Optical and ultrasound probe for monitoring blood volume...

Details Optical and ultrasound probe for monitoring blood volume... Optical and ultrasound probe for monitoring blood volume...

2004-05-19

2009-10-27

Jaworski, Francis J. (Department: 3768)

Surgery

Diagnostic testing

Detecting nuclear, electromagnetic, or ultrasonic radiation

C322S066000

Reexamination Certificate

active

07608043

ABSTRACT:
An apparatus and method to assess the compressibility, density, and hematocrit of blood including an optical ultrasound probe clipped onto tubing in which blood is flowing. The probe includes a combination of ultrasound transducers, a light emitting diode, and photodiodes. An indicator medium is injected into the bloodstream of the subject over one or more time points. Ultrasound waves are emitted by a transducer and received by another transducer, and a novel signal-processing unit and a computer with a novel computation scheme process the ultrasound signals to assess the phase shift of ultrasound as it transmitted across the blood stream.

REFERENCES:
patent: 6485427 (2002-11-01), Lee et al.
patent: 6740036 (2004-05-01), Lee et al.
patent: 2004/0087860 (2004-05-01), Lee et al.

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