WO2001035873A1 - Prothese cotyloidienne expansible a double mobilite - Google Patents
Prothese cotyloidienne expansible a double mobilite Download PDFInfo
- Publication number
- WO2001035873A1 WO2001035873A1 PCT/FR2000/003115 FR0003115W WO0135873A1 WO 2001035873 A1 WO2001035873 A1 WO 2001035873A1 FR 0003115 W FR0003115 W FR 0003115W WO 0135873 A1 WO0135873 A1 WO 0135873A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acetabulum
- intermediate element
- prosthesis according
- teeth
- cup
- Prior art date
Links
Classifications
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2/32—Joints for the hip
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
- A61F2002/30362—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit with possibility of relative movement between the protrusion and the recess
- A61F2002/30364—Rotation about the common longitudinal axis
- A61F2002/30367—Rotation about the common longitudinal axis with additional means for preventing said rotation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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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
- A61F2002/30329—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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
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- 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
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- A—HUMAN NECESSITIES
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- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
- A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
- A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30535—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
- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
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- A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
-
- 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
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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
- A61F2002/30579—Special structural features of bone or joint prostheses not otherwise provided for with mechanically expandable devices, e.g. fixation devices
-
- 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
- A61F2002/30594—Special structural features of bone or joint prostheses not otherwise provided for slotted, e.g. radial or meridian slot ending in a polar aperture, non-polar slots, horizontal or arcuate slots
-
- A—HUMAN NECESSITIES
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- A61F2/02—Prostheses implantable into the body
- A61F2/30—Joints
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- A61F2/02—Prostheses implantable into the body
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- A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
- A61F2002/30841—Sharp anchoring protrusions for impaction into the bone, e.g. sharp pins, spikes
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- A—HUMAN NECESSITIES
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- A61F2/02—Prostheses implantable into the body
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- A61F2002/30891—Plurality of protrusions
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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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- 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
- A61F2002/3462—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having a frustoconical external shape, e.g. entirely frustoconical
-
- 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
- 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
- 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
-
- 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
-
- 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
- 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
- A61F2310/00389—The prosthesis being coated or covered with a particular material
- A61F2310/00592—Coating or prosthesis-covering structure made of ceramics or of ceramic-like compounds
- A61F2310/00796—Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite
Definitions
- the present invention relates to an expandable acetabular prosthesis with dual mobility.
- the technical sector of the invention is the field of the production of surgical materials implantable in the human body.
- the main application of the invention is the production of hip prosthesis to replace the iliac cavity of the hip bone, the assembly having to be anchored without cement.
- Total hip prostheses have two elements: 1.
- the femoral stem this part replaces the head and neck of the femur.
- a rod an extension of the neck, anchors it in the femoral bone, with or without cement.
- the acetabulum it replaces the bony acetabulum and is articulated with the prosthetic femoral head.
- This element can be made of a single piece of metal, polyethylene or ceramic.
- many models consist of the following two elements: a) a metal cup fixed in the bone, b) a plastic insert, in particular polyethylene, fixed in the cup and articulated with the prosthetic head.
- sealing consists in interposing an acrylic type cement between the bone and the cup, which is anchored in the bone and ensures the fixation of the part.
- force impaction consists in entering in force (“press-fit") the metal cup in a bone cavity prepared using hemispherical burrs, which calibrate the acetabulum to a diameter slightly smaller than that of the cup metallic.
- a coating or surface roughness located on the outer surface of this cup improve the immediate mechanical strength of the cup and allow secondary holding by bone regrowth. But this initial mechanical behavior is random because it depends for a lot on the method of preparation of the bone, and especially on its hardness. Most models therefore offer an additional attachment, recommended in cases where the "press-fit" holding is considered insufficient. This fixation is ensured by screws which are placed in the bone through holes arranged in the metal cup.
- the screwing of the acetabulum consists of using a metal cup having a thread on its outer surface, which thread is screwed into the bone. This method of fastening is currently little used because the positioning of the part, during installation, is random. In fact, press-fit or screwed cups cannot be placed precisely because their positioning can be deflected by the bone during placement.
- a metal cup is used which is designed so as to be opened by a metallic or polyethylene intermediate element between the cup and the insert, such as a ring.
- acetabular prostheses fixed by expansion comprising three elements which are: - An artificial cup consisting of a cup provided with expansion slots which are symmetrically and regularly distributed angularly around its periphery and which determine segments or portions of sector of spherical cap; - A threaded intermediate element which is: a) a ring intended to be screwed into the acetabulum, as described in patent application EP 486 403, or b) an intermediate core which comprises a threaded finger forming an appendage on its pole and which cooperates with a tapped hole in the artificial cup, as described in patent application FR 2 700 946;
- the present invention relates to expandable acetabular prostheses with three elements, as described above. More particularly, the present invention relates to acetabular prostheses with three elements substantially in the form of a spherical cap.
- the acetabulum is fixed by screws, and does not provide good overall stability either: the parts of the prosthesis indeed retain a certain mobility and elasticity which are also incompatible with good resistance over time.
- the present invention aims to overcome these drawbacks in particular, the present invention aims to provide a prosthesis having:. improved mechanical strength,. easier and more precise placement in bone quality,
- the subject of the present invention is an acetabular prosthesis comprising:
- a hollow artificial cup in the shape of a cup preferably with an outer surface of the spherical cap type, in particular hemispherical, comprising expansion slots distributed over its periphery;
- said acetabulum and said intermediate element comprise screwing means such that the external surface of said intermediate element is capable of coming into congruent contact by screwing against at least one interior and meridian generatrix of each segment delimited by two of said consecutive slots,
- Said means for screwing said intermediate element into said acetabulum comprises a peripheral thread produced on the inner surface of the acetabulum close to its opening, a thread in which said intermediate element is screwed using complementary threads on its outer surface close to its opening,
- the internal diameter of the opening of said acetabulum in the waiting position before the screwing of said intermediate element is less than the external diameter of said intermediate element
- said acetabulum has bone anchoring teeth on its outer face.
- This configuration of the acetabular prosthesis according to the invention in which the intermediate element is supported in contact with at least one internal generator and meridian of the internal cavity of the artificial acetabulum, allows a good distribution of the forces and stresses over the entire surface of the artificial cup.
- the peripheral thread according to the present invention ensures a progressive opening of the slotted element, so that the positioning of the acetabulum during its positioning is made more precise.
- the intermediate element is a new hollow hemispherical outer surface, and capable of coming into contact against at least an internal generator and meridian of each segment defined by two consecutive expansion slots of the artificial cup.
- this intermediate core is a solid part whose external surface is continuous.
- all the internal surfaces of the acetabulum are in contact with the external surface of the core, when the latter is fully screwed and placed in the acetabulum.
- the inner part close to the opening of the hollow acetabulum has a thread into which said intermediate core is screwed, also having a thread corresponding to its upper outer edge surrounding its own opening, and the internal diameter of the opening of said acetabulum in the waiting position before the screwing of said intermediate core is less than that of the outer of this intermediate core.
- the three elements which make up the prosthesis according to the invention are all of hemispherical nesting and congruent shape.
- the present invention avoids over time any mobility and displacement between these parts.
- the continuous inner surface of the intermediate element likewise allows perfect congruence of the plastic insert which will not thus risk creeping or catching on any roughness of the intermediate element.
- the present invention makes it possible, thanks to this fitting and the congruence of the intermediate element with the acetabulum, to adjust the orientation of the insert which then receives the cephalic ball of the joint, as described in the patent application. previous by M. Chauvin, cited above.
- the particular position and arrangement of the external anchoring and pre-impaction teeth of the acetabulum make it possible, on the one hand, to place it in the bone cavity in an easy and precise manner by simple support at the bottom thereof without having to tap the wall of this cavity, thereby stabilizing the acetabulum in the bone so that the screwing of the intermediate element is possible, and on the other hand to anchor in this bone cavity by expansion during the screwing of the intermediate core, the orientation of the fins forming said anchoring teeth ensuring both the anti-rotation and the anti-extraction of said acetabulum.
- a very effective first stability is obtained thanks to the link thus obtained between the prosthesis and the bone.
- the anchoring teeth are distributed regularly over the external surface of said segments of the artificial acetabulum towards its opening and the distal ends of said anchoring teeth before screwing are located inside the envelope surface, preferably an envelope sphere of diameter Ds, corresponding to the position of the external surface of the acetabulum once expanded by screwing the intermediate element.
- the anchoring teeth arranged on the outer surface of the segments towards the opening of the acetabulum are formed of fins, some being symmetrical with respect to a meridian plane passing through the polar axis of the acetabulum, and the others being symmetrical about a plane perpendicular to said axis.
- said segments comprise impaction teeth consisting of spikes situated in the polar region of the external surface of the acetabulum, preferably.
- the area close to the opening of the acetabulum in which the anchoring teeth are arranged and the polar area in which the teeth are arranged of impaction, are delimited by a plane perpendicular to the polar axis in a proportion of 2/3 to 2/5 for the area close to the opening and 1/5 to 1/3 for the polar area.
- Said impaction pins are arranged in a vertical or intermediate direction between the vertical direction of the polar axis and the radial direction of said sphere of diameter and
- the bone anchoring teeth are arranged in a radial or intermediate direction between said radial direction and the direction perpendicular to the polar axis.
- the interior surface of said intermediate element is solid and polished, and said insert consists of a fixed or mobile cup, preferably mobile, with an external surface in the form of a smooth spherical cap, and has a cavity with internal surface. smooth spherical.
- the invention in another embodiment, also offers the advantage of perfect congruence between the insert and the cup, to reduce wear and creep.
- Figure 1 is a cross section showing the acetabular prosthesis according to the invention, introduced into the cavity of the iliac bone of an already operated patient.
- Figures 2a and 2b show respectively in side view and in section, an artificial cup according to the invention.
- Figures 3a and 3b show respectively in side view and in section, an intermediate element according to the invention.
- the expandable acetabular prosthesis 1 is of the type comprising an artificial acetabular cup 2 into which is screwed an intermediate element 3 which receives an insert 4, also hollow and made of plastic material such as polyethylene, or other materials such as ceramic.
- the artificial cup 2 and the intermediate element 3 are preferably made of a biocompatible metallic material.
- the artificial cup in the form of a hollow cap 2 has a number of expansion slots 6 which are regularly and symmetrically distributed around its periphery: the slots 6 are arranged in the direction of the pole P? of the acetabulum so as to form a segment 7 between each slit, all of these segments being integral with the polar cap P 2 , which is therefore non-deformable in this zone and whose outside diameter D 5 corresponds to the diameter of the bone cavity 5 , performed in the iliac bone 10, in order to receive said prosthesis.
- This polar zone P 2 is of course located along the polar axis Pi Pi 'of the prosthesis and opposite the different openings of the different parts that compose it.
- the distal ends of the anchoring teeth 1 1 1 and 1 12, disposed towards the opening 14 of the artificial cup 2 are located inside the envelope sphere of diameter D 5 corresponding to the position of the external surface of the acetabulum 2, once expanded by the intermediate element 3: this facilitates the insertion of the acetabulum into the bone cavity 5.
- the impact teeth 1 13 in the form of pins, located on the segments 7 towards the polar zone P 2 of said cup 2, protrude from said envelope sphere of diameter D5 so as to be impacted directly into the bone cavity 5 during the positioning of said cup 2 at the bottom thereof and d '' ensure a first immobilization.
- the zone close to the opening 14 of the acetabulum 12 in which the anchoring teeth 1 1 1 and 1 12 are arranged and the polar zone P 2 in which the impaction teeth 1 13 are arranged, are delimited by a perpendicular plane to the polar axis Pi, P'i in a proportion of 3/4 for the zone close to the opening 14 and 1/4 for the polar zone, that is to say that the polar zone occupies a height along the polar axis from said pole corresponding to 1/4 of the total height.
- said polar zone P 2 of the cup 2 on which the impact pins 1 13 of the cup 2 are arranged in the bone cavity is a spherical cap and forms with the distal ends of the bone anchoring teeth 1 1 arranged outside said polar zone P 2 towards the opening of the cup 14 in the waiting position before screwing, a sphere of diameter D5 corresponding to the position of the external surface of said cup 2 after screwing and anchoring of the teeth 1 1 in the cavity bone, as shown in spaced lines in Figure 2B.
- the intermediate element 3 has an external profile corresponding to that of the internal cup 2 once expanded, but with an external diameter D3 greater than the internal diameter d 2 of said cup at the opening 14 of that -when it is in the waiting position, for example when it is placed inside the cavity 5 against the bottom of the latter: thus when the intermediate element 3 is screwed inside the cup 2 , said segments 7 are progressively moved apart as the threads of the thread 13 of the intermediate element 3 engage in those of the thread 12 of the acetabulum 2 because of their arrangement in divergent profile on the outer spherical surface of said intermediate element.
- teeth 1 1 anchor arranged on the outer face of the segments 7 towards the opening 14 of the acetabulum 1, are formed of fins 1 12 arranged in meridian planes passing through the polar axis Pi P'i du cup 2 and ensuring an anti-rotation function, and the others 1 11 in parallel planes perpendicularly cutting the axis Pi P'i and ensuring the anti-extraction function.
- This insert 4 preferably made of plastic material itself has in its middle a cavity 9 which allows to receive the prosthetic head shown in phantom in Figure 1.
- the insert 4 will include, arranged in a crown on its external face, appendages which are regularly distributed over its periphery: these appendages have an external profile identical to the clearance close to that of notches 8 formed in the intermediate element 3, around and at the edge of its opening 15, and in which are housed said appendages of the insert 4: the inclination of the crown carrying said appendages relative to the polar axis XX 'of the insert 4 allows to angularly adjust it relative to the polar axis Pi P'i of the intermediate element 3 and the cup 2; likewise with regard to the angular position of the appendages, with respect to the notches 8 for adjusting the angle of rotation of the insert 4 around the polar axis Pi P'i; this being described in patent application FR 2 700 946 by M Chauvin. Means for fixing and blocking said insert 4 relative to
- the inner surface of the acetabulum 2 and the outer surface of the intermediate element 3 have a partially frustoconical shape or a non-spherical cap with an ovoid curvature, however preferably having a circular opening with an internal diameter d 2 .
- the insert 4 can be made of ceramic material.
- the outer surface of said artificial cup 2 can be treated with a biomaterial promoting osteointegration such as hydroxyapathite (PAH).
- PAH hydroxyapathite
- lugs and / or hooks can be added and placed in the area close to the opening 14 of the cup 2.
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)
- Materials For Medical Uses (AREA)
- Steroid Compounds (AREA)
- Looms (AREA)
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002390514A CA2390514A1 (fr) | 1999-11-19 | 2000-11-09 | Prothese cotyloidienne expansible a double mobilite |
AU15283/01A AU1528301A (en) | 1999-11-19 | 2000-11-09 | Expansible acetabular prosthesis with double mobility |
AT00977637T ATE303112T1 (de) | 1999-11-19 | 2000-11-09 | Dehnbare hüftpfannenprothese mit zwei freiheitsgraden |
US10/129,813 US6811569B1 (en) | 1999-11-19 | 2000-11-09 | Expansible acetabular prosthesis with double mobility |
DE60022379T DE60022379T2 (de) | 1999-11-19 | 2000-11-09 | Dehnbare hüftpfannenprothese mit zwei freiheitsgraden |
EP00977637A EP1229872B1 (fr) | 1999-11-19 | 2000-11-09 | Prothese cotyloidienne expansible a double mobilite |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR99/14543 | 1999-11-19 | ||
FR9914543A FR2801193B1 (fr) | 1999-11-19 | 1999-11-19 | Prothese cotyloidienne expansible a double mobilite |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001035873A1 true WO2001035873A1 (fr) | 2001-05-25 |
Family
ID=9552288
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR2000/003115 WO2001035873A1 (fr) | 1999-11-19 | 2000-11-09 | Prothese cotyloidienne expansible a double mobilite |
Country Status (9)
Country | Link |
---|---|
US (1) | US6811569B1 (fr) |
EP (1) | EP1229872B1 (fr) |
AT (1) | ATE303112T1 (fr) |
AU (1) | AU1528301A (fr) |
CA (1) | CA2390514A1 (fr) |
DE (1) | DE60022379T2 (fr) |
ES (1) | ES2248148T3 (fr) |
FR (1) | FR2801193B1 (fr) |
WO (1) | WO2001035873A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006048461A2 (fr) * | 2004-11-08 | 2006-05-11 | Centre National De La Recherche Scientifique (Cnrs) | Prothese acetabulaire destinee a etre fixee sans ciment |
WO2013088176A1 (fr) * | 2011-12-15 | 2013-06-20 | Thorwald Springer | Cotyle prothétique |
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WO2000074604A1 (fr) * | 1999-06-02 | 2000-12-14 | Australian Surgical Design And Manufacture Pty Limited | Composant acetabulaire d'ensemble de remplacement integral de la hanche |
AUPQ070399A0 (en) * | 1999-06-02 | 1999-06-24 | Cryptych Pty Ltd | Acetabular component of total hip replacement assembly |
US8123814B2 (en) | 2001-02-23 | 2012-02-28 | Biomet Manufacturing Corp. | Method and appartus for acetabular reconstruction |
US7597715B2 (en) | 2005-04-21 | 2009-10-06 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
CA2400955A1 (fr) * | 2002-08-22 | 2004-02-22 | Roger Bacon | Cotyle prothetique expansible |
US20060147332A1 (en) | 2004-12-30 | 2006-07-06 | Howmedica Osteonics Corp. | Laser-produced porous structure |
AU2003261497B2 (en) | 2002-11-08 | 2009-02-26 | Howmedica Osteonics Corp. | Laser-produced porous surface |
US7044974B2 (en) * | 2003-08-27 | 2006-05-16 | Zimmer Technology, Inc. | Hip prosthesis with a modular acetabular cup assembly |
GB0321582D0 (en) * | 2003-09-15 | 2003-10-15 | Benoist Girard Sas | Prosthetic acetabular cup and prosthetic femoral joint incorporating such a cup |
US8277457B1 (en) | 2004-12-09 | 2012-10-02 | Greatbatch Medical S.A. | Orthopaedic inserter using a collet mechanism |
US20060190089A1 (en) * | 2005-02-18 | 2006-08-24 | Howmedica Osteonics Corp. | Internal adaptor for hip acetabular cage |
US8292967B2 (en) | 2005-04-21 | 2012-10-23 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
US8021432B2 (en) | 2005-12-05 | 2011-09-20 | Biomet Manufacturing Corp. | Apparatus for use of porous implants |
US8266780B2 (en) | 2005-04-21 | 2012-09-18 | Biomet Manufacturing Corp. | Method and apparatus for use of porous implants |
US8066778B2 (en) | 2005-04-21 | 2011-11-29 | Biomet Manufacturing Corp. | Porous metal cup with cobalt bearing surface |
US20070106392A1 (en) * | 2005-11-08 | 2007-05-10 | Howmedica Osteonics Corp. | Acetabular cup locking mechanism |
US8728387B2 (en) * | 2005-12-06 | 2014-05-20 | Howmedica Osteonics Corp. | Laser-produced porous surface |
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GB0608756D0 (en) * | 2006-05-03 | 2006-06-14 | Benoist Girard Sas | Prosthetic acetabular cup with outwardly projecting flange |
DE102007031669A1 (de) * | 2006-08-04 | 2008-09-11 | Ceramtec Ag Innovative Ceramic Engineering | Asymmetrische Gestaltung von Hüftpfannen zur Verringerung der Pfannendeformationen |
DE102007031667A1 (de) * | 2006-08-04 | 2008-02-14 | Ceramtec Ag Innovative Ceramic Engineering | Einfügen von schwingungsdämpfenden Elementen in Prothesensysteme zur Manipulation und Dämpfung der Eigenfrequenzen |
US8163028B2 (en) | 2007-01-10 | 2012-04-24 | Biomet Manufacturing Corp. | Knee joint prosthesis system and method for implantation |
US8157869B2 (en) | 2007-01-10 | 2012-04-17 | Biomet Manufacturing Corp. | Knee joint prosthesis system and method for implantation |
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US8562616B2 (en) | 2007-10-10 | 2013-10-22 | Biomet Manufacturing, Llc | Knee joint prosthesis system and method for implantation |
US8328873B2 (en) | 2007-01-10 | 2012-12-11 | Biomet Manufacturing Corp. | Knee joint prosthesis system and method for implantation |
US7780740B2 (en) * | 2007-05-21 | 2010-08-24 | Active Implants Corporation | Methods, systems, and apparatus for implanting prosthetic devices into cartilage |
US8123815B2 (en) | 2008-11-24 | 2012-02-28 | Biomet Manufacturing Corp. | Multiple bearing acetabular prosthesis |
US8398650B1 (en) | 2009-01-27 | 2013-03-19 | Greatbatch Medical S.A. | Offset cup impactor with an expandable dome for double mobility implants |
CA2797746C (fr) * | 2009-04-29 | 2021-12-07 | Maetta Sciences Inc. | Procede de co-traitement de composants dans un procede de moulage par injection de metal, et composants produits par celui-ci |
US9820853B2 (en) * | 2009-05-06 | 2017-11-21 | Biomet Manufacturing, Llc | Acetabular cup system |
CN102458311A (zh) * | 2009-05-07 | 2012-05-16 | 史密夫和内修有限公司 | 用于假体的模块化试验头 |
GB0910552D0 (en) * | 2009-06-18 | 2009-07-29 | Finsbury Dev Ltd | Prosthesis |
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CN113576718B (zh) * | 2021-09-28 | 2022-02-18 | 北京爱康宜诚医疗器材有限公司 | 髋臼杯假体 |
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- 1999-11-19 FR FR9914543A patent/FR2801193B1/fr not_active Expired - Fee Related
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- 2000-11-09 ES ES00977637T patent/ES2248148T3/es not_active Expired - Lifetime
- 2000-11-09 WO PCT/FR2000/003115 patent/WO2001035873A1/fr active IP Right Grant
- 2000-11-09 CA CA002390514A patent/CA2390514A1/fr not_active Abandoned
- 2000-11-09 EP EP00977637A patent/EP1229872B1/fr not_active Expired - Lifetime
- 2000-11-09 US US10/129,813 patent/US6811569B1/en not_active Expired - Fee Related
- 2000-11-09 DE DE60022379T patent/DE60022379T2/de not_active Expired - Fee Related
- 2000-11-09 AU AU15283/01A patent/AU1528301A/en not_active Abandoned
- 2000-11-09 AT AT00977637T patent/ATE303112T1/de not_active IP Right Cessation
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FR2645433A1 (fr) * | 1989-04-05 | 1990-10-12 | High Tech Ind | Cupule destinee a etre fixee sans ciment pour prothese totale de la hanche |
EP0486403A1 (fr) * | 1990-11-13 | 1992-05-20 | Impact | Cotyle pour prothèse de hanche |
FR2680674A1 (fr) * | 1991-09-04 | 1993-03-05 | Materiel Chirurgical Ste Inter | Prothese cotylouidienne a cupule expansible. |
FR2700946A1 (fr) * | 1993-02-04 | 1994-08-05 | Chauvin Jean Luc | Prothèse cotyloïdienne expansible. |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006048461A2 (fr) * | 2004-11-08 | 2006-05-11 | Centre National De La Recherche Scientifique (Cnrs) | Prothese acetabulaire destinee a etre fixee sans ciment |
FR2877563A1 (fr) * | 2004-11-08 | 2006-05-12 | Centre Nat Rech Scient | Prothese acetabulaire destinee a etre fixee sans ciment |
WO2006048461A3 (fr) * | 2004-11-08 | 2006-09-14 | Centre Nat Rech Scient | Prothese acetabulaire destinee a etre fixee sans ciment |
US8506644B1 (en) | 2004-11-08 | 2013-08-13 | Centre National De La Recherche Scientifique (Cnrs) | Acetabular prosthesis to be fixed without cement |
WO2013088176A1 (fr) * | 2011-12-15 | 2013-06-20 | Thorwald Springer | Cotyle prothétique |
Also Published As
Publication number | Publication date |
---|---|
ES2248148T3 (es) | 2006-03-16 |
DE60022379D1 (de) | 2005-10-06 |
CA2390514A1 (fr) | 2001-05-25 |
EP1229872A1 (fr) | 2002-08-14 |
EP1229872B1 (fr) | 2005-08-31 |
FR2801193A1 (fr) | 2001-05-25 |
US6811569B1 (en) | 2004-11-02 |
ATE303112T1 (de) | 2005-09-15 |
FR2801193B1 (fr) | 2002-02-15 |
DE60022379T2 (de) | 2006-07-13 |
AU1528301A (en) | 2001-05-30 |
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