Sequential compression device, abbreviated SCD, is an improved type of intermittent pneumatic compression

Intermittent pneumatic compression

A therapeutic technique used in medical devices that include an air pump and inflatable auxiliary sleeves, gloves or boots in a system designed to improve venous circulation in the limbs of patients who suffer edema or the risk of deep vein thrombosis ....

 system that includes inflatable compression sleeves and a characteristic pressure modulation in order to reduce risk of clot formation, such as deep vein thrombosis

Deep vein thrombosis

Deep vein thrombosis is the formation of a blood clot in a deep vein. Deep vein thrombosis commonly affects the leg veins or the deep veins of the pelvis. Occasionally the veins of the arm are affected...

, in the legs of hospitalized patients. "SCD Express" is a registered trade mark used to promote the Kendall-Covidien brand of IPC medical products.