Vector ECG instrument and carrying out method thereof

A technology of electrocardiograph and implementation method, which is applied in the fields of instruments, diagnostic recording/measurement, medical science, etc., and can solve the problems that electrocardiograms cannot be converted to each other, lead systems are different, and it is difficult to improve diagnostic sensitivity, specificity, and accuracy. , to achieve the effect of improving the diagnostic level of electrocardiology and correcting wrong ideas

Inactive Publication Date: 2007-08-08
北京东方中原数码科技有限公司
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AI Technical Summary

Problems solved by technology

[0004] In order to overcome the deficiencies of the traditional technical structure, for example: the lead system of the traditional electrocardiogram and vector heart diagram is different, and it cannot be compared with the same source, but can only be compared; it is limited to teaching to explain that the electrocardiogram is produced by the secondary projection of the vector heart diagram The concept is not only of little practical value, but also easily misleading; the traditional ECG cannot be converted in one, two, and three-dimensional spaces, and it is difficult to improve the sensitivity, specificity and accuracy of diagnosis; the advantage of the traditional ECG is only the linearity in the time domain. Expression, the lack of expression of plane and three-dimensional methods in the spatial domain, making the diagnosis result subjective, one-sided, and empirical; the traditional electrocardiogram with more than 10 electrode wires and more than 18 leads is far more than that generated by 7 electrode wires 54-lead vector electrocardiogram is complicated; etc.

Method used

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  • Vector ECG instrument and carrying out method thereof
  • Vector ECG instrument and carrying out method thereof
  • Vector ECG instrument and carrying out method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1: A vector electrocardiograph, 16 electrode wires / 15 channels, space-time domain. Real-time homologous simultaneous conversion observation and tracing of 1D, 2D and 3D ECG.

[0050] 16 electrode lines, parallel 15-channel input Einthoven-Goldberger-Wilson and Frank lead system; 15 isolation stages; resistor network; 15-lead system; preamplifier; filter; secondary amplifier; photoelectric isolator; sample and hold device; analog-to-digital conversion (A / D); USB interface; PC computer; plotter or thermal recorder.

[0051] The signal processing unit includes:

[0052] Perform spatial domain processing on each heart vector signal output by the electrical signal acquisition device, including a three-dimensional heart vector model composed of three mutually perpendicular intersections of X, Y, and Z, and draw the corresponding trajectory curve through the output device A heart vector three-dimensional space processing unit;

[0053] Perform plane processing on...

Embodiment 2

[0064] As shown in Figure 3, the lead of the vector electrocardiogram is a virtual lead realized by computer software. Each virtual lead has a plane attribute, an angle attribute and after determining the direction of the lead, the computer can calculate and trace the corresponding electrocardiogram according to the lead axis.

[0065] The virtual lead axis provided by this system is to set 0 to 18 lead axes within the range of 0 to 360 degrees on the frontal plane, transverse plane and side surface respectively. There are 54 virtual lead axes on the three sides. The minimum degree between the lead shafts is 0.5 degrees, and the angle of each lead shaft can be set as required. The vector electrocardiogram (z-VECG) can display the tracing synchronously with the traditional 12-lead electrocardiogram (ECG), and can also observe the tracing synchronously with other two-dimensional or three-dimensional ECG.

Embodiment 3

[0067] The vector electrocardiograph also provides a teaching demonstration function module, which is helpful to understand the interrelationship between the first, second and three-dimensional electrocardiograms. For example: Figure 4. Shows the vector ECG generated when the frontal mid-lead axis angle is 30°. Figure 5 is a demonstration of the instantaneous generation of a horizontal multi-lead vector ECG, which is a dynamic display process for a cardiac cycle, that is, from the beginning (starting point) of the plane VCG to the end (end point). While depicting point by point along with the instantaneous time, each lead axis synchronously displays and depicts the corresponding vector electrocardiogram according to their respective angles in the coordinate system. Figure 6. The projection of the "lead free axis" is a way of displaying z-VECG in contrast to VCG. The free lead axis is a lead axis whose angle can be changed freely by the user. The axis is a vector line with a d...

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Abstract

The invention relates to a method for realizing vector electrocardiograph, which projects the solid heart vectors on the front, horizontal, and side three planes, to form a plane electrocardiograph vector diagram, and sets the projections of several virtual lines on different angles and three plant rings, to form the liner expressed vector electrocardiograph. The virtual lines have 0-18 axles in 0-360 degrees of each plane to generate total 54 vector electrocardiographs. The invention can generate 1-78 coupled synchronous and/or selective twelve electrocardiographs, vector electrocardiograph, time electrocardiograph, steering time electrocardiograph, continuous electrocardiograph, or the like, while it can synchronously switch between one-dimension, two-dimension and three-dimension electrocardiographs.

Description

technical field [0001] The invention relates to a vector electrocardiograph and a realization method, belonging to the field of medical diagnosis and teaching instruments. Background technique [0002] In 1903, the world's first electrocardiogram machine came out and it has been more than a hundred years. After the continuous efforts of Einthoven-Goldberger-Wilson and others, it has experienced the technological development stage of string type→coil rotation type→direct tracing type→cathode ray type→computer type. A set of theoretical theories expressed in a one-dimensional linear manner from the time domain has gradually been formed, which guides clinical, teaching and scientific research work so far. Later, people felt that this straight line method could not express the spatial relationship of the original three-dimensional electrocardiographic activity. In the 1950s, many scholars proposed more than 30 lead systems for space vector cardiograms. In 1956, the correction ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/0452G09B23/28
Inventor 赵峰
Owner 北京东方中原数码科技有限公司
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