Stent, method for manufacturing stent, and method for securing air flow by relieving stenosis of respiratory organ

A method for securing air flow by relieving stenosis of a respiratory organ using a stent for a respiratory organ, wherein:

• the stent comprises a bioabsorbable polyester copolymer,
• the bioabsorbable polyester copolymer is a polyester copolymer having residues of two kinds of ester bond forming monomers as main constituent units;
• and
• where the two kinds of ester bond forming monomers are referred to as monomer A and monomer B, respectively, an R value given by the following formula is 0.25 or larger and 0.99 or smaller:
• R
• =
• [
• AB
• ]
• /
• (
• 2
• [
• A
• ]
• [
• B
• ]
• )
• ×
• 1
• ⁢
• 0
• ⁢
• 0
• in which:
• [A] is a mole fraction (%) of monomer A residues in the polyester copolymer;
• [B] is a mole fraction (%) of monomer B residues in the polyester copolymer;
• and
• [AB] is a mole fraction (%) of structures (A-B and B-A) in which a monomer A residue and a monomer B residue are adjacent to each other in the polyester copolymer.