Method and apparatus for monitoring and diagnosing hypertension and congestive heart failure

Patent 4899758 Issued on February 13, 1990. Estimated Expiration Date:

August 2, 2008. 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

System for determining characteristics of blood flow
Patent #: 4562843
Issued on: 01/07/1986
Inventor: Djordjevich , et al.

Apparatus for the diagnosis of heart conditions Patent #: 4592364
Issued on: 06/03/1986
Inventor: Pinto

Inventors

Assignee

Regents of the University of Minnesota

Application

No. 228820 filed on 08/02/1988

US Classes:

600/485Measuring pressure in heart or blood vessel

Examiners

Primary: Jaworski, Francis J.

Attorney, Agent or Firm

Merchant, Gould, Smith, Edell, Welter & Schmidt

International Class

A61B 005/02

Abstract

Apparatus and method for monitoring and diagnosing CHF and hypertension includes digitizing brachial artery pulses and determining C2 from modified Windkessel model. CHF and hypertension are monitored and diagnosed by tracking C2 values and testing values against a disease discriminating threshold of 0.08 ml/mm Hg.

Other References

Walsh, T. J., "Computer Analysis of Continuously Recorded BP in Ambulant Hypertensives", Computers in Cardiology Conf. 12-14 Sep. 1978, Hanford Col. pp. 39-46
Milnor, W. R. et al., "A New Method of Measuring Propogation Coefficients & Char. Impedance in Blood Vessels", Circulation Research, vol. 36, May 1975, No. 5, pp. 631-639
Finkelstein et al. "Vascular Hemodynamic Impedance in CHF", Amer. Jrnl of Cardiology, vol. 55, pp. 423-427 (1985)
Finkelstein, S. Mietal, "Vascular Compliance in CHF", Proc. 7th Annual Conf. of IEEE Engrg in Medicine & Biol., pp. 550-553 (Sep. 27-30, 1985)
Goldwyn, R. et al., "Arterial Pressure Pulse Contour Analysis Via a Mathematical Model for the Clinical Quantification of Human Vascular Properties", Trans. BME, vol. 14, No. 1, Jan. 1967, pp. 11-20
Blanche, T. B. et al., "Patient Monitoring Enhanced by New Central Station", H P Jrnl., vol. 31, No. 11, Nov. 1980 pp. 3-1