System and method of automatically adjusting sensing parameters based on temporal measurement of cardiac events
US6625490B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 14, 2001 |
| Grant date | Sep 23, 2003 |
| Priority date | — |
| Expiry date | Mar 27, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3704
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system and method for automatically adjusting the sensing parameters in an implantable cardiac stimulation device is described. The adjustment is based on the amplitudes and the onsets and ends of cardiac events, such as R-waves, T-waves, far-field R-waves, and/or far-field T-waves. Having determined the onset and termination of the cardiac events for a given number of cardiac cycles, particular variables that characterize these cardiac events can be averaged and stored in memory. Such variables include the peak amplitudes sampled during a cardiac event, the duration of the cardiac event, and the duration between cardiac events. Based on the averaged variables, the system automatically adjusts the sensing parameters, such as sensitivity, and blanking and refractory periods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.