To provide a means capable easily releasing twist of two or more guidewires passed through a guiding catheter without pulling out the guidewires. A twist releasing apparatus has a shaft, a first tube formed at the tip of the shaft and has a first lumen through which two or more guidewires can be passed, a second tube disposed through a gap at the tip side in the axis direction relative to the first tube and has a second lumen through the two or more guidewires can be passed, and a connection portion for connecting the first tube and the second tube so that the two or more guidewires can be passed through the first lumen and the second lumen. The second tube has a slit that is formed in an axis direction and can be elastically deformed. The connection portion can be elastically deformed into a curved shape in the axis direction.
