植入式无线电力接收器的小型化
Miniaturization of implantable wireless power receiver.
作者信息
Poon Ada S Y
机构信息
Electrical Engineering, Stanford University, USA.
出版信息
Annu Int Conf IEEE Eng Med Biol Soc. 2009;2009:3217-20. doi: 10.1109/IEMBS.2009.5333162.
Implantable medical devices will play an important role in modern medicine. To reduce the risk of wire snapping, and replacement and corrosion of embedded batteries, wireless delivery of energy to these devices is desirable. However, current autonomous implants remain large in scale due to the operation at very low frequency and the use of unwieldy size of antennas. This paper will show that the optimal frequency is about 2 orders of magnitude higher than the conventional wisdom; and thereby the power receiving coils can be reduced by more than 100 fold without sacrificing either power efficiency or range. We will show that a mm-sized implant can receive 100's microW of power under safety constraints. This level of power transfer is sufficient to enable many functionalities into the micro-implants for clinical applications.
可植入医疗设备将在现代医学中发挥重要作用。为降低导线断裂、嵌入式电池更换及腐蚀的风险，向这些设备进行无线能量传输是可取的。然而，由于在极低频率下运行以及使用尺寸笨重的天线，当前的自主植入设备规模仍然很大。本文将表明，最佳频率比传统认知高约2个数量级；因此，在不牺牲功率效率或传输距离的情况下，功率接收线圈可缩小100多倍。我们将表明，在安全限制条件下，毫米尺寸的植入物能够接收100微瓦以上的功率。这种功率传输水平足以使微型植入物具备多种临床应用功能。
Zotero 插件