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The study for Compliance Mismatch in the End-to-End Anastomosis of Coronary Artery and PTFE

관상동맥과 PTFE의 End-To-End 문합에서 컴플라이언스 부적합에 관한 연구

  • 심재준 (동아대학교 일반대학원 기계공학과) ;
  • 한근조 (동아대학교 공과대학 기계공학과) ;
  • 안성찬 (LG-OTIS 연구소)
  • Published : 2003.01.01

Abstract

Finite element analysis of end-to-end artery/PTFE anastomosis recently have been researched. But, these studies were carried out without the compensation for the error of finite element analysis and assumed the artery and PTFE as the simple cylindrical shape in spite of being the fatty tissue which covers the heart. Therefore, we performed the convergency study with respect to increasing the element numbers and considered the fatty tissue as the elastic foundation in the finite element analysis. The results are as fallow : 1. An anastomosis with the thinner thickness and larger diameter PTFE than artery could reduce the compliance disagreement. 2. A fatty tissue was affected to reduce the compliance mismatch in the vicinity of anastomosis of different material. Therefore a hypercompliant zone become narrorw and a compliance discrepancy decrease between the artery and the PTFE about 70%. And radial displacement with respect to longitudinal direction of an artery and the PTFE anastomosis was similar to a sectional compliance.

Keywords

Anastomosis;Compliance;Elastic Foundation;coronary Artery;Fatty Tissue

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