Three dimensional vector cardiographic display and method for displaying same

• US 5,803,084 A
• Filed: 12/05/1996
• Issued: 09/08/1998
• Est. Priority Date: 12/05/1996
• Status: Expired due to Term

• Current Assignee: Ecg-Tech Corporation
• Original Assignee: Charles Olson
• Inventors: Olson, Charles
• Primary Examiner(s): Jastrzab, Jeffrey R.
• Application Number:
  US08/760,986
• Time in Patent Office: 642 Days
• Field of Search: 128/696, 128/699, 128/710
• US Class Current: 600/512
• CPC Class Codes: A61B 5/339 Displays specially adapted therefor
• CPC Class Codes: A61B 5/341 Vectorcardiography [VCG]

Abstract

A cardiographic display for displaying an electrocardiograph heart signal in vector format within a single three-dimensional coordinate system sampled at incremental time intervals and combining the above vector display on the same screen with other displays, e.g., a 12-Lead display. Other embodiments of the present invention comprise projecting the results of the heart vectors onto three planes of the coordinate system which represent the frontal, transverse and sagittal planes while simultaneously displaying the three-dimensional vector display. Still other embodiments comprise combining the three-dimensional with various graphs which show the various changes in magnitude and angle between the heart vectors.

Claims

1. A cardiographic display for displaying an electrocardiograph heart signal having a magnitude and location in vector format within a single three-dimensional coordinate system sampled at incremental time intervals, comprising:

a point of origin;

a three-dimensional coordinate system comprising an x-axis, a y-axis and a z-axis extending from said point of origin;

a frontal plane defined by the area between said x-axis and said y-axis;

a sagittal plane defined by the area between said z-axis and said y-axis;

a transverse plane defined by the area between said x-axis and said z-axis; and

means for displaying the magnitude and location of said signal within said coordinate system at incremental time intervals using a plurality of vectors, said vectors emanating from said origin.

2. A cardiographic display according to claim 1 wherein each said vector has a terminal point and said cardiographic display further comprises means for simultaneously projecting the terminal point of a plurality of said vectors in at least one plane.

3. A cardiographic display according to claim 2 wherein said projecting means projects the terminal point of a plurality of said vectors in each said plane.

4. A cardiographic display according to claim 3 further comprising means for distinguishing said vectors at different time intervals.

5. A cardiographic display according to claim 4 wherein said distinguishing means comprises means for changing the color of said vectors over said different time intervals.

6. A cardiographic display according to claim 2 further comprising means for displaying a T-wave and means for projecting a terminal point of said T-wave in at least one plane.

7. A cardiographic display according to claim 6 further comprising means for displaying a T-vector and means for projecting a terminal point of said T-vector in at least one plane.

8. A cardiographic dieplay according to claim 2 further comprising means for displaying a QRS-vector and means for projecting a terminal point of said QRS-vector in at least one plane.

9. A cardiographic display according to claim 2 further comprising means for displaying a P-wave and means for projecting a terminal point of said P-wave in at least one plane.

10. A cardiographic display according to claim 2 further comprising means for displaying an angle between a QRS vector and a T-vector.

11. A cardiographic display according to claim 1 further comprising means for displaying a change in magnitude between said plurality of said vectors.

12. A cardiographic display according to claim 1 further comprising means for displaying a change in angle between said plurality of sai(i vectors.

13. A cardiographic display according to claim 1 further comprising means for displaying a magnitude of said plurality of vectors.

14. A cardiographic display according to claim 1 further comprising means fcr displaying an off-set from the beginning of an ST segment using an ST vector, said displaying means for displaying said off-set emanating from said origin.

15. A cardiographic display according to claim 1 wherein said means for displaying further comprises means or displaying at least one Lead simultaneously with said cardiographic display.

16. A cardiographic display according to claim 1 wherein said means for displaying further comprises means for rotating said cardiographic display and said coordinate system.

17. A cardiographic display according to claim 1 wherein said means for displaying further comprises means for magnifying a particular area of said cardiographic display.

18. A cardiographic display according to claim 1 further comprising means for selectively changing said incremental time intervals.

19. A cardiographic display according to claim 1 wherein the change in magnitude and location between at least two successive vectors is distinguished.

20. A cardiographic display for displaying an electrocardiograph heart signal having a magnitude and location in vector format within a single three-dimensional coordinate system sampled at incremental time intervals, comprising:

a point of origin;

a three-dimensional coordinate system comprising an x-axis, a y-axis and a z-axis extending from said point of origin;

a frontal plane defined by the area between said x-axis and said y-axis;

a sagittal plane defined by the area between said z-axis and said y-axis;

a transverse plane defined by the area between said x-axis and said z-axis; and

means for simultaneously displaying the magnitude and location of said signal within said coordinate system at incremental time intervals using a plurality of vectors, the change in magnitude between said plurality of said vectors and at least one Lead.

21. A cardiographic display according to claim 20 wherein said means for displaying further comprises means for displaying the changes in magnitude the magnitude of said plurality of vectors.

22. A cardiographic display for displaying an electrocardiograph heart signal in vector format within a single three-dimensional coordinate system sampled at incremental time intervals, comprising:

a point of origin;

a three-dimensional coordinate system comprising an x-axis, a y-axis and a z-axis extending from said point of origin;

a frontal plane defined by the area between said x-axis and said y-axis;

a sagittal plane defined by the area between said z-axis and said y-axis;

a transverse plane defined by the area between said x-axis and said z-axis; and

means for displaying the magnitude and location of said signal within said coordinate system at incremental time intervals using a plurality of vectors;

means for displaying a P-wave; and

means for projecting a terminal point of said P-wave in at least one plane.

23. A method for displaying an electrocardiograph heart signal having a magnitude and location in vector format within a single three-dimensional coordinate system sampled at incremental time intervals, comprising the steps of:

displaying a point of origin;

displaying a three-dimensional coordinate system comprising an x-axis, a y-axis and a z-axis extending from said point of origin which defines a frontal plane located between said x-axis and said y-axis, a sagittal plane located between said z-axis and said y-axis, and a transverse plane located between said x-axis and said z-axis; and

displaying the magnitude and location of said signal within said coordinate system at incremental time intervals using a plurality of vectors.