Idea of Dialysis Icon
This looks like a square with a drop of blood in the center. There are three lines above the drop of blood, each one slightly slanted. A longer line is separating the blood from the liens.
This Dialysis icon is made in Material Design style
developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 6,100 icons, all in the same style and quality.