Obstetrical measuring instrument
By designing an obstetric measuring instrument for intrapelvic measurement, the problem of inaccurate intrapelvic measurement in the prior art is solved, and a higher accuracy measurement is achieved, and the delivery process is optimized.
Patent Information
- Application Number
- CN202421571440.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-04
- Publication Date
- 2025-04-25
- Estimated Expiration
- 2034-07-04
AI Technical Summary
The prior art has limited methods of measuring intrapelvic measurement, and relying on the doctor's hand feel leads to inaccurate measurements, prone to errors, affecting the judgment of delivery conditions and progress.
An obstetric measuring instrument was designed, including a measuring disc, a fixed ruler and a rotating ruler, and parameters such as pelvic outlet size, pubic arch angle, mid-pelvic size, diagonal diameter and cervical dilation were measured in the pelvic area through a rubber sleeve.
It improves the accuracy of intrapelvic measurements, reduces errors, and helps doctors to more accurately judge delivery conditions and progress, thereby optimizing the delivery process.
Smart Images
Figure CN222787734U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to an obstetric measuring instrument. Background Art
[0002] Measuring the size of the pelvis during delivery is important for assessing whether the delivery process is smooth. The pelvis is the passage for the fetus to pass through the birth canal, and its size and shape directly affect the delivery process. During delivery, the doctor will guide the delivery based on the measurement results of the pelvis, such as using auxiliary tools such as forceps or vacuum pumps to help the fetus pass through the birth canal smoothly.
[0003] However, it is easy to measure outside the pelvis, and the measurement can also be very accurate, but the effect of external pelvic measurement on delivery is limited. In fact, measurement inside the pelvis has a greater impact on delivery, but the current means of internal pelvic measurement are relatively limited. It is mainly measured by the doctor directly inserting his hand into the birth canal of the parturient. The measurement results rely too much on the feel of the hand, so the examination is inaccurate and errors are easy to occur, which affects the judgment of the conditions and progress of delivery. Utility Model Content
[0004] In order to solve the above technical problems, the utility model proposes an obstetric measuring instrument, which can not only provide accurate detection of internal pelvic measurements, but also accurately measure the size of the cervical dilation, and can also accurately measure the size of the pubic arch in external pelvic measurements.
[0005] The technical solution to achieve the purpose of the utility model is: an obstetric measuring instrument, including a measuring disk, a fixed ruler is fixedly connected to the measuring disk, a rotating ruler is rotatably connected to the measuring disk, both the fixed ruler and the rotating ruler are provided with ruler body scale lines, and the measuring disk is provided with ruler spacing scale lines and angle scale lines.
[0006] Preferably, an arc-shaped hole is opened on the measuring disk, and a diamond-shaped block is fixedly connected to the rotating ruler, and the diamond-shaped block is located inside the arc-shaped hole.
[0007] Preferably, the fixed ruler and the rotating ruler are both fixedly connected with rubber sleeves, and the two rubber sleeves are located at one end of the fixed ruler and the rotating ruler away from the measuring disc.
[0008] Preferably, the length of the fixed ruler and the rotating ruler is 15 cm, the surface of the fixed ruler and the rotating ruler is smooth, and the rubber sleeve is made of skin-friendly rubber material.
[0009] Compared with the prior art, the utility model has the following significant advantages:
[0010] First: This measuring instrument can measure the size of the pelvic outlet (i.e., the transverse diameter of the outlet). The specific method is to place the two rubber sleeves of this measuring instrument on the inner edges of the two ischial tuberosities respectively, and the length of the transverse diameter of the outlet can be read by the scale lines on the fixed ruler and the rotating ruler.
[0011] Second: This measuring instrument can also measure the size of the pubic arch angle. The specific method is to place the two rubber sleeves of this measuring instrument on the descending branch of the pubic bone respectively, with the inner edges flush, and then read the angle between the fixed ruler and the rotating ruler through the angle scale line. The angle is the size of the pubic arch angle.
[0012] Third: This measuring instrument can also measure the size of the mid-pelvis (i.e. the distance between the ischial spines). The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, and places the two rubber sleeves on the two ischial spines respectively. The distance between the ends of the two rubber sleeves, i.e. the distance between the two ischial spines, can be read through the scale line on the ruler.
[0013] Fourth: This measuring instrument can also measure the size of the diagonal diameter (i.e. the anterior-posterior diameter of the pelvic inlet). The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, touches the midpoint of the upper edge of the sacral promontory with the tip of the middle finger, puts the fixed scale and the rotating scale of the measuring instrument together, places the end along the index finger at the midpoint of the upper edge of the sacral promontory, and reads the length corresponding to the scale line on the measuring foot at the lower edge of the pubic symphysis. The reading is the size of the diagonal diameter.
[0014] Fifth: This measuring instrument can also measure the height of the fetal presenting part (the fetal presenting part refers to the position of the fetus in the uterus relative to the mother's pelvis). The specific method is that before or during delivery, the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, touches the lowest point of the fetal presenting part with the tip of the middle finger, puts the fixed ruler and the rotating ruler together, and places the end along the index finger at the lowest point of the fetal presenting part, and reads the height of the presenting part through the scale lines on the fixed ruler and the rotating ruler.
[0015] Sixth: This measuring instrument can also measure the size of the dilation of the cervical opening after delivery. The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, and places the two rubber sleeves on the measuring instrument on the inner edge of the same diameter line of the cervical opening. The distance between the ends of the two rubber sleeves is read through the scale interval scale line to obtain the specific distance of the dilation of the cervical opening after delivery.
[0016] The utility model can measure multiple pelvic data of a parturient before giving birth, thereby helping to determine whether the parturient is suitable for giving birth and what method to adopt for giving birth. Compared with the traditional manual measurement method, the use of this measuring instrument can improve the accuracy of measurement and reduce errors. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] The utility model is further explained below in conjunction with the accompanying drawings and embodiments:
[0018] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0019] Figure 2 It is a top view of the utility model;
[0020] Figure 3 This utility model Figure 1 An enlarged view of the structure of part A is shown;
[0021] Figure 4 It is a cross-sectional view of the internal structure of the measuring disc in the utility model.
[0022] Description of reference numerals:
[0023] 1. Measuring disk; 2. Fixed ruler; 3. Rotating ruler; 4. Arc-shaped hole; 5. Scale lines on ruler spacing; 6. Angular scale lines; 7. Diamond block; 8. Scale lines on ruler body; 9. Rubber sleeve. DETAILED DESCRIPTION
[0024] The utility model is described in detail below, and the technical solutions in the embodiments of the utility model are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0025] The utility model provides an obstetric measuring instrument through improvement. The technical solution of the utility model is:
[0026] like Figure 1-Figure 4 As shown, an obstetric measuring instrument includes a measuring disk 1, a fixed ruler 2 is fixedly connected to the measuring disk 1, a rotating ruler 3 is rotatably connected to the measuring disk 1, ruler body scale lines 8 are arranged on the fixed ruler 2 and the rotating ruler 3, and the measuring disk 1 is provided with scale spacing scale lines 5 and angle scale lines 6. The scale on the angle scale line 6 refers to the angle between the fixed ruler 2 and the rotating ruler 3, and the scale on the scale spacing scale line 5 refers to the distance between the ends of the fixed ruler 2 and the rotating ruler 3. Since the lengths of the fixed ruler 2 and the rotating ruler 3 are fixed, the distance between the ends of the fixed ruler 2 and the rotating ruler 3 is related to the angle between the two. When the angle between the fixed ruler 2 and the rotating ruler 3 is known, the distance between the ends of the fixed ruler 2 and the rotating ruler 3 can be calculated by trigonometric functions, and by setting the scale spacing scale line 5, the distance between the ends of the two can be directly read without calculation.
[0027] Furthermore, an arc-shaped hole 4 is opened on the measuring disk 1, and a diamond block 7 is fixedly connected to the rotating ruler 3. The diamond block 7 is located inside the arc-shaped hole 4. The diamond block 7 can be used to facilitate reading. The two tips of the diamond block 7 point to the scales on the ruler spacing scale line 5 and the angle scale line 6 respectively.
[0028] Furthermore, rubber sleeves 9 are fixedly connected to both the fixed ruler 2 and the rotating ruler 3 . The two rubber sleeves 9 are located at one end of the fixed ruler 2 and the rotating ruler 3 away from the measuring disc 1 .
[0029] Furthermore, the length of the fixed ruler 2 and the rotating ruler 3 is 15 cm, the surface of the fixed ruler 2 and the rotating ruler 3 is smooth, and the rubber sleeve 9 is made of skin-friendly rubber material. During use, the fixed ruler 2 and the rotating ruler 3 need to be inserted into the birth canal of the parturient. Therefore, the rubber sleeve 9 is set at the end of the fixed ruler 2 and the rotating ruler 3 to avoid damage to the mucosal tissue of the birth canal of the parturient, and the rubber sleeve 9 is made of skin-friendly material to avoid irritation to the mucosa.
[0030] The specific working method is: the measuring instrument can measure the size of the pelvic outlet (i.e., the transverse diameter of the outlet), and the specific method is to place the two rubber sleeves 9 of the measuring instrument on the inner edges of the two ischial tuberosities respectively, and the length of the transverse diameter of the outlet can be read by fixing the ruler 2 and rotating the ruler body scale line 8 on the ruler 3.
[0031] The measuring instrument can also measure the size of the pubic arch angle. The specific method is to place the two rubber sleeves 9 of the measuring instrument on the descending pubic branch respectively, with the inner edges flush, and then read the angle between the fixed ruler 2 and the rotating ruler 3 through the angle scale line 6. The angle is the size of the pubic arch angle.
[0032] The measuring instrument can also measure the size of the mid-pelvis (i.e., the distance between the ischial spines). The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, and places the two rubber sleeves 9 on the measuring instrument on the two ischial spines respectively. The distance between the ends of the two rubber sleeves 9, i.e., the distance between the two ischial spines, can be read through the scale interval scale line 5.
[0033] The measuring instrument can also measure the size of the diagonal diameter (i.e., the anterior-posterior diameter of the pelvic entrance). The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, touches the midpoint of the upper edge of the sacral promontory with the tip of the middle finger, puts the fixed scale 2 and the rotating scale 3 of the measuring instrument together, places the ends along the index finger at the midpoint of the upper edge of the sacral promontory, and reads the length corresponding to the scale line 8 on the measuring foot at the lower edge of the pubic symphysis. The reading is the size of the diagonal diameter.
[0034] The measuring instrument can also measure the height of the fetal presenting part (the fetal presenting part refers to the position of the fetus in the uterus relative to the mother's pelvis). The specific method is that before or during delivery, the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, touches the lowest point of the fetal presenting part with the tip of the middle finger, puts the fixed ruler 2 and the rotating ruler 3 together, and places the end along the index finger at the lowest point of the fetal presenting part, and reads the height of the presenting part through the scale lines 8 on the fixed ruler 2 and the rotating ruler 3.
[0035] The measuring instrument can also measure the size of the dilation of the cervical opening after delivery. The specific method is that the examiner puts the index finger and middle finger of one hand into the vagina of the parturient, and places the two rubber sleeves 9 on the measuring instrument on the inner edge of the same diameter line of the cervical opening respectively. The distance between the ends of the two rubber sleeves 9 is read through the scale interval scale line 5, and the specific distance of the dilation of the cervical opening after delivery can be obtained.
[0036] The technical means disclosed in the utility model are not limited to the technical means disclosed in the above technical means, but also include technical solutions composed of equivalent replacement of the above technical features. Matters not covered in the utility model belong to the common knowledge of those skilled in the art.
Claims
1. An obstetric measuring instrument, comprising a measuring plate (1), characterized in that: The measuring disk (1) is fixedly connected to a fixed ruler (2), and the measuring disk (1) is rotatably connected to a rotating ruler (3). Both the fixed ruler (2) and the rotating ruler (3) are provided with ruler body scale lines (8), and the measuring disk (1) is provided with scale spacing scale lines (5) and angle scale lines (6).
2. An obstetric measuring instrument according to claim 1, characterized in that: The measuring disk (1) is provided with an arc-shaped hole (4), the rotating ruler (3) is fixedly connected with a diamond-shaped block (7), and the diamond-shaped block (7) is located inside the arc-shaped hole (4).
3. An obstetric measuring instrument according to claim 1, characterized in that: The fixed ruler (2) and the rotating ruler (3) are both fixedly connected with a rubber sleeve (9), and the two rubber sleeves (9) are located at one end of the fixed ruler (2) and the rotating ruler (3) away from the measuring disc (1).
4. An obstetric measuring instrument according to claim 3, characterized in that: The length of the fixed ruler (2) and the rotating ruler (3) is 15 cm. The surfaces of the fixed ruler (2) and the rotating ruler (3) are smooth, and the rubber sleeve (9) is made of skin-friendly rubber material.