Ozeki Toshinaga, Chinzei Tsuneo, Abe Yusuke, Saito Itsuro, Isoyama Takashi, Mochizuki Shuuichi, Ishimaru Mitsuhiko, Takiura Koki, Baba Atsushi, Toyama Takahiro, Imachi Kou
Research Center for Advanced Science and Technology, The University of Tokyo, Tokyo, Japan.
ASAIO J. 2003 Jul-Aug;49(4):469-74.
A transcutaneous energy transmission system (TETS) for artificial hearts and ventricular assist devices uses electrical coupling of power between external and implanted coils. If the position of coils changes relative to each other, the TETS cannot feed the required power of the implanted device. During activity or sleep, the coils may move accidentally. TETS users and the people around them have to pay attention to this because the range of the position where the required power can be fed efficiently is not wide. Therefore, we added functions for the position changes of the coils to the TETS. Regular, cautious, and irregular positions were introduced, and the ranges of them were decided upon in our experiments. The cautious position was determined by the area where the change of the relative position of the coils was relatively small. When the coils were in the cautious position, the circuit was tuned by way of changing the resonant point. This modulation could give good power efficiency in the cautious position. When the coils were in the irregular position, an alarm switch was turned on. These functions ease the restriction of the coil position and give better quality of life (QOL) than do the conventional TETS.
用于人工心脏和心室辅助装置的经皮能量传输系统（TETS）利用外部线圈和植入线圈之间的电力耦合。如果线圈的位置相对彼此发生变化，TETS就无法为植入装置提供所需的功率。在活动或睡眠期间，线圈可能会意外移动。TETS使用者及其周围的人必须注意这一点，因为能够有效馈送所需功率的位置范围并不宽。因此，我们在TETS中增加了针对线圈位置变化的功能。引入了常规、谨慎和不规则位置，并在我们的实验中确定了它们的范围。谨慎位置由线圈相对位置变化相对较小的区域确定。当线圈处于谨慎位置时，通过改变谐振点来调谐电路。这种调制可以在谨慎位置提供良好的功率效率。当线圈处于不规则位置时，警报开关会打开。这些功能减轻了对线圈位置的限制，并且比传统的TETS提供了更好的生活质量（QOL）。
