Transvenous Intracardiac Pacing Catheter Having Improved Leads

A self-positioning, quick-deployment low profile transvenous electrode system for pacing of a heart with a pacemaker, comprising:

• a pair of insulated electrical wires to form a first ventricle lead and a second ventricle lead, the first and the second ventricle leads disposed within an outer steerable catheter sheath, said outer steerable catheter sheath being removable from said first and said second ventricle leads when inserted into the heart for deploying the first ventricle lead and the second ventricle lead to the ventricle, said outer steerable catheter sheath being entirely removed from the ventricle when the transvenous electrode system is engaged,
• each of the first and the second ventricle leads have a proximal body portion, a distal end portion, and a tip portion,
• the proximal body portion made from a radiopaque polymer-covered copper wire, the distal end portion made from shape memory material, the shape memory material selected from stainless steel, spring steel, cobalt-chromium alloy, nickel-titanium alloy, and mixtures thereof,
• the tip portion comprising a domed head connected to a cylindrical sidewall, said cylindrical sidewall having a sloped proximal edge connected to a tapered coupling, said tapered coupling forming a smooth transition to an outer diameter of the insulated wire,
• the tip portion made from shape memory material and a radiopaque material, the radiopaque material selected from a barium-containing compound, a bismuth-containing compound, a steel compound, a tungsten-containing compound, and mixtures thereof,
• the two ventricle leads are offset 180 degrees from each other,
• the steerable catheter sheath is about 1.3 mm diameter or 4 French and is comprised of a distal portion and a proximal portion, and has a distance marker every 10 cm along its entire length,
• the distal portion of the steerable catheter sheath is 5 cm in length and has a 0.010″ pitch coil and a biocompatible polymer cover,
• the proximal portion of the steerable catheter sheath is 30 cm in length, has a 0.020″ pitch coil, a biocompatible polymer cover, at a proximal end of the proximal portion has a hub element, a Touhy-Borst access connector with a side port, an actuator dial that allows the steerable catheter sheath to be shaped and controlled, a deployment stop, and a cable junction housing.