ABSTRACT
Microvascular manual suture technique is invented by doctor Carrel in 1912, it had become a core technique in microsurgery. This vascular anastomosis technique is effective. However, it also has some disadvantages such as time-consuming and labor- consuming. And as a residual foreign body, suture can also cause inflammation. In recent years, vascular couplers have been widely applied in clinic, this method ensuring the quality of anastomosis with faster speed. The four principles on ideal vascular anastomosis, which put forward by Carrel, is the target of improvement on vascular anastomosis tools. In recent years, Ring-coupling using negative pressure, vascular stents, hook stapling anastomat, fibrin glue, P407 and other new technologies have been reported, this paper will focus on the advantages and disadvantages of these technologies.