[Dissolvable supporting in small artery anastomosis: an experimental study].

Intra-lumen supporting, made of biomaterial, non-toxic, tissue-compatible, and dissolvable, was used in anastomosing femoral artery on one side of 51 rabbits, while that on other side was anastomosed by conventional procedure for comparison. Results showed that suturing on the experiment group could be accomplished with better accuracy, less trauma and avoidance of puncturing the opposite wall, and with higher speed, shorter operation time than the contra. Better still, the intra-lumen supporting stabilized the vessel stumps and dilated the segments being handling, so that torsion and spasm were prevented. The intra-lumen supporting was then dissolved and no thrombosis developed in any of the experiment ones but some of the contra. Histological observation revealed that repair of tissue in each layer of the artery wall at the anastomosis site proceeded much quicker in the experiment ones than in the contra. We are impressed, through this survey, that the newly formed endothelial cells cover in the juncture area may arise from the uninjured endothelium nearby, and may also come from monocytes in the circulation.