ALLOGRAFT (EMBODIMENTS), METHOD FOR PRODUCTION THEREOF (EMBODIMENTS) AND METHOD FOR CONDUCTING AORTIC PROSTHESIS Russian patent published in 2020 - IPC A61F2/06 

FIELD: medicine.

SUBSTANCE: group of inventions refers to medicine, namely to cardiosurgery of congenital and acquired heart diseases. Allograft is a tube of vascular tissue of vessels of the main type with three semilunar valves, a fibrous ring and a branch of the pulmonary artery. Zone of the fibrous ring of the valve of the pulmonary artery is provided with endocardial stripe 3–4 mm wide along the attachment edge of the pulmonary artery flaps to which a branch of the pulmonary artery is fixed. Other version of the allograft consists of a pulmonary artery shaft, one of the branches of the pulmonary arteries, two half-moon leaves and a branch of the pulmonary artery connected to the fibrous ring of the pulmonary artery by a double-row blanket suture. Valves flaps are sutured so that flaps are aligned along axis of commissural rods, and in zone of fibrous ring of pulmonary artery valve there is a strip of endocardium with width of 3–4 mm along edge of attachment of flaps of pulmonary artery. Method of aortic prosthesis by modified Ross operation includes resection of native aortic root with valves and its replacement by one of allografts selected from specified versions.

EFFECT: group of inventions allows increasing durability of allografts, preventing the development of an inflammatory reaction and calcinosis in the area of attachment of valve flaps to the valve ring after the muscular area removal, as well as reducing the number of repeated operations in infants and newborns.

8 cl, 4 dwg, 1 tbl