FR2539295A3 - Tige d'endoprothese, notamment pour prothese d'articulation de la hanche - Google Patents

Tige d'endoprothese, notamment pour prothese d'articulation de la hanche Download PDF

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Publication number
FR2539295A3
FR2539295A3 FR8316919A FR8316919A FR2539295A3 FR 2539295 A3 FR2539295 A3 FR 2539295A3 FR 8316919 A FR8316919 A FR 8316919A FR 8316919 A FR8316919 A FR 8316919A FR 2539295 A3 FR2539295 A3 FR 2539295A3
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FR
France
Prior art keywords
rod
stem
forces
hip joint
endoprosthetic
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
FR8316919A
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English (en)
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FR2539295B3 (fr
Inventor
Friedrich Josef Esper
Walter Gohl
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Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
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Publication of FR2539295A3 publication Critical patent/FR2539295A3/fr
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Publication of FR2539295B3 publication Critical patent/FR2539295B3/fr
Granted legal-status Critical Current

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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
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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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    • A61F2/3094—Designing or manufacturing processes
    • A61F2/30965—Reinforcing the prosthesis by embedding particles or fibres during moulding or dipping
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
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    • 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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    • A61F2002/30807—Plurality of blind bores
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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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    • 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
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0017—Angular shapes
    • A61F2230/0021—Angular shapes square
    • 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
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • A61F2230/0034—D-shaped

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

A.TIGE D'ENDOPROTHESE, NOTAMMENT POUR UNE PROTHESE D'ARTICULATION DE LA HANCHE; B.CARACTERISEE PAR DES ENCOCHES PROFONDES 11 AVEC, ENTRE ELLES, DES NERVURES 12 PREVUES SUR LA FACE SUPERIEURE 6 DANS LA PARTIE SUPERIEURE DE LA TIGE 1; C.L'INVENTION CONCERNE LES TIGES D'ENDOPROTHESE, NOTAMMENT POUR PROTHESES D'ARTICULATION DE LA HANCHE.

Description

2539295 -
Tige d'endoprothèse, notamment pour prothèse d'articula-
tion de la hanche -
La présente invention concerne une endoprothèse pour articulation de la hanche, avec effet de décharge
de force de traction.
Les composants de fémur d'une endcprothèse de l'articulation de la hanche doivent être ancrés rigidement en permanence sur les os de support Une condition pour un tel ancrage est le respect de la loi de transformation dite de Wolff, telle qu'elle a été décrite dans le docus ment de Wolff, "Loi de transformation des os" Hirschwald Berlin 1892 o D'après cette loi, l'adaptation de l'os vivant restant pourvu de la-prothèse, au développement de forces, obligatoirement perturbées par la résection, n'est possible que si celles-ci ne s'écartent pas trop de leur
allure naturelle.
Ce sont surtout des pointes de tension de traction non physiologiques dans le domaine du plan de résection qu'il importe d'évitero Cela signifie que la tige de la prothèse doit avoir une forme telle que la transmission de force dans l'os restant soit répartie autant que possible uniformément sur la totalité de la
jonction entre os et prothèse.
Une tige de prothèse avec décharge de traction a déjà été mentionnée par Riter (voir Ao Gr Unert Schveickert, Revue Orthop Unfall Clevi 86, 49 à 66, 1977) Dans cette prothèse, il est prévu, un supplément, ui cordon de traction entre côté latéral et côté médian
de la prothèse, lequel rend nécessaire que, pour la fixa-
tion de ce cordon, l'os restant ainsi que la prothèse soient perforés, afin de pouvoir fixer le boulon d'ancrage pour le cordon de liaison Un tel mode de décharge des forces de traction est naturellement très coûteux Il exige une modification de la technique opératoire O Il est d'exécution plus difficile et nécessite enfin un outillage nouveau par rapport aux prothèses non pourvues de ce genre
de décharge de traction.
La présente invention a pour objet une tige d'endoprothèse caractérisée par des encoches creuses avec entre elles, des nervures saillantes, prévues sur le côté
extérieur dans la partie supérieure de la tige.
L'avantage d'une telle tige réside en ce que, par le profil ainsi obtenu de la tige, l'ensemble formé par la tige et par l'os restant est rendu plus rigide, de
telle sorte que les conditions de charge de l'osprinci-
palement sur le c 8 té médian, sont rapprochées de celles existant dans un fémur normal saino Plus spécialement, le flux de forces dans le plan de résection et au voisinage de ce plan est rapproché des conditions naturelles de telle sorte qu'une déformation indésirable de l'os est évitée, avec comme conséquence, un relâchement de la fixation de la prothèse La technique opératoire n'a pas à être modifiée et le profilage prévu de la tige ne rend pas
plus difficile la technique opératoire.
L'invention prévoit des mesures pour la réali-
sation encore améliorée de la tige de prothèse caractéris-
tique de l'invention Plus spécialement et avantageusement les encoches creuses sont interrompues perpendiculairement à la direction longitudinale de la tige, en formant une
nervure continue au milieu de la largeur de la face supé-
rieure de la tige, ce qui réalise encore une sécurité très efficace contre un déplacement de rotation de la tige de
prothèse dans l'os restant.
la description ci-après se rapporte à un
exemple de réalisation de l'invention avec référence aux dessins annexés dans lesquels: la figure la est une vue en plan sur la face inférieure; la figure lb est une vue en plan d'une face latérale; la figure lc est une vue en plan de la face supérieure de la tige de prothèse conforme à l'invention; la figure 2 est une vue, en élévation latérale, d'une tige d'endoprothèse dans le fémur pour expliquer les
conditions des forces produites.
la tige d'endoprothièse est composée de la tige proprement dite 1 et d'une collerette 2 s'étendant dans le
plan de résection, ainsi que d'un cône 3 qui sert de sup-
port pour la rotule du fémur non représentées Sur la face inférieure 4 de la tige 1 des bossages 5 sont prévus pour absorber la force de pression tandis que la face supérieure 6 de la tige 1 est pourvue de bossages 7 pour l'absorption de la force de traction 2 nfin, les faces latérales 8 sont pourvues d'encoches creuses 9 qui produisent un effet de nervures porteuses dans la direction longitud inale de la tige et qui ont surtout un effet de décharge des forces
pour le domaine médian du fémur.
Il en est de même pour les encoches ou gorges prévues dans la collerette 2 de la tige Sur la face supérieure 6 de la tige, dans sa partie supérieure voisine de la collerette 2, sont prévues des encoches creuses 1 avec entre elles des nervures 12, ces encoches 11 étant interrompues au milieu de la largeur de la face supérieure 69 de manière à former une nervure continue 13 destinée, également à l'absorption de forces Dans tous les cas, les conditions sont réalisées pour l'absorption des forces
telles que l'os puisse croître, aussi rapidement que pos-
2539295 i sible et sans formation importante de tissu de liaison, dans l'intérieur des encoches et sur les surfaces saillantes
des bossages.
La tige 1, la collerette 2 et le c 8 ne 3 sont constitués en une seule pièce et peuvent être fabriqués,
en principe, en un matériau approprié pour des endo-
prothèses de ce genre Plus particulièrement, un matériau de ce genre est un matériau composite de résine triazine et de fibres de carbone tel que celui décrit dans le brevet
DE 29 41 369 pour la fabrication de prothèses.
La figure 2 représente la répartition des forces dans un ensemble prothèse/os avec une représentation schématique de la rotule du fémur 14, l'os restant étant désigné par la référence 15 l Ia charge appliquée P produit dans la tige de prothèse 1, un moment de flexion, d'o
résulte dans la zone B de l'os, une charge supplémentaire.
Celle-ci peut être amoindrie par une absorption des forces de traction dans la zone A, laquelle est obtenue au moyen des nervures 12 de décharge de traction prévues sur la face supérieure 6 de la tige 1 lorsque l'os, comme mentionné plus haut, croit à l'intérieur des encoches L'os qui croit dans les encoches 11 entre les nervures 12 absorbe sur une grande surface, les forces de traction exercées sur les faces latérales de l'implant et il décharge-ainsi le c 8 té médian, notamment la zone critique B.
2539295;

Claims (3)

REVEND ICATIONS
1 ) Tige d'endoprothèse notamment pour une prothèse d'articulation de la hanche, avec effet de décharge des forces de traction, caractérisée par des encoches profondes ( 11) avec entre elles/des nervures ( 12) prévues sur la face supérieure ( 6) dans la partie supérieure de
la tige ( 1).
) Tige d'endoproth&se suivant la revendica-
tion 1, caractérisée en ce que les encoches ( 11) sont interrompues en direction perpendiculaire à la direction longitudinale de la tige ( 1), pour former une nervure continue ( 13) s'étendant au milieu de la largeur de la
face supérieure ( 6) de la tige ( 1).
3 ) Tige d'endoprothèse suivant l'une des
revendications 1 ou 2, caractérisée en ce que la face
supérieure ( 6) de la tige ( 1) est pourvue de bossages ( 7) pour absorption des forces de traction, et/ou la face inférieure ( 4) de la tige ( 1) et également pourvue de bossages ( 5) pour absorption des forces de pression, et/ou
les faces latérales ( 8) de la tige sont pourvues d'en-
coches ( 9) pour l'absorption de forces.
4 ) Tige d'endoprothése suivant l'une quel-
conque des revendications 1 à 3, caractérisée en ce que
la tige ( 1) est constituée-en un matériau composite de
résine triazine et de fibres de carbone.
FR8316919A 1983-01-18 1983-10-24 Tige d'endoprothese, notamment pour prothese d'articulation de la hanche Granted FR2539295A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833301415 DE3301415A1 (de) 1983-01-18 1983-01-18 Endoprothesenschaft

Publications (2)

Publication Number Publication Date
FR2539295A3 true FR2539295A3 (fr) 1984-07-20
FR2539295B3 FR2539295B3 (fr) 1984-12-28

Family

ID=6188506

Family Applications (1)

Application Number Title Priority Date Filing Date
FR8316919A Granted FR2539295A3 (fr) 1983-01-18 1983-10-24 Tige d'endoprothese, notamment pour prothese d'articulation de la hanche

Country Status (5)

Country Link
US (1) US4535487A (fr)
CH (1) CH661862A5 (fr)
DE (1) DE3301415A1 (fr)
FR (1) FR2539295A3 (fr)
IT (1) IT8420470V0 (fr)

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EP0427902A1 (fr) * 1989-11-16 1991-05-22 SULZER Medizinaltechnik AG Tige rectiligne pour prothèse d'articulation de la hanche
FR2827155A1 (fr) * 2001-07-16 2003-01-17 Biomet Merck France Tige femorale pour prothese de hanche
EP1472997A3 (fr) * 2001-10-24 2004-11-10 James B. Grimes Prothèse
FR2855396A1 (fr) * 2003-06-02 2004-12-03 Nikola Despot Tige femorale autostable pour prothese de la hanche pour l'homme ou tous autres autres animaux, en particulier le chien

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SE455155B (sv) * 1986-02-12 1988-06-27 Inst For Tillempad Bioteknolog Skruvformat festelement for permanent forankring i benvevnad
US4714470A (en) * 1986-02-19 1987-12-22 Zimmer, Inc. Grooved prosthetic implant
US5192330A (en) * 1987-01-20 1993-03-09 Smith & Nephew Richards, Inc. Orthopedic device of biocompatible polymer with oriented fiber reinforcement
US4795472A (en) * 1987-01-28 1989-01-03 Zimmer, Inc. Prosthesis with enhanced surface finish
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US5062854A (en) * 1988-10-07 1991-11-05 Pfizer Hospital Products Group Prosthetic device and method of implantation
US5002580A (en) * 1988-10-07 1991-03-26 Pfizer Hospital Products Group, Inc. Prosthetic device and method of implantation
US5147408A (en) * 1988-10-07 1992-09-15 Pfizer Hospital Products Group, Inc. Prosthetic device and method of implantation
DE3921030C2 (de) * 1989-06-27 1994-11-24 Klaus Dipl Ing Kleinhoff Endoprothese zum partiellen Ersatz von Knochen, insbesondere Hüftgelenkendoprothese
US5290311A (en) * 1990-01-21 1994-03-01 Friedrich Baumann Femoral head shaft prosthesis
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EP0607287B1 (fr) * 1991-10-07 1999-01-13 Boehringer Mannheim Corporation Implant femoral de hanche de rigidite reduite
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EP0427902A1 (fr) * 1989-11-16 1991-05-22 SULZER Medizinaltechnik AG Tige rectiligne pour prothèse d'articulation de la hanche
CH680110A5 (fr) * 1989-11-16 1992-06-30 Sulzer Ag
US5133770A (en) * 1989-11-16 1992-07-28 Sulzer Brothers Limited Shaft for prosthesis
FR2827155A1 (fr) * 2001-07-16 2003-01-17 Biomet Merck France Tige femorale pour prothese de hanche
EP1472997A3 (fr) * 2001-10-24 2004-11-10 James B. Grimes Prothèse
FR2855396A1 (fr) * 2003-06-02 2004-12-03 Nikola Despot Tige femorale autostable pour prothese de la hanche pour l'homme ou tous autres autres animaux, en particulier le chien

Also Published As

Publication number Publication date
US4535487A (en) 1985-08-20
FR2539295B3 (fr) 1984-12-28
DE3301415A1 (de) 1984-07-19
IT8420470V0 (it) 1984-01-10
CH661862A5 (de) 1987-08-31

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