St. Jude Medical Inc on Wednesday halted sales of two brands of lead wires used in its cardiac resynchronization therapy (CRT) devices due to worn insulation, following similar problems with another type of lead wire recently. No patient injuries or product failures have been reported as a result of the latest insulation problem, which involves its QuickSite and QuickFlex left ventricular leads used to connect its CRT devices to the heart, the company said. The devices use a specialized pacemaker to re-coordinate the action of the right and left ventricles of the heart in patients with congestive heart failure.
