| 摘要 |
An apparatus for treating an occlusion or constriction, such as a stenosis in a blood vessel or other conduit in the body for treating a tumour or cancerous area occurring around a conduit or duct in the body. The apparatus comprises a catheter (10) provided with a catheter centering balloon (41) encircling a portion of the catheter near its distal end. This centering balloon contains a plurality of thin spoke-like members (44,46,48,50). A second dilatation balloon (14) attached to the surface of the catheter is used to treat the stenosed area. A radioactive source of material (28) can be included for treating the stenosis or cancer. |
