Patent ID: 7621884
Filing Date: 2009-11-24
Classification: A61M,Y10T

Abstract:
1. A blood circulation circuit comprising flexible components being made from a chlorine-free polymer material and including flexible tubes being made from a chlorine-free polymer material, each of said flexible tubes presenting at least one inner layer and one radially outer layer, the at least one inner layer being made from a combination of at least one polyolefin and at least one elastomer, the at least one radially outer layer being made from thermoplastic polyurethane, each of said flexible tubes presenting at least a corresponding end portion having said one inner and said one radially outer layers, said blood circulation circuit further comprising at least one rigid component being made from a chlorine-free polymer material and comprising a casing being made from a chlorine-free polymer material and second portions of said casing being made from a chlorine-free polymer material, the second portions of said at least one rigid component presenting one inner surface and one radially outer surface and being made from a material selected from the group consisting of PETG, MBS and SEBS-based compound, said PETG, MBS and SEBS-based compound being made from a chlorine-free polymer material and having a corresponding solubility parameter lying within a range of 9.9±1.5 (cal/cm the radially outer layer of thermoplastic polyurethane of the end portions of said flexible tubes having a solubility parameter lying within a range of 9.9±1.5 (cal/cm