Methods and apparatus for detecting heart failure decompensation event and stratifying the risk of the same
US9622664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 9, 2014 |
| Grant date | Apr 18, 2017 |
| Priority date | — |
| Expiry date | Oct 23, 2034 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B7/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Devices and methods for detecting heart failure (HF) events or identifying patient at elevated risk of developing future HF events, such as events indicative of HF decompensation status, are described. The devices and methods can detect an HF event or predict HF risk using one or more physiologic sensor signals including an electrogram and a heart sound signal. A medical device can use the physiologic signals to calculate one more signal metrics indicative of systolic function of the heart, including relative timing between first and second signal features selected from signal features generated from the electrogram or the heart sound signals. The medical device can detect an HF event using the signal metrics, or use the signal metrics to calculate a composite risk indicator indicative of the likelihood of the patient later developing an event indicative of worsening of HF.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.