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可注射的自我扩张/自动推进的水凝粘合剂,具有前凝活动和快速凝,用于致命大规模出血管理
Xin Zhao1, Ying Huang1, Zhenlong Li1
1State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
Advanced materials (Deerfield Beach, Fla.)
|November 16, 2023
概括
一种新型的可注射水凝通过扩张和粘附在伤口上,迅速阻止致命的出血. 这种自行驱动的生物粘合剂表现出卓越的止血和抗菌特性,为严重出血控制提供了一个有希望的解决方案.
科学领域:
- 生物材料科学 生物材料科学
- 血液静止研究 血液静止研究
- 伤口愈合技术 伤口愈合技术
背景情况:
- 控制致命和不可压缩的出血,特别是在战场受伤等关键情况下,存在重大挑战.
- 现有的静血剂往往缺乏快速部署,深入伤口透和有效粘附所需的特性.
研究的目的:
- 开发一种可注射,自扩张和自动推进的水凝生物粘合剂,具有促凝剂活性,用于快速有效地控制出血.
- 与商业血静止剂相比,评估新型水凝的血静止疗效,抗菌性质和生物相容性.
主要方法:
- 水凝是使用自发气泡和希夫基交叉连接来合成的,以实现快速凝和膨胀.
- 在各种动物模型中测试了静血效果,包括肝脏和大腿动脉出血,用抗凝剂大量出血以及难以进入的出血部位.
- 评估了抗菌活性对抗甲素耐药黄金色杆菌 (MRSA) 和前凝剂能力,以及细胞相容性和生物降解性.
主要成果:
- 水凝表现出快速凝,高自膨胀率,以及优秀的抗菌和抗氧化活性.
- 它表现出优越的血细胞和血小板粘附性,与抗击布和凝海绵相比.
- 优化的水凝 (OD-C/QGQL-A30) 在多种动物出血模型中显著超过商业血静止剂,包括严重的盆腔和主要动脉截断损伤.
- 水凝还加速了MRSA感染的皮肤伤口的愈合.
结论:
- 开发的可注射水凝是一种高度有效的止血剂,用于致命的大规模出血和腹部器官损伤.
- 它的自我扩张,自我推进和抗菌特性为创伤护理提供了重大进步.
- 这种创新型水凝代表了开发用于关键出血场景的先进静血装置的新范式.
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