Patent ID: 6500204
Filing Date: 2002-12-31
Classification: A61F,A61L,D01F

Abstract:
A stent for a vessel used by being inserted into the vessel of a living body comprising:a main body portion of the stent formed into a tube by a yarn, which is formed of a biodegradable polymer, exhibiting a shape memory function wherein said yarn is contracted in diameter by an external force and enlarged in diameter when implanted in the vessel of the living body to its shape memorized size; and said main body portion of the stent being shape-memorized to a size that can be implanted in the vessel wherein said main body portion is formed by said yarn being wound to a tube as the yarn is bent in a zigzag design, wherein said main body portion is enlarged or contracted in diameter with bends of the yarn as displacing portions of yarn, and wherein said bends folded to a first angle contracting the main body portion in diameter and memorizing a second angle to be restored when inserted in a vessel of a living body.