Auxiliary device for maintaining reduction in child humerus supracondylar fracture operation

Abstract

The invention relates to the technical field of medical instruments, in particular to a child humerus supracondylar fracture intraoperative maintenance reduction auxiliary device which comprises a controller and a shell, an auxiliary plate is hinged to the top of the shell, arc-shaped plates are arranged on the shell and the auxiliary plate, air bags are detachably connected to the arc-shaped plates, a first communicating pipe is arranged on the upper portion of the shell, and a second communicating pipe is arranged on the lower portion of the shell. The two ends of the first communicating pipe detachably communicate with the interiors of the adjacent air bags correspondingly. A driving part is fixedly connected to the inner bottom wall of the shell, a driving gear is fixedly connected to an output shaft of the driving part, a first rack and a second rack are symmetrically meshed with the two sides of the driving gear, and an inflation assembly is arranged at the end, away from the driving gear, of the first rack. The air bag close to the shell further detachably communicates with a second communicating pipe, and the second communicating pipe penetrates through the top wall of the shell and extends into the shell to be provided with an angle adjusting assembly. The angle of the auxiliary plate is adjusted through the angle adjusting assembly, the tedious operation that a traditional mechanical screw needs to be loosened and tightened repeatedly is optimized, and therefore the operation time is shortened.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to an auxiliary device for maintaining reduction during surgery for supracondylar fractures of the humerus in children. Background Technology

[0002] The intraoperative reduction maintenance device for supracondylar fractures of the humerus in children is a reduction and fixation device composed of clamps, connecting rods, steering fixation components, and aiming components. It can achieve traction, temporary fixation, and precise placement of Kirschner wires during closed reduction of fracture. Through mechanical structure or mechanical principles, it assists doctors in maintaining the fracture reduction state, thereby improving surgical accuracy and reducing the risk of complications.

[0003] Existing technologies, such as the pediatric supracondylar fracture reduction device for humeral fractures, consist of a frame, a support pad, and a pressure pad. The length and flexion-extension-rotation angles of the frame are adjustable. During operation, the main support is first fixed by the operating table hooks. Then, the upper arm fixation plate and the forearm fixation plate are adjusted to the appropriate positions via the movable connecting plate, the rotating shaft, the slide rail, and the screw rod, respectively, to complete the initial fixation of the upper and lower ends of the bone. During the operation, the flexion-extension angles of the forearm and upper arm are adjusted using the slide rail and the screw rod to maintain the patient's elbow joint at its maximum possible flexion. Finally, under C-arm fluoroscopy guidance, the accuracy of reduction is ensured by adjusting the distance between the movable support and the baffle.

[0004] While the aforementioned device can assist the patient's limbs, it requires frequent adjustments to the spacing between the movable support and the baffle to ensure accurate bone repositioning, thus prolonging the operation time.

[0005] In summary, the existing devices require frequent adjustments to the spacing between the movable support and the baffle to ensure accurate bone reduction in patients, which prolongs the operation time and has become a problem that urgently needs to be solved in this field. Therefore, it is necessary to propose an intraoperative reduction maintenance assist device for supracondylar fractures of the humerus in children. Summary of the Invention

[0006] To address the aforementioned issues, this invention provides an auxiliary device for maintaining reduction during surgery for supracondylar fractures of the humerus in children. By adjusting the angle of the auxiliary plate through an angle adjustment component, the cumbersome operation of repeatedly tightening and loosening the traditional mechanical screw adjustment is optimized, thereby shortening the operation time.

[0007] To achieve the above objectives, the technical solution of the present invention is as follows: an auxiliary device for maintaining reduction during surgery for supracondylar fracture of the humerus in children, comprising a controller and a housing, an auxiliary plate hinged to the top of the housing, an arc-shaped plate detachably connected to the top of the housing and one side of the auxiliary plate, an airbag detachably connected to the arc-shaped plate, and a first connecting tube provided above the housing, the two ends of the first connecting tube being detachably connected to the interior of the adjacent airbag respectively.

[0008] A drive unit is fixedly connected to the bottom wall of the outer shell. The controller is used to control the rotation of the output shaft of the drive unit. A drive gear is fixedly connected to the output shaft of the drive unit. A first rack and a second rack are symmetrically meshed on both sides of the drive gear. An inflation component for inflating the airbag is provided at the end of the first rack away from the drive gear.

[0009] A second connecting pipe can be detachably connected to the airbag near the outer shell. The second connecting pipe extends through the top wall of the outer shell and into the interior of the outer shell, where an angle adjustment component is provided for pneumatically adjusting the angle of the auxiliary plate.

[0010] The technical principles of the above solution are as follows:

[0011] Medical staff select an arc-shaped plate of the appropriate size according to the patient's limb size and install the airbag on the arc-shaped plate. The arc-shaped plate is then installed on the top of the outer shell and one side of the auxiliary plate to fix the patient's limb. Subsequently, the medical staff control the output shaft of the drive component to rotate via the controller. The output shaft of the drive component drives the drive gear to rotate, which in turn drives the first rack and the second rack to reciprocate laterally. The first rack drives the inflation component to operate, causing the airbag to inflate and further clamp and fix the patient's limb.

[0012] During this process, after the airbag is fully inflated, gas enters the angle adjustment component. At this time, the angle adjustment component operates under the flow of gas to achieve the angle adjustment operation of the auxiliary plate.

[0013] The above approach has the following beneficial effects:

[0014] 1. This invention optimizes the cumbersome operation of traditional mechanical screw adjustment, which requires repeated tightening and loosening, by adjusting the angle of the auxiliary plate through an angle adjustment component, thereby shortening the operation time.

[0015] 2. This invention inflates the airbag using an inflation component, achieving stepless and precise pressure adjustment. After inflation, the airbag can evenly wrap around the patient's limbs while maintaining coronal, sagittal, and rotational stability, reducing the problem of traditional devices that can only control displacement in a single plane.

[0016] 3. The detachable design of the arc-shaped plate in this invention allows for the replacement of arc-shaped plates of different sizes according to the size of the patient's limb, thereby making the device more adaptable to different patients. Furthermore, its synergistic effect with the airbag and inflation assembly further enhances the fit to the patient's limb.

[0017] Furthermore, the inflation assembly includes an inflation box fixedly connected to the bottom wall of the outer shell, an inflation plate slidably fitted to the inner side wall of the inflation box, and a first rack extending through the side wall of the inflation box into the inflation box and fixedly connected to the inflation plate.

[0018] The inflation box is connected to a first inlet check valve and a first outlet check valve. The flow direction of the first inlet check valve is one-way from the outside of the inflation box to the inside of the inflation box, and the flow direction of the first outlet check valve is one-way from the inside of the inflation box to the outside of the inflation box. The inflation box is also connected to an air supply pipe. One end of the air supply pipe is connected to the first outlet check valve, and the other end of the air supply pipe passes through the top wall of the outer shell and the auxiliary plate and is detachably connected to the adjacent airbag.

[0019] Beneficial effects: The displacement of the inflatable plate is linearly related to the pressure inside the inflatable box. The controller can precisely control the amount of gas entering the airbag per unit time by adjusting the speed of the drive gear, thereby achieving stepless pressure adjustment. Moreover, the transmission ratio of the gear and rack transmission structure is large, and it can continuously deliver air into the airbag during reciprocating motion, thereby improving the continuous inflation capability of the device.

[0020] Furthermore, the angle adjustment assembly includes an adjustment box fixedly connected to the bottom wall of the outer casing, a second connecting pipe communicating with the inside of the adjustment box, an adjustment plate slidably fitted inside the adjustment box, an adjustment rack symmetrically fixedly connected to one side of the adjustment plate, and several springs fixedly connected to the other side of the adjustment plate. The ends of the springs away from the adjustment plate are all fixedly connected to the inner side wall of the adjustment box. Adjustment rods are symmetrically rotatably fitted on the inner side wall of the outer casing, and the ends of the adjustment rods away from the adjustment gears are all fixedly connected to an auxiliary plate. Adjustment gears are fixedly connected to each adjustment rod, and the adjustment racks mesh with their adjacent adjustment gears.

[0021] Beneficial effects: When the airbag pressure changes suddenly, the air pressure inside the regulating box will change rapidly, which will increase the movement speed of the regulating plate. At this time, the elastic resistance of the spring will increase, which can dynamically buffer the movement of the regulating plate, thereby forming a dynamic balance between air pressure and spring force, reducing the occurrence of soft tissue damage to the patient due to sudden changes in the angle of the auxiliary plate.

[0022] Furthermore, it also includes a cooling component for cooling the patient's limbs. The cooling component includes a cooling box fixedly connected to the bottom wall of the outer shell, a cooling plate that slides laterally inside the cooling box, and the end of the second rack away from the drive gear that is fixedly connected to the cooling plate.

[0023] The cooling chamber is connected to a second inlet check valve and a second outlet check valve. The flow direction of the second inlet check valve is one-way from the outside of the cooling chamber to the inside of the cooling chamber, and the flow direction of the second outlet check valve is one-way from the inside of the cooling chamber to the outside of the cooling chamber. An air supply channel is opened on the top wall of the outer shell, and the air supply channel is connected to the second outlet check valve.

[0024] Beneficial effects: When the rotational speed of the drive gear changes, the wind speed through the air delivery channel also changes accordingly, thereby enabling wind speed control and meeting the cooling needs of the patient's limbs.

[0025] Furthermore, it also includes a limiting component for limiting the adjustment rack. The limiting component includes a limiting frame symmetrically fixedly connected to the two inner side walls of the housing. The adjustment rack is located in the adjacent limiting frame and slides laterally with the limiting frame.

[0026] Beneficial effect: When the adjusting rack moves laterally and reciprocates, the limiting frame can limit the movement path of the adjusting rack, thereby improving the movement stability of the adjusting rack.

[0027] Furthermore, it also includes an auxiliary component for assisting in the insertion of Kirschner wires, the auxiliary component including a fixing plate detachably connected to the auxiliary plate, both the auxiliary plate and the fixing plate having insertion holes.

[0028] Beneficial effects: The design of the insertion hole provides guidance for the insertion of Kirschner wires, enabling medical staff to insert Kirschner wires stably into the patient's limbs and reducing human error caused by direct insertion.

[0029] Furthermore, the top of the outer shell has symmetrical through holes, and transparent baffles are fixedly connected to each through hole. An angle reference table is engraved on the top of each transparent baffle. The adjusting gears are located inside the through holes adjacent to them, and angle reference lines are engraved on each adjusting gear.

[0030] Beneficial effects: The transparent baffle design allows medical staff to observe the angle reference line on the adjustment gear through the transparent baffle, and to monitor the offset angle of the auxiliary plate in real time based on the angle reference table.

[0031] Furthermore, a handle is fixedly connected to one side of the outer casing.

[0032] Beneficial effects: When the device needs to be moved to another location, healthcare workers can easily move it using the handle, thereby improving the device's flexibility.

[0033] Furthermore, a storage box is also fixedly attached to the outer shell.

[0034] Beneficial effects: The design of the storage box provides storage space for components such as curved panels when not in use, reducing damage to components caused by separation.

[0035] Furthermore, a breathable mesh can be detachably attached to the top of the outer shell.

[0036] Beneficial effects: The breathable mesh design allows airflow to increase the contact area with the patient's limbs when it is released from inside the shell, thus achieving a better cooling effect.

[0037] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0038] Figure 1 This is an isometric schematic diagram of the device for maintaining reduction during surgery for supracondylar fracture of the humerus in children according to the present invention in Example 1.

[0039] Figure 2 This is an isometric view of the internal structure of the pediatric supracondylar fracture maintenance reduction aid device in Example 1.

[0040] Figure 3 This is a top-down sectional view of the adjustment box in the pediatric supracondylar fracture maintenance reduction auxiliary device of the present invention in Example 1.

[0041] Figure 4 This is a top-down sectional view of the air chamber and cooling chamber in the pediatric supracondylar fracture maintenance and reduction auxiliary device of the present invention in Example 1.

[0042] Figure 5 This is a top-down sectional view of the air chamber and cooling chamber in the pediatric supracondylar fracture maintenance and reduction auxiliary device of the present invention in Example 2.

[0043] Figure 6 This is a side-sectional schematic diagram of the airbag in the pediatric supracondylar fracture maintenance reduction aid device of the present invention in Example 3.

[0044] Figure 7 This is a top-down sectional view of the air supply channel in the intraoperative maintenance and reduction auxiliary device for supracondylar fracture of the humerus in children according to Example 1 of the present invention.

[0045] The reference numerals in the accompanying drawings of the instruction manual include: 1. Outer shell; 2. Storage box; 3. Auxiliary plate; 4. Arc-shaped plate; 5. Airbag; 6. First connecting pipe; 7. Stepper motor; 8. Drive gear; 9. First rack; 10. Second rack; 11. Inflation box; 12. Inflation plate; 13. First inlet one-way valve; 14. First outlet one-way valve; 15. Air supply pipe; 16. Second connecting pipe; 17. Adjustment box; 18. Adjustment plate; 19. Adjustment rack; 20. Adjustment rod; 21. Adjustment gear; 22. Cooling box; 23. Cooling plate; 24. Second inlet one-way valve; 25. Second outlet one-way valve; 26. Limiting frame; 27. Fixing plate; 28. Electric telescopic rod. Detailed Implementation

[0046] The following detailed description illustrates the specific implementation method:

[0047] Example 1:

[0048] As attached Figure 1As shown: A device for maintaining reduction during surgery for supracondylar fracture of the humerus in children includes a controller and a housing 1. The housing 1 has an integrally formed handle (15cm in length and 3cm in width) and a storage box 2 (20cm×15cm×10cm in size).

[0049] An auxiliary plate 3 is hinged to the top of the outer shell 1 (the auxiliary plate 3 can rotate within a range of 0-60°). An arc-shaped plate 4 is detachably connected to the top of the outer shell 1 and one side of the auxiliary plate 3 with screws. An airbag 5 is detachably glued to the arc-shaped plate 4. A first connecting pipe 6 is provided above the outer shell 1. Both ends of the first connecting pipe 6 are detachably connected to the interior of the adjacent airbag 5.

[0050] like Figure 2 As shown, a drive unit is fixedly connected to the bottom wall of the outer casing 1 by screws. The controller is used to control the rotation of the output shaft of the drive unit. A drive gear 8 is fixedly engaged on the output shaft of the drive unit. A first rack 9 and a second rack 10 are symmetrically meshed on both sides of the drive gear 8. An inflation component for inflating the airbag 5 is provided at the end of the first rack 9 away from the drive gear 8. In this embodiment, a stepper motor 7 is selected as the drive unit.

[0051] like Figure 4 As shown, the inflation assembly includes an inflation box 11 integrally formed on the inner bottom wall of the outer shell 1. An inflation plate 12 is laterally slidably fitted on the inner side wall of the inflation box 11. A first rack 9 extends through the side wall of the inflation box 11 and into the inflation box 11, integrally formed with the inflation plate 12.

[0052] The inflation box 11 is connected to a first inlet check valve 13 and a first outlet check valve 14. The flow direction of the first inlet check valve 13 is one-way from the outside of the inflation box 11 to the inside of the inflation box 11, and the flow direction of the first outlet check valve 14 is one-way from the inside of the inflation box 11 to the outside of the inflation box 11. The inflation box 11 is also connected to an air supply pipe 15. One end of the air supply pipe 15 is connected to the first outlet check valve 14, and the other end of the air supply pipe 15 passes through the top wall of the outer shell 1 and the auxiliary plate 3 and is detachably connected to the adjacent airbag 5.

[0053] Specifically, medical staff select the specific size of the arc plate 4 according to the size of the patient's forearm and upper arm, install it on the top of the outer shell 1 and one side of the auxiliary plate 3 respectively, and install the airbag 5 on the arc plate 4 to fix the patient's forearm and upper arm.

[0054] When medical staff use it, they control the output shaft of the stepper motor 7 to rotate back and forth through the controller, which drives the drive gear 8 to rotate back and forth. The drive gear 8 drives the first rack 9 and the second rack 10 to move laterally back and forth (in this embodiment, the moving speed of the first rack 9 and the second rack 10 is 2cm / s), and then the first rack 9 drives the inflation component to operate. Since the inflation plate 12 and the first rack 9 are integrally formed, the first rack 9 can drive the inflation plate 12 to move laterally back and forth in the inflation box 11 (the movement distance of the inflation plate 12 is 8cm), drawing the gas outside the inflation box 11 into the inflation box 11 through the first inlet one-way valve 13 (the gas extraction speed is 0.5L / s), and then releasing the gas inside the inflation box 11 into the air delivery pipe 15 through the first outlet one-way valve 14 (the exhaust speed is 0.5L / s), thereby allowing the gas to enter the air bladder 5 adjacent to the auxiliary plate 3. The expansion of the air bladder 5 further stabilizes and clamps the patient's forearm and upper arm (the diameter of the air bladder 5 can increase by 1-2cm after expansion).

[0055] A second connecting pipe 16 can also be detachably connected to the airbag 5 near the outer shell 1. The second connecting pipe 16 extends through the top wall of the outer shell 1 and into the interior of the outer shell 1, where an angle adjustment component is provided for pneumatically adjusting the angle of the auxiliary plate 3.

[0056] like Figure 2 and Figure 3 As shown, the angle adjustment assembly includes an adjustment box 17 integrally formed on the inner bottom wall of the outer shell 1. The second connecting pipe 16 is connected to the interior of the adjustment box 17. An adjustment plate 18 is slidably fitted inside the adjustment box 17. An adjustment rack 19 is integrally formed symmetrically on one side of the adjustment plate 18. Several springs (4 springs with an elastic coefficient of 50 N / m) are integrally formed on the other side of the adjustment plate 18. The ends of the springs away from the adjustment plate 18 are integrally formed with the inner side wall of the adjustment box 17. An adjustment rod 20 is symmetrically rotated on the inner side wall of the outer shell 1. The ends of the adjustment rods 20 away from the adjustment gears 21 are integrally formed with the auxiliary plate 3. An adjustment gear 21 is fixedly engaged on each adjustment rod 20. The adjustment racks 19 mesh with their adjacent adjustment gears 21.

[0057] The top of the outer casing 1 has symmetrical through holes, and a transparent baffle is embedded in each through hole. An angle reference table (not shown in the figure) is engraved on the top of each transparent baffle. The adjusting gears 21 are all located inside the through holes adjacent to them, and an angle reference line (not shown in the figure) is engraved on each adjusting gear 21.

[0058] Specifically, when gas enters the airbag 5 near the auxiliary plate 3, since both ends of the first connecting pipe 6 are connected to the adjacent airbag 5, the gas inside the airbag 5 adjacent to the auxiliary plate 3 can also enter the airbag 5 adjacent to the top of the outer shell 1 through the first connecting pipe 6, thereby causing the airbag 5 to expand simultaneously and further clamp the patient's forearm and upper arm.

[0059] Since the two ends of the second connecting pipe 16 are connected to the regulating box 17 and the adjacent airbag 5 respectively, the gas inside the airbag 5 adjacent to the outer shell 1 can also enter the regulating box 17 through the second connecting pipe 16, compressing the regulating plate 18 to move laterally. This causes the regulating plate 18 to drive the regulating rack 19, which is integrally formed with it, to move laterally. The regulating rack 19 then drives the adjacent regulating gears 21 to rotate (the rotation angle range of the regulating gears 21 is 0-60°). At this time, since the regulating rods 20 are all integrally formed with the auxiliary plate 3 and are fixedly engaged with the adjacent regulating gears 21, when the regulating gears 21 rotate, they can sequentially drive the regulating rods 20 and the auxiliary plate 3 to rotate, thereby realizing the angle adjustment of the auxiliary plate 3 (the rotation speed of the auxiliary plate 3 is 2° / s).

[0060] During this process, since the spring is located between the side wall of the regulating box 17 and the regulating plate 18, when the gas drives the regulating plate 18 to move laterally, the spring can be stretched by the regulating plate 18. When the gas escapes from the regulating box 17, the regulating plate 18 will move back to its initial position under the restoring force of the spring.

[0061] Since the angle reference line is located on the adjusting gear 21, and the transparent baffle located at the through hole is engraved with an angle reference table, when the adjusting gear 21 rotates, medical staff can monitor the rotation angle of the auxiliary plate 3 in real time through the angle reference line and the angle reference table.

[0062] like Figure 4 As shown, it also includes a cooling component for cooling the patient's limbs. The cooling component includes a cooling box 22 integrally formed on the bottom wall of the outer shell 1. A cooling plate 23 is slidably fitted inside the cooling box 22. The end of the second rack 10 away from the drive gear 8 is integrally formed with the cooling plate 23.

[0063] The cooling chamber 22 is connected to a second inlet check valve 24 and a second outlet check valve 25. The flow direction of the second inlet check valve 24 is unidirectional, from the outside of the cooling chamber 22 to the inside of the cooling chamber 22, and the flow direction of the second outlet check valve 25 is unidirectional, from the inside of the cooling chamber 22 to the outside of the cooling chamber 22. Figure 7As shown, an air supply channel penetrating the top wall of the outer casing 1 is provided, and the air supply channel is connected to the second one-way valve 25. A breathable mesh (not shown in the figure) is detachably glued to the top of the outer casing 1 (the breathable mesh has a pore size of 0.2 mm and an air permeability of 500 L / m). 2 ·s).

[0064] Specifically, when the second rack 10 reciprocates laterally, it drives the integrated cooling plate 23 to reciprocate laterally, thereby drawing gas outside the cooling chamber 22 into the cooling chamber 22 through the second inlet one-way valve 24, and then discharging the gas inside the cooling chamber 22 through the second outlet one-way valve 25. During this process, since the air supply channel is connected to the second outlet one-way valve 25, the gas discharged from the second outlet one-way valve 25 can enter the air supply channel and then be delivered to the bottom of the patient's limbs to reduce the stuffiness caused by the heat.

[0065] like Figure 3 As shown, it also includes a limiting component for limiting the adjustment rack 19. The limiting component includes a limiting frame 26 symmetrically integrally formed on the two inner side walls of the outer shell 1. The adjustment rack 19 is located in the adjacent limiting frame 26 and slides laterally with the limiting frame 26.

[0066] Specifically, when the adjusting rack 19 reciprocates laterally, it is located within the adjacent limiting frame 26 and slides laterally with the limiting frame 26. Therefore, the limiting frame 26 can limit the adjusting rack 19 to reduce its deviation during movement (the deviation is less than 0.1cm), thereby improving the movement stability of the adjusting rack 19.

[0067] It also includes an auxiliary component for assisting in the insertion of Kirschner wires. The auxiliary component includes a fixing plate 27 that is detachably connected to the auxiliary plate 3 by screws. Both the auxiliary plate 3 and the fixing plate 27 have insertion holes.

[0068] Specifically, when it is necessary to insert a Kirschner wire into a patient's limb, the medical staff will engage the fixation plate 27 with one side of the auxiliary plate 3, so that the insertion hole on the fixation plate 27 and the insertion hole on the auxiliary plate 3 are on the same straight line (the straightness error is less than 0.05mm). At this time, the medical staff can insert the Kirschner wire into the patient's limb under the guidance of the insertion hole.

[0069] In this embodiment, all non-electrical components in the device are made of carbon fiber, which has the characteristics of high strength, low density, corrosion resistance and good biocompatibility. In addition, carbon fiber has a low absorption rate of X-rays, so it also has the advantage of high fluoroscopic clarity, which allows medical staff to observe the patient's fracture reduction and brace position in real time.

[0070] This invention optimizes the cumbersome operation of traditional mechanical screw adjustment, which requires repeated tightening and loosening, by adjusting the angle of the auxiliary plate 3 using an angle adjustment component, thereby shortening the operation time. Simultaneously, this invention connects the inflation box 11, the air bag 5, and the adjustment box 17 in series via the first connecting pipe 6, the air supply pipe 15, and the second connecting pipe 16. This allows the air bag 5 to inflate and stably hold the patient's limb before adjusting the angle of the auxiliary plate 3, reducing the risk of fixation failure due to patient limb displacement during the adjustment process.

[0071] Example 2:

[0072] As attached Figure 5 As shown, the difference from Embodiment 1 is that the driving component in this embodiment is an electric telescopic rod 28, which is symmetrically screwed and fixed to the bottom wall of the outer casing 1. The output shaft of the electric telescopic rod 28 adjacent to the inflation plate 12 passes through the side wall of the inflation box 11 and is screwed and fixed to the inflation plate 12. The output shaft of the electric telescopic rod 28 adjacent to the cooling plate 23 passes through the side wall of the cooling box 22 and is screwed and fixed to the cooling plate 23. When the controller controls the output shaft of the electric telescopic rod 28 to reciprocate, it drives the inflation plate 12 and the cooling plate 23 to reciprocate laterally, realizing the inflation operation of the airbag 5 and the cooling operation of the patient's limb. The technical effect achieved is the same as that in Embodiment 1.

[0073] As long as the effect of synchronous movement of the inflation plate 12 and the cooling plate 23 on the inner sidewall of the inflation box 11 and the inner sidewall of the cooling box 22 can be achieved, the use of any driving component is within the scope of protection of the claims of this application.

[0074] Example 3:

[0075] As attached Figure 6 As shown, the difference from Embodiment 2 is that the airbag 5 in this embodiment adopts a direct-connection design instead of a tubular design, and its cross-sectional shape is as follows. Figure 6 As shown, when gas enters the airbag 5, the airbag 5 expands directly to further clamp the patient's limbs, achieving the same clamping effect as in Example 1.

[0076] As long as the effect of first inflating the airbag 5 to clamp the patient's limb, followed by angle adjustment of the auxiliary plate 3, is achieved, any fixing component used is within the scope of protection of the claims of this application. Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for maintaining reduction during surgery for supracondylar fracture of the humerus in children, comprising a housing (1), wherein an auxiliary plate (3) is hinged to the top of the housing (1), characterized in that, It also includes a controller, and an arc plate (4) can be detachably connected to the top of the outer shell (1) and one side of the auxiliary plate (3). An airbag (5) can be detachably connected to the arc plate (4). A first connecting pipe (6) is provided above the outer shell (1). The two ends of the first connecting pipe (6) are detachably connected to the interior of the adjacent airbag (5). A drive unit is fixedly connected to the bottom wall of the outer shell (1). The controller is used to control the rotation of the output shaft of the drive unit. A drive gear (8) is fixedly connected to the output shaft of the drive unit. A first rack (9) and a second rack (10) are symmetrically meshed on both sides of the drive gear (8). An inflation component for inflating the airbag (5) is provided at the end of the first rack (9) away from the drive gear (8). A second connecting pipe (16) can be detachably connected to the airbag (5) near the outer shell (1). The second connecting pipe (16) extends through the top wall of the outer shell (1) and into the interior of the outer shell (1) and is equipped with an angle adjustment component for pneumatically adjusting the angle of the auxiliary plate (3).

2. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 1, characterized in that, The inflation assembly includes an inflation box (11) fixedly connected to the bottom wall of the outer shell (1), an inflation plate (12) is slidably fitted on the inner side wall of the inflation box (11), and a first rack (9) extends through the side wall of the inflation box (11) and into the inflation box (11) and is fixedly connected to the inflation plate (12). The inflation box (11) is connected to a first inlet check valve (13) and a first outlet check valve (14). The first inlet check valve (13) flows from the outside of the inflation box (11) to the inside of the inflation box (11). The first outlet check valve (14) flows from the inside of the inflation box (11) to the outside of the inflation box (11). The inflation box (11) is also connected to an air supply pipe (15). One end of the air supply pipe (15) is connected to the first outlet check valve (14). The other end of the air supply pipe (15) passes through the top wall of the outer shell (1) and the auxiliary plate (3) and is detachably connected to the adjacent airbag (5).

3. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 2, characterized in that, The angle adjustment assembly includes an adjustment box (17) fixedly connected to the bottom wall of the outer shell (1), a second connecting pipe (16) communicating with the inside of the adjustment box (17), an adjustment plate (18) slidingly inside the adjustment box (17), an adjustment rack (19) symmetrically fixedly connected to one side of the adjustment plate (18), and several springs fixedly connected to the other side of the adjustment plate (18). The ends of the springs away from the adjustment plate (18) are all fixedly connected to the inner wall of the adjustment box (17). An adjustment rod (20) is symmetrically rotated on the inner wall of the outer shell (1). The ends of the adjustment rods (20) away from the adjustment gears (21) are all fixedly connected to the auxiliary plate (3). An adjustment gear (21) is fixedly connected to each adjustment rod (20), and the adjustment racks (19) mesh with their adjacent adjustment gears (21).

4. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 3, characterized in that, It also includes a cooling component for cooling the patient's limbs. The cooling component includes a cooling box (22) fixedly connected to the bottom wall of the outer shell (1). A cooling plate (23) is slidably fitted inside the cooling box (22). The end of the second rack (10) away from the drive gear (8) is fixedly connected to the cooling plate (23). The cooling box (22) is connected to a second inlet check valve (24) and a second outlet check valve (25). The flow direction of the second inlet check valve (24) is one-way from the outside of the cooling box (22) to the inside of the cooling box (22), and the flow direction of the second outlet check valve (25) is one-way from the inside of the cooling box (22) to the outside of the cooling box (22). An air supply channel is opened on the top wall of the outer shell (1) and it is connected to the second outlet check valve (25).

5. The intraoperative reduction maintenance device for supracondylar fractures of the humerus in children according to claim 4, characterized in that, It also includes a limiting component for limiting the adjustment rack (19). The limiting component includes a limiting frame (26) symmetrically fixedly connected to the two inner side walls of the housing (1). The adjustment rack (19) is located in the adjacent limiting frame (26) and slides laterally with the limiting frame (26).

6. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 5, characterized in that, It also includes an auxiliary component for assisting in the insertion of Kirschner wires. The auxiliary component includes a fixing plate (27) detachably connected to the auxiliary plate (3). Both the auxiliary plate (3) and the fixing plate (27) have insertion holes.

7. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 6, characterized in that, The top of the outer shell (1) has symmetrical through holes, and transparent baffles are fixedly connected to each through hole. An angle reference table is engraved on the top of each transparent baffle. The adjusting gears (21) are located inside the through holes adjacent to them, and angle reference lines are engraved on each adjusting gear (21).

8. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 7, characterized in that, A handle is fixedly connected to one side of the outer casing (1).

9. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 8, characterized in that, A storage box (2) is also fixedly connected to the outer shell (1).

10. The intraoperative reduction maintenance device for supracondylar fracture of the humerus in children according to claim 9, characterized in that, The top of the outer shell (1) is detachably connected with a breathable mesh.

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