FIGURE 6.

Test data using a combined inferior‐superior approach. Maximum Force data plotted for all snare test cases. Two findings are demonstrated. (1) The blue solid circles demonstrate when a Needle Eye Snare is placed distally on the lead (only 1.27 cm [0.5 inch] proximal to the anode) less force is required before lead component failure than a more proximal snare position (5.08 cm [2.0 inch]). Original testing conducted in units of inches for snare location. Traction forces of 13 lbs or greater were tolerated prior to locking stylet failure. (2) The engagement of the locking stylet within the inner sheath is critical (Blue open circle versus red diamonds). Pulling the lead/locking stylet into the inner sheath results in kinking the stylet and firmly engages the locking stylet as part of the extraction rail [Color figure can be viewed at wileyonlinelibrary.com]