Indwelling catheter

An indwelling catheter,

• wherein:
• a maximum value of a catheter repulsive force in a dry state at 25° C. is in a range of 0.10 N or more;
• a maximum value of a catheter repulsive force when immersed in warm water at 37° C. is in a range of 0.01 to 0.03 N;
• a ratio of the maximum value of the catheter repulsive force in the dry state at 25° C. to the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is in a range of 7:1 or more;
• and
• the maximum value of the catheter repulsive force when immersed in warm water at 37° C. is in a range of 0.018 N or less after 5 minutes from indwelling;
• wherein the indwelling catheter contains a polyurethane resin;
• the polyurethane resin contains a diisocyanate, a diol chain extending agent, and a polyglycol;
• a weight ratio of the diisocyanate to the polyglycol is in a range of 0.99:1 to 1.36:1;
• and
• the polyurethane resin contains a hard segment, wherein an average chain length of the hard segment is in a range of 1.00 to 1.80.