FIELD: medicine.SUBSTANCE: invention refers to medical equipment, namely to a catheter, particularly an indwelling catheter, preferentially for treating urinary bladder and/or prostate functional disorders and/or diseases, preferentially in a combination with a radiation therapy or thereafter in prostate carcinoma, and/or a drug therapy, and/or a physical therapy of prostate and/or urinary bladder. A catheter has a catheter tube and a distal connector of the catheter. Provided is a first urine drain extending from the distal connector of the catheter to at least one outlet within a proximal end of the catheter tube. Provided is a second drug delivery passage in treating the urinary bladder extending from the distal connector of the catheter to a filling urinary bladder cylinder within the proximal end of the catheter tube. The urinary bladder cylinder is configured enclosed by the urinary bladder after catheter insertion. The urinary bladder cylinder has a permeable drug delivery wall. Provided is a third drug delivery passage in treating the prostate extending from the distal connector of the catheter to a filling prostate cylinder within the proximal end of the catheter tube. When filled, the prostate cylinder is enclosed by the prostate. The prostate cylinder has a permeable drug delivery wall.EFFECT: invention enables to conduct the treatment during a preset period of time by continuous drug delivery ensured by the permeable cylinder in the treated segment； a wall permeability of the urinary bladder cylinder makes it possible to control a drug dose delivered per a unit of time accurately.10 cl, 3 dwgИзобретение относится к медицинской технике, а именно к катетеру, в частности постоянному катетеру, предпочтительно для лечения функциональных расстройств и/или заболеваний мочевого пузыря и/или простаты, предпочтительно в сочетании с проведением или после проведения радиотерапии при карциноме простаты и/или лекарственной терапии, и/или физиотерапии простаты и/или мо
