Charge balanced cardiac pacing from high voltage circuitry of an extra-cardiovascular implantable cardioverter defibrillator system
US12005263B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 27, 2022 |
| Grant date | Jun 11, 2024 |
| Priority date | — |
| Expiry date | Oct 27, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3987
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An extra-cardiovascular implantable cardioverter defibrillator (ICD) having a high voltage therapy module is configured to control a high voltage charging circuit to charge a capacitor to a pacing voltage amplitude to deliver charge balanced pacing pulses. The capacitor is chargeable to a shock voltage amplitude that is greater than the pacing voltage amplitude. The ICD is configured to enable switching circuitry of the high voltage therapy module to discharge the capacitor to deliver a first pulse having a first polarity and a leading voltage amplitude corresponding to the pacing voltage amplitude for pacing the patient's heart via a pacing electrode vector selected from extra-cardiovascular electrodes. The high voltage therapy module delivers a second pulse after the first pulse. The second pulse has a second polarity opposite the first polarity and balances the electrical charge delivered during the first pulse.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.