Robert F. Tumminaro - Elk Grove Village IL, US Christine A. Fredricks - Mount Prospect IL, US Frank K. Villari - Oak Park IL, US
Assignee:
Illinois Tool Works Inc. - Glenview IL
International Classification:
A61M 5/168 F16K 15/14
US Classification:
604247, 137843
Abstract:
A one-way check valve in an IV system set is provided with structural features to capture contaminant particles and inhibit the particles from adversely impacting the performance of the check valve. A screen can be provided upstream of the valve seat and the valve may be provided with flow channels for accumulating the particles. Modifications of the valve seat provide open volumes for accumulating contaminants.