US 12,440,694 B2
Output circuitry for multiple-therapy implantable devices
Brandon Tyler Keil, Maple Grove, MN (US); William J. Linder, Golden Valley, MN (US); and Keith R. Maile, New Brighton, MN (US)
Assigned to CARDIAC PACEMAKERS, INC., St. Paul, MN (US)
Filed by CARDIAC PACEMAKERS, INC., St. Paul, MN (US)
Filed on Feb. 13, 2024, as Appl. No. 18/440,312.
Application 18/440,312 is a division of application No. 17/173,723, filed on Feb. 11, 2021, granted, now 11,931,592.
Claims priority of provisional application 62/976,141, filed on Feb. 13, 2020.
Prior Publication US 2024/0226588 A1, Jul. 11, 2024
Int. Cl. A61N 1/39 (2006.01)
CPC A61N 1/3956 (2013.01) [A61N 1/3912 (2013.01); A61N 1/3918 (2013.01); A61N 1/3981 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An electronic circuit for generating at least first and second power tiers for electronic output of a medical device, the circuit comprising:
a high voltage therapy subcircuit configured to generate defibrillation pulses;
a low voltage therapy subcircuit configured to issue pacing pulses;
an H-bridge comprising first and second high side legs and first and second low side legs, each leg comprising a switch, the first high side and first low side legs coupled together at a first load node; and the second high side and second low side legs coupled together at a second load node;
an H-bridge enable switch coupled to the first and second high side legs;
wherein the high voltage therapy subcircuit is coupled to the H-bridge enable switch, and the low voltage therapy subcircuit is coupled to the first and second high side legs, thereby omitting the H-bridge enable circuit from a current path for the low voltage therapy subcircuit.