Y–Z deformable magnetic ring for the treatment of rectal stricture: A case report and review of literature

Figure 2 Operation plan. A: An S-shaped magnetic ring is inserted through the anus; B: The S-shaped magnetic ring passes through the rectal stenosis; C: The S-shaped magnetic ring successfully passed the narrow rectum; D: Deformation of the S-shaped magnetic ring; E: The S-shaped magnetic ring deforms to an O-shape; F: The daughter ring and the parent ring attract each other and compress the narrow section of the rectum; G: Rectum stenosis recanalizes and the magnetic ring is discharged through the anus.