Method an apparatus for detection of heart disease
US4905706A · kind A · utility
113Cited by
8References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 1988 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Apr 20, 2008 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/336
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A method and apparatus for detection of coronary artery disease. The apparatus records and analyzes that portion of the phonocardiogram lying between about 100 to 600 Hz. An electrocardiogram is also recorded and examined in order to pinpoint the diastolic window of PCG data. This window of data is subject to autocorrelation analysis and spectral analysis, resulting in a partial correlation coefficient index and a power density index. A linear combination of these two indices results in a Cardiac Screening Index which is indicative of the presence or absence of coronary artery disease.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.