Evoked response variability as an indicator of autonomic tone and surrogate for patient condition
US6711439B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 14, 2002 |
| Grant date | Mar 23, 2004 |
| Priority date | — |
| Expiry date | Sep 20, 2022 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/4035
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Modern implantable cardiac stimulation devices include processing and data storage capabilities that may be exploited to track myocardial condition and autonomic tone. Implantable devices have a capability to measure and store electrogram information over a period of time in a relatively large capacity memory, with advances in technology allowing increases in memory size. The evoked response varies in amplitude and morphology with changes in autonomic tone, ventricular filling, paced rate, and other parameters. The implantable cardiac device can be configured to sense and accurately quantify the evoked response, derive parameters from the quantified evoked response, store the parameters over long time periods, and derive variability statistics from the parameters to assist in tracking the patient's condition over time, and guiding the patient's therapy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.