FR2578739A1 - Humeral prosthesis - Google Patents

Humeral prosthesis Download PDF

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Publication number
FR2578739A1
FR2578739A1 FR8504055A FR8504055A FR2578739A1 FR 2578739 A1 FR2578739 A1 FR 2578739A1 FR 8504055 A FR8504055 A FR 8504055A FR 8504055 A FR8504055 A FR 8504055A FR 2578739 A1 FR2578739 A1 FR 2578739A1
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France
Prior art keywords
cap
humerus
head
humeral prosthesis
intended
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Pending
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FR8504055A
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French (fr)
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Individual
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Individual
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Priority to FR8504055A priority Critical patent/FR2578739A1/en
Publication of FR2578739A1 publication Critical patent/FR2578739A1/en
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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
    • A61F2/3601—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices
    • A61F2/3603—Femoral heads ; Femoral endoprostheses for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices implanted without ablation of the whole natural femoral head
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4003—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30721—Accessories
    • A61F2/30749—Fixation appliances for connecting prostheses to the body
    • 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
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30242—Three-dimensional shapes spherical
    • A61F2002/30245—Partial spheres
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2002/30331—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementarily-shaped recess, e.g. held by friction fit
    • A61F2002/30332—Conically- or frustoconically-shaped protrusion and recess
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—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
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
    • A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30604—Special structural features of bone or joint prostheses not otherwise provided for modular
    • A61F2002/30616—Sets comprising a plurality of prosthetic parts of different sizes or orientations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/3085—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • 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
    • A61F2/40—Joints for shoulders
    • A61F2/4003—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft
    • A61F2002/4007—Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft implanted without ablation of the whole natural humeral head
    • 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
    • A61F2220/0008—Fixation appliances for connecting prostheses to the body
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0063—Three-dimensional shapes
    • A61F2230/0071—Three-dimensional shapes spherical

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

Abstract

This humeral prosthesis consists, on the one hand, of a spherical cap 2 carrying at its centre an internal radial anchoring pin 7 and, on the other hand, of an externally threaded bush 4, intended to be screwed into the head 3a of the humerous 3 and having a central bore 4b of the same profile as the radial pin 7 of the cap 2 for which it is intended to act as housing.

Description

"Prothèse humérale"
La présente invention concerne une prothèse humérale. L'épaule constitue un complexe articulaire comprenant deux parties essentielles, à savoir la partie gléno-humérale comportant elle-même la tête humérale et la cavité glénoldienne engagée partiellement l'une dans l'autre, et la partie sous acromio-corac & dienne complétée par la coiffe musculo-tendineuse qui est à la fois coaptrice et motrice."Humeral prosthesis"
The present invention relates to a humeral prosthesis. The shoulder constitutes an articular complex comprising two essential parts, namely the glenohumeral part itself comprising the humeral head and the glenoldian cavity partially engaged one inside the other, and the part under acromio-corac & dian completed. by the musculo-tendon cap which is both coaptor and motor.

Lorsque l'atteinte pathologique est purement humérale, la cavité glénoidienne n'étant pas altérée et la coiffe étant intacte ou réparable, seule une prothèse humérale est nécessaire. La prothèse humérale objet de la présente demande vise à redonner à la tête humérale atteinte un bon état de surface sans qu'il soit nécessaire d'avoir recours à unerésection importante de l'humérus ni à l'emploi d'un ciment de scellement dont le vieillissement n'assure pas toujours la tenue souhaitée. When the pathological attack is purely humeral, the glenoid cavity not being altered and the cap being intact or repairable, only a humeral prosthesis is necessary. The humeral prosthesis which is the subject of the present application aims to restore the affected humeral head to a good surface condition without the need for significant resection of the humerus or the use of a sealing cement, aging does not always provide the desired hold.

A cet effet, cette prothèse humérale est constituée, d'une part, par une calotte sphérique portant, en son centre, un pion radial interne d'ancrage et, d'autre part, par une douille filetée extérieurement, destinée à être vissée dans la tête (3a) de l'humérus (3) et présentant un alésage central de même profil que le pion radial de la calotte auquel il est destiné à servir de logement. To this end, this humeral prosthesis is constituted, on the one hand, by a spherical cap bearing, in its center, an internal radial anchor pin and, on the other hand, by an externally threaded sleeve, intended to be screwed into the head (3a) of the humerus (3) and having a central bore of the same profile as the radial pin of the cap to which it is intended to serve as housing.

Naturellement, les dimensions de cette calotte sont déterminées de manière qu'elle soit adaptable à la tête de l'humérus qu'elle est destinée à resurfacer et il est donc nécessaire de disposer d'un jeu de calottes de différentes dimensions. Naturally, the dimensions of this cap are determined so that it is adaptable to the head of the humerus that it is intended to resurface and it is therefore necessary to have a set of caps of different dimensions.

L'alésage de la douille filetée et le pion radial de la calotte peuvent être cylindriques. Cependant, suivant une forme d'exécution perfectionnée de l'invention procurant à cette prothèse une meilleure tenue, ils sont tous les deux tronconiques de profils complémentaires, permettant la fixation de la prothèse par coincement conique
Pour améliorer la fixation de cette calotte à la tête de l'humérus, elle porte avantageusement, sur sa périphérie, une patte latérale percée d'un trou permettant sa fixation à l'humérus par une vis.The bore of the threaded sleeve and the radial pin of the cap may be cylindrical. However, according to an improved embodiment of the invention providing this prosthesis with better hold, they are both frustoconical with complementary profiles, allowing the prosthesis to be fixed by conical wedging
To improve the fixing of this cap to the head of the humerus, it advantageously carries, on its periphery, a lateral tab pierced with a hole allowing its fixing to the humerus by a screw.

Cette disposition assure une retenue certaine de la calotte en s'opposant à tout désengagement de son pion radial par rapport à l'alésage de la douille filetée. This arrangement ensures certain retention of the cap by opposing any disengagement of its radial pin relative to the bore of the threaded sleeve.

De toute façon, l'invention sera bien comprise à l'aide de la
description qui suit, en référence au dessin schématique annexé représen tant, à titre d'exemple non limitatif, une forme d'exécution de cette prothèse
Figure 1 est une vue en perspective de l'extrémité supérieure d'un humérus équipé de cette prothèse ;
Figure 2 est une vue éclatée et en coupe suivant Il-Il de figure 1;
Figure 3 est une vue en coupe suivant Il-Il de figure 1 ;
Figure 4 est une vue en bout de la douille vissée dans la tête de l'humérus.In any case, the invention will be well understood using the
description which follows, with reference to the appended diagrammatic drawing representing, by way of nonlimiting example, an embodiment of this prosthesis
Figure 1 is a perspective view of the upper end of a humerus equipped with this prosthesis;
Figure 2 is an exploded view in section along Il-Il of Figure 1;
Figure 3 is a sectional view along Il-Il of Figure 1;
Figure 4 is an end view of the socket screwed into the head of the humerus.

Comme le montre le dessin cette prothèse est constituée essentiellement par une calotte sphérique (2) destinée à être appliquée contre la tête (3a) d'un humérus (3), de manière à compenser son mauvais état de surface. As shown in the drawing, this prosthesis essentially consists of a spherical cap (2) intended to be applied against the head (3a) of a humerus (3), so as to compensate for its poor surface condition.

Cette prothèse, qui réalise donc un resurfaçage de la tête (3a > de l'humérus (3) sans exiger aucune amputation importante de cet os, ne peut être utilisée que lorsque seule la tête de l'humérus est atteinte et que la cavité glénoidienne contre laquelle cette tête prend appui est en parfait état. This prosthesis, which therefore performs a resurfacing of the head (3a> of the humerus (3) without requiring any significant amputation of this bone, can only be used when only the head of the humerus is affected and the glenoid cavity against which this head rests is in perfect condition.

Il faut aussi que la coiffe qui assure la retenue de la tête (3a) de l'humérus (3) dans la cavité glénoidienne en l'empêchant de se déplacer vers le haut soit elle aussi en parfait état ou, tout au moins, réparable. It is also necessary that the cap which retains the head (3a) of the humerus (3) in the glenoid cavity by preventing it from moving upwards is also in perfect condition or, at least, repairable .

La calotte sphérique (2) doit évidemment présenter des dimensions qui permettent son adaptation à la tête (3a) de l'humérus (3) qu'elle doit épouser parfaitement. The spherical cap (2) must obviously have dimensions which allow it to adapt to the head (3a) of the humerus (3) which it must marry perfectly.

I1 est évident que le praticien peut perfectionner son adaptation en agissant sur la tête (3a) de l'humérus (3). Il est cependant nécessaire qu'il puisse disposer d'un jeu de calottes sphériques (2 > de dimensions différentes pour choisir celle convenant le mieux aux dimensions de la tête (3a) de l'humérus (3) atteinte. It is obvious that the practitioner can perfect his adaptation by acting on the head (3a) of the humerus (3). It is however necessary that he can have a set of spherical caps (2> of different dimensions to choose the one best suited to the dimensions of the head (3a) of the affected humerus (3).

Pour assurer un bon ancrage de la calotte (2) sur la tête (3a) de l'humérus (3) sans avoir recours à un ciment, il est prévu une douille (4) portant un filetage extérieur (4c) et destinée à être vissée dans un puits (6) préalablement foré radialement dans la tête (3a) de Humérus (3), comme illustré sur la figure 2. To ensure good anchoring of the cap (2) on the head (3a) of the humerus (3) without having to use cement, there is provided a socket (4) carrying an external thread (4c) and intended to be screwed into a well (6) previously drilled radially in the head (3a) of Humerus (3), as illustrated in Figure 2.

Pour permettre son vissage, l'extrémité extérieure (4a) de la douille (4) porte une fente diamétrale fraisée (5) permettant l'engagement d'une lame de tournevis.  To allow its screwing, the outer end (4a) of the socket (4) carries a milled diametral slot (5) allowing the engagement of a screwdriver blade.

Cette douille (4) présente un alésage axial (4b) destiné à servir de logement à un pion (7) fixé radialement à la face interne de la calotte (2), au voisinage de son sommet. Ce pion (7) présente évidemment les mêmes dimensions extérieures que l'alésage (4b) de la douille (4).  This sleeve (4) has an axial bore (4b) intended to serve as a housing for a pin (7) fixed radially to the internal face of the cap (2), in the vicinity of its top. This pin (7) obviously has the same external dimensions as the bore (4b) of the sleeve (4).

Pour parfaire la tenue de la calotte (2) sur la tête (3a) de llhumé- rus (3), l'alésage (4b) de la douille (4) et le pion radial (7) de la calotte (2) ont un profil légèrement tronconique permettant leur liaison par coincement réciproque en fin d'engagement du second dans le premier. To perfect the holding of the cap (2) on the head (3a) of the humus (3), the bore (4b) of the sleeve (4) and the radial pin (7) of the cap (2) have a slightly frustoconical profile allowing their connection by mutual wedging at the end of engagement of the second in the first.

Cette tenue est encore améliorée par la présence, le long du bord périphérique de la calotte (2), dans la zone inférieure de ce bord, d'une patte (8) percée d'un trou traversant (9) dans lequel peut être engagée une vis (11) apte à être implantée dans le sommet de la diaphyse de l'humérus (3). La présence de cette vis (11), qui ne subit elle-même que peut de contraintes, a pour effet d'empêcher tout désengagement éventuel et. intempestif du pion (7) hors de l'alésage (4b) de la douille (4). This holding is further improved by the presence, along the peripheral edge of the cap (2), in the lower zone of this edge, of a tab (8) pierced with a through hole (9) in which can be engaged a screw (11) adapted to be implanted in the top of the diaphysis of the humerus (3). The presence of this screw (11), which itself undergoes only a few constraints, has the effect of preventing any possible disengagement and. untimely pin (7) out of the bore (4b) of the sleeve (4).

Enfin, suivant encore une autre caractéristique avantageuse de l'invention, le filetage externe (4c) de la douille (4) présente un profil conique ayant pour effet de faciliter sa mise en place dans la tête (3a) de l'humérus (3) et d'en réduire la durée.  Finally, according to yet another advantageous characteristic of the invention, the external thread (4c) of the sleeve (4) has a conical profile having the effect of facilitating its positioning in the head (3a) of the humerus (3 ) and reduce their duration.

Claims (5)

- REVENDICMlONS- CLAIMS 1.- Prothèse humérale, caractérisée en ce qu'elle est constituée, d'une part, par une calotte sphérique (2) portant, en son centre, un pion radial interne d'ancrage (7) et, d'autre part, par une douille (4) filetée extérieurement, destinée à être vissée dans la tête (3a) de l'humérus (3) et présentant un alésage central (4b) de même profil que le pion radial (7) de la calotte (2) auquel il est destiné à servir de logement. 1.- Humeral prosthesis, characterized in that it consists, on the one hand, of a spherical cap (2) carrying, in its center, an internal radial anchor pin (7) and, on the other hand, by an externally threaded sleeve (4) intended to be screwed into the head (3a) of the humerus (3) and having a central bore (4b) of the same profile as the radial pin (7) of the cap (2) which it is intended to serve as housing. 2.- Prothèse humérale selon la revendication 1, caractérisée en ce que le pion radial interne (7) de la calotte (2) et l'alésage (4b) de la douille (4) sont cylindriques de manière à permettre l'engagement du premier dans le second à coulissement doux. 2.- humeral prosthesis according to claim 1, characterized in that the internal radial pin (7) of the cap (2) and the bore (4b) of the sleeve (4) are cylindrical so as to allow the engagement of the first in the second with smooth sliding. 3.- Prothèse humérale selon la revendication l, caractérisée en ce que le pion radial interne (7) de la calotte (2) et l'alésage (4b) de la douille (4) sont tronconiques de manière à permettre leur liaison par coincement en fin d'engagement du premier dans le second. 3.- humeral prosthesis according to claim l, characterized in that the internal radial pin (7) of the cap (2) and the bore (4b) of the sleeve (4) are frustoconical so as to allow their connection by wedging at the end of the engagement of the first in the second. 4.- Prothèse humérale selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle porte, sur sa périphérie, une patte latérale (8) percée d'un trou (9) permettant sa fixation à l'humérus (3) par une vis (11).  4.- humeral prosthesis according to any one of claims 1 to 3, characterized in that it carries, on its periphery, a lateral tab (8) pierced with a hole (9) allowing its attachment to the humerus ( 3) by a screw (11). 5.- Prothèse humérale selon l'une quelconque des revendications précédentes, caractérisée en ce que le filetage (4c) de la douille (4) destinée à être vissée radialement dans la tête (3a) de l'humérus (3) est tronconique.  5. Humeral prosthesis according to any one of the preceding claims, characterized in that the thread (4c) of the sleeve (4) intended to be screwed radially into the head (3a) of the humerus (3) is frustoconical.
FR8504055A 1985-03-12 1985-03-12 Humeral prosthesis Pending FR2578739A1 (en)

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FR2626169A1 (en) * 1988-01-21 1989-07-28 Hechard Patrick Hip prosthesis
FR2673100A1 (en) * 1991-02-27 1992-08-28 Herzberg Guillaume Wrist joint prosthesis
EP0581667A1 (en) * 1992-07-29 1994-02-02 Science Et Medecine Sa Screw-in glene prosthesis
EP0639359A1 (en) * 1993-08-16 1995-02-22 Howmedica GmbH An endoprothesis for a shoulder joint
WO1995029650A2 (en) * 1994-05-02 1995-11-09 Laghaollah Elhami Joint prosthesis and device for making a drilling in at least one bone head
WO1997047257A1 (en) * 1996-06-14 1997-12-18 Mosseri Raphael Total hip prosthesis for endo-articular implantation, and ancillary device therefor
US5800553A (en) * 1991-07-23 1998-09-01 Aktiebolaget Astra Hip joint prosthesis to be permanently anchored within a femur of a patient
US6156069A (en) * 1999-02-04 2000-12-05 Amstutz; Harlan C. Precision hip joint replacement method
WO2001013823A3 (en) * 1999-08-23 2001-08-23 Emanuel Gautier Femur head-segment prosthesis and instrument for precise insertion of a segment prosthesis
EP1138284A1 (en) * 2000-03-27 2001-10-04 Benoist Girard Sas Femoral hip prothesis
US6524343B2 (en) 2000-03-27 2003-02-25 Benoist Girard Sas Femoral hip prosthesis
DE20120241U1 (en) * 2001-12-14 2003-04-24 KERAMED Medizintechnik GmbH, 07646 Mörsdorf Endoprosthesis
EP1566154A1 (en) * 2004-02-20 2005-08-24 Argomedical AG Prosthesis for surface replacement in the area of the ball of ball bearings
EP1464305A3 (en) * 2003-03-31 2006-01-18 Depuy Products, Inc. Orthopaedic joint replacement prosthesis
US7255717B2 (en) * 2004-05-13 2007-08-14 Park Myung-Sik Femoral head surface replacement system
WO2007104852A2 (en) * 2006-03-10 2007-09-20 Michel Timoteo Implant for resurfacing a femoral head
EP1920736A1 (en) * 2006-11-07 2008-05-14 ESKA-medical Gesellschaft für Entwicklung und Vertrieb von medizinischen Implantat-Artikeln mbH Joint part cap implant for an artificial hip joint
EP1990026A2 (en) 2007-05-01 2008-11-12 Arthrex, Inc. Partial humeral head prosthesis
WO2008146124A2 (en) * 2007-05-25 2008-12-04 Lima - Lto Spa Humeral prosthesis for the articulation of the shoulder
EP1762191A3 (en) * 2005-09-13 2009-04-08 Biomet Manufacturing Corp. Modular humeral head resurfacing system
US7527631B2 (en) 2003-03-31 2009-05-05 Depuy Products, Inc. Arthroplasty sizing gauge
US7585327B2 (en) 2003-09-24 2009-09-08 Biomet Manufacturing Corp. Extended articular surface resurfacing head
US7879042B2 (en) 2004-03-05 2011-02-01 Depuy Products, Inc. Surface replacement extractor device and associated method
US8105327B2 (en) 2003-03-31 2012-01-31 Depuy Products, Inc. Punch, implant and associated method
EP2451387A1 (en) * 2009-07-10 2012-05-16 Milux Holding SA Hip joint device
US8246687B2 (en) 2009-11-18 2012-08-21 Biomet Manufacturing Corp. Shoulder prosthetic
US8317871B2 (en) 2001-07-27 2012-11-27 Biomet Manufacturing Corp. Modular humeral head resurfacing system
US8366713B2 (en) 2003-03-31 2013-02-05 Depuy Products, Inc. Arthroplasty instruments and associated method
US8545506B2 (en) 2003-03-31 2013-10-01 DePuy Synthes Products, LLC Cutting guide for use with an extended articulation orthopaedic implant
US9918854B2 (en) 2011-03-16 2018-03-20 Smith & Nephew, Inc. Compound angle implant

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Cited By (68)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2626169A1 (en) * 1988-01-21 1989-07-28 Hechard Patrick Hip prosthesis
FR2673100A1 (en) * 1991-02-27 1992-08-28 Herzberg Guillaume Wrist joint prosthesis
US5800553A (en) * 1991-07-23 1998-09-01 Aktiebolaget Astra Hip joint prosthesis to be permanently anchored within a femur of a patient
EP0581667A1 (en) * 1992-07-29 1994-02-02 Science Et Medecine Sa Screw-in glene prosthesis
FR2694186A1 (en) * 1992-07-29 1994-02-04 Science Medecine Screwed glenoid prosthesis and placement method.
US5658340A (en) * 1993-08-16 1997-08-19 Howmedica Gmbh Endoprosthesis for a shoulder joint
EP0639359A1 (en) * 1993-08-16 1995-02-22 Howmedica GmbH An endoprothesis for a shoulder joint
WO1995029650A2 (en) * 1994-05-02 1995-11-09 Laghaollah Elhami Joint prosthesis and device for making a drilling in at least one bone head
WO1995029650A3 (en) * 1994-05-02 1996-01-04 Laghaollah Elhami Joint prosthesis and device for making a drilling in at least one bone head
US6482237B2 (en) 1996-06-14 2002-11-19 Raphael Mosseri Total hip prosthesis adapted to be implanted endo-articularly and its auxiliary device and method of implantation
FR2749753A1 (en) * 1996-06-14 1997-12-19 Mosseri Raphael TOTAL HIP PROSTHESIS FOR ENDO-ARTICULAR PLACEMENT AND ITS ANCILLARY DEVICE
US6231611B1 (en) 1996-06-14 2001-05-15 Raphael Mosseri Total hip prosthesis for endo-articular implantation, and ancillary device therefor
WO1997047257A1 (en) * 1996-06-14 1997-12-18 Mosseri Raphael Total hip prosthesis for endo-articular implantation, and ancillary device therefor
US6156069A (en) * 1999-02-04 2000-12-05 Amstutz; Harlan C. Precision hip joint replacement method
WO2001013823A3 (en) * 1999-08-23 2001-08-23 Emanuel Gautier Femur head-segment prosthesis and instrument for precise insertion of a segment prosthesis
EP1138284A1 (en) * 2000-03-27 2001-10-04 Benoist Girard Sas Femoral hip prothesis
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US10166032B2 (en) 2001-07-27 2019-01-01 Biomet Manufacturing, Llc Modular humeral head resurfacing system
US10034758B2 (en) 2001-07-27 2018-07-31 Biomet Manufacturing, Llc Modular humeral head resurfacing system
US8317871B2 (en) 2001-07-27 2012-11-27 Biomet Manufacturing Corp. Modular humeral head resurfacing system
US8753402B2 (en) 2001-07-27 2014-06-17 Biomet Manufacturing, Llc Modular humeral head resurfacing system
DE20120241U1 (en) * 2001-12-14 2003-04-24 KERAMED Medizintechnik GmbH, 07646 Mörsdorf Endoprosthesis
US8814943B2 (en) 2003-03-31 2014-08-26 DePuy Synthes Products,LLC Bone preparation tool kit and associated method
US9254135B2 (en) 2003-03-31 2016-02-09 DePuy Synthes Products, Inc. Arthroplasty instruments and associated method
US11147691B2 (en) 2003-03-31 2021-10-19 DePuy Synthes Products, Inc. Punch, implant and associated method
US10517742B2 (en) 2003-03-31 2019-12-31 DePuy Synthes Products, Inc. Punch, implant and associated method
US9445911B2 (en) 2003-03-31 2016-09-20 DePuy Synthes Products, Inc. Bone preparation tool kit and associated method
US9107758B2 (en) 2003-03-31 2015-08-18 DePuy Synthes Products, Inc. Bone preparation tool kit and associated method
US8974458B2 (en) 2003-03-31 2015-03-10 DePuy Synthes Products, LLC Arthroplasty instruments and associated method
US8882776B2 (en) 2003-03-31 2014-11-11 DePuy Synthes Products, LLC Extended articulation orthopaedic implant
US7517364B2 (en) * 2003-03-31 2009-04-14 Depuy Products, Inc. Extended articulation orthopaedic implant and associated method
US7527631B2 (en) 2003-03-31 2009-05-05 Depuy Products, Inc. Arthroplasty sizing gauge
EP1464305A3 (en) * 2003-03-31 2006-01-18 Depuy Products, Inc. Orthopaedic joint replacement prosthesis
US8545506B2 (en) 2003-03-31 2013-10-01 DePuy Synthes Products, LLC Cutting guide for use with an extended articulation orthopaedic implant
AU2004201349B2 (en) * 2003-03-31 2010-04-29 Depuy Products, Inc. Extended articulation orthopaedic implant and associated method
US8444646B2 (en) 2003-03-31 2013-05-21 Depuy Products, Inc. Bone preparation tool kit and associated method
US8070755B2 (en) 2003-03-31 2011-12-06 Depuy Products, Inc. Joint arthroplasty kit and method
US8105327B2 (en) 2003-03-31 2012-01-31 Depuy Products, Inc. Punch, implant and associated method
US8366713B2 (en) 2003-03-31 2013-02-05 Depuy Products, Inc. Arthroplasty instruments and associated method
US8182541B2 (en) 2003-03-31 2012-05-22 Depuy Products, Inc. Extended articulation orthopaedic implant
US7585327B2 (en) 2003-09-24 2009-09-08 Biomet Manufacturing Corp. Extended articular surface resurfacing head
US9314344B2 (en) 2003-09-24 2016-04-19 Biomet Manufacturing, Llc Extended articular surface resurfacing head
US8277512B2 (en) 2003-09-24 2012-10-02 Biomet Manufacturing Corp. Extended articular surface resurfacing head
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US9504581B2 (en) 2003-09-24 2016-11-29 Biomet Manufacturing, Llc Extended articular surface resurfacing head
US7670382B2 (en) 2003-09-24 2010-03-02 Biomet Manufacturing Corp. Extended articular surface resurfacing head
US8157870B2 (en) 2004-02-20 2012-04-17 Synthes Usa, Llc Prosthesis for replacing the surface in the area of the ball of ball-and-socket joints
WO2005079709A1 (en) * 2004-02-20 2005-09-01 Argomedical Ag Prosthesis for replacing the surface in the area of the ball of ball-and-socket joints
EP1566154A1 (en) * 2004-02-20 2005-08-24 Argomedical AG Prosthesis for surface replacement in the area of the ball of ball bearings
US8282649B2 (en) 2004-03-05 2012-10-09 Depuy Products, Inc. Extended articulation orthopaedic implant
US7879042B2 (en) 2004-03-05 2011-02-01 Depuy Products, Inc. Surface replacement extractor device and associated method
US7255717B2 (en) * 2004-05-13 2007-08-14 Park Myung-Sik Femoral head surface replacement system
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WO2007104852A3 (en) * 2006-03-10 2007-11-15 Michel Timoteo Implant for resurfacing a femoral head
WO2007104852A2 (en) * 2006-03-10 2007-09-20 Michel Timoteo Implant for resurfacing a femoral head
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US8591592B2 (en) 2007-05-01 2013-11-26 Arthrex, Inc. Method of implanting partial humeral head prosthesis
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WO2008146124A3 (en) * 2007-05-25 2009-03-19 Lima Lto Spa Humeral prosthesis for the articulation of the shoulder
WO2008146124A2 (en) * 2007-05-25 2008-12-04 Lima - Lto Spa Humeral prosthesis for the articulation of the shoulder
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