Device and method for testing biomimetic degradation performance of biodegradable magnesium alloy material

Abstract

The invention discloses a biomimetic degradation performance testing device and testing method for a biodegradable magnesium alloy material, and particularly relates to the technical field of biomimetic degradation. The biomimetic degradation performance testing device comprises a testing box, a vibration mechanism is arranged in the testing box, and a pressure applying mechanism is arranged above the vibration mechanism; the pressure applying mechanism drives a to-be-tested material to collide with the pressure applying mechanism through the vibration mechanism, and the vibration mechanism and the pressure applying mechanism are used for carrying out mechanical test on the bionic magnesium alloy material; a power box is arranged outside the test box, a circulating mechanism is arranged in the power box and used for carrying out dynamic circulating test on simulated body fluid, the vibration mechanism comprises a first motor, the first motor is arranged outside the test box, the output end of the first motor is fixedly connected with a rotating shaft, and the rotating shaft is connected with the power box. The vibration mechanism and the pressure applying mechanism can simulate the influence of dynamic load and stress in the body, and the circulation mechanism can simulate the dynamic flow of liquid in the body.

Description

Technical Field

[0001] The invention relates to the technical field of bionic degradation materials, in particular to a biodegradable magnesium alloy material bionic degradation performance testing device and a testing method. Background Art

[0002] The biomimetic degradation performance test device for biodegradable magnesium alloy materials is a special equipment used to simulate the in vivo environment to test the degradation performance of magnesium alloy materials. The device can simulate body fluid environment, temperature, pressure and other conditions, as well as the dynamic changes of materials in the body, so as to evaluate key indicators such as the degradation rate and degradation products of the materials.

[0003] The human body fluid environment is complex and changeable. In the human body, magnesium alloy implants will be affected by dynamic loads and stresses. However, existing testing devices can only perform static tests and cannot simulate the impact of dynamic environments on the degradation of magnesium alloys. In addition, the body fluids in the human body flow dynamically, and the flow rate is not constant. Existing testing equipment usually performs tests in a static liquid environment, which makes it difficult to simulate the real in vivo environment. Summary of the invention

[0004] The purpose of the present invention is to provide a biodegradable magnesium alloy material bionic degradation performance testing device and testing method to solve the problem mentioned in the above background technology that it is difficult to accurately obtain real test data in a static environment.

[0005] The present invention can be implemented through the following technical scheme: a biodegradable magnesium alloy material bionic degradation performance testing device comprises a test box, a vibration mechanism is arranged inside the test box, and a pressure mechanism is arranged above the vibration mechanism; the pressure mechanism drives the material to be tested and the pressure mechanism to collide through the vibration mechanism, and the vibration mechanism and the pressure mechanism are used to perform mechanical tests on the bionic magnesium alloy material; a power box is arranged outside the test box, and a circulation mechanism is arranged inside the power box, and the circulation mechanism is used to perform dynamic circulation tests on simulated body fluids.

[0006] A further technical improvement of the present invention is that the vibration mechanism includes a first motor, the first motor is arranged outside the test box, the output end of the first motor is fixedly connected to a rotating shaft, the rotating shaft is divided into two sections, cams are arranged at both ends of the two sections of the rotating shaft close to each other, the two cams are fixedly connected, a push rod is commonly connected between the two cams, the end of the push rod away from the cam is rotatably connected to a slider, a slide cylinder is arranged in the test box, the slider is slidably connected in the slide cylinder, an installation box is arranged above the slide cylinder, the bottom of the installation box is fixedly connected to a connecting cylinder, and the connecting cylinder and the slider cooperate.

[0007] A further technical improvement of the present invention is that a slide bar is provided at the bottom of the installation box, a fixed cylinder is provided at the bottom of the test box, the slide bar is slidably connected in the fixed cylinder, a first spring is provided in the fixed cylinder, and the first spring is connected to the slide bar.

[0008] A further technical improvement of the present invention is that the pressure mechanism includes an installation box, a positioning rod is slidably connected inside the installation box, the positioning rod extends to the outside of the installation box and is slidably connected to a racket tube, a second spring is arranged inside the racket tube, and the second spring is connected to the positioning rod.

[0009] A further technical improvement of the present invention is that: a threaded rod is threadedly connected to the installation box, the threaded rod extends into the installation box and is rotatably connected to a connecting plate, and the connecting plate is rotatably connected to the positioning rod.

[0010] A further technical improvement of the present invention is that a positioning mechanism is provided on the installation box, the installation box is used to contain magnesium alloy material, the positioning mechanism is used to fix the magnesium alloy material, the positioning mechanism includes a positioning plate, a limiting groove is provided on the inner wall of the installation box, and the positioning plate and the limiting groove are slidably connected.

[0011] A further technical improvement of the present invention is that: a positioning cylinder and an installation cylinder are respectively provided on the positioning plate, the positioning cylinder is provided on both sides of the positioning plate, the connecting cylinder is provided in the middle of the two positioning cylinders, a pull rod is slidably connected in the positioning cylinder, a fixing rod is fixedly connected to the pull rod, the fixing rod is slidably connected in the installation cylinder, and a third spring is provided in the installation cylinder, the third spring is connected to the fixing rod, a positioning cylinder is provided in the installation box, and the pull rod cooperates with the positioning cylinder.

[0012] A further technical improvement of the present invention is that the power box and the test box are fixedly connected by a support frame, the circulation mechanism includes a second motor, the second motor is arranged inside the power box, the output end of the second motor is fixedly connected to a mounting plate, a transmission disk is arranged below the mounting plate, the transmission disk is rotatably connected to the power box, a connecting column is fixedly connected between the mounting plate and the transmission disk, and an arc block is arranged at the edge of the transmission disk.

[0013] A further technical improvement of the present invention is that a turntable is rotatably connected to the transmission disk, a transmission rod is rotatably connected to the turntable, a strip groove is provided on the transmission disk, a moving block is slidably connected in the strip groove, a semi-arc block is provided at the end of the moving block, a hose is provided inside the power box, the hose corresponds to the arc block and the moving block, a third motor is installed on the mounting plate, and the output end of the third motor is fixedly connected to the turntable.

[0014] The invention also includes a testing method for a biodegradable magnesium alloy material biomimetic degradation performance testing device, the method comprising the following steps:

[0015] Step 1: Open the test box, put the bionic degradable magnesium alloy material to be tested into the installation box, then fix the bionic degradable magnesium alloy material in the installation box through the positioning mechanism, and then add simulated body fluid;

[0016] Step 2: Then start the vibration mechanism, which drives the installation box to vibrate up and down, thereby simulating the dynamic environment of the bionic degradable magnesium alloy material in the body. At the same time, in the process of the installation box being driven up and down by the vibration mechanism, the bionic degradable magnesium alloy material contacts the pressure mechanism, and the pressure mechanism applies pressure to the bionic degradable magnesium alloy material, thereby simulating the force condition in the body;

[0017] Step 3: While the vibration mechanism and the pressure mechanism are in action, the circulation mechanism in the power box is started, and the circulation mechanism circulates the liquid in the test box, thereby simulating the phenomenon of liquid circulation in the body.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The cooperation of the vibration mechanism and the pressure mechanism can simulate the actual stress conditions of the bionic degradable materials in the human body, so as to obtain more realistic test values. Compared with the traditional static environmental test of bionic degradable materials, it is closer to the real environment, and the vibration mechanism can simultaneously drive the pressure mechanism to realize the pressure test of the bionic degradable materials while vibrating.

[0020] 2. The circulation mechanism is used to simulate the phenomenon of the circulation of body fluids in the human body. In addition, the circulation mechanism can also make the liquid change dynamically, and by changing the flow rate of the liquid, it can more realistically simulate the flow of body fluids in the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0022] Figure 1 It is a schematic diagram of the external structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the vibration mechanism of the present invention;

[0024] Figure 3 It is a schematic diagram of the vibration mechanism of the present invention;

[0025] Figure 4 It is a schematic diagram of the positioning mechanism of the present invention;

[0026] Figure 5 For the present invention Figure 1 A partial enlarged view of the middle A;

[0027] Figure 6 It is a schematic diagram of the pressure applying mechanism of the present invention;

[0028] Figure 7 It is a partial structural schematic diagram of the circulation mechanism of the present invention;

[0029] Figure 8 It is a schematic diagram of the circulation mechanism of the present invention.

[0030] In the figure: 1, test box; 2, vibration mechanism; 21, first motor; 22, rotating shaft; 23, cam; 24, push rod; 25, slider; 26, connecting tube; 27, fixing tube; 28, first spring; 29, slide rod; 3, pressure mechanism; 31, installation box; 32, threaded rod; 33, connecting plate; 34, positioning rod; 35, clapping tube; 36, second spring; 4, installation box; 5, positioning mechanism; 51, positioning plate; 52, pull rod; 53, positioning tube; 54, installation tube; 55, third spring; 56, fixing rod; 57, limiting tube; 6, support frame; 7, power box; 8, circulation mechanism; 81, second motor; 82, installation plate; 83, third motor; 84, turntable; 85, transmission disk; 86, transmission rod; 87, moving block; 88, arc block; 89, connecting column. DETAILED DESCRIPTION

[0031] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation methods, structures, features and effects of the present invention are described in detail below in conjunction with the accompanying drawings and preferred embodiments.

[0032] See also Figure 1-8 As shown, the present invention provides a biomimetic degradation performance testing device for biodegradable magnesium alloy materials, comprising a test box 1, wherein a vibration mechanism 2 is arranged inside the test box 1, and a pressure mechanism 3 is arranged above the vibration mechanism 2; the pressure mechanism 3 drives the material to be tested and the pressure mechanism 3 to collide through the vibration mechanism 2, and the vibration mechanism 2 and the pressure mechanism 3 are used for performing a mechanical test on the biomimetic magnesium alloy material; a power box 7 is arranged outside the test box 1, and a circulation mechanism 8 is arranged inside the power box 7, and the circulation mechanism 8 is used for performing a dynamic circulation test on the simulated body fluid.

[0033] See also Figure 3As shown, the vibration mechanism 2 includes a first motor 21, which is arranged outside the test box 1, and the output end of the first motor 21 is fixedly connected to a rotating shaft 22, and the rotating shaft 22 is divided into two sections. Cams 23 are arranged at both ends of the two sections of the rotating shaft 22 close to each other, and the two cams 23 are fixedly connected, and a push rod 24 is commonly connected between the two cams 23. The end of the push rod 24 away from the cam 23 is rotatably connected to a slider 25, and a slide cylinder is arranged in the test box 1, and the slider 25 is slidably connected in the slide cylinder, and an installation box 4 is arranged above the slide cylinder, and a connecting cylinder 26 is fixedly connected to the bottom of the installation box 4, and the connecting cylinder 26 cooperates with the slider 25.

[0034] See also Figure 2-3 As shown, a slide bar 29 is provided at the bottom of the installation box 4, and a fixed cylinder 27 is provided at the bottom of the test box 1. The slide bar 29 is slidably connected in the fixed cylinder 27. A first spring 28 is provided in the fixed cylinder 27, and the first spring 28 is connected to the slide bar 29.

[0035] The vibration mechanism 2 is used to simulate the dynamic environment of the bionic degradable material in the body, so as to more accurately test the degradation of the bionic degradable material in the body. The action process of the vibration mechanism 2 is to first start the first motor 21, and the first motor 21 further drives the rotating shaft 22 to rotate, and the cam 23 on the rotating shaft 22 rotates synchronously, and the push rod 24 set on the cam 23 rotates thereby. With the action of the push rod 24, the slider 25 connected to it is driven to move in the slide cylinder. With the movement of the slider 25, it collides with the connecting cylinder 26 and the installation box 4 which are also in the slide cylinder. Due to the cooperation of the fixed cylinder 27, the first spring 28 and the slide rod 29, the installation box 4 is subjected to the elastic force of the first spring 28 and vibrates up and down, thereby driving the bionic degradable material in the installation box 4 to vibrate synchronously up and down.

[0036] See also Figure 3 , 6 As shown, the pressure mechanism 3 includes a mounting box 31, a positioning rod 34 is slidably connected inside the mounting box 31, the positioning rod 34 extends to the outside of the mounting box 31 and is slidably connected to a racket 35, a second spring 36 is arranged inside the racket 35, the second spring 36 is connected to the positioning rod 34, and the arrangement of the second spring 36 makes the contact between the racket 35 and the bionic degradable material elastic, thereby not damaging the structure of the bionic degradable material.

[0037] The pressure mechanism 3 is located just above the installation box 4. When the vibration mechanism 2 drives the installation box 4 to rise, the bionic degradable material in the installation box 4 collides with the positioning cylinder 53 in the pressure mechanism 3, thereby simulating the stress condition of the bionic degradable material in the human body, and then more realistically simulating the dynamic environment in the body, thereby improving the accuracy of the test data.

[0038] See also Figure 6 As shown, a threaded rod 32 is threadedly connected to the installation box 31, and the threaded rod 32 extends into the installation box 31 and is rotatably connected to a connecting plate 33. The connecting plate 33 is rotatably connected to a positioning rod 34. The threaded rod 32 and the connecting plate 33 are used to synchronously adjust the distance between the racket tube 35 and the bionic degradable material. The closer the distance, the bionic degradable material rises by the same distance. Because the moving distance of the second spring 36 increases, the greater the elastic force of the second spring 36 that needs to be overcome, and therefore the greater the collision force on the bionic degradable material, thereby simulating the mechanical properties of the bionic degradable material under different pressures.

[0039] See also Figure 4 As shown, a positioning mechanism 5 is provided on the installation box 4, the installation box 4 is used to contain magnesium alloy materials, the positioning mechanism 5 is used to fix the magnesium alloy materials, the positioning mechanism 5 includes a positioning plate 51, and a limiting groove is provided on the inner wall of the installation box 4, and the positioning plate 51 and the limiting groove are slidably connected.

[0040] See also Figure 4 , 5 As shown, the positioning plate 51 is respectively provided with a positioning cylinder 53 and a mounting cylinder 54, the positioning cylinder 53 is arranged on both sides of the positioning plate 51, the mounting cylinder 54 is arranged in the middle of the two positioning cylinders 53, a pull rod 52 is slidably connected in the positioning cylinder 53, a fixing rod 56 is fixedly connected to the pull rod 52, the fixing rod 56 is slidably connected in the mounting cylinder 54, and a third spring 55 is arranged in the mounting cylinder 54, the third spring 55 is connected to the fixing rod 56, a limiting cylinder 57 is arranged in the mounting box 4, the pull rod 52 and the limiting cylinder 57 cooperate.

[0041] The positioning mechanism 5 is used to fix the biomimetic degradable material on the installation box 4. The action process of the positioning mechanism 5 is to push the pull rod 52 to drive the positioning plate 51 connected to the pull rod 52 to move until the positioning plate 51 moves to the top of the biomimetic degradable material, and then lift the pull rod 52 upward. The pull rod 52 overcomes the elastic force of the third spring 55 and moves upward. When the pull rod 52 moves to the top of the limit cylinder 57, the pull rod 52 is released, and the pull rod 52 is plugged into the limit cylinder 57 under the elastic force of the third spring 55.

[0042] See also Figure 7 , 8As shown, the power box 7 and the test box 1 are fixedly connected via a support frame 6, the circulation mechanism 8 includes a second motor 81, the second motor 81 is arranged inside the power box 7, the output end of the second motor 81 is fixedly connected with a mounting plate 82, a transmission disk 85 is arranged below the mounting plate 82, the transmission disk 85 is rotatably connected to the power box 7, a connecting column 89 is fixedly connected between the mounting plate 82 and the transmission disk 85, and an arc block 88 is arranged at the edge of the transmission disk 85.

[0043] See also Figure 7 , 8 As shown, the transmission disk 85 is rotatably connected to a turntable 84, and the turntable 84 is rotatably connected to a transmission rod 86. A strip groove is provided on the transmission disk 85, and a moving block 87 is slidably connected in the strip groove. A semi-arc block is provided at the end of the moving block 87. A hose 9 is provided inside the power box 7, and the hose 9 corresponds to the arc block 88 and the moving block 87. A third motor 83 is installed on the mounting plate 82, and the output end of the third motor 83 is fixedly connected to the turntable 84.

[0044] The circulation mechanism 8 is used to simulate the phenomenon of the circulation of body fluids in the human body. In addition, the circulation mechanism 8 can also make the liquid change dynamically, and by changing the flow rate of the liquid, it can more realistically simulate the flow of body fluids in the body.

[0045] The principle and operation process of the circulation mechanism 8 are as follows: first, the second motor 81 is started, and the second motor 81 further drives the mounting plate 82 fixedly connected thereto to rotate, and at the same time, the mounting plate 82 drives the transmission disk 85 to rotate through the connecting column 89, and the arc block 88 arranged on the transmission disk 85 continuously squeezes the outer wall of the hose 9, so that negative pressure is generated in the hose 9, and the liquid in the test box 1 is sucked in through one end of the hose 9 through the negative pressure, and then flows back into the test box 1 through the other end of the hose 9, thereby completing the circulation process, and at the same time, the third motor 83 is started, and the third motor 83 further drives the rotating disk 84 to rotate, and the rotation of the rotating disk 84 further drives the transmission rod 86 rotatably connected thereto to rotate, and as the transmission rod 86 rotates, the moving block 87 rotatably connected thereto is driven to move in the strip groove, and the semi-circular block at the end of the moving block 87 contacts with the hose 9 and squeezes the hose 9, and the contact degree between the moving block 87 and the hose 9 is adjusted by the movement amplitude of the moving block 87, thereby changing the size of the negative pressure in the hose 9, and then changing the flow size of the liquid in the test box 1.

[0046] The invention also includes a testing method for a biodegradable magnesium alloy material biomimetic degradation performance testing device, the method comprising the following steps:

[0047] Step 1: Open the test box 1, put the bionic degradable magnesium alloy material to be tested into the installation box 4, then fix the bionic degradable magnesium alloy material in the installation box 4 through the positioning mechanism 5, and then add simulated body fluid;

[0048] Step 2: Then start the vibration mechanism 2, which drives the installation box 4 to vibrate up and down, thereby simulating the dynamic environment of the bionic degradable magnesium alloy material in the body. At the same time, in the process of the vibration mechanism 2 driving the installation box 4 to move up and down, the bionic degradable magnesium alloy material contacts the pressure mechanism 3, and the pressure mechanism 3 applies pressure to the bionic degradable magnesium alloy material, thereby simulating the force condition in the body;

[0049] Step 3: While the vibration mechanism 2 and the pressure mechanism 3 are in motion, the circulation mechanism 8 in the power box 7 is started, and the circulation mechanism 8 circulates the liquid in the test box 1, thereby simulating the phenomenon of liquid circulation in the body.

[0050] It should be understood that, for the renewal of the simulated body fluid, a liquid inlet and a liquid outlet can also be provided on the installation box 4, and the new simulated body fluid is connected to the liquid inlet through the pipeline, so as to replenish the simulated body fluid in the installation box 4; the simulated body fluid in the installation box 4 can be discharged into the recovery pipeline through the liquid outlet. At the same time, the simulated body fluid can also be heated by a water bath heating device before entering the installation box 4, so that the temperature of the simulated body fluid entering the installation box 4 is relatively constant at 37°C, thereby meeting the temperature environment in the human body.

[0051] In addition, it is understood that there is no limitation on the measurement method of the degradation rate (mainly the weight loss due to hydrogen evolution) and the degradation products. For example, the degradation rate can be determined by weighing the samples before and after the test and according to the ratio of the weight difference to the test time. For example, the test box 1 is set as a closed structure, and a hydrogen sensor is set in the test box 1 to detect the amount of hydrogen evolution; or, the gas in the test box 1 after the reaction is collected, and the amount of hydrogen evolution is obtained by existing gas composition analysis methods.

[0052] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A biodegradable magnesium alloy material bionic degradation performance testing device, comprising a test box (1), characterized in that: A vibration mechanism (2) is arranged inside the test box (1), and a pressure mechanism (3) is arranged above the vibration mechanism (2); The pressure mechanism (3) drives the material to be tested and the pressure mechanism (3) to collide via the vibration mechanism (2), and the vibration mechanism (2) and the pressure mechanism (3) are used to perform mechanical tests on the bionic magnesium alloy material; A power box (7) is arranged outside the test box (1), and a circulation mechanism (8) is arranged inside the power box (7). The circulation mechanism (8) is used to perform a dynamic circulation test on the simulated body fluid.

2. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 1, characterized in that: The vibration mechanism (2) comprises a first motor (21), the first motor (21) is arranged outside the test box (1), the output end of the first motor (21) is fixedly connected to a rotating shaft (22), the rotating shaft (22) is divided into two sections, and cams (23) are arranged at both ends of the two sections of the rotating shaft (22) close to each other, the two cams (23) are fixedly connected, a push rod (24) is commonly connected between the two cams (23), and the end of the push rod (24) away from the cam (23) is rotatably connected to a slider (25), a slide cylinder is arranged in the test box (1), and the slider (25) is slidably connected in the slide cylinder, an installation box (4) is arranged above the slide cylinder, and a connecting cylinder (26) is fixedly connected to the bottom of the installation box (4), and the connecting cylinder (26) and the slider (25) cooperate.

3. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 2, characterized in that: A sliding rod (29) is provided at the bottom of the installation box (4), a fixing tube (27) is provided at the bottom of the test box (1), the sliding rod (29) is slidably connected in the fixing tube (27), a first spring (28) is provided in the fixing tube (27), and the first spring (28) is connected to the sliding rod (29).

4. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 1, characterized in that: The pressure mechanism (3) comprises a mounting box (31), a positioning rod (34) is slidably connected inside the mounting box (31), the positioning rod (34) extends to the outside of the mounting box (31) and is slidably connected to a racket tube (35), a second spring (36) is arranged inside the racket tube (35), and the second spring (36) is connected to the positioning rod (34).

5. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 4, characterized in that: A threaded rod (32) is threadedly connected to the installation box (31), the threaded rod (32) extends into the installation box (31) and is rotatably connected to a connecting plate (33), and the connecting plate (33) and the positioning rod (34) are rotatably connected.

6. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 1, characterized in that: The installation box (4) is provided with a positioning mechanism (5), the installation box (4) is used to contain magnesium alloy material, the positioning mechanism (5) is used to fix the magnesium alloy material, the positioning mechanism (5) comprises a positioning plate (51), a limiting groove is provided on the inner wall of the installation box (4), and the positioning plate (51) is slidably connected to the limiting groove.

7. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 6, characterized in that: The positioning plate (51) is respectively provided with a positioning cylinder (53) and a mounting cylinder (54), the positioning cylinder (53) is arranged on both sides of the positioning plate (51), the mounting cylinder (54) is arranged in the middle of the two positioning cylinders (53), a pull rod (52) is slidably connected in the positioning cylinder (53), a fixing rod (56) is fixedly connected to the pull rod (52), the fixing rod (56) is slidably connected in the mounting cylinder (54), and a third spring (55) is arranged in the mounting cylinder (54), the third spring (55) and the fixing rod (56) are connected, a limiting cylinder (57) is arranged in the mounting box (4), and the pull rod (52) and the limiting cylinder (57) cooperate.

8. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 1, characterized in that: The power box (7) and the test box (1) are fixedly connected via a support frame (6); the circulation mechanism (8) comprises a second motor (81); the second motor (81) is arranged inside the power box (7); an output end of the second motor (81) is fixedly connected to a mounting plate (82); a transmission disk (85) is arranged below the mounting plate (82); the transmission disk (85) is rotatably connected to the power box (7); a connecting column (89) is fixedly connected between the mounting plate (82) and the transmission disk (85); and an arc block (88) is arranged at the edge of the transmission disk (85).

9. The biodegradable magnesium alloy material bionic degradation performance testing device according to claim 8, characterized in that: The transmission disc (85) is rotatably connected to a rotating disc (84), and the rotating disc (84) is rotatably connected to a transmission rod (86). The transmission disc (85) is provided with a strip groove, and a moving block (87) is slidably connected in the strip groove. A semi-arc block is provided at the end of the moving block (87). A hose (9) is provided inside the power box (7), and the hose (9) corresponds to the arc block (88) and the moving block (87). A third motor (83) is installed on the mounting plate (82), and an output end of the third motor (83) is fixedly connected to the rotating disc (84).

10. The testing method of the biodegradable magnesium alloy material bionic degradation performance testing device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: Step 1: Open the test box (1), place the bionic degradable magnesium alloy material to be tested into the installation box (4), then fix the bionic degradable magnesium alloy material in the installation box (4) through the positioning mechanism (5), and then add simulated body fluid; Step 2: Then start the vibration mechanism (2), the vibration mechanism (2) drives the installation box (4) to vibrate up and down, thereby simulating the dynamic environment of the bionic degradable magnesium alloy material in the body. At the same time, in the process of the vibration mechanism (2) driving the installation box (4) to move up and down, the bionic degradable magnesium alloy material contacts the pressure mechanism (3), and the pressure mechanism (3) applies pressure to the bionic degradable magnesium alloy material, thereby simulating the force condition in the body; Step 3: While the vibration mechanism (2) and the pressure mechanism (3) are in operation, the circulation mechanism (8) in the power box (7) is started, and the circulation mechanism (8) circulates the liquid in the test box (1), thereby simulating the phenomenon of liquid circulation in the body.

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