Patent ID: 11957919
Assignee: PACESETTER, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 18:
19. An implantable system, comprising:
a non-transvenous lead configured to be implanted outside of a heart; and
an implantable medical device (IMD), comprising:
an output configured to be connected at least to the lead;
a current generator (CG) circuit comprising a flyback transformer configured to generate pacing pulses;
a switching circuit coupled between the CG circuit and the output;
one or more capacitors coupled in parallel with the CG circuit and the switching circuit; and
one or more processors coupled to the CG circuit and configured to
manage delivery of a multi-phase therapy that includes first and second phase therapies, wherein: a) during the first phase therapy, the one or more processors are configured to control the CG circuit to charge the one or more capacitors and use electrical energy stored in the one or more capacitors to deliver one or more shock pulses via the non-transvenous lead; and b) during the second phase therapy, the one or more processors are configured to control the CG circuit to generate the pacing pulses with a constant current at the output, independent of the one or more capacitors.