Clinical trial tracking device and method based on cloud storage

Abstract

The present invention discloses a clinical trial tracking device and method based on cloud storage, which relates to the technical field of clinical trials. It includes an armrest, and a processor is arranged on the top of the armrest. For this clinical trial tracking device and method based on cloud storage, by arranging a processor, an armrest and a winding box, the output end of the third servo motor drives the second threaded rod to rotate, so that the limiting plate moves to an appropriate position. Medical staff place the armrest on the surface of the arm, and then pull the second fixing component. The second fixing component pulls out the elastic band to make the first threaded rod rotate, so that the detection plate moves until one side of the detection plate contacts one side of the limiting plate. At this time, the elastic band cannot be pulled out any further. At this time, the length of the elastic band pulled out just enables the second fixing component to cooperate with the first fixing component to fix the armrest on the arm of the medical staff, so that this tracking device can adjust the length that the elastic band can be pulled out according to different medical staff, making this device convenient for fixing.

Description

Technical Field

[0001] The present invention relates to the technical field of clinical trials, and particularly to a clinical trial tracking device and method based on cloud storage. Background Art

[0002] Clinical trials are a complex trial system, involving multiple aspects such as pathology, pharmacology, ethics, and statistics. A clinical trial refers to any systematic study of a drug in humans (patients or healthy volunteers) to confirm or reveal the effects, adverse reactions, and / or absorption, distribution, metabolism, and excretion of the test drug, with the aim of determining the efficacy and safety of the test drug. However, during the existing clinical trial tracking, the tracking device cannot move with medical staff to input medical reports and medical information. Summary of the Invention

[0003] Aiming at the deficiencies of the prior art, the present invention provides a clinical trial tracking device and method based on cloud storage, which solves the problems raised in the above background art.

[0004] To achieve the above objectives, the present invention is realized through the following technical solutions: A clinical trial tracking device based on cloud storage includes an armrest. A processor is provided on the top of the armrest. A storage slot is opened inside the processor. A first lead screw is rotatably connected to the bottom of the inner cavity of the storage slot. A second lead screw is rotatably connected to the bottom of the inner cavity of the storage slot and on one side of the first lead screw. A first pulley is sleeved on the outer side of the first lead screw. A second pulley is sleeved on the outer side of the second lead screw. The first pulley and the second pulley are connected by a belt drive. Sliders are threadedly connected to the outer sides of both the first lead screw and the second lead screw. A push plate is provided between the two sliders. A rotating table is provided on the top of the push plate. A camera is rotatably connected to the middle of the rotating table. A fixing slot is opened inside the rotating table. A second servo motor is provided inside the fixing slot. The output end of the second servo motor is connected to one end of the camera. A through slot is opened inside the processor and above the storage slot. A storage slot is opened inside the processor and on one side of the through slot. A support spring is provided on one side of the inner cavity of the storage slot. A moving block is provided on one side of the support spring. One end of the moving block is provided with a baffle. One end of the baffle extends into the through slot. Second electromagnets are provided on both the upper and lower sides of the moving block and above and below the baffle. First electromagnets are provided on both the upper and lower sides of the inner cavity of the storage slot and above and below the baffle. A transmission slot is opened inside the processor and below the storage slot. A first servo motor is provided inside the transmission slot. The output end of the first servo motor is connected to the bottom end of the first lead screw.

[0005] Optionally, a drawer slot is provided inside the processor and on one side of the storage slot, and a storage drawer is slidably connected inside the drawer slot.

[0006] Optionally, a controller is inlaid on the top of the processor.

[0007] Optionally, two winding boxes are provided on one side of the armrest, two fixing boxes are provided on the other side of the armrest, first fixing components are provided at the bottoms of the two fixing boxes, a winding roller is rotatably connected to one side of the inner cavity of each winding box, an elastic band is wound around the outer side of each winding roller, and one end of each elastic band extends below the corresponding winding box and is provided with a second fixing component.

[0008] Optionally, a torsion spring is sleeved on the outer side of one end of each winding roller and inside the corresponding winding box.

[0009] Optionally, a detection box is provided on one side of each winding box, one end of the winding roller extends into the detection box and is sleeved with a first gear, a first threaded rod is rotatably connected to one side of the inner cavity of each detection box, a second gear is sleeved on the outer side of one end of each first threaded rod, the second gears are meshed with the first gears, and a detection plate is threadedly connected to the outer side of each first threaded rod.

[0010] Optionally, a third servo motor is provided on one side of the inner cavity of each detection box and at one end of the first threaded rod, a second threaded rod is provided at the output end of each third servo motor, a limiting plate is threadedly connected to the outer side of each second threaded rod, one side of each limiting plate is slidably connected to one side of the inner cavity of the corresponding detection box, and one side of each detection plate is slidably connected to the other side of the inner cavity of the corresponding detection box.

[0011] A clinical trial tracking method based on cloud storage, characterized by comprising the following steps:

[0012] S1: First, medical staff start the first servo motor, the first electromagnet, and the second electromagnet through the controller, so that a mutually repulsive magnetic field is generated between the first electromagnet and the second electromagnet, thereby causing the moving block to drive the baffle to move outward from the through groove, causing the output end of the first servo motor to drive the first lead screw to rotate, causing the first lead screw to drive the first pulley to rotate, and the first pulley drives the second pulley to rotate through the belt, causing the second lead screw to rotate, and then causing the slider to drive the push plate to move upward, causing the push plate to push the turntable upward, causing the camera to move upward to above the processor. Then, the output end of the second servo motor drives the camera to rotate, so that the camera captures the facial image of the medical staff. The received face information is compared with the pre-stored face information of the medical staff through the identity recognition unit inside the controller. If the comparison is consistent, the identity recognition unit allows the person to be logged in and retrieves the user data matching the pre-stored face information. If the comparison is inconsistent, the identity recognition unit rejects the person to be logged in. At this time, the third servo motor is controlled to operate according to the retrieved user data matching the pre-stored face information. At this time, the output end of the third servo motor drives the second threaded rod to rotate, causing the limit plate to move to an appropriate position;

[0013] S2: The medical staff places the armrest on the surface of the arm, and then pulls the second fixing component. At this time, the second fixing component pulls out the elastic band, causing the winding roller to rotate, causing the winding roller to drive the second gear to rotate through the first gear, causing the first threaded rod to rotate, causing the detection plate to move until one side of the detection plate contacts one side of the limit plate. At this time, the elastic band cannot be pulled out further. At this time, the length of the elastic band pulled out just enables the second fixing component to cooperate with the first fixing component to fix the armrest on the arm of the medical staff;

[0014] S3: The medical staff can scan the medical report of the clinical trial subject through the camera, and the text information in the scanned image is recognized and extracted by the image extraction unit set inside the controller, and then the medical information is sent to the cloud storage unit in the server. The cloud storage unit receives the medical data of each clinical trial subject during the clinical trial, updates the ethical documents, and regularly distributes the medical data to multiple computing platforms to calculate the pathological change process during the clinical trial;

[0015] S4: During the clinical trial tracking, the medical staff can scan the face recognition information of the clinical trial subject through the storage groove. The received face information is compared with the pre-stored face information of the personnel through the identity recognition unit inside the controller, so as to retrieve the clinical trial subject data matching the pre-stored face information of the clinical trial subject, and the medical data of the clinical trial subject can be viewed through the controller;

[0016] S5: During the use of this device, when the camera is not in use, the output end of the first servo motor drives the first lead screw to rotate reversely, causing the first lead screw to drive the first pulley to rotate reversely. The first pulley drives the second pulley to rotate reversely through the belt, causing the second lead screw to rotate reversely. As a result, the slider drives the push plate to move downward, causing the push plate to drive the turntable to move downward, causing the camera to move downward into the storage slot. Then, the second electromagnet and the first electromagnet are turned off, causing the repulsive magnetic field between the second electromagnet and the first electromagnet to disappear. The support spring pushes the moving block to move, causing the moving block to push one end of the baffle into the through slot to close the through slot. When in need of use, follow the steps in S1 to make the camera enter the working position. Medical staff can take the clinical trial tracking supplies placed inside the drawer slot.

[0017] S6: When this device is not in use, by unlocking the first fixing component and the second fixing component, the torsion spring drives the winding roller to rotate back to its original position, causing the elastic belt to wind around the outside of the winding roller. The rotation of the winding roller drives the first gear to rotate, causing the first gear to drive the second gear to rotate, causing the first threaded rod to drive the detection plate to move back to its initial position. At the same time, the output end of the third servo motor drives the second threaded rod to rotate back to its original position, causing the second threaded rod to drive the limiting plate to move back to its initial position, so that the armrest can be removed from the medical staff's arm.

[0018] The present invention provides a clinical trial tracking device and method based on cloud storage, having the following beneficial effects:

[0019] 1. For this clinical trial tracking device and method based on cloud storage, by providing a processor, an armrest, and a winding box, medical staff perform portrait authentication through the camera and the controller. By retrieving user data that matches the face information of the medical staff, the third servo motor is controlled to operate. At this time, the output end of the third servo motor drives the second threaded rod to rotate, causing the limiting plate to move to an appropriate position. The medical staff places the armrest on the surface of the arm, and then pulls the second fixing component. At this time, the second fixing component pulls out the elastic belt, causing the first threaded rod to rotate, causing the detection plate to move until one side of the detection plate contacts one side of the limiting plate. At this time, the elastic belt cannot be pulled out any further. The length of the elastic belt pulled out at this time just enables the second fixing component and the first fixing component to cooperate to fix the armrest on the medical staff's arm, ensuring that the length of the elastic belt pulled out by the same medical staff is consistent each time, facilitating the fixation of the armrest. At the same time, by adjusting the position of the limiting plate, the length of the elastic belt that can be pulled out can be controlled, enabling this tracking device to adjust the length of the elastic belt that can be pulled out according to different medical staff, making this device convenient for fixation as the medical staff moves.

[0020] 2. The clinical trial tracking device and method based on cloud storage are provided with a camera, a baffle and a storage slot, enabling medical staff to scan a face image through the camera for secure login. At the same time, the medical report and medical information can be scanned through the camera, so as to extract the medical information of the clinical trial subject, and then the medical information can be sent to the cloud storage unit in the server for storage. When the camera is not in use, the first servo motor is started to move the camera down into the storage slot. Then, the second electromagnet and the first electromagnet are turned off, causing the support spring to push the moving block to move, and the moving block to push one end of the baffle into the through slot to close the through slot, protecting the camera from being damaged by collision when moving with the medical staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the internal structure of the present invention;

[0022] Figure 2 Schematic diagram of the front view structure of the present invention;

[0023] Figure 3 Schematic diagram of the side view structure of the present invention;

[0024] Figure 4 Schematic diagram of the internal structure of the winding box and the detection box of the present invention;

[0025] Figure 5 Schematic diagram of the structure of the first fixing component of the present invention;

[0026] Figure 6 For the present invention Figure 1 Enlarged view of part A;

[0027] Figure 7 For the present invention Figure 1 Enlarged view of part B;

[0028] Figure 8 For the present invention Figure 1 Enlarged view of part C;

[0029] Figure 9 For the present invention Figure 1 Enlarged view of part D.

[0030] In the figure: 1, armrest; 2, storage slot; 3, first lead screw; 4, slider; 5, transmission slot; 6, first servo motor; 7, first pulley; 8, second lead screw; 9, second pulley; 10, push plate; 11, detection box; 12, rotating table; 13, fixed slot; 14, second servo motor; 15, camera; 16, storage slot; 17, support spring; 18, moving block; 19, baffle; 20, through slot; 21, first electromagnet; 22, second electromagnet; 23, drawer slot; 24, storage drawer; 25, processor; 26, controller; 30, fixed box; 31, first fixing component; 32, winding box; 33, winding roller; 34, torsion spring; 35, elastic band; 36, second fixing component; 37, first gear; 38, first threaded rod; 39, second gear; 40, third servo motor; 41, second threaded rod; 42, limiting plate; 43, detection plate. Detailed implementation manner

[0031] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0032] Please refer to Figures 1 to 9, the present invention provides a technical solution: a clinical trial tracking device based on cloud storage, including an armrest 1. A processor 25 is provided at the top of the armrest 1. A storage slot 2 is opened inside the processor 25. A first lead screw 3 is rotatably connected to the bottom of the inner cavity of the storage slot 2. A second lead screw 8 is rotatably connected to the bottom of the inner cavity of the storage slot 2 and on one side of the first lead screw 3. A first pulley 7 is sleeved on the outer side of the first lead screw 3. A second pulley 9 is sleeved on the outer side of the second lead screw 8. The first pulley 7 and the second pulley 9 are connected by a belt drive. Sliders 4 are threadedly connected to the outer sides of both the first lead screw 3 and the second lead screw 8. A push plate 10 is arranged between the two sliders 4. A rotating table 12 is provided at the top of the push plate 10. A camera 15 is rotatably connected to the middle of the rotating table 12. A fixing slot 13 is opened inside the rotating table 12. A second servo motor 14 is arranged inside the fixing slot 13. The output end of the second servo motor 14 is connected to one end of the camera 15. A through slot 20 is opened inside the processor 25 and above the storage slot 2. A storage slot 16 is opened inside the processor 25 and on one side of the through slot 20. A support spring 17 is arranged on one side of the inner cavity of the storage slot 16. A moving block 18 is arranged on one side of the support spring 17. One end of the moving block 18 is provided with a baffle 19. One end of the baffle 19 extends into the through slot 20. Second electromagnets 22 are arranged on both the upper and lower sides of the moving block 18 and above and below the baffle 19. First electromagnets 21 are arranged on both the upper and lower sides of the inner cavity of the storage slot 16 and above and below the baffle 19. A transmission slot 5 is opened inside the processor 25 and below the storage slot 2. A first servo motor 6 is arranged inside the transmission slot 5. The output end of the first servo motor 6 is connected to the bottom end of the first lead screw 3.

[0033] Wherein, a drawer slot 23 is opened inside the processor 25 and on one side of the storage slot 2. A storage drawer 24 is slidably connected inside the drawer slot 23, which is convenient for medical staff to take clinical trial tracking supplies at any time.

[0034] Wherein, a controller 26 is embedded at the top of the processor 25 for controlling the operation of the device.

[0035] Wherein, two winding boxes 32 are arranged on one side of the armrest 1. Two fixing boxes 30 are arranged on the other side of the armrest 1. First fixing components 31 are arranged at the bottoms of the two fixing boxes 30. Winding rollers 33 are rotatably connected to one side of the inner cavities of the winding boxes 32. Elastic bands 35 are wound around the outer sides of the winding rollers 33. One ends of the elastic bands 35 extend below the winding boxes 32 and are provided with second fixing components 36, which is convenient for fixing the device on the arm of medical staff.

[0036] Wherein, a torsion spring 34 is sleeved on the outer side of one end of the winding roller 33 and inside the winding box 32, which is convenient for rewinding the elastic band 35 on the surface of the winding roller 33.

[0037] Among them, a detection box 11 is provided on one side of the coiling box 32. One end of the coiling roller 33 extends into the detection box 11 and is sleeved with a first gear 37. On one side of the inner cavity of the detection box 11, a first threaded rod 38 is rotatably connected. On the outer side of one end of the first threaded rod 38, a second gear 39 is sleeved. The second gears 39 are all meshed with the first gear 37. A detection plate 43 is threadedly connected to the outer side of the first threaded rod 38. When the coiling roller 33 rotates, it can drive the first threaded rod 38 to rotate.

[0038] Among them, a third servo motor 40 is provided on one side of the inner cavity of the detection box 11 and at one end of the first threaded rod 38. A second threaded rod 41 is provided at the output end of the third servo motor 40. A limiting plate 42 is threadedly connected to the outer side of the second threaded rod 41. One side of the limiting plate 42 is slidably connected to one side of the inner cavity of the detection box 11. One side of the detection plate 43 is slidably connected to the other side of the inner cavity of the detection box 11, and the number of rotations of the coiling roller 33 can be controlled.

[0039] A clinical trial tracking method based on cloud storage includes the following steps:

[0040] S1: First, medical staff start the first servo motor 6, the first electromagnet 21 and the second electromagnet 22 through the controller 26, so that a mutually repulsive magnetic field is generated between the first electromagnet 21 and the second electromagnet 22, so that the moving block 18 drives the baffle 19 to move outward from the through groove 20, so that the output end of the first servo motor 6 drives the first lead screw 3 to rotate, so that the first lead screw 3 drives the first pulley 7 to rotate. The first pulley 7 drives the second pulley 9 to rotate through the belt, so that the second lead screw 8 rotates, and then the slider 4 drives the push plate 10 to move upward, so that the push plate 10 pushes the turntable 12 to move upward, so that the camera 15 moves upward above the processor 25. Then, the output end of the second servo motor 14 drives the camera 15 to rotate, so that the camera 15 captures the facial image of the medical staff. The received face information is compared with the pre-stored face information of the medical staff through the identity recognition unit inside the controller 26. If the comparison is consistent, the identity recognition unit allows the person to be logged in and retrieves the user data matching the pre-stored face information. If the comparison is inconsistent, the identity recognition unit rejects the person to be logged in. At this time, the third servo motor 40 is controlled to operate according to the retrieved user data matching the pre-stored face information. At this time, the output end of the third servo motor 40 drives the second threaded rod 41 to rotate, so that the limiting plate 42 moves to an appropriate position;

[0041] S2: Medical staff place the armrest 1 on the surface of the arm, then pull the second fixing component 36. At this time, the second fixing component 36 pulls out the elastic band 35, causing the winding roller 33 to rotate. The winding roller 33 drives the second gear 39 to rotate through the first gear 37, causing the first threaded rod 38 to rotate and the detection plate 43 to move until one side of the detection plate 43 contacts one side of the limit plate 42. At this time, the elastic band 35 cannot be pulled out any further. The length of the elastic band 35 pulled out at this time just enables the second fixing component 36 to cooperate with the first fixing component 31 to fix the armrest 1 on the medical staff's arm;

[0042] S3: Medical staff can scan the medical reports of clinical trial subjects through the camera 15, identify and extract the text information in the scanned images through the image extraction unit set inside the controller 26, and then send the medical information to the cloud storage unit in the server. The cloud storage unit receives the medical data of each clinical trial subject during the clinical trial process, updates the ethical documents, and regularly distributes the medical data to multiple computing platforms to calculate the pathological change process during the clinical trial;

[0043] S4: During clinical trial tracking, medical staff can scan the face recognition information of clinical trial subjects through the storage groove 16, and compare the received face information with the pre-stored personnel face information through the identity recognition unit inside the controller 26, so as to retrieve the clinical trial subject data matching the pre-stored clinical trial subject face information. The medical data of the clinical trial subject can be viewed through the controller 26;

[0044] S5: During the use of this device, when the camera 15 is not in use, the output end of the first servo motor 6 drives the first lead screw 3 to rotate in the reverse direction, causing the first lead screw 3 to drive the first pulley 7 to rotate in the reverse direction. The first pulley 7 drives the second pulley 9 to rotate in the reverse direction through the belt, causing the second lead screw 8 to rotate in the reverse direction. Further, the slider 4 drives the push plate 10 to move downward, causing the push plate 10 to drive the turntable 12 to move downward, causing the camera 15 to move downward into the storage slot 2. Then, the second electromagnet 22 and the first electromagnet 21 are turned off, causing the repulsive magnetic field between the second electromagnet 22 and the first electromagnet 21 to disappear. The support spring 17 pushes the moving block 18 to move, causing the moving block 18 to push one end of the baffle 19 to insert into the through slot 20 to seal the through slot 20. When in need of use, following the steps in S1, the camera 15 can be moved to the working position, and medical staff can take the clinical trial tracking supplies placed inside the drawer slot 23;

[0045] S6: When the device is not in use, by unlocking the first fixing component 31 and the second fixing component 36, the torsion spring 34 drives the winding roller 33 to rotate in the reset direction, so that the elastic band 35 is wound around the outer side of the winding roller 33. The rotation of the winding roller 33 drives the first gear 37 to rotate, so that the first gear 37 drives the second gear 39 to rotate, so that the first threaded rod 38 drives the detection plate 43 to move to the initial position. At the same time, the output end of the third servo motor 40 drives the second threaded rod 41 to rotate in the reset direction, so that the second threaded rod 41 drives the limiting plate 42 to move to the initial position, so that the arm support 1 can be removed from the medical staff's arm.

[0046] The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A clinical trial tracking device based on cloud storage, including an armrest (1), characterized in that: A processor (25) is provided at the top of the armrest (1). A storage slot (2) is formed inside the processor (25). A first lead screw (3) is rotatably connected to the bottom of the inner cavity of the storage slot (2). A second lead screw (8) is rotatably connected to the bottom of the inner cavity of the storage slot (2) and on one side of the first lead screw (3). A first pulley (7) is sleeved on the outer side of the first lead screw (3). A second pulley (9) is sleeved on the outer side of the second lead screw (8). The first pulley (7) and the second pulley (9) are connected by belt drive. Sliders (4) are threadedly connected to the outer sides of both the first lead screw (3) and the second lead screw (8). A push plate (10) is arranged between the two sliders (4). A rotating table (12) is provided at the top of the push plate (10). A camera (15) is rotatably connected to the middle of the rotating table (12). A fixing slot (13) is formed inside the rotating table (12). A second servo motor (14) is arranged inside the fixing slot (13). The output end of the second servo motor (14) is connected to one end of the camera (15). A through slot (20) is formed inside the processor (25) and above the storage slot (2). A storage slot (16) is formed inside the processor (25) and on one side of the through slot (20). A support spring (17) is arranged on one side of the inner cavity of the storage slot (16). A moving block (18) is arranged on one side of the support spring (17). A baffle (19) is arranged at one end of the moving block (18). One end of the baffle (19) extends into the through slot (20). Second electromagnets (22) are arranged on both the upper and lower sides of one side of the moving block (18) and above and below the baffle (19). First electromagnets (21) are arranged on both the upper and lower sides of one side of the inner cavity of the storage slot (16) and above and below the baffle (19). A transmission slot (5) is formed inside the processor (25) and below the storage slot (2). A first servo motor (6) is arranged inside the inner cavity of the transmission slot (5). The output end of the first servo motor (6) is connected to the bottom end of the first lead screw (3); A drawer slot (23) is formed inside the processor (25) and on one side of the storage slot (2). A storage drawer (24) is slidably connected inside the drawer slot (23); A controller (26) is inlaid at the top of the processor (25); Two winding boxes (32) are arranged on one side of the armrest (1). Two fixing boxes (30) are arranged on the other side of the armrest (1). First fixing components (31) are arranged at the bottoms of the two fixing boxes (30). Winding rollers (33) are rotatably connected to one side of the inner cavities of the winding boxes (32). Elastic bands (35) are wound around the outer sides of the winding rollers (33). One ends of the elastic bands (35) extend below the winding boxes (32) and are provided with second fixing components (36); A torsion spring (34) is sleeved on the outer side of one end of the winding roller (33) and inside the winding box (32).

2. The clinical trial tracking device based on cloud storage according to claim 1, characterized in that: On one side of the winding box (32), a detection box (11) is provided. One end of the winding roller (33) extends into the detection box (11) and is sleeved with a first gear (37). On one side of the inner cavity of the detection box (11), a first threaded rod (38) is rotatably connected. On the outer side of one end of the first threaded rod (38), a second gear (39) is sleeved. The second gears (39) are meshed with the first gear (37). On the outer side of the first threaded rod (38), a detection plate (43) is threadedly connected.

3. The clinical trial tracking device based on cloud storage according to claim 2, characterized in that: On one side of the inner cavity of the detection box (11) and at one end of the first threaded rod (38), a third servo motor (40) is provided. On the output end of the third servo motor (40), a second threaded rod (41) is provided. On the outer side of the second threaded rod (41), a limiting plate (42) is threadedly connected. One side of the limiting plate (42) is slidably connected to one side of the inner cavity of the detection box (11). One side of the detection plate (43) is slidably connected to the other side of the inner cavity of the detection box (11).

4. A clinical trial tracking method based on cloud storage, characterized in that: It includes the following steps: S1: First, medical staff start the first servo motor (6), the first electromagnet (21) and the second electromagnet (22) through the controller (26), so that a mutually repulsive magnetic field is generated between the first electromagnet (21) and the second electromagnet (22), so that the moving block (18) drives the baffle (19) to move outward from the through groove (20), so that the output end of the first servo motor (6) drives the first lead screw (3) to rotate, so that the first lead screw (3) drives the first pulley (7) to rotate. The first pulley (7) drives the second pulley (9) to rotate through the belt, so that the second lead screw (8) rotates, and then the slider (4) drives the push plate (10) to move upward, so that the push plate (10) pushes the turntable (12) to move upward, so that the camera (15) moves upward to above the processor (25). Then, the output end of the second servo motor (14) drives the camera (15) to rotate, so that the camera (15) captures the facial image of the medical staff. The received face information is compared with the pre-stored face information of the medical staff through the identification unit inside the controller (26). If the comparison is consistent, the identification unit allows the person to be logged in and retrieves the user data matching the pre-stored face information. If the comparison is inconsistent, the identification unit rejects the person to be logged in. At this time, the third servo motor (40) is controlled to operate according to the retrieved user data matching the pre-stored face information. At this time, the output end of the third servo motor (40) drives the second threaded rod (41) to rotate, so that the limiting plate (42) moves to an appropriate position; S2: Medical staff place the armrest (1) on the surface of the arm, and then pull the second fixing component (36). At this time, the second fixing component (36) pulls out the elastic belt (35), causing the winding roller (33) to rotate. The winding roller (33) drives the second gear (39) to rotate through the first gear (37), causing the first threaded rod (38) to rotate, and causing the detection plate (43) to move until one side of the detection plate (43) contacts one side of the limit plate (42). At this time, the elastic belt (35) cannot be pulled out any further. The length of the elastic belt (35) pulled out at this time exactly enables the second fixing component (36) to cooperate with the first fixing component (31) to fix the armrest (1) on the medical staff's arm; S3: Medical staff can scan the medical reports of clinical trial subjects through the camera (15), identify and extract the text information in the scanned images through the image extraction unit set inside the controller (26), and then send the medical information to the cloud storage unit in the server. The cloud storage unit receives the medical data of each clinical trial subject during the clinical trial process, updates the ethical documents, and regularly distributes the medical data to multiple computing platforms to calculate the pathological change process during the clinical trial; S4: During clinical trial tracking, medical staff can scan the face recognition information of clinical trial subjects through the storage slot (16), and compare the received face information with the pre-stored personnel face information through the identity recognition unit inside the controller (26), so as to retrieve the clinical trial subject data matching the pre-stored clinical trial subject face information. The medical data of the clinical trial subjects can be viewed through the controller (26); S5: During the use of this device, when the camera (15) is not in use, the output end of the first servo motor (6) drives the first lead screw (3) to rotate in the reverse direction, causing the first lead screw (3) to drive the first pulley (7) to rotate in the reverse direction. The first pulley (7) drives the second pulley (9) to rotate in the reverse direction through the belt, causing the second lead screw (8) to rotate in the reverse direction. Furthermore, the slider (4) drives the push plate (10) to move downward, causing the push plate (10) to drive the turntable (12) to move downward, causing the camera (15) to move downward into the storage slot (2). Then, the second electromagnet (22) and the first electromagnet (21) are turned off, causing the repulsive magnetic field between the second electromagnet (22) and the first electromagnet (21) to disappear. The support spring (17) pushes the moving block (18) to move, causing the moving block (18) to push one end of the baffle (19) into the through slot (20) to close the through slot (20). When in need of use, following the steps in S1, the camera (15) can be moved to the working position, and medical staff can take the clinical trial tracking supplies placed inside the drawer slot (23); S6: When the device is not in use, by unlocking the first fixing component (31) and the second fixing component (36), the torsion spring (34) drives the winding roller (33) to rotate in the reset direction, so that the elastic band (35) is wound around the outside of the winding roller (33). The rotation of the winding roller (33) drives the first gear (37) to rotate, so that the first gear (37) drives the second gear (39) to rotate, so that the first threaded rod (38) drives the detection plate (43) to move to the initial position. At the same time, the output end of the third servo motor (40) drives the second threaded rod (41) to rotate in the reset direction, so that the second threaded rod (41) drives the limiting plate (42) to move to the initial position, so that the armrest (1) can be removed from the medical staff's arm.

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