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유한요소 모델 변수의 역 추정법을 이용한 생체의 물성 규명
안범모(Bummo Ahn),김영진(Yeongjin Kim),신현정(Jennifer H. Shin),김정(Jung Kim) 대한기계학회 2009 大韓機械學會論文集A Vol.33 No.11
An inverse finite element (FE) model parameter estimation algorithm can be used to characterize mechanical properties of biological tissues. Using this algorithm, we can consider the influence of material nonlinearity, contact mechanics, complex boundary conditions, and geometrical constraints in the modeling. In this study, biomechanical experiments on macro and micro samples are conducted and characterized with the developed algorithm. Macro scale experiments were performed to measure the force response of porcine livers against mechanical loadings using one-dimensional indentation device. The force response of the human liver cancer cells was also measured by the atomic force microscope (AFM). The mechanical behavior of porcine livers (macro) and human liver cancer cells (micro) were characterized with the algorithm via hyperelastic and linear viscoelastic models. The developed models are suitable for computing accurate reaction force on tools and deformation of biomechanical tissues.
안범모(Bummo Ahn),박기한(Kihan Park),이효상(Hyosang Lee),김정(Jung Kim) 제어로봇시스템학회 2010 제어·로봇·시스템학회 논문지 Vol.16 No.9
Robotic techniques can be one of the promised solutions to address the prostate cancer which is one of the most important public health problems in medical fields. Despite several past and on-going dedicated researches, the systematic techniques and completed theories have not been established well. Therefore we review the state-of-the-art literature on the applications of engineering technologies with particular focus on diagnosis and treatment of prostate cancer. The current status of the elastography and systematic DRE are presented as novel diagnostic tools, and an overview of the applied technologies to address the limits of the treatment (radical prostectomy and brachytherapy) is reviewed.
정회룡(Hoeryong Jung),김상준(Sangjoon J. Kim),박정훈(Junghoon Park),조해도(Haedo Cho),안범모(Bummo Ahn),나영진(Youngjin Na),김영진(Yeongjin Kim) 대한기계학회 2018 大韓機械學會論文集A Vol.42 No.10
최소 침습 수술(minimally invasive surgery, MIS)에서 수술 도구의 유연성과 조작 용이성은 매우 중요한 요소이다. 유연 수술 로봇은 유연한 동작이 가능하고 조작이 용이하여 기존 복강경 수술로봇 대비 향상된 수술결과를 기대할 수 있어 기존 수술로봇의 한계를 극복할 수 있는 진보된 수술로봇으로 주목을 받고 있다. 본 논문에서는 메소-스케일(meso-scale)의 최신 유연 수술 로봇을 소개하고, 유연 수술 로봇의 디자인 및 한계점을 분석하고자 한다. 연 조직(soft tissue)을 대상으로 개발된 다양한 최신의 유연수술 로봇들을 소개하고 유연 수술 로봇의 한계점을 극복하기 위한 영상 유도 기법, 관절의 강성 조절기법, 로봇의 재질 등에 대한 최신의 연구동향을 살펴본다. 현재 유연 수술 로봇의 기술적 한계점을 분석하고 향후 연구개발 방향을 제시한다. A soft surgical robot in a minimally invasive surgery offers flexibility and ease of operation. The robot can be used to easily access the lesion and perform surgical processes even in a narrow space within the abdominal cavity during surgery. This review paper introduces the latest meso-scale soft surgical robots and describes their design and limitations. This paper discusses various surgical robots used in various medical fields targeting soft tissues only. Image guidance techniques, stiffness modulation control of the soft joints, and materials of the robot body to overcome limitations of the existing soft surgical robots are a main focus of this review.