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US 5,494,620 AGranted
Method of manufacturing a monofilament suture
AssigneeUnited States Surgical Corporation
InventorsCheng-Kung Liu, Richard P. Stevenson
Life of this patent
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Abstract
A process and apparatus are provided for manufacturing monofilaments possessing improved physical characteristics such as knot-pull and straight-pull strength.
Claims6
A monofilament manufacturing process comprising the steps of melt extruding and quenching a polymer to provide a solidified monofilament, stretching the solidified monofilament to achieve molecular orientation, cooling the stretched monofilament to maintain the dimensional stability of the stretched monofilament and optionally annealing the monofilament;
- wherein the stretched monofilament is cooled under temperatures ranging from about -15.degree. to about -10.degree. C.
Dependencies are inferred from the claim text.