An acoustic device with means for being secured in a human ear

An acoustic device (14) to be placed on a human ear and comprising a housing (16) configured to be placed in the outer ear, into the cavity of the shell, with a face (17) intended to rest on the drink, a face (18) adapted to abut the antitragus, a mouthpiece (22) intended to be inserted in the mouth of the auditory tract and a resilient means (23) to support on cartilage arch between the shell and antihelix¿ ¿ and configured for influencing the housing (16) with a force oriented generally forwards towards the tragus, wherein the resilient means (23) comprises an elongate element that distributes the force along the arc of cartilage in the shell and which it is mounted approximately tangentially relative to the face (18) of the housing (16) that is configured to maintain contact with the antitragus; characterized in that the resilient means is a leaf spring (23) having a stiffness which decreases with ladistancia the housing (16), so a uniform force towards the cartilage arch at the concha distribution is provided.