Method of examining the hemodynamic system of a human body
First Claim
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1. THE METHOD OF EXAMINING THE HEMODYNAMIC SYSTEM OF A HUMAN BODY, COMPRISING THE STEPS OF:
- (A) ILLUMINATING AT EACH OF A PLURALITY OF DIFFERENT POSITIONS ON THE BODY, A LIMITED PERIPHERAL SURFACE AREA THEREOF, (B) DETECTING AT EACH OF SAID POSITIONS ONLY THE LIGHT REFLECTED FROM THE ILLUMINATED AREA TO PRODUCE A PULSATORY VOLTAGE WHICH VARIES IN ACCORDANCE WITH THE EXPANDING AND CONTRACTING BLOOD VOLUME IN THE ILLUMINATED AREA, WHEREBY THE PULSE RATE OF THE VOLTAGE IS THE SAME AT EACH OF SAID POSITIONS, BUT THE WAVE FORM OF THE VOLTAGE BEING DIFFERENT AT EACH OF SAID POSITIONS, AND (C) DISPLAYING THE WAVE FORM OF THE PULSATORY VOLTAGES OBTAINED AT SAID POSITIONS TO PRODUCE A PATTERN OF WAVE FORMS INDICATIVE OF THE CONDITION OF SAID BODY.
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1 Claim
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1. THE METHOD OF EXAMINING THE HEMODYNAMIC SYSTEM OF A HUMAN BODY, COMPRISING THE STEPS OF:
- (A) ILLUMINATING AT EACH OF A PLURALITY OF DIFFERENT POSITIONS ON THE BODY, A LIMITED PERIPHERAL SURFACE AREA THEREOF, (B) DETECTING AT EACH OF SAID POSITIONS ONLY THE LIGHT REFLECTED FROM THE ILLUMINATED AREA TO PRODUCE A PULSATORY VOLTAGE WHICH VARIES IN ACCORDANCE WITH THE EXPANDING AND CONTRACTING BLOOD VOLUME IN THE ILLUMINATED AREA, WHEREBY THE PULSE RATE OF THE VOLTAGE IS THE SAME AT EACH OF SAID POSITIONS, BUT THE WAVE FORM OF THE VOLTAGE BEING DIFFERENT AT EACH OF SAID POSITIONS, AND (C) DISPLAYING THE WAVE FORM OF THE PULSATORY VOLTAGES OBTAINED AT SAID POSITIONS TO PRODUCE A PATTERN OF WAVE FORMS INDICATIVE OF THE CONDITION OF SAID BODY.
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Current AssigneeBernard M. Teschner
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Original AssigneeBernard M. Teschner
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InventorsTeschner, Bernard M.
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Application NumberUS04/199,494Time in Patent Office1,334 DaysField of SearchUS Class Current600/479CPC Class CodesA61B 5/02416 using photoplethysmograph s...
