Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device
Abstract Formations of clots were found inside the hydrodynamic bearings of the left ventricular assisted devices (LVADs) and caused tremendous risks to the long-term use of these devices. For the hydrodynamic bearings used in the LVAD, not only the lubrication status but also the motion of the bloo...
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| Format: | Article |
| Language: | English |
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Tsinghua University Press
2019-07-01
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| Series: | Friction |
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| Online Access: | http://link.springer.com/article/10.1007/s40544-019-0300-8 |
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| author | Xiaobing Zheng Yongjian Li Haosheng Chen Shengshou Hu Jianye Zhou |
| author_facet | Xiaobing Zheng Yongjian Li Haosheng Chen Shengshou Hu Jianye Zhou |
| author_sort | Xiaobing Zheng |
| collection | DOAJ |
| description | Abstract Formations of clots were found inside the hydrodynamic bearings of the left ventricular assisted devices (LVADs) and caused tremendous risks to the long-term use of these devices. For the hydrodynamic bearings used in the LVAD, not only the lubrication status but also the motion of the blood cells in the bearing will take great effect on the performance of the device. Based on the analysis of the hydrodynamic pressures distribution and the flowing trajectory of red blood cells in the lubrication film, the bearing is designed in a region where enough hydrodynamic pressure is generated to float the rotor to reduce the wear, and the entrainment of red blood cells in the gap of the bearing can be prevented to avoid the formation of clots. |
| format | Article |
| id | doaj-art-d616a3c48ad749709e9b4331b8a08597 |
| institution | DOAJ |
| issn | 2223-7690 2223-7704 |
| language | English |
| publishDate | 2019-07-01 |
| publisher | Tsinghua University Press |
| record_format | Article |
| series | Friction |
| spelling | doaj-art-d616a3c48ad749709e9b4331b8a085972025-08-20T03:10:01ZengTsinghua University PressFriction2223-76902223-77042019-07-018474675410.1007/s40544-019-0300-8Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted deviceXiaobing Zheng0Yongjian Li1Haosheng Chen2Shengshou Hu3Jianye Zhou4State Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical CollegeState Key Laboratory of Tribology, Tsinghua UniversityState Key Laboratory of Tribology, Tsinghua UniversityState Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical CollegeState Key Laboratory of Cardiovascular Disease, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical CollegeAbstract Formations of clots were found inside the hydrodynamic bearings of the left ventricular assisted devices (LVADs) and caused tremendous risks to the long-term use of these devices. For the hydrodynamic bearings used in the LVAD, not only the lubrication status but also the motion of the blood cells in the bearing will take great effect on the performance of the device. Based on the analysis of the hydrodynamic pressures distribution and the flowing trajectory of red blood cells in the lubrication film, the bearing is designed in a region where enough hydrodynamic pressure is generated to float the rotor to reduce the wear, and the entrainment of red blood cells in the gap of the bearing can be prevented to avoid the formation of clots.http://link.springer.com/article/10.1007/s40544-019-0300-8hydrodynamic lubricationjournal bearingleft ventricular assisted deviceclot |
| spellingShingle | Xiaobing Zheng Yongjian Li Haosheng Chen Shengshou Hu Jianye Zhou Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device Friction hydrodynamic lubrication journal bearing left ventricular assisted device clot |
| title | Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| title_full | Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| title_fullStr | Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| title_full_unstemmed | Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| title_short | Investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| title_sort | investigation on hydrodynamic lubrication of bearings in a left ventricular assisted device |
| topic | hydrodynamic lubrication journal bearing left ventricular assisted device clot |
| url | http://link.springer.com/article/10.1007/s40544-019-0300-8 |
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