Vascular intussusception

Vascular transplantation is a commonly used method when blood vessels are defective and cannot be sutured directly. Transplanted blood vessels can be autologous arteries, veins, allogeneic arteries, veins, or artificial blood vessels. However, in microvascular surgery, autologous arterial and venous transplantation is still the most commonly used. It is a method of suture microvascular end to end. The advantage is that there is no or little suture in the lumen of the blood vessel, which does not damage the endometrium of the blood vessel. The operation is simple and time-saving. The specific method is to sleeve one end of the blood vessel into the lumen of the other end according to the direction of blood flow, that is, the artery should be inserted into the proximal end of the heart; the vein is the opposite, and the distal end is inserted into the proximal end. The length of the blood vessel in the insertion section is equal to the outer diameter of the blood vessel, and 2 to 3 stitches of the outer edge of the blood vessel are sewn on the adventitia of the blood vessel on the insertion side to fix the anastomosis operation.