Expansion catheter
First Claim
1. A dilatation catheter comprising a plurality of tubular members and an expandable body, wherein a cutting blade structure is installed on the tubular members in the vicinity of the expandable body.
2 Assignments
0 Petitions
Accused Products
Abstract
By installing a cutting blade structure onto the tubular members in the vicinity of the expandable body, the expandable body section can be made fine and flexible, and a dilatation catheter of excellent operability can be obtained, particularly in terms of its capacity to be advanced through constricted affected regions or curved affected regions. Moreover, it is also possible freely to control the expandability characteristics (compliance) of the expandable body. Furthermore, by providing protecting members which protect the blade section of the cutting blade, it is possible to increase the protection of the cutting blade, thereby providing a dilatation catheter which has both excellent safety characteristics and improved flexibility in the region of the expandable body.
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Citations
30 Claims
- 1. A dilatation catheter comprising a plurality of tubular members and an expandable body, wherein a cutting blade structure is installed on the tubular members in the vicinity of the expandable body.
- 14. A dilatation catheter comprising a plurality of tubular members, an expandable body, and a cutting blade disposed in the vicinity of the expandable body, wherein the dilatation catheter further comprises protecting members for protecting the blade portion of the cutting blade.
- 22. A dilatation catheter comprising a plurality of tubular members and an expandable body, wherein the dilatation catheter has a structure in which the opposite ends of the expandable body are fixed to the tubular members in the vicinity of the distal end of the catheter, a cutting blade structure constituted by a cutting blade and supporting sections for supporting the cutting blades is attached to the tubular members in the vicinity of the expandable body by means of the supporting sections, and at least a part of the supporting sections is made from a metallic material.
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29. A dilatation catheter comprising a plurality of tubular members and an expandable body, wherein the dilatation catheter has a structure in which the opposite ends of an expandable body are fixed to the tubular members in the vicinity of the distal end of the catheter, a cutting blade structure constituted by a cutting blade and supporting sections for supporting the cutting blade is attached to the tubular members in the vicinity of the expandable body, by means of the supporting sections, and the difference between the height of the supporting sections adjacent to the cutting blade, in a perpendicular direction to the axis of the catheter, and the height of the cutting blade in a perpendicular direction to the axis of the catheter, is 0.15 mm or less.
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30. A dilatation catheter comprising a plurality of tubular members and an expandable body, wherein the dilatation catheter has a structure in which the opposite ends of the expandable body are fixed to the tubular member in the vicinity of the distal end of the catheter, a cutting blade structure constituted by a cutting blade and supporting sections for supporting the cutting blade is attached to the tubular members in the vicinity of the expandable body, by means of the supporting sections, and the maximum value of the height of the cutting blade structure in the perpendicular direction to the axis of the catheter is 0.50 mm or less.
Specification