| 摘要 |
There is disclosed a method for making an access graft comprising a tube (11) of implantable material adapted to be attached in a blood circulatory system and to provide thereby a site for access for cannulation, the tube having a permanent set, kink-resistant U-bend section, the method comprising: forming a straight tube by a process which yields a set, dryable tube; taking a length of the tube and inserting in it along its length a flexible rod-like support member (12); wrapping the tube containing the support member around a core (13) so as to define a bend in the tube, the tube being wet at this stage; drying the wet tube containing the support member while wrapped around the core whereby permanently to shape the tube into a bent form; removing the dried tube from the core and removing the support member whereby to form an access graft, U-bend section. <IMAGE> |
