US 2026/0108708 A1Published application

Balloon catheter

AssigneeKaneka Corporation

InventorsKazuki Matsufuji, Masahiro Kojima, Takahisa Hamabuchi

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Abstract

A balloon catheter includes a shaft, first balloon, second balloon, first inflation tube, and second inflation tube. The first inflation tube has a lumen in communication with the lumens of the shaft and first balloon, and the second inflation tube has a lumen in communication with the lumens of the shaft and second balloon. The shaft has a first section on a distal side where the first and second inflation tubes are disposed, and a second section proximal to the first section where the first and second inflation tubes are disposed. At least two of the shaft, first inflation tube, and second inflation tube are fixed to each other in the first section. The shaft, first inflation tube, and second inflation tube are not fixed to each other in the second section. The balloon catheter is less likely to generate a kink when inserted into bent portions of blood vessels.

Claims7

Dependent claims

A balloon catheter comprising:

a shaft extending in a longitudinal direction from a proximal side to a distal side;
a first balloon and a second balloon each disposed at a distal part of the shaft;
and
a first inflation tube and a second inflation tube each disposed in a lumen of the shaft,
wherein:
the first inflation tube has a lumen in communication with the lumen of the shaft and a lumen of the first balloon,
the second inflation tube has a lumen in communication with the lumen of the shaft and a lumen of the second balloon,
the shaft has:
a first section which is present on a distal side and in which the first inflation tube and the second inflation tube are disposed, and
a second section which is present proximal to the first section and in which the first inflation tube and the second inflation tube are disposed,
at least two of the shaft, the first inflation tube, and the second inflation tube are fixed to each other in the first section, and
the shaft, the first inflation tube, and the second inflation tube are not fixed to each other in the second section.

9 more elements

Dependencies are inferred from the claim text.

Facts

Application: 19/424,631Filed 18 Dec 2025
Priority: JP 2023-10282422 Jun 2023
Published: 23 Apr 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification17 codes

A61M 25/1011
Balloon catheters: multiple balloon catheters
A61M 25/0021
Catheters; Hollow probes: characterised by the form of the tubing
A61M 25/0026
By the form of the lumen, e.g. cross-section, variable diameter: multi-lumen catheters with stationary elements
A61M 25/0032
Multi-lumen catheters with stationary elements: characterized by at least one unconventionally shaped lumen, e.g. polygons, ellipsoids, wedges or…