[Experimental-morphological study of the roentgeno-endovascular prosthesis]

The authors presented the results of experimental studies on 36 dogs: 66 endovascular spiral wire prostheses made of a metal alloy with a shape "memory" effect were implanted in the aorta and major arteries via an angiographic catheter. Long-term results were followed-up over a period of 14 mos. and demonstrated a good and prolonged permeability of the nitinol prostheses. Morphological investigations showed that the endovascular prosthesis was separated in a ring-like fashion by a thin layer of connective tissue and from within it was lined with a layer of epithelial cells.