Artificial blood vessel and method for producing the same

Abstract

Abstract Translated from Japanese (57)【要約】 （修正有） 【目的】 屈曲及び圧迫に対する耐性に優れ、かつ、縫 合性に優れた管状四弗化エチレン樹脂多孔質体製の人工 血管を提供する。 【構成】 管状四弗化エチレン樹脂多孔質体（ＰＴＦＥ 多孔質チューブ）の外面に、網目状の孔を有する管状弗 素樹脂体の被覆層が設けられている人工血管。管状弗素 樹脂体の円周に沿って配置した切れ込み群〔Ａ〕と、他 の円周に沿って、前記と同じ長さと個数の切れ込みを、 １８０度を前記切れ込みの個数で割った角度だけずらし た位置に配置した切れ込み群〔Ｂ〕とを、長軸方向に沿 って、交互に等間隔で多数配置した構造の管状弗素樹脂 体を、ＰＴＦＥ多孔質チューブの外面に被せて、長軸方 向に引っ張ることにより、切れ込みを開口させて網目状 の孔を形成させ、弗素樹脂の融点以上の温度で加熱固定 する。 (57) [Summary] (Correction) [Objective] To provide an artificial blood vessel made of a tubular tetrafluoroethylene resin porous body, which is excellent in resistance to bending and compression and excellent in sutureability. [Structure] Tubular tetrafluoride ethylene resin porous body (PTFE An artificial blood vessel in which a coating layer of a tubular fluororesin body having mesh holes is provided on the outer surface of a porous tube). A group of cuts [A] arranged along the circumference of the tubular fluororesin body, and along the other circumference, cuts of the same length and number as above. A tubular fluororesin body having a structure in which a large number of cut groups [B], which are arranged at a position shifted by an angle obtained by dividing 180 degrees by the number of the cuts, are arranged at equal intervals along the major axis direction. By covering the outer surface of the porous tube and pulling it in the long axis direction, the notches are opened to form a mesh-like hole, which is heated and fixed at a temperature equal to or higher than the melting point of the fluororesin.

Inventors

• 👤 Shinichi Kanazawa
• 👤 進一 金澤

Bibliographic Details