Hand fixing device for infusion

Abstract

The invention belongs to the technical field of medical technology, and particularly relates to a hand fixing device for transfusion, which comprises a limiting assembly, the limiting assembly comprises a placing plate, and a positioning ball, a positioning shaft, a positioning groove, a ring, a spring rope and a limiting block for clamping fingers; the clamping assembly comprises a shifting groove formed in the containing plate, a positioning block used for clamping an arm, a fixing frame, a sliding frame, a clamping plate, a ratchet plate A, a pressing block, a limiting ball, a linkage rod, a ratchet plate B, a pull block, a bolt, a rubber block, a spring A, a clamping block and a torsional spring. The clamping device has the advantages that fingers turned in different directions can be fixed, arms with different diameters can be clamped, and the height of the clamping device can be adjusted.

Description

Technical Field

[0001] The invention belongs to the field of medical technology, and specifically relates to a hand fixing device for infusion. Background Art

[0002] The diseases involved in psychiatry are mainly mental illnesses, which are a group of neurological diseases characterized by disorders in behavior and psychological activities. The results of current research believe that it is mainly due to the interaction of external factors such as family and social environment, and the patient's own physiological genetic factors, neurochemical factors and other internal factors, resulting in psychological activities, behaviors, and nervous system dysfunction as the main characteristics of the disease. It includes neurasthenia, hysteria, anxiety, obsessive-compulsive disorder, phobia, depressive neurosis, hypochondriasis, etc. When nursing and infusing psychiatric patients, colleagues need to fix the patient's hands to prevent needle slippage and needle movement, thereby reducing harm to the patient.

[0003] However, due to the different weights of existing patients, some patients have less obvious blood vessels on the back of their hands, and can only receive acupuncture and infusion in the wrist blood vessels. However, existing hand fixation devices are not easy to limit the position of the fingers according to the different acupuncture positions when fixing the fingers.

[0004] In order to solve the above problems, the present application proposes a hand fixing device for infusion. Summary of the Invention

[0005] To solve the problems raised in the above background technology, the invention provides a hand fixing device for infusion, which can fix fingers that are turned in different directions, clamp arms of different diameters, and adjust the height of the clamping device.

[0006] To achieve the above-mentioned purpose, the invention provides the following technical solutions: a hand fixing device for infusion, comprising a limiting assembly;

[0007] The limiting assembly includes a placement plate and a positioning ball for clamping the finger, a positioning shaft, an adjustment groove, a finger ring, a spring rope and a limiting block;

[0008] The clamping assembly includes a shifting groove provided inside the placement plate and a positioning block for clamping the arm, a fixing frame, a sliding frame, a clamping plate, a ratchet plate A, a pressure block, a limiting ball, a linkage rod, a ratchet plate B, a pulling block, a bolt, a rubber block, a spring A, a clamping block and a torsion spring;

[0009] The lifting assembly includes a bottom plate arranged below the placement plate and a ratchet plate C, a positioning cylinder, a slider, ratchet teeth, a positioning plate and a spring B for lifting.

[0010] A positioning shaft is fixedly connected to the surface of the placement plate, a positioning hole is provided inside the positioning ball, the positioning shaft is inserted into the positioning hole, the positioning shaft is rotatably connected to the positioning ball through a bearing, an adjustment groove is provided inside the positioning ball at a position corresponding to the finger, a spring rope is provided inside the adjustment groove, one end of the spring rope is fixedly connected to the positioning ball, and the end of the spring rope away from the positioning ball is fixedly connected to a finger ring.

[0011] The positioning ball is a hemispherical structure, and the positioning groove passes through the plane of the positioning ball. Two limiting blocks are symmetrically fixedly connected inside each positioning groove.

[0012] A shift groove is provided inside the placement plate, a positioning block is provided inside the shift groove, the positioning block is slidably connected to the placement plate through the shift groove, a fixing groove is provided inside the positioning block, two fixing frames are symmetrically provided inside the fixing groove, the fixing frames are fixedly connected to the positioning block, a sliding frame is sleeved on the surface of each fixing frame, the sliding frame and the fixing frame are slidably connected, and adjacent sides of the two sliding frames are fixedly connected with a splint.

[0013] A ratchet plate A is provided inside each of the fixing frames, and the ratchet plate A is slidably connected to the fixing frame. A ratchet plate B is fixedly connected to the side of the sliding frame facing the teeth of the ratchet plate A, and the ratchet plate B is meshed with the ratchet plate A. A spring A is provided inside the fixing frame, and the two ends of the spring A are fixedly connected to the fixing frame and the ratchet plate A respectively. A positioning groove is provided on the surface of each of the fixing frames, and a pull block is provided inside the positioning groove, and the pull block is fixedly connected to the ratchet plate A.

[0014] A limiting ball is provided inside the fixing groove, and the limiting ball is slidably connected to the fixing groove and the positioning block through the fixing groove. A pressure block is provided above the positioning block, and the pressure block passes through the positioning block and is fixedly connected to the limiting ball. Two linkage rods are symmetrically provided inside the fixing groove, and the opposite sides of the two linkage rods are fixedly connected to the ratchet plate A, and the side of the linkage rod away from the ratchet plate A is in contact with the limiting ball.

[0015] A slide groove is provided inside the placement plate, a bolt is provided inside the slide groove, the bolt is threadedly connected to the positioning block, a rubber block is provided on the surface of the placement plate, and the rubber block is rotatably connected to the bolt.

[0016] A limiting groove is provided inside each torsion spring, and a clamping block is provided inside each limiting groove. The clamping block is rotatably connected to the clamping plate through a rotating shaft. A torsion spring is sleeved on the surface of the rotating shaft, and the two ends of the torsion spring are fixedly connected to the clamping plate and the clamping block respectively.

[0017] Four ratchet plates C are evenly fixedly connected to the side of the bottom plate facing the placement plate, and limiting holes are provided at positions of the placement plate corresponding to the ratchet plates C. The ratchet plate C is slidably connected to the placement plate through the limiting holes, and four positioning cylinders are evenly fixedly connected to the bottom surface of the placement plate, which correspond to the four limiting holes respectively. A slider is slidably connected to the inside of each positioning cylinder, and two sliders on the same side are fixedly connected to the side facing the ratchet plate C with ratchet teeth, and the ratchet teeth are meshed with the ratchet plate C.

[0018] A sliding hole is provided inside the slider, and a positioning plate is provided inside the sliding hole. The positioning plate is slidably connected to the slider through the sliding hole, and the two ends of the positioning plate are fixedly connected to the positioning cylinder. A spring B is provided inside the sliding hole, and the two ends of the spring B are respectively fixedly connected to the positioning plate and the slider.

[0019] Compared with the prior art, the beneficial effects of the invention are as follows: a limit assembly is added to the present application, and the cooperation of the positioning ball and the finger ring can be utilized. When performing an infusion on the back of the hand, the forearm is placed on the surface of the placement plate, the positioning ball is held with the palm of the hand, and the finger is inserted into the corresponding finger ring. When the patient's fingers become numb due to long-term infusion and inactivity, the patient can lift the finger to move. When the finger is lifted, the spring rope will tighten the finger ring due to elastic potential energy, so that the amplitude of the patient's movement is reduced, which not only prevents numbness of the finger, but also prevents needle misalignment caused by a large amplitude of movement. When performing an infusion on the wrist, the finger ring can be rotated to prevent numbness of the finger. Move the positioning ball so that the plane of the positioning ball faces upward, pull the finger ring and rotate it ninety degrees, so that the spring rope passes between the two limit blocks, and then rotate the finger ring back to its original position so that the two limit blocks limit the spring rope. Then place the finger ring on the flat surface of the positioning ball and make the finger ring and the plane of the positioning ball perpendicular. Then place the forearm on the surface of the placement board and insert the finger into the inside of the finger ring. This will achieve the function of limiting the finger when performing an infusion on the wrist or the back of the hand. A clamping component is also added, and the ratchet plate A and the ratchet plate B can be used to cooperate. When the forearm is placed on the surface of the placement board, it will squeeze the pressing block. The limiting ball will move inside the fixed groove, and the two linkage rods will apply force to the two ratchet plates A due to the squeezing, and the two springs A will be compressed. The two ratchet plates A will move away from the ratchet plate B, so that the ratchet plate B and the ratchet plate A are no longer engaged, and the two splints will slide on the surface of the sliding frame until the two splints contact the forearm, thus limiting the forearm. When the forearm is lifted, the force on the pressure block will be released, and the two springs A will push the two ratchet plates A towards the ratchet plate B due to the elastic potential energy, so that the two are engaged with each other, thus limiting the forearm. The two splints are attached to the surface of the forearm due to gravity to prevent the forearm from being squeezed too tightly. The blood circulation is not smooth, and at the same time, a lifting component is added, and the cooperation of the ratchet plate C and the ratchet teeth can be utilized. When the height of the placement plate needs to be adjusted, the placement plate is pulled upward, and the ratchet plate C will slide inside the limiting hole. The slider will slide inside the positioning cylinder due to the engagement of the ratchet teeth and the ratchet plate C until it is adjusted to an appropriate height. When the height of the placement plate needs to be lowered, the slider is pulled away from the ratchet plate C, and the positioning plate will move inside the sliding hole. The spring B will be compressed, and the ratchet teeth will no longer engage with the ratchet plate C, so the placement plate can be lowered, thereby realizing the feature of adjusting the height of the placement plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the invention and constitute a part of the specification. Together with the embodiments of the invention, they are used to explain the invention and do not constitute a limitation of the invention. In the accompanying drawings:

[0021] Figure 1 A schematic diagram of the structure of the invention;

[0022] Figure 2A schematic structural diagram of a vertical cross section of the positioning ball in the invention;

[0023] Figure 3 It is a schematic diagram of the structure of the finger ring and positioning ball in the invention;

[0024] Figure 4 It is a schematic diagram of the vertical cross-section structure of the positioning tube in the invention;

[0025] Figure 5 It is a structural diagram of a vertical cross section of the splint in the invention;

[0026] Figure 6 It is a structural diagram of the positioning cylinder and the slider in the invention;

[0027] Figure 7 For the invention Figure 2 Enlarged view of point A in the middle;

[0028] Figure 8 For the invention Figure 4 Enlarged view of point B in the middle;

[0029] Figure 9 For invention Figure 5 Schematic diagram of the structure at C in the middle;

[0030] Figure 10 For invention Figure 5 Schematic diagram of the structure at D in the middle;

[0031] In the picture:

[0032] 1. Limit assembly; 11. Placement plate; 12. Positioning ball; 13. Positioning shaft; 14. Adjustment slot; 15. Finger ring; 16. Spring rope; 17. Limit block;

[0033] 2. Clamping assembly; 21. Shift slot; 22. Positioning block; 23. Fixing bracket; 24. Sliding frame; 25. Clamping plate; 26. Ratchet plate A; 27. Pressure block; 28. Limiting ball; 29. ​​Linkage rod; 210. Ratchet plate B; 211. Pull block; 212. Bolt; 213. Rubber block; 214. Spring A; 215. Clamping block; 216. Torsion spring;

[0034] 3. Lifting assembly; 31. Base plate; 32. Ratchet plate C; 33. Positioning cylinder; 34. Slider; 35. Ratchet teeth; 36. Positioning plate; 37. Spring B. DETAILED DESCRIPTION

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0036] Example 1

[0037] like Figures 1 to 10 As shown;

[0038] Combining the above:

[0039] A hand fixing device for infusion, comprising a limiting component 1;

[0040] The limiting assembly 1 includes a placement plate 11 and a positioning ball 12 for clamping the finger, a positioning shaft 13, an adjustment groove 14, a finger ring 15, a spring rope 16 and a limiting block 17;

[0041] The clamping assembly 2 includes a displacement slot 21 provided inside the placement plate 11, a positioning block 22 for clamping the arm, a fixing frame 23, a sliding frame 24, a clamping plate 25, a ratchet plate A26, a pressure block 27, a limiting ball 28, a linkage rod 29, a ratchet plate B210, a pull block 211, a bolt 212, a rubber block 213, a spring A214, a clamping block 215, and a torsion spring 216.

[0042] The lifting assembly 3 includes a bottom plate 31 arranged below the placement plate 11 and a ratchet plate C32, a positioning cylinder 33, a slider 34, a ratchet tooth 35, a positioning plate 36 and a spring B37 for lifting.

[0043] A positioning shaft 13 is fixedly connected to the surface of the placement plate 11, a positioning hole is opened inside the positioning ball 12, the positioning shaft 13 is inserted into the positioning hole, the positioning shaft 13 is rotatably connected to the positioning ball 12 through a bearing, an adjustment groove 14 is opened inside the positioning ball 12 at a position corresponding to the finger, a spring rope 16 is arranged inside the adjustment groove 14, one end of the spring rope 16 is fixedly connected to the positioning ball 12, and a finger ring 15 is fixedly connected to the end of the spring rope 16 away from the positioning ball 12.

[0044] The positioning ball 12 is a hemispherical structure, and the positioning groove 14 extends through the plane of the positioning ball 12 . Two limiting blocks 17 are symmetrically fixedly connected to the interior of each positioning groove 14 .

[0045] A shift groove 21 is provided inside the placement plate 11, and a positioning block 22 is provided inside the shift groove 21. The positioning block 22 is slidably connected to the placement plate 11 through the shift groove 21. A fixing groove is provided inside the positioning block 22, and two fixing frames 23 are symmetrically provided inside the fixing groove. The fixing frames 23 and the positioning block 22 are fixedly connected. A sliding frame 24 is sleeved on the surface of each fixing frame 23. The sliding frame 24 and the fixing frame 23 are slidably connected. The adjacent sides of the two sliding frames 24 are fixedly connected with a splint 25.

[0046] A ratchet plate A26 is provided inside each fixing frame 23, and the ratchet plate A26 is slidably connected to the fixing frame 23. The side of the sliding frame 24 facing the teeth of the ratchet plate A26 is fixedly connected to the ratchet plate B210, and the ratchet plate B210 is meshed with the ratchet plate A26. A spring A214 is provided inside the fixing frame 23, and the two ends of the spring A214 are fixedly connected to the fixing frame 23 and the ratchet plate A26 respectively. A positioning groove is provided on the surface of each fixing frame 23, and a pull block 211 is provided inside the positioning groove, and the pull block 211 is fixedly connected to the ratchet plate A26.

[0047] A limiting ball 28 is provided inside the fixed groove, and the limiting ball 28 is slidably connected to the fixing groove and the positioning block 22. A pressure block 27 is provided above the positioning block 22, and the pressure block 27 passes through the positioning block 22 and is fixedly connected to the limiting ball 28. Two linkage rods 29 are symmetrically provided inside the fixed groove, and the opposite sides of the two linkage rods 29 are fixedly connected to the ratchet plate A26, and the side of the linkage rod 29 away from the ratchet plate A26 is in contact with the limiting ball 28.

[0048] A slide groove is provided inside the placement plate 11 , a bolt 212 is provided inside the slide groove, the bolt 212 is threadedly connected to the positioning block 22 , a rubber block 213 is provided on the surface of the placement plate 11 , and the rubber block 213 and the bolt 212 are rotatably connected.

[0049] A limiting groove is provided inside each torsion spring 216, and a clamping block 215 is provided inside each limiting groove. The clamping block 215 is rotatably connected to the clamping plate 25 through a rotating shaft. The surface of the rotating shaft is sleeved with a torsion spring 216, and the two ends of the torsion spring 216 are fixedly connected to the clamping plate 25 and the clamping block 215 respectively.

[0050] Four ratchet plates C32 are evenly fixedly connected to the side of the bottom plate 31 facing the placement plate 11. Limiting holes are provided at the positions corresponding to the placement plate 11 and the ratchet plates C32. The ratchet plates C32 are slidingly connected to the placement plate 11 through the limiting holes. Four positioning cylinders 33 are evenly fixedly connected to the bottom surface of the placement plate 11, which correspond to the four limiting holes respectively. A slider 34 is slidingly connected to the inside of each positioning cylinder 33. The two sliders 34 on the same side are fixedly connected to the side facing the ratchet plate C32 with ratchet teeth 35, and the ratchet teeth 35 are meshed with the ratchet plate C32.

[0051] A sliding hole is provided inside the slider 34, and a positioning plate 36 is provided inside the sliding hole. The positioning plate 36 is slidably connected to the slider 34 through the sliding hole. The two ends of the positioning plate 36 are fixedly connected to the positioning cylinder 33. A spring B37 is provided inside the sliding hole, and the two ends of the spring B37 are fixedly connected to the positioning plate 36 and the slider 34 respectively.

[0052] The working principle and usage process of the invention are as follows: when the patient needs to be fixed for infusion, when the infusion is performed on the back of the hand, the forearm is placed on the surface of the placement plate 11, the positioning ball 12 is grasped with the palm of the hand, and the finger is inserted into the corresponding finger ring 15. When the patient's fingers become numb due to long-term inactivity during the infusion, the patient can lift the finger to move. When the finger is lifted, the spring rope 16 will tighten the finger ring 15 due to elastic potential energy, so that the amplitude of the patient's movement is reduced, which not only prevents numbness of the finger, but also prevents needle misalignment caused by a large amplitude of movement. When the infusion is performed on the wrist, the positioning ball 12 is rotated so that the plane of the positioning ball 12 faces upward, and the finger ring 15 is pulled and rotated ninety degrees so that the spring rope 16 passes between the two limit blocks 17, and then The finger ring 15 is rotated back to its original position so that the two limit blocks 17 limit the spring rope 16. Then the finger ring 15 is placed on the plane surface of the positioning ball 12, and the finger ring 15 is perpendicular to the plane of the positioning ball 12. Then the forearm is placed on the surface of the placement plate 11, and the finger is inserted into the inside of the finger ring 15. This realizes that the finger can be limited when performing infusion on the wrist or the back of the hand. When the patient's forearm is placed on the surface of the placement plate 11, the positioning block 22 is slid inside the displacement groove 21 until it slides to a suitable position. Then, the bolt 212 is rotated so that the bolt 212 squeezes the rubber block 213. The friction force of the rubber block 213 is used to limit the position of the positioning block 22. The position of the positioning block 22 is adjusted according to the position of the acupuncture needle so that the positioning block 22 is aligned with the acupuncture needle. The positions are staggered to avoid the positioning block 22 covering the needle insertion position, making it convenient to infuse the patient. When the forearm is placed on the surface of the placement plate 11, the pressure block 27 will be squeezed, and the limiting ball 28 will move inside the fixed groove. The two linkage rods 29 will apply force to the two ratchet plates A26 due to the squeezing, and the two springs A214 will be compressed. The two ratchet plates A26 will move away from the ratchet plate B210, so that the ratchet plates B210 and the ratchet plates A26 are no longer engaged. The two splints 25 will slide on the surface of the sliding frame 24 until the two splints 25 contact the forearm, thus realizing the limitation of the forearm. When the forearm is lifted, the force on the pressure block 27 will be released, and the two springs A214 will push the two ratchet plates A26 towards the ratchet plate B210 due to the elastic potential energy, so that the two engage with each other. When the forearm is closed, the two splints 25 are attached to the surface of the forearm due to gravity, preventing blood circulation from being blocked due to tight squeezing. When the splints 25 are attached to the surface of the forearm, the two clamping blocks 215 will also be tightly attached to the surface of the forearm due to the torsion of the torsion spring 216, thus limiting the forearms of different diameters. When the forearm needs to be taken out, the pulling block 211 is pulled away from the fixing frame 23 to make the ratchet plate A26 away from the ratchet plate B210, and the splint 25 can be pushed upward until the forearm is released. When the height of the placement plate 11 needs to be adjusted, the placement plate 11 is pulled upward, and the ratchet plate C32 will slide inside the limiting hole, and the slider 34 will slide inside the positioning cylinder 33 due to the engagement of the ratchet teeth 35 and the ratchet plate C32.When the height of the placement plate 11 needs to be lowered, the slider 34 is pulled away from the ratchet plate C32. The positioning plate 36 moves inside the slide hole, the spring B37 is compressed, and the ratchet teeth 35 no longer engage with the ratchet plate C32. The placement plate 11 can then be lowered, thus achieving the height adjustment of the placement plate 11.

[0053] Finally, it should be noted that the above descriptions are merely preferred embodiments of the invention and are not intended to limit the invention. Although the invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the invention shall be included within the scope of protection of the invention.

Claims

1. A hand fixing device for infusion, characterized in that: It includes a limit assembly (1); The limiting assembly (1) comprises a placement plate (11), a positioning ball (12) for clamping a finger, a positioning shaft (13), a positioning groove (14), a finger ring (15), a spring rope (16) and a limiting block (17); The clamping assembly (2) comprises a displacement groove (21) provided inside the placement plate (11), a positioning block (22) for clamping the arm, a fixing frame (23), a sliding frame (24), a clamping plate (25), a ratchet plate A (26), a pressure block (27), a limiting ball (28), a linkage rod (29), a ratchet plate B (210), a pulling block (211), a bolt (212), a rubber block (213), a spring A (214), a clamping block (215) and a torsion spring (216); The lifting assembly (3) comprises a bottom plate (31) arranged below the placement plate (11), and a ratchet plate C (32) for lifting, a positioning cylinder (33), a slider (34), ratchet teeth (35), ratchet teeth (35), a positioning plate (36) and a spring B (37).

2. The hand fixing device for infusion according to claim 1, characterized in that: A positioning shaft (13) is fixedly connected to the surface of the placement plate (11); a positioning hole is provided inside the positioning ball (12); the positioning shaft (13) is inserted inside the positioning hole; the positioning shaft (13) is rotatably connected to the positioning ball (12) via a bearing; a positioning groove (14) is provided inside the positioning ball (12) at a position corresponding to a finger; a spring rope (16) is provided inside the positioning groove (14); one end of the spring rope (16) is fixedly connected to the positioning ball (12); and one end of the spring rope (16) away from the positioning ball (12) is fixedly connected to a finger ring (15).

3. The hand fixing device for infusion according to claim 2, characterized in that: The positioning ball (12) is a hemispherical structure, and the positioning groove (14) penetrates the plane of the positioning ball (12), and two limiting blocks (17) are symmetrically fixedly connected inside each positioning groove (14).

4. The hand fixing device for infusion according to claim 3, characterized in that: The placement plate (11) is provided with a displacement groove (21) inside, and a positioning block (22) is arranged inside the displacement groove (21). The positioning block (22) is slidably connected to the placement plate (11) through the displacement groove (21). The positioning block (22) is provided with a fixing groove inside, and two fixing frames (23) are symmetrically arranged inside the fixing groove. The fixing frames (23) and the positioning block (22) are fixedly connected. A sliding frame (24) is sleeved on the surface of each fixing frame (23). The sliding frame (24) and the fixing frame (23) are slidably connected, and adjacent surfaces of the two sliding frames (24) are fixedly connected with a clamping plate (25).

5. The hand fixing device for infusion according to claim 4, characterized in that: A ratchet plate A (26) is arranged inside each of the fixing frames (23), and the ratchet plate A (26) and the fixing frames (23) are slidably connected. A ratchet plate B (210) is fixedly connected to a side of the sliding frame (24) facing the teeth of the ratchet plate A (26), and the ratchet plate B (210) and the ratchet plate A (26) are meshingly connected. A spring A (214) is arranged inside the fixing frame (23), and two ends of the spring A (214) are respectively fixedly connected to the fixing frame (23) and the ratchet plate A (26). A positioning groove is provided on the surface of each of the fixing frames (23), and a pull block (211) is arranged inside the positioning groove, and the pull block (211) and the ratchet plate A (26) are fixedly connected.

6. The hand fixing device for infusion according to claim 5, characterized in that: A limiting ball (28) is arranged inside the fixed groove, and the limiting ball (28) is slidably connected to the fixing groove and the positioning block (22). A pressing block (27) is arranged above the positioning block (22), and the pressing block (27) passes through the positioning block (22) and is fixedly connected to the limiting ball (28). Two linkage rods (29) are symmetrically arranged inside the fixed groove, and opposite sides of the two linkage rods (29) are fixedly connected to the ratchet plate A (26), and a side of the linkage rod (29) away from the ratchet plate A (26) is in contact with the limiting ball (28).

7. The hand fixing device for infusion according to claim 6, characterized in that: A slide groove is provided inside the placement plate (11), a bolt (212) is provided inside the slide groove, the bolt (212) is threadedly connected to the positioning block (22), a rubber block (213) is provided on the surface of the placement plate (11), and the rubber block (213) and the bolt (212) are rotatably connected.

8. The hand fixing device for infusion according to claim 7, characterized in that: A limiting groove is provided inside each of the torsion springs (216), and a clamping block (215) is arranged inside each of the limiting grooves. The clamping block (215) is rotatably connected to the clamping plate (25) via a rotating shaft, and a torsion spring (216) is sleeved on the surface of the rotating shaft. The two ends of the torsion spring (216) are fixedly connected to the clamping plate (25) and the clamping block (215) respectively.

9. The hand fixing device for infusion according to claim 8, characterized in that: Four ratchet plates C (32) are evenly fixedly connected to one side of the bottom plate (31) facing the placement plate (11); limiting holes are provided at positions of the placement plate (11) corresponding to the ratchet plates C (32); the ratchet plates C (32) are slidably connected to the placement plate (11) through the limiting holes; four positioning cylinders (33) are evenly fixedly connected to the bottom surface of the placement plate (11), respectively corresponding to the four limiting holes; a slider (34) is slidably connected to the interior of each positioning cylinder (33); two sliders (34) on the same side are fixedly connected to one side of the ratchet plates C (32) with ratchet teeth (35); the ratchet teeth (35) are meshingly connected to the ratchet plates C (32).

10. The hand fixing device for infusion according to claim 9, characterized in that: A sliding hole is provided inside the slider (34), a positioning plate (36) is provided inside the sliding hole, the positioning plate (36) is slidably connected to the slider (34) through the sliding hole, and the two ends of the positioning plate (36) are fixedly connected to the positioning tube (33), a spring B (37) is provided inside the sliding hole, and the two ends of the spring B (37) are respectively fixedly connected to the positioning plate (36) and the slider (34).

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