FR2596641A1 - Artificial ligament - Google Patents
Artificial ligament Download PDFInfo
- Publication number
- FR2596641A1 FR2596641A1 FR8604882A FR8604882A FR2596641A1 FR 2596641 A1 FR2596641 A1 FR 2596641A1 FR 8604882 A FR8604882 A FR 8604882A FR 8604882 A FR8604882 A FR 8604882A FR 2596641 A1 FR2596641 A1 FR 2596641A1
- Authority
- FR
- France
- Prior art keywords
- ligament
- sheath
- ribbons
- fibers
- ligaments
- 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
Links
- 210000003041 ligament Anatomy 0.000 title claims abstract description 71
- 239000000835 fiber Substances 0.000 claims description 16
- 210000000988 bone and bone Anatomy 0.000 claims description 3
- 239000002654 heat shrinkable material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 239000003292 glue Substances 0.000 claims 1
- 210000000629 knee joint Anatomy 0.000 abstract description 2
- 229920002994 synthetic fiber Polymers 0.000 description 6
- 239000012209 synthetic fiber Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 229920004934 Dacron® Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000005020 polyethylene terephthalate Substances 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 238000009940 knitting Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000002784 sclerotic effect Effects 0.000 description 1
- 210000005222 synovial tissue Anatomy 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 210000001519 tissue Anatomy 0.000 description 1
- 238000009941 weaving Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/02—Prostheses implantable into the body
- A61F2/08—Muscles; Tendons; Ligaments
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04B—KNITTING
- D04B1/00—Weft knitting processes for the production of fabrics or articles not dependent on the use of particular machines; Fabrics or articles defined by such processes
- D04B1/14—Other fabrics or articles characterised primarily by the use of particular thread materials
- D04B1/16—Other fabrics or articles characterised primarily by the use of particular thread materials synthetic threads
-
- 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
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Transplantation (AREA)
- Biomedical Technology (AREA)
- Rehabilitation Therapy (AREA)
- Rheumatology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Textile Engineering (AREA)
- Orthopedic Medicine & Surgery (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
Description
La présente invention concerne un ligament artificiel pour prothèse d'articulation constituée de plusieurs brins entourés d'une gaine constituée d'un assemblage de fibres.The present invention relates to an artificial ligament for a joint prosthesis consisting of several strands surrounded by a sheath consisting of an assembly of fibers.
Un ligament de ce type est connu du brevet français N 2.213.761. Ce ligament connu, destine à la confection de prothèses pour la restauration des articulations. notamment de l'articulation du genou, est constitué d'une gaine en étoffe de polymère synthétique abritant plusieurs brins, en particulier quatre brins constitués chacun d'une fibre en polyamide d'un diamètre de 1 à 5 mm. Ce ligament connu donne sans doute déjà de bons résultats mais ses caractéristiques sont encore relativement très différentes de celles d'un ligament naturel. En particulier ce ligement connu ne présente pas d'élasticité comparable å celle d'un ligament naturel. D'autre part, il est constitué d'un seul faisceau, alors que les ligaments anatomiques sont constitués de plusieurs faisceaux.Les ligaments du genou sont notamment constitués de trois faisceaux. Ce ligament artificiel connu doit donc présenter un diamètre relativement grand pour avoir la même résistance à la traction qu'un ligament naturel. Ce grand diamètre a pour conséquence un manque de souplesse.A ligament of this type is known from French patent N 2,213,761. This known ligament, intended for making prostheses for the restoration of joints. in particular of the knee joint, consists of a sheath made of synthetic polymer fabric sheltering several strands, in particular four strands each consisting of a polyamide fiber with a diameter of 1 to 5 mm. This known ligament undoubtedly already gives good results but its characteristics are still relatively very different from those of a natural ligament. In particular, this known ligament has no elasticity comparable to that of a natural ligament. On the other hand, it is made up of a single bundle, while the anatomical ligaments are made up of several bundles. The knee ligaments are made up of three bundles. This known artificial ligament must therefore have a relatively large diameter to have the same tensile strength as a natural ligament. This large diameter results in a lack of flexibility.
La présente invention a pour but la réalisation d'un ligament artificiel dont les caractéristiques se rapprochent davantage de celles d'un ligament naturel.The object of the present invention is to produce an artificial ligament whose characteristics are more similar to those of a natural ligament.
A cet effet le ligament artificiel selon l'invention est caractérisé en ce qu'il est double, les deux ligaments individuels qui le constituent étant légèrement vrillés l'un autour de l'autre et attachés l'un à 1 autre par leurs extrémités, et en ce que les brins de chacun de ces ligaments individuels sont constitués par des rubans également formés d'un assemblage de fibres.To this end, the artificial ligament according to the invention is characterized in that it is double, the two individual ligaments which constitute it being slightly twisted around one another and attached to one another by their ends, and in that the strands of each of these individual ligaments are constituted by ribbons also formed from an assembly of fibers.
les assemblages des fibres de la gaine et des rubans étant tels que le ligament présente une élasticité autorisant un allongement élastique de l'ordre de 10 à 20 X,
L'assemblage des fibres constituant la gaine et les rubans peut être fait par tissage. tressage ou tricotage, de manière à présenter l'élasticité recherchée. Il est possible d'obtenir une élasticité correspondant en particulier à un allongement élastique d'environ 18 Z.the assemblies of the fibers of the sheath and of the ribbons being such that the ligament has an elasticity allowing an elastic elongation of the order of 10 to 20 X,
The fibers constituting the sheath and the ribbons can be assembled by weaving. braiding or knitting, so as to have the desired elasticity. It is possible to obtain an elasticity corresponding in particular to an elastic elongation of approximately 18 Z.
trés proche de l'élasticité d'un ligament naturel.very close to the elasticity of a natural ligament.
Le ligament étant double, il se rapproche d'un ligament naturel constitué de plusieurs faisceaux.The ligament being double, it approaches a natural ligament made up of several bundles.
En raison du léger vrillage des deux ligaments individuels l'un autour de l'autre, les deux ligaments individuels travaillent altérnativement, augmentant ainsi la durée de vie et l'élasticité du ligament.Due to the slight twisting of the two individual ligaments around each other, the two individual ligaments work alternately, thereby increasing the lifespan and elasticity of the ligament.
La gaine et les rubans sont de préférence réalisés dans le même matériau synthétique biocompatible. Les extrémités communes des ligaments individuels sont en outre de préférence entourées d'une seconde gaine commune en matière thermorétractable constituant un introducteur pour faciliter l'introduction des ligaments dans un tunnel osseux lorsqu'il est .nécessaire de procéder à une fixation transosseuse du ligament.The sheath and the ribbons are preferably made from the same biocompatible synthetic material. The common ends of the individual ligaments are also preferably surrounded by a second common sheath of heat-shrinkable material constituting an introducer to facilitate the introduction of the ligaments into a bone tunnel when it is necessary to carry out a transosseous fixation of the ligament.
Une forme d'exécution de l'invention sera maintenant décrite en référence au dessin annexé dans lequel la figure 1 représente un ligament double et la figure 2 une vue de détail d'une partie sectionnée de l'un des ligaments composant le ligament double.An embodiment of the invention will now be described with reference to the accompanying drawing in which FIG. 1 represents a double ligament and FIG. 2 a detailed view of a sectioned part of one of the ligaments making up the double ligament.
Le ligament double artificiel représenté à la figure 1 est constitué de deux ligaments 1 et 2 se présentant sous la forme de cordons souples, compressibles, de section approximativement circulaire, dont les extrémités sont fixées ensembles sur une certaine longueur par deux gaines 3 et 4 en matière thermorètractable qui ont pour effet de comprimer les deux cordons 1 et 2, de telle sorte que les gaines 3 et 4 présentent, sur la plus grande partie de leur longueur, un diamètre extérieur qui n'est pas supérieur au diamètre d'un seul cordon non comprimé. Les cordons 1 et 2 sont légèrement vrillés l'un autour de l'autre d'un angle d'environ 180 . de telle sorte qu'en l'abscence de toute sollicitation le ligament double se présente comme représenté à la figure 1.Les gaines 3 et 4 sont destinées å servir d'introducteurs, c'est-à-dire à permettre d'introduire le ligament double à travers le canal condylien ou à travers un tunnel pour une fixation transosseuse du ligament. Les gaines 3 et 4 sont enlevées après la mise en place du ligament.The artificial double ligament represented in FIG. 1 consists of two ligaments 1 and 2 in the form of flexible, compressible cords, of approximately circular section, the ends of which are fixed together over a certain length by two sheaths 3 and 4 in heat-shrinkable material which has the effect of compressing the two cords 1 and 2, so that the sheaths 3 and 4 have, over most of their length, an outside diameter which is not greater than the diameter of a single uncompressed cord. Cords 1 and 2 are slightly twisted around each other at an angle of about 180. so that in the absence of any stress the double ligament appears as shown in Figure 1. The sheaths 3 and 4 are intended to serve as introducers, that is to say to allow to introduce the double ligament through the condylar canal or through a tunnel for transosseous fixation of the ligament. The sheaths 3 and 4 are removed after the ligament has been placed.
Chacun des cordons 1 et 2 est constitué de six rubans tricotés 5, 6, 7 ,8 , 9 et 10 en fibres synthétiques, d'une largeur de 5 mm, contenus dans une gaine tubulaire 11 tissée en fibres synthétiques biocompatibles.Each of the cords 1 and 2 consists of six knitted ribbons 5, 6, 7, 8, 9 and 10 made of synthetic fibers, with a width of 5 mm, contained in a tubular sheath 11 woven from biocompatible synthetic fibers.
Les rubans 5 à 10 et la gaine 11 sont de préférence réalisés avec le même matériau, par exemple en DACRON (Marque déposée de DUPONT DE NEMOURS). Selon une forme d'exécution les rubans 5 à 10 sont constitués de 25 fil. de 300 deniers et de 9 duites doubles au centi- mètre ce 50 deniers, tandis que la gaine tubulaire 11 est constituee de 50 fils de 300 deniers et de 30 duites c.ou0.Les au centimètre de 150 deniers. Le liga- ment double présente une reslstance à la rupture d environ 1500 Newton.Dans une autre qualité, les rubans 5 à 10 sont constitués de 40 fils de 300 deniers et de 9 duites doubles au centimètre de 150 deniers, tandis que l enveloppe tubuia ire est constituée de 50 fils de 300 deniers et de 30 duites doubles au centimètre de 150 deniers. Le ligament double ainsi réalisé présente une resistance à la rupture d environ 2400 Newton. La fibre synthétique est de préférence soumise à un traitement de neutralisation de 1' ensi- mage, ce qui a pour effet d'améliorer ses caractéristiques pour l'application présente. Ces ligaments doubles présentent une élasticité autorisant un allongement d'environ 18 'g. The ribbons 5 to 10 and the sheath 11 are preferably made from the same material, for example DACRON (registered trademark of DUPONT DE NEMOURS). According to one embodiment, the tapes 5 to 10 consist of 25 threads. of 300 denier and 9 double picks per centimeter this 50 denier, while the tubular sheath 11 is made up of 50 threads of 300 denier and 30 picks c.or0.Les to the centimeter of 150 denier. The double ligament has a breaking strength of around 1500 Newton. In another quality, the tapes 5 to 10 are made up of 40 threads of 300 denier and 9 double picks per centimeter of 150 denier, while the tubuia envelope ire consists of 50 threads of 300 denier and 30 double picks per centimeter of 150 denier. The double ligament thus produced has a tensile strength of approximately 2400 Newton. The synthetic fiber is preferably subjected to a seed neutralization treatment, which has the effect of improving its characteristics for the present application. These double ligaments have an elasticity allowing an elongation of approximately 18 'g.
Le ligament double selon l'invention est fixé par exemple au moyen de plaques d'ancrage comme décrit dans le brevet FR 2 213 761 ou au moyen d'agrafes. La fixation peut être transosseuse ou latérale. con vrillage initial est tel que les deux ligaments travaillent alternativement, ce qui a pour effet d augmenter la durée de vie et l'élasticité du ligament. La forme ronde des cordons 1 et 2, proche de la forme anatomique. The double ligament according to the invention is fixed for example by means of anchoring plates as described in patent FR 2 213 761 or by means of staples. The attachment can be cross-stitched or lateral. initial twist is such that the two ligaments work alternately, which has the effect of increasing the life and elasticity of the ligament. The round shape of cords 1 and 2, close to the anatomical shape.
facilite la reprise osseuse et la formation de tissu synovial sur le ligament, évitant la formation de tissu sclérotique qui aurait pour effet de durcir le ligament et d entrainer sa cassure. Contrairement au ligament connu, le ligament selon l'invention n'a pas seulement une fonction de support mais remplace effectivement le ligament naturel. La structure des rubans reproduit les fibres internes anatomiques, dissociées mutuellement, des ligaments naturels.facilitates bone recovery and the formation of synovial tissue on the ligament, avoiding the formation of sclerotic tissue which would harden the ligament and cause it to break. Unlike the known ligament, the ligament according to the invention not only has a support function but effectively replaces the natural ligament. The structure of the ribbons reproduces the internal anatomical fibers, mutually dissociated, from the natural ligaments.
En lieu et place de la fibre DACRON d'autres fibres synthétiques, tel que polyester ou autres, ou non synthétiques pourraient être utilisées pour réaliser le ligament selon l'invention. Il sera par exemple possible d'utiliser des fibres cellulosique naturelles, éventuellement traitées pour être biocompatibles. Les rubans et la gaine ne doivent pas nécessairement être réalisés avec les mêmes matériaux. Les fibres peuvent être tissées, tressées, tricotées ou assemblées par toute autre méthode. Au lieu d'être maintenues ensemble par des gaines thermorétractables, les extrémités des cordons 1 et 2 pourraient être tenus ensemble par une colle souple. In place of the DACRON fiber, other synthetic fibers, such as polyester or others, or non-synthetic fibers could be used to make the ligament according to the invention. It will for example be possible to use natural cellulosic fibers, possibly treated to be biocompatible. The tapes and the sheath do not necessarily have to be made with the same materials. The fibers can be woven, braided, knitted or assembled by any other method. Instead of being held together by heat-shrink tubing, the ends of the beads 1 and 2 could be held together by a flexible adhesive.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8604882A FR2596641B1 (en) | 1986-04-04 | 1986-04-04 | ARTIFICIAL LIGAMENT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR8604882A FR2596641B1 (en) | 1986-04-04 | 1986-04-04 | ARTIFICIAL LIGAMENT |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2596641A1 true FR2596641A1 (en) | 1987-10-09 |
| FR2596641B1 FR2596641B1 (en) | 1988-06-24 |
Family
ID=9333931
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR8604882A Expired FR2596641B1 (en) | 1986-04-04 | 1986-04-04 | ARTIFICIAL LIGAMENT |
Country Status (1)
| Country | Link |
|---|---|
| FR (1) | FR2596641B1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2624724A1 (en) * | 1987-12-22 | 1989-06-23 | Rhenter Jean Luc | SYNTHETIC LIGAMENT FOR KNEE |
| US5092866A (en) * | 1989-02-03 | 1992-03-03 | Breard Francis H | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| US5263984A (en) * | 1987-07-20 | 1993-11-23 | Regen Biologics, Inc. | Prosthetic ligaments |
| FR2697151A1 (en) * | 1992-10-28 | 1994-04-29 | Laboureau Jacques Philippe | Artificial ligament and its method of making. |
| FR2700111A1 (en) * | 1992-03-23 | 1994-07-08 | Cuisset Bertrand | Artificial ligament for prosthetic use |
| WO1996001600A1 (en) * | 1994-07-07 | 1996-01-25 | Bertrand Cuisset | Ligament prosthesis |
| WO1998037836A1 (en) * | 1997-02-28 | 1998-09-03 | W.L. Gore & Associates, Inc. | Implantable tissue augmentation device |
| USRE36221E (en) * | 1989-02-03 | 1999-06-01 | Breard; Francis Henri | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| FR2904527A1 (en) * | 2006-08-03 | 2008-02-08 | Tettra Trading Ltd | Plastic surgical kit for repairing anterior cruciate ligament of knee, has strips maintained in femoral and tibial bone tunnels, where strips have specific mechanical traction resistance, and pull wire drawing strips across tunnels |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1602834A (en) * | 1978-03-14 | 1981-11-18 | Welsh Nat School Med | Replacements for ligaments and tendons |
| EP0041111A2 (en) * | 1980-06-03 | 1981-12-09 | GebràDer Sulzer Aktiengesellschaft | Artificial tendon and/or ligament |
| EP0145492A2 (en) * | 1983-12-15 | 1985-06-19 | A.W.Showell (Surgicraft) Limited | Replacements for ligaments and tendons |
| GB2159846A (en) * | 1984-06-05 | 1985-12-11 | Showell A W | Surgical element |
-
1986
- 1986-04-04 FR FR8604882A patent/FR2596641B1/en not_active Expired
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1602834A (en) * | 1978-03-14 | 1981-11-18 | Welsh Nat School Med | Replacements for ligaments and tendons |
| EP0041111A2 (en) * | 1980-06-03 | 1981-12-09 | GebràDer Sulzer Aktiengesellschaft | Artificial tendon and/or ligament |
| EP0145492A2 (en) * | 1983-12-15 | 1985-06-19 | A.W.Showell (Surgicraft) Limited | Replacements for ligaments and tendons |
| GB2159846A (en) * | 1984-06-05 | 1985-12-11 | Showell A W | Surgical element |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5263984A (en) * | 1987-07-20 | 1993-11-23 | Regen Biologics, Inc. | Prosthetic ligaments |
| FR2624724A1 (en) * | 1987-12-22 | 1989-06-23 | Rhenter Jean Luc | SYNTHETIC LIGAMENT FOR KNEE |
| WO1989005614A1 (en) * | 1987-12-22 | 1989-06-29 | Rhenter Jean Luc | Synthetic ligament for knees |
| US5078745A (en) * | 1987-12-22 | 1992-01-07 | Rhenter Jean Luc | Synthetic ligament for the knee |
| US5092866A (en) * | 1989-02-03 | 1992-03-03 | Breard Francis H | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| USRE36221E (en) * | 1989-02-03 | 1999-06-01 | Breard; Francis Henri | Flexible inter-vertebral stabilizer as well as process and apparatus for determining or verifying its tension before installation on the spinal column |
| FR2700111A1 (en) * | 1992-03-23 | 1994-07-08 | Cuisset Bertrand | Artificial ligament for prosthetic use |
| FR2697151A1 (en) * | 1992-10-28 | 1994-04-29 | Laboureau Jacques Philippe | Artificial ligament and its method of making. |
| WO1994009720A1 (en) * | 1992-10-28 | 1994-05-11 | Laboureau Jacques Philippe | Artificial ligament and process for its manufacture |
| WO1996001600A1 (en) * | 1994-07-07 | 1996-01-25 | Bertrand Cuisset | Ligament prosthesis |
| WO1998037836A1 (en) * | 1997-02-28 | 1998-09-03 | W.L. Gore & Associates, Inc. | Implantable tissue augmentation device |
| FR2904527A1 (en) * | 2006-08-03 | 2008-02-08 | Tettra Trading Ltd | Plastic surgical kit for repairing anterior cruciate ligament of knee, has strips maintained in femoral and tibial bone tunnels, where strips have specific mechanical traction resistance, and pull wire drawing strips across tunnels |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2596641B1 (en) | 1988-06-24 |
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| ST | Notification of lapse |