FIELD: heart surgery. SUBSTANCE: support has circular structure which is hollow figure made of flat thermoplastic closed-type material and having first and second axial ends oriented in opposite directions. First axial end is provided with bearing projections oriented in axial direction, distributed over circumference of circular structure and having rounded vacant ends. Axial hollows are made at second axial end opposite bearing projections. Protrusions are positioned between axial hollows. Circular structure is provided with strengthened circular section from which thickness of circular structure wall is narrowed in direction of protrusions and bearing projections. EFFECT: enhanced reliability. 8 cl, 7 dwg
