Surgery – Truss – Pad
Patent
1994-03-28
1996-10-15
Sykes, Angela D.
Surgery
Truss
Pad
128666, 128691, A61B 500
Patent
active
055644180
ABSTRACT:
Perform measurement of blood flow using physiological salt solution, which is harmless to living objects, as a tracer. The head portion (4) of a subject is alternately irradiated with laser light 1, and laser light 2. The light exiting from the head portion (4) is detected and converted to an electric signal. By performing a first calculation on this electric signal, a CPU (1) outputs a signal representing the change in concentration of hemoglobin in the head (4). Further, a second calculation process is performed on the electric signal which represents changes in concentration of hemoglobin generated by injection of the physiological salt solution. At least one of the blood flow or the absolute concentration of oxyhemoglobin and deoxyhemoglobin is displayed. Because a material safe to living objects is used as the tracer, measurement of the blood flow can be safely and repeatedly performed.
REFERENCES:
patent: 4281645 (1981-08-01), Jobsis
patent: 5101825 (1992-04-01), Gravenstein et al.
patent: 5103829 (1992-04-01), Suzuki et al.
patent: 5195963 (1993-03-01), Yafuso et al.
patent: 5282467 (1994-02-01), Piantadosi et al.
patent: 5383468 (1995-01-01), Nakayama et al.
J. P. P. M. De Vries et al "Continuous Measurement of Blood Volume during Hemodialysis by an Optical Method" ASAIO Transactions, vol. 38, No. 3 pp. 181-185, Jul. 1992.
M. Vegfors et al "Accuracy of pulse oximetry at various haematocrits and during haemolysis in an invitro model" Medical & Biological Engineering & Computing, vol. 31, No. 2 pp. 135-141, Mar. 1993.
Cotside Measurement of Cerebral Blood Flow in Ill Newborn Infants by Near Infrared Spectroscopy, A. D. Edwards et al., The Lancet, Oct. 1, 1988, pp. 770-771.
Quantification of Cerebral Oxygenation and Haemodynamics in Sick Newborn Infants by Near Infrared Spectrophotometry, J. S. Wyatt et al., The Lancet, Nov. 8, 1986, pp. 1063-1066.
Ozaki Takeo
Suzuki Susumu
Hamamatsu Photonics K.K.
Sykes Angela D.
LandOfFree
Diagnostic device for measuring information on blood in a living does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Diagnostic device for measuring information on blood in a living, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Diagnostic device for measuring information on blood in a living will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1238516