公开(公告)号：US20200332908A1

公开(公告)日：2020-10-22

申请号：US16922891

申请日：2020-07-07

申请人： CareFusion 303, Inc.

发明人： Raymond FEITH ,  Siddarth K. SHEVGOOR ,  Eugene MASON ,  Mark KAPLAN

IPC分类号： F16K15/14 ,  B01D29/56 ,  B01D35/153 ,  B01D29/11

摘要： A check valve includes an upper housing having an inlet of the check valve, a lower housing axially coupled to the upper housing and having an outlet of the check valve, a valve portion cooperatively formed by the upper and lower housings, a passageway extending between the inlet and outlet, a first filter included in the upper housing to limit passage of undesirable matter in fluid flowing through the check valve, a second filter included in the lower housing to limit passage of undesirable matter in fluid flowing through the check valve, each of the first filter and the second filter including a plurality of vertical structures disposed in the valve portion and extending axially and radially in the valve portion, and a valve member positioned in the valve portion to selectively permit fluid to flow through the check valve.