The invention relates to a device for preventing incontinence, having a tube-shaped body (3 129 203) comprising a first longitudinal guide element (7 143 207) in the interior thereof. A hose-like retaining element connects to the tube-shaped body (3), comprising a second longitudinal guide element (13 113 213) in the interior thereof. Said second guide element (13 113 213) opens in the axial direction into a termination on the side thereof opposite the tube-shaped body (3). The hose-like retaining element is implemented as a reversible stretchable and collapsible metal mesh (23) comprising a polymer coating (25).