Lumbar puncture lateral position adjustment holding device

Abstract

This invention discloses a lateral decubitus position adjustment and maintenance device for lumbar puncture, relating to the field of biomedical engineering technology. It includes a base plate, on the upper surface of which a leg limiting mechanism and a head limiting mechanism are provided. These two mechanisms are linked by a transmission mechanism. The leg limiting mechanism includes a rectangular guide hole on the upper surface of the base plate, and a first threaded rod is rotatably connected to the inner wall of the rectangular guide hole. This invention, by providing a transmission mechanism between the leg and head limiting mechanisms, enables synchronous and reverse movement of an arc-shaped baffle and a leg-holding column. This allows for precise and simultaneous limiting and fixation of the patient's legs and head, ensuring that the patient maintains a standard lateral decubitus position throughout the lumbar puncture process. This avoids the puncture needle deviating from its target position due to body movement or displacement, reducing the risk of puncture injury and improving the success rate and safety of the puncture procedure.

Description

Technical Field

[0001] This invention relates to the field of biomedical engineering technology, specifically to a device for adjusting and maintaining lateral decubitus position during lumbar puncture. Background Technology

[0002] In the field of biomedical engineering, lumbar puncture is an indispensable core procedure in the diagnosis and treatment of central nervous system diseases. The standard position requires the patient's spine to be parallel to the operating plane, back straight, and knees bent and close to the chest, so as to fully expand the lumbar intervertebral space.

[0003] However, current clinical applications of lumbar puncture still have many technical deficiencies in maintaining the patient's position, making it difficult to meet practical requirements: First, current clinical practice relies heavily on manual support from medical staff, lacking dedicated positioning devices. Manual support makes it difficult to achieve continuous and stable positional fixation, further amplifying the operational risks. Second, medical staff need to continuously assist in fixing the patient's limbs throughout the puncture process, which not only consumes a lot of physical strength but also requires them to pay attention to changes in position, making it difficult for them to fully concentrate on the puncture procedure itself and prolonging the operation time. Summary of the Invention

[0004] The purpose of this invention is to provide a device for adjusting and maintaining the lateral decubitus position during lumbar puncture, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a lumbar puncture lateral decubitus position adjustment and maintenance device, comprising a base plate, wherein a leg limiting mechanism and a head limiting mechanism are provided on the upper surface of the base plate, and the leg limiting mechanism and the head limiting mechanism are linked together by a transmission mechanism; The leg limiting mechanism includes a rectangular guide hole on the upper surface of the base plate. A first threaded rod is rotatably connected to the inner wall of the rectangular guide hole. A movable base block is threadedly connected to the surface of the first threaded rod. The top of the movable base block extends to the upper surface of the base plate and is fixedly connected to a leg abutment post. The head limiting mechanism includes a limiting mounting plate fixedly connected to the upper surface of the base plate. The surface of the limiting mounting plate is provided with a mounting shaft hole. The inner wall of the mounting shaft hole is rotatably connected to a threaded sleeve through a bearing. The inner wall of the threaded sleeve is threadedly connected to a second threaded rod. One end of the second threaded rod is fixedly connected to an arc-shaped baffle.

[0006] Preferably, the transmission mechanism includes a mounting shell fixedly connected to the lower surface of the base plate. A drive motor is fixedly connected to the surface of the mounting shell. The rotating shaft of the drive motor extends into the interior of the mounting shell and is fixedly connected to a worm gear. Two fixing brackets are fixedly connected to the lower surface of the base plate. A transmission shaft is rotatably connected to the surfaces of the two fixing brackets. One end of the transmission shaft extends into the interior of the mounting shell, and a worm wheel is fixedly connected to the surface of the transmission shaft. The position of the worm wheel corresponds to that of the worm gear, and the worm gear meshes with the worm wheel.

[0007] Preferably, a first synchronous pulley is fixedly connected to one end of the transmission shaft, and a second synchronous pulley is fixedly connected to the surface of the threaded sleeve. The second synchronous pulley is located directly above the first synchronous pulley, and a first transmission belt is installed between the first synchronous pulley and the second synchronous pulley. The first synchronous pulley and the second synchronous pulley are connected by the first transmission belt.

[0008] Preferably, a transmission groove is formed on the lower surface of the base plate, one end of the first threaded rod extends into the interior of the transmission groove and is fixedly connected to a linkage shaft, the end of the linkage shaft away from the first threaded rod is rotatably connected to the inner wall of the transmission groove, and a third synchronous pulley is fixedly connected to the surface of the linkage shaft, and a fourth synchronous pulley is fixedly connected to the end of the transmission shaft away from the first synchronous pulley, the position of the fourth synchronous pulley corresponds to the third synchronous pulley, and a second transmission belt is installed between the third synchronous pulley and the fourth synchronous pulley.

[0009] By setting a transmission mechanism between the leg limiting mechanism and the head limiting mechanism, the arc-shaped baffle and the leg abutment column can move synchronously and in opposite directions, thereby simultaneously and accurately limiting and fixing the patient's legs and head. This ensures that the patient maintains a standard lateral decubitus position throughout the lumbar puncture process, avoiding the puncture needle from deviating from the target position due to body swaying or displacement, reducing the risk of puncture injury, and improving the success rate and safety of the puncture operation.

[0010] Preferably, a rubber pad is fixedly fitted on the surface of the leg abutment post, and a limit stop is fixedly connected to the top of the leg abutment post, and the movable bottom block is slidably connected to the inner wall of the rectangular guide hole.

[0011] Preferably, extension plates are fixedly connected to both the left and right sides of the limiting mounting plate, and limiting through holes are opened on the surface of the extension plates. Positioning blocks are fixedly connected to both sides of the arc-shaped baffle, and limiting rods are fixedly connected to the surface of the positioning blocks. The size of the limiting through holes matches the limiting rods, and the limiting rods are slidably connected to the surface of the extension plates through the limiting through holes.

[0012] Preferably, a support spring is sleeved on the surface of the limiting rod, one end of the support spring is fixedly connected to the surface of the positioning block, and the other end of the support spring is fixedly connected to the surface of the extension plate.

[0013] Preferably, a first sponge protective pad is fixedly connected to the inner side of the arc-shaped baffle, and the position of the arc-shaped baffle corresponds to the patient's head. The lower surface of the arc-shaped baffle is slidably connected to the upper surface of the base plate.

[0014] Preferably, the left side of the base plate has several mounting holes, and an adjusting block is installed on the inner wall of each mounting hole. An L-shaped bracket is fixedly connected to the upper surface of the adjusting block, a handle is fixedly connected to the surface of the L-shaped bracket, and an anti-slip soft sleeve is fixedly connected to the surface of the handle. The several mounting holes are evenly arranged in a linear array on the surface of the base plate. The lower surface of the base plate has several positioning screw holes, and a positioning bolt is threaded to the inner wall of each positioning screw hole. The position of each positioning screw hole corresponds to one of the mounting holes. The lower surface of the adjusting block has a positioning groove that matches the positioning bolt.

[0015] By setting multiple sets of mounting holes and grips on the base plate, the position of the grips can be flexibly adjusted, making it convenient for patients to hold the grips for body assistance during injection anesthesia. It can also be adapted to the body size of patients of different heights and body types, improving the versatility of the device.

[0016] Preferably, a side baffle is fixedly connected to the upper surface of the base plate. The side baffle is used to block and limit the patient's bent knee. A second sponge protective pad is fixedly connected to the surface of the side baffle. The side baffle is located on the left side of the leg-holding column.

[0017] Compared with the prior art, the beneficial effects of the present invention are: (1) By setting a transmission mechanism between the leg limiting mechanism and the head limiting mechanism, the arc-shaped baffle and the leg abutment column can move synchronously and in opposite directions, thereby simultaneously and accurately limiting and fixing the patient's legs and head, ensuring that the patient always maintains a standard lateral decubitus position during lumbar puncture, avoiding the puncture needle from deviating from the target position due to body shaking or displacement, reducing the risk of puncture injury, and improving the success rate and safety of puncture operation; the device can automatically maintain the patient's standard lateral decubitus position, eliminating the need for medical staff to manually support and fix the patient during puncture, reducing the physical exertion of medical staff; at the same time, precise positioning can shorten the puncture operation time, reduce the workload of medical staff, and create a more efficient working environment for puncture operation.

[0018] (2) By setting multiple sets of mounting holes and grips on the base plate, the position of the grips can be flexibly adjusted, making it convenient for patients to hold the grips for body assistance during injection anesthesia. It can also be adapted to the body size of patients of different heights and body types, improving the versatility of the device. The rubber pads on the surface of the legs pressing against the column, the first sponge protective pad on the inner side of the arc-shaped baffle, and the second sponge protective pad on the side baffle can effectively buffer the pressure during the limit and avoid discomfort caused by local pressure. Attached Figure Description

[0019] Figure 1 This is a front view structural diagram of the present invention; Figure 2 This is a schematic diagram of the right-side view structure of the present invention; Figure 3 This is a schematic diagram of the left side view structure of the present invention; Figure 4 for Figure 3 Enlarged structural diagram at point A; Figure 5 This is a schematic diagram of the bottom view structure of the base plate of the present invention; Figure 6 This is a bottom-view structural diagram of the present invention; Figure 7 for Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the front section structure of the leg-supporting column of the present invention; In the diagram: 1. Base plate; 2. Leg limiting mechanism; 3. Head limiting mechanism; 4. Transmission mechanism; 5. Mounting hole; 6. Adjusting block; 7. L-shaped bracket; 8. Handle; 9. Anti-slip soft sleeve; 10. Positioning screw hole; 11. Positioning bolt; 12. Side baffle; 13. Second sponge protective pad; 201. Rectangular guide hole; 202. First threaded rod; 203. Movable base block; 204. Leg clamping post; 205. Limiting stop plate; 301. Limiting mounting plate; 302. Threaded sleeve; 303. Second threaded rod; 304. Arc-shaped baffle; 305. Extension plate; 306. Positioning block; 307. Limiting rod; 308. Support spring; 309. First sponge protective pad; 401. Mounting housing; 402. Drive motor; 403. Worm gear; 404. Transmission shaft; 405. Worm wheel; 406. First synchronous pulley; 407. Second synchronous pulley; 408. First transmission belt; 409. Transmission groove; 410. Linkage shaft; 411. Third synchronous pulley; 412. Fourth synchronous pulley; 413. Second transmission belt. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-8The present invention provides a technical solution: a lumbar puncture lateral decubitus position adjustment and maintenance device, including a base plate 1, a leg limiting mechanism 2 and a head limiting mechanism 3 are provided on the upper surface of the base plate 1, and the leg limiting mechanism 2 and the head limiting mechanism 3 are linked together by a transmission mechanism 4.

[0022] The left side of the base plate 1 has several mounting holes 5. An adjusting block 6 is installed on the inner wall of the mounting hole 5. An L-shaped bracket 7 is fixedly connected to the upper surface of the adjusting block 6. A handle 8 is fixedly connected to the surface of the L-shaped bracket 7. An anti-slip soft sleeve 9 is fixedly connected to the surface of the handle 8. The mounting holes 5 are evenly arranged in a straight line array on the surface of the base plate 1. The lower surface of the base plate 1 has several positioning screw holes 10. A positioning bolt 11 is threadedly connected to the inner wall of the positioning screw hole 10. The position of the positioning screw hole 10 corresponds one-to-one with the mounting hole 5. The lower surface of the adjusting block 6 has a positioning groove that matches the positioning bolt 11.

[0023] Assist the patient to rest their arm naturally on the grip bar 8 and hold the non-slip soft sleeve 9, providing auxiliary support and reducing fatigue caused by maintaining the position. The non-slip design of the grip bar 8 effectively prevents the patient's hand from slipping, avoiding body displacement due to hand slippage. At the same time, the multi-position adjustable design can adapt to the arm length of patients of different heights, improving the versatility of the device.

[0024] The leg limiting mechanism 2 includes a rectangular guide hole 201 opened on the upper surface of the base plate 1. A first threaded rod 202 is rotatably connected to the inner wall of the rectangular guide hole 201. A movable base block 203 is threadedly connected to the surface of the first threaded rod 202. The top end of the movable base block 203 extends to the upper surface of the base plate 1 and is fixedly connected to a leg abutment post 204.

[0025] A rubber pad is fixedly fitted on the surface of the leg abutment post 204, and a limit stop plate 205 is fixedly connected to the top of the leg abutment post 204. The movable base block 203 is slidably connected to the inner wall of the rectangular guide hole 201.

[0026] During the limiting process, the limiting rods 307 on both sides of the arc-shaped baffle 304 slide along the limiting through holes of the extension plate 305 to ensure that the arc-shaped baffle 304 moves smoothly and avoids deviation; the elastic force of the support spring 308 can buffer the pressing pressure of the arc-shaped baffle 304 on the head, avoiding excessive local pressure that could cause patient discomfort; the rubber pad of the leg-clamping column 204 and the first sponge protective pad 309 of the arc-shaped baffle 304 can reduce hard contact and improve patient comfort. The side baffle 12 blocks the patient's bent knee, and the second sponge protective pad 13 buffers the contact pressure between the knee and the side baffle 12, further enhancing the stability of the leg fixation and preventing the patient's leg from sliding forward and causing spinal displacement.

[0027] A side baffle 12 is fixedly connected to the upper surface of the base plate 1. The side baffle 12 is used to block and limit the patient's bent knee. A second sponge protective pad 13 is fixedly connected to the surface of the side baffle 12. The side baffle 12 is located on the left side of the leg abutment post 204.

[0028] The head limiting mechanism 3 includes a limiting mounting plate 301 fixedly connected to the upper surface of the base plate 1. The surface of the limiting mounting plate 301 is provided with a mounting shaft hole. The inner wall of the mounting shaft hole is rotatably connected to a threaded sleeve 302 through a bearing. The inner wall of the threaded sleeve 302 is threadedly connected to a second threaded rod 303. One end of the second threaded rod 303 is fixedly connected to an arc-shaped baffle 304.

[0029] Extension plates 305 are fixedly connected to both sides of the limiting mounting plate 301. Limiting through holes are opened on the surface of the extension plates 305. Positioning blocks 306 are fixedly connected to both sides of the arc-shaped baffle 304. Limiting rods 307 are fixedly connected to the surface of the positioning blocks 306. The size of the limiting through holes matches the limiting rods 307. The limiting rods 307 are slidably connected to the surface of the extension plates 305 through the limiting through holes. A support spring 308 is sleeved on the surface of the limiting rods 307. One end of the support spring 308 is fixedly connected to the surface of the positioning blocks 306, and the other end of the support spring 308 is fixedly connected to the surface of the extension plates 305.

[0030] The inner side of the arc-shaped baffle 304 is fixedly connected to the first sponge protective pad 309, and the position of the arc-shaped baffle 304 corresponds to the patient's head. The lower surface of the arc-shaped baffle 304 is slidably connected to the upper surface of the base plate 1.

[0031] The transmission mechanism 4 includes a mounting shell 401 fixedly connected to the lower surface of the base plate 1. A drive motor 402 is fixedly connected to the surface of the mounting shell 401. The rotating shaft of the drive motor 402 extends into the interior of the mounting shell 401 and is fixedly connected to a worm gear 403. Two fixed brackets are fixedly connected to the lower surface of the base plate 1. A transmission shaft 404 is rotatably connected to the surfaces of the two fixed brackets. One end of the transmission shaft 404 extends into the interior of the mounting shell 401, and a worm wheel 405 is fixedly connected to the surface of the transmission shaft 404. The position of the worm wheel 405 corresponds to that of the worm gear 403, and the worm gear 403 meshes with the worm wheel 405.

[0032] One end of the drive shaft 404 is fixedly connected to a first synchronous pulley 406, and a second synchronous pulley 407 is fixedly connected to the surface of the threaded sleeve 302. The second synchronous pulley 407 is located directly above the first synchronous pulley 406, and a first transmission belt 408 is installed between the first synchronous pulley 406 and the second synchronous pulley 407. The first synchronous pulley 406 and the second synchronous pulley 407 are connected by the first transmission belt 408.

[0033] A transmission groove 409 is provided on the lower surface of the base plate 1. One end of the first threaded rod 202 extends into the interior of the transmission groove 409 and is fixedly connected to a linkage shaft 410. The end of the linkage shaft 410 away from the first threaded rod 202 is rotatably connected to the inner wall of the transmission groove 409. A third synchronous pulley 411 is fixedly connected to the surface of the linkage shaft 410. A fourth synchronous pulley 412 is fixedly connected to the end of the transmission shaft rod 404 away from the first synchronous pulley 406. The position of the fourth synchronous pulley 412 corresponds to that of the third synchronous pulley 411. A second transmission belt 413 is installed between the third synchronous pulley 411 and the fourth synchronous pulley 412.

[0034] Once the patient's position is stabilized, medical staff can perform the lumbar puncture. Because the device precisely maintains the patient's standard lateral decubitus position, it prevents the puncture needle from deviating from its target position due to patient movement or displacement, reducing the risk of damage to the spinal cord, blood vessels, and other tissues, and improving the success rate and safety of the puncture procedure. Simultaneously, the device automatically maintains the patient's position, eliminating the need for manual support and fixation during the puncture, reducing the physical exertion of medical staff, shortening the puncture procedure time, and lowering their workload, creating a more efficient working environment for the procedure.

[0035] Working principle: First, guide the patient to lie on their side on the upper surface of the base plate 1, ensuring that the patient's spine is aligned with the length of the base plate 1, with the head facing the head limiting mechanism 3 and the legs facing the leg limiting mechanism 2, and the bent knee close to the side baffle 12. Then, start the drive motor 402, whose rotating shaft drives the worm gear 403 to rotate. Since the worm gear 403 meshes with the worm wheel 405, the rotational motion of the worm gear 403 is converted into the rotational motion of the worm wheel 405, which in turn drives the transmission shaft 404 to rotate around its own axis. The first synchronous pulley 406 at one end of the transmission shaft 404 rotates with the transmission shaft 404, driving the second synchronous pulley 407 to rotate via the first transmission belt 408. The second synchronous pulley 407 is fixedly connected to the threaded sleeve 302, thereby driving the threaded sleeve 302 to rotate. Since the second threaded rod 303 is threadedly connected to the threaded sleeve 302, and the arc-shaped baffle 304 is slidably connected to the extension plate 305 via the limiting rod 307, restricting the rotation of the second threaded rod 303, the rotational motion of the threaded sleeve 302 is converted into the linear reciprocating motion of the second threaded rod 303, driving the arc-shaped baffle 304 to move along the length of the base plate 1, thus allowing the head to approach or move away from the limiting position. The fourth synchronous pulley 412 at the other end of the transmission shaft 404 rotates with the transmission shaft 404, driving the third synchronous pulley 411 to rotate via the second transmission belt 413. The third synchronous pulley 411 is fixedly connected to the linkage shaft 410, and the linkage shaft 410 is fixedly connected to the first threaded rod 202, thereby driving the first threaded rod 202 to rotate. Since the movable base 203 is threadedly connected to the first threaded rod 202 and the movable base 203 is slidably connected to the rectangular guide hole 201, the rotation of the movable base 203 is restricted. Therefore, the rotational motion of the first threaded rod 202 is converted into the linear reciprocating motion of the movable base 203, which drives the leg abutment column 204 to move along the width direction of the base plate 1, thereby achieving the limit of the leg moving closer to or further away.

[0036] The curved baffle 304 is designed to fit the contour of the human head. By moving towards the head, it presses against the patient's head from the side, limiting lateral head movement. The leg-holding column 204 presses against the patient's legs from the outside of the thigh, limiting lateral leg movement. The side baffle 12 blocks the patient's bent knees, limiting forward and backward leg sliding. These three elements work together to achieve comprehensive body restraint, ensuring that the patient always maintains a standard lateral decubitus position for lumbar puncture, providing a stable positional basis for the puncture procedure.

[0037] The rubber pads on the surface of the leg-clamping post 204, the first sponge protective pad 309 on the inner side of the arc-shaped baffle 304, and the second sponge protective pad 13 on the surface of the side baffle 12 are all made of soft medical-grade protective materials. These materials effectively cushion the pressure between the limiting components and the patient's body, preventing skin damage or discomfort caused by localized pressure. The elastic design of the support spring 308 adapts to slight movements of the patient's head, cushioning additional pressure through elastic deformation. It also automatically adjusts the clamping force during the limiting process, improving patient comfort and tolerance.

[0038] The grip bar 8 is mounted on the left side of the base plate 1 via an L-shaped bracket 7 and an adjustment block 6. Its position can be adjusted according to the patient's height, allowing the patient's arm to naturally grip it when lying on their side. Holding the grip bar 8 provides the patient with additional support, reducing pressure on the spine and enhancing their sense of security, while also reducing fatigue from maintaining the position. The anti-slip design of the soft sleeve 9 prevents the patient's hands from slipping, ensuring the stability of the auxiliary support and further improving the patient's positional stability.

Claims

1. A device for adjusting and maintaining lateral decubitus position during lumbar puncture, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is provided with a leg limiting mechanism (2) and a head limiting mechanism (3), and the leg limiting mechanism (2) and the head limiting mechanism (3) are linked together through a transmission mechanism (4); The leg limiting mechanism (2) includes a rectangular guide hole (201) on the upper surface of the base plate (1). The inner wall of the rectangular guide hole (201) is rotatably connected to a first threaded rod (202). The surface of the first threaded rod (202) is threadedly connected to a movable base block (203). The top end of the movable base block (203) extends to the upper surface of the base plate (1) and is fixedly connected to a leg abutment post (204). The head limiting mechanism (3) includes a limiting mounting plate (301) fixedly connected to the upper surface of the base plate (1). The surface of the limiting mounting plate (301) is provided with a mounting shaft hole. The inner wall of the mounting shaft hole is rotatably connected to a threaded sleeve (302) through a bearing. The inner wall of the threaded sleeve (302) is threadedly connected to a second threaded rod (303). One end of the second threaded rod (303) is fixedly connected to an arc-shaped baffle (304).

2. The lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 1, characterized in that: The transmission mechanism (4) includes a mounting shell (401) fixedly connected to the lower surface of the base plate (1). A drive motor (402) is fixedly connected to the surface of the mounting shell (401). The rotating shaft of the drive motor (402) extends into the interior of the mounting shell (401) and is fixedly connected to a worm gear (403). Two fixed brackets are fixedly connected to the lower surface of the base plate (1). A transmission shaft (404) is rotatably connected to the surface of the two fixed brackets. One end of the transmission shaft (404) extends into the interior of the mounting shell (401), and a worm wheel (405) is fixedly connected to the surface of the transmission shaft (404). The position of the worm wheel (405) corresponds to that of the worm gear (403), and the worm gear (403) meshes with the worm wheel (405).

3. The lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 2, characterized in that: One end of the drive shaft (404) is fixedly connected to a first synchronous pulley (406), and a second synchronous pulley (407) is fixedly connected to the surface of the threaded sleeve (302). The second synchronous pulley (407) is located directly above the first synchronous pulley (406), and a first transmission belt (408) is installed between the first synchronous pulley (406) and the second synchronous pulley (407). The first synchronous pulley (406) and the second synchronous pulley (407) are connected by the first transmission belt (408).

4. The lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 3, characterized in that: The lower surface of the base plate (1) is provided with a transmission groove (409). One end of the first threaded rod (202) extends into the interior of the transmission groove (409) and is fixedly connected to a linkage shaft (410). The end of the linkage shaft (410) away from the first threaded rod (202) is rotatably connected to the inner wall of the transmission groove (409). A third synchronous pulley (411) is fixedly connected to the surface of the linkage shaft (410). A fourth synchronous pulley (412) is fixedly connected to the end of the transmission shaft rod (404) away from the first synchronous pulley (406). The position of the fourth synchronous pulley (412) corresponds to that of the third synchronous pulley (411). A second transmission belt (413) is installed between the third synchronous pulley (411) and the fourth synchronous pulley (412).

5. The lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 4, characterized in that: The surface of the leg bracing post (204) is fixedly fitted with a rubber pad, and the top of the leg bracing post (204) is fixedly connected to a limit stop plate (205). The movable bottom block (203) is slidably connected to the inner wall of the rectangular guide hole (201).

6. The lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 5, characterized in that: The left and right sides of the limiting mounting plate (301) are fixedly connected to extension plates (305). The surface of the extension plate (305) is provided with limiting through holes. The two sides of the arc-shaped baffle (304) are fixedly connected to positioning blocks (306). The surface of the positioning block (306) is fixedly connected to a limiting rod (307). The size of the limiting through hole matches the limiting rod (307), and the limiting rod (307) is slidably connected to the surface of the extension plate (305) through the limiting through hole.

7. A lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 6, characterized in that: The surface of the limiting rod (307) is fitted with a support spring (308), one end of the support spring (308) is fixedly connected to the surface of the positioning block (306), and the other end of the support spring (308) is fixedly connected to the surface of the extension plate (305).

8. A lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 7, characterized in that: The inner side of the arc-shaped baffle (304) is fixedly connected to a first sponge protective pad (309), and the position of the arc-shaped baffle (304) corresponds to the patient's head. The lower surface of the arc-shaped baffle (304) is slidably connected to the upper surface of the base plate (1).

9. A lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 1, characterized in that: The base plate (1) has several mounting holes (5) on its left side. An adjusting block (6) is installed on the inner wall of the mounting hole (5). An L-shaped bracket (7) is fixedly connected to the upper surface of the adjusting block (6). A handle (8) is fixedly connected to the surface of the L-shaped bracket (7). An anti-slip soft sleeve (9) is fixedly connected to the surface of the handle (8). Several mounting holes (5) are evenly arranged in a straight line array on the surface of the base plate (1). Several positioning screw holes (10) are opened on the lower surface of the base plate (1). A positioning bolt (11) is threadedly connected to the inner wall of the positioning screw hole (10). The position of the positioning screw hole (10) corresponds one-to-one with the mounting hole (5). A positioning slot matching the positioning bolt (11) is opened on the lower surface of the adjusting block (6).

10. A lateral decubitus position adjustment and maintenance device for lumbar puncture according to claim 1, characterized in that: A side baffle (12) is fixedly connected to the upper surface of the base plate (1). The side baffle (12) is used to block and limit the patient's bent knee. A second sponge protective pad (13) is fixedly connected to the surface of the side baffle (12). The side baffle (12) is located on the left side of the leg support column (204).

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