冠動脈の屈曲変形を模擬した屈曲負荷環境における冠動脈ステントの応力解析方法の構築

• 朱 暁冬

• 岩崎 清隆

• 新井 淳

• 大場 貴文

• 徳武 祐諭

• 梅津 光生

書誌事項

タイトル別名

• Construction on finite element analysis method of coronary stent in cyclical bending-load environment simulated bending motion of coronary artery

抄録

Aim:We aimed to construct a method of finite element analysis (FEA) on a coronary stent deployed in cyclically-bended artery.Method:A CoCr alloy stent was analyzed using ADINA8.9 in three steps: (1) crimp the stent onto a balloon, (2) deploy the stent in the artery model by balloon inflation, (3) bend the artery model in the angle range from 105 deg to 125 deg. Finally, the fatigue safety factor (FSF) was calculated by stress amplitude and mean stress.Result and Discussion:We found that the FSF is higher at the links and crowns connected to links at the bended region. The portion of stent fracture observed in the durability tests was coincident with the higher FSF region. Conclusion:We constructed the FEA method of the coronary stent in the successive processes of crimping onto the balloon, deploying and bending in the artery model.

収録刊行物

• 生体医工学

  生体医工学 52 (Supplement), O-106-O-107, 2014

  公益社団法人 日本生体医工学会

詳細情報

• CRID: 1390001205267617024
• NII論文ID: 130004695754
• DOI: 10.11239/jsmbe.52.o-106
• ISSN: 18814379
• ISSN: 1347443X
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可