| 摘要 |
An artificial vessel prepared from a solution of a thermoplastic elastomer in a good solvent, comprising a skin layer on at least the inner surface of the vessel wall, and an interior region having a spongy structure characterized by cells surrounded by partition walls, wherein the inner surface, outer surface, and partition walls contain: (a) small pores of less than 1 mu m in diameter formed by replacement of the good solvent in the solution of the elastomer with a coagulating liquid for the elastomer; (b) large pores of 1 to 50 mu m in diameter which are in continuous communication with each other and communicate the inner surface of the vessel wall to the outer surface of the vessel wall, the large pores being formed by elution of pore-forming particles contained in the solution of thermoplastic elastomer, and wherein the porosity of the artificial vessel is 75 to 87.5% by volume, and the compliance of the artificial vessel is 0.1 to 0.8. |
