| 摘要 |
PURPOSE:To maintain the inner vagina retaining force and airtightness of a suture material, and ensure the adhesion thereof as an integral part of viable tissue even after transplantation into a body by making the suture material of the union or knit cloth of an in vivo absorbable polymeric yarn and an in vivo non--absorbable polymeric yarn. CONSTITUTION:A tubular body is an artificial blood vessel formed with a suture material for medical use and has an annular rib 21 formed with the spiral winding of the union or knit cloth 22 of an in vivo absorbable polymeric yarn and in vivo non-absorbable polymeric yarn. The external surface of the tubular body concerned may be covered with a proteinIC coat such as collagen and gelatin. Also, the internal surface may be coated with an anti-thrombus material. When the artificial blood vessel so made is buried in a body, the in vivo absorbable polymeric system as one of the components of the union or knit cloth constituting the tubular body is absorbed into the living body, due to the break of a main chain for the polymer and decomposition with the elapse of time. Furthermore, a granulation tissue enters a gap in the in vivo non-absorbable polymeric yarn. As a result, the artificial blood vessel adheres and is fixed to the viable tissue. |
