Implantable wireless battery recharging system for bladder pressure chronic monitoring.
Implantable wireless battery recharging system for bladder pressure chronic monitoring.
复制标题
用于膀胱压力长期监测的植入式无线电池充电系统。
DOI：
10.1039/c5lc00821b
复制
发表时间：
2015
期刊：
影响因子：
6.1
通讯作者：
Damaser,Margot
中科院分区：
文献类型：
--
作者：
Young,DarrinJ;Cong,Peng;Suster,MichaelA;Damaser,Margot
本文提出了一种用于膀胱压力长期监测的植入式无线电池充电系统设计。该无线充电系统由外部直径15厘米的6匝供电线圈和尺寸为7毫米×17毫米×2.5毫米、18匝的硅胶封装植入式矩形线圈组成，线圈内还封装了直径3毫米、长12毫米的可充电电池、两根铁氧体棒、一块ASIC和一个调谐电容器。对于 100 μA 的恒定充电电流，需要通过调谐线圈将 700 μW 的射频功率耦合到植入模块中。分析和实验证实，当两个线圈同轴对齐或轴向偏移 6 cm 且倾斜角度为 30° 时，在最佳频率 3 MHz 下分别需要 3.5 W 或 10 W 的外部功率，以覆盖 20 cm 的大植入深度。
This paper presents an implantable wireless battery recharging system design for bladder pressure chronic monitoring. The wireless recharging system consists of an external 15 cm-diameter 6-turn powering coil and a silicone-encapsulated implantable rectangular coil with a dimension of 7 mm × 17 mm × 2.5 mm and 18 turns, which further encloses a 3 mm-diameter and 12 mm-long rechargeable battery, two ferrite rods, an ASIC, and a tuning capacitor. For a constant recharging current of 100 μA, an RF power of 700 μW needs to be coupled into the implantable module through the tuned coils. Analyses and experiments confirm that with the two coils aligned coaxially or with a 6 cm axial offset and a tilting angle of 30°, an external power of 3.5 W or 10 W is required, respectively, at an optimal frequency of 3 MHz to cover a large implant depth of 20 cm.