Method and device for estimating a myocardial performance parameter
US9241653B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Aug 28, 2008 |
| Grant date | Jan 26, 2016 |
| Priority date | — |
| Expiry date | Nov 16, 2029 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/7235
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An implantable medical device applies an electric signal to at least a portion of a heart in a subject. A resulting electric signal is collected from the heart and is used together with the applied signal for determining a cardiogenic impedance signal. The impedance signal is processed in order to estimate an isovolumetric contraction time, an isovolumetric relaxation time and an ejection time for a heart cycle. These three time parameters are employed for calculating a Tei-index of the heart. The Tei-index can be used as myocardial performance parameter in heart diagnosis and/or cardiac therapy adjustment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.