Active pulse blood constituent monitoring method

Details Active pulse blood constituent monitoring method Active pulse blood constituent monitoring method

1997-04-17

1999-01-19

Bahr, Jennifer

Surgery

Diagnostic testing

Measuring or detecting nonradioactive constituent of body...

600310, 600316, A61B 500

Patent

active

058609199

ABSTRACT:
A monitoring method is disclosed which provides for inducing an active pulse in a blood volume of a patient. The induction of an active pulse results in a cyclic, and periodic change in the flow of blood through a fleshy medium under test. By actively inducing a change of the blood volume, modulation of the volume of blood can be obtained to provide a greater signal to noise ratio. This allows for the detection of constituents in blood at concentration levels below those previously detectable in a non-invasive system. Radiation which passes through the fleshy medium is detected by a detector which generates a signal indicative of the intensity of the detected radiation. Signal processing is performed on the electrical signal to isolate those optical characteristics of the electrical signal due to the optical characteristics of the blood.

REFERENCES:
patent: 3482565 (1969-12-01), Gowen
patent: 3704708 (1972-12-01), Iberall
patent: 3771857 (1973-11-01), Thomasson et al.
patent: 3914464 (1975-10-01), Thomasson et al.
patent: 3981568 (1976-09-01), Bartolomei
patent: 4406289 (1983-09-01), Wesseling et al.
patent: 4407290 (1983-10-01), Wilber
patent: 4883055 (1989-11-01), Merrick
patent: 4927264 (1990-05-01), Shiga et al.
patent: 4957371 (1990-09-01), Pellicori et al.
patent: 5077476 (1991-12-01), Rosenthal
patent: 5111817 (1992-05-01), Clark et al.
patent: 5200855 (1993-04-01), Meredith, Jr. et al.
patent: 5372136 (1994-12-01), Steuer et al.
patent: 5379774 (1995-01-01), Nishimura et al.
patent: 5398681 (1995-03-01), Kupershmidt
patent: 5416325 (1995-05-01), Buontempo et al.
patent: 5416579 (1995-05-01), Barshad et al.
patent: 5638816 (1997-06-01), Azarbayjany et al.
Landowne, Milton, "A Method Using Induced Waves to Study Pressure Propagation in Human Arteries", Circulation Research, Nov. 1957, pp. 594-601.
Squire, J.R., "An Instrument for Measuring the Quantity of Blood and Its Degree of Oxygenation in the Web of the Hand", Clinical Science, vol. 4, pp. 331-339, 1940.
Wood, Earl H. et al., "Photoelectric Determination of Arterial Oxygen Saturation in Man", Arterial Oxygen Saturation in Man, pp. 387-401, 1948.

Affiliated with

Also associated with

Rating

Active pulse blood constituent monitoring method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Active pulse blood constituent monitoring method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active pulse blood constituent monitoring method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1243325