公开(公告)号：WO2021219860A2

公开(公告)日：2021-11-04

申请号：PCT/EP2021/061433

申请日：2021-04-30

申请人： CILAG GMBH INTERNATIONAL ,  ETHICON LLC

发明人： ICE, Luke ,  DWYER, Clifford ,  HOPSON, Peyton ,  CHRISTOPHER, Stephen ,  HANSEN, Jonathan ,  EICHENBAUM, Gary

IPC分类号： A41D13/11 ,  A62B23/02 ,  B01D39/16 ,  B01D39/18 ,  A41D13/1138 ,  A41D13/1192 ,  A62B23/025 ,  B01D2239/0442 ,  B01D2239/065 ,  B01D2239/0681 ,  B01D39/1692

摘要： A removable filtration system for use in a respiratory mask device has a filter media having a three-dimensionally contoured form to fit over the face of a wearer; and a filter support joined to the filter media along at least a portion of either or both of the periphery, anterior, or posterior of the filter media and wherein the filter support is configured to securely engage the removable filtration system to a feature of an outer covering of the respiratory mask device. Additionally or alternatively, a respiratory filter media has multiple layers each having has at least one property selected from a cationic property, reduced pore size, pores with increased tortuosity, an antibacterial property, and an antiviral property.