CN110367990A - A device for measuring the height of the abdomen - Google Patents

Abstract

The invention relates to a measuring device for the height of the abdomen. The measuring device comprises a support rod, a rotating shaft, a torsion spring, an operating handle, an arc length measuring ruler, and a chord length measuring ruler. The retracting rod is symmetrically installed on the rotating shaft and can rotate around the rotating shaft. The torsion spring is installed on the rotating shaft to close the retracting rod. The retracting rod extends two operating handles at the rotating shaft. By pressing and releasing the operating handle, the support rod can be opened or closed. The scale of the arc length measuring ruler passes through the two top ends of the strut rods, the scale scale indicates the arc length corresponding to the two top ends of the strut rods, and the scale scale of the chord length measuring ruler represents the straight-line distance between the two top ends of the strut rods. The present invention does not need to frequently move the supine pregnant woman when the pregnant woman measures the height of the uterus and the abdominal circumference, can greatly improve the efficiency of the obstetric examination, and reduce the discomfort of the pregnant woman during the obstetric examination.

Description

A device for measuring the height of the abdomen

technical field

The invention belongs to the technical field of medical appliances, and in particular relates to a measuring device for the height of the abdomen.

Background technique

Pregnant women need to measure the height and abdominal circumference of the uterus during the obstetric examination, and estimate the size, weight, and intrauterine development of the fetus based on this. Obstetrical inspectors need to pass the ruler around the back of the pregnant woman, and measure the largest circle around the abdomen as the abdominal circumference. Among the existing measurement methods, such as the Chinese patent (publication number: 1087805A, public date: 1994-06-15) palace height abdominal circumference measuring ruler, Chinese patent (authorized announcement number CN203776906U, authorized announcement date 2014.08.20) a palace The high abdominal circumference measurement device needs to move the pregnant woman many times in order to find the largest circle of the pregnant woman's abdomen, and needs to wear the measuring ruler from behind, which greatly affects the efficiency of the prenatal examination, and also increases the body weight of pregnant women who are inconvenient to move later. and psychological burden.

Contents of the invention

The object of the present invention is to provide a device for measuring the abdominal circumference of the palace height, which can conveniently and efficiently measure the abdominal circumference of the palace height without moving the supine pregnant woman.

The technical solution adopted by the present invention to solve the technical problem is: a high abdominal girth measuring device, which includes a support rod, a rotating shaft, a torsion spring, an operating handle, an arc length measuring ruler, and a chord length measuring ruler. The support rod is elliptical, divided into left and right parts of the same shape, symmetrically installed on the rotating shaft, and can rotate around the rotating shaft, and the torsion spring is installed on the rotating shaft to make the two parts of the receiving rod Closed into an elliptical shape, the two parts of the retracting rod extend two operating handles at the rotating shaft. By pressing and releasing the operating handle, the two parts of the retracting rod can be opened or closed. The retracting rod, the rotating shaft, and the torque The spring and the operating handle construct an elliptical clip device. The arc length measuring ruler is a tape measure that can be automatically rolled back. The ruler body is installed on the retracting rod. The top of the right part of the support rod, the minimum scale unit is mm, the chord length measuring ruler is a tape measure that can be automatically rolled back, the ruler body is installed on the support rod, the scale passes through the upper left position of the support rod, and is fixed At the same position on the upper right part of the support rod, the scale scale indicates the straight-line distance between the tops of the left and right parts of the support rod, rather than the actual measuring length of the tape measure, and the minimum scale unit is mm. The present invention does not need to frequently move the supine pregnant woman when the pregnant woman measures the height of the uterus and the abdominal circumference, can greatly improve the efficiency of the obstetric examination, and reduce the discomfort of the pregnant woman during the obstetric examination.

Description of drawings

Figure 1 is a schematic diagram of the structure of the present invention. In the figure, 1. a retracting rod, 2. a rotating shaft, 3. a torsion spring, 4. an operating handle, 5. an arc length measuring ruler, 6. a chord length measuring ruler, and 7. the abdominal section profile of a pregnant woman lying on her back.

Detailed ways

The present invention will be described in detail below in conjunction with the accompanying drawings.

As shown in Figure 1, a Gonggao abdominal circumference measurement device includes a support rod (1), a rotating shaft (2), a torsion spring (3), an operating handle (4), an arc length measuring ruler (5), and a chord length Measuring ruler (6). It is characterized in that the support rod (1) is elliptical, divided into left and right parts of the same shape, symmetrically installed on the rotating shaft (2), each part can rotate around the rotating shaft (2), and the torque The spring (3) is installed on the rotating shaft (2), and is used to close the two parts of the retracting rod (1) into an elliptical shape, and the two parts of the retracting rod (1) extend two described The operating handle (4), through the pressing and releasing of the operating handle (4), can make the two parts of the retracting rod (1) open or close. The arc length measuring ruler (5) is a tape measure that can The body is installed on the support rod (1), the scale passes through the top of the left part of the support rod (1), and is fixed on the top of the right part of the support rod (1), the minimum scale unit is mm, and the chord length measurement The ruler (6) is a tape measure that can be rolled back automatically. The ruler body is installed on the support rod (1), and the ruler passes through the upper left position of the support rod (1) and is fixed on the upper right part of the support rod (1). At the same position, the scale scale indicates the straight-line distance between the tops of the left and right parts of the support rod (1), rather than the actual measuring length of the tape measure, and the minimum scale unit is mm.

The principle of the abdominal circumference measurement of this device is: when the pregnant woman is lying on her back, the shape of the cross-section of the abdomen is shown in Figure 1 as marked 7, which is a bow with a flat bottom and an elliptical arc, and the operating handle of the device is operated in the direction of the abdominal cross-section (4) When the vertices A and B of the left and right ends of the support rod (1) are in contact with the pregnant woman and the obstetric examination bed, the circumference of the pregnant woman's abdomen is the circumference of the bow, that is, the length of the chord AB plus the ellipse arc corresponding to the chord AB The length of the chord AB can be obtained through the chord length measuring ruler (6). When points A and B coincide, that is, when the support rod (1) is closed, mark the 0 mm position of the chord length measuring ruler (6). The degree of opening of the two points A and B, mark the straight-line distance between the two points A and B on the chord length measuring ruler (6) to obtain the scale of the chord length measuring ruler (6), the length of the ellipse arc corresponding to the chord AB can be Obtained by the arc length measuring ruler (5), the length of the arc length measuring ruler (5) from point A to point B along the contour of the abdomen section of the pregnant woman is the length of the ellipse arc corresponding to the chord AB, passing through the highest point of the ellipse arc of the abdomen section contour The measured arch circumference is the abdominal circumference of the pregnant woman.

Next is the palace height measurement, along the direction of the abdominal midline, place the apex A of the left part of the support rod (1) on the upper edge of the pubic symphysis, place the apex B of the right part of the support rod (1) on the fundus of the uterus, and measure the arc length (5) The length of the two points A and B measured along the midline of the abdomen is the height of the palace.

The ruler of the arc length measuring ruler (5) is made of fiber material, which is a soft ruler. The ruler of the chord length measuring ruler (6) is made of fiber material, which can also be made of steel strip. , to facilitate the passage of the arc length measuring ruler (5) and prevent the ruler from slipping, the starting point of the arc length measuring ruler (5) is fixed at the apex of the right part of the support rod (1), and the ruler body is fixed on the support rod ( 1) The convenient reading position on the left. There is a hole in the upper left part of the support rod (1), which is convenient for the scale of the chord length measuring ruler (6) to pass through. The starting point of the scale is fixed at the same position on the upper right part of the support rod (1). The scale is parallel to the string AB. The chi body of the long measuring ruler (6) is fixed on the left part of the support rod (1) for easy reading.

The support rod (1) is formed by plastic injection molding, and can also be made of stainless steel, and the torque of the torsion spring (3) is preferably no more than 35N·m.

The operation steps are as follows: The pregnant woman lies on her back on the obstetrical examination bed and remains still. The obstetrical examination staff initially judges the highest position of the abdomen, clamps the device along the cross-sectional direction of the pregnant woman, and retracts the apexes A, B You need to be in contact with both the pregnant woman and the obstetric examination bed. Add the readings of the arc length measuring ruler (5) and the chord length measuring ruler (6) in the tightened state to measure the abdominal circumference. If it is difficult to judge the highest point of the abdomen , you can try to move the measuring device along the direction of the torso for multiple measurements to read the maximum value without the need for the pregnant woman to move.

Along the direction of the abdominal midline, the apex A of the left part of the strut rod (1) is placed on the upper edge of the pubic symphysis, the apex B of the right part of the strut rod (1) is placed on the fundus of the uterus, and the reading of the arc length measuring ruler (5) in the tightened state That is Gonggao.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention. For those skilled in the art, various modifications and changes can be made within the spirit and principles of the present invention. These equivalent modifications or Substitutions, etc., are all included within the protection scope of the present invention.

Claims (2)

1. a kind of pregnant woman's abdomen measuring device, including strut (1) is received, shaft (2), torque spring (3), operation handle (4), arc length Measuring scale (5), chord length measuring scale (6), which is characterized in that the receipts strut (1) is ellipse, is divided to shape identical left and right two Part is symmetrically mounted on the shaft (2), and each section can turn around axis (2) rotation, and the torque spring (3) is mounted on shaft (2) on, for making the two parts for receiving strut (1) be closed into elliptical shape, the two parts for receiving strut (1) extend at shaft (2) Two operation handles (4) out can make the two parts for receiving strut (1) open or be closed by pressing for operation handle (4), The arc length measuring scale (5) is the tape measure of energy automatic rewinding, and ruler body, which is mounted on, to be received on strut (1), and it is left that scale passes through receipts strut (1) The top in portion, and it is fixed on the top for receiving strut (1) right part, minimum scale unit is millimeter, and the chord length measuring scale (6) is energy The tape measure of automatic rewinding, ruler body, which is mounted on, to be received on strut (1), and scale passes through the upper left quarter position for receiving strut (1), and is fixed on receipts The upper right quarter same position of strut (1), minimum scale unit are millimeter.

2. a kind of pregnant woman's abdomen measuring device according to right 1, which is characterized in that the scale of the chord length measuring scale (6) Scale indicates to receive the linear distance on strut (1) left and right two parts top, rather than really tape measure length.