Apparatus and method for non-invasive diagnosing of coronary artery disease
First Claim
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1. A diagnostic tool for detecting an obstruction in a coronary artery, the diagnostic tool comprising:
- a plurality of passive, non-invasive acoustic sensors and an electrical sensor;
a data storage unit adapted to store information relating to locations of the acoustic sensors with respect to at least one anatomical feature of a patient; and
a signal processor adapted to receive and process signals corresponding to a heart beat when the plurality of acoustic sensors and the electrical sensor are attached to the chest of the patient, the signal processor further adapted to receive and process the information relating to locations of the acoustic sensors on the chest of the patient;
the signal processor being programmed to conduct a wavelet transform on the signals, the wavelet transform providing at least one of a frequency analysis and a time domain analysis for the signals, andthe signal processor being programmed to identify a diastolic portion of the signals for a plurality of heart-beats, to process information relating to the wavelet transform of the signals, and to determine the severity and the location of an obstruction in a coronary artery, wherein the location of the obstruction is determined at least in part from information relating to the wavelet transform of the signals and the stored information relating to locations of the acoustic sensors.
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Abstract
A non-invasive diagnostic tool and method for detecting an obstruction in a coronary artery, the diagnostic tool including a signal processor adapted to receive signals corresponding to a heart beat from a plurality of acoustic sensors attached to the chest of a patient. The signal processor is programmed to identify a diastolic portion of the signals for a plurality of heartbeats and conduct a wavelet transform analysis on the diastolic signals for determining the existence of, as well as the severity and the location of, an obstruction in a coronary artery of the patient.
73 Citations
32 Claims
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1. A diagnostic tool for detecting an obstruction in a coronary artery, the diagnostic tool comprising:
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a plurality of passive, non-invasive acoustic sensors and an electrical sensor; a data storage unit adapted to store information relating to locations of the acoustic sensors with respect to at least one anatomical feature of a patient; and a signal processor adapted to receive and process signals corresponding to a heart beat when the plurality of acoustic sensors and the electrical sensor are attached to the chest of the patient, the signal processor further adapted to receive and process the information relating to locations of the acoustic sensors on the chest of the patient; the signal processor being programmed to conduct a wavelet transform on the signals, the wavelet transform providing at least one of a frequency analysis and a time domain analysis for the signals, and the signal processor being programmed to identify a diastolic portion of the signals for a plurality of heart-beats, to process information relating to the wavelet transform of the signals, and to determine the severity and the location of an obstruction in a coronary artery, wherein the location of the obstruction is determined at least in part from information relating to the wavelet transform of the signals and the stored information relating to locations of the acoustic sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification