Systems and methods for treating a vessel using focused force
First Claim
Patent Images
1. A device for introduction into a vessel, comprising:
- a main elongated element having a main elongated element proximal end and a main elongated element distal end;
a balloon positioned at the main elongated element distal end, the balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough;
a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use;
a longitudinally movable sheath positioned external to the main elongated element, the longitudinally movable sheath having a distal end and a proximal end; and
a core wire unslidingly attached to the main elongated element at a core wire attachment point, the core wire including an internal core wire portion positioned within the main elongated element and an external core wire portion positioned distally with respect to the internal core wire portion, the external core wire portion external to and running alongside the balloon,wherein a position of the sheath distal end with respect to the balloon defines an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.
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Abstract
A device for introduction into a body vessel includes a main elongated element, a balloon positioned at the main elongated element distal end, a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use, and a longitudinally movable sheath positioned external to the main elongated element, a position of the sheath distal end with respect to the balloon defining an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen.
16 Citations
31 Claims
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1. A device for introduction into a vessel, comprising:
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a main elongated element having a main elongated element proximal end and a main elongated element distal end; a balloon positioned at the main elongated element distal end, the balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough; a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use; a longitudinally movable sheath positioned external to the main elongated element, the longitudinally movable sheath having a distal end and a proximal end; and a core wire unslidingly attached to the main elongated element at a core wire attachment point, the core wire including an internal core wire portion positioned within the main elongated element and an external core wire portion positioned distally with respect to the internal core wire portion, the external core wire portion external to and running alongside the balloon, wherein a position of the sheath distal end with respect to the balloon defines an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for treating a lesion in a vessel, comprising:
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providing a device having a main elongated element, a balloon positioned at a distal end of the main elongated element, a distal connecting element positioned at a distal end of the balloon, and a longitudinally movable sheath positioned external to the main elongated element and a portion of the balloon; inserting a tracking guidewire into the vessel; backloading the tracking guidewire into the distal connecting element; advancing the device over the tracking guidewire until the distal end of the device is adjacent to the lesion; retracting the sheath to expose an exposed portion of the balloon having a length suitable for treating the lesion; and inflating the exposed portion of the balloon to push at least the tracking guidewire against a first portion of the lesion in the vessel, wherein the sheath prevents expansion of an unexposed portion of the balloon. - View Dependent Claims (13, 14, 15, 16)
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17. A device for introduction into a vessel, comprising:
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a main elongated element having a main elongated element proximal end and a main elongated element distal end; a balloon positioned at the main elongated element distal end, the balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough; a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use; and a longitudinally movable sheath positioned external to the main elongated element, the longitudinally movable sheath having a distal end and a proximal end, wherein a position of the sheath distal end with respect to the balloon defines an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen and wherein a sheath distal end includes a tapered end with a soft edge that expands upon retraction of the sheath over the balloon. - View Dependent Claims (18, 19, 20, 21, 22, 23)
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24. A device for introduction into a vessel, comprising:
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a main elongated element having a main elongated element proximal end and a main elongated element distal end; a balloon positioned at the main elongated element distal end, the balloon having a balloon proximal end, a balloon distal end, and an inflation lumen therethrough; a distal connecting element positioned at the distal end of the balloon to receive a guidewire during use; a longitudinally movable sheath positioned external to the main elongated element, the longitudinally movable sheath having a distal end and a proximal end, an auxiliary elongate element proximal to the balloon within a portion of the main elongate element and aligned with the distal connecting element; and a core wire attached to the auxiliary elongate element wherein a position of the sheath distal end with respect to the balloon defines an exposed portion of the balloon that expands when fluid is delivered to the balloon through the inflation lumen. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification