Guiding catheter

A guiding balloon catheter comprising:

• a shaft that includes a main lumen and a sub-lumen;
• a balloon that is attached to a distal end portion of the shaft and expands by supplying a fluid flowing through the sub-lumen to an inside of the balloon;
• a distal end tip that is connected to a distal end side of the shaft and includes a lumen communicating with the main lumen and opening at a distal end of the distal end tip;
• and
• a hub that is connected to a proximal end side of the shaft and includes ports communicating with the respective main lumen and sub-lumen, wherein
• the shaft comprises an inner layer that forms the main lumen, a first reinforcing layer formed on the inner layer, an intermediate layer that is formed on the first reinforcing layer and encloses the sub-lumen, a second reinforcing layer formed on the intermediate layer, and an outer layer formed on the second reinforcing layer from a proximal end of the shaft to a distal end of the shaft;
• both of the first reinforcing layer and the second reinforcing layer are braided layers formed of braided tubes that are continuous from the proximal end to the distal end of the shaft,
• the shaft has a side hole extending from the sub-lumen in a radial direction of the shaft and communicating with an inside of the balloon, and
• the second reinforcing layer extends more toward the distal end of the shaft than the side hole.