Direct readout real time physiological parameter analog computer
First Claim
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1. An improved physiological parameter analog computer for displaying components of measured pulsatile flow comprising:
- first means receiving a pulsatile wave form signal representing said flow;
second frequency selection amplifier means passing frequency components of said signal above a predetermined frequency level;
third means stabilizing signals received from said second means relative to a known baseline reference voltage;
fourth means detecting each pulsatile impluse wave form from said third means and producing a single output pulse therefrom;
fifth means providing a measured time interval;
sixth means performing a voltage summation time derivative measurement during said time interval;
seventh counter/means counting the number of pulsatile impulses occurring during said measured time interval; and
eighth means multiplying the output of said seventh means by the output of said sixth means; and
ninth means displaying the output of said eighth means.
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Abstract
A medical electronic diagnostic device particularly suitable for determining and displaying segmental pulsatile flow of a patient. Means are provided for stabilization of a calibrated segmental volume time curve relative to a baseline, so as to eliminate the effect of patient movement during testing, as well as miscellaneous electrical noise. The disclosed device is capable, in addition to displaying a pulse volume curve, of measuring and recording the pulsatile component of the total blood flow.
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3 Claims
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1. An improved physiological parameter analog computer for displaying components of measured pulsatile flow comprising:
- first means receiving a pulsatile wave form signal representing said flow;
second frequency selection amplifier means passing frequency components of said signal above a predetermined frequency level;
third means stabilizing signals received from said second means relative to a known baseline reference voltage;
fourth means detecting each pulsatile impluse wave form from said third means and producing a single output pulse therefrom;
fifth means providing a measured time interval;
sixth means performing a voltage summation time derivative measurement during said time interval;
seventh counter/means counting the number of pulsatile impulses occurring during said measured time interval; and
eighth means multiplying the output of said seventh means by the output of said sixth means; and
ninth means displaying the output of said eighth means. - View Dependent Claims (2, 3)
- first means receiving a pulsatile wave form signal representing said flow;
Specification