Guidewire for crossing occlusions or stenoses having a shapeable distal end
First Claim
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1. A shapeable guidewire for crossing an occlusion or stenosis within a body lumen, said guidewire comprising:
- a guidewire body having a proximal end, a distal end, and a central passage therethrough, wherein a distal region of the body is malleable so that said distal region may be manually configured to a desired curved shape; and
a mechanically driven core element disposed in the central passage and passing out through the distal end of the guidewire body, wherein the core element may be rotated, within the central passage while the distal region of the body retains its desired curved shape;
wherein the core element includes a cutting element that creates a cutting path when rotated.
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Abstract
A hollow guidewire with a shapeable distal end, for removing tissue from a body lumen, such as a coronary artery. The hollow guidewire comprises an elongate, tubular guidewire body that has an axial lumen. A tissue removal assembly, such as a rotating drive shaft, is positioned at or near a distal end of the tubular guidewire body and extends through the axial lumen. Actuation of the tissue removal assembly removes occlusive material in the body lumen.
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Citations
29 Claims
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1. A shapeable guidewire for crossing an occlusion or stenosis within a body lumen, said guidewire comprising:
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a guidewire body having a proximal end, a distal end, and a central passage therethrough, wherein a distal region of the body is malleable so that said distal region may be manually configured to a desired curved shape; and a mechanically driven core element disposed in the central passage and passing out through the distal end of the guidewire body, wherein the core element may be rotated, within the central passage while the distal region of the body retains its desired curved shape; wherein the core element includes a cutting element that creates a cutting path when rotated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A method for crossing a luminal occlusion, said method comprising:
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providing a shapeable guidewire; manually shaping a distal end of the guidewire to impart a desired curved shape; advancing the guidewire through an occlusion while a core carried by the guidewire is mechanically rotated to engage and penetrate the occlusion while the distal end of the guidewire; wherein the core includes a cutting element that creates a cutting path when rotated. - View Dependent Claims (26, 27, 28, 29)
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Specification