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FR2784576A1 - Femoral prosthesis family has at least two sub-families with cervico- diaphysis angle varying from one sub-family to another - Google Patents

Femoral prosthesis family has at least two sub-families with cervico- diaphysis angle varying from one sub-family to another Download PDF

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Publication number
FR2784576A1
FR2784576A1 FR9813018A FR9813018A FR2784576A1 FR 2784576 A1 FR2784576 A1 FR 2784576A1 FR 9813018 A FR9813018 A FR 9813018A FR 9813018 A FR9813018 A FR 9813018A FR 2784576 A1 FR2784576 A1 FR 2784576A1
Authority
FR
France
Prior art keywords
family
prosthesis
sub
angle
prostheses
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.)
Granted
Application number
FR9813018A
Other languages
French (fr)
Other versions
FR2784576B1 (en
Inventor
Anjou Bertrand D
Philippe Asquier
Arnaud Largier
Hubert Candavoine
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.)
Medical Solution SARL
Original Assignee
Medical Solution SARL
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 Medical Solution SARL filed Critical Medical Solution SARL
Priority to FR9813018A priority Critical patent/FR2784576B1/en
Publication of FR2784576A1 publication Critical patent/FR2784576A1/en
Application granted granted Critical
Publication of FR2784576B1 publication Critical patent/FR2784576B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • 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
    • 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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/367—Proximal or metaphyseal parts of shafts
    • 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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3676—Distal or diaphyseal parts of shafts
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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 for implanting artificial joints
    • A61F2/4603—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof
    • A61F2/4607—Special tools for implanting artificial joints for insertion or extraction of endoprosthetic joints or of accessories thereof of hip femoral endoprostheses
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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
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30176—V-shaped
    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30322—The prosthesis having different structural features at different locations within the same prosthesis differing in surface 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
    • 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
    • A61F2002/30317—The prosthesis having different structural features at different locations within the same prosthesis
    • A61F2002/30326—The prosthesis having different structural features at different locations within the same prosthesis differing in height or in length
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—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
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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
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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
    • A61F2002/30606—Sets comprising both cemented and non-cemented endoprostheses
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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
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
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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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    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
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    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
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    • 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
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    • A61F2250/0026—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in surface structures
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    • A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
    • A61F2250/0037—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in height or in length
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    • 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
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    • 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
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    • A61F2310/00023—Titanium or titanium-based alloys, e.g. Ti-Ni alloys
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    • 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

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  • 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)
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  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

A femoral prosthesis family with progressive lateralisation consists of at least two sub-familes with a constant cervico-diaphysis angle (alpha) in each sub-family but which varies from one sub-family to another. The angle reduces from the smaller sizes to the larger ones by 1.5 plus/minus 0.5 degrees, and in three sub-families, for instance, the angles are 135, 133.5 and 132 degrees, plus or minus 0.5 degrees in each case. The neck of each prosthesis is tipped by a Morse cone (4) with an angle of taper of 6 degrees plus/minus 10 min.

Description

PROTHESE FEMORALE
L'invention a pour objet une nouvelle prothèse fémorale, qui est polyvalente et offre une stabilité dans l'os élevée.FEMALE PROSTHESIS
The subject of the invention is a novel femoral prosthesis, which is versatile and provides high bone stability.

Les prothèses fémorales sont connues depuis longtemps, et sont de deux types, anatomique ou à queue droite. L'angle entre la queue et la tte, dit angle cervico-diaphysaire, dans les prothèses standard, tant anatomique que à queue droite, est fixé à 135 et reste à cette valeur quelle que soit la longueur de la queue. Cet angle est inférieur à cette valeur de 135 dans les prothèses dites latéralisées (l'angle précité se rapprochant de 1'angle cervico-diaphysaire anatomique), et peut atteindre des valeurs jusqu'à 129 , des valeurs de 132 étant cependant généralement retenues. Dans ce cas encore, la valeur de l'angle est fixée quelle que soit la longueur de la queue. Or, un angle fixe, quelle que soit la longueur de la queue, présente l'inconvénient de ne plus tre adapté pour certaines tailles de prothèses. Il a aussi été proposé de modifier cet angle en fonction de la longueur de la prothèse, notamment dans le cas des prothèses anatomiques. Dans ce cas, la latéralisation est dite homothétique, l'angle variant de façon linéaire en fonction de la longueur de la prothèse. Femoral prostheses have been known for a long time, and are of two types, anatomical or straight-tailed. The angle between the tail and the head, said cervico-diaphyseal angle, in the standard prostheses, both anatomical and straight tail, is set at 135 and remains at this value regardless of the length of the tail. This angle is less than this value of 135 in so-called lateralized prostheses (the aforementioned angle approximating the anatomical cervico-diaphyseal angle), and can reach values up to 129, values of 132 being however generally retained. In this case again, the value of the angle is fixed regardless of the length of the tail. However, a fixed angle, regardless of the length of the tail, has the disadvantage of not being adapted for certain sizes of prostheses. It has also been proposed to modify this angle as a function of the length of the prosthesis, particularly in the case of anatomical prostheses. In this case, the lateralization is said to be homothetic, the angle varying linearly as a function of the length of the prosthesis.

Cependant, la encore, il existe des tailles pour lesquelles cet angle n'est pas approprié.However, again, there are sizes for which this angle is not appropriate.

L'invention résout le problème ci-dessus en offrant une famille de prothèses fémorales qui permet une adéquation totale quelle que soit la taille de la prothèse.  The invention solves the above problem by providing a family of femoral prostheses that allows total fit regardless of the size of the prosthesis.

Ainsi, l'invention fournit une famille de prothèses fémorales à latéralisation progressive. Thus, the invention provides a family of femoral prostheses progressive lateralization.

On entend par latéralisation progressive le fait d'avoir des sous-familles (au mons deux) présentant un angle cervico-diaphysaire constant dans la sous-famille, mais qui varie d'une sous-famille à l'autre, cet angle diminuant des petites tailles vers les grandes tailles ; chaque sous-famille comprend au moins deux tailles. Progressive lateralization is defined as having subfamilies (at mons two) with a constant cervico-diaphyseal angle in the subfamily, but which varies from one subfamily to another, this angle decreasing from small sizes to large sizes; each subfamily comprises at least two sizes.

Selon un mode de réalisation, la famille de prothèses selon l'invention comprend au moins trois sous-familles, la variation de l'angle cervico-diaphysaire d'une sousfamille à l'autre étant de 1,5 0,5 . According to one embodiment, the family of prostheses according to the invention comprises at least three sub-families, the variation of the cervico-diaphyseal angle from one subfamily to another is 1.5 0.5.

Selon un autre mode de réalisation, la famille de prothèses selon l'invention comprend trois sous-familles, les angles cervico-diaphysaires des sous-familles étant de 135 0,5 , 133,5 0,5 et 132 0,5 . According to another embodiment, the family of prostheses according to the invention comprises three sub-families, the cervico-diaphyseal angles of the sub-families being 135 0.5, 133.5 0.5 and 132 0.5.

Selon un autre mode de réalisation, chaque sousfamille comprend trois tailles ou plus. In another embodiment, each subfamily comprises three or more sizes.

Cette latéralisation progressive permet d'optimiser l'angle cervico-diaphysaire de la prothèse à chaque patient. This progressive lateralization makes it possible to optimize the cervico-diaphyseal angle of the prosthesis with each patient.

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente un cône morse (4) dont l'angle au sommet est de 6 + 10'.  According to another embodiment, each prosthesis according to the invention has a Morse taper (4) whose apex angle is 6 + 10 '.

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente un cône morse (4) de 10,5/12. According to another embodiment, each prosthesis according to the invention has a Morse taper (4) of 10.5 / 12.

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente sur ses côtés, dans la partie métaphysaire (3a), un ensemble d'ailettes (7a-7f) en forme de V inversé. According to another embodiment, each prosthesis according to the invention has on its sides, in the metaphyseal part (3a), a set of fins (7a-7f) V-shaped inverted.

Selon un autre mode de réalisation, les ailettes (7a7f) présentent chacune une branche sensiblement perpendiculaire à l'axe de la tige (3) et une branche selon un angle de 25 à 65 , de préférence sensiblement de 45 , par rapport à ce mme axe, selon le sens antérieur. According to another embodiment, the fins (7a7f) each have a branch substantially perpendicular to the axis of the rod (3) and a branch at an angle of 25 to 65, preferably substantially 45, relative to the same. axis, according to the previous direction.

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente sur ses côtés, dans la partie diaphysaire (3b), deux ou trois rainures (8a, 8b).  According to another embodiment, each prosthesis according to the invention has on its sides, in the diaphyseal part (3b), two or three grooves (8a, 8b).

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente, à l'extrémité supérieure de la partie mtaphysaire (3a), un alésage fileté (9) destiné à recevoir un bouchon (9') et un matériel ancillaire. According to another embodiment, each prosthesis according to the invention has, at the upper end of the metaphyseal part (3a), a threaded bore (9) intended to receive a plug (9 ') and ancillary equipment.

Selon un autre mode de réalisation, chaque prothèse selon l'invention présente une tige fémorale (3) droite. According to another embodiment, each prosthesis according to the invention has a right femoral stem (3).

Selon un autre mode de réalisation, chaque prothèse selon l'invention est cimentée. According to another embodiment, each prosthesis according to the invention is cemented.

Selon un autre mode de réalisation, chaque prothèse selon l'invention est sans ciment. According to another embodiment, each prosthesis according to the invention is cementless.

L'invention est maintenant décrite plus en détail dans la description suivante, et en référence aux dessins, dans lesquels : -la figure 1 est une prothèse selon l'invention ; -la figure 2 est une prothèse selon l'invention. The invention is now described in more detail in the following description, and with reference to the drawings, in which: FIG. 1 is a prosthesis according to the invention; FIG. 2 is a prosthesis according to the invention.

La figure 1 représente une prothèse (1) selon l'invention, qui comprend une tte (2) et une tige (3), la tige présentant une partie mtaphysaire (3a) et une partie diaphysaire ou queue (3b). L'angle alpha cervicodiaphysaire varie d'une sous-famille à une autre. Si on numérote les tailles de 1 à 9, de la plus petite à la plus grande, on peut par exemple obtenir la famille suivante, constituée de 3 sous-familles.

Figure img00030001
Figure 1 shows a prosthesis (1) according to the invention, which comprises a head (2) and a rod (3), the rod having a metaphyseal part (3a) and a diaphyseal part or tail (3b). The alpha cervicodiaphyseal angle varies from one subfamily to another. If we number the sizes from 1 to 9, from the smallest to the largest, we can for example obtain the following family, made up of 3 sub-families.
Figure img00030001

<SEP> 12 <SEP> 3 <SEP> 4 <SEP> 5 <SEP> 6 <SEP> 7 <SEP> 1 <SEP> 8 <SEP> 1 <SEP> 9 <SEP>
<tb> Alpha <SEP> 135 <SEP> 133, <SEP> 5 <SEP> 132 <SEP>
<tb> <SEP> L1 <SEP> 135 <SEP> 140 <SEP> 145 <SEP> 150 <SEP> 155 <SEP> 160 <SEP> 165 <SEP> 170 <SEP> 175
<tb> (mm) <SEP>
<tb> <SEP> L2 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP>
<tb> (mm)
<tb>
On pourrait aussi avoir des tailles encore plus grandes, par exemple 10,11 et 12, avec des valeurs de longueurs L1 et L2 plus élevées, ces tailles plus grandes pouvant en outre conduire à des prothèses dites de reprise. L'angle alpha pourrait tre toujours de 132 comme ci-dessus (la troisième sous-famille comprenant alors 6 tailles) ou tre plus faible, par exemple 131 (une quatrième sous-famille comprenant alors les tailles 10,11 et 12). Une taille"0"peut aussi tre prévue ; il s'agit dans ce cas d'une prothèse dite dysplasique.<SEP> 12 <SEP> 3 <SEP> 4 <SEP> 5 <SEP> 6 <SEP> 7 <SEP> 1 <SEP> 8 <SEP> 1 <SEP> 9 <SEP>
<tb> Alpha <SEP> 135 <SEP> 133, <SEP> 5 <SEP> 132 <SEP>
<tb><SEP> L1 <SEP> 135 <SEP> 140 <SEP> 145 <SEP> 150 <SEP> 155 <SEP> 160 <SEP> 165 <SEP> 170 <SEP> 175
<tb> (mm) <SEP>
<tb><SEP> L2 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP> 41 <SEP>
<tb> (mm)
<Tb>
One could also have even larger sizes, for example 10, 11 and 12, with values of lengths L1 and L2 higher, these larger sizes may further lead to so-called resumption prostheses. The angle alpha could be always 132 as above (the third subfamily then comprising 6 sizes) or be smaller, for example 131 (a fourth subfamily then including sizes 10, 11 and 12). A size "0" can also be provided; it is in this case a so-called dysplastic prosthesis.

La prothèse présente un cône morse (4) destiné à recevoir la tte (5), le cône présentant un angle au sommet de 6 . Un tel angle est bien adapté pour recevoir des ttes présentant un cône intérieur dont l'angle est de 5 43'. Le cône (4) présente des diamètres caractéristiques de 10,5 et 12 mm dans le mode de réalisation représenté, ce qui permet de recevoir un plus grand choix de ttes, ayant des diamètres variables, par exemple 22 et 28 mm. La tte est enfoncée à force sur le cône, de façon classique. La prothèse peut aussi présenter une collerette optionnelle (6) venant en appui sur le petit trochanter. La tige fémorale (3) peut présenter, au niveau de la portion métaphysaire, un évasement mono-ou bidimentionnel de sorte à réaliser un tulipage. The prosthesis has a Morse taper (4) for receiving the head (5), the cone having an apex angle of 6. Such an angle is well adapted to receive heads having an inner cone whose angle is 43 '. The cone (4) has characteristic diameters of 10.5 and 12 mm in the embodiment shown, which allows to receive a larger choice of heads, having varying diameters, for example 22 and 28 mm. The head is forced into the cone, in a classical way. The prosthesis may also have an optional collar (6) bearing on the small trochanter. The femoral stem (3) may have, at the level of the metaphyseal portion, a single-or two-dimensional flaring so as to achieve a tulip.

La figure 2 représente la prothèse (1) selon l'invention, avec certains modes de réalisation. La tige de la prothèse représentée présente, dans sa partie métaphysaire, des ailettes (7a-7f) en forme de V inversé. Figure 2 shows the prosthesis (1) according to the invention, with some embodiments. The stem of the prosthesis shown has, in its metaphyseal part, fins (7a-7f) inverted V-shaped.

Une branche du V inversé est perpendiculaire à l'axe de la tige, tandis que l'autre branche forme un angle d'environ 45 avec ce mme axe, selon le sens antérieur (vers le bas, côté antérieur).One branch of the inverted V is perpendicular to the axis of the stem, while the other branch forms an angle of about 45 with the same axis, according to the previous direction (downwards, anterior side).

Ce système d'ailettes empche d'une part l'enfoncement et d'autre part les mouvements latéraux, à savoir la valgisation et la varisation. Ces ailettes peuvent tre associées avec des ailettes droites (perpendiculaires ou parallèle à l'axe de la tige), le cas échéant. Les ailettes peuvent tre protubérantes ou non. La prothèse présente aussi dans sa partie diaphysaire des rainures (8a, 8b) (ici au nombre de deux) empchant la rotation de la tige fémorale. Le nombre faible de rainures (2 ou 3) offre une extractibilité élevée. This system of fins prevents on the one hand the depression and on the other side movements, namely valgization and varisation. These fins may be associated with straight fins (perpendicular or parallel to the axis of the rod), if appropriate. The fins may be protruding or not. The prosthesis also has in its diaphyseal portion grooves (8a, 8b) (here two in number) preventing the rotation of the femoral stem. The low number of grooves (2 or 3) provides high extractibility.

La prothèse représentée présente aussi, à l'extrémité supérieure de la partie métaphysaire (3a) un alésage fileté (9), destiné à recevoir un matériel ancillaire (non représenté), ledit alésage étant protégé par un bouchon (9', non représenté), une fois la prothèse implantée. Cet alésage permet à la fois une impaction et une extraction, le bouchon protégeant le filetage de toute croissance de tissu (osseux). The prosthesis shown also has, at the upper end of the metaphyseal portion (3a), a threaded bore (9) for receiving ancillary equipment (not shown), said bore being protected by a plug (9 ', not shown). , once implanted prosthesis. This bore allows both impaction and extraction, the cap protecting the thread of any growth of tissue (bone).

La prothèse de l'invention peut tre anatomique ou droite ; de préférence la tige fémorale est droite. The prosthesis of the invention may be anatomical or straight; preferably the femoral stem is straight.

La prothèse selon l'invention peut tre avec ou sans ciment. Dans le cas avec ciment, le matériau constitutif peut tre de l'inox (par exemple 316L) ou un alliage de titane (par exemple TA6V), ayant éventuellement reçu un traitement d'ionisation. Dans le cas sans ciment, un revtement destiné à favoriser l'accrochage osseux est appliqué, par exemple en hydroxyapatite (HA). The prosthesis according to the invention can be with or without cement. In the case with cement, the constituent material may be stainless steel (for example 316L) or a titanium alloy (for example TA6V), possibly having received an ionization treatment. In the case without cement, a coating intended to promote the attachment of bone is applied, for example hydroxyapatite (HA).

Certaines caractéristiques décrites ci-dessus peuvent aussi s'appliquer à toutes les prothèses existantes, et l'invention s'étend aussi à toutes ces applications. Certain features described above can also be applied to all existing prostheses, and the invention extends to all these applications.

Notamment, les ailettes en V inversé dans la partie métaphysaire et l'alésage fileté avec son bouchon peuvent tre appliqués à chaque prothèse de l'art antérieur.In particular, the inverted V fins in the metaphyseal part and the threaded bore with its cap can be applied to each prosthesis of the prior art.

L'invention n'est pas limitée aux modes de réalisation décrits mais est susceptible de nombreuses variations aisément accessibles à l'homme du métier.  The invention is not limited to the embodiments described but is capable of numerous variations easily accessible to those skilled in the art.

Claims (13)

REVENDICATIONS 1.-Famille de prothèses fémorales à latéralisation progressive, comprenant au mons deux sousfamilles présentant un angle cervico-diaphysaire constant dans la sous-famille, mais qui varie d'une sous-famille à l'autre, cet angle diminuant des petites tailles vers les grandes tailles, chaque sous-famille comprenant au moins deux tailles. 1.-Family of femoral prostheses with progressive lateralization, including two subfamilies having a constant neck-diaphysis angle in the subfamily, but which varies from one subfamily to another, this angle diminishing small sizes towards large sizes, each subfamily comprising at least two sizes. 2.-Famille de prothèses selon la revendication 1, comprenant au moins trois sous-familles, la variation de l'angle cervico-diaphysaire d'une sous-famille à l'autre étant de 1,5 0,5 . 2. A family of prostheses according to claim 1, comprising at least three sub-families, the variation of the cervico-diaphyseal angle of a subfamily to the other being 1.5 0.5. 3.-Famille de prothèses selon la revendication 2, comprenant trois sous-familles, les angles cervicodiaphysaires des sous-familles étant de 135 0,5 , 133,5 0,5 et 132 0,5 . 3. The prosthesis family according to claim 2, comprising three sub-families, the cervicodiaphyseal angles of the sub-families being 135 0.5, 133.5 0.5 and 132 0.5. 4.-Famille de prothèses selon l'une quelconque 1 à 3, dans laquelle chaque sous-famille comprend trois tailles ou plus. 4. The prosthesis family of any one of 3, wherein each subfamily comprises three or more sizes. 5.-Famille de prothèses selon l'une quelconque des revendications 1 à 4, dans laquelle chaque prothèse présente un cône morse (4) dont l'angle au sommet est de 6 + 10'. 5.-family of prostheses according to any one of claims 1 to 4, wherein each prosthesis has a Morse taper (4) whose apex angle is 6 + 10 '. 6.-Famille de prothèses selon l'une quelconque des revendications 1 à 5, dans laquelle chaque prothèse présente un cône morse (4) de 10,5/12. 6.-family of prostheses according to any one of claims 1 to 5, wherein each prosthesis has a Morse taper (4) of 10.5 / 12. 7.-Famille de prothèses selon l'une quelconque des revendications 1 à 6, dans laquelle chaque prothèse présente sur ses côtés, dans la partie métaphysaire (3a), un ensemble d'ailettes (7a-7f) en forme de V inversé.  7. The prosthesis family according to any one of claims 1 to 6, wherein each prosthesis has on its sides, in the metaphyseal part (3a), a set of fins (7a-7f) inverted V-shaped. 8.-Famille de prothèses selon la revendication 7, dans laquelle les ailettes (7a-7f) présentent chacune une branche sensiblement perpendiculaire à l'axe de la tige (3) et une branche selon un angle de 25 à 65 , de préférence sensiblement de 45 , par rapport à ce mme axe, selon le sens antérieur. 8.-family of prostheses according to claim 7, wherein the fins (7a-7f) each have a branch substantially perpendicular to the axis of the rod (3) and a branch at an angle of 25 to 65, preferably substantially 45, with respect to this same axis, according to the previous sense. 9.-Famille de prothèses selon l'une quelconque des revendications 1 à 8, dans laquelle chaque prothèse présente sur ses côtés, dans la partie diaphysaire (3b), deux ou trois rainures (8a, 8b). 9.-Family of prostheses according to any one of claims 1 to 8, wherein each prosthesis has on its sides, in the diaphyseal portion (3b), two or three grooves (8a, 8b). 10.-Famille de prothèses selon l'une quelconque des revendications 1 à 9, dans laquelle chaque prothèse présente, à l'extrémité supérieure de la partie mtaphysaire (3a), un alésage fileté (9) destiné à recevoir un bouchon (9') et un matériel ancillaire. 10.-family of prostheses according to any one of claims 1 to 9, wherein each prosthesis has, at the upper end of the metaphyseal part (3a), a threaded bore (9) for receiving a plug (9 '). ) and ancillary equipment. 11.-Famille de prothèses selon l'une quelconque des revendications 1 à 10, dans laquelle chaque prothèse présente une tige fémorale (3) droite. 11.-family of prostheses according to any one of claims 1 to 10, wherein each prosthesis has a femoral stem (3) right. 12.-Famille de prothèses selon l'une quelconque des revendications 1 à 11, dans laquelle chaque prothèse est cimentée. 12.-Family of prostheses according to any one of claims 1 to 11, wherein each prosthesis is cemented. 13.-Famille de prothèses selon l'une quelconque des revendications 1 à 11, dans laquelle chaque prothèse est sans ciment.  13.-family of prostheses according to any one of claims 1 to 11, wherein each prosthesis is cementless.
FR9813018A 1998-10-16 1998-10-16 FEMALE PROSTHESIS Expired - Fee Related FR2784576B1 (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
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FR2814060A1 (en) * 2000-09-18 2002-03-22 Bruno Balay Femoral shaft, for hip replacement joint, has neck at top of medullar insert axes of these two components being at angle of 125 degrees, with ball of joint being mounted on neck with displacement between center and axis of medullar insert
FR2827155A1 (en) * 2001-07-16 2003-01-17 Biomet Merck France Hip prosthesis femoral shank has pairs of cavities in inner face of metaphysis section
FR2830184A1 (en) * 2001-09-28 2003-04-04 Depuy France HIP PROSTHESIS FEMALE PART, SET OF SUCH FEMORAL PARTS, AND METHODS OF MANUFACTURING SUCH FEMALE PART AND FEMALE PARTY GAME
FR2844994A1 (en) * 2002-09-27 2004-04-02 Medacta Int Sa ANATOMICAL FEMALE IMPLANT FOR HIP PROSTHESIS
FR2851456A1 (en) * 2003-02-26 2004-08-27 Groupe Lepine Femoral prosthesis implant has axes of neck and shank at an angle of 130 degrees and porous metal coating on shank with thickness decreasing towards tip
FR2858761A1 (en) * 2003-08-14 2005-02-18 Philippe Lapresle Femoral part formation assembly for total hip prosthesis, has orifices with depth such that it permits to locate centre of curvature of three spherical femoral heads on three possible positions along longitudinal axis of cervix
EP1529500A1 (en) * 2003-11-07 2005-05-11 Bone and Joint Research S.A. Device for replacing the hip joint articulation
FR2862865A1 (en) * 2003-11-27 2005-06-03 Jean Francois Biegun Femoral part for hip prosthesis, has slots formed on lower part of sides of metaphyseal part, where slots are made such that ribs oppose depression of prosthesis in femur, and slots rub wall of femur
EP1639964A1 (en) * 2004-09-27 2006-03-29 Centerpulse France Sas Femoral stem for a hip prosthesis
FR2887137A1 (en) * 2005-06-17 2006-12-22 C2M Implants Femoral rod for hip prosthesis, has proximal and distal parts with specific inclination with respect to rod`s plane of symmetry so that parts form specific angle, where proximal parts extend along specific height of shank
FR2893837A1 (en) * 2005-11-28 2007-06-01 Tornier Sas Hip implant set for co-operating with acetabulam of pelvis bone, has hip implants each having rod, neck and head, where absolute value of coordinates of center of head increases with value of thickness of rod taken along one of axes
FR2912307A1 (en) * 2007-02-14 2008-08-15 Biomet France Sarl Hip prosthesis for use in orthopedic implants field, has rod having general axis making angle that includes specific value by projection of frontal plane, and neck with length measured between end opposite to rod and base
FR2925842A1 (en) * 2008-01-02 2009-07-03 Ceram Concept France Sarl Sarl Modular above-knee prosthesis elements assembly for supporting patient's thigh bone, has passage receiving threaded tool to withdraw prosthesis after withdrawing cones, where each cone is different from other cones by longitudinal dimension
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US5156627A (en) * 1987-03-30 1992-10-20 Regents Of The University Of California Collarless femoral hip prosthesis
US5004475A (en) * 1988-03-15 1991-04-02 Vermeire Dirk V Hip prosthesis
FR2644690A1 (en) * 1989-03-21 1990-09-28 Matco Femoral prosthesis having an anchoring system with screwed metaphysis and blocked diaphysis
FR2660855A1 (en) * 1990-04-13 1991-10-18 Orthocogit Hip prosthesis
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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2814060A1 (en) * 2000-09-18 2002-03-22 Bruno Balay Femoral shaft, for hip replacement joint, has neck at top of medullar insert axes of these two components being at angle of 125 degrees, with ball of joint being mounted on neck with displacement between center and axis of medullar insert
FR2827155A1 (en) * 2001-07-16 2003-01-17 Biomet Merck France Hip prosthesis femoral shank has pairs of cavities in inner face of metaphysis section
FR2830184A1 (en) * 2001-09-28 2003-04-04 Depuy France HIP PROSTHESIS FEMALE PART, SET OF SUCH FEMORAL PARTS, AND METHODS OF MANUFACTURING SUCH FEMALE PART AND FEMALE PARTY GAME
WO2003028594A1 (en) * 2001-09-28 2003-04-10 Depuy France Femoral hip prosthesis part, a set of such femoral parts and the production method thereof
FR2844994A1 (en) * 2002-09-27 2004-04-02 Medacta Int Sa ANATOMICAL FEMALE IMPLANT FOR HIP PROSTHESIS
FR2851456A1 (en) * 2003-02-26 2004-08-27 Groupe Lepine Femoral prosthesis implant has axes of neck and shank at an angle of 130 degrees and porous metal coating on shank with thickness decreasing towards tip
FR2858761A1 (en) * 2003-08-14 2005-02-18 Philippe Lapresle Femoral part formation assembly for total hip prosthesis, has orifices with depth such that it permits to locate centre of curvature of three spherical femoral heads on three possible positions along longitudinal axis of cervix
EP1529500A1 (en) * 2003-11-07 2005-05-11 Bone and Joint Research S.A. Device for replacing the hip joint articulation
FR2862865A1 (en) * 2003-11-27 2005-06-03 Jean Francois Biegun Femoral part for hip prosthesis, has slots formed on lower part of sides of metaphyseal part, where slots are made such that ribs oppose depression of prosthesis in femur, and slots rub wall of femur
EP1639964A1 (en) * 2004-09-27 2006-03-29 Centerpulse France Sas Femoral stem for a hip prosthesis
FR2875696A1 (en) * 2004-09-27 2006-03-31 Ct Pulse France Soc Par Action FEMALE ROD FOR HIP PROSTHESIS
FR2887137A1 (en) * 2005-06-17 2006-12-22 C2M Implants Femoral rod for hip prosthesis, has proximal and distal parts with specific inclination with respect to rod`s plane of symmetry so that parts form specific angle, where proximal parts extend along specific height of shank
FR2893837A1 (en) * 2005-11-28 2007-06-01 Tornier Sas Hip implant set for co-operating with acetabulam of pelvis bone, has hip implants each having rod, neck and head, where absolute value of coordinates of center of head increases with value of thickness of rod taken along one of axes
FR2912307A1 (en) * 2007-02-14 2008-08-15 Biomet France Sarl Hip prosthesis for use in orthopedic implants field, has rod having general axis making angle that includes specific value by projection of frontal plane, and neck with length measured between end opposite to rod and base
EP1958596A1 (en) * 2007-02-14 2008-08-20 Biomet Merck France Femoral rod for a hip prosthesis
FR2925842A1 (en) * 2008-01-02 2009-07-03 Ceram Concept France Sarl Sarl Modular above-knee prosthesis elements assembly for supporting patient's thigh bone, has passage receiving threaded tool to withdraw prosthesis after withdrawing cones, where each cone is different from other cones by longitudinal dimension
US9687586B2 (en) 2010-04-09 2017-06-27 Excera Orthopedics, Inc. Hip implant
US10842915B2 (en) 2010-04-09 2020-11-24 Excera Orthopedics, Inc. Hip implant

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