Occlusion-crossing devices, imaging, and atherectomy devices
First Claim
Patent Images
1. A catheter device for crossing occlusions, the device comprising:
- an elongate body;
a central lumen extending within the elongate body from a proximal end of the elongate body to a distal end of the elongate body;
a rotatable tip at the distal end of the elongate body and configured to rotate in a first direction and a second direction relative to the elongate body;
an optical coherence tomography (OCT) imaging sensor comprising an optical fiber coupled with the rotatable tip and configured to rotate therewith, wherein the optical fiber is configured to wrap around the central lumen within the elongate body as the rotatable tip rotates; and
a drive mechanism configured to continuously and automatically alternate rotation of the rotatable tip between the first direction and the second direction a plurality of times, each rotation in the first and second direction including a substantially equivalent number of turns.
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Abstract
The present invention relates to: (1) guidewire support/placement catheters; (2) support/placement catheters with imaging; (3) atherectomy catheters, (4) atherectomy catheters with imaging, (5) occlusion crossing catheters, and (6) occlusion crossing catheters with imaging as well as methods for using them to treat disorders (and particularly peripheral artery disease) and systems including them.
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Citations
28 Claims
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1. A catheter device for crossing occlusions, the device comprising:
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an elongate body; a central lumen extending within the elongate body from a proximal end of the elongate body to a distal end of the elongate body; a rotatable tip at the distal end of the elongate body and configured to rotate in a first direction and a second direction relative to the elongate body; an optical coherence tomography (OCT) imaging sensor comprising an optical fiber coupled with the rotatable tip and configured to rotate therewith, wherein the optical fiber is configured to wrap around the central lumen within the elongate body as the rotatable tip rotates; and a drive mechanism configured to continuously and automatically alternate rotation of the rotatable tip between the first direction and the second direction a plurality of times, each rotation in the first and second direction including a substantially equivalent number of turns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of crossing an occlusion or lesion, the method comprising:
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advancing an occlusion crossing catheter into a body lumen, the occlusion crossing catheter having an elongate body, a central lumen extending within the elongate body from a proximal end of the elongate body to a distal end of the elongate body, a rotatable tip at the distal end of the elongate body, and an optical coherence tomography (OCT) sensor comprising an optical fiber coupled with the rotatable tip; automatically rotating the rotatable tip in a first direction relative to the elongate body of the occlusion crossing catheter such that the OCT sensor rotates and the optical fiber wraps around the central lumen within the elongate body; automatically rotating the rotatable tip a substantially equivalent number of rotations in a second direction relative to the elongate body; repeating the rotating steps such that the tip is continuously and automatically alternated between rotating in the first direction and the second direction; imaging a region of the body lumen surrounding the catheter using the OCT sensor; and passing the rotatable distal tip past an occlusion in the body lumen. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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22. A catheter device for crossing occlusions, the device comprising:
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an elongate body; a central lumen extending within the elongate body from a proximal end of the elongate body to a distal end of the elongate body; a rotatable tip at the distal end of the elongate body and configured to rotate in a first direction and a second direction relative to the elongate body, wherein the rotatable tip comprises a substantially smooth, curved outer surface that presents an atraumatic tissue-contacting surface when rotated in the first direction and that presents a dissecting surface when rotated in the second direction; an optical coherence tomography (OCT) imaging sensor comprising an optical fiber coupled with the rotatable tip and configured to rotate therewith, wherein the optical fiber is configured to wrap around the central lumen within the elongate body as the rotatable tip rotates; and a drive mechanism configured to continuously and automatically alternate between rotating the rotatable tip a substantially equivalent number of rotations in the first direction and the second direction. - View Dependent Claims (23, 24, 25, 26, 27, 28)
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Specification