Method and apparatus for characterizing cardiac tissue from local electrograms
US6725085B2 · kind B2 · utility
Inventors
Key dates
| Filing date | Aug 22, 2001 |
| Grant date | Apr 20, 2004 |
| Priority date | — |
| Expiry date | Nov 21, 2021 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/349
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The property of cardiac tissue at a local site, a plurality of sites of in a region of a heart may be characterized based on local electrograms measured at the local site, at a plurality of sites or in the region, respectively. The property may be characterized by normalizing the local electrogram, extracting a feature vector from the normalized electrogram, and classifying the tissue property based on the feature vector. The method of may further include computing a map of the tissue property and treating the tissue based on the resultant map. Apparatus to characterize the property includes a catheter and a processor to normalize the local electrogram, extract the feature vector from the electrogram and classify the tissue based on the feature vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.