一种微相分离驱动的超分子组织粘合剂,具有即时的干湿粘合,酒精触发的解结和抗菌血静
Bowen Pang1, Weichang Li2, Jiaqin Li1
1South China Advanced Institute for Soft Matter Science and Technology, School of Emergent Soft Matter, South China University of Technology, Guangzhou, 510640, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|April 21, 2025
概括
一种新的基改性聚二甲基 (PDMS) 组织粘合剂提供了即时粘合和按需移除. 这种多功能材料具有抗菌和静血性质,可以改善外科手术和伤口护理.
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
- 手术创新 在外科创新.
背景情况:
- 开发先进的组织粘合剂对于有效控制出血至关重要.
- 目前的粘合剂往往缺乏快速粘合,容易去除和多种功能性质的组合.
研究的目的:
- 设计一种具有瞬间粘附,按需解,并集成抗菌和静血功能的多功能超分子组织粘合剂.
- 探索一种可逆微相分离机制,用于控制粘合性质.
主要方法:
- 对聚甲基 (PDMS) 的关尼修改,以创建一个超分子网络.
- 优化瓜尼离子含量以调整凝聚力的强度,附着性和可湿性.
- 在干燥和湿条件下对粘附的评估,使用医疗级酒精进行解,并评估抗微生物,生物相容性和血液相容性.
主要成果:
- 在干燥和湿条件下实现强大的瞬间粘附.
- 由于超分子性质,使用医疗等级的酒精进行了按需解锁.
- 具有显著的抗微生物特性,具有出色的生物相容性和血液相容性.
- 展示了水下注射能力和多功能,用于结合固体颗粒,例如用于药物输送.
结论:
- 开发的基改性PDMS粘合剂成功解决了组织粘合剂设计中的关键挑战.
- 微相分离机制能够精确控制粘合物特性,从而提高性能.
- 这种新型生物粘合剂为微创手术和改善伤口护理结果提供了有前途的进展.
相关概念视频
01:28Phases of Wound Repair
Following injury, the integrity of the injured tissues must be reestablished. For example, in skin tissue, wound repair involves coordination among resident skin cells, blood mononuclear cells, extracellular matrix, growth factors, and cytokines to complete the healing cascade.
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
Formation of Blood Clot
In case of deep injuries, trauma to blood vessels results in blood loss. In the meantime, phospholipids released from the ruptured endothelial cellular membrane are converted into arachidonic...
01:05Introduction to Hemostasis
Hemostasis is a complex physiological process that prevents excessive bleeding when a blood vessel is injured. It's crucial for maintaining the integrity of the circulatory system, as it ensures that our blood remains fluid while still within the vascular network and yet clots to prevent blood loss upon vessel injury.
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
The three phases of hemostasis involve many clotting factors present in plasma and several substances released by platelets and injured tissue cells. It is a fast, localized, and...
01:22Formation of the Platelet Plug
The platelet phase, the second stage of hemostasis, commences around 15-20 seconds after an injury. It follows and overlaps with the vascular phase, during which blood vessels constrict to minimize blood loss.
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...