Abstract: The catheter for supplying fluids to or draining them from the body of a patient is provided in its tube wall with a detector device integrated in the form of a block unit. The detector device is constituted by a first sensor for sensing a first status, e.g. pressure, of the fluid, a second sensor for sensing a second status, e.g. temperature thereof, a first display device for displaying the first status sensed by the first sensor, and a second display device for displaying the second status sensed by the second sensor. The signals indicative of the first status, e.g. pressure, sensed by the first sensor are processed by a first control unit and displayed on the first display device and the signals indicative of the second status, e.g. temperature, sensed by the second sensor are processed by a second control unit and displayed on the second display device.