| 摘要 |
<p>Improved catheters for clot removal. A catheter-containing light guide may be passed through a clot. Light may emanating from the light guide as the light guide is passed forward through the clot and/or is drawn back through the clot in order to ablate the clot. In one set of embodiments, the invention provides for methods and systems for delivering the light guide through the clot and for drawing it back through the clot to irradiate and/or ablate the clot. The invention provides, in another set of embodiments, methods and systems to deliver the light energy or radiation to the clot to perform ablation, for example during a single pass. The invention also provides, in yet another set of embodiments, methods and systems to increase the efficiency of the ablation, for example, by increasing the spot size. In still another set of embodiments, the invention provides methods and systems to remove blood from the area between the point on the light guide where the light exits and the portion of the clot to be ablated ('clearing the field'). These and other embodiments of the invention may be combined in various ways to provide a catheter system optimally designed for the particular application.</p> |
