A Remotely Powered Implantable Biomedical System With Location Detector

被引：25
作者：
Kilinc, Enver G. [1 ]
Ghanad, Mehrdad A. [1 ]
Maloberti, Franco [2 ]
Dehollain, Catherine [1 ]
机构：
[1] Ecole Polytech Fed Lausanne, Inst Elect Engn, CH-1015 Lausanne, Vaud, Switzerland
[2] Univ Pavia, Inst Elect Engn, I-27100 Pavia, Italy
来源：
IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS | 2015年 / 9卷 / 01期
关键词：
CMOS analog circuit design; data communication; implantable biomedical system; implantable medical device; inductive link; integrated circuits; location detection; locator; power management; remote powering; wireless power transfer; PRINTED SPIRAL COILS; TRANSMITTER; DESIGN; OPTIMIZATION; FREQUENCY; TELEMETRY;
D O I：
10.1109/TBCAS.2014.2321524
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
An universal remote powering and communication system is presented for the implantable medical devices. The system be interfaced with different sensors or actuators. A mobile external unit controls the operation of the implantable chip and reads the sensor's data. A locator system is proposed to align the mobile unit with the implant unit for the efficient magnetic power transfer. The location of the implant is detected with 6 mm resolution from the rectified voltage level at the implanted side. The rectified voltage level is fedback to the mobile unit to adjust the magnetic field strength and maximize the efficiency of the remote powering system. The sensor's data are transmitted by using a free running oscillator modulated with on-off key scheme. To tolerate large data carrier drifts, a custom designed receiver is implemented for the mobile unit. The circuits have been fabricated in 0.18 um CMOS technology. The remote powering link is optimized to deliver power at 13.56 MHz. On chip voltage regulator creates 1.8 V from a 0.9 V reference voltage to supply the sensor/actuator blocks. The implantable chip dissipates 595 mu W and requires 1.48 V for start up.
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收藏
页码：113 / 123
页数：11
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