| abstract |
An apparatus for treating an occlusion or constriction, such as a stenosis in anblood vessel or other conduit in the body for treating a tumour or cancerousnarea occurring around a conduit or duct in the body. The apparatusncomprises a catheter (10) provided with a catheter centering balloon (41)nencircling a portion of the catheter near its distal end. This centering balloonncontains a plurality of thin spoke-like members (44,46,48,50). A secondndilatation balloon (14) attached to the surface of the catheter is used to treatnthe stenosed area. A radioactive source of material (28) can be included forntreating the stenosis or cancer. |