8 chamber Pneumatic compression Lymphedema pumps are devices that help move fluid out of an area of the body that has excess fluid. The pump applies light pressure starting at the furthest point out of the body and gently squeezes towards the center of the body. This can be applied to any swollen area that is being treated. Using this 1-2 times per day can help with the long term management of swelling disorders. This helps with both vein and lymphatic disorders.