Methods of manufacture of radially-enlargeable ptfe tape-reinforced vascular grafts

(57) It is the method of raising the radiate characteristic of augmentative and others of the piece of a vascular transplant of the shape of a tube by which tape strengthening was carried out which consists of sintered fluoropolymers, such as PTFE which carried out summary extension and was sintered. Generally, this method includes the process shrunk radiately, after sintering the strengthening tape layer of the piece of a transplant, or the whole piece of the transplant by which tape strengthening was carried out. Increase of the piece of a transplant is mostly attained radiately from 5% behind, without tearing the strengthening tape layer of the piece of a transplant, or damaging by such radiate contraction of the whole piece of a strengthening tape layer or a transplant. Radiately the present invention, the piece of a transplant which can increase is combined with a stent various type or an adherence system, and the piece equipment of an intravascular transplant possible insertion or transplantable may be formed through a 管腔 wall of it in 管腔 of a host's blood vessel. Or the strength property and the suture maintenance characteristic which the piece of a transplant which can increase might be transplanted with the conventional piece transplant technology of surgical implantation, without causing any radiate increases at the time of a transplant, and the present invention contracted radiately by it and whose piece of a transplant by which tape strengthening was carried out improved may be employed efficiently radiately the present invention.