the present invention relates to an inner urethral device (permanent urethral device) (1, 10) comprising an elongated tubular member (2, 20) extending along a longitudinal geometric axis (l) from an end portion distal inlet (2a, 20a), via an intermediate portion (2b, 20b), to a proximal outlet end portion (2c, 20c), the tubular member defining a lumen (3, 30) extending along of the longitudinal geometric axis (l) between the distal inlet end portion (2a, 20a) and the proximal outlet end portion (2c, 20c), the distal end portion of the elongated tubular member (2, 20) comprising a plurality of urine inlet openings (4, 40), at least part of the distal end portion being preconfigured to be reversibly transformable between a linear state for passage through the urethra when inserted through it and a preconfigured curled state for reception anchored within the bladder in the position of use. the plurality of urine inlet openings (4, 40) are provided over the inner spiral section and urine inlet openings are absent over the outer spiral section. the present invention additionally relates to a device assembly comprising the internal urethral device (1, 10) adapted to be inserted coaxially into the lumen of the tubular member (2, 20). the present invention also relates to an intermittent urethral catheter (10) for use in draining urine from a bladder when the urethral catheter (10) in a use position is intermittently inserted into a patient.a presente invenção se refere a um dispositivo uretral interior (dispositivo uretral de permanência) (1, 10) compreendendo um membro tubular alongado (2, 20) se estendendo ao longo de um eixo geométrico longitudinal (l) a partir de uma porção de extremidade de entrada distal (2a, 20a), por intermédio de uma porção intermediária (2b, 20b), para uma porção de extremidade de saída proximal (2c, 20c), o membro tubular definindo um lúmen (3, 30) se estendendo ao longo do eixo geométrico longitudinal (l) entre a porção de extremidade de entrad
