Abstract: An external neurostimulator includes a housing including a base housing and a top housing, a power source, a pulse generator, and a first and second series of spring-loaded pins electrically coupled to the pulse generator. The top housing includes a central portion, a first side door hingedly coupled to a first side of the central portion, and a second side door hingedly coupled to a second side of the central portion. Each of the first side door and the second side door include a channel formed thereon that is configured to directly receive a proximal end portion of an implantable lead. Each channel includes a series of longitudinally spaced-apart openings formed on the first side door and the second side door, respectively. The first and second series of spring-loaded pins extend through the series of longitudinally spaced-apart openings of the channel on the first and second side doors, respectively.