GB2121967A - Device for diagnosing the condition of a foetus in utero - Google Patents
Device for diagnosing the condition of a foetus in utero Download PDFInfo
- Publication number
- GB2121967A GB2121967A GB08217701A GB8217701A GB2121967A GB 2121967 A GB2121967 A GB 2121967A GB 08217701 A GB08217701 A GB 08217701A GB 8217701 A GB8217701 A GB 8217701A GB 2121967 A GB2121967 A GB 2121967A
- Authority
- GB
- United Kingdom
- Prior art keywords
- foetus
- utero
- belt
- foetal
- condition
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/43—Detecting, measuring or recording for evaluating the reproductive systems
- A61B5/4306—Detecting, measuring or recording for evaluating the reproductive systems for evaluating the female reproductive systems, e.g. gynaecological evaluations
- A61B5/4343—Pregnancy and labour monitoring, e.g. for labour onset detection
- A61B5/4362—Assessing foetal parameters
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02411—Detecting, measuring or recording pulse rate or heart rate of foetuses
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/103—Detecting, measuring or recording devices for testing the shape, pattern, colour, size or movement of the body or parts thereof, for diagnostic purposes
- A61B5/11—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb
- A61B5/113—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing
- A61B5/1135—Measuring movement of the entire body or parts thereof, e.g. head or hand tremor, mobility of a limb occurring during breathing by monitoring thoracic expansion
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Molecular Biology (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Veterinary Medicine (AREA)
- Biophysics (AREA)
- Pathology (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- Surgery (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Cardiology (AREA)
- Pregnancy & Childbirth (AREA)
- Physiology (AREA)
- Gynecology & Obstetrics (AREA)
- Pediatric Medicine (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Reproductive Health (AREA)
- Dentistry (AREA)
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measuring And Recording Apparatus For Diagnosis (AREA)
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
Abstract
The invention relates to a device for diagnosing the condition of a foetus in utero which comprises means for applying a sound stimulus for the foetus and means for detecting foetal movement resulting from the stimulus. The device may comprise a belt to go around the abdomen of a pregnant women, the belt comprising a strain gauge which detects elongation of the belt, and a sonic emitter. The device may also comprise a foetal heart detector for detecting the sounds produced by the foetal heart. The sound stimulus preferably resembles or is identical to the sounds which the foetus hears naturally in utero.
Description
SPECIFICATION
Device for diagnosing the condition of a foetus in utero
This invention relates to a device for diagnosing the condition of a foetus in utero.
According to the invention there is provided a device for diagnosing the condition of a foetus in utero which comprises means for applying a sound stimulus to the foetus and means for detecting foetal movement resulting from the stimulus.
An embodiment of the invention will now be described. This comprises a belt which, in use, around the abdomen of a pregnant woman whose foetus it is desired to examine. The belt is provided with a strain gauge which detects elongation of the belt. Mounted on the belt is a sonic emitter arranged to transmit into the woman's abdomen a sound signal which resembles or is identical to the sound which the foetus hears naturally in utero.
The sound may in the first place be recorded and the recorder replayed through the sonic emitter.
Alternatively, the sound may be synthesised by appropriate means. The belt preferably also carries a foetal heart detector for detecting the sounds produced by the foetal heart.
The outputs from the strain gauge and the foetal heart detector are fed to a graphic recorder on which the outputs are plotted. Also, a signal is fed from the sonic emitter to the recorder to produce a trace indicating the output of the sonic emitter. In addition, the recorder receives an intermittent signal produced by the pregnant woman herself operating an appropriate control, for example a button. This intermittent button produces yet another trace on the recorder.
The operation of the device is as follows. Firstly, the woman is examined to determine the position of the head and heart of the foetus. Then the belt is secured around her abdomen in a position such that the sonic emitter is over the head of the foetus and the heart detector is over the heart of the foetus. Sonic stimuli are then provided by the sonic emitter. If the foetus is healthy these stimuli will induce limb movement, which may be kicking of the legs or moving of the arms. Such movement is felt by the woman who is instructed to actuate the control, for example a button, whenever she feels such movement. The trace produced by the control thus indicates the instants when the woman detects foetal movement. The foetal
movement also produces movement of the
abdomen which in turn causes strain on the belt
secured round the abdomen. The strain is detected
by the strain gauge and a signal therefrom passes to the recorder. During this process the heart detector is producing a record of the activity of the foetal heart.
The device is capable of detecting various defects in the condition of the foetus. For example, complete lack of limb movement in response to the stimuli is likely to indicate failure at some point in the motor control of the foetus. Delayed response to stimuli may indicate hypoxia, a condition involving a reduced oxygen supply to the foetus which will cause brain damage if not diagnosed sufficiently early.
The power requirements of the device are small and so it can be battery-operated, making it possible for the whole device, including the recorder, to be in portable form.
Claims (8)
1. A device for diagnosing the condition of a foetus in utero which comprises means for applying a sound stimulus to the foetus and means for detecting foetal movement resulting from the stimulus.
2. A device according to claim 1, wherein the device comprises a belt to go around the abdomen of a pregnant woman, the belt comprising a strain gauge which detects elongation of the belt, and a sonic emitter.
3. A device according to claim 2, wherein the device comprises a foetal heart detector for detecting the sounds produced by the foetal heart.
4. A device according to claim 3, comprising a graphic recorder on which the outputs of the heart detector and of the strain gauge are plotted.
5. A device according to claim 4, wherein the output of the sonic emitter is also plotted on the recorder.
6. A device according to claim 4 or 5, wherein a control is provided which can be operated by the mother, the output of the control being plotted on the recorder.
7. A device according to any preceding claim, wherein the sound stimulus resembles or is identical to the sounds which the foetus hears naturally in utero.
8. A device for diagnosing the condition of a foetus in utero, substantially as herein described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08217701A GB2121967B (en) | 1982-06-18 | 1982-06-18 | Device for diagnosing the condition of a foetus in utero |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08217701A GB2121967B (en) | 1982-06-18 | 1982-06-18 | Device for diagnosing the condition of a foetus in utero |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2121967A true GB2121967A (en) | 1984-01-04 |
| GB2121967B GB2121967B (en) | 1986-01-08 |
Family
ID=10531135
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08217701A Expired GB2121967B (en) | 1982-06-18 | 1982-06-18 | Device for diagnosing the condition of a foetus in utero |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2121967B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781200A (en) * | 1985-10-04 | 1988-11-01 | Baker Donald A | Ambulatory non-invasive automatic fetal monitoring system |
| US5749831A (en) * | 1997-06-23 | 1998-05-12 | Baker; Donald A. | Fetal cardiac monitoring utilizing umbilical blood flow parameters and heartbeat information |
| WO2018102874A1 (en) * | 2016-12-07 | 2018-06-14 | The University Of Sydney | Apparatus for monitoring pregnancy or labour |
-
1982
- 1982-06-18 GB GB08217701A patent/GB2121967B/en not_active Expired
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4781200A (en) * | 1985-10-04 | 1988-11-01 | Baker Donald A | Ambulatory non-invasive automatic fetal monitoring system |
| US5749831A (en) * | 1997-06-23 | 1998-05-12 | Baker; Donald A. | Fetal cardiac monitoring utilizing umbilical blood flow parameters and heartbeat information |
| WO2018102874A1 (en) * | 2016-12-07 | 2018-06-14 | The University Of Sydney | Apparatus for monitoring pregnancy or labour |
| CN110290742A (en) * | 2016-12-07 | 2019-09-27 | 贝妈妥私人有限公司 | For monitoring the device of gestation or childbirth |
| US11213248B2 (en) | 2016-12-07 | 2022-01-04 | Baymatob Pty Ltd | Apparatus for monitoring pregnancy or labour |
| CN110290742B (en) * | 2016-12-07 | 2023-03-17 | 贝妈妥私人有限公司 | Device for monitoring pregnancy or childbirth |
| US11883187B2 (en) | 2016-12-07 | 2024-01-30 | Baymatob Pty Ltd | Apparatus for monitoring pregnancy or labour |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2121967B (en) | 1986-01-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |