Catheter
First Claim
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1. 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.
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Accused Products
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.
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Citations
16 Claims
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1. A dilatation catheter, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A catheter, comprising:
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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. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification