2016 Fiscal Year Final Research Report
Study on impeller dynamics in blood and its application to additional functions in a magnetically-levitated ventricular assist device
| Project/Area Number |
15K17959
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Design engineering/Machine functional elements/Tribology
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| Research Institution | Tokyo Institute of Technology |
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Principal Investigator |
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| Research Collaborator |
SHINSHI Tadahiko 東京工業大学, 科学技術創成研究院, 教授 (60272720)
MARUYAMA Osamu 産業技術総合研究所, 健康工学研究部門, 研究グループ長 (30358064)
SAKOTA Daisuke 産業技術総合研究所, 健康工学研究部門, 研究員 (40588670)
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| Project Period (FY) |
2015-04-01 – 2017-03-31
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| Keywords | 磁気浮上 / 人工心臓 / 血液ポンプ / 粘度 / 流量推定 / 血栓 / 血液凝固 |
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| Outline of Final Research Achievements |
Ventricular assist devices (VADs) have been used for a long-term support of heart failure patients. In addition to the development of the devices, development of technologies to improve both QOL and survival rate is also desired these days. In this study, we have developed a method for measuring the blood viscosity in a sensorless manner and applied it to high-accurate estimation of the flow rate and detection of blood coagulation.
In this method, sinusoidal current is applied to the electromagnet and impeller is vibrated. By measuring the phase difference of the impeller displacement and current in the electromagnet, blood viscosity was estimated. This method is applied to the flow rate estimation, which consists of the motor torque, rotational speed of the impeller and viscosity. Finally, the coagulation of porcine blood inside the pump was detected by measuring the viscosity of blood.
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| Free Research Field |
メカトロニクス，医療機器
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