The silicone material of the flat chested sex doll is expanding medical application scenarios. The Canadian Rehabilitation Center transformed the life size sex doll into a postoperative rehabilitation tool for breast cancer. The cell compatibility of medical silicone allows direct contact with the surgical wound. The elastic parameters of the customized flat-chested area (Young's modulus 15kPa) perfectly match the needs of soft tissue repair. Clinical trials show that the patient's pain index is reduced by 41%. This functional transformation has upgraded silicone from an adult product to a medical consumable, opening up a new market space.