Liquid light-guide catheter with optically diverging tip
First Claim
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1. A catheter comprising:
- a sheath having a proximal end, a distal end, a liquid infusion port, and an inner lumen extending from the liquid infusion port to the distal end of the sheath, wherein the inner lumen is configured to receive fluid introduced into the liquid infusion port and, wherein the distal end of the sheath comprises a completely solid tubular wall;
a diverting tip positioned within the inner lumen, the diverting tip having a proximal end and a distal end, wherein the distal end of the diverting tip is larger than the proximal end of the diverting tip and is configured to divert at least a portion of fluid, wherein the diverting tip is configured to move relative to the sheath; and
a plurality of optical fibers having a distal end and configured to transmit light within the inner lumen of the sheath, the plurality of optical fibers positioned within the inner lumen of the sheath such that the distal end of the plurality of optical fibers is proximal to the diverting tip.
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Abstract
A light-diverting catheter tip is provided according to embodiments disclosed herein. The light-diverting catheter tip may be coupled with the distal tip of a laser catheter and divert at least a portion of the light exiting the distal tip of the laser catheter such that the spot size of the laser beam on an object after exiting the catheter tip is larger than the spot size of the light entering the catheter without the catheter tip. The catheter tip may be removably coupled with the catheter or constructed as part of the catheter. In other embodiments, the catheter tip may conduct fluid and/or divert fluid at the tip of the laser catheter.
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Citations
10 Claims
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1. A catheter comprising:
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a sheath having a proximal end, a distal end, a liquid infusion port, and an inner lumen extending from the liquid infusion port to the distal end of the sheath, wherein the inner lumen is configured to receive fluid introduced into the liquid infusion port and, wherein the distal end of the sheath comprises a completely solid tubular wall; a diverting tip positioned within the inner lumen, the diverting tip having a proximal end and a distal end, wherein the distal end of the diverting tip is larger than the proximal end of the diverting tip and is configured to divert at least a portion of fluid, wherein the diverting tip is configured to move relative to the sheath; and a plurality of optical fibers having a distal end and configured to transmit light within the inner lumen of the sheath, the plurality of optical fibers positioned within the inner lumen of the sheath such that the distal end of the plurality of optical fibers is proximal to the diverting tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification