Surgery – Diagnostic testing – Cardiovascular
Reexamination Certificate
2006-10-31
2006-10-31
Marmor, II, Charles A (Department: 3735)
Surgery
Diagnostic testing
Cardiovascular
C600S481000
Reexamination Certificate
active
07128714
ABSTRACT:
A non-contact method and apparatus for continuously monitoring a physiological event in a human or animal, such as blood pressure, which involves utilizing a laser-based interferometer system to produce a waveform that is representative of continuous blood pressure in a subject. The invention may preferably utilize a laser Doppler vibrometer which is oriented to produce a laser beam directed toward the subject substantially perpendicular to a skin surface of the subject wherein the skin surface is moveable in response to blood pressure. The vibrometer is sensitive to motion of the skin surface in a direction parallel to the laser beam and produces a signal representative of this motion. By plotting the velocity of the skin surface movement in the direction parallel to the laser beam with respect to time, a waveform is produced that has been found to be representative of the blood pressure waveform and highly defined to thereby permit accurate timing analysis thereof relating to cardiac cycles.
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Antonelli Lynn T.
Lomba John F.
Ohley William J.
Kasischke James M.
Marmor II Charles A
Nasser Jean-Paul A.
Stanley Michael P.
The United States of America as represented by the Secretary of
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