1. Device for visualizing anatomy, containing an elongated fiber with a proximal end, a distal end and an expanding part, made with the possibility of introducing into the region of the patient’s body surrounded by one or more tissue walls, and the expanding part is made with the possibility of radial expansion towards one or more tissue walls, and with the possibility of visualization after expansion towards the specified one or more fabric walls. 2. The device according to claim 1, characterized in that it provides visualization of the body area in real time. The device according to claim 1, characterized in that it is configured to provide information selected from the group including information about the geometry of the vessel, such as information about the diameter, curvilinear shape and other geometric parameters of the vessel, useful in angioplasty, during stenting, atherectomy and other diagnostic or therapeutic vascular procedures； information about the fistula and the intended location of the fistula, such as information about the preferred location of the created fistula and / or needle or other probe that needs to be moved from the first vessel to the second vessel, for example, to create a fistula during the TIPS procedure or cardiopulmonary bypass procedure. 4 . The device according to claim 1, characterized in that it contains a visualization device designed to visualize the expanded part and selected from the group including a fluoroscope or other x-ray visualization device； ultrasound imaging device； computed tomograph； magnetic resonance imaging device (MRI)； positronn1. Устройство для визуализации анатомии, содержащее удлиненное волокно с проксимальным концом, дистальным концом и расширяющейся частью, выполненной с возможностью введения в область тела пациента, окруженную одной или более тканевыми стенками, причем расширяющаяся часть выполнена с возможностью радиального расширения по направлении к указанной одной или более тканевым стенкам, и с в
