Joffre F, Rousseau H, Chemali R
Service de Radiologie, CHU Rangueil, Toulouse.
J Mal Vasc. 1991;16(3):226-33; discussion 233.
Vascular endoprosthesis are aimed at optimizing the results of angioplasty. They are metallic cylinders, most often meshed, laid against the wall of the vessel and progressively incorporated into the intima by endothelial coverage. Experimental studies show that this incorporation occurs within a few weeks. The prosthesis are either self-expanding or mounted on a dilatation balloon. Their aim is to restore a good-quality caliber by smoothing the parietal irregularities that were frequently encountered after dilatation. They are a true parietal prop, inserted into the arterial lumen through a percutaneous approach. The middle-term results of iliac and femoropopliteal implants are very encouraging, and they suggest that this technique may be a very useful complement to transluminal angioplasty in cases of poor results or recurrence. The insertion of an endoprosthesis also allows to extend the indications of transluminal angioplasty to cases that had been regarded as hardly favorable so far: long, irregular stenosis, iliac obliteration, etc.
血管内假体旨在优化血管成形术的效果。它们是金属圆柱体，大多为网状，贴靠血管壁放置，并通过内皮覆盖逐渐融入内膜。实验研究表明，这种融入在几周内即可发生。假体要么是自膨胀式的，要么安装在扩张球囊上。其目的是通过平整扩张后经常出现的血管壁不规则处来恢复良好的管径。它们是真正的血管壁支撑物，通过经皮途径插入动脉腔。髂动脉和股腘动脉植入的中期结果非常令人鼓舞，这表明在效果不佳或复发的情况下，该技术可能是腔内血管成形术非常有用的补充。植入内假体还可将腔内血管成形术的适应证扩展到迄今被认为不太有利的病例：长段不规则狭窄、髂动脉闭塞等。
