Design and test of an autonomous sensor for force measurements in human knee implants

被引:28
作者
Crescini, Damiano [1 ]
Sardini, Emilio [1 ]
Serpelloni, Mauro [1 ]
机构
[1] Univ Brescia, DII, Dept Informat Engn, I-25123 Brescia, Italy
关键词
Autonomous sensor; Load monitoring; Biosensor; Strain sensor; Total joint arthroplasty; Force transducer; Knee prosthesis; Telemetry; Instrumented implant; Biomechanics; Biomechatronics; IN-VIVO MEASUREMENT; INSTRUMENTED IMPLANT; CONTACT FORCES; TIBIAL FORCES; ARTHROPLASTY; DEVICE; MOMENTS; JOINT;
D O I
10.1016/j.sna.2010.12.010
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
In vivo monitoring of human knee implants after total arthroplasty increases information concerning articular motion and loading conditions. The autonomous sensor proposed carries out force measurements in a protected environment and wirelessly transmits data directly from the inside of the implant to an external readout unit. The autonomous sensor is fully contained in the polyethylene insert. Batteries are completely eliminated: the system gathers energy from an externally applied magnetic field using a miniature coil inside the implant. The data generated from this device will provide data for new designs, techniques and implementations. The forces transmitted across the knee joint during normal human activities such as walking, running or climbing can be directly measured. Furthermore, the device can be used to improve design, refine surgical instrumentation, guide post-operative physical therapy and detect human activities that can overload the implant. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码:1 / 8
页数:8
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