Surgery – Truss – Pad
Patent
1990-12-17
1993-06-15
Kamm, William E.
Surgery
Truss
Pad
128715, 381 67, A61B 502
Patent
active
052189694
ABSTRACT:
An intelligenet stethoscope for performing auscultation and for automatically diagnosing abnormalities based on body sounds is described in which the body sounds are received, digitized and stored in memory. The body sounds are recorded from a plurality of locations on the body, and all of the sounds are categorized according to specific characteristics to form a matrix of information. The generated matrix is then compared against a plurality of stored matrices using a technique similar to signature analysis. Each of the stored matrices contain information indicative of known abnormalities such as specific heart murmurs, lung abnormalities, etc. When a matrix match is found, the diagnosis is displayed on an LCD display formed in the body of the stethoscope. The LCD display is also capable of displaying a visual representation of the recorded body sounds. The present invention is applicable to heart sounds, lung sounds, and bruits. A wide variety of heart and lung abnormalities along with their signatures are described and the specific steps required for the signature analysis is described.
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"Algorithm for Detecting the First and Second Heart Sounds by Spectral Tracking," to Iwata et al., published in Medical & Biological Engineering & Computing, vol. 18, No. 1, Jan., 1980, describes a detection algorithm for locating the first and second heart sounds.
"Pattern Classification of the Phonocardiogram Using Linear Prediction Analysis," to Ewada et al., published in Medical & Biological Engineering & Computing, vol. 15, No. 4, Jul. 1977 describes the application of linear prediction analysis to extract the spectral pattern from phonocardiogram signals to assist an automatic diagnosis system. The diagnostic system or its construction is not described but merely suggested as an application for this technology.
Bredesen Mark S.
Schmerler Elliott D.
Blood Line Technology, Inc.
Kamm William E.
Lacyk J. P.
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