Method and apparatus for mathematical characterization of the electrocardiogram

Patent 4736295 Issued on April 5, 1988. Estimated Expiration Date:

April 5, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3442264

3504164

3609319

3634661

3858034

3860803

3882304

Apparatus for measuring the frequency of cardiac pulses
Patent #: 4022192
Issued on: 05/10/1977
Inventor: Laukien

4090505

Fail safe detector in a cardiac monitor
Patent #: 4115864
Issued on: 09/19/1978
Inventor: Vick , et al.

More ...

Inventors

Application

No. 06/654555 filed on 09/26/1984

US Classes:

600/523, Signal display or recording379/106.02Patient monitoring

Examiners

Primary: Shaw, Clifford C.
Assistant: Donovan, Lincoln

Attorney, Agent or Firm

Cushman, Darby & Cushman

International Class

G06F 17/00 (20060101)

Abstract

Strategic points on an input waveform are selected and a continuous trace is then laid through the sequence of points by an interpolation method, known as the spline function, to reconstruct the original waveform with high fidelity. One application of the present apparatus is in the reconstruction of an electrocardiographic trace.

Other References

B Carnahan et al., "Interpolation and Approximation", in: Applied Numerical Methods, p. 63, (John Wiley & Sons, Inc., N.Y., 1969)
T. N. E. Greville, "Spline Functions, Interpolation, and Numerical Quadrature", from: Mathematical Methods for Digital Computers, vol. II, pp. 152-168, A. Ralston & H. S. Wilf, eds., (John Wiley & Sons, Inc., N.Y., 1967)