RU95108652A - Apparatus for evaluating fetus condition by listening to its heart beat - Google Patents
Apparatus for evaluating fetus condition by listening to its heart beatInfo
- Publication number
- RU95108652A RU95108652A RU95108652/14A RU95108652A RU95108652A RU 95108652 A RU95108652 A RU 95108652A RU 95108652/14 A RU95108652/14 A RU 95108652/14A RU 95108652 A RU95108652 A RU 95108652A RU 95108652 A RU95108652 A RU 95108652A
- Authority
- RU
- Russia
- Prior art keywords
- signals
- fetus
- listening
- fetal
- perinatology
- Prior art date
Links
Abstract
FIELD: medicine, obstetrics, specifically, perinatology. SUBSTANCE: apparatus comprises piezoelectric elements placed onto anteroventral paries of pregnant woman to emit probing ultrasonic pulses and to detect signals reflected from tissues of mother and fetus. From signals thus-detected is isolated Doppler shift frequency originated only by movements of fetus' heart walls. Apparatus comprises two additional converters adapted to convert 200-600 Hz frequency range signals to signals within frequency range from 16 kHz to 50 Hz. Introduction of 2 additional converters enables apparatus to detect signals which remain out of detection range by any conventional equipment (for instance, at earlier pregnancy terms, starting from 7 weeks, in women suffering from obesity), and to improve other technical parameters of apparatus, namely: to reduce weight, overall dimensions, consumed power, while increasing its sensitivity and resolution power. EFFECT: invention is particularly useful in perinatology, one of obstetrics branches,, for diagnostic purposes by listening to fetus' heart beat and by ferus' cardiomonitoring.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95108652A RU2083159C1 (en) | 1995-05-29 | 1995-05-29 | Apparatus for determining condition of fetus by listening to heartbeating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
RU95108652A RU2083159C1 (en) | 1995-05-29 | 1995-05-29 | Apparatus for determining condition of fetus by listening to heartbeating |
Publications (2)
Publication Number | Publication Date |
---|---|
RU95108652A true RU95108652A (en) | 1997-02-10 |
RU2083159C1 RU2083159C1 (en) | 1997-07-10 |
Family
ID=20168206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU95108652A RU2083159C1 (en) | 1995-05-29 | 1995-05-29 | Apparatus for determining condition of fetus by listening to heartbeating |
Country Status (1)
Country | Link |
---|---|
RU (1) | RU2083159C1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2677014C2 (en) * | 2013-10-30 | 2019-01-14 | Конинклейке Филипс Н.В. | Pregnancy monitoring system and method |
RU2547959C1 (en) * | 2014-06-04 | 2015-04-10 | ООО "Рэй Системс" | Portable medical ultrasonic scanner |
-
1995
- 1995-05-29 RU RU95108652A patent/RU2083159C1/en active
Also Published As
Publication number | Publication date |
---|---|
RU2083159C1 (en) | 1997-07-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
Achiron et al. | Heart rate as a predictor of first-trimester spontaneous abortion after ultrasound-proven viability | |
Eik-Nes et al. | Methodology and basic problems related to blood flow studies in the human fetus | |
Dickey | Doppler ultrasound investigation of uterine and ovarian blood flow in infertility and early pregnancy | |
Timor-Tritsch et al. | The technique of transvaginal sonography with the use of a 6.5 MHz probe | |
Warren et al. | Dating the early pregnancy by sequential appearance of embryonic structures | |
US10092271B2 (en) | Ultrasound transducer probe and methods | |
EP0300069A1 (en) | Transducer | |
Tekay et al. | Comparison of uterine blood flow characteristics between spontaneous and stimulated cycles before embryo transfer | |
Karlsson et al. | Effects of fetal and maternal breathing on the ultrasonic Doppler signal due to fetal heart movement | |
Salim et al. | Corpus luteum blood flow in normal and abnormal early pregnancy: evaluation with transvaginal color and pulsed Doppler sonography. | |
ES2323960T3 (en) | THREE-DIMENSIONAL MONITORING OF MIOGRAPHIC ACTIVITY. | |
Lindahl et al. | Early diagnosis of pregnancy in sows by ultrasonic amplitude-depth analysis | |
Britten et al. | Pregnancy: Very early (24–56 days from last menstrual period) embryonic heart rate in normal pregnancies | |
RU95108652A (en) | Apparatus for evaluating fetus condition by listening to its heart beat | |
Pellerito et al. | Common pitfalls of endovaginal color Doppler flow imaging. | |
Hata et al. | Transvaginal Doppler Color Flow Mapping (With 1 color plate) | |
Hata et al. | Ultrasonographic identification and measurement of the human fetal pancreas in utero | |
Barraclough et al. | The localization of parathyroid tissue by ultrasound scanning prior to surgery in patients with hyperparathyroidism | |
Schaaps et al. | Pulsed Doppler on a vaginal probe. Necessity, convenience, or luxury? | |
SU1766411A1 (en) | Method for diagnosing threatening condition of fetus | |
Chen et al. | Antenatal fetal blood flow in the descending aorta and in the umbilical vein and their ratio in normal pregnancy | |
Hata et al. | Umbilical artery velocity waveforms are not valid indices for assessing growth retardation in utero | |
US6379305B1 (en) | Early-fetal-heartbeat-detection device and method | |
Valentin et al. | Intraobserver reproducibility of Doppler measurements of uterine artery blood flow velocity in premenopausal women | |
Li et al. | Human Placental Vasculature Imaging Using Long Ensemble Angular-coherence-based Doppler |