Delivery of atrial defibrillation shock based on estimated QT interval
US6512951B1 · kind B1 · utility
41Cited by
38References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 14, 2000 |
| Grant date | Jan 28, 2003 |
| Priority date | — |
| Expiry date | Nov 7, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3956
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus and method for delivering electrical shock therapy in order to treat atrial tachyarrhythmias such as fibrillation is disclosed. In accordance with the method, atrial defibrillation shocks are delivered synchronously with an R wave if the current R-R interval meets one or more safety criteria so as to be considered shockable. A shockable R-R interval may be defined as one that exceeds the previous QT interval by a specified therapy margin. In one embodiment, the previous QT interval is estimated based upon the measured preceding R-R interval.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.