NDLI: Low-power circuits design for the Wireless Force Measurement system of the Total Knee Arthroplasty

Content Provider	IEEE Xplore Digital Library
Author	Hong Chen Ming Liu Weiyi Wan Chen Jia Chun Zhang Zihua Wang
Copyright Year	2010
Description	Author affiliation: Institute of Microelectronics, Tsinghua University, Beijing 10084 China (Hong Chen; Ming Liu; Weiyi Wan; Chen Jia; Chun Zhang; Zihua Wang)
Abstract	This paper proposes a novel wireless force measurement system for the Total Knee Arthroplasty (TKA) to improve the ligament balancing procedure during TKA. The force measurement system is comprised of a Wireless Force Measurement Spacer (WFMS) and the display part. They communicate with each other by the Radio Frequency (RF) signal. The WFMS is designed to measure the force between the WFMS and the femoral component of the artificial implants and to transmit the force data wirelessly by a low power transceiver. The display part demonstrates the force data in 3D images in real time. The WFMS composes of a sensors array, a Universal Transducer Interfaces (UTIs) array, a low-power sub-threshold microprocessor and a transceiver. The sub-threshold 8-bit microprocessor is taped out with 0.18µm CMOS technology. The testing results of the microprocessor show that the leakage power of 46nW and the dynamic power of 385nW@165kHz are achieved with the operating voltage of 350mV. The test results of the system are given and the errors of the system are analyzed. The results verified the reliability of the system. The future work is to design the microprocessor and a lower power transceiver within a single chip.
Starting Page	3539
Ending Page	3542
File Size	478668
Page Count	4
File Format	PDF
ISBN	9781424441235
ISSN	1557170X
DOI	10.1109/IEMBS.2010.5627763
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-08-31
Publisher Place	Argentina
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Microprocessors Implants Force measurement Force Knee Sensors Transceivers
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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