Medical equipment for High Frequency Chest Wall Oscillation treatment to be worn on a thorax, includes a plurality of pressure devices arranged to apply repetitive compressions to the thorax and each including a deformable chamber and at least a port communicating with the chamber configured to let a pressurized fluid flowing alternatively in and out the chamber so that the pressure device alternatively passes from an inflated configuration to a deflated configuration, the equipment including at least a frame for holding the pressure devices substantially perpendicular to the thorax, an outer face of the base being in contact with an inner face of the frame, wherein at least some of the pressure devices are aligned, two consecutive pressure devices being connected together by at least two tubes the distance (D) between the inner face of the frame and each tube connecting two consecutives pressure devices being inferior to 8 mm.