| 摘要 |
An artificial vessel, wherein the vessel wall is made of an elastomer having a porous structure with pores at any part of the vessel wall from the inner surface to the outer surface and consists of at least 2 concentric layers, each layer having a substantially uniform porosity percentage, the inmost layer having a thickness of from 30 to 500 mu m and a porosity percentage of from 95 to 80% and other layers having a lower porosity percentage than that of the inmost layer, and the porosity of the whole vessel wall is from 90 to 75%. The artificial vessel may also be reinforced with tubular material made of fiber or with heat-set tubular material made of fiber. The artificial vessel of the present invention has a porosity, a compliance approximate to that of a vital vessel, and a contact surface with blood having an excellent blood compatibility. |
