Monofilament suture and preparation method thereof

摘要

The present invention relates to a monofilament suture and a preparation method thereof, more specifically, to a novel monofilament suture wherein two polymers having identical inherent properties are spun to have a cross-sectional structure of conjugated filaments, and said cross-section has interfaces between the spun polymers. The interfaces form a discontinuous cross-section along the radial direction and are distributed continuously along the fiber axis direction, thereby offering improved knot security and applicability to a variety of medical materials, and a preparation method thereof.

主权项

1. A method for improving knot security of a monofilament suture, comprising separately melting a first polymer and a second polymer having identical chemical composition and identical inherent properties selected from melting point, density, and modulus of elasticity and spinning them into a monofilament having a cross-sectional structure of conjugated filaments, and the first polymer and the second polymer are different in melt viscosity,
wherein both the first and second polymers are bioabsorbable or non-bioabsorbable, wherein the cross-section has a sea/islands type structure, and wherein the difference of the melt viscosity of the first polymer and the second polymer is at least 10%.