Transparent acrylic crown for left upper limb support in coronary surgery

Abstract

The utility model relates to the field of upper limbs supporting plate discloses a transparent acrylic left upper limb supporting plate for coronary artery operation, including mounting panel, the lower surface fixed mounting of mounting panel has L shaped board, the threaded mounting of L shaped board has the adjusting peg, the upper surface one end fixed connection of mounting panel has fixed supporting plate, the upper surface other end swing joint of mounting panel has movable supporting plate, movable supporting plate left side fixed connection has telescopic plate, movable supporting plate bottom both sides fixed mounting has the card post, movable supporting plate right side fixed connection has the extension plate, the movable installation of extension plate has the pressure relief ball, mounting panel one side fixed connection has second spring and baffle and rotates and is equipped with the rotating plate, the fixed installation of rotating plate has third spring and fixed clamp, in the utility model, through the sliding of telescopic plate and sliding slot and the positioning fixing of card post and round groove, the length of left upper limb of adaptation different height patient is avoided the body to hang in the air or to curl up, promotes the support comfort degree.

Description

Technical Field

[0001] This utility model relates to the field of upper limb support plates, and more particularly to a transparent acrylic left upper limb support plate for coronary artery surgery. Background Technology

[0002] In coronary intervention surgery, the patient's left upper limb usually undertakes key functions such as blood pressure monitoring, intravenous infusion, and blood oxygen saturation detection. Its stable support and standardized management are crucial to the safety of the operation.

[0003] The existing left upper limb splints have many shortcomings: First, most splints are integrated fixed structures with no adjustable length, making it difficult to adapt to the limb length of patients of different heights. This results in some patients' limbs being suspended or excessively curled up, leading to poor comfort and agitation. Second, the fluid circuit guides are mostly placed naturally, resulting in insufficient flexibility in fluid circuit management and a tendency for tubing to become tangled or compressed.

[0004] Therefore, those skilled in the art have provided a transparent acrylic left upper limb support for coronary artery surgery to address the problems mentioned in the background art. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a transparent acrylic left upper limb support plate for coronary artery surgery. Through the sliding cooperation of the telescopic plate and the sliding groove, combined with the positioning and fixing of the locking post and the circular groove, the support length of the plate can be flexibly adjusted to adapt to the left upper limb length of patients of different heights, avoiding the limb from being suspended or curled up, and improving support comfort.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A transparent acrylic left upper limb support for coronary artery surgery includes a mounting plate. An L-shaped plate is fixedly mounted on the lower surface of the mounting plate, and an adjusting bolt is threaded onto the L-shaped plate. A fixed support plate is fixedly connected to one end of the upper surface of the mounting plate, and a fixed rod is fixedly connected to the bottom of the fixed support plate. The fixed rod is fixedly connected to the mounting plate. A movable support plate is movably connected to the other end of the upper surface of the mounting plate. A telescopic plate is fixedly connected to the left side of the movable support plate. A memory silicone pad and a restraint strap are fixedly mounted on the fixed support plate, and a memory silicone pad and a restraint strap are fixedly mounted on the movable support plate. The movable tray has guide rods fixedly installed on both sides of its bottom. A first spring is fitted on the outer wall of the guide rod. A locking pin is fixedly connected to one end of the first spring. An extension plate is fixedly connected to the right side of the movable tray. A decompression ball is movably installed on the extension plate. The mounting plate has a rectangular groove and a movable groove. The movable groove is opened in the rectangular groove. A second spring and a baffle are fixedly connected in the movable groove. A rotating plate is movably installed inside the rectangular groove. A guide groove is opened on the upper surface of the rotating plate. A third spring and a fixing clamp are fixedly installed inside the guide groove.

[0008] The above technical solution uses an installation plate as the basic load-bearing frame. An L-shaped plate and adjusting bolts are used to construct an operating table adaptation structure, solving the problems of installation stability and height adaptation. The combination of fixed support plate, movable support plate and telescopic plate achieves length adjustment to adapt to different patient limb sizes. The combination of memory silicone pad and restraint strap improves support comfort and restraint safety. Rotating plate, guide groove and fixing clamp form a flexible fluid management system. Decompression ball provides patients with an emotional release channel and reduces the risk of intraoperative agitation. The synergistic effect of all components comprehensively optimizes the management experience of the left upper limb in coronary artery surgery.

[0009] Furthermore, the L-shaped plate is provided with multiple adjustment holes, the adjustment bolt is installed in the adjustment holes and threadedly connected to the L-shaped plate, the upper surface of the adjustment bolt is fixedly connected with a support plate for fixing, and the bottom of the adjustment bolt is fixedly connected with an adjustment handle;

[0010] Through the above technical solution, the multiple adjustment holes provide the adjustment bolt with multiple height installation position options. With the threaded connection structure, rotating the adjustment handle can drive the adjustment bolt to move up and down along the adjustment holes, thereby flexibly adjusting the overall height of the mounting plate to adapt to the height differences of different models of operating tables. The support plate increases the contact area between the adjustment bolt and the operating table, and its surface anti-slip design further improves the friction resistance, preventing the tray from sliding or shifting during surgery, thus solving the problems of poor adaptability and unstable fixation of traditional tray installation.

[0011] Furthermore, the fixed support plate is semi-arc-shaped, a sliding groove is provided on the right side of the fixed support plate, and the fixed rods are symmetrically fixed at both ends of the bottom of the fixed support plate;

[0012] Through the above technical solution, the semi-circular structure conforms to the physiological curve of the human forearm, maximizing the contact area between the limb and the support plate, reducing local pressure, and laying the foundation for comfortable support. The groove provides a sliding guide channel for the telescopic plate, ensuring the stability and straightness of the movable support plate during adjustment. The symmetrical fixing rods on both sides rigidly connect the fixed support plate and the mounting plate, dispersing the limb pressure on the support plate, avoiding deformation or loosening of the support plate due to long-term use, and improving the load-bearing strength and service life of the overall structure.

[0013] Furthermore, the telescopic plate is installed in the slide groove and slidably connected to the fixed support plate. The memory silicone pad is semi-arc-shaped. Velcro is fixedly connected to the left side of the fixed support plate and the left side of the movable support plate. One end of the constraint strap is adhered to the Velcro.

[0014] Through the above technical solution, the sliding cooperation between the telescopic plate and the slide groove allows the movable tray to move flexibly along the length of the fixed tray, thereby adjusting the overall support length of the tray. This solves the problem that traditional fixed-length trays cannot adapt to patients of different heights. The semi-circular memory silicone pad precisely conforms to the curve of the limb, and the anti-slip texture further enhances the support comfort. The adhesive structure of the restraint strap and Velcro can flexibly adjust the tightness according to the thickness of the patient's limb. It can achieve stable fixation through the elastic restraint strap to prevent limb displacement caused by restlessness during surgery, while avoiding excessive restraint that affects blood circulation, thus balancing safety and practicality.

[0015] Furthermore, the mounting plate has multiple circular grooves on its upper surface, which are arranged symmetrically from left to right. One end of the first spring is fixedly connected to the bottom of the movable support plate, and the locking pins are slidably connected to the mounting plate and the guide rod, respectively.

[0016] Through the above technical solution, multiple circular grooves distributed along the length direction provide multiple positioning points for the locking post, adapting to different length adjustment needs. The guide rod limits the trajectory of the first spring, and the elastic force of the first spring can automatically push the locking post into the corresponding circular groove. Fixing can be completed without additional tools, making operation convenient. Lifting the locking post upwards to compress the spring releases the positioning, facilitating quick adjustment. This solves the problems of cumbersome fixing and insufficient positioning accuracy after adjusting the movable tray, thus improving operational efficiency.

[0017] Furthermore, the extension plate has a through hole, and a limiting plate is movably installed at the bottom of the extension plate. The diameter of the limiting plate is larger than the diameter of the through hole, and an elastic rope is fixedly connected to the limiting plate and installed inside the through hole.

[0018] Through the above technical solution, the elastic cord passes through the through hole to suspend the decompression ball below the extension plate. This ensures that the patient can easily hold it with their hand while avoiding the decompression ball occupying support space. Because the diameter of the limiting plate is larger than that of the through hole, it can effectively prevent the elastic cord from coming out of the through hole, ensuring that the decompression ball is firmly installed and preventing it from falling and contaminating the surgical area during the operation. The elasticity of the elastic cord allows the patient to make slight movements when holding and squeezing the decompression ball, improving the comfort of use, while not affecting the overall fixation of the limb, so that the emotional relief function and the support restraint function do not interfere with each other.

[0019] Furthermore, the second spring is installed in the movable groove and fixedly connected to the mounting plate, the baffle is fixedly connected to one end of the second spring, and the baffle is slidably connected to the mounting plate and the rotating plate;

[0020] Through the above technical solution, the elastic force of the second spring always pushes the baffle to move towards the rotating plate. When the rotating plate is adjusted to the target angle, the baffle can automatically insert into the corresponding slot to complete the angle fixation. The operation is simple and efficient. The sliding cooperation between the baffle, the movable slot, and the rotating plate ensures a smooth positioning process and avoids jamming. The locking can be released by manually pulling the baffle to compress the spring. This solves the problem that traditional fixed liquid path tanks cannot adapt to different liquid path directions and improves the flexibility of liquid path management.

[0021] Furthermore, a slot is provided on the right side of the rotating plate, the third spring is installed on both sides of the inner wall of the guide groove and is fixedly connected to the rotating plate, and the fixing clamp is fixedly connected to one end of the third spring;

[0022] Through the above technical solution, the elastic force of the third spring pushes the two fixing clamps closer to each other, forming a clamping force on the infusion tube. This ensures that the tube is firmly fixed and prevents displacement or entanglement during the operation, while also avoiding damage to the tube due to excessive clamping force. The infusion tube extends naturally along the guide groove, further reducing the pressure on the tube. Combined with the transparent material, it enables visual observation of the fluid circuit patency, improving the safety and convenience of fluid circuit management.

[0023] This utility model has the following beneficial effects:

[0024] 1. The present invention proposes a transparent acrylic left upper limb support plate for coronary artery surgery. Through the sliding cooperation of the telescopic plate and the sliding groove, combined with the positioning and fixing of the locking column and the circular groove, the support length of the support plate can be flexibly adjusted to adapt to the left upper limb length of patients of different heights, avoid the limb being suspended or curled up, and improve the support comfort.

[0025] 2. The present invention proposes a transparent acrylic left upper limb support for coronary artery surgery. The fixing clip in the guide groove can accurately fix the infusion tube through the elastic force of the third spring, which can flexibly manage the fluid circuit and avoid the tube from being tangled or compressed. Combined with the transparent material, it realizes the visual management of the fluid circuit. Attached Figure Description

[0026] Figure 1 This is an axonometric drawing of a transparent acrylic coronary artery surgery left upper limb support plate proposed in this utility model;

[0027] Figure 2 for Figure 1 A symmetrical diagram;

[0028] Figure 3 for Figure 1 Enlarged view of point A in the middle;

[0029] Figure 4 for Figure 2 Enlarged view at point B in the middle;

[0030] Figure 5This is a structural diagram of the extension plate of a transparent acrylic coronary artery surgery left upper limb support proposed in this utility model.

[0031] Explanation of reference numerals in the attached figures:

[0032] 1. Mounting plate; 2. L-shaped plate; 3. Adjustment hole; 4. Adjustment bolt; 5. Support plate; 6. Adjustment handle; 7. Fixed support plate; 8. Slide groove; 9. Fixed rod; 10. Movable support plate; 11. Telescopic plate; 12. Memory silicone pad; 13. Velcro; 14. Restraint strap; 15. Circular groove; 16. Guide rod; 17. First spring; 18. Locking post; 19. Extension plate; 20. Through hole; 21. Limiting plate; 22. Elastic rope; 23. Decompression ball; 24. Rectangular groove; 25. Movable groove; 26. Second spring; 27. Baffle; 28. Rotating plate; 29. ​​Locking groove; 30. Guide groove; 31. Third spring; 32. Fixed clamp. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of specific embodiments. Obviously, the described specific embodiments are only a part of the specific embodiments of the present invention, and not all of them. Based on the specific embodiments of the present invention, all other specific embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Reference Figures 1-3 This utility model provides a specific implementation method:

[0035] A transparent acrylic left upper limb support for coronary artery surgery includes a mounting plate 1. An L-shaped plate 2 is fixedly mounted on the lower surface of the mounting plate 1. An adjusting bolt 4 is threaded onto the L-shaped plate 2. By rotating the adjusting handle 6, the adjusting bolt 4 is driven to move upward along the thread until the anti-slip pad on the support plate 5 is tightly pressed against the bottom of the operating table, thus fixing the mounting plate 1. A fixed support plate 7 is fixedly connected to one end of the upper surface of the mounting plate 1. A fixing rod 9 is fixedly connected to the bottom of the fixed support plate 7 and is fixedly connected to the mounting plate 1. A movable support plate 10 is movably connected to the other end of the upper surface of the mounting plate 1. A telescopic plate 11 is fixedly connected to the left side of the movable support plate 10. A memory silicone pad 12 and a restraint strap 14 are fixedly mounted on the fixed support plate 7. A memory silicone pad 12 and a restraint strap 14 are fixedly installed on the plate 10. The semi-circular silicone pad precisely conforms to the physiological curve of the forearm and hand, avoiding pressure sores or numbness in bony prominences such as the elbow and wrist. Depending on the thickness of the patient's limb, the restraint strap 14 on the fixed support plate 7 and the movable support plate 10 is wrapped around the limb and fixed by the Velcro 13 at the end of the restraint strap 14 to the Velcro 13 on the left side of the support plate. Guide rods 16 are fixedly installed on both sides of the bottom of the movable support plate 10. A first spring 17 is fitted on the outer wall of the guide rod 16. One end of the first spring 17 is fixedly connected to a locking post 18. When the locking posts 18 on both sides of the bottom of the movable support plate 10 are lifted upward, the locking posts 18 slide upward along the guide rod 16 and compress the first spring. 17. Disengage the locking post 18 from the circular groove 15 on the mounting plate 1, releasing the position lock of the movable support plate 10. Push the movable support plate 10 to slide left and right along the sliding groove 8 on the right side of the fixed support plate 7. The telescopic plate 11 moves synchronously with the movable support plate 10. When the overall length of the support plate is adapted to the patient's limb, release the locking post 18. The elastic potential energy of the first spring 17 is released, pushing the locking post 18 downward along the guide rod 16 and inserting it into the corresponding circular groove 15, completing the positioning and fixing of the movable support plate 10. An extension plate 19 is fixedly connected to the right side of the movable support plate 10. A decompression ball 23 is movably installed on the extension plate 19. The mounting plate 1 has a rectangular groove 24 and a movable groove 25. The movable groove 25 is opened in the rectangular groove 24. The inner fixed connection of the 5th section includes a second spring 26 and a baffle 27. A rotating plate 28 is movably installed inside the rectangular groove 24. Pulling the baffle 27 rotates the rotating plate 28 to a certain position. Releasing the baffle 27 causes the second spring 26 to push the baffle 27 into the corresponding slot 29, thus fixing the angle of the rotating plate 28. A guide groove 30 is provided on the upper surface of the rotating plate 28. A third spring 31 and a fixing clip 32 are fixedly installed inside the guide groove 30. The third springs 31 on both sides of the inner wall of the guide groove 30 push the fixing clips 32 closer to each other, forming a clamping force on the infusion tube. The transparent mounting plate 1 and the support plate cooperate with the rotating plate 28, allowing medical staff to directly observe the patency of the fluid path in the guide groove 30 without lifting the sterile drape.

[0036] Reference Figures 3-5The L-shaped plate 2 has multiple adjustment holes 3. Adjustment bolts 4 are installed in the adjustment holes 3 and threadedly connected to the L-shaped plate 2. A support plate 5 for fixation is fixedly connected to the upper surface of the adjustment bolt 4, and an adjustment handle 6 is fixedly connected to the bottom of the adjustment bolt 4. The multiple adjustment holes 3 provide the adjustment bolt 4 with multiple height installation position options. Combined with the threaded connection structure, rotating the adjustment handle 6 moves the adjustment bolt 4 up and down along the adjustment holes 3, thereby flexibly adjusting the overall height of the mounting plate 1 to adapt to the height differences of different operating table models. The support plate 5 increases the contact area between the adjustment bolt 4 and the operating table, and its anti-slip design further enhances friction resistance, preventing the support plate from sliding or shifting during surgery. This solves the problems of poor adaptability and unstable fixation of traditional support plates. The fixed support plate 7 is semi-circular, with a groove 8 on its right side. Fixing rods 9 are symmetrically fixed at both ends of the bottom of the fixed support plate 7. The semi-circular structure conforms to the physiological curve of the human forearm, maximizing the contact area between the limb and the support plate, reducing local pressure, and laying the foundation for comfortable support. The groove 8 provides a sliding guide channel for the telescopic plate 11, ensuring the stability and straightness of the movable support plate 10 during adjustment. The symmetrical fixing rods 9 rigidly connect the fixed support plate 7 to the mounting plate 1, distributing the limb pressure on the support plate and preventing deformation or loosening due to long-term use, thus improving the overall structural strength and service life. The telescopic plate 11 is installed in the groove 8 and slidably connected to the fixed support plate 7. The memory silicone pad 12 is semi-circular. Both the left side of the fixed support plate 7 and the left side of the movable support plate 10 are fixedly connected with Velcro 13. One end of the restraint strap 14 is adhered to the Velcro 13. The sliding cooperation between the telescopic plate 11 and the slide groove 8 allows the movable support plate 10 to move flexibly along the length of the fixed support plate 7, thereby adjusting the overall support length of the support plate. This solves the problem that traditional fixed-length support plates cannot adapt to patients of different heights. The semi-circular memory silicone pad 12 precisely conforms to the curve of the limb, and the anti-slip texture further enhances the support comfort. The adhesion structure between the restraint strap 14 and the Velcro 13 can flexibly adjust the tightness according to the thickness of the patient's limb. It can achieve stable fixation through the elastic restraint strap 14 to prevent limb displacement caused by restlessness during surgery, while avoiding excessive restraint that affects blood circulation, thus balancing safety and practicality. In terms of usability, the upper surface of the mounting plate 1 has multiple circular grooves 15, which are symmetrically arranged from left to right. One end of the first spring 17 is fixedly connected to the bottom of the movable support plate 10. The locking pins 18 are slidably connected to the mounting plate 1 and the guide rod 16 respectively. The multiple circular grooves 15 distributed along the length direction provide multiple positioning points for the locking pins 18 to adapt to different length adjustment needs. The guide rod 16 limits the trajectory of the first spring 17. The elastic force of the first spring 17 can automatically push the locking pins 18 into the corresponding circular grooves 15, which can be fixed without additional tools. The operation is convenient. Lifting the locking pins 18 upwards to compress the spring releases the positioning, which is convenient for quick adjustment. This solves the problems of cumbersome fixing and insufficient positioning accuracy after the movable support plate 10 is adjusted, and improves the operation efficiency.An extension plate 19 has a through hole 20. A limiting plate 21 is movably installed at the bottom of the extension plate 19. The diameter of the limiting plate 21 is larger than the diameter of the through hole 20. An elastic rope 22 is fixedly connected to the limiting plate 21 and installed inside the through hole 20. The elastic rope 22 passes through the through hole 20 and suspends the decompression ball 23 below the extension plate 19. This ensures that the patient can easily hold the ball while preventing the decompression ball 23 from occupying support space. Because the diameter of the limiting plate 21 is larger than that of the through hole 20, it effectively prevents the elastic rope 22 from coming out of the through hole 20, ensuring... The decompression ball 23 is securely installed to prevent it from falling and contaminating the surgical area during surgery. The elasticity of the elastic cord 22 allows the patient to make slight movements while holding and squeezing the decompression ball 23, improving comfort without affecting the overall fixation of the limb. This ensures that the emotional relief function and the support and restraint function do not interfere with each other. The second spring 26 is installed in the movable groove 25 and fixedly connected to the mounting plate 1. The baffle 27 is fixedly connected to one end of the second spring 26 and is slidably connected to the mounting plate 1 and the rotating plate 28. The elastic force of the second spring 26 always pushes the baffle. Plate 27 moves towards rotating plate 28. When rotating plate 28 is adjusted to the target angle, baffle 27 can automatically insert into the corresponding slot 29 to fix the angle. The operation is simple and efficient. The sliding cooperation between baffle 27, movable slot 25, and rotating plate 28 ensures a smooth positioning process and avoids jamming. The locking can be released by manually pulling baffle 27 to compress the spring. This solves the problem that traditional fixed liquid path tanks cannot adapt to different liquid path directions, improving the flexibility of liquid path management. A slot 29 is provided on the right side of rotating plate 28, and a third spring 3... 1. Installed on both sides of the inner wall of the guide groove 30 and fixedly connected to the rotating plate 28, the fixing clamp 32 is fixedly connected to one end of the third spring 31. The elastic force of the third spring 31 pushes the fixing clamps 32 on both sides closer together, forming a clamping force on the infusion tube. This ensures that the tube is firmly fixed, preventing displacement or entanglement during surgery, and also avoids damage to the tube due to excessive clamping force. The infusion tube extends naturally along the guide groove 30, further reducing pressure on the tube. Combined with the transparent material, it allows for visual observation of the fluid circuit patency, improving the safety and convenience of fluid circuit management.

[0037] Working principle: First, attach the L-shaped plate 2 on the lower surface of the mounting plate 1 to the left edge of the operating table. Based on the width and edge structure of the operating table, rotate the adjusting handle 6 to drive the adjusting bolt 4 upwards along the thread until the anti-slip pad on the support plate 5 is tightly fitted to the bottom of the operating table, thus fixing the mounting plate 1. Then, based on the extension length of the patient's left upper limb from the elbow to the fingertip, lift the locking posts 18 on both sides of the bottom of the movable support plate 10 upwards. The locking posts 18 slide upwards along the guide rod 16 and compress the first spring 17, causing the locking posts 18 to... 8. Disengage from the circular groove 15 on the mounting plate 1, release the position lock of the movable support plate 10, and push the movable support plate 10 to slide left and right along the sliding groove 8 on the right side of the fixed support plate 7. The telescopic plate 11 moves synchronously with the movable support plate 10. When the overall length of the support plate is adapted to the patient's limb, release the locking post 18, the elastic potential energy of the first spring 17 is released, and push the locking post 18 to slide down along the guide rod 16 and insert into the corresponding circular groove 15, completing the positioning and fixation of the movable support plate 10. Place the patient's left upper limb on the fixed support plate 7 and the movable support plate 10. On the memory silicone pad 12 of the movable support plate 10, the semi-circular silicone pad precisely conforms to the physiological curve of the forearm and hand, avoiding pressure sores or numbness in bony prominences such as the elbow and wrist. Depending on the thickness of the patient's limb, the restraint straps 14 on the fixed support plate 7 and the movable support plate 10 are wrapped around the limb and secured by the Velcro 13 at the end of the restraint straps 14 to the Velcro 13 on the left side of the support plate. Pulling the baffle 27 and rotating the rotating plate 28 to a certain position, releasing the baffle 27, the second spring 26 pushes the baffle 27. Insert the corresponding card slot 29 to fix the angle of the rotating plate 28. Place the intravenous infusion tube into the guide groove 30 on the rotating plate 28. The third spring 31 on both sides of the inner wall of the guide groove 30 pushes the fixing clamp 32 closer to each other, forming a clamping force on the infusion tube. The transparent mounting plate 1 and the support plate cooperate with the rotating plate 28, allowing medical staff to directly observe the patency of the fluid path in the guide groove 30 without lifting the sterile drape. Patients can release tension by squeezing and rubbing the decompression ball 23, indirectly reducing the risk of agitation.

[0038] The following points should be noted in this article:

[0039] 1. The accompanying drawings of the embodiments disclosed herein only relate to the structures involved in the embodiments disclosed herein; other structures can be referred to in a general design.

[0040] 2. Where there is no conflict, the embodiments of this disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing specific embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A transparent acrylic left upper limb support for coronary artery surgery, comprising a mounting plate (1), characterized in that: An L-shaped plate (2) is fixedly installed on the lower surface of the mounting plate (1). An adjusting bolt (4) is threaded onto the L-shaped plate (2). A fixed support plate (7) is fixedly connected to one end of the upper surface of the mounting plate (1). A fixed rod (9) is fixedly connected to the bottom of the fixed support plate (7). The fixed rod (9) is fixedly connected to the mounting plate (1). A movable support plate (10) is movably connected to the other end of the upper surface of the mounting plate (1). A telescopic plate (11) is fixedly connected to the left side of the movable support plate (10). A memory silicone pad (12) and a constraint strap (14) are fixedly installed on the fixed support plate (7). The memory silicone pad (12) and the constraint strap (14) are fixedly installed on the movable support plate (10). Guide rods are fixedly installed on both sides of the bottom of the movable support plate (10). (16) The outer wall of the guide rod (16) is fitted with a first spring (17), and one end of the first spring (17) is fixedly connected to a locking post (18). The right side of the movable support plate (10) is fixedly connected to an extension plate (19), and a decompression ball (23) is movably installed on the extension plate (19). The mounting plate (1) has a rectangular groove (24) and a movable groove (25). The movable groove (25) is opened in the rectangular groove (24). A second spring (26) and a baffle (27) are fixedly connected in the movable groove (25). A rotating plate (28) is movably installed inside the rectangular groove (24). A guide groove (30) is opened on the upper surface of the rotating plate (28). A third spring (31) and a fixing clamp (32) are fixedly installed inside the guide groove (30).

2. The transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The L-shaped plate (2) has multiple adjustment holes (3), the adjustment bolt (4) is installed in the adjustment hole (3) and threadedly connected to the L-shaped plate (2), the upper surface of the adjustment bolt (4) is fixedly connected to a support plate (5) for fixing, and the bottom of the adjustment bolt (4) is fixedly connected to an adjustment handle (6).

3. The transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The fixed support plate (7) is semi-arc-shaped, and a sliding groove (8) is provided on the right side of the fixed support plate (7). The fixed rod (9) is symmetrically fixed at both ends of the bottom of the fixed support plate (7).

4. The transparent acrylic left upper limb support for coronary artery surgery according to claim 3, characterized in that: The telescopic plate (11) is installed in the slide groove (8) and slidably connected to the fixed support plate (7). The memory silicone pad (12) is semi-arc-shaped. The left side of the fixed support plate (7) and the left side of the movable support plate (10) are both fixedly connected with Velcro (13). One end of the constraint band (14) is adhered to the Velcro (13).

5. A transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The mounting plate (1) has multiple circular grooves (15) on its upper surface. The circular grooves (15) are arranged symmetrically on the left and right. One end of the first spring (17) is fixedly connected to the bottom of the movable support plate (10). The locking pin (18) is slidably connected to the mounting plate (1) and the guide rod (16) respectively.

6. A transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The extension plate (19) has a through hole (20), and a limiting plate (21) is movably installed at the bottom of the extension plate (19). The diameter of the limiting plate (21) is larger than the diameter of the through hole (20). An elastic rope (22) is fixedly connected to the limiting plate (21), and the elastic rope (22) is installed in the through hole (20).

7. A transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The second spring (26) is installed in the movable groove (25) and fixedly connected to the mounting plate (1). The baffle (27) is fixedly connected to one end of the second spring (26). The baffle (27) is slidably connected to the mounting plate (1) and the rotating plate (28).

8. A transparent acrylic left upper limb support for coronary artery surgery according to claim 1, characterized in that: The rotating plate (28) has a slot (29) on its right side. The third spring (31) is installed on both sides of the inner wall of the guide groove (30) and is fixedly connected to the rotating plate (28). The fixing clamp (32) is fixedly connected to one end of the third spring (31).

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