A seal adapted for use with medical devices is provided with a lead having a distal tip electrode. The distal tip of the lead is adapted for implantation on or about the heart and for connection to a system for monitoring or stimulating cardiac activity. The lead can include a fixation helix for securing...http://www.google.com.au/patents/US7412290?utm_source=gb-gplus-sharePatent US7412290 - Seal for use with medical device and system
