Abstract: Method for making a flexible hose with in cross section one flat side, and a spiral coil of a profiled strip with upright distant edges engaging with each other in adjacent windings in which said profiled strip is wound on a mandrel of suitable cross section and a discrete filling element is inserted into each of the respective hollow internal spaces of the wall during the winding of the profiled strip on the mandrel; device for carrying out this method and a flexible hose obtained by this method with discrete filling elements in the respective hollow spaces.