A pressure cuff or garment (10) for prophylactic treatment of deep vein thrombosis includes a series of three chambers (24-28) arranged in series and coupled fluidically to one another by bleed tubes or chokes (32,34). The chambers (24-28) are of curved shape so as to overlap one another. The cuff or garment (24-28) provides more effective pulsating pressure treatment than prior art structures.
