intussusception suture

Vascular transplantation is a commonly used method when blood vessels are defective and cannot be directly sutured. The transplanted blood vessels can be selected from autologous arteries, veins, or allogeneic arteries, veins, or artificial blood vessels. However, in microvascular surgery, autologous and vein grafts are still the most commonly used. It is a method of suturing microscopic blood vessels end to end. The advantage is that the suture is not or rarely exposed in the lumen of the blood vessel, and the endocardium is not damaged, and the operation is simple and time-saving. The specific method is to insert 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 distal end of the proximal end; and the vein is opposite, and the distal end is inserted into the proximal end. The length of the blood vessel of the nested section is equal to the outer diameter of the blood vessel, and the edge of the blood vessel that is placed outside is sewed 2 to 3 needles on the outer surface of the blood vessel on the insertion side, and is fixed, and the anastomosis operation is completed. Treatment of diseases: vascular injury, limb vascular injury Indication 1. In the case of free tissue transplantation, since the vascular pedicle of the transplanted tissue is too short and there is a defect between the blood vessel and the affected area, the free blood vessel or blood vessel displacement cannot be used to overcome the defect. 2. Defects caused by damaged blood vessels after debridement, or tumor invasion, cannot be overcome by free blood vessels or blood vessel displacement. Preoperative preparation 1. The blood supply to the blood vessel must be normal. The outer diameter should be similar to that of the receiving blood vessel. It should not be too different and should be of sufficient length. 2. After the supply of the vascular resection, it should cause blood circulation disorder (ischemia or blood stasis) in the donor area. 3. In general, arterial defects were reconstructed with arterial grafts and venous defects were reconstructed with vein grafts. However, clinical practice accounts for a small number of arteries, and a small number of arteries, and some arteries will cause insufficient blood supply in some areas. On the contrary, the location of the vein is superficial, the number is large, and it is easy to find. The superficial vein is removed for a period of time, and it does not cause reflux disorder. Therefore, in microsurgery, autologous vein grafts are often used to repair venous and arterial defects. 4. The autologous veins for transplantation include saphenous vein, small saphenous vein, external jugular vein, cephalic vein, expensive vein, dorsal vein and dorsal vein. The main saphenous vein, small saphenous vein and external jugular vein are too large, which is not suitable for the repair of small vessel defects. Generally, these vein branches are used. These vein branches have appropriate outer diameters and thin walls. They are the same as the superficial veins of the upper limbs, the back of the feet, and the dorsal veins of the hands. They are commonly used for autologous vein grafts. Surgical procedure 1. A needle (a total of 3 needles) is passed through the outer membrane and the muscular layer at 120 degrees apart from the artery. Then, a needle is sutured through the entire wall layer at a position corresponding to the proximal suture at the distal end. 2, the sleeve is inserted into the end of the blood vessel into the end of the blood vessel, the suture is tightened, and the knot is completed, that is, the suture of the blood vessel is completed. complication Aneurysm, arteriovenous fistula, arterial embolism.

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