easuring pulse or heart rate (A61B8/02)

A   Human necessities(312083)
A61B8/02                     easuring pulse or heart rate(39)

Device for control and prediction of condition of "mother-foetus" system in procces of obstetric aid // 2568254
FIELD: medicine.SUBSTANCE: invention relates to medical equipment, in particular to equipment for control and evaluation of condition of "mother-foetus" system in final phase of delivery. Device for control and prediction of condition of "mother-foetus" system in the process of obstetric aid consists of electrocardiographic channel (1) of foetus, electrohisterographic channel (9) of mother, echocardiographic channel (15) of foetus, electrocardiographic channel (22) of mother, electroencephalographic channel (28) of mother, channel of mother's respiratory system control (30), integral unit of alarm system (32) and information processing device (33). First inlet of information processing device (33) is connected to first outlet of electrocardiographic channel (1) of foetus, second inlet - to first outlet of echocardiographic channel (15) of foetus, third inlet - to third outlet of electrohisterographic channel (9) of mother, fourth inlet - to outlet of electroencephalographic channel (28) of mother, fifth inlet - to outlet of electrocardiographic channel (22) of mother, sixth and seventh inlets - to first and second outlets of channel of mother's respiratory system control (30) respectively, and its outlet by bus-bar is connected to unit of digital indication and recording (24).EFFECT: application of invention makes it possible to increase efficiency of control and correction of delivery process due to increase of reliability and veracity of evaluation of condition of both "mother-foetus" system as a whole and separate physiological systems of parturient woman.6 cl, 1 dwg

ethod and device for ultrasound-based recognising of movable anatomical structures // 2540169
FIELD: medicine.SUBSTANCE: invention refers to medical equipment, namely to movable anatomical structure recognisers, particularly for detecting foetal cardiac contractions. A method of recognising involves the stages of obtaining ultrasonic data comprising a Doppler shift of at least one anatomical structure, dividing the ultrasonic data by a number of time gaps, drawing a feature vector for each time gap, classifying each time gap with the use of the Doppler shift by recognising with the use of a pattern recognition modulus of at least one anatomical structure by means of the classification of each time gap. The substance is implemented by a recognition system comprising a microprocessor and integrated into a foetus monitor comprising an ultrasonic system with the use of an ultrasonic converter.EFFECT: using invention enables reducing risks of fault recognition of the movable anatomical structures inside a subject.13 cl, 5 dwg

Device, method and computer program for cardiac value measurement // 2539010
FIELD: medicine.SUBSTANCE: group of inventions refers to medicine. A device for cardiac value measurement comprises a catheter and the first measurement unit detecting the repeated local heartbeat within a readout point from a readout signal as the first cardiac value. The catheter comprises the first value readout unit for the heartbeat signal readout specifying the repeated local heartbeat within the heart readout. The first measurement unit is configured to determine the repeated local heartbeat rate and/or phase. A computer program for cardiac measurement is saved on machine-readable media and comprises a program control unit to command the computer executing the computer program to control the device for cardiac measurement.EFFECT: using the group of inventions provides more accurate cardiac measurement.12 cl, 11 dwg

ethod for determining human sleep phase favourable to awakening // 2522400
FIELD: medicine.SUBSTANCE: sleep pulse wave signal and limb movements are recorded with using a pulse wave sensor and an accelerometer fixed on a human body. RR intervals and a respiratory rate are measured on the basis of the pulse wave signal over the pre-set interval of time Δti. The derived values are used to determine mean - P1, minimum - P2, maximum - P3 RR intervals, mean square deviation of RR intervals - P4, mean respiratory rate - P5 and average quantity of limb movements - P6. The function F(Δti) is calculated: F(Δti)=-K1P1-K2P2-K3P3+K4P4+K5P5+K6P6, wherein K1-K6 are weight coefficients describing a contribution of the relevant parameter to the function F(Δti), and increments of the function F(Δti) shows the beginning and termination of a sleep phase favourable to awakening.EFFECT: method enables determining the sleep phase favourable to awakening by recording the diagnostic values.15 cl, 6 dwg, 2 tbl

Device for distance registration of processes of patient's heart beats and respiration // 2496410
FIELD: medicine.SUBSTANCE: invention relates to medical equipment and can be used in medical practice for distant registration of processes of patient's respiration and heart activity in real time. Device for distant registration of processes of patient's heart beats and respiration contains successively connected generator of harmonic fluctuations, power amplifier and irradiator in transmitting part, and narrow-band amplifier, measurer of phase shift and unit of separation of respiration and pulse constituents in receiving part. In transmitting part device is provided with second generator of harmonic fluctuations of another frequency and adder of signals of both generators, switched to irradiator, which simultaneously is receiver of reflected signal via key and power amplifier. In receiving part device is provided with first detector and in transmitting part with successively connected second detector, first extremator and gate former. In receiving part device is also provided with measurer of temporary intervals.EFFECT: application of the invention will make it possible to increase sensitivity and noise immunity.3 cl, 8 dwg

ethod of measuring heart rate in fetus // 2489968
FIELD: medicine.SUBSTANCE: invention relates to field of medicine. In method realisation probing by means of ultrasound signal, directed to area of fetus heart location, is carried out. Reflected Doppler signal is amplified and converted into digital form. Ultrasonic irradiation signal represents series of pulses, where frequency of their repetition equals carrier frequency of ultrasonic signal and is determined depending on maximal depth of probing. Amplification of signal is first performed in frequency band, consistent with duration of series of irradiation with discretisation frequency, corresponding to band of received signal. Transfer of Doppler signal spectrum on zero frequency and accumulation of complex signal counts in accordance with position and size of measured volume by probing depth are performed. Filtration of Doppler signal in specified frequency band is carried out. Search for peaks of autocorrelation function is carried out and distance between them is determined. Doppler shift is calculated on the basis of calculation of difference of phases between Doppler signals from successive series of ultrasound signal. Width of spectrum of Doppler frequencies and energy of Doppler signal from all sections of probing depth are evaluated. After that, control of parameters of Doppler signals from entire probing depth is performed, for which purpose separation of sections of probing depth, related to fetal heartbeats is carried out on the basis of the analysis of parameters of spectrum of Doppler frequencies. After that, adaptive reception gate for signal of fetal heartbeats is formed, in accordance with which the following corrected ultrasound signal is formed.EFFECT: invention makes it possible to increase accuracy of frequency of heart rate in fetus by automatic setting of position and value of measurement Doppler volume in accordance with fetus heart position by probing depth.4 dwg
ethod of estimating efficiency of intra-aortal balloon counterpulsation in case of cardiogenic shock // 2488353
FIELD: medicine.SUBSTANCE: invention relates to field of medicine, in particular to anesthesiology-critical care medicine, cardiosurgery and cardiology. Assessment of central hemodynamics and analysis of echocardiography data are carried out. Decision to stop auxiliary blood circulation is taken in case of absence of negative dynamics cardiac index higher than 2.2 l/min/m2, pressure of pulmonary artery jamming 16 mm Hg by data of echocardiography. By flowmetry data: variation coefficient is 4.5-6.5%, stunting index is 0.7-1.2, blood stream reserve is 1.5-3%.EFFECT: method makes it possible to monitor microhemodynamics indices, thus increasing efficiency of auxiliary blood circulation.2 ex
ethod of prediction of surgical effectiveness in myocardial revasculisation in patients suffering ischemic heart disease with high grade ventricular arrhythmias // 2479257
FIELD: medicine.SUBSTANCE: invention refers to medicine, specifically cardiology. The preoperative echocardiography, load treadmill test and Holter (ECG) monitoring are conducted. There are evaluated an anamnestic length of ischemic heart disease, a daily number of single ventricular ectopic beats, a circadian index, a left ventricular ejection fraction, a number of load stages, a rate pressure product, a maximum load heart rate as related to a maximum calculated heart rate. The derived values are used to predict the long-term combined anti-ischemic and antiarrhythmic surgical effectiveness in myocardial revasculisation (MR).EFFECT: method enables the preoperative prediction of the long-term combined anti-ischemic and antiarrhythmic surgical effectiveness in myocardial revasculisation (MR) that promotes an early case monitoring of the CHD patients suffering high grade ventricular arrhythmias, the choice of a therapeutic approach including as to the need of prescribing an antiarrhythmic therapy, interventions for the purpose of treating arrhythmia, and well-timed diagnosis of postoperative persistence and/or recurrence of myocardial ischemia and ventricular arrhythmia.4 ex

ethod of registering patient's breathing and heartbeat rhythms and device for its realisation // 2470581
FIELD: medicine.SUBSTANCE: invention relates to field of medicine. Method lies in irradiation of patient's body parts with the sum of two ultrasonic signals with differing frequencies. Current changes of phase shift between envelopes of transmitted and reflected signals, corresponding to vibrations of patient's body parts. As a result of processing of measurement results breathing and heartbeat rhythms are isolated in real time. Device for method realisation contains in transmitting part two generators, connected with two inlets of adder, whose outlet is connected to power amplifier with emitter. In receiving part device contains successively connected receiver, narrow-band amplifier and first detector, whose outlet is connected to second inlet of unit of phase shift measurement, as well as second detector, whose inlet is connected with outlet of transmitting part adder, and outlet is connected to first unit of phase shift measurement. Outlet of unit of phase shift measurement is connected with outlet of isolation of breathing and pulse constituents.EFFECT: invention makes it possible to increase sensitivity and noise immunity in registration of breathing and heartbeat rhythms.4 cl, 5 dwg

Device for non-invasive diagnostics of fetus state in antepartum period // 2428108
FIELD: medicine.SUBSTANCE: invention relates to medical equipment. Device contains ultrasound scanning sensor, connected to first inlet of US scanner. Device contains successively connected electrodes for registering abdominal ECG of pregnant woman and fetus, analogue-digital converter (ADC), filter, amplifier, device for displaying programme-apparatus complex (PAC) and device of coordination, whose outlet is connected with second inlet of US scanner. Operator is connected with control inlets of device of PAC displaying and US scanner.EFFECT: application of claimed device will make it possible to register ECG of pregnant women and fetuses with high resolution and will make it possible to carry out diagnostics of pregnant women at examination place.4 dwg

Ultrasonic diagnostic small-sized analyser to diagnose fetus condition in process of pregnancy // 2404710
FIELD: medicine.SUBSTANCE: invention relates to medical equipment. Analyser comprises driving oscillator connected to mixer and power amplifier, sensor with transmitting and receiving piezoelectric plates, low frequency amplifier, receiving signals from mixer and sending them further into primary processing device, display, sound loudspeaker or headphones to listen to patients' heart rates. Additionally it is equipped with secondary processing devices with program of analysis of recorded sequence of time intervals between beats of fetus heart, maintenance of date and time in process of work, volatile flash-memory to store results of examination of several patients, unit for indication of fetus condition in compliance with matrix of decision-making. Secondary processing device controls primary processing device, and indication unit is additionally equipped with sockets for connection to computer and automatic charging device, and also terminals for connection to processing, registration and charging unit (PRCU).EFFECT: using this analyser makes it possible to clearly listen to heartbeat of fetus, specific noise from blood flow in mother and fetus vessels at various stages of pregnancy.2 dwg

Device of non-invasive diagnostics of fetus cardiac activity and methods of its application // 2387370
FIELD: medicine.SUBSTANCE: inventions relate to medicine, namely to device and method for diagnostics of fetus state during pregnancy. Device contains successively connected electrodes for registering abdominal ECG, ADC, filter and amplifier, whose outlet is connected with unit of second derivative calculation and first inlet of unit of abdominal ECG memory, display device and sensor of one-dimension ultra-sound signal. Amplifier outlet is additionally connected with first inlet of display device and first inlet of unit of measurement of cardiointerval duration, and sensor of one-dimension ultra-sound signal is connected with first inlet of unit of comparison, whose second inlet is connected with outlet of unit of etalon ultra-sound signals memory. Outlet of unit of comparison is connected with second inlet of display device, second inlet of unit of measurement of cardiointerval duration and first inlet of unit of accurate measurement of heartbeat rate, outlet of calculation of second derivative being connected with second inlet of unit of accurate measurement of heartbeat rate, outlet of unit of measurement of cardiointerval duration is connected with third inlet of unit of accurate measurement of heartbeat rate, outlet of display device is connected with first inlet of analysis device, whose second inlet is connected with outlet of unit of abdominal ECG memory, and two outlets of unit of accurate measurement of heartbeat rate are connected with inlets of display device. Method of cardiodiagnostics of prenatal state of fetus includes registration of abdominal ECG, rhythmograms of fetus and pregnant woman, analogue-digital conversion, filtration and amplification of fetus ECG signals, calculation of amplitude of teeth and cardiocomplex intervals. By means of ultra-sound signal zone of fetus location, characterised by two-, three-peak complexes of ultra-sound signal testifying to "direct" directing of ultra-sound signal sensor at fetus heart, is localised, ECG electrodes being placed at 10-12 cm distance from sensor.EFFECT: application of inventions allows to increase reliability and efficiency of prenatal cardiodiagnostics of fetus and pregnant woman.3 cl, 10 dwg
ethod for prediction of changing functional class of disease in patients with chronic cardiac failure // 2386973
FIELD: medicine.SUBSTANCE: prediction of increasing the functional class of chronic cardiac failure (FC CCF) within the next year is ensured by determination of serum magnesium in blood serum (mmol/l) (XI), potassium of blood serum (mmol/l) (X2) and encephalic natriuretic peptide (pg/ml) (X3), observed diastolic dysfunction of left ventricle (LV) (1 - shown by cardiac ultrasound; 0 - not shown) (X4), high-grade ventricular premature beats (1 - shown by cardiac electrocardiogram; 0 - not shown) (X5) and cardiac fibrillation (1 - shown by cardiac ultrasound; 0 - not shown) (X6). The probability is calculated by formula Prob (event)=exp(eta)/(1+exp(eta)), where Prob (event) is probability of CCF progression, eta=-0.332674+2.12648*X1+6.34589*X2-0.00574387*X3+3.38776*X4=1-0.574371*X4+2-3.01702*X5=0; if Prob (event) is equal to 0, increasing the functional class is not expected; if Prob (event) is equal to 1, increasing the functional class by one unit is observed.EFFECT: application of the method allows improving effectiveness of prediction of chronic cardiac failure progression.4 tbl

ethod of detecting risk group of diastolic aortic ventricle dysfunction in patients suffering from coronary heart disease // 2356499
FIELD: medicine.SUBSTANCE: invention refers to medicine, namely to cardiology, and covers detecting risk group of diastolic aortic ventricle dysfunction in patients suffering from coronary heart disease. Functional class of cardiac insufficiency is scored 0 to 4 with stable or instable angina: presence - 1, absence - 0, myocardial infarction or postinfarction cardiosclerosis: presence - 1, absence - 0, previous aortocoronary bypass: presence - 1, absence - 0. Doppler imaging of transmitral blood flow and pulmonary vein results in detecting number of indices. Risk group of diastolic aortic ventricle dysfunction (DD) is detected in patients suffering from coronary heart disease. If the DD is 0.6 and less, low risk group of diastolic aortic ventricle dysfunction is detected, while the DD exceeding 0.6 indicates high risk group of diastolic dysfunction.EFFECT: method allows detecting risk group of diastolic aortic ventricle dysfunction in patients suffering from coronary heart disease at normal form of transmitral flow found in Doppler imaging if it is impossible to estimate adequately filling of aortic ventricle by reason of poor condition of the patient, in the absence of required ultrasonic equipment or in lowered acoustic availability.3 ex

ethod for optimising of diagnostics of pulmonary artery thromboembolia // 2334468
FIELD: medicine, cardiology.SUBSTANCE: patient under examination undergoes echocardioscopic examination with measuring right and left atrium; these parameters are expressed in form of their ratio by formula K= RA/LA, where K is coefficient in units, RA is size of right atrium in cm, LA is size of left atrium in cm. If K index is 1.2 (units), diagnosis of thromboembolia of small and medium branches of pulmonary artery is predicted. If value of index K is more than 1.2 (units) diagnosis of thromboembolia of large branches of pulmonary artery is predicted. On the basis of obtained results conclusion about possibility of diagnosis of pulmonary artery thromboembolia of small, medium and large branches is made after performing standard echocardioscopy.EFFECT: increase in diagnostic importance of method and simplification of result interpretation.1 dwg, 4 ex, 1 tbl
ethod of diagnosing arterial hypertension of fetus // 2285449
FIELD: medical equipment.SUBSTANCE: fetus is subject to echo-cardiograph test. Time of isovolumetric relaxation (IRT) of left ventricle is measured as well as heart beat rate (beats per minute). Calculative value of IRT is found from relation of IRT=0,54A1-0,032A2+33,8, where A1 is period of pregnancy, weeks; A2 is heart beat rating, beats per minute. If measured value of IRT is 10% higher than calculated value for fetus, then arterial hypertension is diagnosed. If measured value of IRT is 10% lower than calculated one, then absence of hypertension is testified.EFFECT: ability of revealing of changes in central and peripheral dynamics of fetus at early period of pregnancy.3 ex
ethod for treating parkinson's disease // 2281695
FIELD: medicine, neurology.SUBSTANCE: at the beginning of therapy course it is necessary to supply sound impulses at frequency of 50-75 impulses/min, at period of 0.75-1.25 sec, duration being 0.3 sec, sound level of about 5-25 dBA. One should match optimal frequency out of this range at which one may observe the largest average length of patient's step at heart rate being about 100-110 strokes/min, not more. One should register the obtained frequency of sound impulses onto an audio cassette for a patient to apply while walking with the help of an audio player and a portable head-phone. In case of stabilizing a patient's state and walking values it is necessary to conduct walking trial again, moreover, sound impulses should be supplied at frequency of 80-105 impulses/min, at period of 0.55-0.75 sec, duration being 0.3 sec and sound level of about 5-25 dBA. It is necessary to detect the frequency out of this range that corresponds to the highest average length of patient's step at heart rate being about 100-110 strokes/min, not more, to be registered and applied in subsequent procedures for correcting patient's walking parameters. The innovation widens the number of techniques for treating patients with disorders of motor function.EFFECT: higher efficiency of therapy.
ethod for predicting patient health state after acute myocardial infarction // 2273450
FIELD: medicine.SUBSTANCE: method involves recording pain onset time caused by acute myocardial infarction when admitting patient in hospital before applying thrombolytic therapy. Echocardiographic examination is carried out at the second acute myocardial infarction day. Mean pressure in pulmonary artery, maximum speed of late diastolic filling of the right and left ventricle and left atrium diameter are measured. Heart beat rate in rest state is measured at twelfth-fourteenth acute myocardial infarction day. Prognosis coefficients K1, K2 and K3 are calculated from mathematical formulas corresponding to cardiac insufficiency of functional classes I, II, III.EFFECT: applicability for producing remote outcome prognosis.

ethod and device for monitoring delivery // 2225165
The invention relates to medicine, in particular to obstetrics

Device for determining the condition of the fetus during pregnancy // 2103919
The invention relates to medical equipment and can be used in Doppler devices to determine the status of the fetus during pregnancy
 
2551255.
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