vtioВестник трансплантологии и искусственных органовRussian Journal of Transplantology and Artificial Organs1995-1191Academician V.I.Shumakov National Medical Research Center of Transplantology and Artificial Organs", Ministry of Health of the Russian Federation10.15825/1995-1191-2020-2-107-112vtio-1190Research ArticleТрансплантация сердца и вспомогательное кровообращениеHeart Transplantation and Assisted CirculationЧисленный анализ влияния конфигурации канюли осевого насоса на образование зон стагнации и рециркуляции в левом желудочке сердцаNumerical analysis of the effect of the design of axial-flow pump cannula tip on stagnation and recirculation zones in the left ventricleНосовМ. C.NosovM. S.

Носов Михаил Сергеевич

Адрес: 123182, Москва, ул. Щукинская, д. 1. Тел. (903) 265-92-50. 

Mikhail Nosov

Address: 1, Shchukinskaya str., Moscow, 123182. Теl. (903) 265-92-50

nosovmi@yandex.ruИткинГ. П.ItkinG. P.ЗаикоВ. М.ZaikoV. M.МальгичевВ. А.MalgichevV. A.ФГБУ «Национальный медицинский исследовательский центр трансплантологии и искусственных органов имени академика В.И. Шумакова» Минздрава России; ФГАОУ ВО «Московский физико-технический институт (национальный исследовательский университет)»РоссияShumakov National Medical Research Center of Transplantology and Artificial Organs; Moscow Institute of Physics and TechnologyRussian FederationООО «ДОНА-М»РоссияDONA-M LtdRussian Federation202012072020222107112Copyright © Носов М.C., Иткин Г.П., Заико В.М., Мальгичев В.А., 20202020Носов М.C., Иткин Г.П., Заико В.М., Мальгичев В.А.Nosov M.S., Itkin G.P., Zaiko V.M., Malgichev V.A.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://journal.transpl.ru/vtio/article/view/1190

Цель: Провести анализ входной канюли имплантируемого осевого насоса системы длительного обхода левого желудочка сердца с целью минимизации осложнений, связанных с тромбообразованием. Материалы и методы. Рассматривалась гемодинамика для 4 различных вариантов конструкции входной канюли, длиной от 0 до 25 мм. Наибольшее внимание было уделено зонам у основания канюли. Анализ проводился средствами пакета OpenFOAM. Результаты. В работе показано, что зоны стагнации и рециркуляции прямо зависят от длины канюли при размещении в левом желудочке, и соответственно, повышается вероятность тромбообразования. Заключение. Полученные результаты показывают влияние конструкции входной канюли на вероятность тромбообразования в ней. При этом увеличение длины входной канюли приводит к увеличению зон застоя и рециркуляции, что дает основание для поиска других возможных ее модификаций.

Objective: to analyze the inflow cannula of an implantable axial-flow blood pump for a long-term left ventricular assist system in order to minimize thromboembolic complications. Materials and methods. Hemodynamics was considered for 4 different designs of the inflow cannula, from 0 mm to 25 mm long. Areas at the base of the cannula received the most attention. Analysis was performed using the OpenFOAM software. Results. It was revealed that sizes of stagnation and recirculation zones directly depended on the length of the cannula when placed in the left ventricle. Accordingly, longer cannula increases the risk of thrombosis. Conclusion. The design of an inflow cannula determines the likelihood of thrombosis in the cannula. Longer inflow cannula increases stagnation and recirculation zones. This provides a basis for a search for other possible modifications.

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The authors declare that there are no conflicts of interest present.