Contact-killing, QAC functionalized thermoplastic polyurethane for catheter applications
申请人:THE UNIVERSITY OF AKRON
公开号:US11155668B2
公开(公告)日:2021-10-26
In various embodiments, the present invention provides a functionalized thermoplastic polyurethane (TPU) containing bulk incorporated or surface-grafted quaternary ammonium compounds (QAC)s for contact-killing of a variety of microbes, where the QACs are on the surface of TPU to provide a sterile surface material that prevents bacteria commonly involved in device-associated infections (DAIs) from proliferating. The functionalized TPUs of the present invention can be formed into a wide variety of 3-dimensional shapes, such as catheters, medical tubing, laryngeal or tracheal stents, sutures, prosthetics, wound dressings, and/or a coating for medical devices and contains the residue of either a QAC containing diol monomer or an alkene functional diol monomer, which then allows the TPU to be functionalized with a QAC containing disulfide or free thiol compound, to form a quaternary ammonium functionalized thermoplastic polyurethane compound having antimicrobial properties for use in medical devices.
在各种实施例中,本发明提供了一种功能化热塑性聚氨酯(TPU),其中含有用于接触杀灭各种微生物的批量掺入或表面接枝的季铵化合物(QAC),其中 QAC 位于 TPU 表面,以提供一种无菌表面材料,防止常见于设备相关感染(DAI)的细菌增殖。本发明的功能化热塑性聚氨酯可制成各种三维形状,如导管、医用管道、喉或气管支架、缝合线、假肢、伤口敷料和/或医疗器械涂层,并含有含 QAC 的二元醇单体或烯功能二元醇单体的残留物、这样,热塑性聚氨酯就可以与含有二硫化物或游离硫醇化合物的 QAC 进行官能化,形成具有抗菌特性的季铵官能化热塑性聚氨酯化合物,用于医疗器械。