Process of making bioabsorbable filaments

Details Process of making bioabsorbable filaments Process of making bioabsorbable filaments

A - Human Necessities

61

L

A61L 17/12 (2006.01) A61L 17/00 (2006.01)

Patent

CA 2500854

Methods for making a bioabsorbable copolymer filaments (16) are provided herein. The methods include drying the polymer pellets to be extruded, melt extrusion of copolymer components, stretching the filaments in one or more draw steps and permitting the drawn elements (16) to relax. The copolymer preferably contains units derived from glycolide or glycolic acid and units derived from an alkylene carbonate, such as, for example, trimethylene carbonate.

L'invention concerne des procédés de fabrication de filaments copolymères bioabsorbables. Ces procédés consistent à sécher les granules de polymère devant être extrudées, à extruder à l'état fondu des composants copolymères, à étirer les filaments dans une ou plusieurs étapes d'étirage et à détendre les filaments étirés. Le copolymère contient de préférence des unités dérivées de glycolide ou d'acide glycolique et des unités dérivées d'un carbonate d'alkylène, par exemple d'un carbonate de triméthylène.

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