The anoscope and Olympus electronic colonoscopy used in Chongqing Medical Bo Hospital have the functions of examination, diagnosis and treatment. The image is clear, the lens is delicate and the depth of field is large. Intestinal mucosal lesions of ascending colon, transverse colon, descending colon and rectum can be directly observed, and the examination of small lesions, precancerous lesions and early intestinal cancer is more accurate.

Compared with the traditional operation, the new method of Lu's ligation in Chongqing Medical Expo Hospital adopts the treatment method of "anal pad". Under the condition of retaining the anal pad tissue, part of the internal hemorrhoid, the upper hemorrhoid mucosa and submucosa were annularly removed for about 3-4 cm, and the anastomosis was completed immediately. The new method of Lu's ligation not only achieved the purpose of blocking the supply of blood vessels on hemorrhoids, but also removed the redundant mucosal tissue, thus achieving the purpose of hanging and fixing the anal pad upward.

The procedure of Roux's ligation in Chongqing Medical Bo Hospital is circular excision of hemorrhoid mucosa and suspension fixation of anal pad. Using a special instrument called "Roux Ligation Stapler", the rectal mucosa with prolapse of hemorrhoid was excised annularly. The operation takes about 20-30 minutes, and normal defecation can be achieved within 24 hours after operation, without pain and without affecting the quality of daily life.