Catheter
AssigneeTerumo Kabushiki Kaisha
InventorsTakatomo Hisamatsu, Toshinobu Ishida
Life of this patent
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Abstract
A dilatation catheter has a tubular proximal shaft having relatively high rigidity, a tubular distal shaft having rigidity lower than that of the proximal shaft, a tubular intermediate section interposed between the proximal shaft and the distal shaft, a hub mounted on the proximal end portion of the proximal shaft, a balloon arranged on the distal end portion of the distal shaft so as to be in fluid communication with the distal shaft, and an inner shaft into which a guide wire can be inserted. The distal end portion of the proximal shaft can be inserted into the intermediate section to form an insertion portion having a spiral slit.
Claims16
A dilatation catheter, comprising:
- a tubular proximal shaft;
- a tubular distal shaft having rigidity lower than that of the proximal shaft;
- a tubular intermediate section interposed between the proximal shaft and the distal shaft for connecting liquid tightly these shafts;
- a hub mounted on a proximal end portion of the proximal shaft, to which a pressure applying apparatus can be attached;
- a balloon arranged on a distal end portion of the distal shaft so as to be in fluid communication, to which pressure can be applied from the hub;
- and
- a guide wire lumen having a distal aperture positioned on a distal end side to the distal end of the balloon and a proximal aperture positioned on a proximal end side to the proximal end of the balloon and on a distal end side to the proximal shaft,
- wherein a distal end portion of the proximal shaft is inserted into the intermediate section to form an insertion portion, the insertion portion having a spiral slit.
A catheter, comprising:
- a tubular proximal shaft;
- a tubular distal shaft having rigidity lower than that of the proximal shaft;
- a tubular intermediate section interposed between the proximal shaft and the distal shaft for connecting liquid tightly these shafts;
- a hub mounted on a proximal end portion of the proximal shaft;
- a treatment device arranged on a distal end portion of the distal shaft;
- and
- a guide wire lumen having a distal aperture positioned on a distal end side to the treatment device and a proximal aperture positioned on a proximal end side to the treatment device and on a distal end side to the proximal shaft,
- wherein a distal end portion of the proximal shaft is inserted into the intermediate section to form an insertion portion, the insertion portion having a spiral slit.
Dependencies are inferred from the claim text.