On May 13, the trial sheep "Tianjiu" met with the public at the press conference.
On the morning of the 13th, a special sheep appeared at Tianjin Teda International Cardiovascular Hospital (abbreviated as Taixin Hospital). Without the medical equipment hanging on his body, this pacing sheep looks healthy and lively, no different from ordinary sheep. But in the future, the equipment installed on this sheep will probably bring good news to tens of millions of chronic heart failure patients in China. According to reports, the experimental sheep "Tianjiu" installed China's first implantable third-generation ventricular assist device-the magnetic fluid double suspension blood pump, which was successfully developed by the Eighteenth Research Institute of China Launch Vehicle Technology Institute and Taixin Hospital . As of press time, "Tianjiu" has been alive for 61 days, setting the longest survival record for implanting a third-generation ventricular assist device in China. At the same time, it was the first time in China to carry a battery and controller for free movement, which reached the clinical implantation of blood pumps. The simulated state marks a major breakthrough in the development of China's third-generation ventricular assist device.
Chronic heart failure is one of the most common and most harmful diseases in cardiovascular diseases, and it is the end-stage manifestation of many types of cardiovascular diseases. At present, there are about 80 million heart failure patients in the world, of which there are more than 16 million patients in China. There is no other effective therapy except circulation assist and heart transplantation. However, due to the lack of cardiac donors, it is far from meeting the needs of patients; ventricular assist devices are recognized as the most effective treatment methods in the world. At present, the third-generation blood pump commonly used in the international medical community uses rotor suspension as a technical feature, and pushes blood in a non-contact manner to reduce energy consumption and extend patient life. In the early 1980s, China began to conduct research on ventricular assist devices, but so far there is no domestic heart assist device for clinical application. The price of a foreign device is nearly one million yuan, which makes domestic patients look forward to the "pump". Therefore, it is urgent to develop the third-generation domestic ventricular assist device with excellent performance and low price as soon as possible.
Zhu Chenglin, director of the Eighteenth Research Institute of China Launch Vehicle Technology Research Institute, introduced that the research team pioneered the application of magnetic levitation and dynamic pressure bearing technology in the field of aerospace servo technology to centrifugal blood pumps.
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