BALLOON CATHETER WITH DILATING ELEMENTS
First Claim
Patent Images
1. A balloon catheter for dilation of a vessel wall, comprising:
- a shaft having a distal end and a proximal end;
a balloon mounted on the distal end of the shaft, the balloon having a distal portion, a proximal portion, wherein at least a length of an outer surface of the balloon comprises a working diameter adapted to dilate the vessel wall, the shaft having an inflation lumen extending therethrough in fluid communication with an interior region of the balloon, the balloon thereby being expandable between a deflated state and an inflated state; and
a plurality of separate dilation elements each comprising a coil and a single dilation wire, the dilation wire having a proximal end and a distal end, one of the proximal and the distal ends of the dilation wire affixed to the coil at a joint where a diameter of the one of the proximal and the distal ends extends a predetermined distance into the coil, the coil extending in a first direction from at least the working diameter of the balloon to the shaft.
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Abstract
A balloon catheter is provided that may be used to dilate hardened regions of a stenosis. The balloon catheter is provided with dilation elements that extend along a surface of a balloon. The dilation elements may comprise a coil and dilation wire. The coil and wire may be configured in various ways such that inflation of the balloon creates a concentration of forces along the dilating wires which are thereafter transmitted to stenosed regions of a vessel wall. The force exerted by the dilation elements against the stenosed region is sufficient to fracture plaque from the vessel wall.
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Citations
20 Claims
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1. A balloon catheter for dilation of a vessel wall, comprising:
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a shaft having a distal end and a proximal end; a balloon mounted on the distal end of the shaft, the balloon having a distal portion, a proximal portion, wherein at least a length of an outer surface of the balloon comprises a working diameter adapted to dilate the vessel wall, the shaft having an inflation lumen extending therethrough in fluid communication with an interior region of the balloon, the balloon thereby being expandable between a deflated state and an inflated state; and a plurality of separate dilation elements each comprising a coil and a single dilation wire, the dilation wire having a proximal end and a distal end, one of the proximal and the distal ends of the dilation wire affixed to the coil at a joint where a diameter of the one of the proximal and the distal ends extends a predetermined distance into the coil, the coil extending in a first direction from at least the working diameter of the balloon to the shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A balloon catheter for dilation of a vessel wall, comprising:
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a shaft having a distal end and a proximal end; a balloon mounted on the distal end of the shaft, the balloon having a distal portion, a proximal portion, wherein at least a length of an outer surface of the balloon comprises a working diameter adapted to dilate the vessel wall, the shaft having an inflation lumen extending therethrough in fluid communication with an interior region of the balloon, the balloon thereby being expandable between a deflated state and an inflated state; and a plurality of separate dilation elements each comprising a coil and a single dilation wire, the coil extending along an entire length of the balloon and each end of the coil being affixed to the shaft at opposite ends of the balloon, the wire being inserted and affixed within the coil, the wire extending only along the working length of the balloon.
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Specification