Fetal head direction measuring device and calculating method and measuring device simulator
A measuring device and a technology of direction vectors, applied in organ movement/change detection, medical science, ultrasonic/sonic/infrasonic Permian technology, etc., can solve problems such as complex user operations and promotion restrictions, and achieve simple and flexible operation and excellent results The effect of accurate and flexible measurement
Active Publication Date: 2019-03-15
GUANGZHOU LIAN MED TECH CO LTD
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However, the above method is only applicable to the case where the sagittal plane is perpendicular to the plane of the abdominal cavity scan of pregnant women, the user operation is relatively complicated, and the promotion is limited to a certain extent
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[0045] A tyre head direction measuring device, such as figure 1 As shown, it includes a data processing unit, a fetal head feature point positioning unit, a reference plane and a reference vector positioning unit connected to the data processing unit, wherein:
[0046] Feature point positioning unit of the tire head, used to locate the spatial position of two or more feature points of the tire head, including an ultrasonic probe with a first positioning sensor;
[0047] The reference plane and reference vector positioning unit is used to locate the reference plane and reference vector of the pelvis, including the second positioning sensor;
[0048] The data processing unit first obtains the direction vector between the two feature points of the tire head, then calculates the first projection vector of the direction vector on the reference plane, calculates the second projection vector of the reference vector on the reference plane, and finally calculates the first projection The angl...
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The invention belongs to the field of obstetric monitoring and relates to a fetal head direction measuring device and a calculating method and a measuring device simulator. The fetal head direction measuring device comprises a data processing unit and a fetal head characteristic point positioning unit, a reference plane and a reference vector positioning unit which are respectively connected withthe data processing unit. The calculating method comprises the following steps of: acquiring a direction vector between two characteristic points of a fetal head; calculating a first projection vectorof the direction vector on the reference plane; calculating a second projection vector of a reference vector on the reference plane; and finally calculating an angle from the first projection vectorto the second projection vector to determine the direction of the fetal head. By the adoption of the fetal head direction measuring device and calculating method, the calculation of an orientation ofthe fetal head can be more convenient and flexible, and it is simple and flexible for a user to operate. The fetal head direction measuring device simulator can simulate a fetal head direction measuring principle, check the fetal head direction measuring accuracy and improve the algorithm reliability.
Description
Technical field [0001] The invention belongs to the field of obstetric monitoring, and relates to a fetal head direction measuring device, a measuring method and a measuring device simulator. Background technique [0002] In obstetrics, the dynamic spatial relationship between the fetal head and the pelvis (referred to as the "cephalopelvic relationship") is essential for the selection and treatment of delivery methods; obstetrics clinical needs to monitor these data accurately at any time to help doctors and midwives make scientific delivery decisions . [0003] In childbirth, the direction of the fetal head is one of the important parameters indicating the spatial relationship between the fetal head and the pelvis. The direction of the fetal head describes the relationship between the fetus’s first exposed occiput and the front, back, left and right of the maternal pelvis. It can be divided into eight directions: anterior occiput, left anterior occiput, left occipital transverse...
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IPC IPC(8): A61B8/08
CPCA61B8/0866
Inventor 陆尧胜覃树城齐建国杨梓铎
Owner GUANGZHOU LIAN MED TECH CO LTD