CS252956B1 - Device for foetus locomotor activity scanning and evaluation - Google Patents
Device for foetus locomotor activity scanning and evaluation Download PDFInfo
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- CS252956B1 CS252956B1 CS857836A CS783685A CS252956B1 CS 252956 B1 CS252956 B1 CS 252956B1 CS 857836 A CS857836 A CS 857836A CS 783685 A CS783685 A CS 783685A CS 252956 B1 CS252956 B1 CS 252956B1
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- fetal
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- 238000011156 evaluation Methods 0.000 title abstract description 5
- 230000006742 locomotor activity Effects 0.000 title 1
- 230000001605 fetal effect Effects 0.000 claims abstract description 15
- 230000000694 effects Effects 0.000 claims description 7
- 230000037081 physical activity Effects 0.000 abstract description 8
- 230000007774 longterm Effects 0.000 abstract description 5
- 238000012544 monitoring process Methods 0.000 abstract description 5
- 230000035935 pregnancy Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 239000002574 poison Substances 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 235000013580 sausages Nutrition 0.000 abstract 1
- 210000003754 fetus Anatomy 0.000 description 5
- 238000002604 ultrasonography Methods 0.000 description 3
- 230000035790 physiological processes and functions Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 210000004291 uterus Anatomy 0.000 description 1
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Abstract
Účelom zariadenia na snímanie a vyhodnocovanie pohybovej aktivity plodu je získanie signálu, reprezentujúceho pohybová aktivitu plodu, ktorý sa zaznamenává na zapisovaciu jednotku a ďalej spracováva v digitálně) formě, výsledkom čoho je priebežné zobrazovanie počtu pohybov plodu na zobrazovacej jednotke. Uvedeného áčelu sa dosiahne tým, že výstupy z dvoch tenzometrických snímačov sá spojené so vstupmi zosilňovačov, ktorých výstupy sá spojené so vstupom diferenciálneho zosilňovača, ktorého výstup je spojený so vstupom filtra-pásmovej priepuste, ktorého výstup je připojený na zapisovaciu jednotku a na jed notku počítača nadprahových impulzov, ktorá je připojená na jednotku zobrazovania počtu nadprahových impulzov. Zariadenie na snímanie a vyhodnocovanie pohybovej aktivity plodu može nájsť využitie v porodníckej diagnostike pri monitorovaní pohybovej aktivity plodu v druhej polovici gravidity. Vzhfadom na použité technické principy je vhodné aj na dlhodobé monitorovanie.Purpose of the sensing and evaluation device Fetal physical activity is gaining a signal representing a motion fetal activity recorded on recording unit and further processes in digitally), resulting in continuous showing the number of fetal movements per the display unit. Said sausage reaches by having outputs of two strain gauges sensors connected to inputs amplifiers whose outputs are connected with differential amplifier input the output of which is connected to a filter-band input the outlet whose output is connected to the recording unit and the poison of a computer of over-threshold impulses is attached to the display unit number of over-threshold impulses. equipment for motion detection and evaluation fetal activities can find use in obstetrics diagnostics in motion monitoring fetal activity in the second half of pregnancy. Given the technical principles used it is also suitable for long-term monitoring.
Description
Vynález sa týká zariadenia na snímanie a vyhodnocovanie pohybovej aktivity plodu pre diagnostiku v porodníctve.The invention relates to a device for sensing and evaluating fetal physical activity for diagnosis in obstetrics.
Doteraz známe zariadenia na snímanie pohybovej aktivity plodu tenzometrickými snímačmi využívajú jeden alebo viac snímačov, z ktorých sa signály nezávisle zaznamenávajú, připadne jednoducho upravujú pre dalšie vyhodnotenie. Nevýhodou týchto zariadení je, že získané signály obsahujú popři informácii. o pohybovej aktivitě plodu aj nežiadúce zložky od mechanických prejavov fyziologických funkcií tehotnej, najma od kontrakcií maternice, dýchania a tepu tehotnej, ktoré posobia rušivo pri vyhodnocovaní pohybovej aktivity plodu. Ďalšie známe zariadenia na snímanie pohybovej aktivity plodu — s využitím ultrazvuku majú pre případ dlhodobejšieho monitorovania nevýhodu v tom, že dlhodobý vplyv ultrazvuku na plod nie je s istotou preskúmaný.The prior art devices for sensing fetal movement activity by strain gauges utilize one or more sensors from which the signals are independently recorded or simply adjusted for further evaluation. The disadvantage of these devices is that the signals obtained contain information. on the physical activity of the fetus and undesirable components from mechanical manifestations of the physiological functions of the pregnant woman, in particular from the contractions of the uterus, breathing and the pulse of the pregnant woman, which will interfere with the evaluation of the physical activity of the fetus. Other known devices for sensing fetal physical activity - using ultrasound - have the disadvantage of long-term monitoring in that the long-term effect of ultrasound on the fetus is uncertain.
Uvedené nevýhody v podstatnej miere odstraňuje zariadenie na snímanie a vyhodnocovanie pohybovej aktivity podfa vynálezu, ktorého podstata spočívá v tom, že výstupy z dvoch tenzometrických snímačov sú spojené so vstupmi zosilňovačov, ktorých výstupy sú spojené so vstupom diferenciálneho zosilňovača, ktorého výstup je spojený so vstupom filtra-pásmovej priepuste, ktorého výstup je připojený na zapisovaciu jednotku a na jednotku počítača nadprahových impulzov, ktorá je připojená na jednotku zobrazovania počtu nadprahových impulzov.The above-mentioned disadvantages are substantially eliminated by the device for sensing and evaluating movement activity according to the invention, which consists in that the outputs of two strain gauges are connected to the inputs of amplifiers, the outputs of which are connected to the input of a differential amplifier whose output is connected to the filter input a band-pass filter, the output of which is connected to the recording unit and to the over-threshold pulse counter unit, which is connected to the over-threshold pulse display unit.
Hlavnou přednostou vynálezu je získanie signálu, reprezentujúceho pohybovú aktivitu plodu, z ktorého sú v podstatnej miere odstránené rušivé zložky od mechanických prejavov fyziologických funkcií tehotnej. Tento signál sa zaznamenává na zapisovaciu jednotku a súčasne ďalej spracováva v digitálnej formě, čo umožňuje priebežné zobrazovanie počtu pohybov plodu na zobrazovacej jednotke. Přednostou oproti snímaniu pohybovej aktivity plodu s využitím ultrazvuku je, že aj pri dlhodobejšom monitorovaní sú vylúčené negativné účinky na plod.The main advantage of the invention is to obtain a signal representing the physical activity of the fetus, from which the interfering components are substantially removed from the mechanical manifestations of the physiological functions of the pregnant woman. This signal is recorded to the recording unit and at the same time further processed in digital form, allowing the number of fetal movements to be continuously displayed on the display unit. The advantage over ultrasound sensing of fetal physical activity is that negative effects on the fetus are excluded even after long-term monitoring.
Na pripojenom výkrese je znázorněná bloková schéma zariadenia na snímania a vyhodnocovanie pohybovej aktivity plodu.The attached drawing shows a block diagram of a device for sensing and evaluating the fetal movement activity.
Zariadenie na snímanie a vyhodnocovanie pohybovej aktivity plodu pozostáva z dvoch tenzometrických snímačov 1 a 2, ktoré sú pohyblivo uložené na elastickom páse 3, pričom výstupy tenzometrických snímačov 1 a 2 sú spojené so vstupmi zosilňovačov 4 a 5. Výstupy zosilňovačov 4 a 5 sú spojené so vstupom diferenciálneho zosilňovača 6, ktorého výstup je spojený s filtrom 7. Výstup filtra 7 — pásmovou priepasťou je spojený so zapisovacou jednotkou 8 a s jednotkou počítača 9 nadprahových impulzov, ktorá je spojená s jednotkou 10 zobrazovania počtu nadprahových impulzov.The device for sensing and evaluating the fetal movement activity consists of two strain gauges 1 and 2 movably mounted on the elastic band 3, the outputs of the strain gauges 1 and 2 being connected to the inputs of the amplifiers 4 and 5. The outputs of the amplifiers 4 and 5 are connected to the input of the differential amplifier 6, the output of which is connected to the filter 7. The filter output 7 of the bandpass is connected to the recording unit 8 and to the computer of the over threshold thresholds 9 which is connected to the over threshold threshold display unit 10.
Pri snímaní pohybovej aktivity p’odu sa tenzometrické snímače 1 a 2 uložia na brucho tehotnej spolu s alestickým pásom 3, na ktorom sú pohyblivo zložené. Elastický pás 3 sa zapne a posúvaním tenzometrických snímačov 1 a 2 po elastickom páse 3 sa nastaví ich správná poloha — uložia sa symetricky vzhfadom k sagitálnej rovině těla. Elastické signály z výstupov tenzometrických snímačov 1 a 2 sa zosilnia v zosilňovačoch 4 a 5 a v diferenciálnom zosilňovači 6 sa navzájom odčítajú. Výstupný signál zo zosilňovača 6 sa filtruje filtrom 7 — pásmovou priepusťou s medznými frekvenciami 0,02 Hz a 0,2 Hz. Signál po filtrácii sa zaznamenává na zapisovacej jednotke 8 a súčasne postupuje na vstup jednotky počítača 9 nadprahových impulzov, ktorá vyhodnocuje počet nadprahových impulzov. Údaj o počte nadprahových impulzov sa vysiela na jednotku 10 zobrazovania, ktorá zobrazuje počet nadprahových impulzov, t. j. počet pohybov plodu od začiatku snímania.When sensing the physical activity of the rod, strain gauges 1 and 2 are placed on the abdomen along with the alesthetic belt 3 on which they are movably folded. The elastic band 3 is fastened and the correct position is set by moving the strain gauges 1 and 2 along the elastic band 3 - they are placed symmetrically with respect to the sagittal plane of the body. The elastic signals from the outputs of the strain gauges 1 and 2 are amplified in amplifiers 4 and 5 and subtracted from each other in the differential amplifier 6. The output signal from amplifier 6 is filtered through a 7-band pass filter with cut-off frequencies of 0.02 Hz and 0.2 Hz. The signal after filtration is recorded on the recording unit 8 and at the same time passes to the input of the computer of the over threshold thresholds, which evaluates the number of over threshold thresholds. The number of over-threshold pulses is transmitted to the display unit 10 that displays the number of over-threshold pulses, t. j. the number of fetal movements since the beginning of the scan.
Vynález može nájsť využitie v porodníckej diagnostike pri monitorovaní pohybovej aktivity plodu v druhej polovici gravidity. Vzhfadom na použité technické principy je vhodný aj na dlhodobé monitorovanie.The invention can be used in obstetric diagnostics to monitor fetal movement activity in the second half of pregnancy. Due to the technical principles used, it is also suitable for long-term monitoring.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS857836A CS252956B1 (en) | 1985-11-01 | 1985-11-01 | Device for foetus locomotor activity scanning and evaluation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS857836A CS252956B1 (en) | 1985-11-01 | 1985-11-01 | Device for foetus locomotor activity scanning and evaluation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CS783685A1 CS783685A1 (en) | 1987-03-12 |
| CS252956B1 true CS252956B1 (en) | 1987-10-15 |
Family
ID=5428233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CS857836A CS252956B1 (en) | 1985-11-01 | 1985-11-01 | Device for foetus locomotor activity scanning and evaluation |
Country Status (1)
| Country | Link |
|---|---|
| CS (1) | CS252956B1 (en) |
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1985
- 1985-11-01 CS CS857836A patent/CS252956B1/en unknown
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| Publication number | Publication date |
|---|---|
| CS783685A1 (en) | 1987-03-12 |
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