A method for testing the bending mechanical properties of a corrective rehabilitation treatment appliance and its fixture

Abstract

A method and fixture for testing the bending mechanical properties of a corrective and rehabilitation therapy device based on a 3D printing personalized bending performance test fixture, which is carried out through three steps, and the bending mechanical properties of the corrective and rehabilitation therapy device are obtained through the personalized bending performance test fixture. The corrective and rehabilitation therapy device has a first functional part, a rotating shaft and a second functional part. The first functional part and the second functional part are respectively movably assembled on the rotating shaft, and the first functional part and the second functional part rotate relative to the rotating shaft. The present invention can obtain a personalized bending performance test fixture, and through this personalized bending performance test fixture, a linear force application is applied to the corrective and rehabilitation therapy device to test the bending performance of the corrective and rehabilitation therapy device, making up for the inability to test the bending performance of the corrective and rehabilitation therapy device in the prior art.

Description

Technical Field

[0001] The present invention relates to the technical field of performance detection of medical devices, such as reliability and tolerance, and particularly relates to a method and fixture for testing the bending mechanical properties of orthopedic rehabilitation appliances based on a 3D printing personalized bending performance test fixture. Background Art

[0002] With the development of technology, orthopedic or rehabilitation medical appliances such as joints and teeth have better structures and excellent performances.

[0003] Regarding the performance of appliances for orthopedic rehabilitation treatment of parts with stretching and bending movements such as the elbow joint, knee joint, upper and lower jaws, fingers, and toes, the prior art mainly focuses on the realization of functions. For example, for an elbow joint rehabilitation appliance, it mainly depends on whether it can fix the elbow joint at a required positioning position or whether it can perform adjustment training on the elbow joint. It cannot perform life detection under the bending force of the elbow joint rehabilitation appliance, how much force needs to be applied at a certain bending degree, and bending performance detection such as the force limit.

[0004] Therefore, in the prior art, such orthopedic rehabilitation appliances only stay in the qualitative stage of function realization and uncertain bending performance, and the mechanical properties of the orthopedic rehabilitation appliances cannot be accurately known.

[0005] However, with the improvement of precision requirements, in addition to meeting functional performance, orthopedic rehabilitation appliances also require standard or accurate mechanical bending performance requirements.

[0006] Medical device testing institutions currently cannot perform mechanical property detection in the bending state. Existing testing institutions can only perform force application detection in the linear direction. The main reason for this limitation is that there is no suitable testing fixture to achieve the conversion of linear acting force.

[0007] Most of the existing orthopedic rehabilitation appliances are customized according to users, and the shape, length, width and other parameters of orthopedic rehabilitation appliances for different parts are different. Even for orthopedic rehabilitation appliances of the same part for users of different ages or weights, they are also different. For example, the length and width of a child's knee joint are smaller than those of an adult; the surface curvature of an orthopedic rehabilitation appliance for a user with a heavier weight is less than that of a user with a lighter weight. Therefore, the parameters of orthopedic rehabilitation appliances of the same part are also different, and the existing testing fixtures cannot be suitable for fixing different orthopedic rehabilitation appliances.

[0008] Therefore, aiming at the deficiencies of the prior art, it is very necessary to provide a method and fixture for testing the bending mechanical properties of orthopedic rehabilitation appliances based on a 3D printing personalized bending performance test fixture to solve the deficiencies of the prior art. Summary of the Invention

[0009] One of the objectives of the present invention is to avoid the deficiencies of the prior art and provide a method for testing the bending mechanical properties of a corrective and rehabilitative treatment device based on a 3D-printed personalized bending performance test fixture. The method for testing the bending mechanical properties of a corrective and rehabilitative treatment device based on a 3D-printed personalized bending performance test fixture can obtain a personalized bending performance test fixture, and test the bending performance of the corrective and rehabilitative treatment device through this personalized bending performance test fixture, making up for the inability to test the bending performance of corrective and rehabilitative treatment devices in the prior art.

[0010] The above objective of the present invention is achieved by the following technical measures:

[0011] Provide a method for testing the bending mechanical properties of a corrective and rehabilitative treatment device based on a 3D-printed personalized bending performance test fixture, which is carried out through the following steps:

[0012] Step 1: Scan the corrective and rehabilitative treatment device to generate a personalized bending performance test fixture model that matches the corrective and rehabilitative treatment device, and print the personalized bending performance test fixture by means of 3D printing;

[0013] Step 2: Fix the corrective and rehabilitative treatment device to the personalized bending performance test fixture;

[0014] Step 3: Apply force to the personalized bending performance test fixture through a linear force application mechanism, and the corrective and rehabilitative treatment device performs a bending action under the drive of the personalized bending performance test fixture, while obtaining the bending mechanical properties of the corrective and rehabilitative treatment device.

[0015] The corrective and rehabilitative treatment device has a first functional part, a rotating shaft, and a second functional part. The first functional part and the second functional part are respectively movably assembled on the rotating shaft, and the first functional part and the second functional part rotate relative to the rotating shaft.

[0016] The corrective and rehabilitative treatment device is an elbow joint rehabilitation device, a wrist joint rehabilitation device, a knee joint rehabilitation device, a hip joint rehabilitation device, an ankle joint rehabilitation device, an upper and lower jaw bone rehabilitation device, a finger joint rehabilitation device, a toe joint rehabilitation device, or a cervical spine rehabilitation device.

[0017] Preferably, the above-mentioned personalized bending performance test fixture is provided with a fixture main body and a bending motion mechanism, and the bending motion mechanism is assembled on the fixture main body.

[0018] Preferably, the above-mentioned bending motion mechanism is provided with a fixing device and a bending device. The fixing device is fixedly assembled with the fixture main body, and the bending device is movably assembled on the fixing device and the fixture main body.

[0019] Preferably, the fixing device is provided with a fixing plate and a fixed wheel part. The fixing plate is fixedly assembled to the fixture main body, and the fixing plate is also movably assembled with the bending device. The fixed wheel part is fixedly assembled to the end of the fixing plate.

[0020] Preferably, the bending device is provided with a moving shaft, a connecting cross bar, a moving wheel part and a connecting block. The moving shaft is movably sleeved on the fixing plate, the connecting cross bar is fixedly assembled with the moving shaft, the moving wheel part is movably assembled on the connecting cross bar, and the two ends of the connecting block are respectively movably assembled corresponding to the fixed wheel part and the moving wheel part. The moving wheel part is fixed to the rotating shaft of the orthopedic rehabilitation treatment appliance.

[0021] Preferably, the moving wheel part makes a reciprocating circular arc movement with the fixed wheel part as the center and the connecting block as the radius.

[0022] Preferably, the moving shaft makes a reciprocating linear movement up and down along the fixing plate.

[0023] Preferably, the fixing plate is provided with a plate body and a collar. The collar is fixedly connected to the plate body. The moving shaft is movably sleeved on the collar. The plate body is fixedly assembled to the fixture main body. The fixed wheel part is fixedly assembled to the plate body and away from the collar.

[0024] Preferably, the connecting cross bar is provided with a groove body, and the moving wheel part is movably sleeved on the groove body.

[0025] Preferably, the personalized bending performance test fixture is further provided with a first fixing part matching the first functional part and a second fixing part matching the second functional part. The first fixing part is fixedly assembled to the fixing plate, and the second fixing part is fixedly assembled with the moving wheel part.

[0026] Preferably, the first fixing part is fixed to the first functional part.

[0027] Preferably, the second fixing part is fixed to the second functional part.

[0028] Preferably, the fixture main body is provided with a base, and the plate body is fixedly assembled to the base.

[0029] Preferably, the fixture main body is further provided with an assembly rod fixedly assembled with the linear force application mechanism. The assembly rod is fixedly assembled with one end of the moving shaft.

[0030] Preferably, both the fixing device and the bending device are provided in two sets.

[0031] Preferably, the linear force application mechanism is an MTS pressure testing machine.

[0032] Preferably, the bending mechanical properties are bending life performance, ultimate stress performance, and fixed-point force performance.

[0033] Another object of the present invention is to provide a 3D printing personalized bending performance test fixture to avoid the deficiencies of the prior art. The 3D printing personalized bending performance test fixture can apply a linear force to the orthopedic rehabilitation treatment device to test the bending performance of the orthopedic rehabilitation treatment device, making up for the inability to test the bending performance of the orthopedic rehabilitation treatment device in the prior art.

[0034] The above object of the present invention is achieved by the following technical measures:

[0035] Provide a 3D printing personalized bending performance test fixture, and the 3D printing personalized bending performance test fixture is the above-mentioned personalized bending performance test fixture.

[0036] A method and fixture for testing the bending mechanical properties of an orthopedic rehabilitation treatment device based on a 3D printing personalized bending performance test fixture are carried out through three steps to obtain the bending mechanical properties of the orthopedic rehabilitation treatment device through the personalized bending performance test fixture. The present invention can obtain a personalized bending performance test fixture, and apply a linear force to the orthopedic rehabilitation treatment device through the personalized bending performance test fixture to test the bending performance of the orthopedic rehabilitation treatment device, making up for the inability to test the bending performance of the orthopedic rehabilitation treatment device in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The present invention is further described with reference to the accompanying drawings, but the content in the drawings does not constitute any limitation to the present invention.

[0038] Figure 1 It is a flowchart of a method for testing the bending mechanical properties of an orthopedic rehabilitation treatment device based on a 3D printing personalized bending performance test fixture.

[0039] Figure 2 It is a three-dimensional schematic diagram of a personalized bending performance test fixture in Embodiment 2.

[0040] Figure 3 It is a schematic diagram of a bending motion mechanism.

[0041] Figure 4 For Figure 3 The top view in.

[0042] Figure 5 It is a schematic diagram of the bending device performing circular arc motion.

[0043] Figure 6 It is a schematic diagram of a wrist joint rehabilitation treatment device.

[0044] In Figures 1 to 6 It includes:

[0045] Fixture main body 100,

[0046] Base 110, assembly rod 120,

[0047] Bending motion mechanism 200,

[0048] Fixing device 210,

[0049] Fixing plate 211, plate body 2111, collar 2112,

[0050] Fixed wheel part 212,

[0051] Bending device 220,

[0052] Moving shaft 221,

[0053] Connecting cross bar 222, groove body 2221,

[0054] Moving wheel part 223,

[0055] Connecting block 224,

[0056] First fixing part 300, second fixing part 400, first functional part 500, second functional part 600, rotating shaft 700, spring 800. Specific implementation mode

[0057] The technical solution of the present invention will be further described in conjunction with the following embodiments.

[0058] Embodiment 1.

[0059] A method for testing the bending mechanical properties of a correction and rehabilitation therapy appliance based on a 3D printing personalized bending performance test fixture, as Figure 1 shown, is carried out through the following steps:

[0060] Step 1: Scan the correction and rehabilitation therapy appliance to generate a personalized bending performance test fixture model matching the correction and rehabilitation therapy appliance, and print the personalized bending performance test fixture by means of 3D printing;

[0061] Step 2: Fix the correction and rehabilitation therapy appliance to the personalized bending performance test fixture;

[0062] Step 3: Apply force to the personalized bending performance test fixture through a linear force application mechanism, and the correction and rehabilitation therapy appliance performs a bending action driven by the personalized bending performance test fixture, and at the same time, the bending mechanical properties of the correction and rehabilitation therapy appliance are obtained.

[0063] The correction and rehabilitation therapy appliance has a first functional part 500, a rotating shaft 700 and a second functional part 600. The first functional part 500 and the second functional part 600 are respectively movably assembled on the rotating shaft 700, and the first functional part 500 and the second functional part 600 rotate relative to the rotating shaft 700.

[0064] It should be noted that when the orthopedic rehabilitation treatment device of the present invention is in use, the first functional part 500 and the second functional part 600 are respectively fixed to the corresponding two ends of the part of the user to be rehabilitated. The movement of the part of the user to be rehabilitated is restricted by the first functional part 500, the second functional part 600 and the rotating shaft 700 to achieve the orthopedic effect. The part to be rehabilitated can be the elbow joint, wrist joint, knee joint, hip joint, ankle joint, upper and lower jaws, finger joints, toe joints or cervical vertebra, etc.

[0065] The orthopedic rehabilitation treatment device is an elbow joint rehabilitation device, a wrist joint rehabilitation device, a knee joint rehabilitation device, a hip joint rehabilitation device, an ankle joint rehabilitation device, an upper and lower jaw rehabilitation device, a finger joint rehabilitation device, a toe joint rehabilitation device or a cervical vertebra rehabilitation device.

[0066] The linear force application mechanism of the present invention is an MTS pressure testing machine. And the bending mechanical properties of the present invention are the bending life performance, the ultimate stress-bearing performance, and the fixed-point force performance.

[0067] The present invention converts the linear motion of the MTS pressure testing machine into a bending or folding force on the orthopedic rehabilitation treatment device through a personalized bending performance test fixture. The bending life performance refers to the number of bending times reached when the orthopedic rehabilitation treatment device is bent through the personalized bending performance test fixture until it is damaged. The ultimate stress-bearing performance refers to how many pascals of force are applied to the orthopedic rehabilitation treatment device through the personalized bending performance test fixture until it is damaged. The fixed-point force performance refers to how many pascals of force are applied to the orthopedic rehabilitation treatment device through the personalized bending performance test fixture to achieve the bending effect or the folding effect.

[0068] It should be noted that the generation of the personalized bending performance test fixture model matching the orthopedic rehabilitation treatment device mentioned in the present invention means that the length, width of the detection area of the personalized bending performance test fixture and the fixed contact surface with the orthopedic rehabilitation treatment device all match the orthopedic rehabilitation treatment device, so as to stably fix the orthopedic rehabilitation treatment device and accurately obtain its bending mechanical properties.

[0069] The method for testing the bending mechanical properties of the orthopedic rehabilitation treatment device based on the 3D printing personalized bending performance test fixture is carried out in three steps to obtain the bending mechanical properties of the orthopedic rehabilitation treatment device through the personalized bending performance test fixture. The present invention can obtain a personalized bending performance test fixture, and through this personalized bending performance test fixture, a linear force application is applied to the orthopedic rehabilitation treatment device to conduct the bending performance test of the orthopedic rehabilitation treatment device, making up for the deficiency in the prior art that the bending performance test of the orthopedic rehabilitation treatment device cannot be carried out.

[0070] Embodiment 2.

[0071] A method for testing the bending mechanical properties of a corrective rehabilitation device based on a 3D printing personalized bending performance test fixture, as Figures 2 - 5 shown. Other features are the same as those in Embodiment 1, and it further has the following features: The personalized bending performance test fixture is provided with a fixture main body 100 and a bending motion mechanism 200, and the bending motion mechanism 200 is assembled on the fixture main body 100.

[0072] The bending motion mechanism 200 is provided with a fixing device 210 and a bending device 220. The fixing device 210 is fixedly assembled with the fixture main body 100, and the bending device 220 is movably assembled on the fixing device 210 and the fixture main body 100.

[0073] The fixing device 210 is provided with a fixing plate 211 and a fixed wheel part 212. The fixing plate 211 is fixedly assembled on the fixture main body 100. The fixing plate 211 is also movably assembled with the bending device 220, and the fixed wheel part 212 is fixedly assembled at the end of the fixing plate 211.

[0074] The bending device 220 is provided with a moving shaft 221, a connecting cross bar 222, a moving wheel part 223 and a connecting block 224. The moving shaft 221 is movably sleeved on the fixing plate 211. The connecting cross bar 222 is fixedly assembled with the moving shaft 221. The moving wheel part 223 is movably assembled on the connecting cross bar 222. The two ends of the connecting block 224 are respectively movably assembled with the fixed wheel part 212 and the moving wheel part 223 in correspondence, and the moving wheel part 223 is fixed to the rotating shaft 700 of the corrective rehabilitation device.

[0075] The moving wheel part 223 makes an arc reciprocating motion with the fixed wheel part 212 as the center and the connecting block 224 as the radius. The moving shaft 221 makes a reciprocating linear motion up and down along the fixing plate 211.

[0076] The fixing plate 211 is provided with a plate body 2111 and a sleeve ring 2112. The sleeve ring 2112 is fixedly connected to the plate body 2111. The moving shaft 221 is movably sleeved on the sleeve ring 2112. The plate body 2111 is fixedly assembled on the fixture main body 100. The fixed wheel part 212 is fixedly assembled on the plate body 2111 and away from the sleeve ring 2112. The connecting cross bar 222 is provided with a groove body 2221, and the moving wheel part 223 is movably sleeved in the groove body 2221.

[0077] The personalized bending performance test fixture is further provided with a first fixing part 300 matching the first functional part 500 and a second fixing part 400 matching the second functional part 600. The first fixing part 300 is fixedly assembled on the fixing plate 211, and the second fixing part 400 is fixedly assembled with the moving wheel part 223. The first fixing part 300 is fixed to the first functional part 500. The second fixing part 400 is fixed to the second functional part 600.

[0078] The fixture body 100 is provided with a base 110, and the plate body 2111 is fixedly assembled to the base 110. The fixture body 100 is further provided with an assembly rod 120 fixedly assembled with the linear force application mechanism, and the assembly rod 120 is fixedly assembled with one end of the moving shaft 221.

[0079] Both the fixing device 210 and the bending device 220 are provided in two sets. The beneficial effect of providing both the fixing device 210 and the bending device 220 of the present invention in two sets is that it can improve stability.

[0080] The present invention takes a wrist joint rehabilitation treatment device as Figure 6 an example for illustration. The prior art wrist joint rehabilitation treatment device has a first functional part 500, a second functional part 600 and a rotating shaft 700. The first functional part 500 is sleeved on the palm of the human body, and the second functional part 600 is sleeved on the human arm. The first functional part 500 and the second functional part 600 are respectively movably assembled on the rotating shaft 700, the first functional part 500 and the second functional part 600 rotate relative to the rotating shaft 700, and the first functional part 500 and the second functional part 600 are also connected by a spring 800 or other deformation devices. The first functional part 500 performs a bending movement centered on the rotating shaft 700.

[0081] The steps of this embodiment are as follows:

[0082] Step 1: Scan the wrist joint rehabilitation treatment device, generate a personalized bending performance test fixture model matching the wrist joint rehabilitation treatment device, and print the personalized bending performance test fixture by 3D printing;

[0083] Step 2: Fix the first functional part 500 of the wrist joint rehabilitation treatment device to the first fixing part 300 of the personalized bending performance test fixture, fix the second functional part 600 to the second fixing part 400, and then fix the driving wheel part 223 to the rotating shaft 700;

[0084] Step 3: Apply force to the personalized bending performance test fixture through the linear force application mechanism, so that the moving shaft 221 performs a reciprocating linear motion up and down. The connecting cross bar 222 follows the moving shaft 221 to perform a reciprocating linear motion up and down. Thus, the driving wheel part 223, the second fixing part 400 and the first functional part 500 perform an arc motion with the fixed wheel part 212 as the center and the connecting block 224 as the radius, so as to realize the bending action of the wrist joint rehabilitation treatment device driven by the personalized bending performance test fixture, and at the same time obtain the bending mechanical properties of the wrist joint rehabilitation treatment device.

[0085] It should be noted that the angle at which the driving wheel part 223 is lifted or lowered is controlled by the moving distance of the moving shaft 221 to adapt to actual specific requirements.

[0086] The personalized bending performance test fixture of the present invention is not limited to wrist joint rehabilitation treatment appliances, and is applicable to all orthopedic rehabilitation treatment appliances involving the relative opening and closing mode of two similar functional parts. Such as elbow joint rehabilitation appliances, knee joint rehabilitation appliances, hip joint rehabilitation appliances, ankle joint rehabilitation appliances, upper and lower jaw bone rehabilitation appliances, finger joint rehabilitation appliances, toe joint rehabilitation appliances or cervical vertebra rehabilitation appliances, etc. By fixing these orthopedic rehabilitation treatment appliances with the personalized bending performance test fixture of the present invention, the bending performance test can be realized on the equipment with linear pressure application.

[0087] The method for testing the bending mechanical properties of orthopedic rehabilitation treatment appliances with the 3D printing personalized bending performance test fixture can obtain the personalized bending performance test fixture, and through this personalized bending performance test fixture, the linear force application is applied to the orthopedic rehabilitation treatment appliances to test the bending performance of the orthopedic rehabilitation treatment appliances, making up for the deficiency in the prior art that the bending performance test of orthopedic rehabilitation treatment appliances cannot be carried out.

[0088] Example 3.

[0089] A 3D printing personalized bending performance test fixture, which is the personalized bending performance test fixture of Example 2.

[0090] The 3D printing personalized bending performance test fixture can fix the orthopedic rehabilitation treatment appliances for orthopedic correction or rehabilitation of the bending part, and test the bending mechanical properties of the orthopedic rehabilitation treatment appliances through linear force application, making up for the deficiency in the prior art that the bending performance test of orthopedic rehabilitation treatment appliances cannot be carried out.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the protection scope of the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the essence and scope of the technical solutions of the present invention.

Claims

1. A method for testing the bending mechanical properties of a corrective rehabilitation device based on a 3D-printed personalized bending performance test fixture, characterized in that, It is carried out through the following steps: Step 1: Scan the orthopedic rehabilitation treatment device, generate a personalized bending performance test fixture model matching the orthopedic rehabilitation treatment device, and print the personalized bending performance test fixture by 3D printing; Step 2: Fix the orthopedic rehabilitation treatment device to the personalized bending performance test fixture; Step 3: Apply force to the personalized bending performance test fixture through a linear force application mechanism. The orthopedic rehabilitation treatment device performs a bending action driven by the personalized bending performance test fixture, and at the same time, the bending mechanical properties of the orthopedic rehabilitation treatment device are obtained; The orthopedic rehabilitation treatment device has a first functional part, a rotating shaft, and a second functional part. The first functional part and the second functional part are respectively movably assembled on the rotating shaft, and the first functional part and the second functional part rotate relative to the rotating shaft; The personalized bending performance test fixture is provided with a fixture main body and a bending movement mechanism, and the bending movement mechanism is assembled on the fixture main body; The bending movement mechanism is provided with a fixing device and a bending device. The fixing device is fixedly assembled with the fixture main body, and the bending device is movably assembled on the fixing device and the fixture main body; The fixing device is provided with a fixing plate and a fixed wheel part. The fixing plate is fixedly assembled on the fixture main body, and the fixing plate is also movably assembled with the bending device. The fixed wheel part is fixedly assembled at the end of the fixing plate; The bending device is provided with a moving shaft, a connecting cross bar, a moving wheel part, and a connecting block. The moving shaft is movably sleeved on the fixing plate, the connecting cross bar is fixedly assembled with the moving shaft, the moving wheel part is movably assembled on the connecting cross bar, and the two ends of the connecting block are respectively movably assembled with the fixed wheel part and the moving wheel part correspondingly. The moving wheel part is fixed to the rotating shaft of the orthopedic rehabilitation treatment device; The moving wheel part makes a reciprocating circular arc movement with the fixed wheel part as the center of the circle and the connecting block as the radius; The moving shaft makes a reciprocating linear movement up and down along the fixing plate; The fixing plate is provided with a plate body and a collar. The collar is fixedly connected to the plate body. The moving shaft is movably sleeved on the collar. The plate body is fixedly assembled on the fixture main body, and the fixed wheel part is fixedly assembled on the plate body and away from the collar; The connecting cross bar is provided with a groove body, and the moving wheel part is movably sleeved in the groove body.

2. The method for testing the bending mechanical properties of a corrective rehabilitation device based on the 3D printing personalized bending performance test fixture according to claim 1, wherein: The orthopedic rehabilitation treatment device is an elbow joint rehabilitation device, a wrist joint rehabilitation device, a knee joint rehabilitation device, a hip joint rehabilitation device, an ankle joint rehabilitation device, an upper and lower jaw bone rehabilitation device, a finger joint rehabilitation device, a toe joint rehabilitation device, or a cervical vertebra rehabilitation device.

3. The method for testing the bending mechanical properties of a corrective rehabilitation device based on the 3D printing personalized bending performance test fixture according to claim 2, characterized in that: The personalized bending performance test fixture is further provided with a first fixing part matching the first functional part and a second fixing part matching the second functional part. The first fixing part is fixedly assembled on the fixing plate, and the second fixing part is fixedly assembled with the moving wheel part; The first fixing part is fixed to the first functional part; The second fixing part is fixed to the second functional part.

4. The method for testing the bending mechanical properties of a corrective rehabilitation device based on the 3D printing personalized bending performance test fixture according to claim 3, characterized in that: The fixture main body is provided with a base, and the plate body is fixedly assembled on the base; The fixture main body is further provided with an assembly rod fixedly assembled with the linear force application mechanism. The assembly rod is fixedly assembled with one end of the moving shaft; Both the fixing device and the bending device are provided in two sets.

5. The method for testing the bending mechanical properties of a corrective rehabilitation device based on the 3D printing personalized bending performance test fixture according to claim 4, characterized in that: The linear force application mechanism is an MTS pressure testing machine.

6. The method for testing the bending mechanical properties of a correction and rehabilitation treatment device based on the 3D printing personalized bending performance test fixture according to claim 1, wherein: The bending mechanical properties are bending life performance, ultimate force-bearing performance, and fixed-point force performance.

7. A 3D printing personalized bending performance test fixture, characterized in that: The personalized bending performance test fixture according to any one of claims 1 to 6.

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