Balloon catheter

A balloon catheter, comprising:

• a first shaft;
• an expansion lumen formed within the first shaft and supplied with liquid necessary to expand a balloon;
• a second shaft extended from a front end of the first shaft;
• a guide wire lumen formed within the second shaft and having a guide wire pass through the guide wire lumen;
• and
• the balloon having a front end attached to the second shaft and being expandable and having part of a rear end attached to the front end of the first shaft,
• wherein a pressure injection port is formed in the first shaft corresponding to a front of a portion to which the balloon has been attached and the liquid is injected into the balloon through the pressure injection port, and
• a wire discharge hole is formed in the second shaft corresponding to a rear of the portion to which the balloon has been attached and the guide wire is discharged through the wire discharge hole.

A balloon catheter, comprising:

• a first shaft in which an expansion lumen to which a fluid necessary to expand a balloon is supplied is formed;
• a second shaft extended from a front end of the first shaft and having a guide wire lumen through which a guide wire passes formed in the second shaft;
• and
• the balloon attached to the first shaft or the second shaft and being expandable.