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作者将一种新型自胀式血管内义管用于28只实验动物的47条血管,包括髂动脉、股动脉、腹腔动脉,肾动脉、颈动脉和冠状动脉。手术前后不给动物抗凝药物,以观察此种义管的凝血情况,并作修补血管的组织学观察。新义管为一种多根不锈钢丝的弹性编织物,可以小直径经一种水压输送导管送入血管内,脱离导管后自动扩张,固定于血管内壁,起到修补作用。存活3个月以上的10只动物27条实验血管一直保持畅通,无血栓形成及修复义管的移位。8只动物出现血栓,儿乎都位于锥形缩窄的义管边缘。特别是血管急速窄缩的部位。义管置入大血管分支及植入前后义管直径比大于1.5时易发生血栓。选用较短义管和适当的管径以及改进技术避免义管的锥形变形可防止血栓形成。组织学观
The authors applied a novel self-expanding intravascular tube to 47 vessels in 28 experimental animals including the iliac artery, femoral artery, celiac artery, renal artery, carotid artery, and coronary artery. Before and after surgery to animals without anticoagulant drugs to observe the coagulation of such a sense of the tube, and repair blood vessels for histological observation. The novelty tube is a kind of flexible braid of multiple stainless steel wires, which can be sent into the blood vessel through a hydraulic delivery catheter with a small diameter, automatically expands after being detached from the catheter and is fixed on the inner wall of the blood vessel, thereby playing a repair role. Twenty-seven experimental blood vessels of 10 animals surviving more than 3 months remained unblocked, without thrombosis and repaired the displacement of the sense tube. Thromboembolism occurred in 8 animals, and almost all of them were located on the edge of a conical narrowed duct. In particular, rapid vascular constriction of the site. Implantation of large blood vessels into the branches and implants before and after the implanted diameter ratio greater than 1.5 prone to thrombosis. Choose a shorter tube and the appropriate diameter and improved technology to avoid the conical tube deformation can prevent thrombosis. Histology