Surgical soft tissue mesh

Details Surgical soft tissue mesh Surgical soft tissue mesh

A - Human Necessities

61

L

A61L 31/04 (2006.01)

Patent

CA 2509141

The invention relates to a soft and flexible surgical soft tissue mesh comprising polyethylene yarns, wherein the polyethylene yarns have a tensile strength of more than 1.0 Gpa and consist of a polyethylene with a relative viscosity of more than 5 dl/g. A further aspect of the invention is a method of producing a soft and flexible surgical soft tissue mesh comprising polyethylene yarns, wherein yarns are applied that comprise filaments made by: a) spinning at least one filament from a solution of polyethylene with a relative viscosity of more than 5 dl/g in a solvent; b) cooling the filament obtained to form a gel filament c) removing at least partly the solvent from the gel filament; and d) drawing the filament in at least one drawing step before, during or after removing solvent.

L'invention concerne un filet chirurgical mou et souple pour tissu mou comprenant des fils de polyéthylène, ces fils de polyéthylène présentant une résistance à la traction supérieure à 1,0 Gpa et se composant d'un polyéthylène possédant une viscosité relative supérieure à 5 dl/g. Un autre aspect de l'invention concerne un procédé de production d'un filet chirurgical mou et souple pour tissu mou comprenant des fils de polyéthylène, les fils utilisés comportant des filaments fabriqués au moyen d'une technique consistant (a) à filer au moins un filament à partir d'une solution de polyéthylène présentant une viscosité relative supérieure à 5 dl/g dans un solvant, (b) à refroidir le filament obtenu de sorte à former un filament gélatineux, (c) à extraire une partie au moins du solvant à partir du filament gélatineux, et (d) à étirer le filament en au moins une étape d'étirage avant, pendant ou après l'extraction du solvant.

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