Belarusian cardiac surgeons held unique operation to save a child's life. Before, no such operations had been held in any clinic of the world. Tricuspid valve prosthesing was held without an open manipulation. Just four small punctures were made in the boy's body. 11 experts held the surgery, while another 5 kept a vigil in case of complications. Yet, their assistance was not needed. Europe and USA showed interest in the achievement of the Belarusian surgeon. Now, the experts of the National scientific and practical center are preparing a publication for leading medical magazines.