Patent ID: 6931280

Claim:
An implantable cardiac stimulation device, comprising: a first terminal for connection to a left ventricular pacing electrode, said left ventricular pacing electrode for placement in electrical contact with a left ventricle; a second terminal for connection to a right ventricular pacing electrode, said right ventricular pacing electrode for placement in a right ventricle; a pulse generator; switch means for connecting any combination of said first and second terminals to said pulse generator to deliver electrical therapy to said left ventricular pacing electrode, said right ventricular pacing electrode, or both said left and right ventricular pacing electrodes; wherein said switch means comprises: a first switch connecting said pulse generator to said first terminal; and a second switch connecting said pulse generator to said second terminal; and control means for controlling operation of said pulse generator and said switch means; wherein said control means comprises: a programmable microcontroller; and computer readable program code means for causing said microcontroller to control said switch means to close only one of said first and second switches to provide left ventricular pacing to a heart, to close only the other of said first and second switches to provide right ventricular pacing, and to close both of said first and second switches at differing times to provide bi-ventricular pacing with an interventricular delay.