Device for wrapping outer wall of blood vessel

A porous, outer vascular wall-wrapping device, comprising a biocompatible polymer material,

• wherein the device is configured to be in an original shape or a temporary shape,
• wherein the original shape is a hollow cylindrical structure one side of which is cut in a lengthwise direction to allow a blood vessel to be inserted into a hollow space of the device, and the temporary shape is a curved or planar shape formed by application of an external stimulus,
• wherein opposite ends formed by the cutting are apart from each other in the temporary shape, and the device is recovered to the original shape as the device is bent in a curvature-increasing direction by gradually decreasing the external stimulus in a controlled manner, so as to wrap around an outer vascular wall,
• wherein the polymer material comprises x % PCL (poly-ε-caprolactone)-co-y % PGMA (poly-glycidyl methacrylate),
• wherein x % and y % each represent mol % for corresponding units, with x+y=100 under a condition of x being 92 to 96, and
• wherein the device has a mean pore diameter in a range of 300 μm to 500 μm, and a porosity in a range of 50% to 70% relative to a total area of the device.