Patent ID: 8433404

Claim:
An apparatus comprising: a cardioversion or defibrillation therapy energy source coupled to a first node; a bridge circuit coupled to the first node and a second node, wherein the bridge circuit includes: a first switch coupled to the first node and a third node, wherein the third node is configured to be communicatively coupled to a first implantable electrode sized and shaped for defibrillation or cardioversion therapy; a second switch coupled to the first node and a fourth node, wherein the fourth node is configured to be communicatively coupled to a second implantable electrode sized and shaped for defibrillation or cardioversion therapy; a third switch coupled to the third node and the second node; a fourth switch coupled to the fourth node and the second node; and a first integrated circuit and a second integrated circuit, wherein the first and second switches are included in the first integrated circuit and have adjacent and non-adjacent edges, and the third and fourth switches are included in the second integrated circuit and have adjacent and non-adjacent edges, wherein high voltage electrical isolation structures are disposed between adjacent edges and at non-adjacent edges of the of the first and second switches and are disposed between adjacent edges and at non-adjacent edges of the third and fourth switches, and wherein the isolation structures between the adjacent edges are formed thinner than the isolation structures formed at the non-adjacent edges, and wherein the second integrated circuit is stacked substantially superjacent to the first integrated circuit such that a cathode of the first switch is coupled to an anode of the third switch and a cathode of the second switch is coupled to an anode of the fourth switch.