Interwoven is partnering with TKDG and Nuwellis to create a wearable solution to aid patients while undergoing Aquapheresis therapy. For patients suffering from Congestive Heart Failure (CHF), fluid overload is a dangerous condition. If your heart is weakened by heart failure, your kidneys may not get enough blood to work as well as they should. As a result, your body retains salt and water in a misguided attempt to boost your blood volume. Aquapheresis therapy uses ultrafiltration to remove the excess fluid.