System and method for evaluating the circulatory system of a liv

Details System and method for evaluating the circulatory system of a liv System and method for evaluating the circulatory system of a liv

1997-06-03

1999-07-13

Nasser, Robert L.

Surgery

Diagnostic testing

Cardiovascular

600500, 600485, A61N 500

Patent

active

059219360

ABSTRACT:
A system that accurately evaluates a living subject's circulatory system, even if the living subject is taking high blood pressure medication includes a time-difference determining device that determines a time difference between predetermined periodic points on a subject's electrocardiographic waveform and predetermined periodic points on corresponding oscillatory pressure-pulse waves of the living subject. A strain application device applies a physical strain to the subject's body for a predetermined period of time so that the subject' blood pressure changes. A blood-pressure measurement device measures the subject's blood pressure while the subject's blood pressure is changing. A circulatory-system evaluation device determines a relationship between changes in the subject's blood pressure and corresponding time differences determined by the time-difference determining. The circulatory-system evaluation device evaluates the subject's circulatory system based on the hysteresis present in the relationship.

REFERENCES:
patent: 4432373 (1984-02-01), Ogawa et al.
patent: 4458690 (1984-07-01), O'Conner et al.
patent: 4649929 (1987-03-01), Weaver et al.
patent: 4677984 (1987-07-01), Sramek
patent: 5033472 (1991-07-01), Sato et al.
patent: 5054494 (1991-10-01), Lazzaro et al.
patent: 5103831 (1992-04-01), Niwa
patent: 5237997 (1993-08-01), Greubel et al.
patent: 5243990 (1993-09-01), Aung et al.
patent: 5291895 (1994-03-01), McIntyre
patent: 5564427 (1996-10-01), Aso et al.
patent: 5603329 (1997-02-01), Hosaka et al.
patent: 5671750 (1997-09-01), Shindoa
patent: 5743856 (1998-04-01), Oka et al.
patent: 5752920 (1998-05-01), Ogura et al.

Affiliated with

Also associated with

Rating

System and method for evaluating the circulatory system of a liv does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for evaluating the circulatory system of a liv, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for evaluating the circulatory system of a liv will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2271241