Pelvis plane center measuring and calculating method based on pelvis model and application thereof

Abstract

The invention discloses a pelvis plane center measuring and calculating method based on a pelvis model and application of the pelvis plane center measuring and calculating method, and the method comprises the steps: building a three-dimensional coordinate system of the pelvis three-dimensional model through obtaining a pelvis three-dimensional model, and obtaining three-dimensional coordinates ofa pelvis entrance plane, a middle pelvis plane and a pelvis exit plane under the three-dimensional coordinate system; acquiring three-dimensional space information such as a midpoint of front and reardiameters of an inlet, a midpoint of a transverse diameter of the inlet, a midpoint of a transverse diameter of a middle section of a pelvis, a pubis arch angle, a pubis union lower edge and a midpoint of a transverse diameter of an outlet, and finally acquiring three-dimensional coordinates of a pelvis inlet plane central point, a middle pelvis plane central point and a pelvis outlet plane central point. According to the measuring and calculating method provided by the invention, through simple and feasible operation, the production axis can be effectively and quickly constructed; the birthaxis obtained through the measuring and calculating method is applied to equipment and used for measuring the position of the fetal head, the accuracy of the measuring result is high, no harm is caused to pregnant women and fetuses, and clinical application and popularization are facilitated.

Description

technical field [0001] The invention relates to the field of obstetric monitoring, in particular to a method for measuring and calculating the center of a pelvis plane based on a pelvis model and its application. Background technique [0002] The birth axis is the trajectory of the center of the fetal head during natural childbirth, and it is also an imaginary axis connecting the midpoints of the pelvic planes. Accurately constructing the birth axis can provide a more convenient and accurate representation method for the digital and precise measurement of fetal position, and can also make up for the inadequacy of traditional fetal head position measurement methods that cannot be combined with modern monitoring equipment during labor. [0003] The Chinese invention patent application (Application No. 201910848455.1) discloses a production axis construction method. This method only roughly mentions the determination of the center point of the pelvic section, but it is difficul...

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Problems solved by technology

[0003] Chinese invention patent application (Application No. 201910848455.1) discloses a production axis construction method, which only roughly mentions the need to determine the center point of the pelvic section, but it is difficult to achieve in actual operation and cannot be widely used in clinical practice

[0004] Chinese invention patent (Patent No. 201610831020.2) discloses a production axis calculation method based on plane cutting. The operation steps of this method are relatively complicated and cumbersome, and it is also not conducive to widespread application

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