Single or multi-mode cardiac activity data collection,...

Details Single or multi-mode cardiac activity data collection,... Single or multi-mode cardiac activity data collection,...

2006-05-09

2006-05-09

Jastrzab, Jeffrey R. (Department: 3762)

Surgery

Diagnostic testing

Cardiovascular

C600S512000, C600S528000

Reexamination Certificate

active

07043292

ABSTRACT:
The method of presenting concurrent information about the electrical and mechanical activity of the heart using non-invasively obtained electrical and mechanical cardiac activity data from the chest or thorax of a patient comprises the steps of: placing at least three active Laplacian ECG sensors at locations on the chest or thorax of the patient; where each sensor has at least one outer ring element and an inner solid circle element, placing at least one ultrasonic sensor on the thorax where there is no underlying bone structure, only tissue, and utilizing available ultrasound technology to produce two or three-dimensional displays of the moving surface of the heart and making direct measurements of the exact sites of the sensors on the chest surface to determine the position and distance from the center of each sensor to the heart along a line orthogonal to the plane of the sensor and create a virtual heart surface; updating the measurements at a rate to show the movement of the heart's surface; monitoring at each ultrasonic sensor site and each Laplacian ECG sensor site the position and movement of the heart and the passage of depolarization wave-fronts in the vicinity; treating those depolarization wave-fronts as moving dipoles at those sites to create images of their movement on the image of the beating heart's surface; and, displaying the heart's electrical activity on the dynamically changing image of the heart's surface with the goal to display an approximation of the activation sequence on the beating virtual surface of the heart

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W.G. Besio, C.C. Lu and P. P. Tarjan, “A Feasibility Study for Body Surface Cardiac Propagation Maps of Humans from Lapacian Moments of Activation”,Electromagnetics, 21:621-632, 2001.
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G.E. Antonioli, P.P. Tarjan, C.C. Lu, T. Toselli and M.S. Argnani, “Non-Invasive Detection of Moment of Activation Using Laplacian Cardiac Electrogram Body Surface Mapping System”,Jun. 1999 article from Progress in Biomedical Research, pp. 382-387.
M.S. Argnani, MD, G.E. Antonioli, MD, C.C. Lu and P.P. Tarjan, PhD, “First Clinical Series with Laplacian Electrograms with Active Concentric Ring Sensors”,HeartWeb vol.4 No. 3 Jan. 1999, pp. 1-6.
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