Patent ID: 7016734

Claim:
In an implantable pulse generator of the type including a hermetically sealed housing containing an electrical circuit having input nodes and output nodes, a feed-through assembly having conductive pins connected to the input nodes and output nodes, a header having a longitudinal bore adapted to receive a proximal terminal of a medical lead and at least one electrical connector block disposed in said longitudinal bore and connected to a conductive pin of the feedthrough assembly, the connector block including a first bore through a thickness dimension thereof and generally coaxially aligned with the longitudinal bore, the connector block further including a transversely extending bore that intersects the first bore, the improvement comprising: (a) internal threads in the transversely extending bore of the connector block extending from an exterior surface of the connector block to an annular-undercut that is disposed a predetermined distance inward of the first bore to form a 360-degree flat surface; and (b) a setscrew having a proximal end and distal end with external threads on a predetermined portion of the setscrew extending from the proximal end toward, but short of, the distal end and with an unthreaded distal end portion being of a lesser diameter than the predetermined portion that is threaded to define a 360-degree shoulder on the setscrew that is in a plane that is perpendicular to the longitudinal axis of the setscrew, where the 360-degree shoulder is adapted to butt against the 360-degree flat surface of the annular undercut in the connector block when the distal end of the setscrew has entered the first bore of the connector block.