Fixing device for pediatric surgical operation

Abstract

The invention discloses a pediatric surgical operation fixing device which comprises an operating bed and an L-shaped pressing plate located above the operating bed, four supporting legs symmetrically distributed in pairs are fixedly connected to the lower surface of the operating bed, an air bag is installed on the L-shaped pressing plate, a first positioning mechanism used for driving the L-shaped pressing plate to move in the vertical direction is arranged below the operating bed, and a second positioning mechanism used for driving the L-shaped pressing plate to move in the vertical direction is arranged below the operating bed. And the second positioning mechanism is used for driving the L-shaped pressing plate to move in the horizontal direction. According to the device, the first positioning mechanism drives the L-shaped pressing plate to move downwards to the lowest point, so that the L-shaped pressing plate is close to a child patient, then the second positioning mechanism drives the L-shaped pressing plate to move to the preset position in the horizontal direction, so that the L-shaped pressing plate avoids the position where an operation is about to be conducted, and finally the air bag is inflated through an external air pump; according to the device, the air bag is arranged to limit the pediatric patient and prevent the pediatric patient from moving randomly, and vertical movement and horizontal movement of the L-shaped pressing plate can be controlled through the driving shaft, so that the overall convenience of the device is effectively improved.

Description

Technical Field

[0001] The present invention relates to the field of medical technology, and particularly to a fixing device for pediatric surgical operations. Background Art

[0002] Pediatric surgery is an emerging clinical discipline, mainly studying pediatric diseases that require surgical treatment. Generally, it is divided into professional departments such as neonatal surgery, pediatric general surgery, pediatric thoracic and cardiac surgery, pediatric urology, pediatric neurosurgery, pediatric otolaryngology - head and neck surgery, pediatric orthopedics, etc.

[0003] When performing operations on younger patients, the patients are likely to move around easily, which affects the doctor's operation. For example, a pediatric surgical operation position fixing device disclosed in the publication number CN110420104B can fix the upper body of pediatric patients, and at the same time avoid the surgical position during fixation, and can also raise the legs of pediatric patients to facilitate the doctor's operation on the legs of pediatric patients.

[0004] However, this device requires multiple operations when restricting and supporting pediatric patients, resulting in the overall use of the device not being convenient enough.

[0005] Therefore, we propose a fixing device for pediatric surgical operations to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a fixing device for pediatric surgical operations. In the initial state, the L-shaped pressing plate is at the highest point, so as to facilitate the pediatric patient to lie on the operating table before the operation. The L-shaped pressing plate is driven by the positioning mechanism one to move downward to the lowest point, so that the L-shaped pressing plate is close to the pediatric patient. Then, the L-shaped pressing plate is driven by the positioning mechanism two to move horizontally to a preset position, so that the L-shaped pressing plate avoids the position where the operation is about to be performed. Finally, an external air pump is used to inflate the airbag, so that the airbag restricts the pediatric patient and prevents it from moving around. When the pediatric patient lies on the operating table, the legs of the pediatric patient are placed on the first bearing plate and the second bearing plate. By setting the adjusting mechanism, it is convenient to drive the movable block to move horizontally, thereby changing the folding angle between the first bearing plate and the second bearing plate. The moving directions of the two movable blocks are opposite, which can bend one leg of the pediatric patient to be operated and flatten the other leg to facilitate the doctor's operation. Moreover, the vertical movement and horizontal movement of the L-shaped pressing plate in the present invention, as well as the angle adjustment of the two pairs of the first bearing plate and the second bearing plate, can all be controlled by a driving shaft, thereby effectively improving the overall convenience of the device and solving the problem that this device requires multiple operations when restricting pediatric patients, resulting in the overall use of the device not being convenient enough.

[0007] To achieve the above object, the present invention provides the following technical solution: A pediatric surgical fixation device includes an operating table and an L-shaped pressing plate located above the operating table. Four support legs are symmetrically distributed in pairs and fixedly connected to the lower surface of the operating table. An airbag is installed on the L-shaped pressing plate. A positioning mechanism one for driving the L-shaped pressing plate to move vertically and a positioning mechanism two for driving the L-shaped pressing plate to move horizontally are provided below the operating table.

[0008] Preferably, the positioning mechanism one includes two T-shaped mounting seats fixedly installed on the lower surface of the operating table and symmetrically distributed. A first hollow circular shaft is rotatably connected to one of the T-shaped mounting seats. An incomplete gear is sleeved on the surface of the first hollow circular shaft. A spline shaft one that completely penetrates the first hollow circular shaft is provided on the T-shaped mounting seat. A spline shaft two is rotatably connected between the two T-shaped mounting seats. A complete gear one that intermittently meshes with the incomplete gear is sleeved on the surface of the spline shaft two.

[0009] Preferably, the positioning mechanism one further includes a U-shaped bracket located between the two T-shaped mounting seats. A second hollow shaft penetrated by the spline shaft two is rotatably connected to the U-shaped bracket. A worm is sleeved on the surface of the second hollow shaft. Strip-shaped plates are integrally fixed to both the upper surface and the lower surface of the U-shaped bracket. A worm gear that meshes with the worm is rotatably connected between the two strip-shaped plates.

[0010] Preferably, a first threaded rod coaxially fixed with the worm gear is provided below the U-shaped bracket. A first internal threaded sleeve threadedly connected to the first threaded rod is sleeved on the surface of the first threaded rod. A long rod passing through the first internal threaded sleeve is fixedly connected to the surface of one of the strip-shaped plates. An L-shaped connecting plate is fixedly connected between the first internal threaded sleeve and the L-shaped pressing plate.

[0011] Preferably, the positioning mechanism two includes a complete gear two rotatably connected between the two T-shaped mounting seats and intermittently meshing with the incomplete gear, and a second threaded rod coaxially fixed with the complete gear two. A second internal threaded sleeve threadedly connected to the second threaded rod is sleeved on the second threaded rod. A cross bar passing through the second internal threaded sleeve is vertically fixed to one of the T-shaped mounting seats. A bending plate is fixedly connected between the second internal threaded sleeve and the U-shaped bracket.

[0012] Preferably, two symmetrically distributed rectangular grooves are formed on the operating table. A first bearing plate is rotatably connected in each of the two rectangular grooves. The free end of the first bearing plate is rotatably connected to a second bearing plate. An active block is slidably connected in each of the two rectangular grooves, and the free end of the second bearing plate is rotatably connected to the active block. An adjusting mechanism for driving the active block to move horizontally to change the folding angle between the first bearing plate and the second bearing plate is provided below the operating table.

[0013] Preferably, the adjusting mechanism includes an annular rack sleeved on one end of the spline shaft. A vertical plate is fixedly attached to the lower surface of the operating table. A complete gear three and a first bevel gear are rotatably connected to the vertical plate coaxially. A rectangular seat is fixedly connected to the lower surface of the operating table. A second bevel gear meshing with the first bevel gear and a third threaded rod coaxially fixed to the second bevel gear are rotatably connected to the rectangular seat. A third internal thread sleeve sleeved on the third threaded rod and threadedly connected to the third threaded rod is fixedly connected to one of the movable blocks.

[0014] Preferably, the adjusting mechanism further includes a complete gear four rotatably connected to the lower surface of the operating table. Rectangular racks meshing with the complete gear four are fixedly connected to both of the movable blocks, and the two rectangular racks are parallel to each other and located on opposite sides of the complete gear four.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. In the initial state, the L-shaped pressing plate is at the highest point to facilitate the lying of pediatric patients on the operating table before surgery. The L-shaped pressing plate is driven by the positioning mechanism one to move downward to the lowest point, so that the L-shaped pressing plate is close to the pediatric patient.

[0016] 2. After the L-shaped pressing plate moves downward to the lowest point, the L-shaped pressing plate is driven by the positioning mechanism two to move horizontally to a preset position, so that the L-shaped pressing plate avoids the position where the surgery is about to be performed. Finally, an external air pump is used to inflate the airbag, so that the airbag restricts the pediatric patient to prevent it from moving randomly.

[0017] 3. When the pediatric patient lies on the operating table, the legs of the pediatric patient are placed on the first bearing plate and the second bearing plate. By setting the adjusting mechanism, it is convenient to drive the movable block to move horizontally, so as to change the folding angle between the first bearing plate and the second bearing plate. The moving directions of the two movable blocks are opposite, and one leg of the pediatric patient to be operated can be bent, and the other leg can be laid flat, which is convenient for the doctor to operate.

[0018] 4. In the present invention, the vertical movement and horizontal movement of the L-shaped pressing plate, as well as the angle adjustment of the two pairs of first bearing plates and second bearing plates, can all be controlled by a driving shaft, thereby effectively improving the overall convenience of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is the overall three-dimensional structure schematic diagram of the present invention; Figure 2 is the structural schematic diagram under the operating table of the present invention; Figure 3 is the present invention Figure 2 the enlarged structural schematic diagram at A in; Figure 4Schematic diagram of the positioning mechanism 1 in the present invention; Figure 5 Schematic diagram of the positioning mechanism 2 in the present invention; Figure 6 Schematic diagram of the position of the U-shaped bracket in the present invention Figure 7 Schematic diagram of the adjusting mechanism in the present invention; Figure 8 Schematic diagram of the position of the annular rack in the present invention.

[0020] In the figure: 1, operating table; 2, L-shaped pressing plate; 3, airbag; 4, positioning mechanism 1; 41, T-shaped mounting seat; 42, first hollow circular shaft; 43, incomplete gear; 44, spline shaft 1; 45, spline shaft 2; 46, complete gear 1; 47, U-shaped bracket; 48, second hollow shaft; 49, worm; 410, strip plate; 411, worm gear; 412, first threaded rod; 413, first internal thread sleeve; 414, long rod; 415, L-shaped connecting plate; 5, positioning mechanism 2; 51, complete gear 2; 52, second threaded rod; 53, second internal thread sleeve; 54, cross bar; 55, bent plate; 61, rectangular groove; 62, bearing plate 1; 63, bearing plate 2; 64, movable block; 7, adjusting mechanism; 71, annular rack; 72, vertical plate; 73, complete gear 3; 74, first bevel gear; 75, rectangular seat; 76, second bevel gear; 77, third threaded rod; 78, third internal thread sleeve; 79, complete gear 4; 710, rectangular rack. Specific embodiments

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0022] Embodiment 1; Please refer to Figures 1 - 4 , the present invention provides a technical solution: A pediatric surgical fixation device includes an operating table 1 and an L-shaped pressing plate 2 located above the operating table 1. Four symmetrically distributed support legs are fixedly connected to the lower surface of the operating table 1. An airbag 3 is installed on the L-shaped pressing plate 2. A positioning mechanism 1 4 for driving the L-shaped pressing plate 2 to move in the vertical direction is provided below the operating table 1.

[0023] In the initial state, the L-shaped pressing plate 2 is at the highest point to facilitate the pediatric patient to lie on the operating table 1 before the operation. The positioning mechanism 1 4 drives the L-shaped pressing plate 2 to move downward to the lowest point, so that the L-shaped pressing plate 2 is close to the pediatric patient.

[0024] The positioning mechanism 4 includes two T-shaped mounting seats 41 that are fixed to the lower surface of the operating table 1 and symmetrically distributed. A first hollow circular shaft 42 is rotatably connected to one of the T-shaped mounting seats 41. A non-complete gear 43 is sleeved on the surface of the first hollow circular shaft 42. A spline shaft one 44 that completely penetrates the first hollow circular shaft 42 is provided on the T-shaped mounting seat 41. A spline shaft two 45 is rotatably connected between the two T-shaped mounting seats 41. A complete gear one 46 that intermittently meshes with the non-complete gear 43 is sleeved on the surface of the spline shaft two 45.

[0025] Manually rotate the spline shaft one 44 so that the spline shaft one 44 can drive the first hollow circular shaft 42 sleeved on its surface to rotate accordingly. The first hollow circular shaft 42 can drive the non-complete gear 43 sleeved on its surface to rotate accordingly, so that the non-complete gear 43 gradually meshes with the complete gear one 46 and drives the complete gear one 46 to rotate accordingly. The complete gear one 46 can drive the spline shaft two 45 to rotate accordingly.

[0026] The positioning mechanism 4 further includes a U-shaped bracket 47 located between the two T-shaped mounting seats 41. A second hollow shaft 48 penetrated by the spline shaft two 45 is rotatably connected to the U-shaped bracket 47. A worm 49 is sleeved on the surface of the second hollow shaft 48. Strip-shaped plates 410 are integrally fixed to both the upper surface and the lower surface of the U-shaped bracket 47. A worm gear 411 that meshes with the worm 49 is rotatably connected between the two strip-shaped plates 410.

[0027] A first threaded rod 412 coaxially fixed with the worm gear 411 is provided below the U-shaped bracket 47. A first internal threaded sleeve 413 that is threadedly connected to the first threaded rod 412 is sleeved on the surface of the first threaded rod 412. A long rod 414 that penetrates the first internal threaded sleeve 413 is fixedly connected to the surface of one of the strip-shaped plates 410. An L-shaped connecting plate 415 is fixedly connected between the first internal threaded sleeve 413 and the L-shaped pressing plate 2.

[0028] When the spline shaft two 45 rotates, it can drive the second hollow shaft 48 to rotate accordingly. The second hollow shaft 48 can drive the worm 49 sleeved on its surface to rotate accordingly. The worm 49 can drive the worm gear 411 meshing with it to rotate accordingly. The worm gear 411 can drive the first threaded rod 412 coaxially fixed with it to rotate accordingly. The first threaded rod 412 can drive the first internal threaded sleeve 413 to move downward. The first internal threaded sleeve 413 can drive the L-shaped pressing plate 2 to move downward to the lowest point through the L-shaped connecting plate 415.

[0029] Embodiment 2; Please refer to Figures 1 - 6 , this embodiment further illustrates Embodiment 1. A positioning mechanism 5 for driving the L-shaped pressing plate 2 to move horizontally is provided below the operating table 1.

[0030] After the L-shaped pressing plate 2 moves downward to the lowest point, the positioning mechanism II 5 is used to drive the L-shaped pressing plate 2 to move horizontally to a preset position, so that the L-shaped pressing plate 2 avoids the position where the operation is about to be performed. Finally, an external air pump is used to inflate the airbag 3, so that the airbag 3 restricts the pediatric patient to prevent him from moving around.

[0031] The positioning mechanism II 5 includes a complete gear II 51 rotatably connected between two T-shaped mounting seats 41 and intermittently meshing with the incomplete gear 43, and a second threaded rod 52 coaxially fixed with the complete gear II 51. A second internal threaded sleeve 53 threadedly connected to the second threaded rod 52 is sleeved on the second threaded rod 52. A cross bar 54 passing through the second internal threaded sleeve 53 is vertically fixed on one of the T-shaped mounting seats 41. A bending plate 55 is fixedly connected between the second internal threaded sleeve 53 and the U-shaped bracket 47.

[0032] When the incomplete gear 43 gradually disengages from the complete gear I 46 during rotation and gradually meshes with the complete gear II 51 to drive the complete gear II 51 to rotate, the complete gear II 51 can drive the second threaded rod 52 coaxially fixed with it to rotate accordingly. The second threaded rod 52 can drive the second internal threaded sleeve 53 to move horizontally. The second internal threaded sleeve 53 can drive the U-shaped bracket 47 to move horizontally through the bending plate 55. The U-shaped bracket 47 can drive the strip plate 410 fixed on its surface to move accordingly. The strip plate 410 can drive the worm gear 411, the first threaded rod 412, the first internal threaded sleeve 413 and the long rod 414 to move accordingly. The first internal threaded sleeve 413 can drive the L-shaped pressing plate 2 to move horizontally to a preset position through the L-shaped connecting plate 415, so that the L-shaped pressing plate 2 avoids the operation position.

[0033] When the U-shaped bracket 47 moves horizontally, it can drive the second hollow shaft 48 to move along the spline shaft II 45. The second hollow shaft 48 can drive the worm 49 sleeved on its surface to move accordingly, so that the worm 49 and the worm gear 411 can always be in a meshing state.

[0034] Embodiment III; Please refer to Figures 7 - 8 , this embodiment further describes Embodiment II. Two symmetrically distributed rectangular grooves 61 are opened on the operating bed 1. A first bearing plate 62 is rotatably connected in each of the two rectangular grooves 61. The free end of the first bearing plate 62 is rotatably connected to a second bearing plate 63. An active block 64 is slidably connected in each of the two rectangular grooves 61, and the free end of the second bearing plate 63 is rotatably connected to the active block 64. An adjusting mechanism 7 for driving the active block 64 to move horizontally to change the folding angle between the first bearing plate 62 and the second bearing plate 63 is arranged below the operating bed 1.

[0035] When the pediatric patient lies on the operating table 1, place the legs of the pediatric patient on the first bearing plate 62 and the second bearing plate 63.

[0036] By setting the adjusting mechanism 7, it is convenient to drive the movable block 64 to move along the horizontal direction, so as to change the folding angle between the first bearing plate 62 and the second bearing plate 63. The moving directions of the two movable blocks 64 are opposite, and one leg of the pediatric patient to be operated can be bent, and the other leg can be laid flat, which is convenient for the doctor to operate.

[0037] The adjusting mechanism 7 includes an annular rack 71 sleeved on one end of the first spline shaft 44. A vertical plate 72 is fixedly connected to the lower surface of the operating table 1. A third complete gear 73 and a first bevel gear 74 which are coaxially fixed are rotatably connected to the vertical plate 72. A rectangular seat 75 is fixedly connected to the lower surface of the operating table 1. A second bevel gear 76 meshing with the first bevel gear 74 and a third threaded rod 77 coaxially fixed with the second bevel gear 76 are rotatably connected to the rectangular seat 75. A third internal thread sleeve 78 sleeved on the third threaded rod 77 and threadedly connected to the third threaded rod 77 is fixedly connected to one of the movable blocks 64.

[0038] In the initial state, the angle between one of the first bearing plate 62 and the second bearing plate 63 is smaller, and the angle between the other first bearing plate 62 and the second bearing plate 63 is larger; Pull the first spline shaft 44 in the direction indicated by the arrow D. The first spline shaft 44 can drive the annular rack 71 sleeved on one end of it to move to the side of the arrow D accordingly, so that the annular rack 71 gradually meshes with the third complete gear 73 and drives the third complete gear 73 to rotate. The third complete gear 73 can drive the first bevel gear 74 coaxially fixed with it to rotate accordingly. The first bevel gear 74 can drive the second bevel gear 76 meshing with it to rotate accordingly. The second bevel gear 76 can drive the third threaded rod 77 coaxially fixed with it to rotate accordingly. The third threaded rod 77 can drive the third internal thread sleeve 78 to move to the side of the arrow D accordingly. The third internal thread sleeve 78 can drive one of the movable blocks 64 fixedly connected to it to move to the side of the arrow D accordingly, so that the angle between the first bearing plate 62 and the second bearing plate 63 becomes smaller and the leg of the pediatric patient is bent.

[0039] The adjusting mechanism 7 further includes a fourth complete gear 79 rotatably connected to the lower surface of the operating table 1. Rectangular racks 710 meshing with the fourth complete gear 79 are fixedly connected to both of the movable blocks 64, and the two rectangular racks 710 are parallel to each other and located on opposite sides of the fourth complete gear 79.

[0040] When one of the movable blocks 64 moves in the direction of arrow D, it can drive a rectangular rack 710 fixed on its surface to move in the direction of arrow D. The rectangular rack 710 can drive the complete gear four 79 meshing with it to rotate. The complete gear four 79 can drive another rectangular rack 710 to move in the opposite direction of arrow D. The rectangular rack 710 can drive another movable block 64 fixedly connected to it to move in the opposite direction of arrow D, reducing the angle between the second bearing plate 63 and the first bearing plate 62.

[0041] In the present invention, the vertical and horizontal movements of the L-shaped pressing plate 2 and the angle adjustment of the two pairs of the first bearing plates 62 and the second bearing plates 63 can all be controlled by a driving shaft, effectively improving the overall convenience of the device.

[0042] Working principle: In the initial state, the L-shaped pressing plate 2 is at the highest point to facilitate the pediatric patient to lie on the operating table 1 before the operation, and the legs of the pediatric patient are placed on the first bearing plate 62 and the second bearing plate 63. Manually rotate the first spline shaft 44 so that the first spline shaft 44 can drive the first hollow circular shaft 42 sleeved on its surface to rotate. The first hollow circular shaft 42 can drive the incomplete gear 43 sleeved on its surface to rotate, so that the incomplete gear 43 gradually meshes with the first complete gear 46 and drives the first complete gear 46 to rotate. The first complete gear 46 can drive the second spline shaft 45 to rotate. When the second spline shaft 45 rotates, it can drive the second hollow shaft 48 to rotate. The second hollow shaft 48 can drive the worm 49 sleeved on its surface to rotate. The worm 49 can drive the worm gear 411 meshing with it to rotate. The worm gear 411 can drive the first threaded rod 412 coaxially fixed to it to rotate. The first threaded rod 412 can drive the first internal thread sleeve 413 to move downward. The first internal thread sleeve 413 can drive the L-shaped pressing plate 2 to move downward to the lowest point through the L-shaped connecting plate 415, making the L-shaped pressing plate 2 close to the pediatric patient. When the incomplete gear 43 gradually disengages from the complete gear one 46 during rotation and gradually meshes with the complete gear two 51 to drive the complete gear two 51 to rotate, the complete gear two 51 can drive the second threaded rod 52 fixed coaxially with it to rotate accordingly. The second threaded rod 52 can drive the second internal thread sleeve 53 to move horizontally. The second internal thread sleeve 53 can drive the U-shaped bracket 47 to move horizontally through the bending plate 55. The U-shaped bracket 47 can drive the strip plate 410 fixed on its surface to move accordingly. The strip plate 410 can drive the worm gear 411, the first threaded rod 412, the first internal thread sleeve 413 and the long rod 414 to move accordingly. The first internal thread sleeve 413 can drive the L-shaped pressing plate 2 to move horizontally to a preset position through the L-shaped connecting plate 415, so that the L-shaped pressing plate 2 avoids the position where the operation is about to be performed. Finally, an external air pump is used to inflate the airbag 3, so that the airbag 3 restricts the pediatric patient to prevent them from moving around randomly; In the initial state, the angle between one of the bearing plates one 62 and the bearing plate two 63 is smaller, and the angle between the other bearing plate one 62 and the bearing plate two 63 is larger; Pull the spline shaft one 44 in the direction indicated by the arrow D. The spline shaft one 44 can drive the annular rack 71 sleeved at one end of it to move to the side of the arrow D accordingly, so that the annular rack 71 gradually meshes with the complete gear three 73 and drives the complete gear three 73 to rotate. The complete gear three 73 can drive the first bevel gear 74 fixed coaxially with it to rotate accordingly. The first bevel gear 74 can drive the second bevel gear 76 meshing with it to rotate accordingly. The second bevel gear 76 can drive the third threaded rod 77 fixed coaxially with it to rotate. The third threaded rod 77 can drive the third internal thread sleeve 78 to move to the side of the arrow D accordingly. The third internal thread sleeve 78 can drive one of the movable blocks 64 fixedly connected to it to move to the side of the arrow D, so that the angle between the bearing plate one 62 and the bearing plate two 63 becomes smaller and the legs of the pediatric patient are bent; When one of the movable blocks 64 moves in the direction indicated by the arrow D, it can drive a rectangular rack 710 fixed on its surface to move in the direction indicated by the arrow D accordingly. The rectangular rack 710 can drive the complete gear four 79 meshing with it to rotate. The complete gear four 79 can drive the other rectangular rack 710 to move in the opposite direction of the arrow D. The rectangular rack 710 can drive the other movable block 64 fixedly connected to it to move in the opposite direction of the arrow D, so that the angle between the bearing plate two 63 and the bearing plate one 62 becomes smaller.

[0043] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pediatric surgical fixation device, comprising an operating table (1), and an L-shaped pressing plate (2) located above the operating table (1), wherein the lower surface of the operating table (1) is fixedly connected to four supporting legs symmetrically distributed in pairs, and characterized in that: An air bag (3) is installed on the L-shaped pressure plate (2); a positioning mechanism (4) for driving the L-shaped pressure plate (2) to move in a vertical direction and a positioning mechanism (5) for driving the L-shaped pressure plate (2) to move in a horizontal direction are arranged below the operating bed (1); the positioning mechanism (4) comprises two T-shaped mounting seats (41) fixed to the lower surface of the operating bed (1) and symmetrically distributed; a first hollow circular shaft (42) is rotatably connected to one of the T-shaped mounting seats (41); a non-complete gear (43) is sleeved on the surface of the first hollow circular shaft (42); a spline shaft (44) that completely penetrates the first hollow circular shaft (42) is arranged on the T-shaped mounting seat (41); a spline shaft (45) is rotatably connected between the two T-shaped mounting seats (41); a complete gear (46) that intermittently meshes with the non-complete gear (43) is sleeved on the surface of the spline shaft (45).

2. A pediatric surgical fixation device according to claim 1, characterized in that: The first positioning mechanism (4) further comprises a U-shaped bracket (47) located between the two T-shaped mounting seats (41); a second hollow shaft (48) penetrated by the second spline shaft (45) is rotatably connected to the U-shaped bracket (47); a worm (49) is sleeved on the surface of the second hollow shaft (48); strip plates (410) are integrally fixed to the upper and lower surfaces of the U-shaped bracket (47); a worm wheel (411) meshing with the worm wheel (49) is rotatably connected between the two strip plates (410); a first threaded rod (412) coaxially fixed to the worm wheel (411) is provided below the U-shaped bracket (47); a first internally threaded sleeve (413) threadedly connected to the first threaded rod (412) is sleeved on the surface of the first threaded rod (412); one of the strip plates (410) has a first internally threaded sleeve (413) threadedly connected to the first threaded rod (412); and a first internally threaded sleeve (413) is sleeved on the surface of the first threaded rod (412); and a first internally threaded sleeve (413) threadedly connected to the first threaded rod (412 ... A long rod (414) passing through a first internally threaded sleeve (413) is fixedly connected to the surface, and an L-shaped connecting plate (415) is fixedly connected between the first internally threaded sleeve (413) and the L-shaped pressing plate (2); the second positioning mechanism (5) comprises a second complete gear (51) rotatably connected between two T-shaped mounting seats (41) and intermittently meshing with the incomplete gear (43), and a second threaded rod (52) coaxially fixed to the second complete gear (51), the second threaded rod (52) being sleeved with a second internally threaded sleeve (53) threadedly connected thereto, a crossbar (54) passing through the second internally threaded sleeve (53) being vertically fixed to one of the T-shaped mounting seats (41), and a bending plate (55) being fixedly connected between the second internally threaded sleeve (53) and the U-shaped bracket (47).

3. A pediatric surgical fixation device according to claim 2, characterized in that: The operating bed (1) is provided with two symmetrically distributed rectangular grooves (61), a first carrier plate (62) is rotatably connected in the two rectangular grooves (61), a free end of the first carrier plate (62) is rotatably connected to a second carrier plate (63), a movable block (64) is slidably connected in the two rectangular grooves (61), and the free end of the second carrier plate (63) is rotatably connected to the movable block (64), and an adjustment mechanism (7) is provided below the operating bed (1) for driving the movable block (64) to move in a horizontal direction so as to change the folding angle between the first carrier plate (62) and the second carrier plate (63).

4. A pediatric surgical fixation device according to claim 3, characterized in that: The adjustment mechanism (7) comprises an annular rack (71) sleeved on one end of a spline shaft (44), and a vertical plate (72) is vertically fixed to the lower surface of the operating bed (1).

5. A pediatric surgical fixation device according to claim 4, characterized in that: The vertical plate (72) is rotatably connected to a coaxially fixed complete gear 3 (73) and a first bevel gear (74), and the lower surface of the operating bed (1) is fixedly connected to a rectangular seat (75).

6. A pediatric surgical fixation device according to claim 5, characterized in that: The rectangular seat (75) is rotatably connected to a second bevel gear (76) meshing with the first bevel gear (74), and a third threaded rod (77) coaxially fixed to the second bevel gear (76).

7. A pediatric surgical fixation device according to claim 6, characterized in that: A third internal thread sleeve (78) is fixedly connected to one of the movable blocks (64) and is sleeved on the third threaded rod (77) and threadedly connected to the third threaded rod (77).

8. A pediatric surgical fixation device according to claim 7, characterized in that: The adjustment mechanism (7) further comprises a complete gear four (79) rotatably connected to the lower surface of the operating bed (1), and the two movable blocks (64) are both fixedly connected with a rectangular rack (710) meshing with the complete gear four (79), and the two rectangular racks (710) are parallel to each other and located on opposite sides of the complete gear four (79).

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