Surgery – Truss – Pad
Patent
1996-08-28
1997-11-25
Kamm, William E.
Surgery
Truss
Pad
A61B 50402
Patent
active
056901186
ABSTRACT:
In a method for correcting for non-physiological variations in ECG signals, signals recorded during a heartbeat, or a characteristic part of a heartbeat, are conditioned and digitized. Signal samples are stored in the form of an m.times.p matrix, where m is the number of samples and p is the number of leads used from measuring electrodes applied to the patient. The difference between this measuring matrix and a reference matrix is minimized by performing one or more of the operations translation, time synchronization, rotation and scaling of the measuring matrix. An apparatus for correcting for non-physiological variations in ECG signals includes a stage for conditioning signals, picked up by measuring electrodes applied to the patient, an A/D converter for digitizing the signals and a calculation unit. The calculation unit includes a storage unit for storing signal samples in the form of a m.times.p matrix, where m is the number of samples and p is the number of leads used from measuring electrodes applied to the patient, and for storing a reference matrix. The calculation unit is arranged to minimize the difference between the measuring matrix, formed from signal samples, and the reference matrix by one or more of the operations of translation, time synchronization, rotation and scaling of the measuring matrix.
REFERENCES:
patent: 5092341 (1992-03-01), Keler
patent: 5188116 (1993-02-01), Pommrehn et al.
patent: 5348020 (1994-09-01), Hutson
patent: 5381803 (1995-01-01), Herleikson et al.
patent: 5421342 (1995-06-01), Mortara
patent: 5433208 (1995-07-01), Lundstrom et al.
patent: 5469856 (1995-11-01), Lundstrom et al.
Kung et al, "A Frobenius Approximation Reduction Method (FARM) for Determining Optimal Number of Hidden Units," International Joint Conference On Neural Networks, Seattle, Washington, Jul. 8-14, 1991, pp. II-163--II-168.
Kyrkos et al, "QRS Detection Through Time Recursive Prediction Techniques," Signal Processing, vol. 15, No. 4, Dec. 1988, pp. 429-436.
Pahlm et al, "Data Processing of Exercise ECGs," IEEE Transactions on Biomedical Engineering, vol. BME-34, pp. 158-165, Feb. 1987.
Cruts et al, "Arrhythmia typification in a Real-Time Analysis System for Monitoring Geriatric Patients during Exercises," IEEE Proceedings from the Conference on Computers in Cardiology 1985, pp 423-426.
Alste et al, "Beat-to-Beat Analysis of Waveshape and Rhythm in XECG Using Inner Vector Product Hardware," IEEE Proceedings from the Conference on Computers in Cardiology 1982, pp. 355-358.
Rubel et al, "Methodology of ECG Interpretation in the Lyon Program", Meth. Inform. Med., vol. 29, No. 4, pp. 393-402, 1990.
Fayn et al, "Quantitative Assessment of Beat-to-Beat Variability in Ambulatory ECGT Recordings".
Rubel et al., "New Strategies in Serial ECG Comparison and Trend Analysis", Computer ECG Analysis: Towards Standardization, Elsevier Science Publishers B.V. (North-Holland), pp. 323-328, 1986.
Ben-Haim et al, "Beat-to-Beat Morphologic Variability of the Electrocardiogram for the Evaluation of Chest Pain in the Emergency Room," Am. J. Cardiol. 70, pp. 1139-1142. 1992.
Shaw et al, "On the Detection of QRS Variations in the ECG", IEEE Transactions on Biomedical Engineering, vol. 42, No. 7, pp. 736-741, Jul. 1995.
Sornmo, "A Model-Based Approach to QRS Delineation", Computers and Biomedical Research, vol. 20, pp. 526-542, 1987.
Golub et al, "Matrix Computations", The Johns Hopkins University Press, 1989, Chapter 12.4, pp. 581-587.
Sornmo, "Time-Varying digital filtering of ECG Baseline Wander", Medical & Biological Engineering & Computing, vol. 31, pp. 503-508, 1993.
Karlsson Peter
Lundstrom Lena
Sornmo Leif
Evanisko George R.
Kamm William E.
Siemens Elema AB
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