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Recent Innovations in Chemical Engineering

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ISSN (Print): 2405-5204
ISSN (Online): 2405-5212

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Research Article

Effect Produced by the Treatment Type on the Performance of the Artificial Heart Valve Welded Frame

Author(s): German Vasilevich Pachurin, Nikolay Aleksandrovich Kuzmin, Maria Vadimovna Mochalina* and Alexey Aleksandrovich Filippov

Volume 16, Issue 3, 2023

Published on: 06 September, 2023

Page: [220 - 225] Pages: 6

DOI: 10.2174/2405520416666230809124226

Price: $65

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Abstract

Background: The welded joint loss of performance is largely determined by the heterogeneity of the structural state of the heat-affected zones. The basic materials from which the artificial heart valve welded frames are made are technically pure titanium grade VT1-OS and alloy grade 40 KHNM with the required biomedical properties.

Objective: The study of the structural state, and changes in mechanical characteristics under static and cyclic loading of welded joints made of pure titanium grade VT1-OS and alloy grade 40 KHNM.

Method: The paper investigates structural changes and mechanical characteristics under static and cyclic loading in Ringer-Locke saline solution of welded T-shaped joints made of pure titanium grade VT1-OS and alloy grade 40 KHNM, simulating the nodes of an artificial heart valve subject to maximum cyclic loads during operation.

Result: It is revealed that the structural and mechanical heterogeneity along the length of the welded joints of the studied materials determines a loss of mechanical performance, both under static and cyclic loading.

Conclusion: Experimental batches of welded elements of artificial heart valve assemblies made of VT1-OS titanium and 40 KHNM alloy according to the established optimal modes have successfully passed full-scale tests on physiological and biological stands in conditions as close as possible to the operational ones.

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