US 12,268,829 B2
Balloon catheter
Masahiro Kojima, Settsu (JP); Yojiro Koga, Settsu (JP); Yoshinori Nakano, Settsu (JP); Masato Tsueda, Settsu (JP); and Shintaro Osumi, Settsu (JP)
Assigned to KANEKA CORPORATION, Osaka (JP)
Appl. No. 17/442,286
Filed by KANEKA CORPORATION, Osaka (JP)
PCT Filed Feb. 3, 2020, PCT No. PCT/JP2020/003893
§ 371(c)(1), (2) Date Sep. 23, 2021,
PCT Pub. No. WO2020/195170, PCT Pub. Date Oct. 1, 2020.
Claims priority of application No. 2019-063581 (JP), filed on Mar. 28, 2019.
Prior Publication US 2022/0152361 A1, May 19, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 25/10 (2013.01)
CPC A61M 25/1002 (2013.01) [A61M 2025/1004 (2013.01); A61M 2025/1081 (2013.01); A61M 2205/15 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A balloon catheter comprising:
a shaft extending in a distal-proximal direction;
a balloon disposed on a distal side of the shaft and having, in a contracted state, a plurality of wing-shaped portions;
projecting portions, each of which is disposed on a portion of an outer surface of the balloon, that is none of the plurality of wing-shaped portions;
a protective tube having a lumen in which the balloon is disposed, wherein none of the plurality of wing-shaped portions is present at a space having a shortest distance between an apex of each of the projecting portions and an inner surface of the protective tube;
a cross-sectional shape, of the lumen of the protective tube, perpendicular to the distal-proximal direction at the midpoint of the length in the distal-proximal direction of the protective tube is a polygon; and
the number of corners of the polygon is a multiple of the number of the projecting portions.