Balloon catheter and method for manufacturing balloon catheter
AssigneeTerumo Kabushiki Kaisha
InventorsHiroyuki KAYANUMA, Naoki KOINUMA
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Abstract
A balloon catheter includes a shaft and a balloon surrounding a distal portion of the shaft and including: a distal fused portion fixed to the shaft, and a distal tapered portion positioned proximal to the distal fused portion. The distal tapered portion includes a first portion and a second portion that is positioned distal to the first portion, the first portion has a first wing curved in a circumferential direction of the shaft when the balloon is deflated, and the second portion does not have any wing.
Claims20
A balloon catheter comprising:
- a shaft;
- and
- a balloon surrounding a distal portion of the shaft and including:
- a distal fused portion fixed to the shaft, and
- a distal tapered portion positioned proximal to the distal fused portion, wherein
- the distal tapered portion includes a first portion and a second portion that is positioned distal to the first portion,
- the first portion has a first wing curved in a circumferential direction of the shaft when the balloon is deflated, and
- the second portion does not have any wing.
A balloon catheter comprising:
- a shaft;
- and
- a balloon made of a film, surrounding a distal portion of the shaft, and fixed to the shaft at distal and proximal ends of the balloon, wherein
- the balloon includes, at a location different from the distal and proximal ends:
- a first portion at which the film is folded in a circumferential direction of the shaft, and
- a second portion distal to the first portion and free of folds.
A method for manufacturing a balloon catheter, the method comprising:
- preparing a shaft and a balloon having a wing that is folded in a circumferential direction;
- arranging the balloon on a distal side of the shaft;
- applying heat to a distal side of the balloon to fuse a distal portion of the balloon to the shaft;
- and
- forming, by the heat applied to the distal side of the balloon, a portion proximal to the distal portion of the balloon and at which the wing no longer exists.
Dependencies are inferred from the claim text.