Balloon catheter
First Claim
Patent Images
1. A balloon catheter comprising:
- a balloon;
a cylindrical outer shaft to which at least a part of the balloon is attached, the cylindrical outer shaft forming an inflation lumen through which fluid for inflating the balloon is supplied;
an opening control portion provided in the cylindrical outer shaft and having a control hole that communicates with the inflation lumen;
a core wire formed of an elongated wire disposed in the cylindrical outer shaft, the core wire;
i) being slideable along a longitudinal direction of the balloon catheter, and ii) including a pushing portion that is selectively engageable and disengageable with the control hole in the opening control portion;
an inner shaft that is disposed in the cylindrical outer shaft and in which a guidewire lumen for allowing a guidewire to be inserted therethrough is formed;
a front guidewire port formed at a distal end of the inner shaft; and
a rear guidewire port formed at a proximal end of the inner shaft, whereinthe rear guidewire port is formed in the opening control portion.
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Accused Products
Abstract
A balloon catheter includes a core wire and an opening control portion. The core wire is formed of a long wire disposed in an outer shaft and includes a pushing portion. The opening control portion is provided in the outer shaft and has a control hole that communicates with an inflation lumen. The opening area of the control hole in the opening control portion is partially closed when the pushing portion of the core wire comes into contact with the control hole.
15 Citations
9 Claims
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1. A balloon catheter comprising:
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a balloon; a cylindrical outer shaft to which at least a part of the balloon is attached, the cylindrical outer shaft forming an inflation lumen through which fluid for inflating the balloon is supplied; an opening control portion provided in the cylindrical outer shaft and having a control hole that communicates with the inflation lumen; a core wire formed of an elongated wire disposed in the cylindrical outer shaft, the core wire;
i) being slideable along a longitudinal direction of the balloon catheter, and ii) including a pushing portion that is selectively engageable and disengageable with the control hole in the opening control portion;an inner shaft that is disposed in the cylindrical outer shaft and in which a guidewire lumen for allowing a guidewire to be inserted therethrough is formed; a front guidewire port formed at a distal end of the inner shaft; and a rear guidewire port formed at a proximal end of the inner shaft, wherein the rear guidewire port is formed in the opening control portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A balloon catheter comprising:
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a balloon; a cylindrical outer shaft to which at least a part of the balloon is attached, the cylindrical outer shaft forming an inflation lumen through which fluid for inflating the balloon is supplied; an opening control portion provided in the cylindrical outer shaft and having a control hole that communicates with the inflation lumen; a core wire formed of an elongated wire disposed in the cylindrical outer shaft, the core wire;
i) being slideable along a longitudinal direction of the balloon catheter, and ii) including a pushing portion that is selectively engageable and disengageable with the control hole in the opening control portion;an inner shaft that is disposed in the cylindrical outer shaft and in which a guidewire lumen for allowing a guidewire to be inserted therethrough is formed; a front guidewireport formed at a distal end of the inner shaft; and a rear guidewire port formed at a proximal end of the inner shaft, wherein the rear guidewire port is formed in the opening control portion, and a maximum diameter of the pushing portion is larger than a maximum diameter of the control hole.
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Specification