An abdominal wall motion recording device

Abstract

This invention provides an abdominal wall motion recording device, including a reclining board, a column, a recording mechanism, and a writing block. A mounting block is located on one side of the top of the reclining board, and a first apex cone is mounted on the mounting block. The column is mounted on top of the mounting block, and a second apex cone is located at the bottom of the column. A spring-loaded box is located at the top of the column, and a measuring tape is located inside the spring-loaded box. One end of the measuring tape extends along the outer side of the column and is fixedly connected to the first apex cone. The recording mechanism includes a drive assembly and a writing tape. The writing tape is located between the outer side of the column and the measuring tape, and the drive assembly drives the writing tape to move. The writing block is connected to the measuring tape, and a recording pen is mounted on the writing block. This invention utilizes the synchronous movement of the measuring tape following the rise and fall of the patient's abdomen to present and record the patient's abdominal circumference fluctuations in a graphical form. This is beneficial for doctors to view the difference in abdominal circumference changes during each round of breathing and the overall trend of abdominal circumference changes over a certain period of time, helping doctors to monitor the patient's intra-abdominal pressure in real time.

Description

Technical Field

[0001] This invention relates to the field of abdominal pressure detection, and more specifically to an abdominal wall motion recording device. Background Technology

[0002] Many diseases in clinical practice can cause increased intra-abdominal pressure. Sustained increases in intra-abdominal pressure can lead to intra-abdominal hypertension, which typically occurs in 5% to 40% of patients with urinary disorders, especially high-risk surgical patients with urinary obstruction. Severe cases can lead to celiac syndrome. Celiac syndrome can cause changes in systemic hemodynamics and, through respiratory restriction, cause dysfunction of the circulatory, respiratory, urinary, and digestive systems. In severe cases, it can manifest as oliguria, anuria, dyspnea, and even multiple organ failure, endangering life. Therefore, postoperative care for some surgical patients, including the measurement and monitoring of changes in intra-abdominal pressure, is a crucial aspect of preventing postoperative complications and ensuring a smooth recovery.

[0003] When a patient's intra-abdominal pressure increases, the most obvious sign is usually an outward bulge of the abdomen. Therefore, measuring changes in abdominal circumference is one of the most direct methods for assessing intra-abdominal pressure. A patient's abdominal circumference changes with respiration, making intra-abdominal pressure a dynamic value. By analyzing the difference in abdominal circumference during each breath and the overall trend over a certain period, doctors can better understand the patient's intra-abdominal pressure. Currently, intra-abdominal pressure is commonly measured clinically using bladder pressure. However, monitoring changes in abdominal pressure requires multiple measurements, and it's impossible to track changes in abdominal pressure between measurements, which is detrimental to doctors' understanding of the patient's condition and has significant limitations. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention proposes an abdominal wall motion recording device to solve the problem that current conventional methods of monitoring abdominal pressure changes require multiple measurements and cannot capture the changes in abdominal pressure between two measurements, which is not conducive to doctors' understanding of the patient's condition and has significant limitations.

[0005] The objective of this invention is achieved through the following technical solution:

[0006] The present invention provides an abdominal wall motion recording device, comprising:

[0007] A reclining board, with a mounting block on one side of its top, and a first apical cone extending toward the center of the reclining board on the mounting block;

[0008] A column is installed on the top of the mounting block, and a through-slit is provided between its bottom end and the top of the mounting block. A second top cone is provided at the bottom end of the column, extending toward the extension end of the first top cone. A gap is left between the ends of the first top cone and the second top cone. A spring box is provided on the outer side of the top of the column. A ruler is wound up in the spring box. One end of the ruler extends movably out of the spring box, extends along the outer side of the column, passes through the through-slit, and is fixedly connected to the extension end of the first top cone.

[0009] A recording mechanism includes a drive assembly and a writing tape disposed between the outer side of a column and a ruler, the drive assembly being used to drive the writing tape to move in a direction perpendicular to the ruler; and

[0010] A writing block is detachably connected to the ruler strip. A recording pen is provided on the writing block, and the tip of the recording pen faces outward from the column and can abut against the surface of the column.

[0011] Furthermore, the drive assembly includes a mounting plate, a motor, a rotating shaft, and a fixed shaft. The two mounting plates are respectively mounted on both sides of the column. The motor is fixedly mounted on the bottom of one of the mounting plates. The motor shaft passes through the mounting plate axially and is axially connected to the rotating shaft. A first sleeve is movably sleeved on the outer side of the rotating shaft. A locking pin is provided on the outer side of the rotating shaft, and a slot adapted to the locking pin is provided on the inner side of the first sleeve. The fixed shaft is fixedly mounted on the top of the other mounting plate, and a second sleeve is movably sleeved on its outer side. One end of the writing tape is fixedly connected to the outer side of the first sleeve, and the other end is fixedly connected to the outer side of the second sleeve.

[0012] Furthermore, clips are respectively provided at the two edges of the outer side of the column between the two mounting plates. A gap is left between the two clips and the outer surface of the column. The writing tape is movably located in the gap. The bottom ends of the two clips are fixedly connected to the column by connecting strips. The top ends of the two clips facing the column are arc-shaped.

[0013] Furthermore, the writing block has a flat slit hole in the middle for the ruler to pass through. One side of the inner wall of the flat slit hole is magnetic, and the other side of the inner wall has an insertion hole that extends to the outside of the writing block. An insertion block is movably inserted into the insertion hole. One end of the insertion block is magnetic, and the other end is provided with a pull ring.

[0014] Furthermore, it also includes an alarm mechanism, which comprises a screw, a movable sleeve, and an alarm. The screw is fixedly installed on the outside of the column, located on one side of the writing block and parallel to the ruler. Two movable sleeves are respectively movably fitted onto the screw, and the writing block is located between the two movable sleeves. The sides of the two movable sleeves away from each other are respectively rotatably connected to threaded sleeves that are driven by the screw. One alarm is provided on each movable sleeve, and a first guide plate is provided on the side of the two alarms close to each other. The first guide plate is electrically connected to the inside of the alarm. A power source is also provided inside the writing block. A second guide plate is extended from the writing block towards the screw side. The second guide plate is electrically connected to the internal power source and can contact the two first guide plates respectively.

[0015] Furthermore, a rotating seat is provided on the outer side of the bottom end of the column, and two rollers are rotatably connected to the rotating seat. The surfaces of the two rollers are in contact with each other, and the measuring tape moves through the space between the two rollers, so that the measuring tape located on the outer side of the column is parallel to the outer surface of the column.

[0016] Furthermore, the second cone has abutment portions on both sides of its end, which can abut against the end of the first cone.

[0017] Furthermore, slots are provided on both sides of the top of the mounting block, and inserts that fit the slots are provided on both sides of the bottom of the column.

[0018] Furthermore, a strip groove is provided on the top of the lying board.

[0019] As can be seen from the above technical solution, the abdominal wall dynamics recording device provided by the present invention utilizes the synchronous movement of a ruler following the rise and fall of the patient's abdomen to perform real-time numerical monitoring of the dynamic changes in abdominal circumference. Through the writing block set on the ruler and the writing tape in the recording mechanism, the patient's abdominal circumference fluctuations can be presented and recorded in the form of a graph, which is beneficial for doctors to view the difference in abdominal circumference changes during each round of breathing and the overall trend of abdominal circumference changes over a certain period of time, helping doctors to grasp the patient's abdominal pressure in real time. With the use of an alarm mechanism, medical staff can be promptly alerted when the patient's abdominal pressure is abnormal, allowing medical staff to understand the patient's current condition in a timely manner. Attached Figure Description

[0020] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0021] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the abdominal wall motion recording device of the present invention;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 This is a side view of one embodiment of the abdominal wall motion recording device of the present invention.

[0024] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0025] Figure 5 This is a front view schematic diagram of an embodiment of the abdominal wall motion recording device of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure of the ends of the first and second apical cones in one embodiment of the abdominal wall motion recording device of the present invention;

[0027] Figure 7 This is a cross-sectional view of the writing block in one embodiment of the abdominal wall motion recording device of the present invention.

[0028] Figure label:

[0029] 1. Laying plate 1, mounting block 11, slot 111, first top cone 12, strip groove 13;

[0030] Column 2, through-hole 21, second top cone 22, abutting part 221, spring box 23, ruler belt 24, clamping strip 25, connecting strip 26, rotating wheel seat 27, roller 271, insert strip 28;

[0031] Recording mechanism 3, drive assembly 31, mounting plate 311, motor 312, rotating shaft 313, fixed shaft 314, first sleeve 315, second sleeve 316, writing tape 32;

[0032] Writing block 4, recording pen 41, flat slit hole 42, insertion hole 43, insertion block 44, second guide plate 45, pull ring 441;

[0033] Alarm mechanism 5, screw 51, movable sleeve 52, threaded sleeve 521, alarm 53, first guide plate 531. Detailed Implementation

[0034] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the invention; therefore, the invention is not limited to the specific embodiments disclosed below.

[0035] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly attached to the other element or there may be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0037] like Figure 1-7 As shown, the abdominal wall motion recording device provided in this embodiment includes a lying board 1, a column 2, a recording mechanism 3, and a writing block 4.

[0038] Please see Figure 1 , Figure 2 and Figure 5 The reclining board 1 can be placed on a hospital bed or examination bed, or it can directly replace the bed board for patients to lie flat. The upper surface of the reclining board 1 can be padded to improve patient comfort. A mounting block 11 is provided on one side of the top of the reclining board 1. A first top cone 12 extending toward the middle of the reclining board 1 is provided on the mounting block 11. In actual use, the extended end of the first top cone 12 is used to abut against the patient's body surface.

[0039] Please see Figures 1-3 as well as Figure 5The column 2 is installed on top of the mounting block 11, and a through-slit 21 is provided between its bottom end and the top end of the mounting block 11. Specifically, slots 111 are respectively provided on both sides of the top of the mounting block 11, and inserts 28 adapted to the slots 111 are respectively provided on both sides of the bottom end of the column 2. By inserting or removing the inserts 28 from the slots 111, the column 2 and the mounting block 11 can be detachably connected for convenient use. A second top cone 22 extending towards the extension end of the first top cone 12 is provided at the bottom end of the column 2, and a gap is left between the ends of the first top cone 12 and the second top cone 22. A spring box 23 is provided on the outer side of the top end of the column 2. A ruler 24 is wound up inside the spring box 23. One end of the ruler 24 extends movably out of the spring box 23, extends along the outer side of the column 2, passes through the through-slit 21, and is fixedly connected to the extension end of the first top cone 12. This connection end is the starting end of the scale of the ruler 24. It should be noted that a coil spring is provided inside the coil spring box 23. One end of the ruler 24 located inside the coil spring box 23 is wound and connected to the coil spring. The coil spring can provide an elastic tightening force to retract the ruler 24 into the coil spring box 23. Therefore, the ruler 24 will retract into the coil spring box 23 when it is not pulled by an external force, and will be pulled out of the coil spring box 23 when it is pulled by an external force.

[0040] It should be noted that the outer side of the upright 2 faces the outer side of the lying board 1.

[0041] In practical use, by removing the insert 28 from the bottom of the column 2 from the slot 111 and placing the column 2 on the other side of the reclining board 1 opposite to the mounting block 11, the measuring tape 24 is placed on the reclining board 1. The patient lies on the reclining board 1 with the measuring tape 24 located on the abdomen. The column 2 is then passed over the patient from above, and the insert 28 is reinserted into the slot 111. The patient's body is then placed against the extended end of the first apex cone 12, allowing the measuring tape 24 to provide a loop to accommodate the patient. The patient's abdomen can be placed within this loop and wrapped around the measuring tape 24. The inside of the coil spring box 23 will provide elastic force to tighten the measuring tape 24 and conform it to the patient's body. When the patient breathes, the rise and fall of the abdomen will cause the measuring tape 24 to move against the body surface. The scale on the measuring tape 24 located in the gap between the ends of the first apex cone 12 and the second apex cone 22 is the patient's abdominal circumference.

[0042] like Figure 6 As shown, in one embodiment, to prevent the measuring tape 24 from deviating from the gap between the ends of the first apex cone 12 and the second apex cone 22 during movement, abutment portions 221 are respectively provided on both sides of the end of the second apex cone 22. The abutment portions 221 can abut against the end of the first apex cone 12 to seal both sides of the gap between the ends of the first apex cone 12 and the second apex cone 22. It should be noted that the size of the gap between the ends of the first apex cone 12 and the second apex cone 22 should be just large enough for the measuring tape 24 to pass through, so as to reduce the error of the measured waist circumference value.

[0043] Furthermore, in order to prevent the measuring tape 24 from being pressed under the patient's body and affecting their movement, thus causing inaccurate abdominal circumference readings, preferably, the top of the lying board 1 is provided with a strip groove 13, so that the measuring tape 24 located under the patient's body can move in the strip groove 13. Specifically, the strip groove 13 should correspond to the lateral position of the first apex cone 12 and the second apex cone 22 on the lying board 1.

[0044] Please see Figures 1-3 The recording mechanism 3 includes a drive assembly 31 and a writing tape 32. The writing tape 32 can be a strip of paper or other writable material. The writing tape 32 is disposed between the outer side of the column 2 and the ruler 24. The drive assembly 31 is used to drive the writing tape 32 to move in a direction perpendicular to the ruler 24.

[0045] Furthermore, the drive assembly 31 includes a mounting plate 311, a motor 312, a rotating shaft 313, and a fixed shaft 314. The two mounting plates 311 are respectively mounted on both sides of the column 2. The motor 312 is fixedly mounted on the bottom of one of the mounting plates 311. The motor shaft of the motor 312 passes through the mounting plate 311 and is axially connected to the rotating shaft 313. A first sleeve 315 is movably sleeved on the outer side of the rotating shaft 313. A locking pin is provided on the outer side of the rotating shaft 313, and a slot adapted to the locking pin is provided on the inner side of the first sleeve 315, so that the rotating shaft 313 can drive the first sleeve 315 to rotate when it rotates. The fixed shaft 314 is fixedly mounted on the top of the other mounting plate 311, and a second sleeve 316 is movably sleeved on its outer side. One end of the writing tape 32 is fixedly connected to the outer side of the first sleeve 315, and the other end is fixedly connected to the outer side of the second sleeve 316.

[0046] In practical use, starting the motor 312 causes the rotating shaft 313 to drive the first sleeve 315 to rotate, thereby winding the writing tape 32. This causes the writing tape 32, located between the column 2 and the ruler 24, to move in a direction perpendicular to the ruler 32, allowing the writing block 4 to draw and record lines. The writing tape 32, wound on the second sleeve 316, is continuously fed towards the first sleeve 315. Furthermore, since the first sleeve 315 and the second sleeve 316 are respectively movably mounted on the rotating shaft 313 and the fixed shaft 314, and the top ends of both the rotating shaft 313 and the fixed shaft 314 have no limit on their movement, new first sleeve 315, second sleeve 316, and writing tape 32 can be quickly replaced for subsequent recording. Additionally, considering that the abdominal rise and fall of different patients during each breath is different, preferably, the width of the writing tape 32 has multiple size options. Determining the size of the writing tape 32 according to actual usage helps save material costs.

[0047] Because the writing tape 32 is made of a relatively soft material, to ensure that the writing tape 32 remains flat when passing between the column 2 and the ruler 24, facilitating recording by the writing block 4, preferably, clamping strips 25 are respectively provided at the two outer edges of the column 2 between the two mounting plates 311. A gap is left between the two clamping strips 25 and the outer surface of the column 2, allowing the writing tape 32 to move freely within this gap. The size of this gap is preferably just large enough for the writing tape 32 to pass through. The bottom ends of the two clamping strips 25 are fixedly connected to the column 2 via connecting strips 26. The two clamping strips 25 flatten the writing tape 32 at the inlet and outlet points between the column 2 and the ruler 24, respectively, preventing the writing tape 32 from folding between the two clamping strips 25. Furthermore, the top ends of the two clamping strips 25 facing the column 2 are arc-shaped to facilitate the insertion of new writing tape 32 when replacing it.

[0048] Please see Figures 1-3 , Figure 5 as well as Figure 7 The writing block 4 is detachably connected to the measuring tape 24. A recording pen 41 is mounted on the writing block 4, with the tip of the pen facing outwards from the column 2 and able to contact the surface of the column 2. It should be noted that the writing block 4 is detachably connected to the measuring tape 24 because different patients have different abdominal circumferences. Therefore, before recording, the measuring tape 24 needs to be wrapped around the patient's abdomen. After the measuring tape 24 fits the patient's abdomen, the writing block 4 is then installed on the measuring tape 24 at the position corresponding to the writing band 32, in order to record changes in abdominal circumference.

[0049] Specifically, the writing block 4 has a flat slit hole 42 in the middle for the ruler 24 to pass through. One inner wall of the flat slit hole 42 is magnetic, and the other inner wall has an insertion hole 43 that extends to the outside of the writing block 4. An insertion block 44 is movably inserted into the insertion hole 43. One end of the insertion block 44 is magnetic, and the other end has a pull ring 441. The magnetic end of the insertion block 44 and the magnetic inner wall of the flat slit hole 42 can attract each other, thereby fixing the writing block 4 to the ruler 24. The pull ring 441 allows for easy insertion and removal of the insertion block 44.

[0050] like Figure 2 and Figure 5As shown, in one embodiment, a rotating base 27 is provided on the outer side of the bottom end of the column 2. Two rollers 271 are rotatably connected to the rotating base 27, with the surfaces of the two rollers 271 in contact. The ruler 24 moves through the space between the two rollers 271, so that the ruler 24 located on the outer side of the column 2 is parallel to the outer surface of the column 2. This facilitates the smooth contact between the tip of the recording pen 41 and the surface of the writing tape 32 when the ruler 24 moves, preventing unstable contact between the tip of the recording pen 41 and the writing tape 32, which could lead to unclear recording or damage to the writing tape 32. At the same time, the rotating base 27 can lift the ruler 24 away from the surface of the column 2 through the rollers 271, effectively preventing the ruler 24 from moving and wearing on the surface of the column 2.

[0051] Please see Figures 1-5 In one embodiment, an alarm mechanism 5 is also included. The alarm mechanism 5 includes a screw 51, a movable sleeve 52, and an alarm 53. The screw 51 is fixedly installed on the outside of the column 2. Specifically, both ends of the screw are connected to the column 2 via connecting blocks. The screw 51 is located on one side of the writing block 4 and parallel to the ruler 24. Two movable sleeves 52 are respectively movably fitted onto the screw 51. The writing block 4 is located between the two movable sleeves 52. The sides of the two movable sleeves 52 away from each other are respectively rotatably connected to threaded sleeves 521 that are driven by the screw 51. The positions of the two movable sleeves 52 can be adjusted by rotating the threaded sleeves 521. The alarm 53 is activated at each movable sleeve. Each of the two alarms 53 is equipped with a first guide plate 531 on the side of the two alarms 52 that are close to each other. The first guide plate 531 is electrically connected to the inside of the alarm 53. The writing block 4 is also equipped with a power supply, which can be a battery. A second guide plate 45 is provided on the writing block 4 facing the screw 51. The second guide plate 45 is electrically connected to the internal power supply. The second guide plate 45 can contact the two first guide plates 531 respectively. When the second guide plate 45 contacts either of the first guide plates 531, the power supply will form an electrical connection with the corresponding alarm 53, providing power to the alarm 53 and causing the alarm 53 to sound an alarm.

[0052] In practical use, the positions of the two movable sleeves 52 and the writing block 4 can be adjusted to limit the movement range of the writing block 4. That is to say, the distance that the writing block 4 can move between the two movable sleeves 52 is the normal range of changes in the patient's abdominal circumference. Once the patient's abdominal pressure increases or decreases, causing it to be outside the normal range, the second guide plate 45 on the writing block 4 will contact a certain first guide plate 531, and the alarm 53 can issue an alarm in time to remind medical staff to pay attention.

[0053] The present invention provides an abdominal wall motion recording device, the method of use of which is as follows: The insert 28 at the bottom of the column 2 is removed from the slot 111, and the column 2 is placed on the other side of the reclining plate 1 opposite to the mounting block 11, so that the measuring tape 24 is placed on the reclining plate 1. The patient lies on the reclining plate 1 with the measuring tape 24 positioned on the abdomen. The column 2 is then passed over the patient's upper side, and the insert 28 is reinserted into the slot 111. The patient's body is then placed against the extended end of the first apex cone 12. The measuring tape 24 provides a loop to accommodate the patient, with the patient's abdomen located within this loop and wrapped around the measuring tape 24. The spring box 23 provides elastic force to tighten the measuring tape 24 and conform it to the patient's body. The position of the writing block 4 is adjusted so that the recording pen 41 corresponds to the writing tape 32. The positions of the two moving sleeves 52 are adjusted according to the patient's condition and the doctor's judgment. The motor 312 is started, causing the rotating shaft 313 to drive the first sleeve 315 to rotate, thereby winding the writing tape 32. The writing strip 32, located between the column 2 and the measuring strip 24, moves perpendicular to the measuring strip 32, allowing the writing block 4 to draw lines for recording. This allows for the detection and recording of changes in abdominal movement. During the recording process, the scale on the measuring strip 24, located in the gap between the ends of the first apex cone 12 and the second apex cone 22, represents the patient's abdominal circumference, which can be observed at any time. When the patient breathes, the rise and fall of the abdomen causes the measuring strip 24 to move against the body surface, simultaneously moving the writing block 4 back and forth on the writing strip 32. The tip of the recording pen 41 draws moving lines on the writing strip 32 to record the changes and fluctuations in the patient's abdominal circumference over a period of time, allowing medical staff to observe in real time. When the patient's abdominal pressure changes abnormally, the writing block 4 will move excessively, causing the second guide plate 45 to contact a certain first guide plate 531, thereby triggering the corresponding alarm 53 to alert medical staff.

[0054] This invention utilizes the synchronous movement of the measuring tape 24 following the rise and fall of the patient's abdomen to perform real-time numerical monitoring of the dynamic changes in abdominal circumference. Through the writing block 4 set on the measuring tape 24 and the writing tape 32 in the recording mechanism 3, the fluctuation of the patient's abdominal circumference can be presented and recorded in the form of a graph. This is beneficial for doctors to view the difference in abdominal circumference during each round of breathing and the overall trend of the patient's abdominal circumference over a certain period of time, helping doctors to grasp the patient's abdominal pressure in real time. The alarm mechanism 5 can promptly alert medical staff when the patient's abdominal pressure is abnormal, allowing medical staff to understand the patient's current condition in a timely manner.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered within the scope of the claims and specification of the present invention.

Claims

1. A device for recording abdominal wall movement, characterized in that, include: A reclining board, with a mounting block on one side of its top, and a first apical cone extending toward the center of the reclining board on the mounting block; A column is installed on the top of the mounting block, and a through-slit is provided between its bottom end and the top of the mounting block. A second top cone is provided at the bottom end of the column, extending toward the extension end of the first top cone. A gap is left between the ends of the first top cone and the second top cone. A spring box is provided on the outer side of the top of the column. A ruler is wound up in the spring box. One end of the ruler extends movably out of the spring box, extends along the outer side of the column, passes through the through-slit, and is fixedly connected to the extension end of the first top cone. A recording mechanism includes a drive assembly and a writing tape disposed between the outer side of a column and a ruler, the drive assembly being used to drive the writing tape to move in a direction perpendicular to the ruler; and A writing block is detachably connected to the ruler strip. A recording pen is provided on the writing block, and the tip of the recording pen faces outward from the column and can abut against the surface of the column.

2. The abdominal wall motion recording device according to claim 1, characterized in that, The drive assembly includes a mounting plate, a motor, a rotating shaft, and a fixed shaft. Two mounting plates are respectively installed on both sides of the column. The motor is fixedly installed at the bottom of one of the mounting plates. The motor shaft passes through the mounting plate axially and is axially connected to the rotating shaft. A first sleeve is movably sleeved on the outer side of the rotating shaft. A locking pin is provided on the outer side of the rotating shaft, and a locking groove adapted to the locking pin is provided on the inner side of the first sleeve. The fixed shaft is fixedly installed on the top of the other mounting plate, and a second sleeve is movably sleeved on its outer side. One end of the writing tape is fixedly connected to the outer side of the first sleeve, and the other end is fixedly connected to the outer side of the second sleeve.

3. The abdominal wall motion recording device according to claim 2, characterized in that, Clamping strips are respectively provided at the two edges of the outer side of the column between the two mounting plates. There is a gap between the two clamping strips and the outer surface of the column. The writing strip is movably located in the gap. The bottom ends of the two clamping strips are fixedly connected to the column by connecting strips. The top ends of the two clamping strips facing the column are arc-shaped.

4. The abdominal wall motion recording device according to claim 1, characterized in that, The writing block has a flat slit hole in the middle for the ruler to pass through. One side of the inner wall of the flat slit hole is magnetic, and the other side of the inner wall has an insertion hole that extends to the outside of the writing block. An insertion block is movably inserted into the insertion hole. One end of the insertion block is magnetic, and the other end is provided with a pull ring.

5. The abdominal wall motion recording device according to claim 1, characterized in that, It also includes an alarm mechanism, which comprises a screw, a movable sleeve, and an alarm. The screw is fixedly installed on the outside of the column, located on one side of the writing block and parallel to the ruler. Two movable sleeves are respectively movably fitted onto the screw, and the writing block is located between the two movable sleeves. The sides of the two movable sleeves away from each other are respectively rotatably connected to threaded sleeves that are driven by the screw. One alarm is provided on each movable sleeve, and a first guide plate is provided on the side of the two alarms close to each other. The first guide plate is electrically connected to the inside of the alarm. A power source is also provided inside the writing block. A second guide plate is extended from the writing block towards the screw, and the second guide plate is electrically connected to the internal power source. The second guide plate can contact the two first guide plates respectively.

6. The abdominal wall motion recording device according to claim 1, characterized in that, A rotating wheel seat is provided on the outer side of the bottom end of the column. Two rollers are rotatably connected to the rotating wheel seat. The surfaces of the two rollers are in contact with each other, and the measuring tape moves through the space between the two rollers, so that the measuring tape located on the outer side of the column is parallel to the outer surface of the column.

7. The abdominal wall motion recording device according to claim 1, characterized in that, The second cone has abutment portions on both sides of its end, which can abut against the end of the first cone.

8. The abdominal wall motion recording device according to claim 1, characterized in that, The mounting block has slots on both sides of its top, and the bottom of the column has inserts that fit the slots on both sides.

9. The abdominal wall motion recording device according to claim 1, characterized in that, The top of the lying board has a strip groove.

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