A process of preparing an adhesive haemostatic product is provided. The process comprises: (a) coating a porous solid substrate with a coating liquid that comprises an electrophilically activated polyoxazoline (EL-POX) and a solvent to produce a coated substrate; and (b) removing the solvent from the coated substrate. The EL-POX comprises at least 2 reactive electrophilic groups. The process enables the application of an EL-POX coating that leaves the pore structure of the substrate largely intact so that the ability of the porous substrate to absorb body fluids, such as blood, remains essentially unaffected. The EL-POX coated haemostatic product obtained by the present process has excellent adhesive properties due to the presence of electrophilic reactive groups that are capable of reacting with e.g. amine groups that are naturally present in tissue, under the formation of covalent bonds.
提供了一种制备粘合止血产品的工艺。该工艺包括:(a) 在多孔固体基底上涂覆由亲电活化聚
噁唑啉(EL-POX)和溶剂组成的涂覆液,以制备涂覆基底;(b) 从涂覆基底上去除溶剂。EL-POX 包含至少两个活性亲电基团。该工艺使 EL-POX 涂层能使基质的孔隙结构基本保持完好,从而使多孔基质吸收血液等体液的能力基本不受影响。由于亲电活性基团能够与组织中天然存在的胺基团等发生反应,形成共价键,因此通过本工艺获得的 EL-POX 涂层止血产品具有优异的粘合性能。