Patent ID: 9072890
Filing Date: 2015-07-07
Classification: A61N

Abstract:
1. An electrical lead for a cardiac device, the electrical lead comprising: a lead body having a proximal end and a distal end, the lead body sized for insertion through a lumen of a steerable catheter; an anchor arranged to secure the distal end of the lead body adjacent an area of cardiac tissue; a first electrode and a second electrode extending through the lead body, the first and second electrodes each terminating in a tip having a proximal end, a distal end, and an effective length, the tip of the first and second electrodes arranged to extend from the lead body for insertion into the area of cardiac tissue; the tip of each of the first and second electrodes including a fully insulated portion on the proximal end, a fully insulated portion on the distal end, each of the fully insulated portions on both the proximal and distal ends having an insulated length measuring between 5 percent and 40 percent of an effective length of the tip, the tip of each of the first and second electrodes further including an intermediate section between the proximal and distal ends having a continuous uninsulated portion, wherein the first electrode and the second electrode are electrically connected to a circuit that delivers opposite polarity to the first and second electrodes.