Patent attributes
A spring fixation mechanism is adapted for fixing the distal end of an epicardial lead in a myocardium of the heart. The spring fixation mechanism is positioned at a distal end of the lead and includes a spring member and a stop. The spring member is formed about the lead and extends from a proximal end slidable relative to the lead to a distal end fixed to the lead. The stop is coupled to the proximal end of the spring member and is sized to be retained outside of an epicardium of the heart. The distal end of the lead, including the spring fixation mechanism, is inserted into the myocardium with a stylet and/or a pusher tube. The spring member is loaded and released, grasping tissue between adjacent coils of the spring member, fixing the lead within the myocardium.
