Self-adaptive antenatal pelvis dynamic training system based on obstetrics and gynecology department

Abstract

The invention discloses a self-adaptive antenatal pelvis dynamic training system based on the obstetrics and gynecology department, relates to the field of antenatal rehabilitation instruments, and solves the problems that an existing instrument is poor in safety, low in precision and lack of dynamic training. The system comprises an adjustable supporting base (comprising an anti-skid suction cup and a threaded lifting rod), a self-adaptive cabin (comprising a pressure sensing layer, eight independent air chamber airbag layers and an antibacterial memory sponge surface layer), a mechanical traction mechanism (comprising a servo motor, a multi-dimensional adjusting guide rail and a silica gel traction belt) and a control system. The control system adjusts the air pressure and traction force of the air bag according to the pressure signal, precise control over the pelvis front rake angle ranging from 20 degrees to 30 degrees and the opening and closing amplitude ranging from 8 cm to 12 cm is achieved, and the dynamic load larger than 50 N is simulated. The system is high in safety, high in adaptability, capable of improving the symphysis pubis expansion capacity and reducing the probability of complications such as parturition prolonging and perineal tearing, and suitable for prenatal pelvic training.

Description

Technical Field

[0001] This invention relates to the field of prenatal rehabilitation equipment technology, specifically an adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology. Background Technology

[0002] Prenatal pelvic training is an important part of perinatal rehabilitation in obstetrics and gynecology. Its core goal is to improve the elasticity of pelvic ligaments, optimize the anterior pelvic tilt angle (medical standard 20°~30°) and the opening and closing range (medical standard 8~12cm) through scientific training, and enable the sacroiliac joint to adapt to the dynamic load of >50N during childbirth. Ultimately, it ensures that the pubic symphysis expands sufficiently (>10mm) during childbirth, reducing abnormal labor and soft tissue damage.

[0003] However, current prenatal pelvic training devices on the market have significant technical deficiencies and are unable to meet clinical needs: Traditional yoga ball equipment lacks a rigid support structure and movement trajectory constraints, making pregnant women prone to falls due to shifted center of gravity; it also cannot precisely control the anterior pelvic tilt angle and opening and closing range, and the training effect depends on the pregnant woman's subjective perception, which can easily lead to training deviations. Existing pelvic support belts use elastic fabric to statically bind the pelvis, which can only passively support the weight of the abdomen and cannot simulate the dynamic load (>50N) required by the sacroiliac joint during childbirth. This results in a lack of elastic adaptation training for the pelvic ligaments and insufficient ligament laxity. Poor biomechanical adaptability: Most devices do not take into account the individual differences of pregnant women (such as height, pelvic width, and leg length), and cannot dynamically adapt to the sitting posture and force requirements of different pregnant women. According to statistics from the 2024 Journal of Perinatal Rehabilitation Medicine, 67% of pregnant women experienced pubic symphysis expansion <10mm during delivery due to insufficient adaptability of training devices, which led to complications such as prolonged labor (average extension of 1.5 to 2 hours) and perineal tear (the rate of second-degree and above tears increased by 35%), seriously affecting the safety of mother and baby.

[0004] Therefore, developing a prenatal pelvic training system that combines safety, accuracy, and dynamic adaptability has become an urgent technical problem to be solved in the field of obstetric and gynecological rehabilitation equipment.

[0005] In view of this, the present invention proposes an adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology, which solves the above-mentioned technical problems. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology. This system is suitable for prenatal pelvic ligament elasticity training, pelvic opening and closing range adjustment, and sacroiliac joint dynamic load adaptation training for pregnant women, which can reduce the probability of complications such as prolonged labor and perineal tearing during childbirth.

[0007] The technical solution adopted by the present invention to solve its technical problem is an adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology, including an adjustable support base.

[0008] An adaptive cockpit is mounted on the adjustable support base. From bottom to top, the adaptive cockpit includes a pressure sensing layer, an airbag layer with multiple independent air chambers, and a memory foam surface layer. A mechanical traction mechanism, mounted on the adjustable support base, is used to provide controllable traction force to the user's pelvis; The system is electrically connected to the pressure sensing layer, the airbag layer, and the mechanical traction mechanism, and is used to adaptively adjust the air pressure in each air chamber and control the traction force according to the pressure signal.

[0009] In one embodiment, the adjustable support base includes an anti-slip suction cup bracket at the bottom, a threaded lifting rod in the middle for height adjustment, and a receiving part at the top for supporting the adaptive cockpit.

[0010] In one embodiment, an air pump is fixedly installed on the side wall of the adjustable support base, and an air passage is opened through the base and the lifting rod. The output port of the air pump is connected to the physical air pressure valve of each independent air chamber of the airbag layer through the air passage.

[0011] In one embodiment, the surface of the memory foam is covered with a medical antibacterial fabric.

[0012] In one embodiment, the pressure sensing layer is provided with multiple pressure sensors, and the multiple pressure sensors are configured one-to-one with the multiple independent air chambers of the airbag layer.

[0013] In one embodiment, the mechanical traction mechanism includes at least two symmetrically arranged servo motors, the servo motors being fixedly mounted on the adjustable support base, a high-elasticity medical silicone traction belt driven by the servo motors, and a pelvic fixation strap connected to the end of the traction belt.

[0014] In one embodiment, the mechanical traction mechanism further includes a circumferential "T"-shaped guide rail fixedly installed at the bottom of the pressure sensing layer, a traction slide plate slidably installed on the guide rail, and a servo motor fixedly installed on the traction slide plate.

[0015] In one embodiment, the mechanical traction mechanism further includes a traction push rod slidably mounted on the traction plate and a collar fixedly mounted on the end of the traction push rod and extending to the outside of the cabin. The traction belt extends along the guide rod, which is rotatably mounted inside the collar and fixed to the collar by a locking buckle.

[0016] In one embodiment, the traction slide plate and the guide rail, the traction push rod and the traction slide plate, and the sleeve and the collar are all locked and fixed by locking screws.

[0017] In one embodiment, the adjustable support base further includes a central cylinder rotatably mounted in the middle of the base, the inner wall of the central cylinder being provided with an internal thread, the bottom of the threaded lifting rod being provided with an external thread that meshes with the internal thread, and a rotating handle provided at the end of the central cylinder for driving its rotation.

[0018] In one embodiment, the top of the threaded lifting rod is rotatably connected to the bottom of the pressure sensing layer via a connecting block, and a vibration damping pad is provided between the connecting block and the threaded lifting rod.

[0019] The beneficial effects of this invention are significant compared to existing technologies: the anti-slip suction cup bracket and preset trajectory traction eliminate the risk of falls, and the vibration damping pad buffers vibrations to improve safety; through pressure sensing and closed-loop control system, the anterior pelvic tilt angle is precisely controlled at 20° to 30° and the opening and closing range is 8 to 12cm, simulating a dynamic load of >50N, filling the gap in static training; multiple adjustable parts adapt to pregnant women of different heights, pelvic widths, and leg lengths, and the antibacterial fabric is removable and washable to ensure hygiene; it can improve the expansion range of the pubic symphysis, reduce the incidence of prolonged labor and perineal tearing, and is suitable for prenatal training in multiple scenarios. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the overall connection structure of the present invention; Figure 2 for Figure 1 Front view diagram; Figure 3 for Figure 1 A diagram showing the view from below; Figure 4 This is a schematic diagram showing the positional layout of the base and suction cup bracket. Figure 5 This is a schematic diagram of the hierarchical layout of the adaptive cockpit; Figure 6 for Figure 5 Enlarged diagram of point A in the diagram; Figure 7 A schematic diagram showing the layout of the base and the pressure sensing layer; Figure 8 for Figure 7 Enlarged diagram of point B in the diagram; In the picture: 1. Base; 2. Suction Cup Bracket; 3. Lifting Rod; 4. Adaptive Cockpit; 5. Air Pump; 41. Pressure Sensing Layer; 42. Airbag Layer; 43. Memory Foam Surface Layer; 44. Pressure Sensor; 11. Airway; 411. Servo Motor; 412. Traction Belt; 4121. Hook Tooth; 413. Guide Rail; 414. Traction Slide Plate; 415. Traction Push Rod; 416. Collar; 417. Collar Plate; 418. Locking Buckle; 419. Guide Rod; 410. Fixing Screw; 12. Central Cylinder; 13. Armrest; 31. Connecting Block; 32. Vibration Damping Pad. Detailed Implementation

[0022] To make the technical means, creative features, objectives, and effects of this invention easier to understand, the following is a summary. The present invention will be further described in conjunction with specific embodiments.

[0023] This invention provides an adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology, suitable for pregnant women to perform prenatal pelvic ligament elasticity training, pelvic opening and closing range adjustment, and sacroiliac joint dynamic load adaptation training, which can reduce the probability of complications such as prolonged labor and perineal tearing during childbirth.

[0024] Example 1: Please refer to Figures 1 to 5 As shown, the training system of this embodiment includes an adjustable support base 1, an adaptive cockpit 4, a mechanical traction mechanism, and a control system. The adjustable support base 1 provides basic support for the system. The adaptive cockpit 4 is detachably mounted on the top support of the adjustable support base 1. There are two sets of mechanical traction mechanisms, which are symmetrically fixed on the left and right sides of the adjustable support base 1. The control system is integrated into the control box on the side wall of the adjustable support base 1 (not shown in the figure). It is electrically connected to the pressure sensor 44 of the pressure sensing layer 41, the physical air pressure valve of the airbag layer 42, the air pump 5, and the servo motor 411 through wires to realize signal acquisition and motion control.

[0025] Please see Figures 1 to 5 As shown, the specific structure and assembly of the adjustable support base 1 are as follows: Anti-slip suction cup bracket 2: Made of nitrile rubber, there are 4 in total, which are distributed in a rectangular shape at the four corners of the bottom of the base 1. The suction area of ​​each suction cup bracket 2 is 150cm². By manually pressing to expel the internal air, a vacuum suction is formed, so that the static friction between the base 1 and the ground is ≥500N, thus preventing displacement during training. Please see Figure 7 and Figure 8As shown, the central cylinder 12 and the threaded lifting rod 3 are as follows: The central cylinder 12 is made of stainless steel, with an outer diameter of 80mm and an inner diameter of 60mm. It is rotatably installed in the mounting hole in the middle of the base 1 via a bearing. The rotating armrest 13 (covered with anti-slip rubber) is fixed to the outer wall of the central cylinder 12. The threaded lifting rod 3 is made of stainless steel, with an outer diameter of 60mm. The outer wall is machined with M16×2 external threads, which mesh with the internal threads of the central cylinder 12. The lifting stroke of the threaded lifting rod 3 is 100-200mm, which can meet the sitting height requirements of pregnant women with a height of 150cm-180cm. Please see Figure 7 and Figure 8 As shown, the connecting block 31 and the vibration damping pad 32 are as follows: The connecting block 31 is made of nylon and is fixed to the bottom of the pressure sensing layer 41 by bolts. The bottom of the connecting block 31 has a circular groove, and the top of the threaded lifting rod 3 is embedded in the groove and connected by a rotating shaft; The vibration damping pad 32 is made of polyurethane with a thickness of 10mm. It is sleeved between the top of the threaded lifting rod 3 and the connecting block 31, and the compression can reach 5mm. It can absorb the vibration acceleration ≤0.5g during training. Please see Figure 2 , Figure 7 and Figure 8 As shown, the air pump 5 and the air passage 11 are as follows: The air pump 5 is a miniature silent air pump with a rated power of 12W and an output pressure range of 0 to 0.3MPa. It is fixed to the side wall of the base 1 by screws. The air passage 11 is embedded in the internal preset channel of the base 1 and the threaded lifting rod 3. One end is connected to the output port of the air pump 5, and the other end is branched to the physical air pressure valves of the 8 independent air chambers of the airbag layer 42 (each branch pipe is equipped with a solenoid valve, which is controlled by the control system to open and close).

[0026] Please see Figures 4 to 5 As shown, the specific structure and assembly of the adaptive cockpit 4 Pressure sensing layer 41: Employs a flexible pressure sensor array (model FSR402), consisting of 8 pressure sensors 44, evenly distributed circumferentially on a circular pressure sensing layer 41 with a diameter of 350mm. The circular pressure sensing layer 41 is made of ABS plastic with a thickness of 5mm. Each pressure sensor 44 has a detection range of 0~100N and an accuracy of ±2%. It is connected to the control system via wires, with a sampling frequency of 10Hz, and can transmit pressure values ​​of each area in real time. Airbag layer 42: Made of medical PVC film (0.2mm thick) by hot pressing, divided into 8 independent fan-shaped air chambers (each air chamber has a central angle of 45° and a volume of 500cm³). Each air chamber is equipped with a physical air pressure valve (SMCAR series). The air pressure valve is connected to the air pump 5 through the air passage 11. The control system controls the opening and closing of the air pressure valve of the corresponding air chamber according to the signal of the pressure sensor 44, and adjusts the air pressure range from 0.05 to 0.2MPa to achieve dynamic adaptation of the zoned support force. Memory foam surface layer 43: It uses slow rebound foam with a density of 40kg / m³ and a thickness of 30mm. It is covered with medical antibacterial fabric (made of combed cotton, treated with antibacterial properties, with an antibacterial rate of ≥99%). The fabric is fixed to the foam with Velcro, making it easy to remove and clean.

[0027] Please see Figures 3 to 7 As shown, the specific structure and assembly of the mechanical traction mechanism Guide rail 413 and traction slide plate 414: Guide rail 413 is a "T"-shaped stainless steel guide rail, which is fixed circumferentially in the annular groove at the bottom of pressure sensing layer 41, and the surface is chrome-plated (roughness Ra≤0.8μm); traction slide plate 414 is made of nylon, with a "T"-shaped groove on one side for sliding cooperation with guide rail 413, and a motor mounting bracket on the other side of traction slide plate 414 for fixing servo motor 411; traction slide plate 414 has a locking screw 410 (model M8) on the side, which can lock the slide plate in any position on guide rail 413 after tightening, with an adjustment range of 1 / 4 of the guide rail circumference (corresponding to pelvic opening and closing range of 8-12cm). Traction push rod 415 and collar 416: The traction push rod 415 is a stainless steel rod (12mm in diameter and 200mm in length), which is slidably fitted into the radial through hole of the traction slide plate 414. The end of the push rod is welded with a collar 416. The side of the traction push rod 415 is provided with a stop screw 410, which can adjust the extension length of the push rod radially (adjustment range 50-150mm) to suit pregnant women with different leg lengths. Sleeve disc 417 and guide rod 419: Sleeve disc 417 is a stainless steel disc, which is rotatably mounted in collar 416 via bearings and can rotate 360°. Guide rod 419 is made of engineering plastic (8mm in diameter and 300mm in length), and its lower part is fixed to sleeve disc 417 via locking buckle 418 (plastic material with snap-fit ​​structure). The upper part of the rod is inclined at 18°. When the locking buckle 418 is released, guide rod 419 can extend and retract radially along sleeve disc 417 (adjustment range 50mm) to achieve fine adjustment of traction angle. Servo motor 411 and traction belt 412: Servo motor 411 is a DC servo motor (model Panasonic A6 series, rated torque 0.5N・m), and the output shaft is wound with a high-elasticity medical silicone traction belt 412 (width 20mm, thickness 2mm, breaking strength ≥500N); one end of the traction belt 412 is wound and fixed to the motor output shaft, and the other end passes through the guide surface at the top of the guide rod 419 and is connected to the pelvic fixation strap (nylon material, with Velcro adjustment buckle); the servo motor 411 is controlled by the control system and can output bidirectional progressive traction force (adjustment range 50N~100N, traction speed 0.5~2cm / s) to guide the pelvis to move along a preset trajectory.

[0028] System working process Height adjustment: Before the pregnant woman sits in the adaptive seat 4, she can turn the armrest 13 and adjust the height of the seat 4 to a comfortable sitting position (feet flat on the ground, thighs and calves at a 90° angle) by engaging the central cylinder 12 with the threaded lifting rod 3. Sitting posture adaptation: After the pregnant woman sits down, the eight pressure sensors 44 of the pressure sensing layer 41 collect the pressure signal of the buttocks. After the control system analyzes the signal, it drives the air pump 5 to adjust the air pressure of each air chamber of the airbag layer 42 through the air passage 11, so that the pressure in each area of ​​the buttocks is uniform (pressure difference ≤ 5N). Traction parameter settings: Adjust the position of the traction slide plate 414 on the guide rail 413 (set the initial value of opening and closing amplitude to 8mm) according to the pregnant woman's gestational age (e.g., 32-36 weeks of gestation) and pelvic width, the extension length of the traction push rod 415 (adapt to leg length) and the tilt angle position height of the guide rod 419, and lock them with the stop screw 410. Dynamic training: The control system starts the servo motor 411, which drives the traction belt 412 to output bidirectional progressive traction force (initially 50N, gradually increasing to 80N), guiding the pelvis to move along a predetermined trajectory and maintaining an anterior tilt angle of 25° (monitored by the pressure difference between the front and back of the pressure sensing layer 41). The opening and closing amplitude gradually increases from 8mm to 12mm. During the training process, the vibration damping pad 32 absorbs vibration, and the antibacterial fabric maintains hygiene. Training ends: Servo motor 411 stops working, traction belt 412 resets, pregnant woman gets up, and the antibacterial fabric of the removable memory foam surface layer 43 is cleaned.

[0029] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adaptive prenatal pelvic dynamic training system based on obstetrics and gynecology, characterized in that, include: Adjustable support base (1); An adaptive cockpit (4) is mounted on the adjustable support base (1). The adaptive cockpit (4) includes, from bottom to top, a pressure sensing layer (41), an airbag layer (42) with multiple independent air chambers, and a memory foam surface layer (43). A mechanical traction mechanism is provided on the adjustable support base (1) to provide controllable traction force to the user's pelvis; The system is electrically connected to the pressure sensing layer (41), the airbag layer (42) and the mechanical traction mechanism, and is used to adaptively adjust the air pressure of each air chamber and control the traction force according to the pressure signal.

2. The adaptive prenatal pelvic dynamic training system according to claim 1, characterized in that, The adjustable support base (1) includes: Anti-slip suction cup bracket (2) is set at the bottom; The threaded lifting rod (3) in the middle is used to achieve height adjustment; And a receiving part provided at the top for receiving the adaptive cockpit (4).

3. The adaptive prenatal pelvic dynamic training system according to claim 2, characterized in that, An air pump (5) is fixedly installed on the side wall of the adjustable support base (1). An air passage (11) is opened through the base (1) and the lifting rod (3). The output port of the air pump (5) is connected to the physical air pressure valve of each independent air chamber of the airbag layer (42) through the air passage (11).

4. The adaptive prenatal pelvic dynamic training system according to claim 1, characterized in that, The surface layer (43) of the memory foam is covered with a medical antibacterial fabric.

5. The adaptive prenatal pelvic dynamic training system according to claim 1, characterized in that, The pressure sensing layer (41) is provided with multiple pressure sensors (44), and the multiple pressure sensors (44) are arranged one-to-one with the multiple independent air chambers of the airbag layer (42).

6. The adaptive prenatal pelvic dynamic training system according to claim 1, characterized in that, The mechanical traction mechanism includes: At least two sets of servo motors (411) are symmetrically arranged, and the servo motors (411) are fixedly installed on the adjustable support base (1); A high-elasticity medical silicone traction belt (412) driven by the servo motor (411); And a pelvic fixation band connected to the end of the traction band (412).

7. The adaptive prenatal pelvic dynamic training system according to claim 6, characterized in that, The mechanical traction mechanism also includes: A circumferential "T"-shaped guide rail (413) is fixedly installed at the bottom of the pressure sensing layer (41). A traction slide plate (414) is slidably mounted on the guide rail (413). The servo motor (411) is fixedly mounted on the traction slide plate (414).

8. The adaptive prenatal pelvic dynamic training system according to claim 7, characterized in that, The mechanical traction mechanism also includes: A traction push rod (415) is slidably mounted on the traction slide plate (414). A collar (416) is fixedly installed at the end of the traction push rod (415) and extends to the outside of the cabin (4). Rotate the sleeve (417) installed inside the collar (416). And a guide rod (419) fixedly installed on the sleeve (417) by a locking buckle (418). The traction belt (412) extends along the guide rod (419).

9. The adaptive prenatal pelvic dynamic training system according to claim 8, characterized in that, The traction slide plate (414) and the guide rail (413), the traction push rod (415) and the traction slide plate (414), and the sleeve plate (417) and the collar (416) are all locked and fixed by the locking screw (410).

10. The adaptive prenatal pelvic dynamic training system according to claim 2, characterized in that, The top of the threaded lifting rod (3) is rotatably connected to the bottom of the pressure sensing layer (41) via a connecting block (31), and a vibration damping pad (32) is sleeved between the connecting block (31) and the threaded lifting rod (3).

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