner | |
WO2013060718A1 (en) | Adapter for an implant and knee joint prosthesis | |
WO2008037480A2 (en) | Hip implant and module for a hip implant | |
EP0187881A1 (en) | Hip cup |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OR8 | Request for search as to paragraph 43 lit. 1 sentence 1 patent law | ||
8105 | Search report available | ||
8139 | Disposal/non-payment of the annual fee |