Abstract: The present invention relates to an implant for implanting in a body, in particular in a hollow organ or a vessel of a body, the implant being composed of a filament which comprises at least one polymeric matrix material in which a magnetically heatable filler is arranged, the filament having a cross section with a core-sheath structure characterized in that the core forms a polymeric reinforcing structure, and in that the sheath comprises the polymeric matrix material in which the magnetically heatable filler is disposed, the loading of the filler being greater in the sheath than in the core.

Abstract: The invention relates to a method for producing a multicomponent fiber, wherein the fiber is formed from a plurality of filaments, where the filaments each have a core and a thermoplastic sheath, and where the sheath is generated during the production of the filaments by in situ polymerization of monomers or oligomers of the thermoplastic on the surface of the core, and also to multicomponent fibers produced accordingly and to organosheets produced therefrom.