文献类型：期刊文献

英文题名：Comparative Finite Element Evaluation of Polymeric and Metallic Bioresorbable Sinus Stents Under Quasi-Static Radial Compression

作者：Fu, Wenyu[1,2];Yang, Aiping[1,2];Qiao, Aike[3,4]

第一作者：付文宇;Fu, Wenyu

通讯作者：Yang, AP[1];Yang, AP[2];Qiao, AK[3];Qiao, AK[4]

机构：[1]Beijing Union Univ, Coll Robot, Beijing 100027, Peoples R China;[2]Beijing Engn Res Ctr Smart Mech Innovat Design Ser, Beijing 100027, Peoples R China;[3]Beijing Univ Technol, Coll Chem & Life Sci, Beijing 100124, Peoples R China;[4]Beijing Int Sci & Technol Cooperat Base Intelligen, Beijing 100124, Peoples R China

第一机构：北京联合大学机器人学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Robot, Beijing 100027, Peoples R China;[2]corresponding author), Beijing Engn Res Ctr Smart Mech Innovat Design Ser, Beijing 100027, Peoples R China;[3]corresponding author), Beijing Univ Technol, Coll Chem & Life Sci, Beijing 100124, Peoples R China;[4]corresponding author), Beijing Int Sci & Technol Cooperat Base Intelligen, Beijing 100124, Peoples R China.|[1141739]北京联合大学机器人学院;[11417]北京联合大学;

年份：2026

卷号：17

期号：2

外文期刊名：JOURNAL OF FUNCTIONAL BIOMATERIALS

收录：;EI(收录号：20260920179448);WOS:【SCI-EXPANDED(收录号:WOS:001700450900001)】；

基金：This research was funded by National Natural Science Foundation of China (Grant No. 12572342) and Beijing Union University's Top 100 Talents Program (Grant No. BPHR2018CZ06).

语种：英文

外文关键词：biodegradable sinus stent; radial pressure; loading-unloading hysteresis; plastic deformation; finite element analysis

摘要：To address the issues of displacement and insufficient positional stability observed in the clinical use of the PROPEL Mini stent, this study investigates the influence of different biodegradable materials on the mechanical properties of the stent under the constraint of a fixed monofilament braided closed-loop geometry. Finite element analyses are conducted using Abaqus/Explicit to quantitatively evaluate the nonlinear mapping between nominal diameter, axial length, and radial pressure throughout a loading-unloading cycle. The results reveal that while axial behavior is consistent during compression, material-specific plasticity causes irreversible geometric sets in Mg alloy and PLGA models, whereas the PCL stent achieves total elastic recovery to its initial dimensions. During unloading, the Mg alloy stent recovers to a nominal diameter of 28 mm with a reduced axial length of approximately 22 mm, whereas the PLGA stent exhibits a much smaller recovery diameter of 14 mm with an axial length of approximately 23 mm. These post-release configurations directly determine the functional expansion range of the biodegradable stents after implantation. During unloading, the Mg alloy stent provides the highest radial pressure (peak 6.8 kPa) with a functional recovery range up to 26.5 mm, ensuring superior scaffolding stability. In contrast, while PCL achieves the widest recovery (52 mm), its radial pressure is clinically negligible (the maximum value is still less than 165 Pa), and the PLGA model exhibits both insufficient support and a restricted functional recovery limit (13 mm). By using high-strength materials such as Mg alloys, the radial anchoring force of the stent can be effectively enhanced without changing the existing structure, providing a scientific basis for solving clinical displacement problems.