Laser ablation catheter
First Claim
Patent Images
1. A catheter assembly comprising:
- a catheter comprising a tubular wall, the tubular wall comprising a distal end, and an inner band disposed at the distal end, the inner band creating an orifice for a lumen extending proximally from the inner band, wherein the orifice is smaller than the lumen, and the orifice and the lumen are adapted to aspirate therethrough a first portion of material within the lumen;
a plurality of optical fibers located within the tubular wall and exposed at the distal end of the catheter, wherein the plurality of optical fibers are adapted to transmit laser energy for ablating a second portion of material;
wherein the inner band comprises a straight interior surface extending from a distal end of the inner band to a proximal end of the inner band.
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Abstract
A system and devices for ablation and removal of occlusions from blood vessels is provided. Laser cutting systems and mechanical cutting systems are provided in catheter devices, the cutting systems operable to ablate, cut, dislodge, and otherwise remove occlusions within a blood vessel that may limit or prevent proper circulation. Catheter systems comprise distal end features adapted to cut and remove at least portions of an occlusion that generally correspond to dimensions of an inner lumen of a catheter.
712 Citations
19 Claims
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1. A catheter assembly comprising:
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a catheter comprising a tubular wall, the tubular wall comprising a distal end, and an inner band disposed at the distal end, the inner band creating an orifice for a lumen extending proximally from the inner band, wherein the orifice is smaller than the lumen, and the orifice and the lumen are adapted to aspirate therethrough a first portion of material within the lumen; a plurality of optical fibers located within the tubular wall and exposed at the distal end of the catheter, wherein the plurality of optical fibers are adapted to transmit laser energy for ablating a second portion of material; wherein the inner band comprises a straight interior surface extending from a distal end of the inner band to a proximal end of the inner band. - View Dependent Claims (2, 3, 4, 18, 19)
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5. A catheter assembly comprising:
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a catheter having a distal end and an orifice for a lumen extending proximally from the distal end, the orifice and the lumen being adapted to aspirate therethrough a first portion of material within the lumen; a plurality of optical fibers located within the catheter and around at least a portion of a perimeter of the lumen and exposed at the distal end of the catheter, the plurality of optical fibers being adapted to transmit laser energy for ablating a second portion of material; an inner band located at the distal end of the lumen and creating the orifice, the inner band comprising a proximal end and a distal end, wherein the inner band has a diameter at its distal end and the lumen has a diameter at its smallest cross section, and wherein the diameter of the inner band is smaller than the diameter of the lumen. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A catheter assembly comprising:
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a catheter wall comprising a distal portion and an orifice to a lumen, wherein the lumen extends toward the distal portion, and the orifice and the lumen being adapted to aspirate therethrough a first portion of material within the lumen; an outer jacket located around the distal portion of the catheter; a plurality of optical fibers located within the catheter and substantially concentric with the lumen, the plurality of optical fibers located radially outward of the lumen and radially inward of the outer jacket, the plurality of optical fibers being adapted to transmit laser energy for ablating a second portion of material; an inner band located at the distal portion of the catheter and within the lumen, the inner band creating the orifice, wherein the inner band has at least one inner diameter, and the lumen has at least one inner diameter, and wherein the at least one diameter of the inner band is smaller than the at least one diameter of the lumen.
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Specification