Concept of tension-free hernia repair This repair uses artificial biomaterials as a patch to strengthen the posterior wall of the inguinal canal, which overcomes the interference of traditional surgery with the normal anatomy of the tissues, and the layers are clearly defined, and there is no tension in the surrounding tissues after the repair, so it is named “tension-free hernia repair”. At present, the commonly used ones are flat piece tension-free hernia repair and hernia ring filling tension-free hernia repair. Compared with the traditional surgery, its advantages are obvious: 1, the operation is simple, save the operation time, shorten more than 30min than the traditional surgery on average; 2, due to the application of three-dimensional mesh repair, instead of the traditional surgery of the tissue overlap suture, do not increase the tension of the surrounding tissues, there is no intolerable postoperative pain, pulling sensation and localized rumbling; 3, three-dimensional mesh repair method for the hernia of the cause of the repair of the abdomen for the Flat, so that the human body feels more comfortable, will not move like other products, due to less suture, reducing the mesh plugs and other local discomfort and nerve damage. 4, three-dimensional mesh bottom sheet can bring the same effective repair effect as laparoscopic repair method, is a combination of the advantages of various tension-free repair methods and a new repair method for the causes of hernia. 5.The mesh has good histocompatibility and has certain anti-infection ability.