CHFS - CHF Solutions +3% on submitting patent application for pediatric use of Aquadex Flex Flow April, 03 2019 09:01 AM Nuwellis CHF Solutions (NASDAQ:CHFS) submits a method of use application to the USPTO for pediatric use of its Aquadex Flex Flow System.More news on: CHF Solutions, Inc., Healthcare stocks news, Stocks on the move, Read more ...