Atrial arrhythmia detection for an active implantable medical device
US7113826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2002 |
| Grant date | Sep 26, 2006 |
| Priority date | — |
| Expiry date | Apr 28, 2024 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Apparatus for detecting atrial arrhythmias in the treatment of disorders of the heartbeat rate in active implantable medical devices of the pacemaker, cardioverter, defribillator and/or multisite type. This device includes conventional systems, circuits and control algorithm for detecting spontaneous and stimulated ventricular events (R, V) and atrial events (P, A), indicating the delivery of a ventricular and/or atrial event, and inhibiting the detection of atrial events after detection of a ventricular event throughout a post-ventricular atrial absolute refractory period (PVAARP). Detecting atrial events includes protecting against the detection of atrial signals that do not correspond to an atrial event that has actually occurred, in particular protecting against atrial detection of far-field signals caused by a ventricular event. The protection operates by a dynamic adjustment of the sensitivity of detection by temporarily raising (t1, t2) a detection threshold (ΔS1, ΔS2) after detection of a ventricular event without detection of a preceding (spontaneous or stimulated) atrial event during the same cardiac cycle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.