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논문 기본 정보

자료유형
학술대회자료
저자정보
지대원 (트리플씨메디칼) 김철웅 (고려대학교)
저널정보
대한기계학회 대한기계학회 춘추학술대회 대한기계학회 2010년도 추계학술대회 강연 및 논문 초록집
발행연도
2010.11
수록면
4,101 - 4,107 (7page)

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Automated anastomosis using the Microvascular Anastomotic Coupler System (MAC) have lately increased by overcoming disadvantages of conventional suturing technique. In this study, we also developed a new automated anastomotic coupler system, AnaFix<SUP>ⓡ</SUP>, with improvement of the predicate device. We found that the micro-sized pins, which could lead to optimal end-to-end anastomoses, were critical in designing the ring-pin system of the AnaFix<SUP>ⓡ</SUP>. Materials for micro-sized pins can be chosen among 316 Stainless Steel, Ti-6Al-7Nb, Ti-6Al-4V ELI, and Unalloyed Titanium which are biocompatible and equivalent with those of the predicate device. The pinheads are usually shaped like arrows to prevent failures of anastomosis as vessels are manually inserted into the pins and can easily fall out. In this study, the most ideal materials and shapes for the micro pins were suggested using the Finite Element Analysis (FEA) based on the conditions mentioned above. In particular, we evaluated stress redistribution with the effect of fillets and further observed damaged hardness or portion of the pins. The detailed projects performed in the study were as follows. 1) Effect of variations in pinheads' shape and diameter. 2) Deformation behavior of micro-pins produced by four different materials, 316 Stainless Steel, Ti-6Al-7Nb, Ti-6Al-4V ELI and Unalloyed Titanium. 3) Evaluation of stress concentration behavior and maximum load from the effects of fillets with four different conditions. As a result, we found the optimal condition in order to effectively redistribute stress concentration, which occurred on the notch of the rings during anastomosis, and increase allowable load by 2.3 times.

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Abstract
1. 서론
2. AnaFix Micro-Pin의 유한요소해석
3. 마이크로핀의 필렛효과 및 길이비에 따른 von Mises stress의 변화
4. 결론
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UCI(KEPA) : I410-ECN-0101-2012-550-003944374