The present invention relates to a suction device (22). The suction device (22) comprises an attachment portion (32) adapted to be attached to a wound cover member (18). The suction device (22) comprises a fluid inlet (28) which is at least partially circumscribed by the attachment portion (32). The suction device (22) also comprises a fluid outlet (30). The suction device (22) further comprising a connection portion (36) adapted to, at least during one operation condition of the suction device (22), provide a fluid communication between the fluid inlet (28) and the fluid outlet (30).The connection portion (36) comprises an inspection portion (38) that is transparent to thereby facilitate the positioning of the suction (22) device relative to the wound cover member (18).