System, stethoscope and method for indicating risk of coronary artery disease
US9125564B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 2011 |
| Grant date | Sep 8, 2015 |
| Priority date | — |
| Expiry date | Dec 13, 2031 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B7/04
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system for detection of frequency power for diagnosing coronary artery disease (CAD), comprising: an acoustic sensor to be placed on the chest of a patient to generate acoustic signals SA: a memory adapted to store acoustic signals SA; a control unit adapted to receive said acoustic signals SA; the control unit comprising: an identification unit to identify diastolic or systolic periods in a predetermined time period and to generate a period signal SP, a filtering unit adapted to apply a filter to said identified periods to generate a low frequency band signal SLFB indicating low frequency bands of identified periods; a calculation unit to estimate the power in said low frequency band of identified periods, to calculate a low frequency power measure and to generate a low frequency power measure signal SLFP. The invention also relates to a stethoscope and a method for detection of low frequency power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.