RADIOPAQUE SUTURE

摘要

A polyamide suture includes an elongate core formed of multiple twisted and heat set filaments formed of a first polyamide material and a sheath formed of a second polyamide material surrounding the core along its length, the second polyamide material having dispersed therein non-absorbable radiopaque nanoparticles comprising 15-25% by weight of the second polyamide material. The melting point of the first polyamide material is at least 30° C. greater than the melting point of the second polyamide material. The core may also include or be formed of previously extruded bundles of first polyamide filaments overcoated with a second polyamide sheath. The suture is made by coextruding the core and a molten organic material formed of the second polyamide material and dispersed radiopaque nanoparticles. Desirably, the first polyamide material is Polyamide 66 and the second polyamide material is Polyamide 6.

主权项

1. A polyamide suture comprising:
an elongate core formed of multiple twisted and heat set filaments formed of a first polyamide material; and a sheath surrounding said core along its length, said sheath comprising a second polyamide material, said second polyamide material having dispersed therein non-absorbable radiopaque nanoparticles, said radiopaque nanoparticles comprising 15-25% by weight of said second polyamide material, the melting point of said first polyamide material being at least 30° C. greater than the melting point of said second polyamide material.