my name is khalilulin timur abdulaimovich, i am a cardiac surgeon, doctor of medical sciences. i saw heart transplant surgery and it was wonderful and somewhat unusual, but it would be great to be part of that team. this happened many years later; previously, artificial features had been developed so that the patient would still wait transplants. he is fitted with such a compact left ventricular bypass device. the imported pump, which doctors now use, can be implanted into a child weighing 20 kg or more. the russian development will make it possible to use it in patients with less weight, which means that more children will survive to surgery, although for some the device will become a companion for life. when there are absolute contraindications to transplantation of the left ventricular function of the heart, avoid the formation of blood clots and damage to the formed elements. blood, before it becomes part of clinical practice, experts test its performance on animals, well, these experiments are carried out on animals that have low weight, this is important because it simula