DE19746997A1 - Cementless titanium receiving member for joints - Google Patents

Cementless titanium receiving member for joints

Info

Publication number
DE19746997A1
DE19746997A1 DE19746997A DE19746997A DE19746997A1 DE 19746997 A1 DE19746997 A1 DE 19746997A1 DE 19746997 A DE19746997 A DE 19746997A DE 19746997 A DE19746997 A DE 19746997A DE 19746997 A1 DE19746997 A1 DE 19746997A1
Authority
DE
Germany
Prior art keywords
polyethylene
recess
acetabular
acetabular cup
inserts
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19746997A
Other languages
German (de)
Inventor
Peter Brehm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19746997A priority Critical patent/DE19746997A1/en
Publication of DE19746997A1 publication Critical patent/DE19746997A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/10—Ceramics or glasses
    • 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
    • A61F2/34—Acetabular cups
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/02—Inorganic materials
    • A61L27/04—Metals or alloys
    • A61L27/06—Titanium or titanium alloys
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L27/00—Materials for grafts or prostheses or for coating grafts or prostheses
    • A61L27/14—Macromolecular materials
    • A61L27/16—Macromolecular materials obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30744—End caps, e.g. for closing an endoprosthetic cavity
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30138—Convex polygonal shapes
    • A61F2002/30143—Convex polygonal shapes hexagonal
    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A61F2002/30345—Multiple conical connection, i.e. the protrusion and recess having several tapered sections of different complementary conicities
    • 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
    • A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
    • A61F2002/30364—Rotation about the common longitudinal axis
    • A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—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
    • A61F2002/30403—Longitudinally-oriented cooperating ribs and grooves on mating lateral surfaces of a mainly longitudinal connection
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30405—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
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30477—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using sharp protrusions, e.g. spikes, for anchoring into connecting prosthetic part
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • 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
    • A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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    • A61F2/32—Joints for the hip
    • A61F2/34—Acetabular cups
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    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
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    • 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
    • A61F2002/4638—Tools for performing screwing, e.g. nut or screwdrivers, or particular adaptations therefor
    • A—HUMAN NECESSITIES
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
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    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
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    • 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
    • A61F2250/0058—Additional features; Implant or prostheses properties not otherwise provided for
    • A61F2250/006—Additional features; Implant or prostheses properties not otherwise provided for modular
    • A61F2250/0062—Kits of prosthetic parts to be assembled in various combinations for forming different 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00179—Ceramics or ceramic-like structures
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2430/00—Materials or treatment for tissue regeneration
    • A61L2430/24—Materials or treatment for tissue regeneration for joint reconstruction

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Veterinary Medicine (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Medicinal Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Ceramic Engineering (AREA)
  • Cardiology (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Prostheses (AREA)

Abstract

The cementless titanium acetabulum pan member can hold a joint bearing insert made of a ceramic, polyethylene or dysplasia insert. It has a closure screw (8) under the hip joint pan (1). The screw has a cutout for inserting a tool, especially a six-sided member, and the cutout can also accommodate an attachment on the polyethylene insert.

Description

Die Erfindung richtet sich auf eine zementlose Acetabulumpfanne aus Ti­ tan oder Titanlegierungen, in welche Gelenklager-Einsätze aus Keramik, Polyäthylen bzw. Dysplasie-Einsätze aus Polyäthylen intraoperativ wahl­ weise einsetzbar und dort festlegbar sind.The invention is directed to a cementless acetabulum pan made of Ti tan or titanium alloys, in which spherical plain bearing inserts made of ceramic, Polyethylene or dysplasia inserts made of polyethylene intraoperatively choice can be used wisely and fixed there.

Derartige Pfannen weisen im Polbereich eine Öffnung auf, die es ermög­ licht, ein Instrument zu fixieren, um die Pfanne in das Acetabulum einzu­ setzen. Darüber hinaus können seitlich noch Schraubenöffnungen für Befe­ stigungsschrauben und Befestigungsnägel vorgesehen sein, die insbesonde­ re eine drehfeste Befestigung der Pfanne ermöglichen.Such pans have an opening in the pole area which makes it possible light to fix an instrument to insert the pan into the acetabulum put. In addition, screw openings for Befe set screws and fastening nails are provided, in particular re enable a non-rotatable attachment of the pan.

Als Gelenklager dienen Einsätze aus Polyäthylen oder Keramik, welche vom Operateur je nach den spezifischen Gegebenheiten ausgewählt werden können.Inserts made of polyethylene or ceramic serve as spherical bearings selected by the surgeon according to the specific circumstances can.

Zum Ausgleich von Pfannensteilstellungen gibt es darüber hinaus Dyspla­ sie-Einsätze aus Polyäthylen, die einen schräg zur Mittellängsachse verlau­ fenden Rand aufweisen, also nicht rotationssymmetrisch ausgebildet sind.There is also Dyspla to compensate for partial pan positions sie inserts made of polyethylene, which are oblique to the central longitudinal axis Fenden edge have, so are not rotationally symmetrical.

Insbesondere bei derartigen Dysplasie-Einsätzen ist es außerordentlich wichtig, daß diese einerseits in einer exakten Ausrichtung befestigt werden und andererseits in dieser eingesetzten Position zuverlässig drehgesichert gehalten werden, da sonst die Gefahr besteht, daß erheblichen Schaden verursachende Kräfte auftreten. It is extraordinary in particular with such dysplasia operations it is important that these are attached in an exact orientation and on the other hand, reliably locked against rotation in this used position are kept, otherwise there is a risk of considerable damage causing forces occur.  

Hiervon ausgehend liegt der Erfindung die Aufgabe zugrunde, eine Aceta­ bulumpfanne der eingangs genannten Art so auszugestalten, daß sie in­ traoperativ die freie Auswahl von entsprechenden geeigneten Einsätzen ermöglicht, daß dabei aber absolut sichergestellt wird, daß die Einsätze zuverlässig zentriert und drehgesichert festgelegt sind.Proceeding from this, the object of the invention is an aceta bulumpanne of the type mentioned in such a way that they in traoperatively, the free selection of appropriate operations makes it possible to ensure absolutely that the stakes are reliably centered and secured against rotation.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß an der Unterseite der Hüftgelenkpfanne eine Verschlußschraube einschraubbar ist, welche eine Ausnehmung zur Einführung eines Werkzeuges, insbesondere eines Sechskants, derart aufweist, daß die Öffnung gleichzeitig zur Aufnahme eines zapfenartigen Ansatzes an dem jeweiligen Polyäthylen-Einsatz und zu dessen Zentrierung verwendbar ist.This object is achieved in that on the bottom a screw can be screwed into the acetabular cup, which a recess for the introduction of a tool, in particular one Hexagon, such that the opening at the same time for receiving a cone-like approach to the respective polyethylene insert and can be used to center it.

Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungs­ beispiels in Verbindung mit der Zeichnung näher erläutert. Dabei zeigen:The invention is described below on the basis of a preferred embodiment example explained in connection with the drawing. Show:

Fig. 1 einen Schnitt durch eine erfindungsgemäße Acetabulumpfanne aus Titan oder einer Titanlegierung, Fig. 1 shows a section through an inventive acetabular socket of titanium or a titanium alloy,

Fig. 2 eine Aufsicht auf diese Pfanne nach Fig. 1, Fig. 2 is a plan view of this cup according to Fig. 1,

Fig. 3 einen Schnitt durch einen Dysplasie-Einsatz aus Polyäthylen, Fig. 3 shows a section through a dysplasia insert made of polyethylene

Fig. 4 einen Schnitt durch einen normalen Polyäthylen-Einsatz, Fig. 4 shows a section through a normal-use polyethylene,

Fig. 5 einen Schnitt durch einen Keramik-Einsatz und Fig. 5 shows a section through a ceramic insert and

Fig. 6 eine Seitenansicht einer Verschlußschraube. Fig. 6 is a side view of a screw plug.

In Fig. 1 und 2 ist eine Acetabulumpfanne 1 dargestellt, welche eine Innen­ ausnehmung 2 zur Aufnahme eines Einsatzes 3 aufweist. Die Innenwand der Ausnehmung 2 wird gebildet durch einen ersten Konusabschnitt 4 und einen zweiten, konusähnlichen Abschnitt 5.In Fig. 1 and 2, an acetabular socket 1 is shown, which recess an inner 2 for receiving an insert 3 has. The inner wall of the recess 2 is formed by a first cone section 4 and a second, cone-like section 5 .

Im Bereich des Boden bzw. des Pols der Acetabulumpfanne 1 ist eine Aus­ nehmung 6 für einen Befestigungsschraube bzw. einen Befestigungsnagel vorgesehen, die ein Innengewinde 7 zur Befestigung einer Verschluß­ schraube 8 aufweist.In the area of the bottom or the pole of the acetabular cup 1 , a recess 6 is provided for a fastening screw or a fastening nail, which has an internal thread 7 for fastening a closure screw 8 .

Die Verschlußschraube 8 ist mit einem in der Zeichnung nicht dargestellten Innensechskant versehen, so daß die Verschlußschraube mit einem imbus­ schlüsselartigen Werkzeug eingesetzt werden kann, wobei die Sechskan­ tausnehmung gleichzeitig auch noch dazu dient, einen Zapfen 9 mit ent­ sprechender Außenkonfiguration am Boden 10 der Einsätze 3 aufzunehmen und dadurch den jeweiligen Einsatz zu zentrieren.The locking screw 8 is provided with a hexagon socket, not shown in the drawing, so that the locking screw can be used with an Allen key-like tool, the hexagon recess also being used at the same time, a pin 9 with a corresponding external configuration on the bottom 10 of the inserts 3 to record and thereby center the respective application.

Im Bereich des konusartigen Abschnitts 5 der Acetabulumpfanne 1 sind noch zwei weitere Ausnehmungen 11 für Befestigungsschrauben vorgese­ hen.In the area of the cone-like section 5 of the acetabular cup 1 , two further recesses 11 are provided for fastening screws.

In den Fig. 3 bis 5 sind Einsätze 3 dargestellt, die in die Ausnehmung 2 der Acetabulumpfanne 1 eingesetzt werden. Jeder der Einsätze 3 weist eine kugelkalottenförmige Lagerausnehmung 12 auf. In FIGS. 3 to 5 inserts 3 are shown, which are inserted into the recess 2 the acetabular socket. 1 Each of the inserts 3 has a spherical cap-shaped bearing recess 12 .

Bei dem in Fig. 3 dargestellten Dysplasie-Polyäthylen-Einsatz 3a ist zum Ausgleich von Schiefstellungen der obere Rand 13a schräg zur Mittellängs­ achse verlaufend ausgebildet, d. h. dieser Einsatz 3a ist nicht rotationssym­ metrisch. Der Einsatz 3a ist aus Polyäthylen hergestellt.In the dysplasia-polyethylene insert 3 a shown in FIG. 3, the upper edge 13 a is formed obliquely to the central longitudinal axis to compensate for misalignments, ie this insert 3 a is not rotationally symmetrical. The insert 3 a is made of polyethylene.

Der in Fig. 4 dargestellte Polyäthylen-Einsatz 3b weist einen gleichmäßig hohen Rand 13b auf, ebenso wie der Rand 13c des aus Keramik herge­ stellten, in Fig. 5 veranschaulichten Einsatzes 3c.The polyethylene insert 3 b shown in FIG. 4 has a uniformly high edge 13 b, as does the edge 13 c of the insert 3 c shown in FIG. 5 illustrated in ceramic.

Dieser in Fig. 5 dargestellte Einsatz 3c weist einen ebenen Boden 14 auf, wohingegen an der Unterseite der Polyäthylen-Einsätze 3a und 3b zylin­ derabschnittförmige Einsätze 15a und 15b vorgesehen sind, welche jeweils durch eine Ringnut 16a und 16b von dem zentralen Ansatz 9 getrennt sind, so daß der zylinderabschnittförmige Ansatz 15a bzw. 15c nach innen ge­ drückt werden kann.This insert 3 c shown in Fig. 5 has a flat bottom 14 , whereas on the underside of the polyethylene inserts 3 a and 3 b zylin derabschnittformen inserts 15 a and 15 b are provided, each by an annular groove 16 a and 16 b are separated from the central approach 9 , so that the cylindrical section-shaped approach 15 a or 15 c can be pressed inwards.

Aus der Gegenüberstellung von Fig. 1, 2 und 4 wird deutlich, daß im Be­ reich des Bodens der Acetabulumpfanne 1 oberhalb der Befestigungs- Ausnehmung 6 eine Ausnehmung 17 größeren Durchmessers ausgebildet ist, in die die Ansätze 15a, 15b einsetzbar sind. In Verbindung mit Fig. 4 ist veranschaulicht, daß der Außendurchmesser der Ansätze 15a, 15b ein Übermaß a gegenüber der Ausnehmung 17 aufweist, so daß beim Einschla­ gen der Einsätze 3a, 3b die Außenwand der zylinderabschnittförmigen An­ sätze 15a, 15b nach innen gedrückt wird.From the comparison of Fig. 1, 2 and 4 it is clear that in the loading area of the bottom of the acetabular cup 1 above the mounting recess 6, a recess 17 of larger diameter is formed, in which the approaches 15 a, 15 b can be used. In connection with Fig. 4 it is illustrated that the outer diameter of the lugs 15 a, 15 b has an oversize a with respect to the recess 17 , so that when striking conditions of the inserts 3 a, 3 b, the outer wall of the cylindrical section-shaped sets 15 a, 15 b is pressed inwards.

An der Innenwand der Ausnehmung 17, welche in Kontakt ist mit der Au­ ßenwand der Ansätze 15a, 15b, sind doppellippenartige Vorsprünge 18 je­ weils 120° gegeneinander versetzt angeordnet, in welche sich beim Ein­ schlagen das Polyäthylen-Material der Ansätze 15a, 15b eingräbt, so daß eine absolut drehsichere Festlegung gewährleistet ist.On the inner wall of the recess 17 , which is in contact with the outer wall of the lugs 15 a, 15 b, double lip-like projections 18 are each offset 120 ° from one another, into which the polyethylene material of the lugs 15 a strike, 15 b digs in, so that an absolutely rotationally secure fixing is guaranteed.

Die Verschlußschraube kann eine Oberflächenrauhigkeit Rz 20 bis 60 µm aufweisen, um nach dem Einpressen eine größere Auszugskraft für das Insert zu erreichen, wobei hier gegenüber einer glatten Oberfläche bis um das 3fache erhöhte Werte erhalten werden.The screw plug can have a surface roughness R z of 20 to 60 μm in order to achieve a greater pull-out force for the insert after being pressed in, values which are increased by a factor of 3 compared to a smooth surface.

Claims (6)

1. Zementlose Acetabulumpfanne aus Titan, in welche Gelenklager- Einsätze aus Keramik, Polyäthylen bzw. Dysplasie-Einsätze aus Polyäthy­ len intraoperativ wahlweise einsetzbar und dort festlegbar sind, dadurch gekennzeichnet, daß an der Unterseite der Hüftgelenkpfanne (1) eine Ver­ schlußschraube (8) einschraubbar ist, welche eine Ausnehmung zur Einfüh­ rung eines Werkzeuges, insbesondere eines Sechskants derart aufweist, daß die Ausnehmung gleichzeitig zur Aufnahme eines zapfenartigen Ansatzes (9) an dem jeweiligen Polyäthylen-Einsatz (3) und zu dessen Zentrierung ausgebildet ist.1. Cementless acetabular socket made of titanium, in which spherical bearing inserts made of ceramic, polyethylene or dysplasia inserts made of polyethylene can optionally be used intraoperatively and fixed there, characterized in that on the underside of the acetabular cup ( 1 ) a locking screw ( 8 ) can be screwed in, which has a recess for introducing a tool, in particular a hexagon, in such a way that the recess is at the same time designed to receive a peg-like extension ( 9 ) on the respective polyethylene insert ( 3 ) and to center it. 2. Acetabulumpfanne nach Anspruch 1, dadurch gekennzeichnet, daß an der Innenseite der Acetabulumpfanne (1) oberhalb der Verschlußschraube (8) eine zylinderabschnittförmige Ausnehmung (16) ausgebildet ist und an der Unterseite der Polyäthylen-Einsätze ein zylinderförmiger Ansatz (15) vorgesehen ist, der gegenüber der zylinderförmigen Ausnehmung (17) leichtes Übermaß (a) aufweist und zur Festlegung aufgrund einer inneren Ringnut (16) verformbar ist.2. acetabular cup according to claim 1, characterized in that on the inside of the acetabular cup ( 1 ) above the locking screw ( 8 ) a cylindrical section-shaped recess ( 16 ) is formed and on the underside of the polyethylene inserts a cylindrical extension ( 15 ) is provided, which has a slight oversize (a) compared to the cylindrical recess ( 17 ) and is deformable due to an inner annular groove ( 16 ). 3. Acetabulumpfanne nach Anspruch 2, dadurch gekennzeichnet, daß an der Wand der zylinderförmigen Ausnehmung (17) der Acetabulumpfanne (1) schneidenartige Vorsprünge (18) zur Erzielung einer über 360° frei ein­ stellbaren Verdrehsicherung der Dysplasie-Einsätze vorgesehen sind.3. acetabular cup according to claim 2, characterized in that on the wall of the cylindrical recess ( 17 ) of the acetabular cup ( 1 ) cutting-like projections ( 18 ) to achieve an over 360 ° freely adjustable rotation of the dysplasia inserts are provided. 4. Acetabulumpfanne nach Anspruch 2, dadurch gekennzeichnet, daß die Vorsprünge (18) jeweils als ein Paar von Vorsprüngen (18) ausgebildet sind. 4. acetabular cup according to claim 2, characterized in that the projections ( 18 ) are each formed as a pair of projections ( 18 ). 5. Acetabulumpfanne nach Anspruch 3, dadurch gekennzeichnet, daß die Vorsprünge (18) voneinander einen vorgesehenen Winkelabstand von vor­ zugsweise 120° aufweisen.5. acetabular pan according to claim 3, characterized in that the projections ( 18 ) from one another have an intended angular distance of preferably 120 ° before. 6. Acetabulumpfanne nach Anspruch 2, dadurch gekennzeichnet, daß die Verschlußschraube (8) außen rauh ausgebildet ist, insbesondere eine Rau­ higkeit Rz 20-60 µm aufweist.6. acetabular pan according to claim 2, characterized in that the screw plug ( 8 ) is rough on the outside, in particular has a roughness R z 20-60 microns.
DE19746997A 1997-10-24 1997-10-24 Cementless titanium receiving member for joints Withdrawn DE19746997A1 (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1163891A1 (en) * 2000-06-17 2001-12-19 Biomet Merck Deutschland GmbH Closure element for endoprostheses system
FR2824258A1 (en) * 2001-05-04 2002-11-08 Groupe Lepine Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions
EP1336394A1 (en) * 2002-02-14 2003-08-20 LIMA Lto SpA Acetabular prosthesis of the hip
US8679187B2 (en) 2006-03-20 2014-03-25 Smith & Nephew, Inc. Acetabular cup assembly for multiple bearing materials
US9005302B2 (en) 2006-04-19 2015-04-14 Peter Brehm Gmbh Modular hip implant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1163891A1 (en) * 2000-06-17 2001-12-19 Biomet Merck Deutschland GmbH Closure element for endoprostheses system
DE10029637A1 (en) * 2000-06-17 2002-01-03 Biomet Merck Deutschland Gmbh endoprosthesis
DE10029637C2 (en) * 2000-06-17 2002-04-11 Biomet Merck Deutschland Gmbh endoprosthesis
FR2824258A1 (en) * 2001-05-04 2002-11-08 Groupe Lepine Cup implant, for a hip replacement prosthesis, has a dome with an inner cavity in a truncated cone shape to take a structured sliding core of ceramic or polymer material without increasing its dimensions
EP1336394A1 (en) * 2002-02-14 2003-08-20 LIMA Lto SpA Acetabular prosthesis of the hip
US8679187B2 (en) 2006-03-20 2014-03-25 Smith & Nephew, Inc. Acetabular cup assembly for multiple bearing materials
US9005302B2 (en) 2006-04-19 2015-04-14 Peter Brehm Gmbh Modular hip implant

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