一种用于微创手术的坚固的单轴力传感器。
A robust uniaxial force sensor for minimally invasive surgery.
机构信息
Department of Electrical and Computer Engineering, University of British Columbia, Vancouver, BC, Canada.
出版信息
IEEE Trans Biomed Eng. 2010 May;57(5):1008-11. doi: 10.1109/TBME.2009.2039570. Epub 2010 Feb 17.
Abstract
This paper presents a novel miniature uniaxial force sensor for use within a beating heart during mitral valve annuloplasty. The sensor measures 5.5 mm in diameter and 12 mm in length and provides a hollow core to pass instrumentation. A soft elastomer flexure design maintains a waterproof seal. Fiber optic transduction eliminates electrical circuitry within the heart, and acetal components minimize ultrasound-imaging artifacts. Calibration uses a nonlinear viscoelastic method, and in vitro tests demonstrate a 0-4-N force range with rms errors of 0.13 N (< 3.2%). In vivo tests provide the first endocardial measurements of tissue-minimally invasive surgery instrument interaction forces in a beating heart.
摘要
本文提出了一种新颖的微型单轴力传感器，可用于二尖瓣环成形术中跳动的心脏内。该传感器直径为 5.5 毫米，长度为 12 毫米，提供了一个空心核心以通过仪器。软弹性体挠曲设计保持防水密封。光纤转换消除了心脏内的电路，而缩醛组件最大限度地减少了超声成像伪影。校准使用非线性粘弹性方法，体外测试显示 0-4-N 的力范围，均方根误差为 0.13 N（<3.2%）。体内测试首次提供了在跳动的心脏中组织微创外科手术器械相互作用力的心内膜测量结果。
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