Non-invasive monitoring of hemodynamic parameters using impedanc

Surgery – Truss – Pad

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

A01B 50295

Patent

active

056853165

ABSTRACT:
A method and apparatus for determination of heart rate, heart stroke volume, and cardiac output from thoracic bioimpedance signals. A unique bioimpedance electrode arrangement is employed, and the bioimpedance signals are corrected for gain-phase-frequency distortion through the use of sinusoidal test signals through the measuring or detection electrodes to identify distortions and correct for same during actual measurements. Time-derivative bioimpedance signals are employed, the power spectrum calculated, and a novel autoconvolution procedure used to emphasize the heart rate harmonic. Breath waves and other signals not indicative of the patient's cardiocycles are removed. Left ventricular ejection time is derived from the bioimpedance signals, and an improved version of Kubicek's equation is employed to derive heart stroke volume and thus cardiac output.

REFERENCES:
patent: 4450527 (1984-05-01), Sramek
patent: 4458694 (1984-07-01), Sollish et al.
patent: 4807638 (1989-02-01), Sramek
patent: 4836214 (1989-06-01), Sramek
patent: 4854327 (1989-08-01), Kunig
patent: 4953556 (1990-09-01), Evans
patent: 5046502 (1991-09-01), Kunig
patent: 5261411 (1993-11-01), Hughes
patent: 5265615 (1993-11-01), Frank et al.
patent: 5309917 (1994-05-01), Wang et al.
patent: 5402795 (1995-04-01), Reichl
patent: 5406955 (1995-04-01), Bledsoe et al.
patent: 5423326 (1995-06-01), Wang et al.
patent: 5503157 (1996-04-01), Sramek
patent: 5505209 (1996-04-01), Reining
Arinchin, V.I. et al. "Taking Into Account Electrical Resistance of Blood Will Increase Accuracy of Chest Tetrapolar Rheography Method", Pediatric(SU Journal), 1987, N7, p. 59-62.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Non-invasive monitoring of hemodynamic parameters using impedanc does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Non-invasive monitoring of hemodynamic parameters using impedanc, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Non-invasive monitoring of hemodynamic parameters using impedanc will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-1221726

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.