US 12,274,467 B2
Balloon catheter
Masahiro Kojima, Settsu (JP); Takahisa Hamabuchi, Osaka (JP); and Masato Tsueda, Settsu (JP)
Assigned to KANEKA CORPORATION, Osaka (JP)
Filed by KANEKA CORPORATION, Osaka (JP)
Filed on Jun. 16, 2022, as Appl. No. 17/841,916.
Application 17/841,916 is a continuation of application No. PCT/JP2020/046382, filed on Dec. 11, 2020.
Claims priority of application No. 2019-230874 (JP), filed on Dec. 20, 2019; and application No. 2019-230875 (JP), filed on Dec. 20, 2019.
Prior Publication US 2022/0304718 A1, Sep. 29, 2022
Int. Cl. A61B 17/3207 (2006.01); A61M 25/10 (2013.01); A61M 25/00 (2006.01)
CPC A61B 17/320725 (2013.01) [A61M 25/104 (2013.01); A61M 2025/0037 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A balloon catheter, comprising:
a shaft extending in a longitudinal direction from a distal side to a proximal side;
a balloon disposed on the distal side of the shaft;
an elongate body extending along the shaft in the longitudinal direction and having a body tissue contacting part at its distal end part; and
an elongate body lumen through which the elongate body can be passed, wherein
the elongate body and the elongate body lumen are configured so that the elongate body is engaged with an inner wall of the elongate body lumen to form a first engagement part and an axial rotation angle of the elongate body is 0° to 60° at the first engagement part,
the first engagement part is located at a distal portion of the elongate body lumen between a distal end of the elongate body lumen and a position 30 cm from the distal end of the elongate body lumen toward the proximal side,
the elongate body lumen is configured so that the elongate body is 360° rotatable around a rotation axial of the elongate body at a proximal end of the elongate body lumen, and
a cross-sectional shape of the elongate body lumen in a direction perpendicular to the longitudinal direction varies continuously along the longitudinal direction such that the axial rotation angle of the elongate body gradually decreases as it is approaching the first engagement part from the proximal end of the elongate body lumen.