An intravenous lead assembly for atriolventricular (AV) sequential pacing includes a channel and a separable core lead. The channel lead and the core lead respectively include first and second helical coil conductors through which first and second wire stylets can be inserted. The first and second helical...http://www.google.de/patents/US4332259?utm_source=gb-gplus-sharePatent US4332259 - Intravenous channel cardiac electrode and lead assembly and method
