Первое в мире титановое сердце с магнитной подвеской теперь бьется в груди живого человека

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Первое в мире титановое сердце с магнитной подвеской теперь бьется в груди живого человека

Компания BiVACOR совместно с учеными из Техасского института исследования сердца провела операцию по установке первого в истории сердечного протеза, в котором нет подвижных частей. Это временная мера, промежуточный вариант перед размещением импланта или донорского сердца. Идея в том, что такие устройства требуют минимального обслуживания и позволяют пациентам спокойно дождаться своей очереди на замену сердца, как бы долго это ни заняло.

Главное преимущество нового устройства в отсутствии подвижных частей, которые подвержены износу. Сердце, даже искусственное – не та часть тела, которую можно регулярно изымать ради профилактических работ. Поэтому инженеры из BiVACOR воспользовались наработками в транспортных системах с магнитной подвеской. Они изготовили, цитата: «бивентрикулярный роторный насос с единственной движущейся частью, которая использует ротор с магнитной подвеской, для прокачки крови в случае отказа желудочков сердца».

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Разработка велась с 2013 года, инженеры искали способы снизить нагрузку на подвижные части искусственного сердца, в результате чего пришли к идее подвесить основной механизм в магнитном поле. Параллельно была решена задача по устранению из конструкции клапанов – они также подвержены сильному износу. Итоговая версия имеет размеры с кулак и способна перекачивать до 12 литров крови в минуту, чего вполне достаточно даже для занятий спортом.

Минус конструкции в том, что ей требуется внешний источник энергии и контроллер для работы. Но, поскольку устройство изначально задумывалось как временное, это не должно стать преградой для его использования. Первый пациент с новым сердцем чувствует себя нормально, на очереди еще две операции по установке титановых сердец и клинические наблюдения.

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    References:

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