A robust uniaxial force sensor for minimally invasive surgery.
A robust uniaxial force sensor for minimally invasive surgery.
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DOI：
10.1109/tbme.2009.2039570
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发表时间：
2010-05
期刊：
影响因子：
--
通讯作者：
Howe RD
中科院分区：
文献类型：
--
作者：
Yip MC;Yuen SG;Howe RD
本文介绍了一种新型的微型单轴力传感器，用于心脏跳动期间二尖瓣环成形术。该传感器测量直径为5.5 mm，长度为12 mm，并提供一个中空的核心，以通过仪器。柔软的弹性体弯曲设计保持防水密封。纤维光学转换消除了心脏内的电路，缩醛成分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，体外测试证明0-4 N力范围，均方根误差为0.13 N（<3.2%）。体内试验提供了第一次在跳动的心脏中对组织-微创手术器械相互作用力进行内镜测量。
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.