Medical guidewire
AssigneeAsahi Intecc Co., Ltd.
InventorsNaohiko Miyata, Satoshi Nagano, Makoto Nishigishi
Life of this patent
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Abstract
Provided is a guidewire including a core shaft, an outer flexible tube, and an inner flexible tube that surrounds a distal end portion of the core shaft. The inner flexible tube is disposed in the outer flexible tube so that a distal end thereof is positioned between the distal end of the core shaft and a proximal end of the core shaft so as to be separated from the core shaft. A first joint is formed so as to join the distal end of the inner flexible tube to the core shaft. At least one second joint is formed so as to join the outer flexible tube to the inner flexible tube. The at least one second joint is positioned between the first joint and the proximal end of the core shaft.
Claims14
A medical guidewire comprising:
- a core shaft including a distal end portion having a small diameter;
- an outer flexible tube that surrounds an outer surface of the core shaft;
- and
- an inner flexible tube disposed in the outer flexible tube, the inner flexible tube surrounding the distal end portion of the core shaft,
- wherein a distal end of the core shaft is joined to a distal end of the outer flexible tube,
- wherein the inner flexible tube is disposed so that a distal end thereof is positioned between the distal end of the core shaft and a proximal end of the core shaft so as to be separated from the distal end of the core shaft, and
- wherein a first joint is formed so as to join the distal end of the inner flexible tube to the core shaft without jointing the outer flexible tube so as to be separated from the outer flexible tube, and at least one second joint is formed so as to join the outer flexible tube to the inner flexible tube without jointing the core shaft, the at least one second joint being positioned between the first joint and the proximal end of the inner flexible tube.
A medical guidewire comprising:
- a core shaft including a distal end portion having a small diameter;
- an outer flexible tube that surrounds an outer surface of the core shaft;
- and
- an inner flexible tube disposed in the outer flexible tube, the inner flexible tube surrounding the distal end portion of the core shaft,
- wherein a distal end of the core shaft is joined to a distal end of the outer flexible tube,
- wherein the inner flexible tube is disposed so that a distal end thereof is positioned between the distal end of the core shaft and a proximal end of the core shaft so as to be separated from the distal end of the core shaft, and
- wherein a first joint is formed so as to join the distal end of the inner flexible tube to the core shaft without jointing the outer flexible tube, at least one second joint is formed so as to join the outer flexible tube to the inner flexible tube without jointing the core shaft, and a third joint is formed so as to join the proximal end of the inner flexible tube to the core shaft without jointing the outer flexible tube, the at least one second joint being positioned between the first joint and the third joint.
Dependencies are inferred from the claim text.