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Abstract

The invention provides a porous scaffold for tissue engineering which allows easy cell engraftment and cell culture and thus enables stable organization and an artificial blood vessel which exhibits high patency rate even if the inner diameter is small. The scaffold for tissue engineering is made of thermoplastic resin which forms a porous three-dimensional network structure having communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 650 .mu.m and an apparent density of from 0.01 to 0.5 g/cm.sup.3. The artificial blood vessel is composed of this scaffold. The invention provides a cuff which allows easy infiltration of cells from living subcutaneous tissues, easy engraftment of cells, and neovascularization of capillary vessels so as to obtain robust bonding with subcutaneous tissues and, as a result, ensures separation of a wounded portion from the outside, thereby blocking exacerbation factors such as bacterial infection on healing and inhibiting progression of downgrowth. That is, the invention provides a cuff with none or little infection trouble such as tunnel infection. The cuff comprises a porous three-dimensional network structure which is made of thermoplastic resin or thermosetting resin and has communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 1000 .mu.m and apparent density of from 0.01 to 0.5 g/cm.sup.3. The invention provides a biological implant covering member which allows easy infiltration of cells from living subcutaneous tissues, easy engraftment of cells, and organization, thereby obtaining robust bonding with native tissues and therefore protecting a living body from adverse effect which may occur due to the insertion of a biological implantation member into the living body. The biological implant covering member comprises a porous three-dimensional network structure which is made of thermoplastic resin or thermosetting resin and has communication property, wherein the porous three-dimensional network structure has an average pore diameter of from 100 to 1000 .mu.m and apparent density of from 0.01 to 0.5 g/cm.sup.3.

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First Claim