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KMID : 0372919970180030253
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Journal of Biomedical Engineering Research
1997 Volume.18 No. 3 p.253 ~ p.259
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Finite Element Analysis of the Artery and PTFE End-To-Side Anastomosis with 45 Anastomotic angle
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Han Geun-Jo
Kim Hyeong-Tae
An Seong-Chan
Shin Jeong-Uk
Kim Yeong-Ho
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Abstract
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Von Mises stress and compliance distribution was evaluated using a finite element analysis on the anastomosis of an artery with length of 20mm(z direction, along the horizental artery), inner diameter of 4mm, thickness fo 0.5mm and a PTFE graft with length of 5.7mm, inner diameter of 2mm, thickness of 0.2mm when anastomotic angle was and inner pressure of 1330 dyne/mm2 was applied inside the 2 conduits. From the analysis results were obtained as follows. (1) Artery diameter increased in both horizontal x(along the length of artery) and vertical y(perpendicular to the length of artery)directions and the magnitude of that in x direction was bigger than that in y direction. (2) The compliance was maximum on the anastomosis, especially on that with acute angle. The reduction of compliance was observed from the anastomosis area to the either right or left end. (3) The equivalent stress was maximum on top in the y direction and minimum on the nodes apart in circumferential direction from the top. (4) The equivalent stress was maximum in t도 vicinity of anastomosis with acute angle along the longitudinal direction of the artery. This trend was also observed along the PTFE graft.
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KEYWORD
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End-to-side anastomosis, Graft, Compliance mismatch, Anastomotic angle
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