Abstract: Catheter for medical use is provided with a main tube having a distal end and a proximal end, and a mechanism for connection to an external apparatus. To assist in the manipulation of the catheter maneuvering means are provided at the proximal end which allow rotary control of at least the main tube in contact with the connection mechanism.

Abstract: A measuring device 2, containing a light source and a spectrometric analyzer, is connected by an optic fiber cable 3 to a replaceable probe 1 of small diameter, capable of being used even when the cervix uteri is "closed".

Abstract: Coronary perfusion apparatus in which a catheter is held in place in the coronary artery by an intra-aortic balloon. The catheter carries a pressure sensor which is positioned adjacent the heart valves. The pump supplies oxygenation blood to the catheter at a predetermined time in the cardiac cycle which exists downstream of the occlusion through openings in the catheter under the control of a synchronizing means which determines the time of perfusion in response to cardiac signals and to signals corresponding to the measurement mode by the pressure sensor.

Abstract: A collimator for tomoscintigraphy comprising several juxtaposed sets of adjacent parallel tubes each positioned for each receiving transverse radiation at a different incidence angle from an individual organ under observation, thereby permitting with each step of rotation of a gamma camera, selective registration of information corresponding to as many images as there are sets in the collimator.

Abstract: Elementary detectors constituted by juxtaposed crystals are scanned by two groups of photomultipliers: photomultipliers of energy each scanning an elementary detector and photomultipliers of rank each one scanning a crystal of predetermined rank in each of the elementary detectors. All the photomultipliers are connected to the primary computer.

Abstract: A first balloon 11 plugs the aorta 1 during the diastole, upstream of the supraaortic arteries 2, 3. A second balloon 12 insures a propulsion of blood toward the coronaries 6,7. A pump 8 commands the inflation and deflation of the balloons from signals from an ECG and a pressure sensor 13 placed opposite the coronaries 6,7.

Abstract: Orientable endovascular sound for the exploration of the arteries. Between the head and the body, the sound has a zone of articulation, in which there are bellows which can be inflated by a fluid to produce the orientation of the head in a radial direction opposite the inflated bellows.