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Thromboembolic and haemorrhagic complications are the primary causes of mortality and morbidity in patients with artificial hearts, which are known to be induced by the interactions between blood flow and artificial material surfaces. The authors have been developing a new mechanical artificial myocardial assist device by using a sophisticated shape memory alloy fibre in order to achieve the mechanical...
The authors have proposed a new physiological index rhomax which is the maximum cross-correlation coefficient between blood pressure and heart rate whose frequency components are limited to the Mayer wave-band (0.04-0.15 Hz). The advantages of this index are small individual difference and high reproducibility compared with other physiological indices which are calculated independently single cardiovascular...
Aiming to contribute an improvement of medical robot technology, the authors have been developing a new evaluation method on cardiac function, which is based on surface measurement of the heart. This system will be able to evaluate a function of surgical robot in the future. As the preliminary study, an animal experiment was performed to examine various cardiac functions under normal pulsatile and...
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