Biosyn™ synthetic absorbable sutures are prepared from Gylcomer™ 631, a synthetic polyester composed of glycolide, dioxanone, and trimethylene carbonate. These sutures are colored violet to increase visibility and are also available undyed. The advanced extrusion process of the molecule of Gylcomer™ 631 gives the suture: Excellent initial strength, Excellent in-vivo strength over the critical wound healing period, Excellent knot security, Minimal memory for handling ease. Biosyn™ sutures are indicated for use in general soft tissue approximation and/or ligation, but not for use in cardiovascular or neurological surgery.