Abstract: A balloon catheter includes an outer shaft, an inner shaft, and an inflatable balloon. The inner shaft is inserted inside the outer shaft. A part of the inner shaft extends from a leading end of the outer shaft. The balloon includes a base end side joint portion joined to the outer shaft and a leading end side joint portion joined to the inner shaft. The inner shaft has an extension portion configured to in an axial line direction. The extension portion is provided further to a base end side than the leading end side joint portion.

Abstract: A catheter includes: an outer tube that includes a lumen; an inner tube that is inserted into the lumen and has a base end portion joined to an intermediate position of the outer tube in an axis direction; a core wire that is inserted into the lumen and extends to a tip end of the outer tube beyond the base end portion; and a securing portion that is disposed at an intermediate position of an overlapping range in the axis direction, the inner tube and the core wire overlapping each other in the overlapping range, and secures the inner tube or the core wire to the outer tube.

Abstract: A balloon catheter includes a balloon/shaft assembly and a linear member. The balloon/shaft assembly includes a catheter shaft extending from a proximal end to a distal end and a balloon connected to the catheter shaft. The linear member straddles an inflatable region of the balloon and is mounted on the balloon/shaft assembly. The linear member includes a hard portion and a flexible portion. The hard portion includes at least an outer portion disposed on an opposite side to an inner portion facing the inflatable region, of a portion disposed along an outer peripheral surface of the inflatable region in an inflated state. The flexible portion is a portion other than the hard portion. The flexible portion is extendable and has a lower hardness than the hard portion.

Abstract: A balloon catheter includes an outer shaft, an inner shaft, and an inflatable balloon. The inner shaft is inserted inside the outer shaft. A part of the inner shaft extends from a leading end of the outer shaft. The balloon includes a base end side joint portion joined to the outer shaft and a leading end side joint portion joined to the inner shaft. The inner shaft has an extension portion configured to in an axial line direction. The extension portion is provided further to a base end side than the leading end side joint portion.

Abstract: A balloon catheter includes a balloon/shaft assembly and a linear member. The balloon/shaft assembly includes a catheter shaft extending from a proximal end to a distal end and a balloon connected to the catheter shaft. The linear member straddles an inflatable region of the balloon and is mounted on the balloon/shaft assembly. The linear member includes a hard portion and a flexible portion. The hard portion includes at least an outer portion disposed on an opposite side to an inner portion facing the inflatable region, of a portion disposed along an outer peripheral surface of the inflatable region in an inflated state. The flexible portion is a portion other than the hard portion. The flexible portion is extendable and has a lower hardness than the hard portion.

Abstract: A balloon catheter includes an outer shaft, an inner shaft, and an inflatable balloon. The inner shaft is inserted inside the outer shaft. A part of the inner shaft extends beyond a leading end of the outer shaft. The inflatable balloon includes a base end side joint portion and a leading end side joint portion, the base end side joint portion is joined to the outer shaft and the leading end side joint portion is joined to the inner shaft. The inner shaft has an extension portion configured to extend in an axial line direction. The extension portion is located closer to the base end side of the outer shaft than to the leading end side joint portion of the inflatable balloon.

Abstract: A balloon catheter includes a catheter shaft, a balloon, a linear member, and a pressing member. The catheter shaft extends in an extension direction from a proximal end toward a distal end. The balloon is provided on the catheter shaft and inflatable in a radially outward direction centered on the catheter shaft. The linear member disposed on at least a portion of an outer circumferential surface of the balloon and extending in the extension direction. The pressing member presses the linear member against the balloon.

Abstract: A balloon catheter includes a balloon/shaft assembly and a linear member. The balloon/shaft assembly includes a catheter shaft extending from a proximal end to a distal end and a balloon connected to the catheter shaft. The linear member straddles an inflatable region of the balloon and is mounted on the balloon/shaft assembly. The linear member includes a hard portion and a flexible portion. The hard portion includes at least an outer portion disposed on an opposite side to an inner portion facing the inflatable region, of a portion disposed along an outer peripheral surface of the inflatable region in an inflated state. The flexible portion is a portion other than the hard portion. The flexible portion is extendable and has a lower hardness than the hard portion.

Abstract: A balloon catheter includes an outer shaft, an inner shaft, and an inflatable balloon. The inner shaft is inserted inside the outer shaft. A part of the inner shaft extends from a leading end of the outer shaft. The balloon includes a base end side joint portion joined to the outer shaft and a leading end side joint portion joined to the inner shaft. The inner shaft has an extension portion configured to in an axial line direction. The extension portion is provided further to a base end side than the leading end side joint portion.

Abstract: A guide wire port is formed in a midway position, in an axial line direction, of an outer shaft. A core wire extending across the guide wire port is provided in an outer tube hole of the outer shaft. The core wire has a leading end side area positioned further to a leading end side than the guide wire port and a tapered area provided on a base end side of the leading end side area. The tapered area has a first tapered area including a same position as the guide wire port in the axial line direction and a second tapered area provided continuously from a base end side of the first tapered area. A rate of increase of a transverse cross-sectional area from the leading end side toward the base end side is larger in the first tapered area than in the second tapered area.