EP1538248A1 - Warp knit fabric for surgical application - Google Patents

Warp knit fabric for surgical application Download PDF

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Publication number
EP1538248A1
EP1538248A1 EP04356190A EP04356190A EP1538248A1 EP 1538248 A1 EP1538248 A1 EP 1538248A1 EP 04356190 A EP04356190 A EP 04356190A EP 04356190 A EP04356190 A EP 04356190A EP 1538248 A1 EP1538248 A1 EP 1538248A1
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EP
European Patent Office
Prior art keywords
knit
surgical
chain
knit according
pattern
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.)
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EP04356190A
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German (de)
French (fr)
Inventor
Jean-Marc Beraud
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Analytic Biosurgical Solutions - ABISS
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Analytic Biosurgical Solutions - ABISS
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Application filed by Analytic Biosurgical Solutions - ABISS filed Critical Analytic Biosurgical Solutions - ABISS
Publication of EP1538248A1 publication Critical patent/EP1538248A1/en
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    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B21/00—Warp knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
    • D04B21/10—Open-work fabrics
    • D04B21/12—Open-work fabrics characterised by thread material
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2403/00—Details of fabric structure established in the fabric forming process
    • D10B2403/03—Shape features
    • D10B2403/031—Narrow fabric of constant width
    • D10B2403/0311—Small thickness fabric, e.g. ribbons, tapes or straps
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2509/00—Medical; Hygiene
    • D10B2509/08—Hernia repair mesh

Definitions

  • the present invention relates to the technical field of fabrics or tablecloths textile for surgical use intended to be implanted to reinforce regions muscular, soft tissues or even walls of internal organs of the body human.
  • such plates are susceptible to release free particles that can affect the healing of tissues implantation.
  • these strips have the disadvantage of being deformed and wound on themselves when a force or a longitudinal traction is exerted on them.
  • the knit according to the application WO 02 065 944 then has a type of armor simple knit to a bar or even an armor of atlas type presenting too much great sensitivity to unraveling so that its features can be affected when the surgeon was brought during the implantation procedure, to spoil the tape.
  • US Patent 5,456,711 has also proposed a knit chain for use made of compatible materials with two-bar weave plus commonly known as queenscord. This knit has the peculiarity to offer a better resistance to unraveling than the previous knitting but present nevertheless the disadvantage of not offering porosity favoring a rapid process healing.
  • the invention relates to a utility chain knit surgical biocompatible son characterized in that it has an armor of halftone chain.
  • the knit according to the invention has a chain pattern, closed or open, associated with at least one binding pattern and, preferably, only one binding pattern.
  • such a halftone warp armor offers a factor of opening and pores of sufficient size to promote colonization fibroblast.
  • a halftone chain armor is particularly favorable to obtain a blocked knit very little demaillable and resistant so well any cuts that may be made accidentally or voluntary by the surgeon during implantation.
  • the knit chain is made so to present a motif of closed chain of the type 1-0 or, incidentally, of cha ⁇ nette 1-0 / 0-1 open type and a 0-0 / 3-3 type binding pattern.
  • the knit will have a pattern of closed chain, associated with at least one binding pattern.
  • the knit is made so as to have a closed chain type 1-0 pattern and a binding pattern of the type 1-0 / 2-3 which reinforces the knitting nature of knitting.
  • a chain knit according to the invention can be made on any type of loom. knitting adapted such as for example, knitting looms comprising two bars such as RACHEL trades or CROCHET trades.
  • one of the bars then provides the chain pattern while the other bar provides the binding pattern.
  • the chain knit according to the invention is made in such a way as to present pores the size of which is in a dimension of at least greater than 74 ⁇ m and preference, but not necessarily, in all the dimensions between 20 ⁇ m and 80 ⁇ m.
  • the chain knit according to the invention is made in the form a clear selvedge ribbon that will preferably but not necessarily a width of between 8 mm and 55 mm, and more particularly preferred, between 8 mm and 15 mm.
  • a reinforcement tape for the treatment of cystocele or urinary incontinence of effort comprising at least one length of knit according to the invention.
  • the warp knit according to the invention is produced so as to have a weight per unit area of between 28 g / m 2 and 100 g / m 2 and, more preferably, between 30 g / m 2 and 40 g / m 2 .
  • the knit chain for surgical use can be made of biocompatible synthetic materials such as, for example, polyamide yarns, polyoxymethylene, polyetherketone, polypropylene, polyethylene or polyester.
  • biocompatible synthetic materials such as, for example, polyamide yarns, polyoxymethylene, polyetherketone, polypropylene, polyethylene or polyester.
  • the constituent yarns of the knit chain according to the invention will be selected from polypropylene, polyester and polyamide. It should be noted that in a more particularly preferred embodiment, the chain knit according to the invention, would be made of polypropylene son.
  • Different types of yarn can be used for making a knit according to the invention, such as, for example, multi-filament yarns or yarns mono filaments.
  • the monofilament yarns will be retained because of their low proportion to release particles.
  • the warp knit according to the invention will be knitted using monofilament yarns whose diameter is between 0.017 mm and 0.15 mm and preferably between 0.05 mm and 0.10 mm.
  • the knit chain for surgical use according to the invention will undergo a thermofixation primer at a temperature between 120 ° C and 140 ° C and, preferably between 125 ° C and 135 ° C.
  • Such a heat-setting primer can be made either by steaming or by calendering.
  • the invention also relates to the use of a knit according to the invention for performing an implantable prosthesis and, preferably, the user of a knit according to the invention in the form of a smooth selvedge ribbon.
  • the invention also relates to the use of a knit according to the invention for reinforce an inner region of the human body as part of a surgical implantation.
  • Fig. 1 is a picture illustrating a first embodiment of a chain knit according to the invention.
  • Fig. 2 is a detail view illustrating the entanglement of the chain knit stitches according to the invention.
  • Fig. 3 is an optical microscope view of the warp knit, as illustrated in FIG. 1.
  • Fig. 4 is a simplified representation of the structure of the warp knit, as illustrated in FIGS. 1 and 2.
  • Fig. 5 is a simplified representation of an alternative embodiment of a chain knit according to the invention.
  • the invention aims to provide a chain knit, as shown in FIG. 1 and designated in its direction by the reference 1 , particularly suitable for surgical use and, in particular, the cystocele treatment protocol by strengthening the muscles in the pelvic area, in order to support the ureter by means of a strip .
  • a warp knit according to the invention will be made by means of threads biocompatible, such as, for example, made of synthetic material such as polyamide, polyoximethylene, polyetherketone, polypropylene, polyethylene or polyester.
  • the knit 1 can be made of any type of yarn, such as, for example, multi-filament yarns and mono- or multi-materials.
  • the knit 1 according to the invention will rather be made of monofilament yarns whose diameter will be between 0.017 mm and 0.15 mm and, preferably, between 0.05 mm and 0.10 mm.
  • the knit 1 according to the invention will be made from polypropylene monofilament yarns having a diameter of about 0.08 mm.
  • the warp knit 1 is preferably knitted in the form of a band or ribbon having selvedges 2 and 3 smooth.
  • the knit 1 will be made in the form of a band having a width l between 8 mm and 55 mm and, more preferably, between 8 mm and 15 mm, in order to achieve support strips for the treatment of the cystocele for example.
  • selvedges 2 and 3 are made in a clean manner so as to have no free filaments liable to injure the tissues when they are put into place. place the strip.
  • the knit 1 according to the invention is made to have a low elasticity or even, if possible, a lack of elasticity for setting up without tension.
  • the knitting is carried out on the basis of a halftone chain weave, knitted on a RACHEL loom presenting at least two guide bars or, again, a hook loom.
  • the knit 1 is achieved by adopting the binding scheme, as shown schematically in FIG. 2.
  • the wire 10 represents the pattern made by the first bar corresponding to a closed chain which has a scale of 1-0 type.
  • the wire 12 shown in phantom, shows the binding made by means of the second guide bar according to a scale of 0-0 / 3-3 type.
  • the scale represents the jumps or throws of the guide bars from one rank to another, the coordinate 1 corresponding to an intermediate position between the first two needle columns on the left.
  • the knit obtained then has a structure seen under a microscope as illustrated in FIG. 3.
  • the structure has, among other advantageous features, the property to be undemaillable, so that the surgeon can make several cuts partial, without this being likely to lead to complete unraveling of the whole of the implanted knit.
  • the structure of the halftone chain armor has the advantage of offering pores that have a size, in at least one of their three dimensions, greater than 74 microns.
  • the main pores 15 have a rectangular shape whose width l 15 is greater than 74 .mu.m.
  • the knit according to the invention will preferably be made so as to have a surface weight of the order of 35 g / m 2 , knowing that this weight may be between 28 g / m 2 and 100 g / m 2 , such a weight being favorable to a good implantation.
  • Fig. 4 in which the same references 10 and 12 have been adopted for the threads corresponding to the two guide bars, illustrates an embodiment variant with an open chain pattern of scale 1-0 / 0-1 and type 0 binding pattern. -0 / 3-3.
  • the knit will be made in such a way as to to present a structure perfectly indaaillable.
  • the second bar supporting the wire 12 , will then be animated with a gimbal movement symmetrical with respect to the chain bar and will confer, for example, an armor whose scale will be 1-0 for the chain and 1-0 / 2-3 for the binding yarn 12 , as schematically illustrated in FIG. 5 .

Abstract

Chain stitch knit in biocompatible thread for surgical use with a woven chain stitch weave. An independent claim is included for a reinforcement strip for the treatment of cystocele which comprises a length of the knit.

Description

La présente invention concerne le domaine technique des tissus ou nappes textiles à usage chirurgical destinés à être implantés pour assurer le renfort de régions musculaires, tissulaires molles ou encore de parois d'organes internes du corps humain.The present invention relates to the technical field of fabrics or tablecloths textile for surgical use intended to be implanted to reinforce regions muscular, soft tissues or even walls of internal organs of the body human.

Dans le domaine ci-dessus, il est connu de mettre en oeuvre des plaques de matériaux biocompatibles, en fibres non tissées ou en tissus à fils croisés qui sont découpés par le chirurgien en fonction de son besoin.In the above field, it is known to use plates of biocompatible materials, non-woven fibers or cross-threaded fabrics that are cut by the surgeon according to his need.

Si de telles plaques de matières textiles permettent effectivement de réaliser des moyens de renforts souples implantables, elles présentent néanmoins certains inconvénients. Tout d'abord, en raison de leurs découpes, les plaques de renfort ainsi obtenues offrent des bords qui sont susceptibles de blesser les tissus au niveau desquels elles sont placées.If such sheets of textile materials actually make it possible to achieve flexible implantable reinforcement means, they nevertheless have certain disadvantages. First, because of their cutouts, the reinforcing plates as well obtained provide edges that are likely to injure tissue at the level which they are placed.

Par ailleurs, compte tenu de leur structure, de telles plaques sont susceptibles de relâcher des particules libres pouvant affecter la cicatrisation des tissus d'implantation. De plus, dans le cadre de certaines utilisations telles que, par exemple, la réalisation de bandelettes pour le traitement de l'incontinence urinaire d'effort, ces bandelettes présentent l'inconvénient de se déformer et de s'enrouler sur elles-mêmes lorsqu'un effort ou une traction longitudinale est exercée sur celles-ci.Moreover, given their structure, such plates are susceptible to release free particles that can affect the healing of tissues implantation. In addition, for certain uses such as, for example, example, the production of strips for the treatment of urinary incontinence of effort, these strips have the disadvantage of being deformed and wound on themselves when a force or a longitudinal traction is exerted on them.

De même, de telles bandelettes découpées dans des tissus à fils croisés présentent une certaine élasticité qui les rendent impropres à une utilisation dans le cadre d'une implantation sans tension résiduelle comme cela est plus particulièrement recherché dans le cadre des nouveaux protocoles de traitement de l'incontinence urinaire d'effort.Similarly, such strips cut in cross-threaded fabrics have a certain elasticity that renders them unsuitable for use in framework of an implantation without residual voltage as this is more particularly sought after in the context of the new treatment protocols for urinary stress incontinence.

Afin de remédier à cet inconvénient, une demande de brevet WO 02065944 a proposé un tricot chaíne à usage chirurgical réalisé en fils biocompatibles et présentant au niveau de ses lisières longitudinales, des boucles libres destinées à former des éléments d'implantation.In order to remedy this drawback, a patent application WO 02065944 proposed a chain knit for surgical use made of biocompatible yarns and presenting at its longitudinal edges, free loops intended for form implantation elements.

Le tricot, selon la demande WO 02 065 944 présente alors une armure de type tricot simple à une barre ou encore une armure de type atlas présentant une trop grande sensibilité au démaillage de sorte que ses caractéristiques peuvent être affectées lorsque le chirurgien a été amené au cours de la procédure d'implantation, à abímer la bandelette.The knit according to the application WO 02 065 944 then has a type of armor simple knit to a bar or even an armor of atlas type presenting too much great sensitivity to unraveling so that its features can be affected when the surgeon was brought during the implantation procedure, to spoil the tape.

Un brevet US 5 456 711 a également proposé un tricot chaíne à usage chirurgical en matériaux compatibles présentant une armure à deux barres plus communément connue sous le nom de queenscord. Ce tricot présente la particularité d'offrir une meilleure résistance au démaillage que le tricot précédent mais présente néanmoins l'inconvénient de ne pas offrir une porosité favorisant un processus rapide de cicatrisation.US Patent 5,456,711 has also proposed a knit chain for use made of compatible materials with two-bar weave plus commonly known as queenscord. This knit has the peculiarity to offer a better resistance to unraveling than the previous knitting but present nevertheless the disadvantage of not offering porosity favoring a rapid process healing.

Il est donc apparu le besoin de disposer d'un nouveau type de tricot qui soit adapté à une implantation dans le cadre de procédures dites sans tension pour le traitement de la cystocèle ou incontinence urinaire d'effort féminine, qui soit indémaillable et qui soit, par ailleurs, particulièrement favorable à une colonisation fibroplastique rapide afin de favoriser une cicatrisation optimale et sans douleur.It has therefore become apparent that there is a need for a new type of knitting which is suitable for implantation in so-called "no-tension" procedures for the treatment of cystocele or urinary incontinence of female effort, which is indémaillable and which is, moreover, particularly favorable to colonization fast fibroplastic to promote optimal healing and pain free.

Afin d'atteindre cet objectif, l'invention concerne un tricot à chaíne à usage chirurgical en fils biocompatibles caractérisé en ce qu'il présente une armure de chaínette tramée. Ainsi, le tricot selon l'invention présente un motif de chaínette, fermée ou ouverte, associé à au moins un motif de liage et, de préférence, un seul motif de liage.In order to achieve this objective, the invention relates to a utility chain knit surgical biocompatible son characterized in that it has an armor of halftone chain. Thus, the knit according to the invention has a chain pattern, closed or open, associated with at least one binding pattern and, preferably, only one binding pattern.

En effet, il a été constaté qu'une telle armure de chaíne tramée offre un facteur d'ouverture et des pores de dimensions suffisantes pour favoriser la colonisation fibroplastique. Par ailleurs, une telle armure de chaínette tramée est particulièrement favorable à l'obtention d'un tricot bloqué très peu démaillable et résistant donc bien aux éventuelles découpes susceptibles d'y être effectuées de manière accidentelle ou volontaire par le chirurgien lors de l'implantation.Indeed, it has been found that such a halftone warp armor offers a factor of opening and pores of sufficient size to promote colonization fibroblast. Moreover, such a halftone chain armor is particularly favorable to obtain a blocked knit very little demaillable and resistant so well any cuts that may be made accidentally or voluntary by the surgeon during implantation.

Selon une caractéristique de l'invention, le tricot chaíne est réalisé de manière à présenter un motif de chaínette fermée du type 1-0 ou, accessoirement, de chaínette ouverte du type 1-0/0-1 et un motif de liage du type 0-0/3-3.According to one characteristic of the invention, the knit chain is made so to present a motif of closed chain of the type 1-0 or, incidentally, of chaínette 1-0 / 0-1 open type and a 0-0 / 3-3 type binding pattern.

Dans une forme préférée de réalisation, le tricot présentera un motif de chaínette fermée, associé à au moins un motif de liage.In a preferred embodiment, the knit will have a pattern of closed chain, associated with at least one binding pattern.

Selon une autre caractéristique de l'invention, le tricot est réalisé de manière à présenter un motif de chaínette fermée de type 1-0 et un motif de liage du type 1-0/2-3 qui renforce le caractère indémaillable du tricot. According to another characteristic of the invention, the knit is made so as to have a closed chain type 1-0 pattern and a binding pattern of the type 1-0 / 2-3 which reinforces the knitting nature of knitting.

Un tricot chaíne selon l'invention, peut être réalisé sur tout type de métier à tricoter adapté tel que par exemple, les métiers à tricoter comprenant deux barres comme les métiers RACHEL ou les métiers CROCHET.A chain knit according to the invention can be made on any type of loom. knitting adapted such as for example, knitting looms comprising two bars such as RACHEL trades or CROCHET trades.

Dans le cadre d'une mise en oeuvre dans un métier à deux barres à passettes, l'une des barres assure alors le motif de chaínette tandis que l'autre barre assure le motif de liage.As part of an implementation in a loom with two bars, one of the bars then provides the chain pattern while the other bar provides the binding pattern.

Afin d'être particulièrement favorable au mécanisme de colonisation fibroplastique, le tricot chaíne selon l'invention est réalisé de manière à présenter des pores dont la taille est dans une dimension au moins supérieure à 74 µm et de préférence mais non nécessairement, dans toutes les dimensions comprises entre 20 µm et 80 µm.In order to be particularly favorable to the colonization mechanism fibroplastique, the chain knit according to the invention is made in such a way as to present pores the size of which is in a dimension of at least greater than 74 μm and preference, but not necessarily, in all the dimensions between 20 μm and 80 μm.

De manière préférée, le tricot chaíne selon l'invention, est réalisé sous la forme d'un ruban à lisières nettes qui présentera de préférence mais non nécessairement, une largeur comprise entre 8 mm et 55 mm, et de manière plus particulièrement préférée, comprise entre 8 mm et 15 mm. Un tel mode de réalisation du tricot chaíne selon l'invention le rend alors particulièrement adapté à la réalisation d'une bandelette de renfort pour le traitement de la cystocèle ou incontinence urinaire d'effort, comprenant au moins une longueur de tricot selon l'invention.Preferably, the chain knit according to the invention is made in the form a clear selvedge ribbon that will preferably but not necessarily a width of between 8 mm and 55 mm, and more particularly preferred, between 8 mm and 15 mm. Such an embodiment of the chain knit according to the invention makes it particularly suitable for the realization of a reinforcement tape for the treatment of cystocele or urinary incontinence of effort, comprising at least one length of knit according to the invention.

Selon une autre caractéristique de l'invention, et toujours en vue d'obtenir des résultats de cicatrisation optimum, le tricot chaíne selon l'invention, est réalisé de manière à présenter un poids surfacique compris entre 28 g/m2 et 100 g/m2 et, de manière plus particulièrement préférée, compris entre 30 g/m2 et 40 g/m2.According to another characteristic of the invention, and always with a view to obtaining optimum healing results, the warp knit according to the invention is produced so as to have a weight per unit area of between 28 g / m 2 and 100 g / m 2 and, more preferably, between 30 g / m 2 and 40 g / m 2 .

Selon l'invention, le tricot chaíne à usage chirurgical peut être réalisé en fils de matériaux synthétiques biocompatibles tels que, par exemple, en fils de polyamide, polyoxyméthylène, polyethercétone, polypropylène, polyéthylène ou polyester. De manière préférée mais non strictement nécessaire, les fils constitutifs du tricot chaíne selon l'invention, seront choisis parmi le polypropylène, le polyester et le polyamide. Il est à noter que dans une forme de réalisation plus particulièrement préférée, le tricot chaíne selon l'invention, serait réalisé en fils de polypropylène.According to the invention, the knit chain for surgical use can be made of biocompatible synthetic materials such as, for example, polyamide yarns, polyoxymethylene, polyetherketone, polypropylene, polyethylene or polyester. Of preferred but not strictly necessary way, the constituent yarns of the knit chain according to the invention, will be selected from polypropylene, polyester and polyamide. It should be noted that in a more particularly preferred embodiment, the chain knit according to the invention, would be made of polypropylene son.

Différents types de fils peuvent être utilisés pour la réalisation d'un tricot chaíne selon l'invention, tels que par exemple, des fils multi-filaments ou des fils mono filaments. De préférence, les fils mono-filaments seront retenus en raison de leur faible proportion à relâcher des particules. Different types of yarn can be used for making a knit according to the invention, such as, for example, multi-filament yarns or yarns mono filaments. Preferably, the monofilament yarns will be retained because of their low proportion to release particles.

Ainsi, dans une forme préférée de réalisation, le tricot chaíne selon l'invention, sera tricoté au moyen de fils mono-filaments dont le diamètre est compris entre 0,017 mm et 0,15 mm et, de préférence, compris entre 0,05 mm et 0,10 mm.Thus, in a preferred embodiment, the warp knit according to the invention, will be knitted using monofilament yarns whose diameter is between 0.017 mm and 0.15 mm and preferably between 0.05 mm and 0.10 mm.

Selon une autre caractéristique de l'invention, afin de présenter une grande stabilité dimensionnelle, le tricot chaíne à usage chirurgical selon l'invention, subira un apprêt de thermofixation à une température comprise entre 120 °C et 140 °C et, de préférence, comprise entre 125 °C et 135 °C.According to another characteristic of the invention, in order to present a large Dimensional stability, the knit chain for surgical use according to the invention, will undergo a thermofixation primer at a temperature between 120 ° C and 140 ° C and, preferably between 125 ° C and 135 ° C.

Un tel apprêt de thermofixation pourra être réalisé soit par vaporisage, soit par calandrage.Such a heat-setting primer can be made either by steaming or by calendering.

L'invention concerne, également, l'utilisation d'un tricot selon l'invention pour la réalisation d'une prothèse implantable et, de manière préférée, l'utilisateur d'un tricot selon l'invention se présentant sous la forme d'un ruban à lisière lisse.The invention also relates to the use of a knit according to the invention for performing an implantable prosthesis and, preferably, the user of a knit according to the invention in the form of a smooth selvedge ribbon.

L'invention concerne aussi l'utilisation d'un tricot selon l'invention pour assurer le renfort d'une région interne du corps humain, dans le cadre d'une implantation chirurgicale.The invention also relates to the use of a knit according to the invention for reinforce an inner region of the human body as part of a surgical implantation.

Diverses autres caractéristiques de l'invention ressortent de la description ci-dessous effectuée en référence aux dessins annexés qui illustrent des formes préférées de réalisation d'un tricot chaíne à usage chirurgical selon l'invention.Various other features of the invention appear from the description below with reference to the accompanying drawings which illustrate forms preferred embodiments of a knit chain for surgical use according to the invention.

La fig. 1 est une photo illustrant une première forme de réalisation d'un tricot chaíne selon l'invention. Fig. 1 is a picture illustrating a first embodiment of a chain knit according to the invention.

La fig. 2 est une vue de détails illustrant l'enchevêtrement des mailles du tricot chaíne selon l'invention. Fig. 2 is a detail view illustrating the entanglement of the chain knit stitches according to the invention.

La fig. 3 est une vue au microscope optique du tricot chaíne, tel qu'illustré à la fig. 1. Fig. 3 is an optical microscope view of the warp knit, as illustrated in FIG. 1.

La fig. 4 est une représentation simplifiée de la structure du tricot chaíne, telle qu'illustrée aux fig. 1 et 2. Fig. 4 is a simplified representation of the structure of the warp knit, as illustrated in FIGS. 1 and 2.

La fig. 5 est une représentation simplifiée d'une variante de réalisation d'un tricot chaíne selon l'invention. Fig. 5 is a simplified representation of an alternative embodiment of a chain knit according to the invention.

L'invention vise à proposer un tricot chaíne, tel qu'illustré à la fig. 1 et désigné dans son sens par la référence 1, particulièrement adapté à un usage chirurgical et, notamment, au protocole de traitement de la cystocèle par renforcement des muscles dans la zone pelvienne, en vue de soutenir l'uretère au moyen d'une bandelette. The invention aims to provide a chain knit, as shown in FIG. 1 and designated in its direction by the reference 1 , particularly suitable for surgical use and, in particular, the cystocele treatment protocol by strengthening the muscles in the pelvic area, in order to support the ureter by means of a strip .

Ainsi, un tricot chaíne selon l'invention, sera réalisé au moyen de fils biocompatibles, tels que, par exemple, réalisés en matière synthétique comme le polyamide, le polyoximéthylène, le polyéthercétone, le polypropylène, le polyéthylène ou le polyester.Thus, a warp knit according to the invention will be made by means of threads biocompatible, such as, for example, made of synthetic material such as polyamide, polyoximethylene, polyetherketone, polypropylene, polyethylene or polyester.

Selon l'invention, le tricot 1 peut être réalisé en tous types de fils, tels que, par exemple, des fils multi-filaments et mono ou multi-matières.According to the invention, the knit 1 can be made of any type of yarn, such as, for example, multi-filament yarns and mono- or multi-materials.

De manière préférée, le tricot 1 selon l'invention sera plutôt réalisé en fils mono-filaments dont le diamètre sera compris entre 0,017 mm et 0,15 mm et, de manière préférée, ente 0,05 mm et 0,10 mm.Preferably, the knit 1 according to the invention will rather be made of monofilament yarns whose diameter will be between 0.017 mm and 0.15 mm and, preferably, between 0.05 mm and 0.10 mm.

Dans une forme plus particulièrement préférée, le tricot 1 selon l'invention sera réalisé à partir de fils mono-filaments de polypropylène présentant un diamètre de 0,08 mm environ.In a more particularly preferred form, the knit 1 according to the invention will be made from polypropylene monofilament yarns having a diameter of about 0.08 mm.

Comme le montre la fig. 1, le tricot chaíne 1 est, de préférence, tricoté sous la forme d'une bande ou d'un ruban présentant des lisières 2 et 3 lisses. De manière préférée et non strictement nécessaire, le tricot 1 sera réalisé sous la forme d'une bande présentant une largeur l comprise entre 8 mm et 55 mm et, de manière plus particulièrement préférée, entre 8 mm et 15 mm, en vue de réaliser des bandelettes de support pour le traitement de la cystocèle par exemple.As shown in fig. 1, the warp knit 1 is preferably knitted in the form of a band or ribbon having selvedges 2 and 3 smooth. Preferably and not strictly necessary, the knit 1 will be made in the form of a band having a width l between 8 mm and 55 mm and, more preferably, between 8 mm and 15 mm, in order to achieve support strips for the treatment of the cystocele for example.

Comme cela a été décrit ci-dessus, conformément à une forme préférée de réalisation de l'invention, les lisières 2 et 3 sont réalisées de manière nette de façon à ne présenter aucun filament libre susceptible de venir blesser les tissus lors de la mise en place de la bandelette.As has been described above, in accordance with a preferred embodiment of the invention, selvedges 2 and 3 are made in a clean manner so as to have no free filaments liable to injure the tissues when they are put into place. place the strip.

Le tricot 1 selon l'invention, est réalisé de manière à présenter une faible élasticité voire, si possible, une absence d'élasticité permettant une mise en place sans tension. Afin d'atteindre cet objectif, le tricot est réalisé sur la base d'une armure de chaínette tramée, tricotée sur un métier RACHEL présentant au moins deux barres à passettes ou, encore, un métier à crochet.The knit 1 according to the invention is made to have a low elasticity or even, if possible, a lack of elasticity for setting up without tension. In order to achieve this objective, the knitting is carried out on the basis of a halftone chain weave, knitted on a RACHEL loom presenting at least two guide bars or, again, a hook loom.

Dans le cadre d'une réalisation sur un métier à deux barres à passettes, le tricot 1, tel qu'illustré à la fig. 1, est réalisé en adoptant le schéma de liage, tel que représenté de manière schématique à la fig. 2. Ainsi, le fil 10 représente le motif réalisé par la première barre correspondant à une chaínette fermée qui possède un barème de type 1-0. Par ailleurs, le fil 12, représenté en trait mixte, présente le liage réalisé au moyen de la deuxième barre à passettes selon un barème de type 0-0/3-3. In the context of an embodiment on a loom with two bars with pucks, the knit 1 , as illustrated in FIG. 1, is achieved by adopting the binding scheme, as shown schematically in FIG. 2. Thus, the wire 10 represents the pattern made by the first bar corresponding to a closed chain which has a scale of 1-0 type. Furthermore, the wire 12 , shown in phantom, shows the binding made by means of the second guide bar according to a scale of 0-0 / 3-3 type.

De manière connue en soi de l'homme du métier, le barème, tel qu'exprimé précédemment, représente les sauts ou jetés des barres à passettes d'un rang à l'autre, la coordonnée 1 correspondant à une position intermédiaire entre les deux premières colonnes d'aiguilles à gauche.In a manner known per se to those skilled in the art, the scale, as expressed previously, represents the jumps or throws of the guide bars from one rank to another, the coordinate 1 corresponding to an intermediate position between the first two needle columns on the left.

Le tricot obtenu présente alors une structure vue au microscope telle qu'illustrée à la fig. 3. The knit obtained then has a structure seen under a microscope as illustrated in FIG. 3.

La structure présente, entre autres caractéristiques avantageuses, la propriété d'être peu démaillable, de sorte que le chirurgien peut y effectuer plusieurs découpes partielles, sans que cela risque d'entraíner un détricotage complet de l'ensemble du tricot implanté.The structure has, among other advantageous features, the property to be undemaillable, so that the surgeon can make several cuts partial, without this being likely to lead to complete unraveling of the whole of the implanted knit.

De plus, la structure de l'armure de chaínette tramée présente l'avantage d'offrir des pores qui présentent une taille, dans au moins une de leurs trois dimensions, supérieure à 74 µm. Ainsi, selon l'exemple illustré, les pores principaux 15 présentent une forme rectangulaire dont la largeur l15 est supérieure à 74 µm.In addition, the structure of the halftone chain armor has the advantage of offering pores that have a size, in at least one of their three dimensions, greater than 74 microns. Thus, in the example shown, the main pores 15 have a rectangular shape whose width l 15 is greater than 74 .mu.m.

Le tricot selon l'invention sera, de préférence, réalisé de manière à présenter un poids surfacique de l'ordre de 35 g/m2, sachant que ce poids pourra être compris entre 28 g/m2 et 100 g/m2, un tel poids étant favorable à une bonne implantation.The knit according to the invention will preferably be made so as to have a surface weight of the order of 35 g / m 2 , knowing that this weight may be between 28 g / m 2 and 100 g / m 2 , such a weight being favorable to a good implantation.

La fig. 4, sur laquelle les mêmes références 10 et 12 ont été adoptées pour les fils correspondant aux deux barres à passettes, illustre une variante de réalisation avec un motif de chaínette ouverte de barème 1-0/0-1 et motif de liage du type 0-0/3-3. Fig. 4 , in which the same references 10 and 12 have been adopted for the threads corresponding to the two guide bars, illustrates an embodiment variant with an open chain pattern of scale 1-0 / 0-1 and type 0 binding pattern. -0 / 3-3.

Dans une autre variante de réalisation, le tricot sera réalisé de manière à présenter une structure parfaitement indémaillable.In another variant embodiment, the knit will be made in such a way as to to present a structure perfectly indaaillable.

A cet effet, la deuxième barre, prenant en charge le fil 12, sera alors animée d'un mouvement maillant symétrique par rapport à la barre de chaínette et conférera, par exemple, une armure dont le barème sera 1-0 pour la chaínette et 1-0/2-3 pour le fil de liage 12, comme cela est illustré de manière schématique à la fig. 5.For this purpose, the second bar, supporting the wire 12 , will then be animated with a gimbal movement symmetrical with respect to the chain bar and will confer, for example, an armor whose scale will be 1-0 for the chain and 1-0 / 2-3 for the binding yarn 12 , as schematically illustrated in FIG. 5 .

Bien entendu, diverses autres modifications peuvent être apportées à l'invention sans sortir de son cadre.Of course, various other modifications can be made to invention without departing from its scope.

Claims (14)

Tricot chaíne à usage chirurgical en fils biocompatibles, caractérisé en ce qu'il présente une armure de chaínette tramée.Surgical chain knit made of biocompatible yarns, characterized in that it has a halftone warp armor. Tricot chaíne à usage chirurgical selon la revendication 1, caractérisé en ce qu'il présente un motif de chaínette fermée, du type 1-0 et un motif de liage du type 0-0/3-3.Surgical chain knit according to claim 1, characterized in that it has a closed chain pattern of the type 1-0 and a binding pattern of the type 0-0 / 3-3. Tricot chaíne à usage chirurgical selon la revendication 1, caractérisé en ce qu'il présente un motif de chaínette fermée du type 1-0 et un motif de liage du type 1-0/2-3.Surgical line knit according to claim 1, characterized in that it has a closed chain pattern of the type 1-0 and a binding pattern of the type 1-0 / 2-3. Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 3, caractérisé en ce qu'il est obtenu sur un métier à tricoter comprenant deux barres à passettes, une barre assurant le motif de chaínette et une barre assurant le motif de liage.Surgical string knit according to one of claims 1 to 3, characterized in that it is obtained on a knitting machine comprising two guide bars, a bar providing the chain pattern and a bar providing the binding pattern. Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 4, caractérisé en ce qu'il présente des pores (15) dont au moins la taille est dans une dimension au moins supérieure à 74 µm.Surgical string knit according to one of Claims 1 to 4, characterized in that it has pores (15) of which at least the size is in a size at least greater than 74 μm. Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 5, caractérisé en ce qu'il se présente sous la forme d'un ruban à lisières nettes.Surgical string knit according to one of claims 1 to 5, characterized in that it is in the form of a ribbon with sharp edges. Tricot chaíne à usage chirurgical selon la revendication 6, caractérisé en ce qu'il présente une largeur (l) comprise entre 8 mm et 55 mm et, de préférence, entre 8 mm et 15 mm.Surgical string knit according to claim 6, characterized in that it has a width (l) of between 8 mm and 55 mm and preferably of between 8 mm and 15 mm. Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 7, caractérisé en ce qu'il présente un poids surfacique compris entre 28 g/m2 et 100 g/m2 et, de préférence, compris entre 30 g/m2 et 40 g/m2.Surgical chain knit according to one of Claims 1 to 7, characterized in that it has a weight per unit area of between 28 g / m 2 and 100 g / m 2 and, preferably, of 30 g / m 2 and 40 g / m 2 . Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 8, caractérisé en ce qu'il est réalisé en fils de matériau synthétique choisi parmi le polypropylène, le polyester et le polyamide.Knit surgical chain according to one of claims 1 to 8, characterized in that it is made of son of synthetic material selected from polypropylene, polyester and polyamide. Tricot chaíne à usage chirurgical selon la revendication 9, caractérisé en ce qu'il est réalisé en fils mono-filaments.Surgical chain knit according to claim 9, characterized in that it is made of monofilament yarns. Tricot chaíne à usage chirurgical selon la revendication 10, caractérisé en ce que le fil mono-filament présente un diamètre compris entre 0,017 mm et 0,15 mm et, de préférence, entre 0,05 mm et 0,10 mm. A surgical string knit according to claim 10, characterized in that the monofilament yarn has a diameter of between 0.017 mm and 0.15 mm and preferably between 0.05 mm and 0.10 mm. Tricot chaíne à usage chirurgical selon l'une des revendications 1 à 11, caractérisé en ce qu'il a subi un apprêt de thermofixation à une température comprise entre 120 °C et 140 °C et, de préférence, comprise entre 125 °C et 135 °C.Surgical warp knit according to one of claims 1 to 11, characterized in that it has undergone a heat setting at a temperature of between 120 ° C and 140 ° C and preferably between 125 ° C and 135 ° C. Bandelette de renfort pour le traitement de la cystocèle, caractérisée en ce qu'elle comprend une longueur de tricot selon l'une des revendications 1 à 12.Reinforcing tape for the treatment of the cystocele, characterized in that it comprises a length of knit according to one of claims 1 to 12. Utilisation d'une pièce de tricot, selon l'une des revendications 1 à 12, pour la confection d'une prothèse implantable.Use of a knit piece according to one of claims 1 to 12 for making an implantable prosthesis.
EP04356190A 2003-12-05 2004-12-03 Warp knit fabric for surgical application Withdrawn EP1538248A1 (en)

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FR0314288A FR2863277B1 (en) 2003-12-05 2003-12-05 CHAIN KNIT FOR SURGICAL USE
FR0314288 2003-12-05

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FR3006578B1 (en) 2013-06-07 2015-05-29 Sofradim Production PROSTHESIS BASED ON TEXTILE FOR LAPAROSCOPIC PATHWAY
FR3006581B1 (en) 2013-06-07 2016-07-22 Sofradim Production PROSTHESIS BASED ON TEXTILE FOR LAPAROSCOPIC PATHWAY
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EP3000432B1 (en) 2014-09-29 2022-05-04 Sofradim Production Textile-based prosthesis for treatment of inguinal hernia
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FR2863277A1 (en) 2005-06-10

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