METHOD OF SURGICAL TREATMENT OF OBSTRUCTIVE HYPERTROPHIC CARDIOMYOPATHY IN CHILDREN UNDER 5 YEARS OF AGE Russian patent published in 2024 - IPC A61B17/00 

FIELD: medicine; cardiovascular surgery.

SUBSTANCE: transaortic extended septal myectomy is performed, with the first incision of the interventricular septum starting 4–5 mm below the right coronary sinus and continuing towards the apex of the heart. The second incision of the interventricular septum is made, retreating 2–3 mm downwards from the commissure between the left and right coronary cusps towards the apex of the left ventricle. Then the two incisions are connected to each other and a trapezoidal section of the interventricular septum is excised. Then, additionally, the branches of Conchotome instrument are inserted through the fibrous ring of the aortic valve and the apical and mid-ventricular parts of the interventricular septum, abnormal papillary muscles and secondary chords of the mitral valve are bitten out.

EFFECT: method makes it possible to effectively correct apical and midventricular obstruction without damaging the aortic and mitral valve leaflets, iatrogenic ventricular septal defect, heart rhythm disturbances and residual obstruction of the left ventricular outflow tract.

1 cl, 1 dwg, 1 ex