A method for measuring scoliosis correction force

Abstract

The present invention provides a method for measuring the corrective force of scoliosis, which specifically includes: performing a CT scan on the wearer to obtain scoliosis data and establish a three-dimensional model; dividing the three-dimensional model into corrective force application areas to determine the corrective device model; printing the corrective device body according to the corrective device model; installing a pressure sensor on the corrective device body to detect the force on the corrective device body. The present invention also proposes an orthopedic device for measuring the corrective force of scoliosis. The present invention realizes the adjustment of the stiffness of the corrective device through a block structure design, and is manufactured using 3D printing technology. It can reflect personalized characteristics in a larger range, improve the corrective cure rate and the patient's treatment experience; improve the efficiency of medical treatment, and is suitable for popularization and use.

Description

Technical Field

[0001] The invention relates to the technical field of spinal correction, and in particular to a method for measuring scoliosis correction force. Background Art

[0002] Scoliosis is a condition in which one or more segments of the spine bend laterally away from the midline of the body in the coronal plane, forming a curved spinal deformity, which is usually accompanied by rotation of the spine and an increase or decrease in kyphosis or lordosis in the sagittal plane.

[0003] Commonly used treatment methods are divided into non-surgical treatment and surgical treatment. Non-surgical treatment includes a series of physical treatment methods such as brace orthosis, chiropractic therapy, and exercise therapy. When the patient is young and the Cobbs angle is less than 45°, the rational use of non-surgical brace orthosis can effectively control the development of the patient's scoliosis. If the brace treatment is effective, the patient's spine will eventually be close to that of a normal person, while the spine of patients who undergo internal fixation surgery will not be able to move normally. Compared with surgical treatment, brace treatment has its irreplaceable advantages.

[0004] However, the orthopedic device used for brace orthopedic treatment needs to adjust the orthopedic stress in stages according to the different stages of the orthopedic treatment. The commonly used thoracolumbar braces in clinical practice, such as the Charleston flexion brace, Crass Cheneau dynamic correction brace, SPoRT brace, SpineCor soft brace, and Boston brace, are all based on the three-point orthopedic principle. The Wilmington brace is customized for patients in a lying face-up position, and then the correction force is given according to the patient's scoliosis. The orthopedic force of the above braces during the orthopedic process is not quantified, so there is an inaccurate correction problem during the orthopedic treatment process. Summary of the invention

[0005] In order to overcome the problems existing in the above-mentioned prior art, the present invention provides a method for measuring scoliosis correction force, and designs a correction device according to the patient's spine scanning data and correction force measurement through a customized method.

[0006] The technical solution of the present invention is:

[0007] A method for measuring scoliosis correction force, specifically comprising:

[0008] Perform CT scans on the wearer to obtain scoliosis data and build a three-dimensional model;

[0009] Dividing the orthopedic force application area of ​​the three-dimensional model to determine the orthopedic device model;

[0010] printing an orthopedic device body according to the orthopedic device model;

[0011] The pressure sensor is installed on the orthopedic device body to detect the force applied to the orthopedic device body.

[0012] As a further technical solution of the present invention, the CT scanning of the wearer is performed to obtain scoliosis data and establish a three-dimensional model; specifically comprising:

[0013] The limbs of the patient who need to wear orthopedic devices are scanned by CT, and the mask of the limb that needs orthopedic devices is extracted from the CT data using Mimics software, and the mask is smoothed;

[0014] Extract the three-dimensional model of the internal skeleton of the limb to determine the orthopedic structure;

[0015] Save the Mask as a three-dimensional model in STL format for structural design of the orthopedic device.

[0016] As a further technical solution of the present invention, the three-dimensional model is divided into orthopedic force application areas to determine the orthopedic device model; specifically, it includes:

[0017] Import the STL format 3D model into Geomagic software to divide the orthopedic force application area;

[0018] In the orthopedic force application area, the orthopedic device force block structure design and muscle training structure design are carried out.

[0019] As a further technical solution of the present invention, the three-dimensional model in STL format is imported into Geomagic software to divide the orthopedic force application area;

[0020] Determine the end vertebra of the patient's scoliosis, including the upper end cone and the lower end cone, where the upper end cone and the lower end vertebra refer to the vertebrae with the largest inclination toward the concave side of the scoliosis;

[0021] Determine the patient's Cobb angle;

[0022] Extend the upper edge of the vertebral body of the upper vertebra of the patient's Cobb angle and the lower edge of the vertebral body of the lower vertebra to the convex side of the spine and intersect with the three-dimensional model at points A and B on the boundary. The arc length area between points A and B is the length of the convex side force application area of ​​the orthotic device.

[0023] Draw horizontal lines through points A and B, intersecting the three-dimensional model at points C and D on the concave side boundary. The arc length from point C to the upper edge of the three-dimensional model is the arc length of the force application area on the upper concave side of the spine of the orthosis device. The arc length from point D to the lower edge of the three-dimensional model is the arc length of the force application area on the lower concave side of the spine of the orthosis device.

[0024] The arc length between the patient's anterior axillary line and posterior axillary line was used as the width of the orthotic force application area on the convex and concave sides of the orthotic device.

[0025] As a further technical solution of the present invention, a force-applying block structure design of an orthopedic device and a muscle training structure design are performed in the orthopedic force-applying area, specifically including:

[0026] Import the 3D model of the orthopedic force application area in STL format into Rhino software, and use the Grasshopper plug-in to select the Surface of the orthopedic area into Grasshopper;

[0027] Create UV curves from the orthopedic area Surface imported into Rhino through projection, and create projection planes from the projected UV curves through Surface fromplanarcurves;

[0028] UV is divided on the projection plane, and Hexagon shapes are distributed at the intersection of UVs and stretched (or other graphic shapes such as Voronoi). The stretching distance range is 0-20mm, and the range of the distribution number is as follows:

[0029] U direction: 5%×U divisions<Number of Hexagon shapes<30%×U divisions

[0030] V direction: 5%×V divisions<Number of Hexagon shapes<30%×V divisions

[0031] The block structure stretched out in a planar position is projected onto the orthopedic force application area and saved as a computer three-dimensional model in STL format.

[0032] As a further technical solution of the present invention, the printing of the orthopedic device body according to the orthopedic device model specifically includes:

[0033] Determine the distribution area of ​​the hollow vents of the orthopedic device model;

[0034] Import STL files into Magics software for process planning;

[0035] The main body of the orthopedic device was printed using FDM 3D printing technology.

[0036] As a further technical solution of the present invention, the distribution area of ​​the hollow ventilation holes of the orthopedic device model is determined; specifically, other areas outside the force application area of ​​the orthopedic device and the area between the upper and lower concave sides and the anterior axillary line and the posterior axillary line are hollow structures based on Thiessen polygons, and their distribution and hole sizes are randomly distributed.

[0037] As a further technical solution of the present invention, the main body of the orthopedic device is made of TPU material and is formed in one step by FDM additive manufacturing process.

[0038] The beneficial effects of the present invention are:

[0039] 1. The present invention provides a customized orthopedic device and a design method. The orthopedic device can adapt to the patient's body surface morphology. The variable stiffness feature can accurately correct the patient's orthopedic parts and reduce the number of times the patient relies on the orthopedic device. The block structure design can adjust the stiffness of the orthopedic device. Compared with the existing solutions, the orthopedic effect is good, non-invasive, personalized and low-cost.

[0040] 2. The present invention adopts 3D printing technology for manufacturing, which can reflect personalized characteristics in a wider range, improve the orthopedic cure rate and the patient's treatment experience;

[0041] 3. Compared with traditional orthopedic devices, the present invention has advantages in design cycle and manufacturing time, can improve medical treatment efficiency, has a simple and convenient overall structure, good operability, is easy to operate, is suitable for promotion and use, has a wide range of application fields and good economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 A flow chart of a method for manufacturing a scoliosis correction force measurement correction device proposed by the present invention;

[0043] Figure 2 It is a diagram illustrating the design method of the orthopedic force-applying block structure of the present invention;

[0044] Figure 3 For the present invention Figure 2 Left side view shown;

[0045] Figure 4 For the present invention Figure 2 Right view of;

[0046] Figure 5 This is a diagram illustrating the principle of orthopedic force application and muscle training of the present invention;

[0047] Figure 6 This is a structural diagram of a scoliosis correction force measurement device proposed by the present invention;

[0048] Figure 7 For the present invention Figure 6 Section view along the midline AA;

[0049] Figure 8 For the present invention Figure 6 Sectional view along the midline CC;

[0050] Fig. 9 This is a diagram illustrating the connection between the sensor and the computer in the pressure test link proposed by the present invention;

[0051] Fig.10This is a pressure test diagram of a specific embodiment of the present invention. DETAILED DESCRIPTION

[0052] The following will be combined with the embodiments and drawings to clearly and completely describe the concept, specific structure and technical effects of the present invention, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0053] See also Figure 1 , which is a flow chart of a method for measuring scoliosis correction force proposed by the present invention;

[0054] like Figure 1 As shown, a method for measuring scoliosis correction force specifically includes:

[0055] Step 101, performing a CT scan on the wearer to obtain scoliosis data and establish a three-dimensional model;

[0056] Step 102, dividing the three-dimensional model into orthopedic force application areas to determine an orthopedic device model;

[0057] Step 103, printing the orthopedic device body according to the orthopedic device model;

[0058] Step 104: Install the pressure sensor on the orthopedic device body to detect the force applied to the orthopedic device body.

[0059] In the embodiment of the present invention, a CT scan is performed on the wearer to obtain scoliosis data and establish a three-dimensional model; specifically, the method includes: performing a CT (Computed Tomography) scan on the limb of the patient who needs to wear the orthotic device, and after obtaining the CT data, using Mimics software (Materialise, Inc., Belgium) to extract the Mask of the limb that needs to be orthopedic, and then performing a smoothing process on the Mask after extracting the Mask; while extracting the Mask of the limb that needs to be orthopedic, a three-dimensional model of the bones inside the limb is extracted to facilitate the determination of the orthotic structure on the orthotic device; finally, the Mask is saved as a three-dimensional model in STL format to perform structural modeling design of the orthotic device;

[0060] In an embodiment of the present invention, a three-dimensional scanner can also be used to scan the patient's torso while the patient is in the patient state, with the standing axis as the axis, and the scanning is continuously rotated, and each scanning result will be automatically aligned; after obtaining the complete point cloud data of the lower limb scan, the model is processed using Geomagic and imageware software to obtain the patient's Nurbs surface limb model.

[0061] See also Figures 2 to 4 ,in Figure 2 It is a diagram illustrating the design method of the orthopedic force-applying block structure of the present invention; Figure 3 For the present invention Figure 2 The left side view shown, Figure 4 For the present invention Figure 2 Right view of .

[0062] like Figures 2 to 4 , dividing the orthopedic force application area of ​​the three-dimensional model to determine the orthopedic device model; specifically including:

[0063] Import the STL format 3D model into Geomagic software to divide the orthopedic force application area;

[0064] In the orthopedic force application area, the orthopedic device force block structure design and muscle training structure design are carried out.

[0065] Among them, the STL format 3D model is imported into Geomagic software to divide the orthopedic force application area; including:

[0066] Determine the end vertebra of the patient's scoliosis, including the upper end cone and the lower end cone, where the upper end cone and the lower end vertebra refer to the vertebrae with the largest inclination toward the concave side of the scoliosis;

[0067] Determine the patient's Cobb angle;

[0068] Extend the upper edge of the vertebral body of the upper vertebra of the patient's Cobb angle and the lower edge of the vertebral body of the lower vertebra to the convex side of the spine and intersect with the three-dimensional model at points A and B on the boundary. The arc length area between points A and B is the length of the convex side force application area of ​​the orthotic device.

[0069] Draw horizontal lines through points A and B, intersecting the three-dimensional model at points C and D on the concave side boundary. The arc length from point C to the upper edge of the three-dimensional model is the arc length of the force application area on the upper concave side of the spine of the orthosis device. The arc length from point D to the lower edge of the three-dimensional model is the arc length of the force application area on the lower concave side of the spine of the orthosis device.

[0070] The arc length between the patient's anterior axillary line and posterior axillary line was used as the width of the orthotic force application area on the convex and concave sides of the orthotic device.

[0071] In the embodiment of the present invention, the orthopedic device force application block structure design and the muscle training structure design are performed in the orthopedic force application area, specifically including:

[0072] Import the 3D model of the orthopedic force application area in STL format into Rhino software, and use the Grasshopper plug-in to select the Surface of the orthopedic area into Grasshopper;

[0073] Create UV curves from the orthopedic area Surface imported into Rhino through projection, and create projection planes from the projected UV curves through Surface fromplanarcurves;

[0074] UV is divided on the projection plane, and Hexagon shapes are distributed at the intersection of UVs and stretched (or other graphic shapes such as Voronoi). The stretching distance range is 0-20mm, and the range of the distribution number is as follows:

[0075] U direction: 5%×U divisions<Number of Hexagon shapes<30%×U divisions

[0076] V direction: 5%×V divisions<Number of Hexagon shapes<30%×V divisions

[0077] The block structure stretched out in a planar position is projected onto the orthopedic force application area and saved as a computer three-dimensional model in STL format.

[0078] According to the above method, the block muscle training structure on the outside between the central orthopedic force application areas ② and ③ can be designed.

[0079] Figure 5 This is a diagram illustrating the principle of orthopedic force application and muscle training of the present invention. Based on the three-point force orthopedic principle, the present invention is designed with a block structure in the orthopedic force application area, such as Figure 5 As shown in ①, ②, and ③, when the user tightens the tightening holes on the orthopedic device body through a strap, the orthopedic device will transmit the tightening orthopedic force to the ribs and spine through the block structures designed on the three force application areas, thereby achieving spinal correction. Figure 5 A block-shaped protruding structure is designed on the outer side of the middle of the corrective force application areas ② and ③. When the user performs scoliotic exercise in the coronal plane, the gap between the block-shaped structure of the corrective force application areas ② and ③ will be reduced and contact compression will begin to occur, thereby generating deformation resistance to prevent excessive scoliosis. At the same time, the user can fill and remove pads in the gap between the block-shaped structure on the outer side of the corrective force application areas ② and ③, thereby achieving scoliotic and stretching exercises of the spine in the coronal plane and exercising the muscles around the spine.

[0080] In an embodiment of the present invention, the orthopedic device body is printed according to the orthopedic device model; specifically, the method includes:

[0081] Determine the distribution area of ​​the hollow vents of the orthopedic device model;

[0082] Import STL files into Magics software for process planning;

[0083] The main body of the orthopedic device was printed using FDM 3D printing technology.

[0084] Among them, the distribution area of ​​the hollow vents of the orthopedic device model is determined; specifically, the areas other than the force application area of ​​the orthopedic device and the area between the upper and lower concave sides, the anterior axillary line and the posterior axillary line are hollow structures based on Thiessen polygons, and the size of the openings is randomly distributed. The hollow structure on the side of the main body of the orthopedic device is a pore structure based on Thiessen polygons, which improves breathability and comfort.

[0085] Convert the determined 3D model into STL format, import the STL file into Magics software for process planning, including adding supports, etc.; then enter the 3D printing process.

[0086] In the embodiment of the present invention, the method of printing the orthopedic device body by using the FDM 3D printing process specifically includes: using the FDM 3D printing process to print and shape the orthopedic device by using 100% filling of TPU material.

[0087] See also Figure 6-Figure 9 , which is a structural diagram of a scoliosis correction force measurement orthopedic device proposed by the present invention; Figure 7 For the present invention Figure 6 Section view along the midline AA; Figure 8 For the present invention Figure 6 Section view along the center line CC, Fig. 9 This is a diagram illustrating the connection between the sensor and the computer in the pressure test link proposed by the present invention.

[0088] The method used in the embodiment of the present invention is applicable to the following measurement orthopedic devices, including:

[0089] an orthopedic body 201,

[0090] A first correction protrusion 202, disposed on the concave side of the orthotic body;

[0091] A second correction protrusion 203 is provided on the upper part of the convex side of the correction body;

[0092] A third correction protrusion 204 is provided at the lower part of the convex side of the orthotic body;

[0093] The pressure sensor group 205 is used to detect the pressure on the orthotic body, including a first pressure sensor, a second pressure sensor and a third pressure sensor, which are respectively arranged on the first correction convex block, the second correction convex block and the third correction convex block;

[0094] The single chip microcomputer 206 receives the detection signal of the pressure sensor group and sends the detection signal to the control computer.

[0095] In an embodiment of the present invention, a full-length anteroposterior CT scan (or MRI scan) of the spine of a patient in a standing position is performed to establish a three-dimensional digital model of the spine required for the design of an orthopedic device; the data obtained from the CT scan (or MRI scan) is processed by Mimics to obtain a three-dimensional digital model in STL format; the contour design of the orthopedic device, the delineation of the orthopedic force adjustment structure area, and the block structure design are performed based on the three-dimensional digital model, the Cobb angle of the patient's scoliosis, and the anterior and posterior axillary lines; the orthopedic device corrects scoliosis by applying three-point pressure (three-point correction force system) to the ribs and spine; the orthopedic force application area of ​​the orthopedic device is designed with a raised homogeneously distributed block structure, through which the ribs and spine are corrected; a mechanical sensor is attached to each block structure, the mechanical sensor is connected to a computer through a single-chip microcomputer, the patient wears the orthopedic device with the mechanical sensor, and the pressure on the block structure is tested in postures such as standing and sitting; according to the pressure on each block structure, the average pressure of each orthopedic force application area is calculated. According to the principle of the three-point correction force system, the pressure test results are analyzed, and the position of the correction force application area and the height of the block structure are adjusted; after the adjustment, the test is carried out again, and the correction force application area is adjusted many times until the correction force application area meets the patient's physical characteristics and the correction force size is suitable for the patient's condition. The orthotic device is made of TPU material and formed in one step by FDM additive manufacturing process.

[0096] In the embodiment of the present invention, the orthopedic force of the manufactured orthopedic device is measured and analyzed by pressure testing, specifically:

[0097] On the block structure of the orthopedic force application area, that is Figure 7 , Figure 8 In the ①, ②, and ③ regions, a mechanical sensor patch is attached to the center of each block structure; the patch is connected to the computer through a single-chip microcomputer, and the connection method is as follows Fig. 9 As shown, after the connection is completed, the computer can detect and record the pressure of each sensor at a certain moment in real time for subsequent analysis;

[0098] The patient wears the orthotic device and connects the test circuit. The patient is tested in standing and sitting positions, and several sets of test data in standing and sitting positions are recorded;

[0099] Calculate each moment separately, Figure 7 Middle① (convex side of orthotic device), Figure 8 Middle ② (on the concave side of the orthotic device) and Figure 8 The average forces at point ③ (under the concave side of the orthotic device) are recorded as F1, F2 and F3 respectively; with time as the horizontal axis and pressure as the vertical axis, the changes of F1 (i.e., convex side pressure) and F2+F3 (i.e., concave side pressure) over time are recorded as a line graph, as shown in Fig.10 Line chart of the example;

[0100] Analyze the line graph: According to the principle of force balance, ideally, the force on the convex side should be approximately equal to the force on the concave side, that is, F1≈F2+F3, and the pressure should always be kept within the range that can play a corrective role and that the patient can bear; if the pressure on both sides differs too much, and the pressure data on one side is always too small or even close to 0, it means that the block-like protrusion structure on that side is not in enough contact with the patient's body, and the position and shape of the area need to be adjusted; if the pressure data on both sides are too small or even close to 0, it means that the pressure applied by the orthotic device does not reach the corrective force required for correction, and it is necessary to consider tightening the straps or increasing the height of the block-like structure; if Fig.10 In the line graph of the example, the pressure difference on both sides is too large, and the position of the protrusion structure should be adjusted.

[0101] Based on the above analysis, the orthotic device is further improved and tested again after improvement until the orthotic device design achieves the expected effect.

[0102] The invention provides a customized orthopedic device and design method. The orthopedic device can adapt to the patient's body surface morphology. The variable stiffness feature can accurately correct the patient's orthopedic parts while reducing the number of times the patient relies on the orthopedic device. The invention is manufactured using 3D printing technology, which can reflect personalized characteristics in a larger range, improve the orthopedic cure rate and the patient's treatment experience. Compared with traditional orthopedic devices, the invention has advantages in design cycle and manufacturing time, and can improve medical treatment efficiency.

[0103] The present invention realizes the stiffness adjustment of the orthopedic device through the block structure design. Compared with the existing solutions, it has good orthopedic effect, is non-traumatic, can be customized, and has low cost. The overall structure is simple and convenient, the operability effect is good, the operation is convenient and easy, it is suitable for promotion and use, and has a wide range of application fields and good economic benefits.

[0104] The present invention is described in detail above, but the present invention is not limited to the above-mentioned embodiments. Various changes can be made within the knowledge of ordinary technicians in the field without departing from the purpose of the present invention. Many other changes and modifications can be made without departing from the concept and scope of the present invention. It should be understood that the present invention is not limited to specific embodiments, and the scope of the present invention is defined by the appended claims.

Claims

1. A method for measuring scoliosis correction force, characterized in that: Specifically include: Perform CT scans on the wearer to obtain scoliosis data and build a three-dimensional model; Dividing the orthopedic force application area of ​​the three-dimensional model to determine the orthopedic device model; printing an orthopedic device body according to the orthopedic device model; Installing a pressure sensor on the orthopedic device body to detect the force applied to the orthopedic device body; The method of dividing the orthopedic force application area of ​​the three-dimensional model to determine the orthopedic device model specifically includes: importing the three-dimensional model in STL format into Geomagic software to divide the orthopedic force application area; designing the orthopedic device force application block structure and muscle training structure in the orthopedic force application area; The three-dimensional model in STL format is imported into Geomagic software to divide the orthopedic force application area, specifically including: Determine the end vertebra of the patient's scoliosis, including the upper end cone and the lower end cone, where the upper end cone and the lower end vertebra refer to the vertebrae with the largest inclination toward the concave side of the scoliosis; Determine the patient's Cobb angle; Extend the upper edge of the vertebral body of the upper vertebra of the patient's Cobb angle and the lower edge of the vertebral body of the lower vertebra to the convex side of the spine and intersect with the three-dimensional model at points A and B on the boundary. The arc length area between points A and B is the length of the convex side force application area of ​​the orthotic device. Draw horizontal lines through points A and B, intersecting the three-dimensional model at points C and D on the concave side boundary. The arc length from point C to the upper edge of the three-dimensional model is the arc length of the force application area on the upper concave side of the spine of the orthosis device. The arc length from point D to the lower edge of the three-dimensional model is the arc length of the force application area on the lower concave side of the spine of the orthosis device. The arc length between the patient's anterior axillary line and posterior axillary line is used as the width of the orthopedic force application area on the convex and concave sides of the orthotic device; A block-shaped protrusion structure is designed on the outside of the middle of the orthopedic force application area. When the user performs scoliotic exercise in the coronal plane, the gap between the block structures between the orthopedic force application areas will be reduced and contact and compression will begin to occur, thereby generating deformation resistance to prevent excessive scoliosis; at the same time, the user can fill and remove the block structure gap on the outside between the orthopedic force application areas; A mechanical sensor is attached to each of the block-like raised structures, and the mechanical sensor is connected to a computer through a single-chip microcomputer. The patient wears an orthotic device with a mechanical sensor, and the pressure on the block-like structure is tested in standing and sitting postures; based on the pressure on each block-like structure, the average pressure of each orthotic force application area is calculated; based on the principle of a three-point corrective force system, the pressure test results are analyzed, and the position of the orthotic force application area and the raised height of the block-like structure are adjusted; after the adjustment is completed, the test is performed again, and adjustments are made multiple times until the orthotic force application area meets the patient's physical characteristics and the size of the orthotic force is suitable for the patient's condition.

2. A method for measuring scoliosis correction force according to claim 1, characterized in that: The method of performing CT scanning on the wearer to obtain scoliosis data and establish a three-dimensional model specifically includes: The limbs of the patient who need to wear orthopedic devices are scanned by CT, and the mask of the limb that needs orthopedic devices is extracted from the CT data using Mimics software, and the mask is smoothed; Extract the three-dimensional model of the internal skeleton of the limb to determine the orthopedic structure; Save the Mask as a three-dimensional model in STL format for structural design of the orthopedic device.

3. A method for measuring scoliosis correction force according to claim 1, characterized in that: The design of the orthopedic device force-applying block structure and the design of the muscle training structure in the orthopedic force-applying area specifically include: Import the 3D model of the orthopedic force application area in STL format into Rhino software, and use the Grasshopper plug-in to select the Surface of the orthopedic area into Grasshopper; Create UV curves from the orthopedic area Surface imported into Rhino through projection, and create projection planes from the projected UV curves through Surface fromplanar curves; Divide the projection plane by UV, distribute Hexagon shapes at the intersection of UV and stretch them. The range of the distribution number is as follows: U direction: 5%×U divisions<Number of Hexagon shapes<30%×U divisions; V direction: 5%×V divisions<Number of Hexagon shapes<30%×V divisions; The block structure stretched out in a planar position is projected onto the orthopedic force application area and saved as a computer three-dimensional model in STL format.

4. A method for measuring scoliosis correction force according to claim 1, characterized in that: Printing the orthopedic device body according to the orthopedic device model specifically includes: Determine the distribution area of ​​the hollow vents of the orthopedic device model; Import STL files into Magics software for process planning; The main body of the orthopedic device was printed using FDM 3D printing technology.

5. A method for measuring scoliosis correction force according to claim 4, characterized in that: The method of determining the hollow vent distribution area of ​​the orthopedic device model specifically includes: the other areas outside the force application area of ​​the orthopedic device and the area between the upper and lower concave sides and the anterior axillary line and the posterior axillary line are hollow structures based on Thiessen polygons, and their distribution and opening sizes are randomly distributed.

6. A method for measuring scoliosis correction force according to claim 1, characterized in that: The main body of the orthopedic device is made of TPU material and is formed in one step by FDM additive manufacturing process.

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