A stent, composed of linear components, comes into close contact with a tissue in vivo through being deformed when set indwelling in vivo. The stent 1 has linear components which are deformed to exhibit a force for maintaining dilation when the stent is set indwelling in vivo, and the linear components deformed when the stent is set indwelling in vivo are composed of non-biodegradable metallic linear components 21, 22, 23, 24 and a plurality of biodegradable material-made linear components 3 which are bonded to the non-biodegradable metallic linear components 21, 22, 23, 24. Furthermore, when set indwelling in vivo, the stent 1 exhibits the force for maintaining the dilation owing to both the non-biodegradable metallic linear components 21, 22, 23, 24 and the biodegradable material-made linear components 3. After a predetermined period of time, biodegradation of the biodegradable material-made linear components 3 proceeds, which results in a lowering in the force for maintaining the dilation.
