Detector for antepartum digital measurement

Abstract

The present application belongs to the technical field of part of human body measurement, and particularly relates to a detector for measuring before delivery, which comprises a detection component and a measuring component detachably connected with the detection component, the detection component comprises a first detection piece and a second detection piece, the first detection piece comprises a first finger cuff and a catheter connected to a lower end of one side of the first finger cuff, and an upper end of the first finger cuff is provided with a wire hole communicated with the catheter, the detector is provided in a split mode, and a relatively accurate reading can be obtained on the measuring component through body measurement by the detection component, so that accurate measurement of cervical dilation helps doctors to accurately judge the delivery process, in addition, since only the detection component of the whole detector contacts the puerpera, the structure of the detection component is relatively simple, and the manufacturing cost is relatively low, therefore, the detection component can be used as a disposable product, so that the puerpera can be provided with a relatively safe detection service at a relatively low use cost.

Description

Technical Field

[0001] This invention belongs to the field of anthropometric technology, specifically relating to a detector for measuring cervical dilation before delivery. Background Technology

[0002] The process of labor is accompanied by cervical dilation, which requires constant monitoring. Cervical dilation plays a crucial role in labor progress standards. For example, in the new standards, cervical dilation of 6 cm is considered the marker of the active phase. The diagnostic criteria for active phase arrest are: after rupture of membranes and cervical dilation ≥6 cm, if uterine contractions are normal but cervical dilation stops for ≥4 hours, active phase arrest can be diagnosed; if uterine contractions are poor and cervical dilation stops for ≥6 hours, active phase arrest can be diagnosed. Active phase arrest can be an indication for cesarean section. Therefore, accurate quantitative measurement of cervical dilation helps doctors accurately assess the progress of labor.

[0003] Currently, cervical dilation is estimated by finger measurement during clinical testing, hence the term "cervical dilation measurement." During measurement, the index and middle fingers are inserted into the vagina to the cervix, and then the fingers are spread to estimate the degree of cervical dilation. Due to the lack of visibility, finger-based estimation of cervical dilation has a large margin of error, especially for inexperienced doctors. To address these issues, we have proposed a detector for cervical dilation measurement before delivery. Summary of the Invention

[0004] To overcome the problems existing in related technologies, the present invention discloses a detector for measuring cervical dilation before delivery.

[0005] To achieve the above objectives, one technical solution adopted by the present invention is:

[0006] A detector for measuring cervical dilation before delivery includes a detection component and a measuring component detachably connected to the detection component. The detection component includes a first detection element and a second detection element. The first detection element includes a first finger sleeve and a conduit connected to the lower end of one side of the first finger sleeve. The upper end of the first finger sleeve has a wire hole communicating with the conduit. The second detection element includes a second finger sleeve, a cable connected to the upper end of one side of the second finger sleeve, and a limiting element provided at the end of the cable away from the second finger sleeve. The cable passes through the wire hole and the conduit.

[0007] The measuring component includes a fixed component, a moving component, and an elastic component. The fixed component includes a measuring cylinder and a fixed rod located at the lower end of the measuring cylinder and extending to the right. The measuring cylinder has a vertical sliding groove that runs through the left and right sides. The lower end of the fixed rod has a first limiting groove for the insertion of the limiting component. The top wall of the first limiting groove has a first wire passage groove for the cable to pass through. The side of the fixed rod has a first guide groove that communicates with the first wire passage groove and the first limiting groove.

[0008] The moving part includes a slider that is longitudinally slidably assembled in the measuring cylinder, a moving rod disposed on the slider and extending to the right through the vertical sliding groove, and a toggle member disposed on the slider and extending to the left through the vertical sliding groove. The upper end of the moving rod has a second limiting groove for the insertion of the conduit. The bottom wall of the second limiting groove has a second wire passage groove for the cable to pass through. The side of the moving rod has a second guide groove communicating with the second wire passage groove and the second limiting groove. The elastic member is disposed in the measuring cylinder to push the moving part away from the fixed rod.

[0009] Furthermore, the upper end of the slider is provided with a first placement through groove, the actuating component includes a slide block and a pressing block, the slide block is located at the left end of the slider, the left end of the slide block is provided with a transverse sliding groove communicating with the first placement through groove, and the pressing block is slidably assembled in the transverse sliding groove.

[0010] Furthermore, the extrusion block cannot completely slide out of the transverse groove.

[0011] Furthermore, the extrusion block is provided with a limiting groove that is parallel to the sliding direction of the extrusion block, and the slide block is provided with a limiting rod that extends into the limiting groove.

[0012] Furthermore, the left end of the extrusion block has a push button.

[0013] Furthermore, the vertical sliding groove extends through the upper end of the measuring cylinder, and the measuring component also includes a cap threaded to the outside of the upper end of the measuring cylinder for sealing the upper end of the vertical sliding groove. The upper end of the cap is provided with a second placement groove that matches the first placement groove.

[0014] Furthermore, the top inner side of the cover is provided with a support cylinder for supporting the inner side of the measuring cylinder.

[0015] Furthermore, the side of the cover is provided with several anti-slip protrusions.

[0016] Furthermore, the measuring cylinder is made of transparent material, and measuring scale lines are provided on the side of the measuring cylinder.

[0017] Furthermore, the measuring cylinder and the fixed rod are integrally formed.

[0018] In summary, this invention discloses a detector for measuring cervical dilation before delivery. The detector is a split device, and the measurement can obtain a relatively accurate reading by inserting the detection component into the body. Such accurate measurement of cervical dilation helps doctors to accurately judge the progress of labor. In addition, since only the detection component of the entire detector comes into contact with the mother, and the structure of the detection component is relatively simple and the manufacturing cost is low, the detection component can be used as a disposable item. In this way, a safer detection service can be provided to the mother at a lower cost. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0020] Figure 1 This is a schematic diagram of a structure according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0022] Figure 3 for Figure 1 Enlarged structural diagram at point B;

[0023] Figure 4 This is a cross-sectional structural diagram of an embodiment of the present invention;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point C;

[0025] Figure 6 for Figure 4 Enlarged structural diagram at point D;

[0026] Figure 7 for Figure 4 Enlarged structural diagram at point E;

[0027] Figure 8 for Figure 4 Enlarged structural diagram at point F;

[0028] Figure 9 This is a schematic diagram of the structure of the fixing component in one embodiment of the present invention;

[0029] Figure 10 This is a partial structural schematic diagram of the moving part in one embodiment of the present invention;

[0030] Figure 11 This is a schematic diagram of the cap structure in one embodiment of the present invention;

[0031] Figure 12 This is a schematic diagram of the extrusion block in one embodiment of the present invention.

[0032] The meanings of the labels in the attached diagram are as follows:

[0033] First detection component 1, first finger sleeve 11, conduit 12, wire hole 121, second detection component 2, second finger sleeve 21, cable 22, limiting component 23, fixed component 3, measuring cylinder 31, vertical sliding groove 311, fixed rod 32, first limiting groove 321, first wire passage groove 322, first guide groove 323, moving component 4, slider 411, first placement passage groove 4111, moving rod 412, second limiting groove 4121, second wire passage groove 4122, second guide groove 4123, toggle component 423, slide block 4231, horizontal sliding groove 42311, extrusion block 4232, limiting sliding groove 4233, limiting rod 4234, push button 4235, elastic component 5, cover 6, second placement passage groove 61, support cylinder 62, anti-slip protrusion 63. Detailed Implementation

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] Reference Figure 1-12 As shown, this embodiment of a detector for measuring cervical dilation before delivery includes a detection component and a measuring component detachably connected to the detection component. The detection component includes a first detection element 1 and a second detection element 2. The first detection element 1 includes a first finger sleeve 11 and a catheter 12 connected to the lower end of one side of the first finger sleeve 11. The upper end of the first finger sleeve 11 has a wire hole 121 communicating with the catheter 12. The catheter 12 can be made of a rigid tube that can be bent to a certain extent, so that the catheter 12 can be bent into a shape that adapts to the physiological curvature of women.

[0036] The second detection component 2 includes a second finger sleeve 21, a cable 22 connected to the upper end of one side of the second finger sleeve 21, and a limiting component 23 located at the end of the cable 22 away from the second finger sleeve 21. The cable 22 passes through the wire hole 121 and the conduit 12.

[0037] The finger sleeve can be ring-shaped as in this embodiment, or it can be other shapes that are conducive to detection, such as a cylindrical shape with a rounded and closed front end and a circular opening at the rear end.

[0038] Since the dilation diameter of a woman's cervix is ​​usually around 10cm, the length of the cable 22 should be such that the length of the cable 22 extending out of the catheter 12 after the second finger sleeve 21 approaches the first finger sleeve 11 is greater than 10cm. Of course, it can also be adjusted according to the actual application.

[0039] The measuring components include a fixed component 3, a moving component 4, and an elastic component 5. The fixed component 3 includes a measuring cylinder 31 and a fixed rod 32 located at the lower end of the measuring cylinder 31 and extending to the right. The measuring cylinder 31 has a vertical sliding groove 311 that runs through the left and right sides. The lower end of the fixed rod 32 has a first limiting groove 321 for the insertion of the limiting component 23. The top wall of the first limiting groove 321 has a first wire passage groove 322 for the cable 22 to pass through. The side of the fixed rod 32 has a first guide groove 323 that communicates with the first wire passage groove 322 and the first limiting groove 321.

[0040] The moving part 4 includes a slider 411 that is longitudinally slidably assembled in the measuring cylinder 31, a moving rod 412 that is disposed on the slider 411 and extends to the right through the vertical sliding groove 311, and a toggle member 423 that is disposed on the slider 411 and extends to the left through the vertical sliding groove 311. The upper end of the moving rod 412 is provided with a second limiting groove 4121 for the insertion of the conduit 12. The bottom wall of the second limiting groove 4121 is provided with a second wire passage groove 4122 for the cable 22 to pass through. The side of the moving rod 412 is provided with a second guide groove 4123 that communicates with the second wire passage groove 4122 and the second limiting groove 4121.

[0041] In this embodiment, the elastic element 5 is a helical spring, which is set inside the measuring cylinder 31 and located between the slider 411 and the fixed rod 32. The elastic element 5 can push the slider 411 upward under its own elastic force so that the moving element 4 is kept in a high position.

[0042] Before use, the detector's detection and measurement components need to be assembled. The assembly method for this detector involves the following three steps:

[0043] Step 1: Preparation for assembling the testing components. Specifically, place the first finger sleeve 11 and the second finger sleeve 21 on the front end of the index and middle fingers of the medical staff's right hand, respectively. At the same time, place the cable 22 and the catheter 12 on one side of the palm and keep them facing the arm. Then raise the right hand so that the cable 22 and the catheter 12 are suspended vertically. In this state, bring the index and middle fingers together so that the first finger sleeve 11 and the second finger sleeve 21 abut against each other, and let the limiting member 23 fall to its lowest position. This completes the preparation for assembling the testing components.

[0044] Step two, preparation for assembling the measuring components. Specifically, the medical staff holds the measuring cylinder 31 with their left hand, keeping the moving rod 412 and the fixed rod 32 facing to the right and keeping them vertically distributed. Then, they use their left thumb to push the actuating element 423 downward, causing the actuating element 423 to drive the slider 411 and the moving rod 412 to move downward against the elastic force of the elastic element 5. After the distance between the upper end of the moving rod 412 and the lower end of the fixed rod 32 is less than the length of the cable 22 extending downward from the catheter 12, the moving rod 412 is kept in this position. This completes the preparation for assembling the measuring components.

[0045] Step 3: Assemble the detection and measurement components. During assembly, bring the fixed rod 32 and the movable rod 412 close to the cable 22, allowing the upper part of the lower extension of the cable 22 to enter the second limiting groove 4121 and the second wire passage groove 4122 through the second guide groove 4123. At the same time, allow the lower part of the lower extension of the cable 22 to enter the first limiting groove 321 and the first wire passage groove 322 through the first guide groove 323. Then, gradually release the actuating member 423, causing the fixed rod 32 and the movable rod 412 to move in opposite directions under the rebound action of the elastic member 5. This allows the limiting member 23 to be engaged in the first limiting groove 321, and at the same time, allows the lower end of the guide tube 12 to be engaged in the second limiting groove 4121. Under this limiting action, the guide tube 12 will not be able to disengage laterally from the second limiting groove 4121, and similarly, the limiting member 23 will not be able to disengage laterally from the first limiting groove 321. At this time, the cable 22 is in a taut state. Thus, the assembly of the detection and measurement components is completed.

[0046] In use, medical staff insert their right index and middle fingers into the mother's birth canal. Before the index and middle fingers are inserted into the cervix, the distance between the fixed rod 32 and the moving part 4 is recorded as L1. Then, the index and middle fingers are allowed to enter the cervix and are slowly separated to check the degree of cervical dilation. In this way, the second finger sleeve 21 will gradually move away from the first finger sleeve 11. During this process, the upper end of the cable 22 will gradually extend out of the wire hole 121 under the pulling action of the second finger sleeve 21, and the lower end of the cable 22 will drive the fixed rod through the limiting part 23. As the fixed rod 32 slides upward relative to the movable rod 412, the distance between the fixed rod 32 and the movable rod 412 gradually decreases under the pulling action of the cable 22. When the medical staff feels the maximum degree of cervical dilation through their index and middle fingers, the distance between the fixed rod 32 and the movable rod 412 at this time is recorded as L2. By subtracting L1 from L2 and then adding the outer diameter of the first finger sleeve 11 and the second finger sleeve 21, a more accurate cervical dilation size can be obtained. Such accurate measurement of cervical dilation helps doctors to accurately judge the progress of labor.

[0047] It is worth mentioning that when the index and middle fingers are spread open for testing, the elastic element 5 will be compressed. Correspondingly, when the index and middle fingers are closed, the elastic element 5 will rebound to assist the closing of the index and middle fingers, while keeping the cable 22 taut. In this way, medical staff can repeatedly open and close their fingers to obtain multiple sets of test data, thereby further improving the accuracy of the test data.

[0048] After use, medical staff remove the finger from the birth canal. At this point, the medical staff can position the measuring device on the right side of the arm and then push the catheter 12 towards the first finger cot 11 using the measuring device, causing the first finger cot 11 and the second finger cot 21 to detach from the corresponding finger. This allows the measuring device to be removed from the right hand without the left hand directly contacting it. Alternatively, the medical staff can position the measuring device in front of the right fingertip, that is, on the side of the palm away from the arm, and then pull the catheter 12 forward using the measuring device, causing the first finger cot 11 and the second finger cot 21 to detach from the corresponding finger. This also allows the measuring device to be removed from the right hand without the left hand directly contacting the measuring device, thus avoiding contamination of the left hand with bodily fluids on the measuring device.

[0049] When the detection component needs to be removed from the measuring component, medical staff can manipulate the measuring component with their left hand to place it in an inverted state with the fixed rod 32 facing upwards and the movable rod 412 facing downwards. This means the detection component is in an inverted state with the two finger sleeves facing downwards and the limiting member 23 facing upwards. In this state, the medical staff can use their left thumb to move the actuating member 423 towards the fixed rod 32, i.e., upwards. This reduces the distance between the movable rod 412 and the fixed rod 32. At this time, because the limiting member 23 will be suspended in the first limiting groove 321 under gravity, as the distance between the movable rod 412 and the fixed rod 32 decreases, the catheter 12 will exit the second limiting groove 4121 relative to the movable rod 412. After it exits, the upper part of the measuring component can be controlled to tilt towards the second guide groove 4123. The measuring component is tilted so that the cable 22 exits the second wire passage 4122 and the second guide groove 4123 under the gravity of the measuring component. In this way, the moving rod 412 is disconnected from the measuring component. Then, the measuring component is controlled to continue to rotate towards the first guide groove 323 until the measuring component is in the upright position with the moving rod 412 facing up and the fixed rod 32 facing down. During this process, the cable 22 will exit the first wire passage 322 and the first guide groove 323 under the gravity. Similarly, the limiting member 23 will exit the first limiting groove 321 under the gravity. In this way, the entire measuring component is detached from the measuring component. Through this operation, the measuring component can be removed from the measuring component without the hand directly touching the measuring component, so as to avoid the left hand directly contacting the body fluid on the measuring component and being contaminated by the body fluid.

[0050] It is worth mentioning that during the above-mentioned use, neither the measuring component nor the left hand will be contaminated by bodily fluids. This reduces the intensity of disinfection of the measuring component and the left hand, and also reduces the risk of germ transmission.

[0051] Furthermore, since only the detection component of the entire detector comes into contact with the mother, and the structure of the detection component is relatively simple and the manufacturing cost is low, the detection component can be used as a disposable item. In this way, a safer detection service can be provided to mothers at a lower cost.

[0052] It should also be emphasized that the detector still requires medical staff to insert their fingers into the body for testing. In this way, in addition to detecting cervical dilation, other gynecological items can also be detected at the same time, such as cervical consistency, whether there are polyps or tumors, etc.

[0053] In some cases, when medical staff perform cervical dilation testing, they also need to collect some bodily fluid samples. That is, the medical staff's left hand needs to hold the sample collection device, such as a test tube, while the right hand needs to hold the sample collection device, such as a cotton swab. Therefore, in order to allow medical staff to hold the measuring device and the test tube at the same time, this embodiment also makes the following design. Specifically, the upper end of the slider 411 is provided with a first placement groove 4111. The actuating member 423 includes a slide seat 4231 and a squeezing block 4232. The slide seat 4231 is located at the left end of the slider 411. The left end of the slide seat 4231 is provided with a transverse sliding groove 42311 that communicates with the first placement groove 4111. The squeezing block 4232 is laterally slidably assembled in the transverse sliding groove 42311. The squeezing block 4232 cannot completely slide out of the transverse sliding groove 42311.

[0054] In use, the measuring component can be slightly tilted to the left, causing the squeezing block 4232 to slide to the left under gravity, thus completely disengaging the right end of the squeezing block 4232 from the first placement slot 4111. The test tube can then be inserted into the first placement slot 4111 through the upper end of the measuring cylinder 31. After insertion, the squeezing block 4232 can be pushed to the right using the left thumb to clamp the test tube. At the same time, the measuring cylinder 31 is also held firmly. Therefore, medical personnel can hold the test tube while simultaneously holding the measuring component. It is worth noting that while pressing the squeezing block 4232 to the right to clamp the test tube, the squeezing block 4232 can also be controlled to slide up and down. This means that the squeezing block 4232 controls the actuator 4 to clamp the test tube while simultaneously moving the test tube up and down. Thus, cervical dilation testing can be performed while simultaneously sampling bodily fluids, and the cervical dilation test is not affected by the test tube, making it more convenient to use.

[0055] In this embodiment, the extrusion block 4232 has a limiting groove 4233 parallel to the sliding direction of the extrusion block 4232. The slide block 4231 is threadedly connected to a limiting rod 4234 extending into the limiting groove 4233. Thus, by the limiting rod 4234 cooperating with the limiting groove 4233, the extrusion block 4232 can be prevented from completely sliding out of the transverse groove 42311. In this embodiment, the left end of the extrusion block 4232 has a push button 4235. The push button 4235 has an inclined surface that slopes from bottom to top and from left to right, and the inclined surface has a protective protrusion. This increases the coefficient of friction, making it easier for the user to control the movement of the extrusion block 4232.

[0056] In this embodiment, the vertical sliding groove 311 penetrates the upper end of the measuring cylinder 31. The measuring component also includes a cap 6 threadedly connected to the outer side of the upper end of the measuring cylinder 31 to close the upper end of the vertical sliding groove 311. The upper end of the cap 6 has a second placement through groove 61 that matches the first placement through groove 4111. This arrangement facilitates the assembly of various components inside the measuring cylinder 31. The second placement through groove 61 is provided to allow space for the insertion of the test tube. It is worth mentioning that the top inner side of the cap 6 has a support cylinder 62 for supporting the inner side of the measuring cylinder 31. The support cylinder 62 can support the upper inner side of the measuring cylinder 31 so that the support cylinder 62 can maintain a stable cylindrical shape. In addition, the side of the cap 6 has several anti-slip protrusions 63. This arrangement can increase the friction coefficient of the side of the cap 6 to facilitate the user's twisting.

[0057] In this embodiment, the measuring cylinder 31 is made of transparent material, and measuring scale lines are provided on the side of the measuring cylinder 31. This design facilitates readings by medical personnel, enabling efficient measurement. It is worth mentioning that the measuring cylinder 31 and the fixed rod 32 are integrally molded, making the structure stable, reliable, sturdy, and durable.

[0058] In summary, this invention discloses a detector for measuring cervical dilation before delivery. The detector is a split device, and the measurement can obtain a relatively accurate reading by inserting the detection component into the body. Such accurate measurement of cervical dilation helps doctors to accurately judge the progress of labor. In addition, since only the detection component of the entire detector comes into contact with the mother, and the structure of the detection component is relatively simple and the manufacturing cost is low, the detection component can be used as a disposable item. In this way, a safer detection service can be provided to the mother at a lower cost.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A detector for measuring cervical dilation before delivery, characterized in that: The device includes a detection component and a measuring component detachably connected to the detection component. The detection component includes a first detection element and a second detection element. The first detection element includes a first finger sleeve and a conduit connected to the lower end of one side of the first finger sleeve. The upper end of the first finger sleeve has a wire hole communicating with the conduit. The second detection element includes a second finger sleeve, a cable connected to the upper end of one side of the second finger sleeve, and a limiting element provided at the end of the cable away from the second finger sleeve. The cable passes through the wire hole and the conduit. The measuring component includes a fixed component, a moving component, and an elastic component. The fixed component includes a measuring cylinder and a fixed rod located at the lower end of the measuring cylinder and extending to the right. The measuring cylinder has a vertical sliding groove that runs through the left and right sides. The lower end of the fixed rod has a first limiting groove for the insertion of the limiting component. The top wall of the first limiting groove has a first wire passage groove for the cable to pass through. The side of the fixed rod has a first guide groove that communicates with the first wire passage groove and the first limiting groove. The moving part includes a slider that is longitudinally slidably assembled in the measuring cylinder, a moving rod disposed on the slider and extending to the right through the vertical sliding groove, and a toggle member disposed on the slider and extending to the left through the vertical sliding groove. The upper end of the moving rod has a second limiting groove for the insertion of the conduit. The bottom wall of the second limiting groove has a second wire passage groove for the cable to pass through. The side of the moving rod has a second guide groove communicating with the second wire passage groove and the second limiting groove. The elastic member is disposed in the measuring cylinder to push the moving part away from the fixed rod.

2. The detector for measuring cervical dilation before delivery according to claim 1, characterized in that: The upper end of the slider is provided with a first placement through groove. The actuating component includes a slide block and a pressing block. The slide block is located at the left end of the slider. The left end of the slide block is provided with a transverse sliding groove that communicates with the first placement through groove. The pressing block is slidably assembled in the transverse sliding groove.

3. The detector for measuring cervical dilation before delivery according to claim 2, characterized in that: The extrusion block cannot completely slide out of the transverse groove.

4. The detector for measuring cervical dilation before delivery according to claim 3, characterized in that: The extrusion block has a limiting groove that is parallel to the sliding direction of the extrusion block, and the slide block has a limiting rod that extends into the limiting groove.

5. The detector for measuring cervical dilation before delivery according to claim 2, characterized in that: The left end of the extrusion block has a push button.

6. The detector for measuring cervical dilation before delivery according to claim 1, characterized in that: The vertical sliding groove extends through the upper end of the measuring cylinder. The measuring component also includes a cap threaded to the outside of the upper end of the measuring cylinder for sealing the upper end of the vertical sliding groove. The upper end of the cap has a second placement groove that matches the first placement groove.

7. The detector for measuring cervical dilation before delivery according to claim 6, characterized in that: The top inner side of the cover is provided with a support cylinder for supporting the inner side of the measuring cylinder.

8. The detector for measuring cervical dilation before delivery according to claim 6, characterized in that: The side of the cover has several anti-slip protrusions.

9. The detector for measuring cervical dilation before delivery according to claim 1, characterized in that: The measuring cylinder is made of transparent material, and measuring scale lines are provided on the side of the measuring cylinder.

10. The detector for measuring cervical dilation before delivery according to claim 1, characterized in that: The measuring cylinder and the fixed rod are integrally formed.

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