当前位置: X-MOL 学术J. Biomed. Mater. Res. Part B Appl. Biomater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
An innovative occluder for cardiac defect: 3D printing and a biocompatibility research based on self-developed bioabsorbable material-LA-GA-TMC.
Journal of Biomedical Materials Research Part B: Applied Biomaterials ( IF 3.2 ) Pub Date : 2020-01-21 , DOI: 10.1002/jbm.b.34550
Yiming Sun 1 , Yinghui Xia 2 , Xingjian Zhang 3 , Wenjing Li 1 , Quansheng Xing 2
Affiliation  

This study adopted the latest self‐developed bioabsorbable material lactide–glycolide–1,3‐trimethylene carbonate (LA–GA–TMC) and applied the three‐dimensional (3D) printing technique to manufacture the occluder for cardiac septal defects, so as to realize the individualized treatment of cardiac septal defects. At the same time, its biosafety was evaluated, with an aim to establish foundation for futural large‐scale animal experiment and clinical trial. The traditional “one‐pot synthesis” was modified, and the “two‐step synthesis method” was utilized to synthesize the LA–GA–TMC terpolymer at the lactide: glycolide: trimethylene carbonate ratio of 6:1:1.7. Afterward, the synthesized terpolymer was used as the raw material to fabricate the occluder model via using 3D printing technique. Then, its biocompatibility was comprehensively evaluated through cytocompatibility, blood compatibility, and histocompatibility. The occluder made from LA–GA–TMC 3D printing had favorable ductility and recoverability; besides, it possessed the temperature‐control feature, and the relative cell proliferation rates in extract liquids at various concentrations were all >70%, suggesting that it had favorable cytocompatibility. Moreover, hemolytic experiment revealed that its hemolytic rate was <5%, dynamic blood coagulation experiment demonstrated that the sample material moderately activated the blood coagulation, and the above findings suggested that it had good blood compatibility. In addition, implanting experiment in vivo revealed that its histocompatibility was superior to the traditional nitinol and the emerging poly‐l‐lactic acid. It is completely feasible to manufacture the cardiac septal defects occluder based on the novel absorbable material LA–GA–TMC, which has favorable biocompatibility, through 3D printing technique and it possesses broad prospects in large‐scale animal experiment and clinical trial.

中文翻译:

一种创新的心脏缺陷封堵器:基于自主研发的生物可吸收材料-LA-GA-TMC的3D打印和生物相容性研究。

本研究采用最新自主研发的生物可吸收材料丙交酯-乙交酯-1,3-三亚甲基碳酸酯(LA-GA-TMC)并应用三维(3D)打印技术制造心脏间隔缺损封堵器,从而实现心脏间隔缺损的个体化治疗。同时对其生物安全性进行评价,为今后的大规模动物实验和临床试验奠定基础。改进了传统的“一锅法合成”,采用“两步法”合成了LA-GA-TMC三元共聚物,丙交酯:乙交酯:碳酸三亚甲基酯的比例为6:1:1.7。然后,以合成的三元共聚物为原料,通过 3D 打印技术制造封堵器模型。然后,通过细胞相容性、血液相容性和组织相容性综合评价其生物相容性。由 LA-GA-TMC 3D 打印制成的封堵器具有良好的延展性和可恢复性;此外,它具有控温特性,在不同浓度提取液中的相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 血液相容性和组织相容性。由 LA-GA-TMC 3D 打印制成的封堵器具有良好的延展性和可恢复性;此外,它具有控温特性,在不同浓度提取液中的相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 血液相容性和组织相容性。由 LA-GA-TMC 3D 打印制成的封堵器具有良好的延展性和可恢复性;此外,它具有控温特性,在不同浓度提取液中的相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述发现表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 由 LA-GA-TMC 3D 打印制成的封堵器具有良好的延展性和可恢复性;此外,它具有控温特性,在不同浓度提取液中的相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 由 LA-GA-TMC 3D 打印制成的封堵器具有良好的延展性和可恢复性;此外,它具有控温特性,在不同浓度提取液中的相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 不同浓度提取液中相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 不同浓度提取液中相对细胞增殖率均>70%,表明其具有良好的细胞相容性。此外,溶血实验显示其溶血率<5%,动态凝血实验表明该样品材料适度激活凝血,上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 上述结果表明其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚 以上结果提示其具有良好的血液相容性。此外,体内植入实验表明,其组织相容性优于传统的镍钛诺和新兴的聚l-乳酸。基于具有良好生物相容性的新型可吸收材料LA-GA-TMC,通过3D打印技术制造心脏间隔缺损封堵器是完全可行的,在大规模动物实验和临床试验中具有广阔的前景。
更新日期:2020-01-21
down
wechat
bug