Vascular anastomosis device

The vascular anastomosis device comprises an anastomat male part, an anastomat female part and a clamping structure, the anastomat male part is in a hollow circular ring shape, the anastomat female part is in an annular opening shape, and the clamping structure is arranged between the two opening side walls of the anastomat female part and can achieve buckling at the opening position of the anastomat female part. The anastomat female part is arranged outside the anastomat male part in a sleeving mode and fixedly connected with the anastomat male part through the clamping structure. According to the novel blood vessel anastomosis device, the anastomat is formed by matching a combined type closed type circular ring and an open type circular ring structure, anastomosis of the different diameters of blood vessels can be achieved, the blood vessel anastomosis method is simple, rapid and effective, the male piece and the female piece are designed in a one-way meshing mode, and errhysis of an anastomosis needle eye