A medical auxiliary device for supporting lower limbs of infants and young children

Abstract

The application relates to a medical auxiliary device for supporting and preventing slipping of lower limbs of infants, belonging to the technical field of clinical medical treatment, which comprises a bearing frame, a bottom frame arranged below the bearing frame, first and second angle plates arranged between the bearing frame and the bottom frame and hinged to rotate, a lying plate arranged in a lying area of the bearing frame, a turnover plate arranged in a diagnosis and treatment area of the bearing frame, opening grooves arranged on both sides of the turnover plate, opening and closing mechanisms arranged in the opening grooves, stabilizing leg frames arranged on the moving ends of the opening and closing mechanisms, and a plurality of binding belts arranged on each stabilizing leg frame. The stabilizing leg frames and the binding belts are used for multi-point constraint to prevent slipping of lower limbs, the opening and closing mechanisms are used for adjusting the distance between lower limbs, the turnover plate is used for height and angle adjustment through shearing and lifting, the protective side plates and the flexible soft pads are used for improving safety and comfort, and the problems of easy slipping of limbs and difficult body position adjustment during operation are solved.

Description

Technical Field

[0001] This invention relates to the field of clinical medical technology, and specifically discloses a medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children. Background Technology

[0002] The semi-lithotomy position is a common surgical position in pediatric urology. By elevating and fixing the child's lower limbs, the perineum and perianal area are fully exposed, providing a clear surgical field and sufficient operating space for delicate surgical procedures such as circumcision, hypospadias correction, and incision and drainage of perianal abscesses. The lower limb support strap is a key device for maintaining the semi-lithotomy position; its reliability and structural rationality directly determine the stability of the position and the smoothness of the surgical procedure.

[0003] During surgery on infants and young children, due to their small size and inability to actively cooperate with positioning, the fixation straps must provide sufficient restraint without affecting lower limb blood circulation, while also preventing the operation from being interrupted due to insufficient exposure of the surgical area caused by changes in intraoperative positioning. Therefore, the anti-slip performance, uniform force distribution, and conformity to the shape of the child's lower limbs of the support straps are all important technical indicators affecting the quality of positioning management. Designing a lower limb support assistive device specifically for infants and young children that can effectively prevent slippage while taking into account comfort and safety is of significant clinical importance for improving the standardization and safety of positioning management in pediatric urological surgery.

[0004] Currently, most commonly used lower limb support and fixation devices for infants and young children are general-purpose straps or simplified versions of adult models, lacking structural designs specifically optimized for the anatomical and physiological characteristics of infants' and young children's lower limbs and the needs of surgical positioning. Because infants and young children have weak surgical awareness, they are prone to unconscious limb twisting during surgery due to pain or discomfort in their position. Existing fixation devices generally use a single-point binding method, resulting in a small contact area with the child's lower limbs. The force is concentrated in a narrow band-like area, which not only easily causes local skin indentations or even damage, but also easily slips and shifts longitudinally along the limb when the child struggles, requiring repeated adjustments to the position during surgery, seriously affecting surgical efficiency and medical quality.

[0005] Meanwhile, existing equipment also has the following significant shortcomings. First, it lacks an active adjustment function for the distance between the infant's lower limbs, and cannot adaptively adjust the opening angle of the legs according to the child's body shape and the needs of surgical field exposure. Second, the overall height adjustment of the equipment relies on manual padding or simple telescopic mechanisms, which is cumbersome and lacks precision, making it difficult to achieve stable lifting and lowering of the support frame. Third, it lacks necessary lateral protection structures, making the child's trunk prone to lateral tilting during surgery, increasing the risk of falls and unplanned positional changes. Fourth, the lying support surface of existing equipment is mostly a rigid plane, lacking an adaptation design to the natural curve of the infant's spine, which can easily cause discomfort and crying in children if the position is maintained for a long time. Therefore, there is an urgent need to develop a medical assistive device for supporting the lower limbs of infants and young children that has anti-slip function, adjustable distance between lower limbs, adjustable height, and provides both protection and comfortable support. Summary of the Invention

[0006] In view of the current problems in infant lower limb support and fixation devices, such as the lack of anti-slip structure and lower limb spacing adjustment function, which makes it easy for the child's limb to slip and shift during operation, the low standardization of body position management and many safety hazards, this invention provides an infant lower limb support and anti-slip medical auxiliary device.

[0007] To address the above problems, the present invention provides the following technical solution: A medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children includes a support frame, a base frame below the support frame, and a first and second corner plate hinged and rotatable between the support frame and the base frame. The first and second corner plates form a scissor-type lifting support structure for driving the height adjustment of the support frame relative to the base frame. The upper part of the support frame is divided into a lying area and a treatment area along its length. A lying board fixedly connected to the support frame is installed in the lying area for supporting the infant or young child while lying down. A flip-up panel is rotatably installed in the treatment area. The flip panel has symmetrically arranged opening slots on both sides. Each opening slot is equipped with an opening and closing mechanism. The fixed ends of the two opening and closing mechanisms are firmly connected to the inner walls of the opening slots. Each moving end of the two opening and closing mechanisms is fixedly equipped with a leg stabilizer. The opening and closing mechanism is used to drive the leg stabilizers on both sides to move closer or further apart to adjust the distance between the infant's lower limbs. Each leg stabilizer is equipped with multiple straps for fixing the infant's lower limbs. The straps are used to restrain the infant's lower limbs on the leg stabilizer to prevent the infant's lower limbs from slipping or shifting during treatment.

[0008] Preferably, the support frame includes two upper crossbeams arranged in parallel left and right, and the base frame includes two lower longitudinal beams arranged in parallel left and right; the first corner plate and the second corner plate are both triangular plate structures, the bottom end of the first corner plate is slidably hinged to the lower longitudinal beam of the base frame, the bottom end of the second corner plate is hinged to the side end of the first corner plate, and the top of the second corner plate is connected to the bottom of the upper crossbeam of the support frame; the height of the support frame can be adjusted by driving the first corner plate and the second corner plate to rotate relative to each other.

[0009] Preferably, two sets of the first and second corner plates are provided, located on the front and rear sides of the support frame respectively; the top ends of the two first corner plates on the same side of the support frame are hinged to a driving crossbar, and a stabilizing beam is fixedly connected between the two driving crossbars to form a linkage lifting frame; a supporting crossbar is fixedly installed between the two upper crossbars of the support frame, and the supporting crossbar is arranged perpendicularly to the driving crossbar; a lead screw is provided on the inner side of the support frame, the cylindrical end of the lead screw is hinged to the supporting crossbar, and the moving end of the lead screw is hinged to the stabilizing beam.

[0010] Preferably, a hand crank is rotatably mounted on the cylindrical end of the lead screw, with one inner end of the hand crank connected to the movable rod end of the hand crank, and a gripping sleeve mounted on the outer end of the hand crank; by rotating the gripping sleeve, the hand crank and the lead screw are rotated synchronously, changing the effective length of the lead screw, thereby pushing the stable beam to move and adjust the height.

[0011] Preferably, both sides of the support frame are hinged with protective side plates via swing arms. A first hydraulic damping rod is provided on the side of the swing arm, and the two ends of the first hydraulic damping rod are respectively hinged to the protective side plate and the support frame. The first hydraulic damping rod is configured to provide damping buffer force during the rotation of the protective side plate around the swing arm, and to provide axial support force when the protective side plate is rotated to a vertical state, so as to limit and keep the protective side plate in a vertical position.

[0012] Preferably, the bottom of the flap is hinged to the inner side of the support frame via a rotating rod, and a second hydraulic damping rod is provided on the back of the flap. One end of the second hydraulic damping rod is hinged to the back of the flap, and the other end of the second hydraulic damping rod is hinged to the rotating rod. When the flap rotates around the rotating rod, the length of the second hydraulic damping rod extends and retracts with the rotation angle of the flap, so as to drive the flap to rotate and limit its position.

[0013] Preferably, the opening and closing mechanism includes a fixed plate and a movable plate. The fixed plate is fastened to the inner wall of the opening slot, and the opening slot is hinged to one end on the same side as the fixed plate. A lead screw is rotatably mounted on the fixed plate, and a lead screw sleeve is fitted on the lead screw. A connecting rod is hinged between the lead screw sleeve and the movable plate, and the connecting rod is hinged to the middle of the movable plate. The movable plate is configured to slide axially under the drive of the lead screw to change the opening and closing angle of the movable plate relative to the fixed plate.

[0014] Preferably, a height limiting block is fixedly installed on the fixed plate, the height limiting block abuts against the side of the moving plate, and is used to limit the extreme position of the moving plate approaching the fixed plate, so as to limit the minimum opening and closing angle of the moving plate; a knob cover is fixedly fitted on the outer end of the lead screw, the outer peripheral surface of the knob cover is set as an anti-slip groove, and is used to drive the lead screw to rotate.

[0015] Preferably, the upper surfaces of the lying board and the flip board are covered with flexible pads; the lying board is provided with multiple flexible pads, and each independent flexible pad is connected by hinges to form a support surface that conforms to the curve of the infant's torso.

[0016] Preferably, both the reclining board and the flipping board are provided with gripping slots, which are configured to allow hands to be inserted to facilitate force application, flipping, and overall pushing of the reclining board and the flipping board; multiple traction rings are fixedly installed on the support frame, which are used for external ropes and straps to be threaded through to achieve traction; multiple casters are installed at the bottom of the base frame.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. Each leg stabilizer of the present invention is provided with multiple straps spaced apart along the length of the lower limb. The multi-point restraint of multiple straps effectively increases the contact area between the fixation device and the lower limb, so that the restraint force is evenly distributed over a larger strip area, avoiding the local skin indentation or even tissue damage caused by the force being concentrated in a narrow strip area in the traditional single-point binding method; at the same time, the multi-point distributed straps can effectively resist the unconscious limb twisting force caused by the child's pain stimulation or uncomfortable position, and prevent the lower limb from slipping and shifting longitudinally. Based on this, the opening and closing mechanism installed in the symmetrically arranged slots on both sides of the flap, through the precise cooperation of the fixed plate, the moving plate, the lead screw, the lead screw sleeve, and the connecting rod, realizes the active and precise adjustment of the distance between the two leg stabilizers. Rotating the knob cover drives the lead screw to rotate, the lead screw sleeve moves along the axis of the lead screw and drives the moving plate to swing through the connecting rod, thereby changing the opening and closing angle of the two leg stabilizers. This allows the device to adjust the infant's lower limbs to a suitable opening and closing angle that meets the surgical exposure requirements and conforms to the anatomical and physiological characteristics of the child, according to the size of the child and the requirements of different surgical types for the surgical field exposure. The height limit block ensures that the two leg stabilizers do not excessively clamp the infant's lower limbs when they are close to each other, avoiding compression injury or impaired blood circulation in the lower limbs due to an excessively small opening and closing angle. The above structural design enables the present invention to simultaneously possess the two core functions of anti-slip and active adjustment of the distance between the lower limbs, effectively overcoming the technical defects of existing equipment that lack targeted structural design, resulting in easy slippage and displacement of the child's limbs during surgery and low standardization of body position management.

[0018] 2. This invention combines a scissor-type lifting support structure with a flip-over mechanism, providing dual flexibility for infant lower limb support with adjustable height and angle, significantly improving the equipment's adaptability to different surgical scenarios. The scissor-type lifting support structure, consisting of a first and second corner plate, connects the support frame and the base frame, in conjunction with a screw drive system. The cylinder end of the screw is hinged to the support crossbar on the support frame, and the moving rod end is hinged to the stabilizing beam. Rotating the gripper sleeve drives the hand crank and screw to rotate synchronously, converting the screw's rotational motion into axial displacement of the moving rod end. This displacement of the stabilizing beam drives the two sets of first and second corner plates to rotate synchronously, achieving continuous and stable lifting of the support frame relative to the base frame. Compared to traditional manual heightening or simple telescopic mechanisms, this invention offers significant advantages such as continuous and stable adjustment, high positioning accuracy, labor-saving operation, and good synchronization on both sides. It can precisely adjust the equipment to the optimal working height according to the height differences of medical personnel and the requirements of the operating table. Meanwhile, a rotating flap within the treatment area is hinged to the inner side of the support frame via a rotating rod. A second hydraulic damping rod on the back of the flap extends and retracts with the changing angle as the flap rotates around the rod. This provides damping and buffering force for the rotation, ensuring smooth operation, and also provides support force through an internal gas spring structure to limit and hold the flap in place once it reaches the target angle. This ensures the flap remains stable even when bearing the weight of the infant's lower limbs and the additional forces of surgical procedures, preventing it from falling or changing angle on its own. This dual height and angle adjustable design allows medical staff to flexibly adjust the flap to any suitable angle according to the surgical exposure requirements and maintain a constant angle throughout the entire treatment process. It provides a clear surgical field and sufficient operating space for delicate surgical procedures such as circumcision, hypospadias correction, and perianal abscess incision and drainage, effectively solving the technical problems of cumbersome and inaccurate height adjustment and the inability to flexibly adjust and stably maintain the flap angle in existing equipment.

[0019] 3. The protective side plates on both sides of the support frame of this invention are hinged by swing arms, and together with the first hydraulic damping rod, they provide both damping and support limiting functions. During the flipping process of the protective side plates, the damping buffer force is provided to make the flipping speed uniform and slow, avoiding impact noise that may frighten the child. When the protective side plates are flipped to the vertical position, the internal gas spring structure provides axial support force to limit and maintain them in the vertical position, thus forming a stable and reliable lateral protective barrier. This effectively prevents the infant's trunk from tilting or shifting during surgery, significantly reducing the risk of falls and unplanned changes in body position. The flexible padding on the upper surface of the lying board adopts a multi-segment independent structure design. Each segment of the flexible padding is connected by hinges, allowing the segments to rotate relative to each other at a certain angle. This forms a support surface that conforms to the natural physiological curve of the infant's spine. When the infant is lying down, the cervical, thoracic, and lumbar curves are respectively supported by the flexible padding in the corresponding segments, avoiding the spinal discomfort caused by traditional rigid planar support surfaces, and effectively reducing the crying and struggling behavior of the child due to prolonged body position maintenance. Furthermore, the coordinated configuration of the first and second hydraulic damping rods ensures damping and buffering characteristics in both the flipping and raising of the protective side plate, resulting in a smooth and gentle positioning process that avoids startling infants and young children due to mechanical impact and noise. This structural design ensures stable surgical positioning while also considering the physiological comfort and operational safety of infants and young children, overcoming multiple shortcomings of existing equipment such as lack of lateral protection, support surfaces that do not conform to the physiological curves of infants' spines, and lack of cushioning protection during operation. Attached Figure Description

[0020] To more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall device structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the overall device structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the support frame and base frame installation structure of the present invention; Figure 4 This is a schematic diagram of the mounting structure of the first corner plate and the second corner plate of the present invention; Figure 5 This is a schematic diagram of the protective side plate mounting structure of the present invention; Figure 6 This is a schematic diagram of the first hydraulic damping rod mounting structure of the present invention; Figure 7This is a schematic diagram of the second hydraulic damping rod mounting structure of the present invention; Figure 8 This is a schematic diagram of the installation structure of the opening and closing mechanism of the present invention; In the diagram: 1. Support frame, 2. Base frame, 3. First corner plate, 4. Second corner plate, 5. Lying plate, 6. Flip plate, 7. Opening slot, 8. Opening and closing mechanism, 801. Fixed plate, 802. Moving plate, 803. Lead screw, 804. Lead screw nut sleeve, 805. Connecting rod, 806. Height limit block, 807. Knob cover, 9. Leg stabilizer, 10. Straps, 11. Drive crossbar, 12. Stabilizing beam, 13. Support crossbar, 14. Lead screw, 15. Hand crank, 16. Grip sleeve, 17. Swing arm, 18. Protective side plate, 19. First hydraulic damping rod, 20. Rotating rod, 21. Second hydraulic damping rod, 22. Flexible pad, 23. Grip slot, 24. Traction ring, 25. Universal wheel. Detailed Implementation

[0021] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0022] This specific embodiment provides a medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children, such as... Figures 1-8 As shown. This device is mainly used in pediatric urological surgery and treatment to provide stable support and reliable fixation for the lower limbs of infants and young children, maintain the semi-lithostomy position during surgery, fully expose the perineum and perianal area, and provide a clear surgical field and sufficient operating space for delicate surgical procedures such as circumcision, hypospadias correction, and incision and drainage of perianal abscesses.

[0023] like Figure 1 and Figure 2As shown, its overall structure mainly includes a support frame 1, a base frame 2, and a lifting support structure set between the support frame 1 and the base frame 2. The support frame 1 is a rectangular frame structure that extends longitudinally along the horizontal direction. The space above the support frame 1 is divided into two functional areas along its length: a lying area near the front of the equipment and a treatment area near the rear of the equipment. A lying board 5 is fixedly installed in the lying area. The lying board 5 is fastened to the support frame 1 by bolts and welding and is horizontally mounted above the support frame 1 to support the infant in a supine position. A flip-up plate 6 is rotatably installed in the treatment area. The flip-up plate 6 is also mounted above the support frame 1. Its end near the lying area is hinged to the inside of the support frame 1 by a rotating rod 20, so that the flip-up plate 6 can rotate upward relative to the support frame 1 at a certain angle around the axis of the rotating rod 20, thereby raising the infant's lower limbs to a suitable surgical operation height.

[0024] The support frame 1 includes two parallel upper crossbeams extending along its length, forming the main load-bearing components. The two upper crossbeams are fixedly connected by multiple transverse connecting beams, forming a stable rectangular frame structure. The base frame 2 is located directly below the support frame 1, its overall outline corresponding to the support frame 1, also forming a rectangular frame structure. The base frame 2 includes two parallel lower longitudinal beams. A caster wheel 25 is installed at each of the four corners of the base frame 2, each equipped with an independent brake locking device. When the equipment needs to be moved, releasing the brake device allows the equipment to be moved flexibly to the target position via the caster wheels 25; once the equipment reaches the designated working position, depressing the brake device locks all four caster wheels 25 simultaneously, securing the equipment firmly to the ground and preventing accidental movement during treatment, ensuring the safety of the surgical procedure.

[0025] like Figure 3 and Figure 4As shown, a first corner plate 3 and a second corner plate 4 are hinged and rotated between the support frame 1 and the base frame 2. The first corner plate 3 and the second corner plate 4 form a scissor-type lifting support structure, used to drive the support frame 1 to adjust its height relative to the base frame 2. Both the first corner plate 3 and the second corner plate 4 are triangular plate structures, with hinge holes at their three corners. The bottom end of the first corner plate 3 is slidably hinged to the lower longitudinal beam of the base frame 2, thereby achieving a rotational engagement. The bottom end of the second corner plate 4 is hinged to the side end of the first corner plate 3, and the top end of the second corner plate 4 is connected to the bottom of the upper crossbeam of the support frame 1. The first corner plate 3 and the second corner plate 4 form a scissor-type connection structure at the side hinge point. By driving the first corner plate 3 and the second corner plate 4 to rotate relative to each other, the included angle between them can be changed, thereby changing the overall height of the scissor structure, ultimately achieving height adjustment of the support frame 1 relative to the base frame 2. This scissor lift structure has the advantages of compact structure, smooth lifting, and strong load-bearing capacity. It can precisely adjust the support frame 1 to the optimal working height according to the height difference of medical staff and the height requirements of the operating table.

[0026] Two sets of first corner plates 3 and second corner plates 4 are provided, located on the front and rear sides of the support frame 1, respectively. A drive crossbar 11 is hinged to the top of the two first corner plates 3 on the same side of the support frame 1. A stabilizing beam 12 is fixedly connected between the two drive crossbars 11, thus connecting the two sets of scissor-type lifting structures into a single, interconnected lifting frame. A support crossbar 13 is fixedly installed between the two upper crossbars of the support frame 1. The support crossbar 13 is arranged perpendicularly to the drive crossbar 11, that is, it extends horizontally along the width of the support frame 1. A lead screw 14 is provided on the inner side of the support frame 1. The lead screw 14 is a trapezoidal threaded lead screw with self-locking characteristics, which can automatically maintain its position after adjustment without additional locking devices. The cylindrical end of the lead screw 14 is hinged to the support crossbar 13, and the moving end of the lead screw 14 is hinged to the stabilizing beam 12.

[0027] A hand crank 15 is rotatably mounted on the end of the cylinder of the lead screw 14. One inner end of the hand crank 15 is connected to the moving rod end of the lead screw 14, and a grip sleeve 16 is mounted on the outer end of the hand crank 15. The grip sleeve 16 is made of medical-grade rubber or plastic material, and its outer circumference is textured with anti-slip material for comfortable gripping by medical personnel. In actual height adjustment operations, medical personnel rotate the grip sleeve 16, causing the hand crank 15 and the lead screw 14 to rotate synchronously. The rotational motion of the lead screw 14 is converted into axial displacement of the moving rod end, thereby changing the effective length of the lead screw 14. The change in the effective length of the lead screw 14 causes the stabilizing beam 12 to shift in the front-to-back direction. The displacement of the stabilizing beam 12 is transmitted synchronously to the tops of the two sets of first corner plates 3 via two drive crossbars 11, driving the two sets of first corner plates 3 and second corner plates 4 to rotate synchronously relative to each other, thus achieving synchronous lifting of the entire lifting frame. Compared to traditional manual height adjustment or simple telescopic mechanisms, this height adjustment method has significant advantages such as continuous and stable adjustment process, high positioning accuracy, labor-saving operation, and good synchronization between the left and right sides, effectively solving the technical defects of existing equipment in terms of cumbersome height adjustment and insufficient accuracy.

[0028] A reclining board 5 is fixedly installed in the lying area above the support frame 1. The reclining board 5 is a rigid support plate with a certain thickness. The reclining board 5 is fixedly connected to the upper crossbeam of the support frame 1 by bolt fasteners. After installation, it remains in a horizontal state, providing a stable and reliable lying support base for infants and young children.

[0029] The upper surface of the reclining board 5 is covered with a flexible pad 22, which is made of medical-grade memory foam material. This material has excellent elasticity and shape recovery capabilities, effectively absorbing pressure generated when the infant lies down, dispersing pressure on the body surface, and preventing excessive local pressure that could cause skin indentations or tissue damage. The outer layer of the flexible pad 22 is covered with a waterproof and breathable fabric, facilitating cleaning and disinfection after daily use and preventing cross-infection. Furthermore, the flexible pad 22 on the reclining board 5 is designed as a multi-segment independent structure. That is, the flexible pad 22 is divided into multiple segments along the length of the reclining board 5, and each independent segment is connected by a hinge, allowing the segments to rotate relative to each other at a certain angle, thus forming a support surface that conforms to the natural physiological curve of the infant's spine. When infants lie down, their cervical, thoracic, and lumbar curves are supported by the corresponding flexible pads 22, avoiding the discomfort of the spine caused by traditional rigid planar support surfaces. This effectively reduces the crying and struggling behavior of children due to prolonged positional maintenance, providing a good foundation for the smooth progress of the surgery.

[0030] Side protection structures are provided on both sides of the support frame 1, as detailed below. Figure 5 and Figure 6As shown. Each side of the support frame 1 is hinged with a protective side plate 18 via a swing arm 17. The protective side plate 18 is a rectangular plate structure, preferably 20 to 35 cm high, which can effectively prevent the infant's torso from shifting to the side. The bottom of the protective side plate 18 is hinged to the outside of the upper crossbeam of the support frame 1 via two swing arms 17. The two ends of the swing arms 17 are respectively hinged to the support frame 1 and the protective side plate 18, so that the protective side plate 18 can rotate relative to the support frame 1 in the vertical plane around the hinge point of the swing arms 17. When the protective side plate 18 is flipped downward, the protective side plate 18 is placed on the side of the support frame 1, making it easy for the infant to lie in or move out; when the protective side plate 18 is flipped upward, the protective side plate 18 stands upright on both sides of the upper part of the support frame 1, forming an effective lateral protective barrier.

[0031] A first hydraulic damping rod 19 is provided on the side of the swing arm 17. The two ends of the first hydraulic damping rod 19 are hinged to the protective side plate 18 and the support frame 1, respectively. The first hydraulic damping rod 19 is a gas-liquid hybrid damping element that integrates damping, buffering, and support limiting. It is filled with hydraulic oil and nitrogen, and generates damping force through the reciprocating motion of the piston rod within the cylinder. The first hydraulic damping rod 19 is configured to provide damping buffering force during the rotation of the protective side plate 18 around the swing arm 17. Specifically, when medical personnel rotate the protective side plate 18 upwards or downwards, the piston rod of the first hydraulic damping rod 19 extends or retracts accordingly. The damping force keeps the rotation speed of the protective side plate 18 uniform and gradual, avoiding impact and noise caused by rapid rotation, and also preventing the protective side plate 18 from falling freely under gravity and causing fright or injury to infants. When the protective side plate 18 is rotated to a vertical position, the gas spring structure inside the first hydraulic damping rod 19 provides axial support force to limit and maintain the protective side plate 18 in a vertical position. When the protective side panel 18 is in a vertical position, the piston rod of the first hydraulic damping rod 19 is in a specific extended position. The direction of the gas spring's thrust is exactly opposite to the direction of the gravitational torque of the protective side panel 18, thus forming a balanced lock and keeping the protective side panel 18 stably in a vertical position without the need for an additional mechanical locking device. When it is necessary to flip the protective side panel 18 downwards, medical staff only need to apply an external force greater than the gas spring's thrust to overcome the damping force and slowly lower the protective side panel 18. This lateral protection structure effectively solves the problem of the lack of necessary lateral protection in existing equipment, significantly reducing the risk of lateral tilting and falls during surgery.

[0032] A flap 6 is rotatably installed in the treatment area above the support frame 1. The flap 6 is a rigid support plate, and its width is adapted to the internal width of the support frame 1. The bottom of the flap 6 is hinged to the inside of the support frame 1 through a rotating rod 20. The rotating rod 20 is horizontally set along the width direction of the support frame 1 at one end of the flap 6 near the lying area. The two ends of the rotating rod 20 are rotatably connected to the inner side of the upper crossbeams on both sides of the support frame 1. The bottom end of the flap 6 is fixedly connected to the rotating rod 20 or fastened to the rotating rod 20 through a connecting ear plate, so that the flap 6 as a whole can flip upward in the vertical plane around the axis of the rotating rod 20.

[0033] like Figure 7 As shown, a second hydraulic damping rod 21 is provided on the back of the flip plate 6. The structure of the second hydraulic damping rod 21 is similar to that of the first hydraulic damping rod 19, and it is also a gas-liquid hybrid damping element that integrates damping, buffering, and support limiting. One end of the second hydraulic damping rod 21 is hinged to the back of the flip plate 6 near the free end, and the other end of the second hydraulic damping rod 21 is hinged to the rotating rod 20. When the flip plate 6 flips around the rotating rod 20, the length of the second hydraulic damping rod 21 extends and retracts with the flip angle of the flip plate 6. That is, when the flip plate 6 flips upward, the piston rod of the second hydraulic damping rod 21 extends, and the damping force makes the flipping action smooth; when the flip plate 6 returns to its original position downward, the piston rod retracts, which also provides damping buffering. When the flip plate 6 flips to the target angle, the gas spring structure inside the second hydraulic damping rod 21 provides support force, limiting and holding the flip plate 6 at that angle position, so that the flip plate 6 can remain stable when bearing the weight of the infant's lower limb and the additional force of the surgical operation, and will not fall or change angle on its own. This structural design allows medical staff to flexibly adjust the flap 6 to any suitable angle according to the surgical exposure requirements, and maintain a constant angle throughout the entire treatment process, providing stable positional support for delicate surgical operations.

[0034] The upper surface of the flap 6 is also covered with a flexible pad 22, providing a soft and comfortable support interface for the infant's lower limbs. Symmetrically arranged opening slots 7 are provided on both sides of the flap 6. Both opening slots 7 are rectangular grooves recessed inward from the side of the flap 6, and their width and depth are sufficient to accommodate the subsequently installed opening and closing mechanism 8 and leg stabilizer 9. An opening and closing mechanism 8 is installed in each of the two opening slots 7, with the fixed ends of both mechanisms firmly connected to the inner wall of the slot 7. A leg stabilizer 9 is fixedly installed on the moving ends of both mechanisms. The leg stabilizer 9 is a long, arc-shaped support structure adapted to the shape of the infant's lower limbs, and its inner wall is also covered with a flexible pad to support the infant's thighs or calves. The opening and closing mechanism 8 drives the leg stabilizers 9 on both sides to move closer or further apart, adjusting the distance between the infant's lower limbs to accommodate the opening and closing angle requirements of children of different body types and the requirements of different surgical field exposure ranges.

[0035] Each leg stabilizer 9 is equipped with multiple straps 10 for securing the infant's lower limbs. The straps 10 are spaced apart along the length of the leg stabilizer 9, preferably four straps 10 per leg stabilizer 9. The straps 10 are made of medical-grade fabric with a soft padding inner layer and a Velcro or snap-locking structure on the outer layer. One end of the strap 10 is fixedly connected to one side edge of the leg stabilizer 9, while the other end is free and can be wrapped around the infant's lower limb and locked to the other side edge of the leg stabilizer 9 or to a corresponding part of the strap 10 itself. The straps 10 are used to firmly restrain the infant's lower limbs to the leg stabilizer 9. The multiple straps 10 distributed at multiple points along the length of the lower limb effectively increase the contact area between the fixation device and the lower limb, so that the restraining force is evenly distributed over a larger strip area, avoiding the problem of local skin indentation or even tissue damage caused by the force concentrated in a narrow strip area in traditional single-point binding methods. Meanwhile, the multi-point distributed straps 10 can effectively resist the unconscious limb twisting force caused by the child's pain stimulation or uncomfortable position, prevent the lower limb from slipping and shifting longitudinally, and ensure that the lower limb position remains stable throughout the entire treatment process.

[0036] like Figure 8 As shown, the opening and closing mechanism 8 includes a fixed plate 801 and a movable plate 802. The fixed plate 801 is a rectangular metal plate, which is fixedly connected to the inner wall of the opening slot 7 by bolts and fasteners. That is, the fixed plate 801 is fixedly installed inside the opening slot 7 of the flip plate 6 and does not move with the adjustment action. One end of the opening slot 7 on the same side as the fixed plate 801 is hinged, that is, the end of the opening slot 7 near the side of the flip plate 6 serves as the hinge mounting point, providing a hinge base for the swing of the movable plate 802.

[0037] A lead screw 803 is rotatably mounted on a fixed plate 801, with its inner end near the center of the flap 6 and its outer end near the side of the flap 6. The lead screw 803 is rotatably mounted on the fixed plate 801 via a bearing seat and can rotate freely around its own axis. A lead screw nut 804 is fitted onto the lead screw 803, and the internal thread of the lead screw nut 804 engages with the external thread of the lead screw 803. When the lead screw 803 rotates, the lead screw nut 804 moves axially along the lead screw 803. A connecting rod 805 is hinged between the lead screw nut 804 and the moving plate 802, with one end of the connecting rod 805 hinged to the lead screw nut 804 and the other end hinged to the middle of the moving plate 802. The movable plate 802 is a rectangular metal plate, the bottom end of which is hinged to the hinge mounting point on the side end of the opening slot 7, so that the movable plate 802 can swing around the hinge point in a horizontal plane or in a plane at a certain angle to the horizontal plane. The movable plate 802 is configured to slide axially and swing synchronously under the drive of the lead screw 803, so as to change the opening and closing angle of the movable plate 802 relative to the fixed plate 801.

[0038] When medical staff rotate the lead screw 803, the lead screw sleeve 804 moves inward or outward along the lead screw 803. If the lead screw sleeve 804 moves inward, the connecting rod 805 swings inward, pushing the moving plate 802 to swing outward around its hinge point, increasing the angle between the moving plate 802 and the fixed plate 801, i.e., increasing the opening angle. If the lead screw sleeve 804 moves outward, the connecting rod 805 swings outward, pulling the moving plate 802 to swing inward around its hinge point, decreasing the angle between the moving plate 802 and the fixed plate 801, i.e., decreasing the opening angle. Since the leg stabilizer 9 is fixedly installed on the moving plate 802, the distance between the two leg stabilizers 9 changes synchronously with the opening angle of the moving plate 802; when the opening angle increases, the two leg stabilizers 9 move away from each other, and when the opening angle decreases, the two leg stabilizers 9 move closer to each other, thereby achieving active and precise adjustment of the distance between the infant's lower limbs.

[0039] A height limiting block 806 is fixedly installed on the fixed plate 801. The height limiting block 806 is a block-shaped structure protruding from the surface of the fixed plate 801, and its position is set on the movement path of the moving plate 802 when it moves towards the fixed plate 801. The height limiting block 806 abuts against the side of the moving plate 802 to limit the extreme position of the moving plate 802 when it moves towards the fixed plate 801, thereby limiting the minimum opening and closing angle of the moving plate 802. This limiting structure can ensure that the two leg stabilizers 9 do not excessively clamp the infant's lower limbs when they come close to each other, avoiding crush injuries to the child's lower limbs or affecting blood circulation in the lower limbs due to an excessively small opening and closing angle, thus improving the safety of the equipment.

[0040] A knob cover 807 is fixedly fitted to the outer end of the lead screw 803. The knob cover 807 is a circular or polygonal cover with anti-slip grooves or knurled patterns on its outer circumference to facilitate gripping and rotation by medical staff. The knob cover 807 is directly fixed to the outer end of the lead screw 803. Rotating the knob cover 807 drives the lead screw 803 to rotate synchronously. The operation is intuitive and simple, requiring no additional tools.

[0041] The design of the opening and closing mechanism 8 makes the adjustment of the lower limb spacing extremely convenient and precise. In actual clinical applications, there are significant differences in the natural opening and closing angles of the lower limbs among infants and young children of different ages and body types. Furthermore, different surgical procedures, such as circumcision and hypospadias correction, have varying requirements for the surgical field exposure. The opening and closing mechanism 8 allows for easy adjustment of the two leg stabilizers 9 to the optimal spacing using a simple knob operation, ensuring both sufficient exposure of the surgical field and a natural and comfortable lower limb position for the child. This effectively overcomes the technical deficiency of existing equipment that lacks active lower limb spacing adjustment functionality.

[0042] The infant lower limb support and anti-slip medical assistive device provided in this embodiment is used in actual clinical practice according to the following operating steps: The first step is equipment preparation and initial height adjustment. Before use, first check whether all parts of the equipment are intact, whether the brakes on the casters 25 are working properly, and whether the flexible pads 22 are clean and undamaged. After moving the equipment to the predetermined working position next to the operating table or treatment bed, step on the brakes on the four casters 25 to securely lock the equipment to the ground. Then, according to the surgeon's height and surgical habits, rotate the gripper sleeve 16 to rotate the hand crank 15. The lead screw 14 rotates accordingly and changes its effective length, driving the scissor-type lifting support structure to smoothly raise and lower, adjusting the support frame 1 to the optimal working height, so that the height of the treatment area flip panel 6 matches the height of the operating table, facilitating the transfer and operation of instruments during surgery.

[0043] The second step involves establishing the infant's lying position and lateral protection. The infant is gently lifted from the transport bed or incubator and placed supine on the reclining board 5 in the supine area, with the head facing the end of the reclining area furthest from the treatment area, the torso naturally extended on the board 5, and both lower limbs naturally extended towards the treatment area. The multiple flexible pads 22 on the reclining board 5 automatically adapt to the natural physiological curve of the infant's spine, providing comfortable support that conforms to the torso's curve. Once the infant is lying stably, the protective side panels 18 located on both sides of the support frame 1 are flipped upwards to a vertical position. During the flipping process, the first hydraulic damping rod 19 provides damping and buffering force, making the flipping action smooth and gentle, avoiding impact noise that might startle the child. When the protective side panels 18 reach the vertical position, the first hydraulic damping rod 19 automatically locks the protective side panels 18 in that position, forming a stable lateral protection barrier, effectively preventing lateral tilting or displacement of the infant's torso during the procedure.

[0044] The third step is adjusting the lower limb placement and opening / closing distance. Gently place the infant's lower limbs on the leg stabilizers 9 on both sides of the flip-up plate 6, ensuring the thighs or calves are in contact with the curved supports of the leg stabilizers 9, with the infant's ankles or feet naturally extending beyond the outer ends of the leg stabilizers 9. Depending on the infant's size and the required surgical field exposure based on the type of surgery, the opening / closing mechanism 8 is activated by rotating the knob covers 807 on both sides of the flip-up plate 6. Rotating the knob covers 807 causes the lead screw 803 to move the lead nut 804 axially. The lead nut 804, through the connecting rod 805, drives the moving plate 802 to swing, thereby changing the distance between the two leg stabilizers 9. If a larger lower limb opening / closing angle is needed for more complete perineal exposure, rotate the knob cover 807 in the direction of increasing the opening / closing angle, moving the two leg stabilizers 9 further apart. If a smaller lower limb opening / closing angle is needed to accommodate smaller children, rotate the knob cover 807 in the opposite direction, moving the two leg stabilizers 9 closer together. The height limiting block 806 constantly restricts the minimum opening angle of the movable plate 802 during adjustment, ensuring that the two leg stabilizers 9 do not come too close together and cause a risk of pinching. Through this adjustment, the infant's lower limbs are positioned at an appropriate opening angle that meets both the surgical exposure requirements and the anatomical and physiological characteristics of the child.

[0045] Step 4: Lower limb fixation and anti-slip restraint. After adjusting the lower limb spacing, use multiple straps 10 on each leg stabilizer 9 to fix and restrain the infant's lower limbs. Specifically, wrap the free end of the strap 10 around the top or front of the infant's lower limb, pull it to the other edge of the leg stabilizer 9, and secure it using Velcro and snap fasteners. The multiple straps 10 should be evenly distributed along the length of the lower limb and secured sequentially to distribute the restraint force evenly along the longitudinal direction of the lower limb. The tightness of the straps 10 should be sufficient to effectively restrict lower limb movement without affecting distal blood circulation. After fixation, check the color, temperature, and capillary refill time of the toes to ensure normal blood circulation. The multi-point restraint method of the multiple straps 10 effectively increases the contact area between the fixation device and the lower limb, avoiding stress concentration, and resisting limb twisting caused by pain or discomfort. It physically prevents the lower limb from slipping and shifting longitudinally, providing a stable position for subsequent diagnostic and treatment procedures.

[0046] Step 5: Flip-up and Positioning. After lower limb fixation, the flip-up plate 6 is flipped upwards to the desired angle by applying force through the gripping groove 23. As the flip-up plate 6 rotates upwards around the rotating rod 20, the piston rod of the second hydraulic damping rod 21 extends, providing damping and buffering force to ensure a smooth flipping motion. When the flip-up plate 6 reaches the target angle, the gas spring structure inside the second hydraulic damping rod 21 generates supporting force to limit and hold the flip-up plate 6 at that angle. At this time, the infant's lower limbs are raised and fixed in a semi-lithotomy position along with the flip-up plate 6, fully exposing the perineum and perianal area, providing a clear surgical field and sufficient operating space for delicate surgical procedures such as circumcision, hypospadias correction, and incision and drainage of perianal abscesses.

[0047] Step 6: Diagnosis and Treatment Procedures and Post-operative Care. During the surgery or treatment procedure performed by the surgeon, the scissor-type lifting support structure of the support frame 1 maintains a stable height position. The flip plate 6 maintains a constant flip angle under the support of the second hydraulic damping rod 21. The two protective side plates 18 remain in a vertical protective state under the locking of the first hydraulic damping rod 19. The leg stabilizer 9 and the straps 10 firmly restrain the infant's lower limbs in a stable position. The coordinated action of these structures ensures the consistency and stability of the infant's position throughout the entire treatment process, avoiding interruptions or repeated adjustments due to changes in position. After the treatment procedure is completed, the operation is performed in reverse order: first, by applying force through the through slot 23, the flip plate 6 is flipped downwards to return to a horizontal position; second, the locking of each strap 10 is released to release the infant's lower limbs from the leg stabilizer 9; then, the two protective side plates 18 are flipped downwards to open; finally, the infant is smoothly removed from the reclining board 5. After cleaning and disinfecting the equipment, it is returned to its original storage for future use.

[0048] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children, comprising a support frame (1), characterized in that, A base frame (2) is provided below the support frame (1). A first corner plate (3) and a second corner plate (4) are hinged and rotated between the support frame (1) and the base frame (2). The first corner plate (3) and the second corner plate (4) form a scissor-type lifting support structure, which is used to drive the support frame (1) to adjust its height relative to the base frame (2). The upper part of the support frame (1) is divided into a lying area and a treatment area along its length. A lying board (5) is fixedly installed in the lying area and is fastened to the support frame (1) for supporting infants to lie flat. A flip-up plate (6) is rotatably installed in the treatment area. The flip-up plate (6) is provided on both sides. There are symmetrically arranged opening slots (7), and each of the two opening slots (7) is equipped with an opening and closing mechanism (8). The fixed ends of the two opening and closing mechanisms (8) are tightly connected to the inner wall of the opening slots (7). Each of the two opening and closing mechanisms (8) is fixedly installed with a leg stabilizer (9). The opening and closing mechanism (8) is used to drive the leg stabilizers (9) on both sides to move closer or further apart to adjust the distance between the infant's lower limbs. Each leg stabilizer (9) is provided with multiple straps (10) for fixing the infant's lower limbs. The straps (10) are used to restrain the infant's lower limbs on the leg stabilizer (9) to prevent the infant's lower limbs from slipping and shifting during the diagnosis and treatment process.

2. The medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, The support frame (1) includes two upper crossbeams arranged in parallel on the left and right, and the base frame (2) includes two lower longitudinal beams arranged in parallel on the left and right. The first corner plate (3) and the second corner plate (4) are both triangular plate structures. The bottom end of the first corner plate (3) is slidably hinged to the lower longitudinal beam of the base frame (2), and the bottom end of the second corner plate (4) is hinged to the side end of the first corner plate (3). The top of the second corner plate (4) is connected to the bottom of the upper crossbeam of the support frame (1). The height of the support frame (1) can be adjusted by driving the first corner plate (3) and the second corner plate (4) to rotate relative to each other.

3. The infant lower limb support and anti-slip medical assistive device according to claim 2, characterized in that, Two sets of the first corner plate (3) and the second corner plate (4) are provided, and are located on the front and rear sides of the support frame (1) respectively. The top of the two first corner plates (3) located on the same side of the support frame (1) are hinged together with a drive crossbar (11). A stabilizing beam (12) is fixedly connected between the two drive crossbars (11) to form a linkage lifting frame. A support crossbar (13) is fixedly installed between the two upper crossbars of the support frame (1). The support crossbar (13) is arranged perpendicularly to the drive crossbar (11). A screw (14) is provided on the inner side of the support frame (1). The cylindrical end of the screw (14) is hinged to the support crossbar (13), and the moving rod end of the screw (14) is hinged to the stabilizing beam (12).

4. The infant lower limb support and anti-slip medical assistive device according to claim 3, characterized in that, A hand crank (15) is rotatably mounted on the end of the cylinder of the lead screw (14). The inner end of the hand crank (15) is connected to the moving rod end of the hand crank (15), and a gripping sleeve (16) is mounted on the outer end of the hand crank (15). By rotating the gripping sleeve (16), the hand crank (15) and the lead screw (14) are driven to rotate synchronously, changing the effective length of the lead screw (14), thereby pushing the stable beam (12) to move to adjust the height.

5. The medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, Both sides of the support frame (1) are hinged with protective side plates (18) via swing arms (17). A first hydraulic damping rod (19) is provided on the side of the swing arm (17). The two ends of the first hydraulic damping rod (19) are respectively hinged to the protective side plate (18) and the support frame (1). The first hydraulic damping rod (19) is configured to provide damping buffer force during the process of the protective side plate (18) rotating around the swing arm (17) and to provide axial support force when the protective side plate (18) is rotated to a vertical state, so as to limit and keep the protective side plate (18) in a vertical position.

6. The medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, The bottom of the flap (6) is hinged to the inner side of the support frame (1) via a rotating rod (20). A second hydraulic damping rod (21) is provided on the back of the flap (6). One end of the second hydraulic damping rod (21) is hinged to the back of the flap (6), and the other end of the second hydraulic damping rod (21) is hinged to the rotating rod (20). When the flap (6) flips around the rotating rod (20), the length of the second hydraulic damping rod (21) extends and retracts with the flip angle of the flap (6) to drive the flap (6) to rotate and limit its position.

7. The medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, The opening and closing mechanism (8) includes a fixed plate (801) and a movable plate (802). The fixed plate (801) is fastened to the inner wall of the opening groove (7). The opening groove (7) is hinged to one end of the fixed plate (801) on the same side. A lead screw (803) is rotatably mounted on the fixed plate (801). A lead screw sleeve (804) is fitted on the lead screw (803). A connecting rod (805) is hinged between the lead screw sleeve (804) and the movable plate (802). The connecting rod (805) is hinged to the middle of the movable plate (802). The movable plate (802) is configured to slide axially under the drive of the lead screw (803) to change the opening and closing angle of the movable plate (802) relative to the fixed plate (801).

8. The infant lower limb support and anti-slip medical assistive device according to claim 7, characterized in that, A height limiting block (806) is fixedly installed on the fixed plate (801). The height limiting block (806) abuts against the side of the moving plate (802) to limit the extreme position of the moving plate (802) approaching the fixed plate (801) and limit the minimum opening and closing angle of the moving plate (802). A knob cover (807) is fixedly fitted on the outer end of the lead screw (803). The outer circumferential surface of the knob cover (807) is set with an anti-slip groove and is used to drive the lead screw (803) to rotate.

9. The medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, The upper surfaces of the lying board (5) and the flip board (6) are covered with flexible pads (22); the lying board (5) is provided with multiple flexible pads (22), and each independent flexible pad (22) is connected by hinges to form a support surface that adapts to the curve of the infant's torso.

10. A medical assistive device for supporting and preventing slippage of the lower limbs of infants and young children according to claim 1, characterized in that, Both the reclining board (5) and the flip board (6) are provided with gripping slots (23), which are configured to allow the hand to be inserted so as to apply force to flip the reclining board (5) and the flip board (6) and push them as a whole; multiple traction rings (24) are fixedly installed on the support frame (1), which are used for external ropes and straps to be threaded through to achieve traction; multiple casters (25) are installed at the bottom of the base frame (2).

Images