Abstract: A stent delivery system, and associated manufacturing method, are such that the outer diameter of the distal portion of the stent delivery system is relatively small. The stent delivery system includes a hollow shaft portion, an inflatable balloon disposed on the outer periphery of a distal portion of the shaft portion, and a stent disposed on the outer periphery of the balloon and having struts expanded by inflation of the balloon. The balloon has a ridge portion with which the stent is engaged. The ridge portion is sandwiched in a space between the struts, and a top portion of the ridge portion has a concave portion recessed toward the axis of the shaft portion.

Abstract: A biodegradable stent that is degraded in a living body includes a stent body that is made of a biodegradable material and is deformed to have an expanded diameter in the living body; and a biodegradable drug-coating portion formed on the stent body. The drug-coating portion is degraded, in an expansion retention period during which an expansion retention force (radial force) of the deformed diameter-expanded stent body that acts on an inner wall of a lumen thereof is maintained, and before 60% of a degradation period from indwelling of the stent body in the living body to complete degradation thereof elapses.

Abstract: A stent is configured to facilitate directional proliferation of cells on the inner surface of the stent to relatively quickly coat the stent surface with the cells so that the onset of late stent thrombosis or restenosis can be reduced or prevented. The stent includes a cylindrical stent main body having openings at both ends and extending along the longitudinal direction between the openings at both ends. A coating layer is provided on the inner surface of the stent main body and contains a substance having a cell adhesion ability to promote the adhesion of cells. The coating layer is formed by arranging multiple linear coating parts, each extending linearly in a striped manner.

Abstract: A stent is configured to facilitate directional proliferation of cells on the inner surface of the stent to relatively quickly coat the stent surface with the cells so that the onset of late stent thrombosis or restenosis can be reduced or prevented. The stent includes a cylindrical stent main body having openings at both ends and extending along the longitudinal direction between the openings at both ends. A coating layer is provided on the inner surface of the stent main body and contains a substance having a cell adhesion ability to promote the adhesion of cells. The coating layer is formed by arranging multiple linear coating parts, each extending linearly in a striped manner.

Abstract: The invention has for its object the provision of an intravascular implant that has mechanical characteristics and physiological characteristics and is very low in cell cytotoxicity and provides an intravascular implant having an implant body made of a metal material that contains gadolinium and magnesium and is free of yttrium.

Abstract: It is intended to provide a stent having little or no risk of the breakage of a coating layer that is formed on the stent surface in the course of producing or transporting the stent or during the step of expanding the stent in clinical use. In other words, a stent to be implanted in a lumen in the living body wherein a layer including a physiologically active substance, a biodegradable polymer and a citric acid ester employed as a plasticizer is formed at least a part of the surface of the stent body.

Abstract: Disclosed herein is a medical implant including an implant body of which at least a part is comprised of a biodegradable metal, wherein the part comprised of the biodegradable metal has a crystal grain diameter of not more than 10 ?m.

Abstract: The invention has for its object the provision of an intravascular implant that has mechanical characteristics and physiological characteristics and is very low in cell cytotoxicity and provides an intravascular implant having an implant body made of a metal material that contains gadolinium and magnesium and is free of yttrium.

Abstract: Disclosed herein is a stent which is composed of a stent main body and a biologically/physiologically active substance stably supported thereon without the possibility of decomposition and degradation, the biologically/physiologically active substance releasing itself at a maximum rate within two periods of at least 10 days and 30-60 days after implanting at a lesion.