DEVICE FOR TRANSURETHRAL THERMAL THERAPY

摘要

An intraurethral catheter shaft (32) comprises a plurality of lumens extending between a first end and a second end of the shaft (32). An antenna lumen (58) has a generally circular cross-sectional surface area and is positioned nearer a first outer surface (70) than a second outer surface (76) of the catheter shaft (32). A first and second pair of cooling lumens (64A, 64B and 66A, 66B) substantially surround the antenna lumen (58) and have a generally arc shaped cross-sectional surface area. The cooling lumens are configured to be circumjacent to the antenna lumen (58) about a substantial majority of the antenna lumen (58). A urinary drainage lumen (60) is positioned between the second pair of cooling lumens (66A, 66B) adjacent the antenna lumen (58) and has a generally circular cross-sectional surface area. The lumens of the catheter shaft (32) are defined by a unitary wall (68) having a substantially uniform thickness throughout the catheter (28).