Arm placing supporting pad for intravenous indwelling needle puncture in imaging department nursing

Abstract

The invention discloses an arm placement supporting pad for intravenous indwelling needle puncture in imaging department nursing, and relates to the field of medical instruments, the arm placement supporting pad comprises an upper supporting pad and a lower supporting pad, a connecting supporting pad is fixedly connected between the upper supporting pad and the lower supporting pad, and switching structures are arranged between the upper supporting pad and the lower supporting pad and close to the two sides; the switching structure comprises a fixed block and a fixed rotating block, placement grooves are formed in the positions, close to the two sides, in the connecting supporting pad in a penetrating mode, the fixed block is arranged on the front portion of the upper supporting pad and located in the placement grooves, the fixed rotating block is arranged on the rear portion of the lower supporting pad and located in the placement grooves, and a limiting rotating block is fixedly connected to the front portion of the fixed rotating block; the rear portion of the fixing block is fixedly connected with a connecting shaft, the lower supporting pad can freely rotate in the horizontal direction, the angle of the lower supporting pad can be accurately adjusted in the vertical direction, medical staff ingeniously adjust the posture of the arm according to the blood vessel trend of the arm of a patient and different conditions of the puncture position, the arm is in the optimal puncture state, and diversified puncture requirements are met in an all-around mode.

Description

Technical Field

[0001] The invention relates to the field of medical devices, and in particular to an arm placement support pad for intravenous indwelling needle puncture in imaging department nursing. Background Art

[0002] When the imaging department nurse performs intravenous catheter puncture, the arm placement pad is extremely critical. It is mostly made of soft ergonomic materials to provide a stable support for the patient's arm, so that the puncture site is fully exposed, stretched and maintained at a suitable height and angle. It not only helps the nurse to insert the needle accurately, but also improves the patient's comfort, ensures the smooth progress of the puncture process, and reduces puncture errors caused by arm shaking and improper placement; The Chinese patent with the publication number of "CN216603698U" discloses "an arm placement support pad for intravenous indwelling needle puncture in the imaging department, including an arm placement support body, an arm placement slot is provided in the middle of the arm placement support body, a movable palm gripping arm is provided at the front end of the arm placement support body, and an adjustment structure matching the front and rear movement and up and down lifting of the palm gripping arm is provided at the front end of the arm placement support body, the adjustment structure includes a lifting adjustment hub and a lifting slide; the palm gripping arm is movably mounted between the lifting slides"; Although the above patent can play the role of "placing the arm in the arm placement slot when in use, adjusting the position of the palm grasping arm according to the length and size of the arm, flexible to use and strong applicability; the patient's palm grasping arm is tightly grasped, which can make the blood vessels on the arm fuller; secondly, it can divert the patient's attention and relieve the pain during injection, reflecting the humanistic care of medical services", but there are obvious deficiencies in the fine adjustment of the arm posture. The patent only relies on the forward and backward movement and up and down lifting of the palm grasping arm to adapt to the arm, and cannot achieve multi-angle flexible adjustment of the support pad in the horizontal and vertical directions. It is difficult for medical staff to accurately adjust the arm posture according to the complex direction of the patient's arm blood vessels and the subtle differences in the puncture site. This limits the achievement of the best puncture effect to a certain extent and cannot fully meet the diverse puncture needs. Summary of the invention

[0003] The main purpose of the present invention is to provide an arm support pad for intravenous needle puncture in the imaging department. The lower support pad can rotate freely in the horizontal direction and the angle can be accurately adjusted in the vertical direction. Medical staff can skillfully adjust the arm posture according to the direction of the patient's arm blood vessels and the different conditions of the puncture site, so that the arm is in the best puncture state and fully meet various puncture needs.

[0004] To achieve the above object, the technical solution adopted by the present invention is: An arm placement support pad for intravenous indwelling needle puncture in imaging department nursing, comprising an upper support pad and a lower support pad, a connecting support pad fixedly connected between the upper support pad and the lower support pad, a switching structure is provided between the upper support pad and the lower support pad and on both sides, the switching structure comprises a fixed block and a fixed rotating block, placement grooves are penetrated through the interior of the connecting support pad on both sides, the fixed block is provided at the front of the upper support pad and located inside the placement groove, the fixed rotating block is provided at the rear of the lower support pad and located inside the placement groove, the front of the fixed rotating block is fixedly connected to the limited rotating block, and the rear of the fixed block is fixedly connected to a connecting shaft.

[0005] As a further solution of the present invention, the connecting shaft passes through the rear part of the upper supporting pad, and the lower supporting pad is rotatably connected to the fixed rotating block through a limiting rotating block.

[0006] As a further solution of the present invention, the connection support pad is made of rubber material, the height of the placement groove is longer than the horizontal length of the fixing block, and the placement groove is arranged in a cube shape.

[0007] As a further solution of the present invention, six sliding grooves are symmetrically and equidistantly provided on the outer surface of the coupling shaft and located at the rear of the upper support pad, a tooth groove is provided through the rear of the upper support pad and located at the outer surface of the coupling shaft, a tooth block is slidably connected to the outer surface of the coupling shaft and located inside the tooth groove, six sliding blocks are fixedly connected to the inner ring of the tooth block at equal intervals, a connecting ring is fixedly connected to the rear of the tooth block and located at the outer surface of the coupling shaft, a thread groove 1 is provided on the outer surface of the coupling shaft and located at the rear of the connecting ring, a thread groove 2 is provided on the outer surface of the connecting ring, and fixing caps are provided on the outer surfaces of the connecting ring and the coupling shaft.

[0008] As a further solution of the present invention, the latching tooth block is adaptively matched with the latching tooth groove, and the thickness of the latching tooth groove is consistent with the thickness of the latching tooth block.

[0009] As a further solution of the present invention, the length of the slide groove is equal to twice the thickness of the tooth block, and the connecting ring and the connecting shaft are threadedly connected to the fixing cap through the second thread groove and the first thread groove.

[0010] As a further solution of the present invention, a start-stop fixing structure is provided on the top of the two fixed rotating blocks, and the start-stop fixing structure includes a start-stop gear and a start-stop claw. The start-stop gear is rotatably connected to the top center position of the fixed rotating block, and the start-stop claw is rotatably connected to the top of the fixed rotating block and is located on the outer surface of the start-stop gear. A fixing block is fixedly connected to the top of the fixed rotating block and at one end of the start-stop claw, and two springs are fixedly connected between the fixing block and the start-stop claw.

[0011] As a further solution of the present invention, the tooth block of the start-stop gear is composed of an inclined surface and a vertical surface, the start-stop claw is adaptively matched with the start-stop gear, and the top of the fixed block passes through the top of the fixed rotating block and is fixedly connected to the start-stop gear.

[0012] As a further solution of the present invention, three groups of sweat channels are symmetrically opened on the top of the upper support pad and the lower support pad, and three air ducts are opened on one side of the upper support pad and the lower support pad. Each group of sweat channels is connected to each air duct respectively, and the diameter of the sweat channel is larger when it is closer to the connection pad.

[0013] The above embodiments of the present invention can achieve the following beneficial effects: through the unique switching structure design, the arm placement support pad for intravenous indwelling needle puncture in the imaging department nursing line shows extraordinary multi-angle flexible adjustment characteristics, the lower support pad can rotate freely in the horizontal direction, and the angle can be accurately adjusted in the vertical direction. Medical staff can skillfully adjust the arm posture according to the different conditions of the patient's arm blood vessels and the puncture site, so that the arm is in the best puncture state, and fully meet the diverse puncture needs; The practicality has been greatly improved through the exquisite cooperation of the fixed block and the fixed rotating block. In the process of adjusting the horizontal and vertical angles, the two adjustment functions are perfectly integrated, and the effective support area between the support pad and the arm is not reduced at all, which effectively optimizes the practical performance of the support pad and lays a stable and efficient support foundation for the puncture operation. By carefully setting the tooth block, tooth groove and fixing cap at the connecting shaft, the long-term stability during use is increased. The tooth block and the tooth groove are precisely engaged, and then the fixing cap is used to firmly connect them, achieving double-safety fixation. In the high-intensity and frequent angle adjustment daily work scenarios of the imaging department, it can strongly ensure that the support pad maintains a stable state for a long time, effectively avoiding the thorny problems such as looseness between the tooth block and the tooth groove, greatly reducing maintenance costs and time loss; The start-stop fixing structure on the top of the fixed turn block improves the convenience of operation. With the tacit cooperation of the start-stop gear and the start-stop claw and the elastic assistance of the spring, after the angle adjustment between the upper support pad and the lower support pad is completed, the angle can be locked automatically and quickly, without the need to build an additional complicated fixing structure, and the operation process is simple and clear.

[0014] By setting up the sweat drainage channel and the air duct, the sweat discharged from the arm can enter the air duct through the sweat drainage channel and be discharged from the inside of the support pad by the air duct, effectively avoiding the influence of sweat accumulation on venous puncture. The air outlet end of the external heat dissipation outlet device can be aligned with the air duct, and the wind blows to the top of the support pad along the air duct and the sweat drainage channel, which can blow and dissipate the contact part between the arm and the support pad, eliminating the hidden danger of sweat interfering with venous puncture from the root, and creating more favorable conditions for intravenous needle puncture operations in the Department of Imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an arm support pad for intravenous indwelling needle puncture in an imaging department nursing unit of the present invention; Figure 2This is a diagram showing the switching structure after the connection support pad is disassembled for placing a support pad on an arm for intravenous indwelling needle puncture in the imaging department of the present invention; Figure 3 This is a diagram showing the switching structure of the middle and lower support pads after disassembly and splitting of an arm support pad for intravenous indwelling needle puncture in the imaging department of the present invention; Figure 4 This is a perspective view from another side of the overall structure of the arm placement support pad for intravenous indwelling needle puncture in the imaging department of the present invention after the tooth block, the connecting ring and the fixing cap are disassembled; Figure 5 The present invention is a support pad for placing an arm for intravenous indwelling needle puncture in the imaging department nursing Figure 4 A magnified view of part A; Figure 6 The present invention is a support pad for placing an arm for intravenous indwelling needle puncture in the imaging department nursing Figure 4 A magnified view of part B; Figure 7 This is a diagram showing a start-stop fixing structure in a support pad for placing an arm during intravenous indwelling needle puncture in an imaging department nursing unit of the present invention; Figure 8 The present invention is a support pad for placing an arm for intravenous indwelling needle puncture in the imaging department nursing Figure 7 Enlarged view of part C.

[0016] In the figure: 1. upper support pad; 2. lower support pad; 3. connecting support pad; 4. switching structure; 5. placement slot; 6. fixed block; 7. fixed rotating block; 8. connecting shaft; 9. limiting rotating block; 10. slide slot; 11. tooth slot; 12. thread slot one; 13. connecting ring; 14. thread slot two; 15. tooth block; 16. slider; 17. fixing cap; 18. start-stop fixing structure; 19. start-stop gear; 20. start-stop claw; 21. fixing block; 22. spring; 23. perspiration channel; 24. air duct. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0018] like Figure 1-Figure 8As shown, an arm placement support pad for intravenous indwelling needle puncture in imaging department nursing includes an upper support pad 1 and a lower support pad 2, a connecting support pad 3 is fixedly connected between the upper support pad 1 and the lower support pad 2, a switching structure 4 is arranged between the upper support pad 1 and the lower support pad 2 and on both sides, the switching structure 4 includes a fixed block 6 and a fixed rotating block 7, a placement groove 5 is penetrated on both sides of the interior of the connecting support pad 3, the fixed block 6 is arranged at the front of the upper support pad 1 and located inside the placement groove 5, the fixed rotating block 7 is arranged at the rear of the lower support pad 2 and located inside the placement groove 5, the front part of the fixed rotating block 7 is fixedly connected to the limited rotating block 9, and the rear part of the fixed block 6 is fixedly connected to the connecting shaft 8.

[0019] During the actual operation, the patient's arm is placed on the top of the upper support pad 1, the lower support pad 2 and the connecting support pad 3. The medical staff must first gently adjust the position of the patient's limbs to ensure that the puncture site can be naturally stretched and is in the most suitable state for puncture. At this time, the subsequent puncture preparation work can be started.

[0020] Specifically, when the fixed block 6 and the fixed rotating block 7 are in the initial position, the lower support pad 2 can be directly rotated horizontally by the two fixed blocks 6 being rotatably connected to the two fixed rotating blocks 7 respectively, so that the patient's arm can be adjusted horizontally from the joint. The two fixed blocks 6 are rotated by the two connecting shafts 8 so that the two fixed blocks 6 are in a vertical state. At this time, the two fixed blocks 6 can be rotatably connected to the two fixed rotating blocks 7 respectively to adjust the angle in the vertical direction, so that the patient's arm can be adjusted vertically from the joint. According to the direction of the blood vessels in the patient's arm and the puncture site, the medical staff can adjust the horizontal or vertical angle of the lower support pad 2 to make the arm in the most favorable posture for puncture.

[0021] In addition, the horizontal and vertical angle rotation adjustment of the lower support pad 2 are achieved by relying on the exquisite cooperation of the fixed block 6 and the fixed rotating block 7. Medical staff only need to rotate the connecting shaft 8 to quickly switch the adjustment direction of the lower support pad 2, and cleverly integrate the originally separate horizontal angle adjustment function and vertical angle adjustment function into the same structure. In this way, while fully meeting the flexible and changeable angle adjustment needs of the placement pad, ensuring that it can achieve precise control of the horizontal angle and complete fine calibration of the vertical angle, the effective lifting area between the placement tray and the patient's arm will not be reduced at all. This design greatly optimizes the practicability of the support pad and provides more stable and efficient support conditions for the intravenous catheter puncture operation in the Department of Imaging.

[0022] In this embodiment, the connecting shaft 8 passes through the rear portion of the upper supporting pad 1 , and the lower supporting pad 2 is rotatably connected to the fixed rotating block 7 via the limiting rotating block 9 .

[0023] In this embodiment, the connecting support pad 3 is made of rubber material, the height of the placement groove 5 is longer than the horizontal length of the fixing block 6, and the placement groove 5 is arranged in a cube shape. When the lower support pad 2 rotates, it will drive the connecting support pad 3 to rotate and shrink together.

[0024] In this embodiment, six sliding grooves 10 are symmetrically and equidistantly provided on the outer surface of the coupling shaft 8 and located at the rear of the upper supporting pad 1, a tooth groove 11 is provided through the rear of the upper supporting pad 1 and located at the outer surface of the coupling shaft 8, a tooth block 15 is slidably connected to the outer surface of the coupling shaft 8 and located inside the tooth groove 11, and six sliding blocks 16 are fixedly connected to the inner ring of the tooth block 15 at equal intervals, a connecting ring 13 is fixedly connected to the rear of the tooth block 15 and located at the outer surface of the coupling shaft 8, a thread groove 12 is provided on the outer surface of the coupling shaft 8 and located at the rear of the connecting ring 13, a thread groove 2 is provided on the outer surface of the connecting ring 13, and a fixing cap 17 is provided on the outer surface of the connecting ring 13 and the outer surface of the coupling shaft 8.

[0025] Specifically, when it is necessary to rotate the connecting shaft 8 to adjust the angle of the fixed block 6, first loosen the fixing cap 17, then slide the six sliders 16 along the six slide grooves 10, and then drive the tooth block 15 to slide along the outer surface of the connecting shaft 8 until the tooth block 15 and the tooth groove 11 are no longer engaged, and the locking of the connecting shaft 8 can be completed. At this time, the connecting shaft 8 can be rotated to adjust the angle of the fixed block 6.

[0026] When it is necessary to fix the coupling 8 so as to fix the angle of the fixing block 6, first slide the six sliders 16 along the six slide grooves 10, thereby driving the tooth block 15 to enter the inside of the tooth groove 11, so that the tooth block 15 is engaged with the tooth groove 11. At this time, tighten the fixing cap 17 along the thread groove 12 and the thread groove 2 14, so that the fixing cap 17 is connected to the connecting ring 13 and the coupling 8 at the same time, so that the coupling 8 cannot rotate at this time.

[0027] The engagement of the tooth block 15 with the tooth groove 11 makes the tooth block 15 unable to rotate, and further makes the slider 16 unable to rotate, and further makes the connecting shaft 8 unable to rotate. The fixing cap 17 is connected to the connecting ring 13 and the connecting shaft 8 at the same time, so that the connecting ring 13 together with the tooth block 15 cannot slide horizontally. Therefore, it is avoided that the tooth block 15 slides and becomes no longer engaged after being engaged with the tooth groove 11. Therefore, the engagement of the tooth block 15 with the tooth groove 11 and the fixing cap 17 with the connecting ring 13 and the connecting shaft 8 at the same time achieves the purpose of double fixation. In the case of daily high-intensity operations in the imaging department and frequent angle adjustment operations, the double fixation method greatly enhances the long-term stability of the support pad, effectively avoids the problem of loosening of the tooth block 15 and the tooth groove 11 during long-term use, and greatly reduces the maintenance cost and time loss caused by loosening.

[0028] In this embodiment, the latching tooth block 15 is adaptively matched with the latching tooth groove 11 , and the thickness of the latching tooth groove 11 is consistent with the thickness of the latching tooth block 15 .

[0029] In this embodiment, the length of the slide groove 10 is equal to twice the thickness of the latch block 15 , and the connecting ring 13 and the connecting shaft 8 are threadedly connected to the fixing cap 17 through the second thread groove 14 and the first thread groove 12 .

[0030] In this embodiment, a start-stop fixing structure 18 is provided on the top of the two fixed rotating blocks 7. The start-stop fixing structure 18 includes a start-stop gear 19 and a start-stop claw 20. The start-stop gear 19 is rotatably connected to the top center position of the fixed rotating block 7. The start-stop claw 20 is rotatably connected to the top of the fixed rotating block 7 and is located on the outer surface of the start-stop gear 19. A fixing block 21 is fixedly connected to the top of the fixed rotating block 7 and one end of the start-stop claw 20. Two springs 22 are fixedly connected between the fixing block 21 and the start-stop claw 20.

[0031] Specifically, the fixing block 6 is rotated horizontally clockwise to drive the upper support pad 1 to rotate clockwise, and the angle between the upper support pad 1 and the lower support pad 2 is adjusted accordingly. At the same time, the start-stop gear 19 is driven to rotate horizontally clockwise, so that the inclined surface of each tooth block of the start-stop gear 19 is squeezed against the inclined surface of the other end of the start-stop claw 20, so that the start-stop claw 20 rotates clockwise, and the two springs 22 are compressed. When the start-stop gear 19 stops rotating, the two springs 22 rebound, so that the start-stop claw 20 is engaged with the start-stop gear 19 again. At this time, if you want to adjust the angle between the upper support pad 1 and the lower support pad 2, the start-stop gear 19 will be driven to rotate counterclockwise, so that the vertical surface of the tooth block of the start-stop gear 19 is squeezed against the vertical surface of the other end of the start-stop claw 20. Therefore, the start-stop claw 20 cannot rotate, and thus the start-stop gear 19 cannot rotate counterclockwise. Therefore, after adjusting the angle between the upper support pad 1 and the lower support pad 2, its angle can be automatically and quickly fixed, and no other redundant fixing structure can be set up.

[0032] Rotate the connecting shaft 8 to rotate the fixed block 6 and the fixed rotating block 7 to a vertical state. At this time, rotate the fixed block 6 counterclockwise, and the movement steps and principles of the start-stop gear 19 and the start-stop claw 20 are the same as above.

[0033] In this embodiment, the tooth block of the start-stop gear 19 is composed of an inclined surface and a vertical surface, the start-stop claw 20 is adaptively matched with the start-stop gear 19, and the top of the fixed block 6 passes through the top of the fixed rotating block 7 and is fixedly connected to the start-stop gear 19.

[0034] In this embodiment, three groups of sweat channels 23 are symmetrically opened on the top of the upper support pad 1 and the lower support pad 2, and three air ducts 24 are opened on one side of the upper support pad 1 and the lower support pad 2. Each group of sweat channels 23 is connected to each air duct 24 respectively, and the diameter of the sweat channel 23 is larger when it is closer to the support pad 3.

[0035] When the arm support pad is used in a hot environment such as in summer, the contact portion between the arm and the upper support pad 1, the lower support pad 2 and the connecting support pad 3 will sweat due to the hot environment, and the discharged sweat will enter the inside of the sweat discharge channel 23, and then the sweat will be discharged from the inside of the arm support pad by the air duct 24, thereby avoiding the inverted sweat from affecting the venous puncture. In addition, the air outlet end of an external fan or other heat dissipation device is aligned with the air duct 24, so that the blown wind will blow along the air duct 24 and the sweat discharge channel 23 to the top of the upper support pad 1 and the lower support pad 2, and then the contact portion between the arm and the upper support pad 1, the lower support pad 2 and the connecting support pad 3 will be blown to dissipate heat, thereby fundamentally eliminating the problem of sweat affecting venous puncture.

[0036] In some embodiments, a processor (not shown in the figure) and an ultrasonic sensor (not shown in the figure) are also included. The ultrasonic sensor is opposite to the switching structure 4. The processor is connected to the ultrasonic sensor signal. The ultrasonic sensor continuously sends ultrasonic signals to the switching structure 4, receives ultrasonic data and sends it to the processor. The processor has a built-in trained variational autoencoder and deep neural network. The input of the variational autoencoder is ultrasonic data, and the output of the variational autoencoder is an internal simulated image of the switching structure 4. The input of the convolutional neural network is an internal simulated image of the switching structure 4, and the output of the convolutional neural network is the degree of structural damage of the switching structure 4. If the degree of structural damage of the switching structure 4 is greater than a threshold, the processor sends an alarm signal to the control port of the management user.

Claims

1. An arm support pad for intravenous indwelling needle puncture in an imaging department, comprising an upper support pad (1) and a lower support pad (2), characterized in that: A connecting pad (3) is fixedly connected between the upper supporting pad (1) and the lower supporting pad (2); a switching structure (4) is provided between the upper supporting pad (1) and the lower supporting pad (2) and on both sides; the switching structure (4) comprises a fixed block (6) and a fixed rotating block (7); placement grooves (5) are provided through the interior of the connecting pad (3) on both sides; the fixed block (6) is provided at the front of the upper supporting pad (1) and is located inside the placement groove (5); the fixed rotating block (7) is provided at the rear of the lower supporting pad (2) and is located inside the placement groove (5); the front of the fixed rotating block (7) is fixedly connected to a limited position rotating block (9); and the rear of the fixed block (6) is fixedly connected to a connecting shaft (8).

2. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 1, characterized in that: The connecting shaft (8) passes through the rear part of the upper supporting pad (1), and the lower supporting pad (2) is rotatably connected to the fixed rotating block (7) via a limiting rotating block (9).

3. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 1, characterized in that: The connecting support pad (3) is made of rubber material, the height of the placement groove (5) is longer than the horizontal length of the fixing block (6), and the placement groove (5) is arranged in a cube shape.

4. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 1, characterized in that: The outer surface of the coupling shaft (8) is symmetrically provided with six sliding grooves (10) at a distance from each other and located at the rear of the upper support pad (1); a tooth groove (11) is provided through the outer surface of the coupling shaft (8) at the rear of the upper support pad (1); a tooth block (15) is slidably connected to the outer surface of the coupling shaft (8) and located inside the tooth groove (11); six sliding blocks (16) are fixedly connected to the inner ring of the tooth block (15) at a distance from each other; a connecting ring (13) is fixedly connected to the rear of the tooth block (15) and located at the outer surface of the coupling shaft (8); a thread groove 1 (12) is provided on the outer surface of the coupling shaft (8) and located at the rear of the connecting ring (13); a thread groove 2 (14) is provided on the outer surface of the connecting ring (13); and fixing caps (17) are provided on the outer surfaces of the connecting ring (13) and the coupling shaft (8).

5. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 4, characterized in that: The latching tooth block (15) is adaptively matched to the latching tooth groove (11), and the thickness of the latching tooth groove (11) is consistent with the thickness of the latching tooth block (15).

6. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 4, characterized in that: The length of the slide groove (10) is equal to twice the thickness of the latching tooth block (15), and the connecting ring (13) and the connecting shaft (8) are threadedly connected to the fixing cap (17) via the second thread groove (14) and the first thread groove (12).

7. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 1, characterized in that: A start-stop fixing structure (18) is provided at the top of each of the two fixed rotating blocks (7), and the start-stop fixing structure (18) comprises a start-stop gear (19) and a start-stop claw (20), the start-stop gear (19) is rotatably connected to the top center position of the fixed rotating block (7), the start-stop claw (20) is rotatably connected to the top of the fixed rotating block (7) and is located on the outer surface of the start-stop gear (19), a fixing block (21) is fixedly connected to the top of the fixed rotating block (7) and one end of the start-stop claw (20), and two springs (22) are fixedly connected between the fixing block (21) and the start-stop claw (20).

8. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 7, characterized in that: The tooth block of the start-stop gear (19) is composed of an inclined surface and a vertical surface, the start-stop claw (20) is adaptively matched with the start-stop gear (19), and the top of the fixed block (6) penetrates the top of the fixed rotating block (7) and is fixedly connected to the start-stop gear (19).

9. The arm support pad for intravenous indwelling needle puncture in the imaging department according to claim 1, characterized in that: The tops of the upper support pad (1) and the lower support pad (2) are symmetrically provided with three groups of sweat discharge channels (23), and one side of the upper support pad (1) and the lower support pad (2) is provided with three air ducts (24), each group of sweat discharge channels (23) is connected to each air duct (24), and the diameter of the sweat discharge channels (23) closer to the support pad (3) is larger.

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