| 摘要 |
A method and a device for minimally invasive treatment of diseased deep and superficial venous valves are disclosed. Treatment seeks to repair/rejuvenate dysfunctional valve by reducing the circumference of dilated valve rings and by restoring their original shape and function using laser energy to make physical suture points and shrink collagen in selected points. Real time monitoring is by angioscopic view and endovenous echographic control. In a preferred embodiment, system comprises a specific catheter-like device for endovenous insertion that allows for real time view of energy emission and venous surface to be corrected. Catheter flexibility is such that viewing angle and direct energy emission can be oriented properly. Catheter can comprise channels for irrigation or for interchange of laser fibers according to desired irradiation pattern. A preferred embodiment of catheter device also comprises cuffs for temporary occlusion, by inflation and deflation. In preferred embodiments, 1470 nm, 1550 nm or 1900 nm laser energy is applied. This treatment can be applied to venous valves of the deep venous system, as well as valves of the sapheno-femoral junction, terminal valve and pre-terminal valve. |
