MEDICAL ELECTRICAL LEAD

摘要

A medical electrical lead having an electrode head with an internal lumen mounted to a proximal portion of the lead body and a rotatable fixation heli x advanceable from the internal lumen. The helix is mounted to a rotatable sha ft which is provided with a central shaft portion and circumferential shoulders proximal and distal to the central shaft portion. A seal is mounted in the lumen of the electrode head, encircling the shaft and C-shaped seal retainer s are mounted in the lumen of the electrode head member proximal and distal to the seal.