Rate responsive pacing using the ventricular gradient
US4759366A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 19, 1986 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | Mar 19, 2006 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/36507
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rate responsive cardiac pacing system is provided. In the illustrative embodiment, electrical stimulus pulses are applied to the heart ventricle and the evoked potential of the applied electrical stimulus pulses is detected. The detected potential is integrated over time to obtain a depolarization gradient and a repolarization gradient. A peak to peak time interval is determined from the peak of the depolarization gradient to the peak of the repolarization gradient. The peak to peak time interval is compared to the peak to peak time interval of at least one previous cardiac cycle. The rate of the electrical stimulus pulses is controlled in response to this comparison.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.