VALVED AORTIC ROOT PROSTHESIS

摘要

The invention relates to medical technology and can be used in cardiac surgery for replacing a damaged aortic root with an aortic valve. The valved aortic root prosthesis comprises a vascular prosthesis 1 with a cuff 2 fastened to the proximal end thereof and a valve mounted in the cuff 2. The cuff 2 is provided with three marks 3 at an angle of 120 degrees from each other, which divide the cuff into three zones 4 corresponding to the right coronary sinus, the left coronary sinus and the non-coronary sinus. The vascular prosthesis 1 is provided with two apertures 5 and 6 situated above the zones corresponding to the right and left coronary sinuses. Each aperture 5 and 6 has a vascular prosthesis 7 and 8 sewn thereto for connection to the adjacent coronary artery. When implanting the prosthesis, the surgeon, guided by the marks 3 on the cuff 2, orients the vascular prosthesis 1 in such a way that the sewn-on vascular prostheses 7 and 8 are situated in the zones corresponding to the position of the right and left coronary sinuses. Upon completing the procedure of sewing the cuff 2 to the fibrous ring of the heart valve undergoing replacement, the surgeon successively sews the ends of the coronary arteries to the ends of the vascular prostheses 7 and 8. Since the vascular prostheses 7 and 8 have corrugated walls and are thus stretchable and flexible, this procedure is significantly easier than that of sewing the coronary vessels directly to the vascular prosthesis 1. The proposed valved aortic root prosthesis provides a simplified procedure for implantation of the prosthesis and a reduced risk of post-operative complications.