The subject matter of the invention is a medical device for assisting self-catheterization and instillation of drug-solutions into the bladder in female patients, consisting of switchable light force (6), of power supply (7), of mirror (8) and/or of one or more cameras (13). The device can be fixed on the dosing syringe (1) itself and beside or instead of the mirror (8) is consisting also of one or more cameras (13). The catheter (2) and the urine drainage bag (13) is connected through a three-way tap (9). A holder element (12) is fixed on the grip element (11). On or in the holder element (12) a micro switch (5), a light source (6), power supply (7) can be found. Further on a mirror (8) or a camera (13) is fixed expediently to the holder element (12) by a fixation element (15).
