| 摘要 |
<p>This invention is a transurethral radio frequency apparatus (12) for ablation of the prostate gland through the urethra formed by a urethral wall, a probe (14) consisting of a flexible elongate tubular member (10) having proximal and distal extremities and a cylindrical sleeve ablation electrode (76) formed of a conductive material carried by the distal extremity of the flexible elongate tubular member (10) and having a bore therein. The flexible elongate tubular member (10) is provided with a first flow lumen (41) for delivering a cooled fluid to the bore of the ablation electrode (76) and a second flow lumen (48) for returning the cooled fluid. Means are connected to the probe for supplying a coolant solution (26) to the probe, to suppply radio frequency energy (37) to the electrode (76) while it is being cooled and to monitor the temperature (36) of the ablation electrode (76) so that the ablation electrode (76) is maintained at a temperature below a predetermined temperature.</p> |
