Method an apparatus for detection of heart disease
Patent 4905706 Issued on March 6, 1990. Estimated Expiration Date: 
April 20, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
April 20, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3048166 3052756 3280817 3762397 Jet ventilator control system Heart sound detector and cardiac cycle data are combined for diagnostic reliability Phonoangiographic spectral analysing apparatus Method and improved apparatus for analyzing heart activity Patent #: 4628939 InventorsAssigneeApplicationNo. 183830 filed on 04/20/1988US Classes:600/514, Sound generated by successive heartbeat electric signals to represent heart action600/508, Heart600/513Detecting heartbeat electric signal and diverse cardiovascular characteristicExaminersPrimary: Jaworski, Francis J.Assistant: Manuel, George Attorney, Agent or FirmInternational ClassA61B 005/04AbstractA 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. | |
