相关实验视频
Updated: May 13, 2025

08:53
Artificial Lung Device Priming for In Situ Fiber Bundle Surface Grafting
Published on: March 28, 2025
233
抗凝固剂硫酸聚胺/聚乙硫) 膜屏障,用于有效的血液氧化
Lunhao Zhi1, Yu Bai1, Xueqin He2
1College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, People's Republic of China.
ACS nano
|April 16, 2025
概括
这项研究开发了一种用于体外膜氧化 (ECMO) 的新型膜,可以防止血液凝结和血泄漏. 增强的膜改善了严重心肺衰竭患者的气体交换.
科学领域:
- 生物材料科学 生物材料科学
- 聚合物化学 聚合物化学
- 医疗设备工程 医疗设备工程
背景情况:
- 体外膜氧化 (ECMO) 对于严重的心肺衰竭至关重要,但在膜血液凝固和血泄漏方面面临挑战.
- 目前的ECMO膜需要改善血液兼容性和液体屏障特性,以获得长期的疗效.
研究的目的:
- 为ECMO应用开发一种复合膜,具有增强的血抗泄漏和抗凝性质.
- 通过修改支层和界面聚合过程来提高氧化膜的性能.
主要方法:
- 在经过界面聚合的修改的聚硫 (PES) 基体上制造硫酸聚胺薄膜.
- 膜毛孔大小的表征,血抗泄漏能力 (使用人体血) 和抗凝剂 (使用激活的部分血栓形成时间 - aPTT).
- 修改 PES 支持以增强孔隙性,水友性和表面电荷,以改善质量转移和界面粘附.
主要成果:
- 硫酸聚胺膜的孔径为3.67 Å,有效地排斥了等离子体成分.
- 由于硫酸胺单体的结合,表现出显著的血抗泄漏性和显著的抗凝性 (aPTT延长>10秒).
- 修改后的PES支持显示有所改善的多孔性,水友性和正电荷,减少质量转移阻力和增强薄膜粘附性.
- 经ECMO模拟的测试证实,修改后的膜和支物提高了气体交换效率.
结论:
- 开发的复合膜为ECMO提供了同时的血抗泄漏和抗凝作用.
- 这种先进的膜技术有可能提高重症监护室血液氧化的安全性和效率.
- 该研究强调了接口聚合调制的有效性,并为下一代ECMO设备提供支持修改.
更多相关视频
相关概念视频
Oxygen Delivering System I: Nasal Cannula and Face Mask
174
The human body requires oxygen to function, and when the natural process of respiration is hindered, external devices, including the following, are needed to help deliver this vital gas.
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
Nasal Cannula
A nasal cannula is a lightweight tube split at one end into two prongs and placed in the nostrils. It is typically used to deliver low to medium levels of oxygen.
Suggested flow rate: The suggested flow rate for a nasal cannula typically ranges between 1 and 6 L/min.
Oxygen percentage setting:...
174
Oxygen Delivering System II: Venturi Mask and Transtracheal Oxygen
202
Oxygen therapy is a pivotal aspect of medical care, particularly for patients with respiratory ailments. Two prominent oxygen-delivering systems include the Venturi mask and the transtracheal oxygen catheter.
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
Venturi Mask
The Venturi mask, named after the Venturi effect, is designed to deliver precise oxygen concentrations. It consists of a large tube with an oxygen inlet that narrows down, causing a pressure drop that pulls air in through adjustable side ports. The mask is a lightweight,...
202

