FR2768916A1 - Surgical staple for tibial osteotomy - Google Patents

Surgical staple for tibial osteotomy Download PDF

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Publication number
FR2768916A1
FR2768916A1 FR9712313A FR9712313A FR2768916A1 FR 2768916 A1 FR2768916 A1 FR 2768916A1 FR 9712313 A FR9712313 A FR 9712313A FR 9712313 A FR9712313 A FR 9712313A FR 2768916 A1 FR2768916 A1 FR 2768916A1
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FR
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Application
Patent type
Prior art keywords
button
characterized
osteotomy
clip
parts
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
FR9712313A
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French (fr)
Other versions
FR2768916B1 (en )
Inventor
Yves Seti
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TRANSYSTEME SA
Original Assignee
TRANSYSTEME SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/14Surgical saws ; Accessories therefor
    • A61B17/15Guides therefor
    • A61B17/151Guides therefor for corrective osteotomy
    • A61B17/152Guides therefor for corrective osteotomy for removing a wedge-shaped piece of bone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064Surgical staples, i.e. penetrating the tissue
    • A61B17/0642Surgical staples, i.e. penetrating the tissue for bones, e.g. for osteosynthesis or connecting tendon to bone
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/68Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/80Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8095Wedge osteotomy devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58Surgical 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
    • A61B17/88Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/92Impactors or extractors, e.g. for removing intramedullary devices
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831Material properties
    • A61B2017/00867Material properties shape memory effect
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/064Surgical staples, i.e. penetrating the tissue
    • A61B2017/0647Surgical staples, i.e. penetrating the tissue having one single leg, e.g. tacks

Abstract

The staple has two branches (1-2) connected by a cross piece (3). At least one of the branches is formed of a memory material so that after placing of the staple in position, it is returned to a position nonparallel to the other branch by heating.

Description

AGRAFE D'OSTEOTOMIE TIBIALE. CLIP OSTEOTOMY TIBIAL.

La présente invention concerne une agrafe d'ostéotomie tibiale destinée à fixer l'une contre l'autre deux parties d'un os après enlèvement d'une portion de celui-ci. The present invention relates to a staple tibial osteotomy for fixing one against the other two parts of a bone after removing a portion thereof.

L'agrafe d'ostéotomie selon l'invention est particulièrement adaptée à l'ostéotomie tibiale destinée à rectifier un tibia mal orienté en lui conférant une valgisation déterminée. The osteotomy staple according to the invention is particularly suitable for the tibial osteotomy for grinding a tibia misguided by giving it a specific valgus.

Il est connu dans l'ostéotomie tibiale d'utiliser des agrafes pour serrer l'une contre l'autre les deux parties de l'os et favoriser ainsi sa soudure par ostéosynthèse. It is known in the tibial osteotomy using staples to tighten one against the other two parts of the bone and thus promote its welding osteosynthesis.

Cependant, les agrafes connues à branches parallèles n assurent pas un bon serrage des deux portions de l'os qui du fait de l'enlèvement d'un coin osseux sont normalement écartées l'une de l'autre et peuvent avoir tendance à revenir à cet écartement. However, staples known parallel branches n not provide a good tightening of the two portions of the bone due to the removal of a bone area are normally separated from each other and may tend to return to this spacing.

La présente invention vise à obvier à ces inconvénient en réalisant une agrafe à capacité de- serrage des deux parties de l'os l'une contre l'autre et qui en outre soit facile à retirer après consolidation de l'os. The present invention aims to overcome these problem by performing a staple capacity de-clamping of the two parts of the bone against each other and also be easy to remove after consolidation of the bone.

A cet effet, l'agrafe d'ostéotomie selon l'invention destinée à fixer l'une contre l'autre deux parties d'un os, par exemple après enlèvement d'une portion de celui-ci pour obtenir une valgisation, ladite agrafe étant constituée de deux branches 1-2 réunies par une traverse 3 se caractérise essentiellement en ce que au moins une des branches est réalisée en un matériau à mémoire de forme préconditionnée en fabrication en sorte qu'après mise en place de l'agrafe, ladite branche puisse prendre par réchauffement une position non parallèle à l'autre branche. To this end, the staple osteotomy according to the invention for fixing one against the other two parts of a bone, for example after removal of a portion thereof to obtain a valgus, said clip consisting of two branches 1-2 joined by a cross member 3 is essentially characterized in that at least one arm is made of a preconditioned shape memory material in manufacture so that after establishment of the clip, said branch can make by heating a non-parallel position to the other branch.

Suivant une autre caractéristique de l'invention, l'agrafe est constituée en deux parties, l'une constituée par une branche et l'autre par la traverse et l'autre branche, les deux parties étant assemblées par un moyen amovible autorisant leur séparation pour permettre d'enlever l'agrafe de l'os. According to another feature of the invention, the clip consists of two parts, one formed by a leg and the other by the cross member and the other branch, the two parts being assembled by a removable means allowing their separation to allow removal of the clip from the bone.

D'autres avantages et caractéristiques de l'invention apparaitront à la lecture de la description ciaprès d'une forme de réalisation de l'invention donnée à titre d'exemple non limitatif et illustrée par les dessins joints dans lesquels - la figure 1 est une vue de l'agrafe selon l'invention, - les figures 2 à 8 représentent schématiquement la mise en place de l'agrafe selon l'invention. Other advantages and features of the invention appear on reading the description hereafter of an embodiment of the invention given by way of nonlimiting example and illustrated by the accompanying drawings in which - Figure 1 is a view of the clip according to the invention, - figures 2 to 8 schematically represent the establishment of the clip according to the invention.

Telle que représentée aux dessins annexés (figures 1 et 8), l'agrafe selon l'invention est constituée de deux branches 1-2 réunies par une traverse 3. As shown in the accompanying drawings (Figures 1 and 8), the clip according to the invention consists of two branches 1-2 joined by a cross member 3.

Les deux branches 1-2 sont de même longueur et sont en position de repos ou de mise en place sensiblement parallèles. 1-2 the two arms have the same length and are in the rest position or setting up substantially parallel.

Avantageusement, selon une des caractéristiques essentielles de l'invention, au moins une des branches est réalisée en un matériau à mémoire de forme, ladite branche étant préconditionnée en fabrication en sorte qu'après mise en place dans l'os, elle puisse prendre par réchauffement une position non parallèle à l'autre branche. Advantageously, according to an essential characteristic of the invention, at least one arm is made of a shape memory material, said branch being preconditioned in fabrication so that, after introduction into the bone, it can be taken by warming a non-parallel position to the other branch.

Avantageusement, la branche à mémoire de forme est préconditionnée pour s'orienter, sous l'action du réchauffement obtenue par circulation de sérum physiologique chauffé, en pincement vers l'autre branche suivant un axe sécant à celle-ci, ce qui contribue à reserrer les portions de l'os à rapprocher pour leur consolidation. Advantageously, the shape memory branch is preconditioned to move, under the action of warming obtained by circulation of heated saline, pinching to the other arm along an axis intersecting the latter, which contributes to tighten the portions of the bone closer to their consolidation.

L'agrafe selon l'invention est constituée en deux parties fixées l'une à l'autre de manière à former une pièce unique pour la mise en place et pouvant être séparées l'une de l'autre pour permettre ltenlèvement. The clip according to the invention consists in two parts attached to each other so as to form a single part for the introduction and being separated from each other to allow ltenlèvement.

A cet effet, la première partie comprend la branche supérieure 1 et la deuxième partie comprend la branche inférieure 2 à mémoire de forme et la traverse 3. For this purpose, the first portion comprises the upper 1 and the second leg portion comprises the lower arm 2 of shape memory and the cross member 3.

La fixation des deux parties s'effectue par un moyen, soit amovible, soit sécable au niveau de la traverse 3 et d'une patte arrière 4 de la branche 1. Fixing the two parts is effected by means or removable or breakable at the cross member 3 and a rear leg 4 of the branch 1.

Ce moyen peut être un système à vis 5 et écrou, l'écrou pouvant être porté par la patte 4 ou réalisé par un filetage dans l'épaisseur de celle-ci. This means may be a screw and nut system 5, the nut can be carried by the tab 4 or made by a thread in the thickness thereof.

De préférence, l'agrafe est réalisée en un métal biocompatible. Preferably, the clip is made of a biocompatible metal.

Comme représentée aux dessins, chacune des branches est constituée par une bande de métal. As shown in the drawings, each of the legs is constituted by a metal strip.

La bande supérieure 1 présente à l'arrière une patte 4 conformée en chape entre les ailes de laquelle se loge l'extrémité de la traverse 3. The upper band 1 has at the rear a lug 4 formed in yoke between the flanges of which fits the end of the cross member 3.

La bande inférieure 2 est une bande plane de même largeur que la précédente dont une portion est repliée à angle droit pour réaliser la traverse 3. The lower web 2 is a flat strip of the same width as the preceding one portion is folded at a right angle to achieve the cross member 3.

Avantageusement, la traverse 3 subit un double pli 6 de déviation. Advantageously, the cross member 3 undergoes a double fold 6 of deflection.

Les figures 2 à 8 illustrent la réalisation de l'ostéotomie tibiale et la mise en place de l'agrafe selon l'invention. Figures 2-8 illustrate the embodiment of the tibial osteotomy and the establishment of the clip according to the invention.

Après repérage (fig. 2), un dispositif viseur 7 est présenté sur l'os et deux broches de maintien 8 sont mises en place. After identification (Fig. 2), a viewfinder device 7 is presented on the bone and the two holding pins 8 are implemented.

Un sciage par un trait de scie est réalisé en 9 au-dessus du viseur. Sawing by a saw cut is made in 9 above the viewfinder.

En figure 3 est représentée la fixation de la partie haute 10 du viseur et le défonceur 11 qui est utilisé jusqu'à la graduation désirée. In figure 3 is shown the fixing of the upper part 10 of the viewfinder 11 and the digger which is used to the desired scale.

En figure 4 est représenté le sciage du coin osseux 12 au moyen du viseur. In Figure 4 is shown sawing bone wedge 12 by means of the viewfinder.

Le sciage s'effectue suivant un premier trait 13 jusqu'à une profondeur correspondant à la longueur de l'agrafe. The sawing takes place along a first line 13 to a depth corresponding to the length of the clip.

Le sciage s'effectue suivant un deuxième trait 14 correspondant à l'angle de valgisation choisi. The sawing takes place along a second line 14 corresponding to the selected valgus angle.

Après retrait du viseur, le coin osseux 12 est extrait (figure 5), la jambe est alors portée doucement au valgus par une rotation schématisée par la flèche 15, ce qui a pour effet de rapprocher les sections 13/14 (figure 6). After removing the viewfinder, the bone wedge 12 is removed (Figure 5), the leg is then slowly brought to a valgus rotation schematically by the arrow 15, which has the effect of bringing 13/14 sections (Figure 6).

Pendant toute cette procédure, le défonceur est en position. During this procedure, the digger is in position.

Au stade suivant (figure 7), le viseur 7 est à nouveau monté sur le défonceur 11. In the next stage (Figure 7), the viewfinder 7 is again mounted on the digger 11.

Un trait de scie est réalisé sous le viseur en 16 pour affaiblir la paroi corticale de l'os. A saw cut is made in the viewfinder 16 to weaken the cortical wall of the bone.

Le défonceur est alors retiré et l'agrafe est mise en place au moyen de la pince porte-agrafe 17 puis elle est enfoncée par impact (figure 8). The Digger is then removed and the clip is put in place by the staple holder clamp 17 then is pressed by impact (Figure 8).

Claims (5)

    REVENDICATIONS
  1. 1. Agrafe d'ostéotomie tibiale destinée à fixer l'une contre l'autre deux parties d'un os par exemple après enlèvement d'une portion de celui-ci, ladite agrafe étant constituée de deux branches (1-2) réunies par une traverse (3) caractérisée en ce que au moins une des branches est réalisée en un matériau à mémoire de forme en sorte qu'après mise en place de l'agrafe, elle puisse prendre par réchauffement une position non parallèle à l'autre branche qui interdise son retrait. 1. Button tibial osteotomy for fixing one against the other two parts of a bone, for example after removal of a portion thereof, said clip comprising two legs (1-2) joined by a cross member (3) characterized in that at least one arm is made of a shape memory material so that, after installation of the clip, it can be taken by heating a non-parallel position to the other branch prohibiting its withdrawal.
  2. 2. Agrafe d'ostéotomie selon la revendication 1 caractérisée en ce qu'elle est constituée en deux parties fixées ensemble par un moyen amovible permettant de séparer l'une de l'autre les deux parties pour permettre leur enlèvement. 2. Button osteotomy according to claim 1 characterized in that it consists in two parts attached together by a removable means for separating from each other the two parts to allow their removal.
  3. 3. Agrafe d'ostéotomie selon les revendications 1 et 2 caractérisée en ce que l'une des branches (1) et la traverse (3) sont reliées à une patte (4) de l'autre branche (2) par vis (5). 3. Button osteotomy according to claims 1 and 2 characterized in that one of the branches (1) and the crossbar (3) are connected to a lug (4) of the other leg (2) by screws (5 ).
  4. 4. Agrafe d'ostéotomie selon les revendications 1, 2 et 3 caractérisée en ce que la branche (1) est réalisée en un métal à mémoire de forme. 4. Button osteotomy according to claims 1, 2 and 3 characterized in that the leg (1) is made of a shape memory metal.
  5. 5. Agrafe d'ostéotomie selon les revendications 1 et 44 caractérisée en ce que la branche (2) fixée à la traverse (3) est réalisée en un métal bio-compatible. 5. Button osteotomy according to claims 1 and 44 characterized in that the arm (2) attached to the crosspiece (3) is made of a bio-compatible metal.
FR9712313A 1997-10-01 1997-10-01 Tibial osteotomy staple Expired - Fee Related FR2768916B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9712313A FR2768916B1 (en) 1997-10-01 1997-10-01 Tibial osteotomy staple

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Application Number Priority Date Filing Date Title
FR9712313A FR2768916B1 (en) 1997-10-01 1997-10-01 Tibial osteotomy staple

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FR2768916B1 FR2768916B1 (en) 2000-02-25

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