[Technological characteristics of soldering the framework of heart valve prostheses and method of nondestructive quality control of the joints].
Among factors affecting the reliability of heart valve prostheses (HVP) the following ones are of a great importance: the temperature and the duration of soldering a big clamp of the HVP, the occurrence of nonmetal inclusions in the original material (the alloy 45KXBH), etc. Analysis is given to the factors causing the destruction of the HVP during its operation by contact effects, and the possibility of such failures is eliminated. The technique to test the soldering nondestructively is discussed. The tests of the HVP have been performed on the special test board under acceleration, and as they have shown after 528 mln cycles (that is approximately equal 13,2 years of continuous operation) the HVP remained normal, there were no failures.
D006350:Heart Valve Prosthesis / Q000592:standards*; D006801:Humans; D013677:Medical Laboratory Science; D008669:Metallurgy; D011786:Quality Control
Tekhnologicheskie osobennosti paĭki karkasov protezov klapanov serdtsa i metod nerazrushaiushchego kontrolia kachestva soedineniĭ.