Device for treating mitral insufficiency and a method for producing the device. The device comprises a proximal stent section (222); a distal stent section (224); a central stent section (226) interconnecting said proximal stent section (222) and said distal stent section (226); and at least one biodegradable structure (228), disposed on the central stent section (226). Said proximal stent section (222) and said distal stent section (226) being radially expandable by deployment of said device. Moreover said biodegradable structure (228) is arranged to retain the central section (226) in a contracted shape for a predetermined period after deployment of the device.