Patent ID: 8694078

Claim:
A method for locating an electrical lead insertion site and inserting electrical leads into a blood vessel, comprising: inserting a catheter device with a proximal and a distal end into a blood vessel, the catheter device comprising a first expandable member, a second expandable member distal to the first expandable member and a contrast release port disposed between the first and the second expandable member near the distal end; expanding the first expandable member and the second expandable member to create a supported region in the blood vessel; identifying an electrical lead insertion site at the supported region in the blood vessel between the two expandable members by releasing a contrast medium through the contrast release port to the supported region and visualizing the contrast medium in the supported region; inserting an electrical lead into the insertion site from an exterior of the blood vessel, wherein the insertion site is supported by the two expandable members; collapsing one of the expandable members while maintaining the other expandable member in an expanded state to support the blood vessel and traversing the electrical lead from the insertion site past the deflated expandable member to a site in the heart.