Electronic system to distinguish between sinus and nonsinus atrial depolarizations which do not stimulate ventricular depolarizations in response to nonsinus atrial depolarizations
US4712554A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 8, 1985 |
| Grant date | Dec 15, 1987 |
| Priority date | — |
| Expiry date | Apr 8, 2005 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3622
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electronic system for maintaining atrio-ventricular synchrony that distinguishes between sinus and nonsinus atrial depolarizations and that stimulates ventricular contraction only when the immediately preceding atrial contraction was a pacemaker stimulated or spontaneous sinus depolarization. Incorporated into the electronic system is a method of determining the sequence of atrial activation to distinguish sinus from nonsinus atrial activations. The atrial activation sequence is determined by comparing the time at which electrical activity is detected at one point in the atrium to the time at which electrical activity is detected at a point in the atrium closer to the ventricle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.