Device for intravascular delivery of beta emitting isotopes

摘要

Catheter devices to deliver radiation to vessel walls, particularly for the prevention of restenosis after angioplasty, include either a radioactive material supply tube 40 peripherally wound about the inflatable balloon of the catheter, or alternatively, a radioactive tip 132 sliding within a shielding lumen 138, the shielding lumen itself being housed within the main lumen 112 having a guide wire lumen 118 along its periphery.