FR2610512A1 - Method and means for anchoring elements of implants screwed into the bone tissues, and the implant elements obtained - Google Patents

Method and means for anchoring elements of implants screwed into the bone tissues, and the implant elements obtained Download PDF

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Publication number
FR2610512A1
FR2610512A1 FR8701887A FR8701887A FR2610512A1 FR 2610512 A1 FR2610512 A1 FR 2610512A1 FR 8701887 A FR8701887 A FR 8701887A FR 8701887 A FR8701887 A FR 8701887A FR 2610512 A1 FR2610512 A1 FR 2610512A1
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Prior art keywords
elements
anchoring
threads
projections
recesses
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Granted
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FR8701887A
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French (fr)
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FR2610512B1 (en
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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
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • 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
    • A61F2/32—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
    • A61F2/32—Joints for the hip
    • A61F2/36—Femoral heads ; Femoral endoprostheses
    • A61F2/3662—Femoral shafts
    • A61F2/3672—Intermediate parts of shafts
    • 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
    • A61F2/3676—Distal or diaphyseal parts of shafts
    • 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
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    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30112—Rounded shapes, e.g. with rounded corners
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    • A—HUMAN NECESSITIES
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    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/30199—Three-dimensional shapes
    • A61F2002/30289—Three-dimensional shapes helically-coiled
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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
    • 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
    • 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
    • A61F2002/3082—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
    • A61F2/30767—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
    • A61F2002/30838—Microstructures
    • 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
    • A61F2002/3085—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
    • A61F2002/30864—Microthreads
    • 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
    • A61F2002/30866—Rounded threads
    • 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
    • A61F2002/30879—Ribs
    • 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
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    • A61F2/3609—Femoral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic femoral shafts
    • A61F2002/3625—Necks
    • A61F2002/3631—Necks with an integral complete or partial peripheral collar or bearing shoulder at its base
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    • 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
    • A61F2250/0014—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
    • A61F2250/0026—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

Abstract

This method is noteworthy in that, over all or part of the development of the peripheral anchoring threading, a plurality of small projections and hollows, intended to increase the contact surfaces of the said elements with the bone tissue, are produced.

Description

L'invention a pour objet un procédé et des moyens d'ancrage d'éléments d'implants vissés dans les tissus osseux et les éléments d'implants obtenus. The subject of the invention is a method and means for anchoring implant elements screwed into bone tissue and the implant elements obtained.

L'objet de l'invention se rattache au secteur technique des moyens de réfection des articulations du corps humain. The object of the invention relates to the technical sector of the means of repairing the joints of the human body.

Notamment, l'invention concerne les cotyles artif i- ciels métalliques qui sont vissés dans le cotyle osseux du bassin après restructuration, et dont la partie intérieure est amé- nagée directement par l'intermédiaire d'un noyau pour coopérer avec une tête fémorale artificielle disposée en bout d'une tige fémorale implantée dans le fémur. In particular, the invention relates to artificial metallic acetabular cups which are screwed into the bony acetabulum of the pelvis after restructuring, and the inner part of which is arranged directly by means of a core to cooperate with an artificial femoral head. arranged at the end of a femoral stem implanted in the femur.

Une autre application intéressante se situe au niveau des queues de tiges fémorales qui sont vissées dans le canal intramédullaire du fémur préparé à cet effet. Another interesting application is at the tails of femoral stems which are screwed into the intramedullary canal of the femur prepared for this purpose.

Selon l'invention, on a voulu améliorer l'ancrage de ces éléments de prothèses, et surtout obtenir un maximum de surface de contact avec les tissus osseux pour faciliter l'ostéogé- nase. According to the invention, it was desired to improve the anchoring of these prosthetic elements, and above all to obtain a maximum contact surface with the bone tissues to facilitate osteogenase.

Pour cela, selon une première caractéristique, le filetage périphérique d'ancrage des éléments d'implants dans les tissus osseux, présente sur tout ou partie de son développement une pluralité de saillies et de creux de petites dimensions destinées a multiplier les surfaces de contact desdits éléments avec le tissu osseux. For this, according to a first characteristic, the peripheral thread for anchoring the elements of implants in the bone tissues, presents over all or part of its development a plurality of protrusions and recesses of small dimensions intended to multiply the contact surfaces of said elements with bone tissue.

Ces caractéristiques et d'autres encore ressortiront de la description qui suit. These characteristics and others will emerge from the description which follows.

Pour fixer l'objet de l'invention sans toutefois le limiter, dans les dessins annexés
La figure 1 est une vue en coupe illustrant un cotyle selon un exemple non limitatif de réalisation, et dont le fond du filetage d'ancrage présente les saillies et creux selon l'invention.To set the subject of the invention without however limiting it, in the accompanying drawings
Figure 1 is a sectional view illustrating a cup according to a non-limiting example of embodiment, and the bottom of the anchoring thread has the projections and recesses according to the invention.

La figure 2 est une vue en plan correspondant a la figure 1. FIG. 2 is a plan view corresponding to FIG. 1.

La figure 3 est une vue partielle en coupe à grande échelle correspondant a la figure 2. FIG. 3 is a partial view in section on a large scale corresponding to FIG. 2.

La figure 4 est une vue partielle correspondant a la figure 3, illustrant une variante de réalisation des saillies et creux selon l'invention. Figure 4 is a partial view corresponding to Figure 3, illustrating an alternative embodiment of the projections and recesses according to the invention.

La figure 5 est une vue de face illustrant une tige fémorale dont la queue présente les saillies et creux selon l'invention. Figure 5 is a front view illustrating a femoral stem whose tail has the projections and recesses according to the invention.

La figure 6 est une vue partielle à grande échelle selon la figure 5. FIG. 6 is a partial view on a large scale according to FIG. 5.

La figure 7 est une vue partielle a plus grande échelle montrant un autre exemple de réalisation des saillies et creux selon l'invention. Figure 7 is a partial view on a larger scale showing another embodiment of the projections and recesses according to the invention.

Afin de rendre plus concret l'objet de l'invention. on le décrit maintenant dans des formes non limitatives de réalisation illustrées aux figures des dessins. In order to make the object of the invention more concrete. it is now described in nonlimiting embodiments illustrated in the figures of the drawings.

Aux figures 1 à 4. on a illustré une première application du procédé concernant les cotyles artificiels. Le cotyle artificiel illustré et référencé en (1) est du type comprenant un fond (la) qui présente des orifices (lb) permettant d-intro- duire des moyens de vissage du cotyle dans son logement cotyloïdien. Ledit filetage tic) est par exemple à profil triangulaire mince assurant une pénétration aisée sans taraudage préalable, et il est établi sur une forme extérieure en ogive tron quée, sans pour cela exclure d'autres formes (cylindro-coniques, coniques, sphériques, etc... In Figures 1 to 4. there is illustrated a first application of the method relating to artificial cups. The artificial cup illustrated and referenced in (1) is of the type comprising a bottom (1a) which has orifices (1b) making it possible to introduce means for screwing the cup into its cotyloid housing. Said tic thread) is for example of thin triangular profile ensuring easy penetration without prior tapping, and it is established on an external shape in truncated warhead, without excluding other forms (cylindro-conical, conical, spherical, etc. ...

Intérieurement, le cotyle présente différents alésages aménagés pour recevoir et retenir une cupule en polyéthylène (non représentée) qui est indexée en rotation par coopération d'une saillie avec une ouverture axiale (ld) réalisée sur le fond (la). On voit encore que sur la périphérie sont réalisées des encoches (le) équidistantes destinées à faciliter l'autotaraudage. Internally, the cup has different bores arranged to receive and retain a polyethylene cup (not shown) which is indexed in rotation by cooperation of a projection with an axial opening (ld) made on the bottom (la). It can also be seen that on the periphery are made equidistant notches (the) intended to facilitate self-tapping.

Selon l'invention, pour multiplier les surfaces en contact du cotyle (1) dans son logement, on prévoit de réaliser sur la surface filetée une multitude de saillies et de creux constituant ainsi des mini surfaces supplémentaires pour développer les surfaces d'ancrage.  According to the invention, in order to multiply the surfaces in contact with the acetabulum (1) in its housing, provision is made to produce on the threaded surface a multitude of projections and recesses thus constituting additional mini surfaces for developing the anchoring surfaces.

Suivant une réalisation préférée quoique non limitative, ces saillies et creux sont exécutées avec un outil coupant approprié a surface active simple ou multiple, pour constituer, en une seule passe ou par plongées successives des mini ou micro filetages (if) à profil triangulaire ou d'autres sections. According to a preferred embodiment, although not limiting, these projections and recesses are executed with an appropriate cutting tool with a simple or multiple active surface, to constitute, in a single pass or by successive dives, mini or micro threads (if) with triangular profile or d 'other sections.

Selon les figures 1 et 3, ces filetages (if) sont réalisés seulement au fond des filets du filetage d'ancrage tic) tandis que selon la figure 4, ils sont réalisés à la fois au fond des filets et sur les flancs. Lesdits filetages peuvent encore être réalisés seulement sur les flancs des filets (tic).  According to Figures 1 and 3, these threads (if) are made only at the bottom of the threads of the anchor thread tic) while according to Figure 4, they are made both at the bottom of the threads and on the sides. Said threads can also be made only on the sides of the threads (tic).

On comprend qu'ainsi les surfaces de contact sont multipliées de manière importante et le tissu osseux du logement cotyloïdien peut alors s'introduire dans toutes les micro aspérités lors de la repousse osseuse en améliorant l'ostéogé- nèse.  It is understood that in this way the contact surfaces are multiplied significantly and the bone tissue of the acetabular housing can then be introduced into all the micro asperities during bone regrowth by improving osteogenesis.

Aux figures 5 et 7, on a illustré une autre application du procédé concernant les queues (2a) de tiges fémorales (2) vissées dans le canal intramédullaire qui a été préparé pour recevoir cette queue. FIGS. 5 and 7 illustrate another application of the method relating to the tails (2a) of femoral stems (2) screwed into the intramedullary canal which has been prepared to receive this tail.

Suivant le profil en section des filets (2b) de la queue, on réalise là encore avec un outil coupant approprié des mini ou micro-filetages (2c) soit seulement sur le fond des filets (figures 5 et 6) soit seulement sur les flancs de filets, soit encore sur les flancs et sur le fond (figure 7). According to the section profile of the threads (2b) of the tail, here again, with an appropriate cutting tool, mini or micro-threads (2c) are produced, either only on the bottom of the threads (Figures 5 and 6) or only on the sides fillets, either on the sides and on the bottom (Figure 7).

Bien entendu, le procédé selon l'invention peut entre mis en oeuvre pour d'autres éléments de prothèses destinés a être ancrés par vissage dans les tissus osseux. Of course, the method according to the invention can be used for other prosthetic elements intended to be anchored by screwing into the bone tissues.

Les avantages ressortent bien de la description, on souligne encore, la multiplication importante des surfaces de contact entre le cotyle et le logement cotyloidien, ou entre la queue de la tige fémorale et le canal intramédullaire.  The advantages emerge clearly from the description, it is emphasized again, the significant multiplication of the contact surfaces between the acetabulum and the acetabular housing, or between the tail of the femoral stem and the intramedullary canal.

Claims (1)

REVENDICATIONS -l- Procédé d'ancrage d'éléments d'implants tels que prothèses vissés dans les tissus osseux, caractérisé en ce qu'on exécute sur tout ou partie du développement du filetage périphérique d'ancrage, une pluralité de saillies et de creux de petites dimensions destinées à multiplier les surfaces de contact desdits éléments avec le tissu osseux. -l- Method for anchoring elements of implants such as prostheses screwed into bone tissue, characterized in that a plurality of projections and recesses of small dimensions intended to multiply the contact surfaces of said elements with the bone tissue. -2- Procédé d'ancrage selon la revendication i, caractérisé en ce qu'on réalise les saillies et creux sous la forme de mini ou micro filetages (lf-2c). -2- Anchoring method according to claim i, characterized in that the projections and hollows are produced in the form of mini or micro threads (lf-2c). -3- Procédé d'ancrage selon la revendication 2, caractérisé en ce qu'on réalise les mini ou micro filetages (lf-2c) seulement au fond des filets du filetage d'ancrage (lc-2b) des éléments. -3- Anchoring method according to claim 2, characterized in that performs the mini or micro threads (lf-2c) only at the bottom of the threads of the anchoring thread (lc-2b) of the elements. -4- Procédé d'ancrage selon la revendication 2, caractérisé en ce qu'on réalise les mini ou micro filetages (lf-2c) seulement sur les flancs des filets du filetage d'ancrage < lc-2b) des 6 ments.-4- Anchoring method according to claim 2, characterized in that performs the mini or micro threads (lf-2c) only on the flanks of the threads of the anchoring thread <lc-2b) of the 6 elements. -5- Procédé d'ancrage selon la revendication 2, caractérisé en ce qu'on réalise les mini ou micro filetages (if-2c) a la fois sur le fond et sur les flancs des filets du filetage d'ancrage (lc-2b) des éléments.-5- Anchoring method according to claim 2, characterized in that performs the mini or micro threads (if-2c) both on the bottom and on the flanks of the threads of the anchoring thread (lc-2b ) elements. -6- Moyens de réalisation des saillies et creux selon le procédé de la revendication 1, caractérisés en ce qu'ils sont constitués par un outil coupant à surface active simple ou multiple agissant en une seule passe ou par plongées successives.-6- Means for producing the projections and recesses according to the method of claim 1, characterized in that they consist of a cutting tool with simple or multiple active surface acting in a single pass or by successive dives. -7- éléments d'implants tels que prothèses obtenus selon le procédé de la revendication 1, du type cotyles artificiels métalliques (1) vissés dans le cotyle osseux du bassin par un filetage d'ancrage (tic) dont tout ou partie de son développement présente les saillies et creux de petites dimensions (If) destinées a multiplier les surfaces de contact desdits éléments avec le tissu osseux.-7- implant elements such as prostheses obtained according to the method of claim 1, of the metallic artificial acetabular cup type (1) screwed into the bony acetabulum of the pelvis by an anchoring thread (tic) of which all or part of its development has projections and recesses of small dimensions (If) intended to multiply the contact surfaces of said elements with the bone tissue. -8- éléments d'implants tels que prothèses obtenus selon le procédé de la revendication 1, du type tiges fémorales (2) dont la queue (2a) est vissée dans le canal intramédullaire par un filetage d'ancrage (2b) dont tout ou partie de son développement présente les saillies et creux de petites dimensions (2c) destinées a multiplier les surfaces de contact desdits éléments.  -8- implant elements such as prostheses obtained according to the method of claim 1, of the femoral stem type (2) whose tail (2a) is screwed into the intramedullary canal by an anchoring thread (2b) of which all or part of its development has small projections and recesses (2c) intended to multiply the contact surfaces of said elements.
FR8701887A 1987-02-06 1987-02-06 METHOD AND MEANS FOR ANCHORING ELEMENTS OF SCREWED IMPLANTS IN BONE TISSUES AND THE IMPLANT ELEMENTS OBTAINED Expired - Fee Related FR2610512B1 (en)

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EP0321389A1 (en) * 1987-12-14 1989-06-21 Mecron Medizinische Produkte Gmbh Implantable prosthesis
US5360448A (en) * 1991-10-07 1994-11-01 Thramann Jeffrey J Porous-coated bone screw for securing prosthesis
WO1996015736A1 (en) * 1994-11-23 1996-05-30 Hoermansdoerfer Gerd Anisotropically elastic hip joint endoprosthesis
EP0746273A1 (en) * 1993-11-02 1996-12-11 Hospital For Joint Diseases Control of cell growth
WO1997028760A1 (en) * 1996-02-09 1997-08-14 Institut Straumann Ag Pin or screw-like securing device for osteosynthesis
EP0867193A2 (en) * 1997-03-27 1998-09-30 Friatec Aktiengesellschaft Foil for medical use
EP0832621A3 (en) * 1996-09-30 1999-03-17 Johnson &amp; Johnson Professional, Inc. Implantable article with ablated surface and method of forming same
EP0943304A3 (en) * 1998-03-17 2000-10-11 Biomet Merck Deutschland GmbH Threaded acetabular cup for a hip joint prosthesis
WO2003030957A1 (en) * 2001-10-11 2003-04-17 Straumann Holding Ag Osteophilic implants
EP1440669A1 (en) * 2003-01-23 2004-07-28 Dinkelacker, Wolfgang, Dr. med. dent. Bone implant and process for its manufacture
WO2004098442A1 (en) * 2003-05-03 2004-11-18 Wolfgang Dinkelacker Bone implant that can be screwed in
EP1610706A1 (en) * 2003-03-26 2006-01-04 Young-Taek Sul Helical implant
EP2233108A1 (en) * 2009-03-23 2010-09-29 Astra Tech AB Bone fixture
EP2308411A3 (en) * 2002-12-30 2012-05-09 Nobel Biocare Services AG Implant arrangement
US8221119B1 (en) * 2007-10-09 2012-07-17 Maurice Valen Dental implant and method of installing the same
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US8764443B2 (en) * 2001-12-21 2014-07-01 Nobel Biocare Services Ag Method for producing a surface structure on an implant, and such an implant
US8827703B2 (en) * 2001-12-21 2014-09-09 Nobel Biocare Services Ag Implant, and method and system for producing such an implant
GB2523803A (en) * 2014-03-06 2015-09-09 Nat Univ Ireland Components for bone fixation devices
US9681930B2 (en) 2014-12-15 2017-06-20 Jjgc Industria E Comercio De Materiais Dentarious S/A Implants for enhanced anchoring within bone
USD816841S1 (en) 2014-12-15 2018-05-01 Jjgc Industria E Comercio De Materiais Dentarios S/A Bone implant
US10898301B2 (en) 2016-05-05 2021-01-26 Jjgc Industria E Comercio De Materiais Dentarios S.A. Prosthetic assembly and method for producing the same

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EP0321389A1 (en) * 1987-12-14 1989-06-21 Mecron Medizinische Produkte Gmbh Implantable prosthesis
US5360448A (en) * 1991-10-07 1994-11-01 Thramann Jeffrey J Porous-coated bone screw for securing prosthesis
EP0746273A1 (en) * 1993-11-02 1996-12-11 Hospital For Joint Diseases Control of cell growth
EP0746273A4 (en) * 1993-11-02 1998-11-25 Hospital For Joint Diseases Control of cell growth
WO1996015736A1 (en) * 1994-11-23 1996-05-30 Hoermansdoerfer Gerd Anisotropically elastic hip joint endoprosthesis
WO1997028760A1 (en) * 1996-02-09 1997-08-14 Institut Straumann Ag Pin or screw-like securing device for osteosynthesis
EP0832621A3 (en) * 1996-09-30 1999-03-17 Johnson &amp; Johnson Professional, Inc. Implantable article with ablated surface and method of forming same
EP0867193A2 (en) * 1997-03-27 1998-09-30 Friatec Aktiengesellschaft Foil for medical use
EP0867193A3 (en) * 1997-03-27 1999-04-28 Friatec Aktiengesellschaft Foil for medical use
EP0943304A3 (en) * 1998-03-17 2000-10-11 Biomet Merck Deutschland GmbH Threaded acetabular cup for a hip joint prosthesis
CN100366300C (en) * 2001-10-11 2008-02-06 斯特劳曼控股公司 Bone-seeking implant
WO2003030957A1 (en) * 2001-10-11 2003-04-17 Straumann Holding Ag Osteophilic implants
US20170027668A1 (en) * 2001-12-21 2017-02-02 Nobel Biocare Services Ag Method for producing a surface structure on an implant, and such an implant
US9737392B2 (en) 2001-12-21 2017-08-22 Nobel Biocare Services Ag Implant, and method and system for producing such an implant
US8764443B2 (en) * 2001-12-21 2014-07-01 Nobel Biocare Services Ag Method for producing a surface structure on an implant, and such an implant
US8827703B2 (en) * 2001-12-21 2014-09-09 Nobel Biocare Services Ag Implant, and method and system for producing such an implant
EP2308411A3 (en) * 2002-12-30 2012-05-09 Nobel Biocare Services AG Implant arrangement
EP1440669A1 (en) * 2003-01-23 2004-07-28 Dinkelacker, Wolfgang, Dr. med. dent. Bone implant and process for its manufacture
EP1610706A4 (en) * 2003-03-26 2008-03-26 Young-Taek Sul Helical implant
EP1610706A1 (en) * 2003-03-26 2006-01-04 Young-Taek Sul Helical implant
WO2004098442A1 (en) * 2003-05-03 2004-11-18 Wolfgang Dinkelacker Bone implant that can be screwed in
US8221119B1 (en) * 2007-10-09 2012-07-17 Maurice Valen Dental implant and method of installing the same
US8758012B2 (en) * 2008-07-14 2014-06-24 Nobel Biocare Services Ag Compact dental implant
EP2233108A1 (en) * 2009-03-23 2010-09-29 Astra Tech AB Bone fixture
WO2010108794A1 (en) * 2009-03-23 2010-09-30 Astra Tech Ab Bone fixture
GB2523803A (en) * 2014-03-06 2015-09-09 Nat Univ Ireland Components for bone fixation devices
US9681930B2 (en) 2014-12-15 2017-06-20 Jjgc Industria E Comercio De Materiais Dentarious S/A Implants for enhanced anchoring within bone
USD816841S1 (en) 2014-12-15 2018-05-01 Jjgc Industria E Comercio De Materiais Dentarios S/A Bone implant
USD837378S1 (en) 2014-12-15 2019-01-01 Jjgc Industria E Comercio De Materiais Dentarios S/A Bone implant
USD838369S1 (en) 2014-12-15 2019-01-15 Jjgc Industria E Comercio De Materiais Dentarios S/A Bone implant
USD845485S1 (en) 2014-12-15 2019-04-09 Jjgc Industria E Comercio De Materiais Dentarios S/A Bone implant
US10398533B2 (en) 2014-12-15 2019-09-03 Jjgc Industria E Comercio De Materiais Dentarios S/A Implants for enhanced anchoring within bone
US10898301B2 (en) 2016-05-05 2021-01-26 Jjgc Industria E Comercio De Materiais Dentarios S.A. Prosthetic assembly and method for producing the same

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