Method and apparatus for stimulating a heart
US5395397A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1993 |
| Grant date | Mar 7, 1995 |
| Priority date | — |
| Expiry date | Sep 9, 2013 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/368
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A heart stimulator is disclosed which is capable of sensing and stimulating both the atrium and ventricle in a heart such a way that a ventricular stimulation pulse is emitted either after a stimulated or spontaneous atrial event following the atrioventricular interval, or after the expiration of a minimum synchronous interval following a stimulated or spontaneous ventricular event, depending on which interval elapses last. The functioning of the heart stimulator, when the atrium's spontaneous rate is faster than a stimulation rate corresponding to the minimum synchronous interval, is improved by delivering an extra atrial stimulation pulse at a second predetermined atrioventricular interval before the next ventricular stimulation pulse, if the interval between the most recently detected atrial event and the next ventricular stimulation pulse exceeds a predetermined threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.