An adjustable hand-fixing pillow for radial artery puncture

Abstract

This utility model relates to the field of medical device technology, specifically an adjustable hand fixation pillow for radial artery puncture. It includes a pillow block with an internal receiving cavity. An arc-shaped support plate is slidably mounted inside the receiving cavity. Four sets of finger sleeves are connected to the top of the pillow block, positioned in front of the arc-shaped support plate, on the front side of the arc-shaped support plate. An arm fixation sleeve is located at the top of the pillow block, positioned behind the arc-shaped support plate. A set of bidirectional screws is rotatably connected inside the receiving cavity. This utility model, through the finger sleeves and arm fixation sleeves, ensures that the patient's wrist remains fixed and firmly against the arc-shaped support plate. Medical personnel can control the up-and-down movement of the arc-shaped support plate via a control drive component. During the puncture process, it assists in fully flexing the patient's wrist, making the radial artery clearly visible and preventing hand movement during the puncture, thus ensuring a smooth procedure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and more specifically, to an adjustable hand fixation pillow for radial artery puncture. Background Technology

[0002] Radial artery puncture is a procedure that involves puncturing the radial artery in the wrist to obtain a blood sample or perform other related medical procedures. Clinically, it is commonly used for arterial blood gas analysis, monitoring arterial pressure, cardiovascular interventional procedures, drug injection, and arterial angiography.

[0003] Currently, during radial artery puncture, a cotton pad is usually used to elevate the patient's wrist so that it can be kept facing upwards for medical staff to perform the puncture. However, since the height of the cotton pad cannot be adjusted during the puncture, the patient's wrist may not be bent properly. In this case, the skin of the patient's wrist is not tightened, making the radial artery not clearly visible. Furthermore, the patient's wrist may shake after feeling pain during the puncture, which will affect the puncture process. Utility Model Content

[0004] This invention provides an adjustable hand fixation pillow for radial artery puncture, which solves the technical problem of poor fixation of the patient's head in the prior art.

[0005] In view of the above problems, the technical solution proposed by this utility model is as follows: An adjustable hand fixation pillow for radial artery puncture includes a pillow block with an internal receiving cavity. An arc-shaped support plate is slidably disposed inside the receiving cavity. A finger sleeve is connected to the top of the pillow block at the front side of the arc-shaped support plate. Four sets of finger sleeves are arranged side by side at the front side of the arc-shaped support plate. An arm fixation sleeve is disposed at the top of the pillow block at the rear side of the arc-shaped support plate. A set of bidirectional screws is rotatably connected inside the receiving cavity. Two sets of threaded sleeves are threaded to both sides of the bidirectional screws. Two sets of connecting rods are disposed between the two sets of threaded sleeves and the bottom of the arc-shaped support plate. The two ends of the connecting rods are respectively hinged to the threaded sleeves and the arc-shaped support plate via hinges. A drive assembly for controlling the bidirectional screws to rotate in both directions is disposed inside the receiving cavity.

[0006] Furthermore, the drive assembly includes a rotating shaft rotatably disposed inside the receiving cavity, a first bevel gear connected to one end of the rotating shaft, and a second bevel gear sleeved on the surface of the bidirectional screw and meshing with the first bevel gear. One end of the rotating shaft extends out of the side wall of the pillow block and is fixedly connected to a knob.

[0007] Furthermore, a guide hole is fixedly provided inside the receiving cavity, and a guide rod is provided at the bottom of the arc-shaped support plate, the guide rod being slidably connected in the guide hole.

[0008] Furthermore, a sponge pad is provided on the top surface of the arc-shaped support plate.

[0009] Furthermore, several sets of connecting plates are connected to the side wall of the pillow block, and a sliding rod is slidably arranged on the connecting plate, with a suction cup connected to the bottom end of the sliding rod.

[0010] Furthermore, handles are connected to both sides of the pillow block.

[0011] Compared with the prior art, the beneficial effects of this utility model are: the finger cot and arm fixation sleeve can keep the patient's wrist fixed and close to the arc-shaped support plate at all times. Medical staff can control the arc-shaped support plate to move up and down through the control drive component. During the puncture, it can help to fully bend the patient's wrist into place, so that the radial artery of the patient's wrist can be clearly exposed. It can also prevent the patient's hand from shaking during the puncture, ensuring the smooth progress of the puncture process. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of the pillow block in this utility model; Figure 3 This is a cross-sectional view of the receiving cavity in this utility model; Figure 4 The figure shows a schematic diagram of the disassembled structure of the arc-shaped support plate and the receiving cavity of this utility model.

[0014] In the diagram: 1. Pillow block; 2. Receiving cavity; 3. Arc-shaped support plate; 4. Finger sleeve; 5. Arm fixing sleeve; 6. Two-way screw; 7. Screw sleeve; 8. Connecting rod; 9. Rotating shaft; 10. First bevel gear; 11. Second bevel gear; 12. Knob; 13. Guide hole; 14. Guide rod; 15. Sponge pad; 16. Connecting plate; 17. Slide rod; 18. Suction cup; 19. Grip. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0017] Please see Figure 1-4 An adjustable hand-fixing pillow for radial artery puncture includes a pillow block 1. The pillow block 1 has an internal receiving cavity 2, and an arc-shaped support plate 3 is slidably disposed within the receiving cavity 2. The top surface of the arc-shaped support plate 3 extends beyond the top of the pillow block 1 to support the wrist of the patient undergoing radial artery puncture. A finger sleeve 4 is connected to the top of the pillow block 1 at the front side of the arc-shaped support plate 3. Four sets of finger sleeves 4 are arranged side-by-side at the front side of the arc-shaped support plate 3. An arm-fixing sleeve 5 is disposed at the top of the pillow block 1 at the rear side of the arc-shaped support plate 3. Both the finger sleeves 4 and the arm-fixing sleeve 5 are made of elastic bands. When the patient's wrist is placed on the arc-shaped support plate 3, the four fingers excluding the thumb can be placed in the finger sleeves 4. At this time, the finger sleeves 4 tightly fit the patient's four fingers, keeping them close to the top of the pillow block 1. Simultaneously, the arm at the rear of the patient's wrist can be placed in the arm-fixing sleeve 5, which also tightly fits the patient's wrist. The arm allows the arm to remain attached to the top of the pillow block 1. Inside the receiving cavity 2, a set of bidirectional screws 6 are rotatably connected. Two sets of threaded sleeves 7 are threaded to both sides of the bidirectional screws 6. Two sets of connecting rods 8 are set between the two sets of threaded sleeves 7 and the bottom of the arc-shaped support plate 3. The two ends of the connecting rods 8 are hinged to the threaded sleeves 7 and the arc-shaped support plate 3 respectively. Inside the receiving cavity 2, a drive assembly is set. Medical staff can control the bidirectional screws 6 to rotate in both directions through the drive assembly. The threads on both sides of the bidirectional screws 6 are in opposite directions. When it rotates, it can generate a reverse driving force on the two sets of threaded sleeves 7 on both sides, causing the two sets of threaded sleeves 7 to move closer or further away from each other. When the two sets of threaded sleeves 7 move closer, the two sets of connecting rods 8 will rotate upward and push the arc-shaped support plate 3 to move upward. When the two sets of threaded sleeves 7 move further away from each other, the two sets of connecting rods 8 will rotate downward and pull the arc-shaped support plate 3 to move downward.

[0018] During use, the patient places their wrist upwards on the curved support plate 3, simultaneously inserting four fingers into the finger sleeves 4 and the arm into the arm fixation sleeve 5. The finger sleeves 4 and arm fixation sleeve 5 secure the patient's wrist against the curved support plate 3, preventing displacement. Medical personnel can then control the drive assembly to rotate the bidirectional screw 6, thereby controlling the two sets of screw sleeves 7 to move closer together, causing the curved support plate 3 to move upwards. Since the patient's fingers and arm are fixed to the support block 1 by the finger sleeves 4 and arm fixation sleeve 5, the upward movement of the curved support plate 3 causes the patient's wrist to bend upwards, tightening the skin and clearly highlighting the radial artery. This facilitates accurate insertion of the puncture needle into the radial artery. Furthermore, the finger sleeves 4 and arm fixation sleeve 5 keep the patient's hand fixed during insertion, thus ensuring the smooth flow of blood into the arm. The patient experiences pain and may shake. When the puncture needle is withdrawn after the puncture sampling is completed, the medical staff controls the drive component to rotate the bidirectional screw 6 in the opposite direction, thereby controlling the two sets of screw sleeves 7 to move away from each other, causing the arc-shaped support plate 3 to move downward. At this time, the patient's wrist returns to a straight position, relaxing the skin and facilitating rapid hemostasis at the puncture site. After hemostasis, it is easier for the patient to pull their fingers and arm out from the outside of the finger sleeve 4 and arm fixation sleeve 5. In summary, when puncturing the radial artery, the finger sleeve 4 and arm fixation sleeve 5 keep the patient's wrist fixed and close to the arc-shaped support plate 3. The medical staff can then control the arc-shaped support plate 3 to move up and down by controlling the drive component. During the puncture, it can help to fully bend the patient's wrist, making the radial artery in the patient's wrist clearly visible, and preventing the patient's hand from shaking during the puncture, ensuring the smooth progress of the puncture process.

[0019] For further details, please refer to Figure 1-4 The drive assembly includes a rotating shaft 9 rotatably disposed inside the receiving cavity 2, a first bevel gear 10 connected to one end of the rotating shaft 9, and a second bevel gear 11 sleeved on the surface of the bidirectional screw 6 and meshing with the first bevel gear 10. One end of the rotating shaft 9 extends out of the side wall of the pillow block 1 and is fixedly connected to a knob 12. Medical staff can control the rotating shaft 9 to rotate by holding the knob 12. At this time, the rotating shaft 9 will drive the bidirectional screw 6 to rotate through the meshing transmission action of the first bevel gear 10 and the second bevel gear 11. As the rotation direction of the rotating shaft 9 is different, the rotating shaft 9 will drive the bidirectional screw 6 in different directions, thereby controlling the bidirectional screw 6 to rotate in both forward and reverse directions.

[0020] For further details, please refer to Figure 1-4The cavity 2 is fixedly provided with a guide hole 13, and the bottom of the arc-shaped support plate 3 is provided with a guide rod 14. The guide rod 14 is slidably connected in the guide hole 13. When the arc-shaped support plate 3 moves up and down, it will drive the guide rod 14 to move up and down. When the guide rod 14 moves, it will always slide inside the guide hole 13. At this time, the guide hole 13 and the guide rod 14 can guide the movement of the arc-shaped support plate 3, so that the arc-shaped support plate 3 can always maintain vertical movement without tilting when subjected to force.

[0021] For further details, please refer to Figure 1-4 The top surface of the arc-shaped support plate 3 is provided with a sponge pad 15. When the patient's wrist is placed on the arc-shaped support plate 3, the soft sponge pad 15 can improve the patient's comfort.

[0022] For further details, please refer to Figure 1-4 Several sets of connecting plates 16 are connected to the side wall of the pillow block 1. A sliding rod 17 is slidably installed on the connecting plate 16. A suction cup 18 is connected to the bottom end of the sliding rod 17. When the pillow block 1 is placed on the table, pressing down on the sliding rod 17 can move the suction cup 18 downward and make it stick to the table. At this time, the suction cup 18 will be attached to the table. Under this suction, the pillow block 1 on the table can be prevented from shifting. When performing radial artery puncture on the patient, the stability of the pillow block 1 can be maintained and it can be prevented from shifting under the action of external force.

[0023] For further details, please refer to Figure 1-4 The pillow block 1 has handles 19 on both sides, which make it easy for medical staff to grasp and move the pillow block 1 to the required position, thus improving portability.

[0024] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An adjustable hand fixation pillow for radial artery puncture, comprising a pillow block (1), characterized in that, The pillow block (1) has a receiving cavity (2) inside. An arc-shaped support plate (3) is slidably arranged inside the receiving cavity (2). A finger sleeve (4) is connected to the top of the pillow block (1) at the front side of the arc-shaped support plate (3). Four sets of finger sleeves (4) are arranged side by side at the front side of the arc-shaped support plate (3). An arm fixing sleeve (5) is arranged at the top of the pillow block (1) at the rear side of the arc-shaped support plate (3). A set of bidirectional screws (6) is rotatably connected inside the receiving cavity (2). Two sets of screw sleeves (7) are threadedly connected to both sides of the bidirectional screws (6). Two sets of connecting rods (8) are arranged between the two sets of screw sleeves (7) and the bottom of the arc-shaped support plate (3). The two ends of the connecting rods (8) are respectively hinged to the screw sleeves (7) and the arc-shaped support plate (3) through hinges. A drive assembly for controlling the bidirectional screws (6) to rotate in both directions is provided inside the receiving cavity (2).

2. The adjustable hand immobilization pillow for radial artery puncture according to claim 1, wherein The drive assembly includes a rotating shaft (9) rotatably disposed inside the receiving cavity (2), a first bevel gear (10) connected to one end of the rotating shaft (9), and a second bevel gear (11) sleeved on the surface of the bidirectional screw (6) and meshing with the first bevel gear (10). One end of the rotating shaft (9) extends out of the side wall of the pillow block (1) and is fixedly connected to a knob (12).

3. The adjustable hand immobilization pillow for radial artery puncture according to claim 1, wherein The cavity (2) is fixedly provided with a guide hole (13), and the bottom of the arc-shaped support plate (3) is provided with a guide rod (14), which is slidably connected in the guide hole (13).

4. The adjustable hand immobilization pillow for radial artery puncture according to claim 1, wherein The top surface of the arc-shaped support plate (3) is provided with a sponge pad (15).

5. The adjustable hand immobilization pillow for radial artery puncture according to claim 1, wherein The side wall of the pillow block (1) is connected to several sets of connecting plates (16), and a sliding rod (17) is slidably arranged on the connecting plate (16). The bottom end of the sliding rod (17) is connected to a suction cup (18).

6. The adjustable hand immobilization pillow for radial artery puncture according to claim 1, wherein The pillow block (1) has handles (19) connected to both sides.

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