Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation
Reexamination Certificate
2005-04-26
2005-04-26
Imam, Ali (Department: 3737)
Surgery
Diagnostic testing
Detecting nuclear, electromagnetic, or ultrasonic radiation
Reexamination Certificate
active
06884218
ABSTRACT:
A method of determining an ischemic event includes the steps of: monitoring and storing an initial electrocardiogram vector signal (x, y, z) of a known non-ischemic condition over the QRS, ST and T wave intervals; calculating and storing a J-point of the vector signal and a maximum magnitude of a signal level over the T wave interval; monitoring a subsequent electrocardiogram vector signal over the QRS, ST and T wave intervals; measuring and storing the magnitude (Mag.) of the vector difference between a subsequent vector signal and the initial vector signal; measuring and storing the angle (Ang.) difference between a subsequent vector and the initial vector at points; regressing a line from points about 25 milliseconds prior to the J point and about 60 milliseconds after the J-point and determining the slope of the regression line and the deviation of the angle difference of the regression line; regressing a line from points about 100 milliseconds prior to the maximum magnitude of the signal level over the T wave interval and determining the slope of the regressing line and the deviation of the angle difference of the regression line; and comparing the slope and deviation of the lines from the J point and the T wave interval to a set of known values to determine the presence of an ischemic event.
REFERENCES:
patent: 3186403 (1965-06-01), Bassett
patent: 3333580 (1967-08-01), Fawcett
patent: 3710174 (1973-01-01), Cerniglia, Jr.
patent: 3816849 (1974-06-01), Kinoshita et al.
patent: 4136690 (1979-01-01), Anderson et al.
patent: 4175337 (1979-11-01), Benjo
patent: 4292977 (1981-10-01), Krause et al.
patent: 4478223 (1984-10-01), Allor
patent: 4528988 (1985-07-01), Wong
patent: 4537202 (1985-08-01), Mancini et al.
patent: 4587976 (1986-05-01), Schmid et al.
patent: 4697597 (1987-10-01), Sanz et al.
patent: 4700712 (1987-10-01), Schmid
patent: 4850370 (1989-07-01), Dower
patent: 4898181 (1990-02-01), Kessler
patent: 4922920 (1990-05-01), Thie et al.
patent: 4949725 (1990-08-01), Raviv et al.
patent: 5046504 (1991-09-01), Albert et al.
patent: 5101833 (1992-04-01), Schmid
patent: 5227307 (1993-07-01), Bar-Or et al.
patent: 5284152 (1994-02-01), Portnuff et al.
patent: 5458116 (1995-10-01), Egler
patent: 5544656 (1996-08-01), Pitsillides et al.
patent: 5782773 (1998-07-01), Kuo et al.
patent: 5803084 (1998-09-01), Olson
patent: 6039690 (2000-03-01), Holley et al.
patent: 6132373 (2000-10-01), Ito et al.
patent: 0 383 697 (1990-08-01), None
patent: 0 674 873 (1995-10-01), None
PCT/US98/18557 International Search Report.
Carter DeLuca Farrell & Schmidt LLP
Imam Ali
LandOfFree
Three dimensional vector cardiograph and method for... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three dimensional vector cardiograph and method for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three dimensional vector cardiograph and method for... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3396467