(57)< Abstract > The ePTFE based conveying transplantation piece which it improves tries to distribute biological activity medicine such as medical medicine to inside the blood style. In the tube of air the aforementioned medicine is filled from source such as medical medicine conveying pump mechanism. As the helical hollow tube, is wound around helical around the outer part wall of the porous ePTFE transplantation piece or, or, tries to contact with other methods, it glues on the said surface. The aforementioned medicine by the fact that, the said medicine is filled through the porous space of the transplantation one wall, is conveyed to the tube cavity of the aforementioned transplantation piece. Therefore, as for the biological activity medicine, being conveyed from source by the hollow tube to the outer part surface of the transplantation piece of ePTFE, spreading to inside the transplantation piece in the said surface, it produces effect on biological processing alongside both surfaces inside and outside the transplantation piece. This invention after transplanting the transplantation piece, makes the renewal or exchange of the biological activity medicine or the medical medicine possible. Furthermore, as for this invention, as the usual blood vessel transplantation piece it is possible to transplant with the same method.改良したePTFEベースの搬送移植片は、医療薬等の生物活性薬を血液流内へ分与するようにされる。中空のチューブに医療薬搬送ポンプ機構等の源から前記薬が注入される。螺旋状の中空チューブは、多孔性ePTFE移植片の外側壁の周りに螺旋状に巻きつけられるか、または、その他の方法で接触するようにされると共に、該表面に接着される。前記薬は、該薬を移植片壁の多孔性空間を介して注入することで前記移植片の管腔へ搬送される。従って、生物活性薬は、源からePTFEの移植片の外側表面へ中空チューブにより搬送されて、該表面において移植片内へ拡散して移植片の内側及び外側の両表面に沿って生物学的処理に影響を与える。本発明は、移植片を移植した後での生物活性薬または医療薬の更新または交換を可能にする。更に、本発明は、通常の血管移植片と同じ方法で移植することができる。
