用纤维增强的zwitterionic弹性体复合材料用于人工心脏门
Yifeng Chen1,2, Qijun Wu3, Wenzhong Cao1
1MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310058, P. R. China. zhangp7@zju.edu.cn.
Journal of materials chemistry. B
|June 4, 2025
概括
一种新的纤维增强的zwitterionic弹性体复合材料通过提供防表面和强大的机械性能,减少血栓和炎症等并发症,提供改进的聚合物心脏门 (PHV).
科学领域:
- 生物材料科学 生物材料科学
- 心血管工程 心血管工程
- 聚合物化学 聚合物化学
背景情况:
- 膜心脏病 (VHD) 带来了重大的健康风险,推动了对改善假肢解决方案的需求.
- 目前的聚合物心脏门 (PHV) 面临着包括血栓形成,化和炎症在内的挑战.
- 现有的PHV防腐涂层往往缺乏稳定性和机械兼容性.
研究的目的:
- 为先进的聚合物心脏门开发一种新型的纤维增强的zwitterionic弹性体复合材料.
- 为了在PHV中实现有效的防性质和增强的机械强度.
- 创建一种模仿自然心脏门结构和功能的生物材料.
主要方法:
- 一个zwitterionic弹性体复合物的制造与表面生成.
- 在机械增强中加入直角对齐的电纤维.
- 对抗凝血剂,抗,机械完整性和in vivo生物相容性的评估.
主要成果:
- 该复合物表现出优异的抗凝固和抗的特性.
- 通过模仿天然的门小册子,实现了无otropic 机械性能.
- 该材料在60天的血清浸泡和1亿次疲劳周期中保持完整性.
- 在体内研究显示出显著的抗炎和抗化作用.
结论:
- 开发的增强纤维的zwitterionic弹性体复合物代表了聚合物心脏门的有希望的进步.
- 该材料解决了当前PHV的关键局限性,提供了更好的生物相容性和耐用性.
- 这些发现表明,通过增强假体门性能,可以降低与VHD相关的发病率和死亡率.
相关概念视频
01:26Heart Failure Drugs: Inotropic Agents
Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
01:16Heart Valves
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...