The Beta-Cath(TM) System is a device designed to deliver a low dose of Beta radiation to the site of an angioplasty or stent placement to prevent re-narrowing. Beta radiation treatment is intended to discourage the overgrowth of normal tissue as the healing process occurs following angioplasty or after stent placement. Overgrowth of normal tissue is thought to be a major factor responsible for re-narrowing of the artery after angioplasty or stent placement.
A Beta-Cath procedure is performed in the cardiac catheterization lab following an angioplasty to open a blockage within a coronary artery. The Beta-Cath catheter is positioned in the artery after the balloon catheter is removed. The Beta-Cath catheter allows delivery of Beta radiation sources to the site of the blockage and treatment of the area for a precise amount of time, usually 2 to 5 minutes. The size of the artery helps determine the treatment time. When the Beta radiation treatment is completed, the radiation sources and catheter are removed. No radiation remains in the body.
With the Beta-Cath(TM) System, the dose of radiation is localized to the treatment site in the coronary artery and the risk of complications is thought to be low. The dose of radiation to the body is minimal - less than a chest x-ray and much less than that received during a heart catheterization.