摘要
Currently,polypropylene( PP) synthetic mesh is a kind of common material used for pelvic floor's repairing and reconstruction.The repairing mesh is generally made with different hole shape and size.Porosity is one of the most important indicators of PP mesh.Two different-structure PP meshes are selected through adopting corresponding target density in the heat setting process for meshes owning different porosity.Then performance and structure of two kinds meshes with different porosity are tested.The results showed that: the increase of porosity leaded to the decreases of meshes' thickness,tensile strength and bursting strength.Meshes' bending stiffness was reduced and they became softer,but there was no significant change in suture pulling-out force, which maybe associated with the large aperture of PP meshes.
Currently,polypropylene( PP) synthetic mesh is a kind of common material used for pelvic floor's repairing and reconstruction.The repairing mesh is generally made with different hole shape and size.Porosity is one of the most important indicators of PP mesh.Two different-structure PP meshes are selected through adopting corresponding target density in the heat setting process for meshes owning different porosity.Then performance and structure of two kinds meshes with different porosity are tested.The results showed that: the increase of porosity leaded to the decreases of meshes' thickness,tensile strength and bursting strength.Meshes' bending stiffness was reduced and they became softer,but there was no significant change in suture pulling-out force, which maybe associated with the large aperture of PP meshes.
基金
National Key Technology R&D Program,China(No.2012BAI17B05)
