Compression apparatus (10) for applying a cyclic to an appendage of the body for use in the prophylaxis of DVT compression, the compression apparatus (10) comprising: an inflatable bladder (24a, 24b, 24c) to wrap the least partially around the appendix a controller adapted for fluid connection to the chamber (24a, 24b, 24c) to inflate and deflate cyclically chamber (24a, 24b, 24c) for applying and removing selectively compressing the appendix hook material including a multiplicity of hooks one loop material including a multiplicity of loops (44) characterized in that the loop material has a first color and defining a coupling hook (100) colored, being engageable loops (44) by hooks material hook when the inflatable bladder (24) is at least partially wrapped around the appendage for use in securing the inflatable chamber (24) in the appendix, further comprising the loop material one another separate zone of the coupling zone hook (100), the loops (44) in another area a second color different from the first links (44) of the loop material having the first color adapted to break the connection and repeated disconnection of the hook material being with the loop material so that the first color coupling area hook becomes less distinct second color.Aparato de compresión (10) para aplicar una compresión cíclica a un apéndice del cuerpo para su uso en la profilaxis de la trombosis venosa profunda, comprendiendo el aparato de compresión (10): una cámara inflable (24a, 24b, 24c) para envolverla al menos parcialmente alrededor del apéndice un controlador adaptado para una conexión fluida a la cámara (24a, 24b, 24c) para inflar y desinflar cíclicamente la cámara (24a, 24b, 24c) para aplicar y retirar de manera selectiva la compresión del apéndice un material de gancho que incluye una multiplicidad de ganchos un material de lazo que incluye una multiplicidad de lazos (44) caracterizado por que el material de lazo tiene un primer color y define una zona de acoplamiento de gancho
