Normal. The 3D biological band tightening was created by the team of plastic surgery and pelvic floor repair experts from Peking Union Medical College Hospital. Modern minimally invasive surgery concept combined with regenerated tissue engineering materials was adopted to solve the problems of female patients such as vaginal relaxation, vaginal cavity contraction, vaginal orifice contraction, recovery of superficial transverse perineal muscle, recovery of perineal body structure, vaginal front and rear wall bulging, stress urinary incontinence and so on.