Abstract: A moveable contact connector system provides easy lead insertion, lead retention, and reliable electrical connection for implantable devices. The connector system may be used with in-line leads commonly found in such applications. Moveable contacts are provided in the connector, which contacts are placed in a first position for easy lead insertion, and in a second position for lead retention. The second position also provides a good electrical connection between the moveable connector contacts and the lead contacts. Multiple means for moving said at least one moveable contact between the first and second positions are described. A first embodiment uses a rotatable cam which is rotated to align the cam lodes with said at least one moveable contact, pushing the movable contacts against the lead contacts. The second and third embodiments use a sliding key to force said at least one moveable contact against the lead contacts.