Pacemaker with safe R-wave synchronization during countershock conversion of atrial fibrillation
US5999850A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 21, 1997 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | Jul 21, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3987
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable atrial defibrillator analyzes both the atrium and the ventricle to determine an abnormal atrial condition of the atrium and if the ventricle is unstable. Therapy is applied to correct the abnormal atrial condition, such as atrial fibrillation, only if the ventricle is stable, to insure that the therapy does not provoke a ventricular tachyarrhythmia. If the ventricle is unstable, first a process is performed to stabilize it, for example by using a ventricular pacing protocol. After the ventricle is stabilized, the atrial therapy is applied in synchronism with the ventricular events (i.e., in synchronism with either ventricular intrinsic events or ventricular pacing pulses.)
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.