Two-dimensional refractory period
US8600490B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Jul 31, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/366
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A two-dimensional refractory period is defined in conjunction with the detection of cardiac events. Detection parameters associated with the two-dimensional refractory period may define a period of time during which a sensed cardiac signal is blanked or may define a period of time during which a given sensing threshold applies. The two-dimensional refractory period may be employed in atrial sensing to selectively blank far-field T-waves while enabling P-wave detection. The two-dimensional refractory period may be employed in ventricular sensing to selectively blank near-field T-waves while enabling detection of the QRS complex. The detection parameters associated with the two-dimensional refractory period may be adapted based on characteristics of previously detected cardiac signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.