Evaluation of the force loads on the elements of artificial heart valves from the results of processing echocardiograms
Kiselev, S.N.; Agafonov, A.V.; Kuz'mina, N.B.; Zubkova, G.A.
Meditsinskaia Tekhnika 4: 9-12
1979
ISSN/ISBN: 0025-8075 PMID: 481177 Document Number: 148192
Approaches to further improving the valve prosthesis construction greatly depend on the knowledge of the physical load affecting the elements of artificial cardiac valves that operate in the human organism. An analysis of echocardiograms is given. They were recorded in the patients with implanted artificial ball heart valves, type MK4-2.25. The design values for the force of the ball impact against the valve shell are presented. The echocardiogram analysis revealed a phenomenon of the fibrotic ring deformation under the ball action on the valve shell and the degree of this deformation has been determined.