Dynamic adjustment of capture management “safety margin”
US7783355B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 21, 2004 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Feb 9, 2027 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61N1/3712
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cardiac stimulation system and associated capture management method are provided in which a safety factor, used in setting pacing pulse output energy, is automatically adjusted in response to the detection of indicators of a likely increase in pacing threshold. The method includes monitoring for increased pacing threshold indicators, which may also be associated with a compromised ability to perform a pacing threshold search. Such indicators may include, but are not limited to, the presence of arrhythmias, arrhythmia episode duration, pacing mode switches, refractory sensed events, and/or lead impedance changes. In response to the detection of a selected indicator of increased pacing threshold, the safety factor is automatically increased. After an increased pacing threshold indicator has not be detected for an interval of time, or if a pacing threshold search yields a result, the safety factor may be restored to a programmed value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.