Bioabsorbable multifilament yarn and methods of manufacture
The present invention relates to a process of forming bioabsorbable, multifilament yarn from Lactide-rich copolymers, including the steps of extruding and spinning a Lactide-rich copolymer to form a spun multifilament yarn, pre-tensioning the spun multifilament yarn to form a pre-tensioned yarn, hea...
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Format: | Patent |
Sprache: | eng |
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Zusammenfassung: | The present invention relates to a process of forming bioabsorbable, multifilament yarn from Lactide-rich copolymers, including the steps of extruding and spinning a Lactide-rich copolymer to form a spun multifilament yarn, pre-tensioning the spun multifilament yarn to form a pre-tensioned yarn, heating the pre-tensioned yarn to form a pre-tensioned, preheated yarn, annealing and drawing the pre-tensioned, preheated yarn for a first time, annealing and drawing the yarn for a second time, cooling the twice-drawn yarn to a lower temperature, and taking-up the cooled multifilament yarn, to yarns prepared by the process and to medical devices prepared from such yarns. |
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