基于磁流变技术的新型腰椎穿刺培训模拟器

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL
Chunying Zheng , Xin Yang , Fei Gao , Wenbin Zou , Hui Huang , Yuzheng Li , Xiaochun Zheng
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引用次数: 0

摘要

针对现有模拟器难以准确再现用针穿刺关键组织层时产生的阻力下降,以及使用体验不佳的问题,本文基于磁流变液在磁场作用下的连续可控性和快速响应性,提出了一种腰椎穿刺训练模拟器(LPTS),可全程准确模拟皮肤、皮下脂肪、棘上韧带等组织内的穿刺反馈力。通过采用双杆结构和合理布置阻尼通道间隙,最大限度地减少了组织运动过程中机械摩擦和零场阻尼力对反馈力的影响。本文介绍了原始数据的采集和建模分析,并在此基础上进行了模拟器的设计、仿真和机械测试。最后,建立了模拟器的性能测试平台,以评估其对预期穿刺强度的跟踪性能和穿刺感觉的再现性。结果表明,在突破棘上韧带、棘间韧带、黄韧带和硬脑膜的关键步骤中,实验穿刺强度与预期穿刺强度的偏差为 0.35 N 至 0.61 N,相对误差低于 10%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
New training simulator for lumbar puncture base on magnetorheological

In response to the difficulties in accurately reproducing the resistance drop generated by puncturing key tissue layers with a needle and the poor experience in existing simulators, based on the continuous controllability and rapid response of magnetorheological fluid under the influence of a magnetic field, this paper proposes a lumbar puncture training simulator(LPTS) that can accurately simulate the puncture feedback force within tissues such as the skin, subcutaneous fat, and supraspinous ligament throughout the entire process. By using a dual rod structure and reasonably arranging the damping channel gap, the influence of mechanical friction and zero-field damping force on the feedback force during tissue progression is minimized. This paper introduces the acquisition and modeling analysis of raw data, and based on this, the design, simulation, and mechanical testing of the simulator are carried out. Finally, a performance testing platform for the simulator is established to evaluate its tracking performance of the expected puncture strength and the reproducibility of the puncture sensation. The results show that the experimental puncture strength deviates from the expected puncture strength by 0.35 N to 0.61 N in the crucial steps of breaking through the supraspinous ligament, interspinous ligament, ligamentum flavum, and dura mater, with a relative error below 10 %.

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来源期刊
Medical Engineering & Physics
Medical Engineering & Physics 工程技术-工程:生物医学
CiteScore
4.30
自引率
4.50%
发文量
172
审稿时长
3.0 months
期刊介绍: Medical Engineering & Physics provides a forum for the publication of the latest developments in biomedical engineering, and reflects the essential multidisciplinary nature of the subject. The journal publishes in-depth critical reviews, scientific papers and technical notes. Our focus encompasses the application of the basic principles of physics and engineering to the development of medical devices and technology, with the ultimate aim of producing improvements in the quality of health care.Topics covered include biomechanics, biomaterials, mechanobiology, rehabilitation engineering, biomedical signal processing and medical device development. Medical Engineering & Physics aims to keep both engineers and clinicians abreast of the latest applications of technology to health care.
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