JP2020199115A5

JP2020199115A5 -

Info

Publication number: JP2020199115A5
Application number: JP2019108781A
Authority: JP
Filing date: 2019-06-11
Publication date: 2022-05-20

Claims

With the first hollow shaft,
A tubular mesh member whose base end is joined to the tip of the first hollow shaft and is configured to expand or contract in the radial direction.
A core wire whose base end is located on the base end side of the base end of the first hollow shaft and extends toward the tip side inside the first hollow shaft and the mesh member.
A second hollow shaft whose base end is located between the tip and the base end of the mesh member and extends the inside of the mesh member toward the tip side.
A catheter comprising a tip portion of the mesh member, a tip portion of the core wire, and a tip tip having a joint portion for joining the second hollow shaft.

The first aspect of the present invention, wherein in the joint portion, the tip portion of the second hollow shaft, the tip portion of the core wire, and the tip portion of the mesh member are arranged in this order from the inner side to the outer side in the radial direction. catheter.

The catheter according to claim 1 or 2, wherein the tip of the core wire is formed with a recess or a through hole into which a part of the second hollow shaft enters.

The catheter according to any one of claims 1 to 3, wherein the position of the tip of the mesh member and the position of the tip of the core wire are deviated from each other in the long axis direction of the second hollow shaft.

The catheter according to claim 4, wherein the tip of the core wire is located on the tip side of the tip of the mesh member in the long axis direction of the second hollow shaft.

The catheter according to any one of claims 1 to 5, wherein the second hollow shaft is constrained to the core wire on the proximal end side of the joint.

Any of claims 1 to 6, wherein when the mesh member expands in diameter outward in the radial direction, the base end of the second hollow shaft is located inside a cylinder in which the tip end side shaft of the first hollow shaft is virtually extended. The catheter according to one item.