Child lumbar puncture fixing and restraining device and fixing and restraining method

Abstract

The invention discloses a child lumbar puncture fixing and restraining device and a fixing and restraining method, belongs to the field of surgical operation related instruments, is used for solving the problems that during child lumbar puncture, body position fixing is difficult, and fear resistance is likely to be generated, and is suitable for child lumbar puncture diagnosis and treatment scenes. The device comprises a base, a seat barrel, a backrest plate, an air pump, an air bag cushion, a shaking mechanism, a locking mechanism and an exhaust assembly. A holding rod is arranged on the inner wall of the seat barrel; the shaking mechanism comprises a first permanent magnet, a second permanent magnet, a second spring and a lifting column, the locking mechanism comprises an air bag pipe, a clamping pin column and a fixing cylinder, and the exhaust assembly comprises a pressing column, an air blocking plate and an exhaust box. During use, a child is guided to curl to sit, the air pump is started to inflate the airbag cushion to restrain the body position, and meanwhile the shaking mechanism is triggered to drive the seat barrel to shake up and down; after the movable plate covers the air delivery pipe connector, the air drives the locking mechanism to lock the seat barrel, the device has the fixing safety and the child pacifying effect, and operation is convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of surgical instruments, and more specifically, to a pediatric lumbar puncture fixation and restraint device and method. Background Technology

[0002] Lumbar puncture in children is a core medical procedure in pediatric clinical diagnosis of central nervous system diseases such as meningitis and encephalitis, as well as for monitoring intracranial pressure and obtaining cerebrospinal fluid samples. The success rate and safety of this procedure depend not only on the technical skill of the medical staff, but also on the accuracy and stability of the child's position during the puncture. This procedure has strict and specific requirements for the position: to ensure that the puncture needle can pass smoothly through the lumbar intervertebral space into the subarachnoid space, the child needs to maintain a hunched or curled-up posture to the maximum extent. Through the backward bending of the spine, the gap between the two adjacent lumbar vertebrae is significantly widened, forming a larger and clearer puncture target area. This greatly reduces the difficulty of puncture needle positioning, improves the puncture success rate, and reduces the risk of complications such as tissue damage and bleeding caused by puncture deviation.

[0003] Currently, the lumbar puncture fixation and restraint devices widely used in clinical practice for children are all designed around forced postural fixation. Typical structures include an arc-shaped support base that adapts to the child's body curves, multiple sets of elastic trunk restraint straps, adjustable limb limiters, and quick-fastening buckles. During the procedure, medical staff first place the child prone or on their side on the support base, guiding them into an initial hunched or curled-up position. Then, the restraint straps are wrapped around the child's chest, waist, and groin. The limb limiters are used to laterally secure the child's upper and lower limbs. Finally, the restraint straps are tightened one by one using the fastening buckles, forming a direct binding restraint on the child's body to restrict limb movement. While these devices can prevent significant displacement of the child to some extent and meet basic postural fixation needs, they have certain limitations in practical application.

[0004] Existing devices completely ignore the physiological and psychological characteristics of children and lack any targeted emotional soothing mechanisms. Children have limited cognitive abilities, especially infants under 3 years old and younger children, who have a natural fear of medical procedures and unfamiliar environments. Direct binding and restraint can bring children a strong sense of confinement and oppression, which can easily trigger their stress response, manifested as violent crying, limb stiffness, and resistant twisting. This stress response can further disrupt the already adjusted hunched and curled-up posture, causing changes in the position of the lumbar intervertebral space, increasing the difficulty for medical staff to relocate the puncture point and prolonging the operation time. On the other hand, the child's struggle may cause the restraint straps to loosen or the buckles to slip, rendering the postural restraint ineffective. This not only increases the risk of needle displacement and tissue damage, but also requires medical staff to devote more energy to controlling the child's limbs, significantly increasing the intensity of the diagnosis and treatment work. Furthermore, the existing devices do not have any soothing structures that conform to children's behavioral habits, and cannot reduce the degree of children's fright through emotional intervention. This violates the concept of humanistic care in pediatric diagnosis and treatment, and may even leave psychological shadows on children due to continuous fear experience, reducing their cooperation with subsequent medical procedures. Summary of the Invention

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a lumbar puncture fixation and restraint device and method for children, which can achieve the dual effects of fixing and restraining the child's body position and comforting the child.

[0006] To solve the above problems, the present invention adopts the following technical solution.

[0007] In a first aspect, a pediatric lumbar puncture fixation and restraint device includes a base, a seat bucket above the base, a backrest fixedly installed on one side of the seat bucket, a puncture hole for performing lumbar puncture on the backrest, and airbags on the inner walls of the front and rear ends of the seat bucket, respectively. The airbags are connected to an air supply device for inflating them. When the airbags are inflated, they gradually expand to restrain the position of the child sitting in the seat bucket from both sides.

[0008] A rocking component capable of driving the seat to reciprocate up and down is provided between the base and the seat. A locking component is also provided inside the rocking component. When the airbag is inflated to a preset constraint state, the locking component automatically locks the rocking component, fixing the seat relative to the base.

[0009] Furthermore, the rocking assembly includes a cavity 1 formed at the bottom of the seat tub and an elastic support mechanism disposed between the base and the seat tub; the cavity 1 is disposed on the air supply passage between the air supply component and the airbag cushion, and an air pipe is installed inside it; one end of the air pipe has an opening, and a piston plate that can slide along its inner wall is disposed inside it; a movable column is fixedly connected to the side of the piston plate away from the opening; the other end of the movable column movably passes through the end of the air pipe and is fixedly connected to the movable plate; a permanent magnet 1 is mounted on the movable column; a spring 1 is sleeved on the movable column between the piston plate and the inner wall of the air pipe; and multiple sets of spaced permanent magnet 2 are disposed on the upper surface of the base along the moving path of the permanent magnet 1.

[0010] The interior of cavity one is connected to the interior of the airbag cushion via a connecting pipe.

[0011] Furthermore, the elastic support mechanism includes multiple sets of lifting columns and fixed cylinders. The upper end of the lifting column is fixedly connected to the bottom of the seat bucket, the lower part of the lifting column is sleeved inside the fixed cylinder, the lower end of the fixed cylinder is fixedly connected to the base, and a second spring is provided inside the fixed cylinder. The upper end of the second spring is connected to the lifting column, and its lower end is connected to the inner bottom wall of the fixed cylinder.

[0012] Furthermore, the locking assembly includes a triggering mechanism and a locking execution mechanism; the triggering mechanism includes a cavity two opened at the bottom of the toilet seat, and an air duct opened on the inner wall of cavity one and communicating with cavity two; a fixing block is fixedly installed in cavity one, a spring three is fixedly connected to one side of the fixing block, and a sealing plate for sealing the air duct is fixedly connected to the end of spring three away from the fixing block.

[0013] When the movable plate moves to the end of its stroke, it pushes the sealing plate to move against the elastic force of the spring three, thus opening the air guide hole.

[0014] Furthermore, the locking actuator includes an air guide tube, an airbag tube, and a locking pin;

[0015] One end of the air guide tube is connected to the cavity 2, and the other end is connected to the airbag tube; there are two sets of locking pins, which are respectively connected to both sides of the airbag tube; the side wall of the lifting column is provided with a movable hole, and the side wall of the fixed cylinder is provided with a corresponding fixed hole; the locking pin is housed inside the lifting column and corresponds to the movable hole.

[0016] The locking actuator is configured such that when the air vent is opened, gas is filled into the airbag tube through the second cavity and the air vent pipe, causing it to expand and drive the locking pin to pass through the movable hole and the fixed hole in sequence, thereby locking the lifting pin relative to the fixed cylinder.

[0017] Furthermore, the air supply component is an air pump, which is installed below the base. The exhaust end of the air pump is connected to an air supply pipe, which is made of a soft material. The end of the air supply pipe away from the air pump is connected to a cavity.

[0018] Furthermore, when the movable plate moves to the end of its stroke, it can cover the interface connecting the gas pipe and the cavity, thus blocking the gas passage.

[0019] Furthermore, an exhaust box is installed at one end of the base, and an exhaust hole is opened on the side wall of the exhaust box. An air-blocking plate that can move up and down is set inside the exhaust box. A spring is fixedly connected between the lower end of the air-blocking plate and the bottom wall of the exhaust box. In its natural state, the air-blocking plate seals and covers the exhaust hole by the spring. An air vent is opened on the air-blocking plate, and a pressing column is fixedly connected to the upper end of the air-blocking plate. The upper end of the pressing column moves through the top wall of the exhaust box and extends to the outside. The exhaust box is connected to the cavity through a connecting pipe.

[0020] Furthermore, a bracket is fixedly installed at the upper end of the seat, and a handle is fixedly connected to the inner wall of the seat.

[0021] Secondly, the present invention also provides a fixation and restraint method applicable to the above-mentioned lumbar puncture fixation and restraint device for children, comprising the following steps:

[0022] Step 1: Place the phone or iPad on the stand, guide the child to enter the seat in a curled-up position, instruct the child to hold the handles on the inner wall of the seat with both hands, help the child to press their back against the backrest, adjust the child's body position, and keep the child's spine and backrest at the preset relative angle.

[0023] Step 2: Start the air pump. The air pump delivers gas to cavity one through the air supply pipe. The gas flows through cavity one and the connecting pipe to the airbags on both sides. The airbags inflate and restrain the child's position. At the same time, the air pressure in cavity one increases, pushing the piston plate to move to the right end of the air pipe. This causes the moving column, moving plate and permanent magnet block one to move synchronously. Permanent magnet block one passes over the array of permanent magnet blocks two. Under the action of magnetic force and spring two, the seat bucket moves up and down in the fixed cylinder with the lifting column.

[0024] Step 3: When the moving plate pushes the sealing plate to squeeze the spring three, the air guide hole opens, and the gas enters the cavity two through the air guide hole, and then flows into the airbag tube through the air guide tube, pushing the locking pin to move outward of the movable hole; until the locking pin is embedded in the fixed hole on the fixed cylinder, the shaking mechanism stops running.

[0025] Step 4: Medical staff verify the correspondence between the puncture hole location and the child's back, and perform lumbar puncture through the puncture hole, keeping the tubing station in place throughout the process;

[0026] Step 5: Press the pressing column to push the air-blocking plate downwards and squeeze the spring four. The vent hole and the exhaust hole are aligned. The gas in cavity one flows into the exhaust box through the connecting tube and is discharged. The air pressure in the airbag tube decreases, releasing the child's body position restraint and removing the child from the seat.

[0027] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0028] (1) This solution uses the coordinated design of air pump, airbag cushion and moving plate. The air pump supplies air so that the airbag cushion gradually squeezes and restrains the child's body position. At the same time, the moving plate moves with the air pressure to cover the air delivery pipe interface and automatically stops the gas delivery. This avoids the air pump continuously supplying air, which may cause excessive squeezing force and damage to the child. In addition, the one-way valve in the air delivery pipe prevents the gas from flowing backward and avoids air leakage that may cause restraint failure. The double protection greatly improves the safety of the child's body position during puncture and reduces the risk of operational errors.

[0029] (2) This scheme is set up with a shaking mechanism consisting of permanent magnet block one, permanent magnet block two, spring two, etc. During the inflation of the airbag, the air pressure of cavity one pushes the moving plate to move permanent magnet block one, which generates magnetic force with permanent magnet block two. In conjunction with spring two, the seat bucket shakes up and down. At the same time, the bracket holds electronic devices to play videos. This dual soothing method distracts the child's attention, alleviates their fear and resistance during puncture, and improves their cooperation in diagnosis and treatment.

[0030] (3) In this scheme, after the moving plate pushes the sealing plate to open the air duct, the gas flows into the airbag tube, causing it to expand and push the locking pin. When the locking pin is embedded in the fixing hole of the fixing cylinder, the lifting column and the fixing cylinder are locked, so that the seat remains stable during puncture. The puncture hole is preset on the backrest, so there is no need to adjust the fixed position before puncture. This simplifies the operation process, reduces the impact of position changes on puncture accuracy, and improves the convenience of operation for medical staff.

[0031] (4) The inner wall of the seat is fixed with a handle to guide the child to position his hands properly and avoid his hands being squeezed by the airbag. After the puncture is completed, pressing the pressure column will release the pressure in the cavity through the air box. The airbag will contract to release the restraint. At the same time, the elastic contraction of the airbag tube will pull back the locking pin and release the shaking mechanism. The whole device is simple to operate and the restraint and release process is efficient. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0033] Figure 1This is an overall appearance view of the present invention;

[0034] Figure 2 This is a schematic diagram of the air pump part of the present invention;

[0035] Figure 3 This is a schematic diagram of the structure of the permanent magnet block at two locations in this invention;

[0036] Figure 4 This is a cross-sectional view of the bottom of the toilet seat of the present invention;

[0037] Figure 5 For the present invention Figure 4 Enlarged view of point A in the middle;

[0038] Figure 6 This is a cross-sectional view of the elastic support mechanism of the present invention;

[0039] Figure 7 This is a cross-sectional view of the interior of the exhaust box of the present invention.

[0040] Explanation of the labels in the diagram:

[0041] 1. Base; 2. Seat tub; 3. Backrest panel; 4. Puncture hole; 5. Air pump; 6. Air supply tube; 7. Airbag cushion; 8. Cavity 1; 9. Air tube; 10. Piston plate; 11. Moving column; 12. Spring 1; 13. Moving plate; 14. Permanent magnet 1; 15. Permanent magnet 2; 16. Cavity 2; 17. Air guide hole; 18. Sealing plate; 19. Spring 3; 20. Fixing block; 21. Air guide tube; 22. Lifting column; 23. Movable hole; 24. Airbag tube; 25. Locking pin column; 26. Fixing cylinder; 27. Fixing hole; 28. Spring 2; 29. ​​Exhaust box; 30. Exhaust hole; 31. Air blocking plate; 32. Air vent; 33. Spring 4; 34. Pressing column; 35. Connecting tube; 36. Connecting tube; 37. Bracket; 38. Handle. Detailed Implementation

[0042] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0043] Please see Figures 1 to 7A pediatric lumbar puncture fixation and restraint device includes a base 1, a seat 2 on top of the base 1, a backrest 3 fixedly installed on one side of the seat 2, a puncture hole 4 for performing lumbar puncture on the backrest 3, airbags 7 on the inner walls of the front and rear ends of the seat 2, and an air supply device for inflating the airbags 7. When the airbags 7 are inflated, they gradually expand to restrain the position of the child sitting in the seat 2 from both sides. A rocking component that can drive the seat 2 to move up and down is provided between the base 1 and the seat 2. A locking component is also provided inside the rocking component. When the airbags 7 are inflated to a preset restraint state, the locking component automatically locks the rocking component, fixing the seat 2 relative to the base 1.

[0044] The rocking assembly includes a cavity 8 formed at the bottom of the seat 2 and an elastic support mechanism between the base 1 and the seat 2. The cavity 8 is located on the air supply passage between the air supply component and the airbag cushion 7, and an air pipe 9 is installed inside it. One end of the air pipe 9 has an opening, and a piston plate 10 that can slide along its inner wall is installed inside it. A movable column 11 is fixedly connected to the side of the piston plate 10 away from the opening. The other end of the movable column 11 movably passes through the end of the air pipe 9 and is fixedly connected to a movable plate 13. A permanent magnet block 14 is installed on the movable plate 13. A spring 12 is sleeved on the movable column 11 between the piston plate 10 and the inner wall of the air pipe 9. Multiple sets of spaced permanent magnet blocks 15 are arranged on the upper surface of the base 1 along the moving path of the permanent magnet block 14. The interior of the cavity 8 is interconnected with the interior of the airbag cushion 7 through a connecting pipe 35.

[0045] The elastic support mechanism includes multiple sets of lifting columns 22 and fixed cylinders 26. The upper end of the lifting column 22 is fixedly connected to the bottom of the seat 2, the lower part of the lifting column 22 is sleeved in the fixed cylinder 26, the lower end of the fixed cylinder 26 is fixedly connected to the base 1, and a second spring 28 is provided inside the fixed cylinder 26. The upper end of the second spring 28 is connected to the lifting column 22, and its lower end is connected to the inner bottom wall of the fixed cylinder 26.

[0046] The air supply component is an air pump 5, which is installed below the base 1. The exhaust end of the air pump 5 is connected to an air supply pipe 6, which is made of a soft material. The end of the air supply pipe 6 away from the air pump 5 is connected to the cavity 8.

[0047] In this embodiment, the child is first seated curled up in the seat 2 with their back against the backrest 3. Then, the air pump 5 is turned on, and the air pump inflates the cavity 8 through the air supply pipe 6. At the same time, the gas in the cavity 8 flows into the airbag cushion 7 through the connecting pipe 35. The airbag cushions 7 on both sides of the child gradually move closer to the child. At this time, the air pressure in the cavity 8 will increase. The initial air pressure in the trachea 9 is the normal standard atmospheric pressure. As the air pressure in the cavity 8 increases, because the left side of the trachea 9 is... With the opening shape, the air pressure inside cavity 8 will push the left side of piston plate 10, causing piston plate 10 to move to the right end of air pipe 9. When piston plate 10 moves to the right, it will squeeze spring 12, and at the same time, it will drive moving column 11 and moving plate 13 to move together. When moving plate 13 moves, it will drive permanent magnet block 14 to move synchronously. When permanent magnet block 14 passes over permanent magnet block 2 15 discharged from the array, although permanent magnet block 14 is inside cavity 8 and permanent magnet block 2 15 is on base 1, the two do not contact each other, but can be constrained and controlled by magnetic force. Therefore, when permanent magnet block 14 passes over permanent magnet block 2 15, the two will generate mutual force. Regardless of whether the adjacent surfaces of permanent magnet block 14 and permanent magnet block 2 15 are like poles or unlike poles, when the force is generated, the seat 2 will move up and down under the action of spring 28, and at the same time, the lifting column 22 will move up and down in the fixed cylinder 26. This invention firstly provides a sense of envelopment for children through the structural design of the seat 2, thereby enhancing their sense of security. As the airbag 7 gradually inflates, it compresses and restrains the child's body position, which also achieves a sense of envelopment to a certain extent, improving the child's sense of security. At the same time, the seat 2 soothes the child by rocking up and down, preventing the child from having a strong reaction to external stimuli. In addition, a bracket 37 is fixedly installed at the upper end of the seat 2, on which a mobile phone or iPad can be placed to play the child's favorite videos, thereby further enhancing the soothing effect on the child.

[0048] In some embodiments of the present invention, when the movable plate 13 moves to the end of its stroke, it can cover the interface between the gas pipe 6 and the cavity 8, thus blocking the gas passage.

[0049] In this embodiment, as the moving plate 13 gradually moves towards the right end of the trachea 9, it gradually covers the connection between the gas delivery tube 6 and the cavity 8. This design effectively blocks subsequent gas delivery, preventing excessive pressure on the child and potential injury if the air pump 5 continues to supply air when the airbag 7 has reached its maximum compression constraint on the child's position. This design can mitigate the problem of excessive compression caused by operational errors to a certain extent. Furthermore, a one-way valve is installed inside the gas delivery tube 6. The valve ensures that gas can only be delivered into the cavity 8 in one direction and cannot flow in the opposite direction. This design aims to prevent air leakage in the cavity 8 or the airbag 7 after the child's position is fixed, which could cause a drop in air pressure within the airbag 7 and ultimately lose its restraining effect on the child's position, thus ensuring the stability of the fixed position. After the child's position is fixed using the above structure, medical personnel can directly perform puncture operations on the child through the pre-set puncture hole 4 on the backrest 3 without adjusting the already fixed position, improving operational convenience and safety.

[0050] In some embodiments of the present invention, the locking assembly includes a triggering mechanism and a locking execution mechanism; the triggering mechanism includes a second cavity 16 opened at the bottom of the seat 2, and an air guide hole 17 opened on the inner wall of the first cavity 8 and communicating with the second cavity 16; a fixing block 20 is fixedly disposed in the first cavity 8, a third spring 19 is fixedly connected to one side of the fixing block 20, and a sealing plate 18 for sealing the air guide hole 17 is fixedly connected to the end of the third spring 19 away from the fixing block 20; wherein, when the moving plate 13 moves to the end of its stroke, it pushes the sealing plate 18 to move against the elastic force of the third spring 19, thereby opening the air guide hole 17;

[0051] The locking actuator includes an air guide tube 21, an airbag tube 24, and a locking pin 25. One end of the air guide tube 21 is connected to the second cavity 16, and the other end is connected to the airbag tube 24. There are two sets of locking pins 25, which are respectively connected to both sides of the airbag tube 24. The side wall of the lifting column 22 is provided with a movable hole 23, and the side wall of the fixed cylinder 26 is provided with a corresponding fixed hole 27. The locking pin 25 is housed inside the lifting column 22 and corresponds to the movable hole 23. The locking actuator is configured such that when the air guide hole 17 is opened, gas is injected into the airbag tube 24 through the second cavity 16 and the air guide tube 21, causing it to expand and drive the locking pin 25 to pass through the movable hole 23 and the fixed hole 27 in sequence, thereby locking the lifting column 22 and the fixed cylinder 26 relative to each other.

[0052] In this embodiment, when the moving plate 13 is about to move to the connection interface between the gas supply tube 6 and cavity 8, it means that the gas supply operation will be automatically shut off. At this time, the shaking component needs to be locked to prevent the seat 2 from moving up and down during the puncture operation, which would affect the operation accuracy or cause safety risks. The locking mechanism of the present invention is as follows: when the moving plate 13 is about to reach the connection interface between the gas supply tube 6 and cavity 8, it will push the sealing plate 18, causing the sealing plate 18 to compress the spring 19. At the same time, the air guide hole 17 opens, and the gas in cavity 8 will enter cavity 16 through the air guide hole 17, and finally flow into the airbag tube 24 through the air guide tube 21. After the airbag tube 24 is inflated, it will expand to the left and right sides, thereby pushing the locking pin 25 to move outward of the movable hole 23. If the locking pin 25 is not aligned with the fixing hole 27 at this time, it cannot fully pass through the movable hole 23 due to the obstruction of the inner wall of the fixing cylinder 26. However, because the contact end between the locking pin 25 and the fixing cylinder 26 adopts a hemispherical design, the frictional resistance between them can be greatly reduced, ensuring that the locking pin 25 can move normally up and down within the fixing cylinder 26 with the lifting column 22. When the locking pin 25 is aligned with the fixing hole 27 during the movement, the air pressure in the airbag tube 24 will continuously squeeze the locking pin 25, causing it to be pushed out of the movable hole 23 and embedded in the fixing hole 27, thereby achieving relative locking between the lifting column 22 and the fixing cylinder 26, ensuring that the seat 2 is in a stable state, and providing a safe and reliable environment for medical personnel to perform puncture operations. In addition, the airbag tube 24 is made of elastic material. When the air pressure in the airbag tube 24 decreases, its own elastic contraction force will pull the locking pin 25 back from the fixing hole 27 to the inside of the lifting column 22, releasing the locking state between the lifting column 22 and the fixing cylinder 26, so as to carry out subsequent operations.

[0053] In some embodiments of the present invention, an exhaust box 29 is installed at one end of the base 1. An exhaust hole 30 is provided on the side wall of the exhaust box 29. An air-blocking plate 31 that can move up and down is provided inside the exhaust box 29. A spring 33 is fixedly connected between the lower end of the air-blocking plate 31 and the bottom wall of the exhaust box 29. In its natural state, the air-blocking plate 31 is sealed and covered by the spring 33. An air vent 32 is provided on the air-blocking plate 31. A pressing column 34 is fixedly connected to the upper end of the air-blocking plate 31. The upper end of the pressing column 34 moves through the top wall of the exhaust box 29 and extends to the outside. The exhaust box 29 is connected to the cavity 8 through the connecting pipe 36.

[0054] In this embodiment, after the puncture operation is completed, if it is necessary to release the child's body position fixation, the pressing column 34 can be squeezed downwards. After the pressing column 34 is subjected to force, it will push the air-blocking plate 31 downwards, causing the air-blocking plate 31 to move downwards synchronously and squeeze the spring 4 33. As the air-blocking plate 31 moves downwards, when the positions of the vent hole 32 and the vent hole 30 on the vent box 29 correspond, the gas in the cavity 8 will flow into the vent box 29 through the connecting pipe 36, and finally be discharged from the mutually aligned vent hole 32 and vent hole 30, thereby realizing the overall depressurization operation of the cavity 8 and the airbag cushion 7. After depressurization, the airbag cushion 7 will no longer exert pressure on the child due to the disappearance of air pressure, thereby releasing the fixation constraint on the child's body position and making it convenient to remove the child from the seat 2.

[0055] In some embodiments of the present invention, a handle bar 38 is also fixedly connected to the inner wall of the seat 2. When a child enters the seat 2 and adjusts to a suitable sitting posture, he / she can naturally hold the handle bar 38 with both hands. At the same time, combined with the children's favorite videos played on the mobile phone or iPad placed on the support 37 at the upper end of the seat 2, the video can distract the child's attention and help soothe him / her. The handle bar 38 can also guide the child to properly position his / her hands, effectively preventing the child from being accidentally squeezed by the airbag 7 during the process of the airbag 7 inflating and squeezing to fix the body position due to random hand placement, which could cause discomfort or injury.

[0056] The present invention also provides a fixation and restraint method applicable to the above-mentioned lumbar puncture fixation and restraint device for children, comprising the following steps:

[0057] Step 1: Place the mobile phone or iPad on the support 37, guide the child to enter the seat 2 in a curled-up position, instruct the child to hold the handles 38 on the inner wall of the seat 2 with both hands, assist the child to press their back against the backrest 3, adjust the child's body position, and keep the child's spine and backrest 3 at a preset relative angle.

[0058] Step 2: Start the air pump 5. The air pump 5 delivers gas to the cavity 8 through the air supply pipe 6. The gas flows through the cavity 8 and the connecting pipe 35 to the airbag pads 7 on both sides. The airbag pads 7 inflate and restrain the child's body position. At the same time, the air pressure in the cavity 8 increases, pushing the piston plate 10 to move to the right end of the air pipe 9, which drives the moving column 11, the moving plate 13 and the permanent magnet block 14 to move synchronously. The permanent magnet block 14 passes over the array of permanent magnet blocks 15. Under the action of magnetic force and spring 28, the seat 2 moves up and down in the fixed cylinder 26 with the lifting column 22.

[0059] Step 3: When the moving plate 13 pushes the sealing plate 18 to compress the spring 3 19, the air guide hole 17 opens, and the gas enters the cavity 2 16 through the air guide hole 17, and then flows into the airbag tube 24 through the air guide tube 21, pushing the locking pin 25 to move outward of the movable hole 23; until the locking pin 25 is embedded in the fixing hole 27 on the fixing cylinder 26, the shaking mechanism stops running.

[0060] Step 4: Medical staff verify the correspondence between the position of puncture hole 4 and the child's back, and perform lumbar puncture through puncture hole 4, keeping the seat 2 stationary during the process.

[0061] Step 5: Press the pressing column 34 to push the air-blocking plate 31 downward and squeeze the spring 4 33. The vent 32 aligns with the exhaust port 30. The gas in cavity 1 8 flows into the exhaust box 29 through the connecting pipe 36 and is discharged. The air pressure in the airbag tube 24 decreases, releasing the child's body position restraint and removing the child from the seat 2.

[0062] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concepts, should be covered within the scope of protection of the present invention.

Claims

1. A pediatric lumbar puncture fixation and restraint device, comprising a base (1), characterized in that: A seat (2) is provided above the base (1). A backrest (3) is fixedly installed on one side of the seat (2). A puncture hole (4) for lumbar puncture is provided through the backrest (3). Airbags (7) are provided on the inner walls of the front and rear ends of the seat (2). The airbags (7) are connected to an air supply device for inflation. When the airbags (7) are inflated, they gradually expand to restrain the position of the child sitting in the seat (2) from both sides. A rocking component capable of driving the seat (2) to move up and down is provided between the base (1) and the seat (2). A locking component is also provided inside the rocking component. When the airbag (7) is inflated to a preset constraint state, the locking component automatically locks the rocking component, so that the seat (2) is fixed relative to the base (1).

2. The pediatric lumbar puncture fixation and restraint device according to claim 1, characterized in that: The rocking assembly includes a cavity (8) at the bottom of the seat (2) and an elastic support mechanism between the base (1) and the seat (2); the cavity (8) is located on the air supply passage between the air supply component and the airbag cushion (7), and an air pipe (9) is installed inside it; one end of the air pipe (9) is provided with an opening, and a piston plate (10) that can slide along its inner wall is provided inside it; a moving column (11) is fixedly connected to the side of the piston plate (10) away from the opening; the other end of the moving column (11) movably passes through the end of the air pipe (9) and is fixedly connected to the moving plate (13); a permanent magnet block (14) is installed on the moving plate (13); a spring (12) is sleeved on the moving column (11) between the piston plate (10) and the inner wall of the air pipe (9); and multiple sets of spaced permanent magnet blocks (15) are provided on the upper surface of the base (1) on the moving path of the permanent magnet block (14). The interior of the cavity (8) is connected to the interior of the airbag (7) via a connecting pipe (35).

3. The pediatric lumbar puncture fixation and restraint device according to claim 2, characterized in that: The elastic support mechanism includes multiple sets of lifting columns (22) and fixed cylinders (26). The upper end of the lifting column (22) is fixedly connected to the bottom of the seat (2). The lower part of the lifting column (22) is sleeved inside the fixed cylinder (26). The lower end of the fixed cylinder (26) is fixedly connected to the base (1). A second spring (28) is provided inside the fixed cylinder (26). The upper end of the second spring (28) is connected to the lifting column (22), and its lower end is connected to the inner bottom wall of the fixed cylinder (26).

4. The pediatric lumbar puncture fixation and restraint device according to claim 3, characterized in that: The locking assembly includes a triggering mechanism and a locking execution mechanism; the triggering mechanism includes a second cavity (16) opened at the bottom of the seat (2) and an air duct (17) opened on the inner wall of the first cavity (8) and communicating with the second cavity (16); a fixing block (20) is fixedly installed in the first cavity (8), a third spring (19) is fixedly connected to one side of the fixing block (20), and a sealing plate (18) for sealing the air duct (17) is fixedly connected to the end of the third spring (19) away from the fixing block (20); When the moving plate (13) moves to the end of its stroke, it pushes the sealing plate (18) to overcome the elastic force of the spring three (19) and opens the air guide hole (17).

5. The pediatric lumbar puncture fixation and restraint device according to claim 4, characterized in that: The locking actuator includes an air guide tube (21), an airbag tube (24), and a locking pin (25). One end of the air guide tube (21) is connected to the second cavity (16), and the other end is connected to the airbag tube (24); there are two sets of locking pins (25), which are respectively connected to the two sides of the airbag tube (24); the side wall of the lifting column (22) is provided with a movable hole (23), and the side wall of the fixed cylinder (26) is provided with a corresponding fixed hole (27); the locking pin (25) is housed inside the lifting column (22) and corresponds to the movable hole (23). The locking actuator is configured such that when the air vent (17) is opened, gas is filled into the airbag tube (24) through the cavity two (16) and the air vent tube (21), causing it to expand and drive the locking pin (25) to pass through the movable hole (23) and the fixed hole (27) in sequence, locking the lifting pin (22) and the fixed cylinder (26) relative to each other.

6. The pediatric lumbar puncture fixation and restraint device according to claim 5, characterized in that: The air supply component is an air pump (5), which is installed below the base (1). The exhaust end of the air pump (5) is connected to an air supply pipe (6), which is made of a soft material. The end of the air supply pipe (6) away from the air pump (5) is connected to the cavity (8).

7. A pediatric lumbar puncture fixation and restraint device according to claim 6, characterized in that: When the movable plate (13) moves to the end of its stroke, it can cover the interface connecting the gas pipe (6) and the cavity (8), thus blocking the gas passage.

8. A pediatric lumbar puncture fixation and restraint device according to claim 7, characterized in that: The base (1) is equipped with an exhaust box (29) at one end. The side wall of the exhaust box (29) is provided with an exhaust hole (30). Inside the exhaust box (29) is a gas-blocking plate (31) that can move up and down. The lower end of the gas-blocking plate (31) is fixedly connected to the bottom wall of the exhaust box (29) with a spring (33). In its natural state, the gas-blocking plate (31) is sealed and covered by the spring (33) to cover the exhaust hole (30). The gas-blocking plate (31) is provided with a vent hole (32). The upper end of the gas-blocking plate (31) is fixedly connected with a pressing column (34). The upper end of the pressing column (34) moves through the top wall of the exhaust box (29) and extends to the outside. The exhaust box (29) is connected to the cavity (8) through a connecting pipe (36).

9. A pediatric lumbar puncture fixation and restraint device according to claim 8, characterized in that: A bracket (37) is fixedly installed at the upper end of the seat (2), and a handle (38) is fixedly connected to the inner wall of the seat (2).

10. A method for fixing and restraining a child lumbar puncture fixation and restraint device as described in claim 9, characterized in that: Includes the following steps: Step 1: Place the mobile phone or iPad on the stand (37), guide the child to enter the seat (2) in a curled-up position, instruct the child to hold the handles (38) on the inner wall of the seat (2) with both hands, assist the child to press their back against the backrest (3), adjust the child's body position so that the child's spine and the backrest (3) maintain a preset relative angle. Step 2, start the air pump (5), the air pump (5) delivers gas to the first cavity (8) through the air supply pipe (6), the gas flows through the first cavity (8) through the connecting pipe (35) to the airbag pads (7) on both sides, the airbag pads (7) expand to restrain the child's body position; at the same time, the air pressure in the first cavity (8) increases and pushes the piston plate (10) to move to the right end of the air pipe (9), driving the moving column (11), the moving plate (13) and the first permanent magnet block (14) to move synchronously. The first permanent magnet block (14) passes over the array of the second permanent magnet block (15), and under the action of the magnetic force and the second spring (28), the seat (2) moves up and down in the fixed cylinder (26) with the lifting column (22); Step 3: When the moving plate (13) pushes the sealing plate (18) to squeeze the spring three (19), the air guide hole (17) opens, and the gas enters the cavity two (16) through the air guide hole (17), and then flows into the airbag tube (24) through the air guide tube (21), pushing the locking pin (25) to move outward of the movable hole (23); until the locking pin (25) is embedded in the fixing hole (27) on the fixed cylinder (26), the shaking mechanism stops running; Step 4: Medical staff verify the correspondence between the puncture hole (4) and the child's back, and perform lumbar puncture through the puncture hole (4), keeping the seat (2) without displacement during the process; Step 5: Press the pressing column (34) to push the air-blocking plate (31) downward and squeeze the spring four (33). The vent hole (32) aligns with the exhaust hole (30). The gas in cavity one (8) flows into the exhaust box (29) through the connecting pipe (36) and is discharged. The air pressure in the airbag tube (24) decreases, releasing the child's body position restraint and removing the child from the seat (2).

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