Temporary pacing wire for use in cardiac surgery

摘要

A pacing wire that eliminates the risk of cardiac tamponade when the wires are pulled through the heart muscle for removal by providing a "slip joint" within the pacemaker wire by having one half of the wire fit snugly into the other half while covering the joint with overlapping insulation to provide a water tight seal to prevent risk of short circuit. When the pacing wire is removed, the insulation permits the two component halves to "slip" relative to each other. When the wire is removed, the force applied to the wire at the skin is transferred to the subcutaneous tissue by a "winged insulation umbrella" which prevents motion of the portion of the wire left attached to the heart and transfers the pulling force to the chest wall. Consequently, there is zero net force on the heart where the bare wire is in contact with the heart, leaving this portion of the wire stationary and eliminating risk of damage to the heart muscle.