In one aspect, compositions and wound dressings are described herein. In some embodiments, a composition or wound dressing described herein comprises a mesh formed from a plurality of biodegradable polymer fibers; a first active agent dispersed in the biodegradable polymer fibers; a plurality of biodegradable polymer particles disposed in the mesh; and a second active agent dispersed in the biodegradable polymer particles. The particles can be disposed within the interiors of the fibers of the mesh or between the fibers of the mesh. In another aspect, a composition or wound dressing described herein comprises a first perforated mesh formed from a first plurality of biodegradable polymer fibers; and a second perforated mesh formed from a second plurality of biodegradable polymer fibers, wherein the second perforated mesh is disposed on the first perforated mesh in a stacked configuration and the first and second perforated meshes have different degrees of perforation.
一方面,本文描述了组合物和伤口敷料。在一些实施方案中,本文所述的组合物或伤口敷料包括由多种可
生物降解聚合物纤维形成的网状物;分散在可
生物降解聚合物纤维中的第一活性剂;分散在网状物中的多种可
生物降解聚合物颗粒;以及分散在可
生物降解聚合物颗粒中的第二活性剂。颗粒可以放置在网眼纤维的内部或网眼纤维之间。在另一方面,本文所述的组合物或伤口敷料包括由第一种多种可
生物降解聚合物纤维形成的第一穿孔网;以及由第二种多种可
生物降解聚合物纤维形成的第二穿孔网,其中第二穿孔网以堆叠配置的方式布置在第一穿孔网上,且第一和第二穿孔网具有不同的穿孔度。