EP1381333A2 - Systeme pour cavite cotyloide - Google Patents

Systeme pour cavite cotyloide

Info

Publication number
EP1381333A2
EP1381333A2 EP02732639A EP02732639A EP1381333A2 EP 1381333 A2 EP1381333 A2 EP 1381333A2 EP 02732639 A EP02732639 A EP 02732639A EP 02732639 A EP02732639 A EP 02732639A EP 1381333 A2 EP1381333 A2 EP 1381333A2
Authority
EP
European Patent Office
Prior art keywords
acetabular
implant
acetabular implant
spacer
cup system
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Withdrawn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
EP02732639A
Other languages
German (de)
English (en)
Inventor
R. Windhager
W. Winkelmann
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.)
Implantcast GmbH
Original Assignee
Implantcast GmbH
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 Implantcast GmbH filed Critical Implantcast GmbH
Publication of EP1381333A2 publication Critical patent/EP1381333A2/fr
Withdrawn legal-status Critical Current

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
    • A61F2/30721—Accessories
    • 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
    • A61F2/30734—Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
    • 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
    • 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
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30724—Spacers for centering an implant in a bone cavity, e.g. in a cement-receiving cavity
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30942—Designing or manufacturing processes for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
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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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    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
    • A61F2002/30387—Dovetail connection
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    • 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
    • A61F2002/30433—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/30495—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking ring
    • A—HUMAN NECESSITIES
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
    • A61F2002/305—Snap 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
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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
    • A61F2002/30517—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a locking plate
    • 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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    • A61F2002/30316—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
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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    • A61F2/02—Prostheses implantable into the body
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    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2002/3241—Joints for the hip having a ring, e.g. for locking the femoral head into the acetabular cup
    • 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
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • 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
    • A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
    • A61F2002/3403—Polar aperture
    • 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
    • A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
    • A61F2002/3459—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped made of different partially-spherical portions
    • 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
    • A61F2002/348—Additional features
    • A61F2002/3482—Two hemispherical halves having completely different structures
    • 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
    • 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
    • A61F2220/0041—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements using additional screws, bolts, dowels or rivets, e.g. connecting screws
    • 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

Definitions

  • the invention relates to an acetabular cup system which can be used in particular for the reconstruction of the acetabular region after removal of a loosened artificial acetabular cup with more or less pronounced bone defects.
  • the acetabular cup system according to the invention has a hemispherical acetabular implant, from the edge of which at least one groove extends, which runs transversely to the edge in the wall of the acetabular implant and is accessible from the outside of the acetabular implant. Furthermore, at least one spacer is provided, which has a projection which fits into the groove and whose outside in the region of the projection is matched to the outer contour of the acetabular implant in the region of the groove.
  • the groove and the projection are set up for a positive connection, the groove preferably being designed as a dovetail groove (and the projection having a shape matched to it).
  • the protrusion of the spacer can be inserted into the groove from the edge of the acetabular implant. If the
  • Spacer is connected to the acetabular implant, it forms a kind of larger projection for filling a bone end effets.
  • Remaining cavities between the implant and the patient's bone are grown through by tissue or can optionally be filled in in a conventional manner, for example with bone cement; however, because of the high quality of the spacer, there are far fewer follow-up problems than with conventional methods.
  • a plurality of spacers of the same and / or different shape and / or size are provided.
  • the acetabular cup system is a modular system that allows the prosthesis to be individually adapted to the given situation during the operation.
  • an optimal anchoring and thus a permanent reconstruction can be achieved.
  • the spacers connected to the acetabular implant can be supported in places of good bone quality. If the remaining cavities are small enough due to the selection of suitable spacers, the use of bone cement or the like is even unnecessary. Tissues grow through these bone defects (biological reconstruction).
  • the acetabular cup system preferably has a securing device in order to secure a spacer connected to the acetabular implant against displacement.
  • the securing device can contain a plate which can be screwed onto the edge of the acetabular implant and which, with a projection, covers a spacer connected to the acetabular implant and can preferably be screwed to the spacer.
  • the size and shape of the projection of the plate is preferably matched to the end side of the spacer under consideration.
  • the system preferably contains several plates, which are provided with different arrangements of projections. It is advantageous if these plates extend over the entire edge of the acetabular cup extend implant, with the respective existing projections covering the spacers.
  • the acetabular implant has several grooves. These grooves can be distributed over the entire outside of the acetabular implant. As a rule, however, it is sufficient if the acetabular implant has several grooves in the area to be positioned facing away from the patient's seat and pubic bone, since this zone is most susceptible to bone defects.
  • the acetabular implant can have at least one opening or bore through its wall for receiving a fastening element to be anchored in the patient's bone, preferably a bore in the center of the acetabular implant and a plurality of bores distributed around it.
  • the latter are preferably located at locations that are aligned with the patient's ischium and pubis after implantation.
  • the material for the acetabular implant and the spacers are e.g. Titanium or titanium alloys in question.
  • the inside of the acetabular implant can be made from a lining
  • polyolefin preferably made of a UHMW polyethylene
  • the acetabular cup system according to the invention thus allows adaptation to the individual situation of the patient and enables shorter operating times.
  • the surgical access route is smaller than when using conventional support shells, which results in faster post-operative rehabilitation of the patient.
  • FIG. 1 shows a longitudinal section through an acetabular implant according to an embodiment of the acetabular cup system according to the invention with a spacer inserted
  • FIG. 2 shows a cross section through the wall of the acetabular implant in the area of the plane marked II-II in FIG. 1,
  • FIG. 3 shows a top view of the acetabular implant from FIG. 1, to which a total of three spacers are attached,
  • FIG. 4 shows a plan view of a spacer
  • Figure 5 is a plan view of a spacer with a different shape
  • Figure 6 is a plan view of a plate which can be screwed onto the edge of the acetabular implant.
  • FIG. 1 shows an acetabular implant 2 of the acetabular cup system in a longitudinal section.
  • the sectional plane runs through the axis II drawn in FIG. 3.
  • Implant 2 is designed like a hemisphere and has an outer side 4, an inner side 6, an edge 8 and a wall 10.
  • a groove 12 is milled into the wall 10, see also FIG. 2.
  • the groove 12 is designed as a dovetail groove, i.e. it has a trapezoidal cross section.
  • the axis of the groove 12 runs in the paper plane of FIG. 1.
  • two further identical grooves are provided in the exemplary embodiment.
  • a larger number of grooves, which are arranged distributed over the periphery of the edge 8, is also conceivable.
  • the grooves are used to attach spacers, as explained in more detail below.
  • the acetabular implant 2 In its center, the acetabular implant 2 has an opening or bore 14, see FIGS. 1 and 3. In the exemplary embodiment, the acetabular implant 2 contains two further bores 16 and 17, see FIG. 3. The bore 14 and the bores 16 and 17 are to accommodate fasteners such as Bone screws determined, with the help of which the acetabular implant 2 is anchored in the bone of a patient.
  • the acetabular implant 2 is preferably used in such a way that the bores 16 and 17 point toward the patient's ischium and pubis, since the fastening elements in these bones generally hold well.
  • a further bore is provided in the region of the lower end of the groove 12, that is to say approximately halfway between the edge 8 and the central bore 14.
  • the inside 6 of the acetabular implant 2 is provided with a lining made of UHMW polyethylene (polyethylene with a particularly high molecular weight). This is a common measure for hip joint implants that reduces the friction between the acetabular implant and the joint head.
  • UHMW polyethylene polyethylene with a particularly high molecular weight
  • Spacers 20, 20 'and 20 are a further component of the acetabular cup system.
  • the surgeon preferably has spacers of various shapes and sizes to choose from, so that during the operation he selects one or more spacers and connects them to the acetabular implant 2 can, as explained below with reference to the spacer 20.
  • the spacers 20, 20 'and 20 are used to fill in bone defects.
  • the spacer 20 (see also FIG. 4) has a projection 22 which, in the exemplary embodiment, is designed like a dovetail and fits into the groove 12 or one of the other grooves on the acetabular implant 2.
  • the outer side 24 of the spacer 20 is adapted in the region of the projection 22 to the outer contour of the acetabular implant 2 in the region of the groove 12 (or the other grooves).
  • FIG. 1 illustrates the final position of the spacer 20 on the acetabular implant 2.
  • the end face 26 of the spacer 20 is aligned with the edge 8 in one plane.
  • the connection produced by the projection 22 engaging in the groove 12 is form-fitting and therefore very stable.
  • the spacer 20 is provided with a threaded bore 28 on the end face 26.
  • the spacer 20 ' is shown in plan view of its end face 26'.
  • the spacer 20 ' has the same components as the spacer 20, i.e. a projection 22' and an outer side 24 ', the shape of which corresponds to the projection 22 and the outer side 24 of the spacer 20, but otherwise a different basic shape, see also Figure 3.
  • Figure 3 also shows that the spacer 20 "is constructed in mirror image of the spacer 20 '.
  • spacers 20, 20 '20 shown in the figures, many other shapes and sizes of spacers are conceivable.
  • the surgeon preferably has a larger number of spacers to choose from during the operation, so that he can individually select the suitable spacers and adapt them to the Surgery can combine with the acetabular implant 2.
  • FIG. 6 shows a plate 30 in a top view.
  • the plate 30 has three projections 32, 32 'and 32 "and a total of seven through bores 34. It serves as a securing device to prevent the spacers 20, 20', 20" connected to the acetabular implant 2 from shifting.
  • the shape of the plate 30 is matched to the shape of the edge 8 and the shape of the end faces of the spacers 20, 20 ', 20 ".
  • the holes 34 allow screws to be inserted into the threaded holes 18 and 28, 28' and the corresponding threaded hole on the Spacer 20 "can be screwed in.
  • the shape of the projections 32, 32 'and 32 "of the plate 30 shown in FIG. 6 corresponds to the shapes of the end faces 26, 26' and that of the spacer 20".
  • the acetabular cup system includes other plates to choose from where the protrusions correspond to a different selection or configuration of spacers.
  • An advantageous material for the acetabular implant 2 is titanium or a titanium alloy.
  • the spacers are preferably made of the same material.
  • the plate 30 can also be made from this material.

Abstract

L'invention concerne un système pour cavité cotyloïde comprenant un implant de cavité cotyloïde (2) hémisphérique et au moins un écarteur (20, 20', 20''). Au moins une encoche part du bord (8) de l'implant de cavité cotyloïde (2), s'étend transversalement au bord (8) dans la paroi dudit implant et est accessible par le côté extérieur (4) de l'implant de cavité cotyloïde (2). L'écarteur (20, 20', 20'') présente une saillie (22) qui s'emboîte dans ladite encoche. Le contour extérieur de la saillie (22) de l'écarteur correspond au contour extérieur de l'encoche pratiquée dans l'implant de cavité cotyloïde (2).
EP02732639A 2001-04-18 2002-04-16 Systeme pour cavite cotyloide Withdrawn EP1381333A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10118985 2001-04-18
DE10118985A DE10118985C2 (de) 2001-04-18 2001-04-18 Hüftgelenkpfannen-System
PCT/EP2002/004297 WO2002083035A2 (fr) 2001-04-18 2002-04-16 Systeme pour cavite cotyloide

Publications (1)

Publication Number Publication Date
EP1381333A2 true EP1381333A2 (fr) 2004-01-21

Family

ID=7681839

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02732639A Withdrawn EP1381333A2 (fr) 2001-04-18 2002-04-16 Systeme pour cavite cotyloide

Country Status (3)

Country Link
EP (1) EP1381333A2 (fr)
DE (1) DE10118985C2 (fr)
WO (1) WO2002083035A2 (fr)

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GB0313444D0 (en) 2003-06-11 2003-07-16 Midland Medical Technologies L Modular dysplasia cup
US7993408B2 (en) 2008-02-12 2011-08-09 Biomet Manufacturing Corp. Acetabular cup having an adjustable modular augment
DE102009024844B4 (de) * 2009-06-09 2012-12-06 Dot Gmbh Stabilisierungselement und Pfannenimplantat für die Hüftgelenkendoprothetik
CN104105459B (zh) 2011-12-07 2018-10-30 史密夫和内修有限公司 具有凹陷的凹坑的整形外科增强物
AU2012347730B2 (en) 2011-12-07 2017-08-31 Smith & Nephew, Inc. Orthopedic implant augments
US11589994B2 (en) 2016-07-08 2023-02-28 Biomet Manufacturing, Llc Augments, systems and methods for acetabular implants
CN106983584A (zh) * 2017-04-24 2017-07-28 北京爱康宜诚医疗器材有限公司 髋臼杯组件

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US2947308A (en) * 1956-11-02 1960-08-02 Harry A Gorman Hip joint prosthesis
EP0337513B1 (fr) * 1984-04-14 1991-12-11 HOWMEDICA INTERNATIONAL, INC. Zweigniederlassung Kiel Cupule acetabulaire prothétique
US4681589A (en) * 1984-06-01 1987-07-21 Tronzo Raymond G Adjustable acetabular cup prosthesis as part of a total cup replacement system
FR2595941A1 (fr) * 1986-03-21 1987-09-25 Perrin Max Cotyle auto-bloquant pour prothese cotyloidienne, notamment pour prothese coxo-femorale
DE3620460C1 (en) * 1986-06-18 1987-10-08 Buse Harry Socket for an endoprosthesis, especially for hip endoprostheses
DE9014542U1 (fr) * 1990-10-20 1991-01-03 Howmedica Gmbh, 2314 Schoenkirchen, De
US5326368A (en) * 1992-09-22 1994-07-05 Howmedica, Inc. Modular acetabular cup
DE4337936A1 (de) * 1993-11-06 1995-05-11 Cerasiv Gmbh Sphärische Hüftgelenkpfanne
DE19730073C1 (de) * 1997-07-14 1999-07-15 Jansson Volkmar Priv Doz Dr Me Endoprothesensystem
FR2775586B1 (fr) * 1998-03-03 2000-06-30 Tornier Sa Implant acetabulaire ou cotyloidien modulaire
DE29910237U1 (de) * 1999-06-12 1999-08-12 Aesculap Ag & Co Kg Gelenkpfanne
DE19943225A1 (de) * 1999-09-09 2001-03-15 Franz Copf Kugelpfannen-Prothesenteil für eine Hüftgelenksprothese sowie Verfahren zu seiner Herstellung

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See references of WO02083035A2 *

Also Published As

Publication number Publication date
WO2002083035A2 (fr) 2002-10-24
DE10118985A1 (de) 2002-11-21
DE10118985C2 (de) 2003-06-26
WO2002083035A3 (fr) 2003-01-23

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