申请人:KONTRON INSTRUMENTS HOLDING N.V.
公开号:EP0533262A1
公开(公告)日:1993-03-24
Porous, distensible, gel-like membranes which in tubular form are suitable as implants, e.g., vascular prostheses and a process for the preparation thereof is described. The membranes are formed by a spraying, phase-inversion technique which employs thermodynamically unstable polymer solutions and is accomplished by separately spraying the unstable solution and a nonsolvent onto a rotating surface. Prostheses from the highly porous tubular membranes have shown a high degree of patency and completeness of the healing process and are useful for direct implantation in the body or for extracorporeal vascular accesses.
多孔、可膨胀、凝胶状的管状膜适用于植入物,如血管假体,本文介绍了制备这种膜的工艺。这种膜是通过喷涂、相位反转技术形成的,该技术采用热力学不稳定的聚合物溶液,通过将不稳定溶液和非溶剂分别喷涂到旋转表面来实现。由高多孔管状膜制成的假体显示出高度的通畅性和愈合过程的完整性,可直接植入人体或用于体外血管通路。