Arm-lifting CT (Computed Tomography) examination support
By designing an arm-raising CT examination bracket, the problem of lack of arm support for patients during CT examinations has been solved, achieving stable fixation and restraint, and improving the comfort of the examination and the image quality.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-13
- Publication Date
- 2026-03-06
AI Technical Summary
When patients undergo elbow CT scans, the lack of arm support causes discomfort and arm tremors, affecting image quality.
Design an arm-lifting CT examination bracket, including a backplate, base, arm rod, horizontal bar and arm support, which achieves stable fixation through gear joint pair, and provides support and restraint by straps to restrain the arm.
It effectively supports the patient's elbow and forearm, reducing pain and arm tremors during the examination and ensuring image clarity.
Smart Images
Figure CN223969123U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to an arm-raising CT examination bracket. Background Technology
[0002] CT arthrography is a mature imaging technique that first appeared in radiology literature in the late 1970s and early 1980s. It is used to assess the integrity of intra-articular structures such as the cruciate ligaments of the knee joint. Injecting an iodine contrast agent into the joint improves the visibility of intra-articular structures such as cartilage and ligaments. Therefore, this imaging modality combines the powerful capabilities and high spatial resolution of CT with the diagnostic power of arthrography, providing clinicians with detailed visualizations of joint structures.
[0003] Compared to MRI arthrography, CT arthrography does not require patients to remain in one position for extended periods. However, due to factors such as car accidents, patients with elbow and shoulder injuries often have limited mobility. If a patient lies directly on the CT table, their forearm will be suspended in the air without support, and any movement of the elbow and shoulder will cause greater pain. It may also cause the patient's arm to involuntarily shake during the examination, resulting in blurred images.
[0004] Therefore, to address the above shortcomings, there is a need to provide an arm-raising CT examination bracket. Utility Model Content
[0005] (a) Technical problems to be solved
[0006] The technical problem to be solved by this invention is to address the issue of patients not having support for their arms when undergoing elbow examinations.
[0007] (II) Technical Solution
[0008] To solve the above-mentioned technical problems, this utility model provides an arm-raising CT examination bracket, including a back plate, a base, an arm rod, a horizontal bar, and an arm support. The back plate is placed on the CT bed so that the patient's back is against the back plate. Two bases are placed on both sides of the back plate. One end of the arm rod is hinged to the base, and the other end of the arm rod is hinged to the horizontal bar. The horizontal bar is horizontal in the length direction. A crossbeam is fixed between the two horizontal bars. The arm support is fixed between the two horizontal bars. The arm support is arc-shaped to support the patient's forearm bent forward towards the head. The patient's elbow rests on the crossbeam.
[0009] As a further explanation of this utility model, preferably, the crossbeam is a cylindrical rod, with two crossbeams placed at both ends of the length of the horizontal rod, and the distance between the crossbeams is less than the width of the arm support.
[0010] As a further explanation of this utility model, preferably, two sets of straps are fixedly connected at intervals on the top surface of the arm support, each set of straps consisting of two strips of cloth with Velcro, and the straps cover the patient's wrist.
[0011] As a further explanation of this utility model, preferably, the arm is threadedly connected to the base and the flat rod at the connection end, and the handwheel is rotated to make the arm and the base and the flat rod interference fit.
[0012] As a further explanation of this utility model, preferably, a gear joint is installed in the base and the flat rod. The gear joint includes a fixed wheel, a moving wheel and triangular teeth. The fixed wheel is fixedly connected in the base and the flat rod. One side of the moving wheel is rotatably connected to the fixed wheel, and the other side of the moving wheel is fixedly connected to the arm. Several triangular teeth are distributed in a ring at intervals on the contact surface of the fixed wheel and the moving wheel, and the triangular teeth of the fixed wheel and the moving wheel mesh with each other.
[0013] As a further explanation of this utility model, preferably, a connecting rod is inserted inside the fixed wheel and the moving wheel, one end of the connecting rod is fixedly connected to a limit plate, and a spring is sleeved on the connecting rod between the limit plate and the fixed wheel; the other end of the connecting rod extends out of the arm and is threadedly connected to the handwheel.
[0014] As a further explanation of this utility model, preferably, the back plate is a convex-shaped plate with a thickness of no more than 10mm and a width of more than 200mm.
[0015] As a further explanation of this utility model, preferably, a headrest is placed in the middle of the back panel.
[0016] As a further explanation of this utility model, preferably, a groove is provided in the middle of the back panel, and a block is fixedly connected to the bottom of the headrest. The block is embedded in the groove so that the headrest can move along the length of the groove.
[0017] (III) Beneficial Effects
[0018] The above-mentioned technical solution of this utility model has the following advantages:
[0019] This invention provides support for the patient's elbow and forearm by adding a support that can rotate along the shoulder joint to the CT bed. At the same time, it restrains the forearm, reducing the patient's pain in the arm during the examination and effectively limiting arm tremors. This also prevents the formation of ghost images that could affect the doctor's judgment of the internal condition of the elbow joint during imaging. Attached Figure Description
[0020] Figure 1 This is a diagram illustrating the effect of using this utility model;
[0021] Figure 2 This is the assembly structure diagram of this utility model;
[0022] Figure 3 This is a structural diagram of the gear joint pair of this utility model;
[0023] Figure 4 This is a cross-sectional view of the gear joint of this utility model.
[0024] In the diagram: 1. Backplate; 11. Slide groove; 2. Base; 3. Arm; 4. Horizontal bar; 41. Crossbeam; 5. Arm support; 51. Straps; 6. Gear joint pair; 61. Fixed wheel; 62. Moving wheel; 63. Triangular gear; 64. Limiting plate; 65. Spring; 66. Connecting rod; 7. Handwheel; 8. Headrest; 9. CT bed. Detailed Implementation
[0025] 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, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] A type of arm-lifting CT examination stent, combined with Figure 1 , Figure 2 The system includes a backplate 1, a base 2, an arm bar 3, a horizontal bar 4, and an arm support 5. The backplate 1 is placed on the CT bed 8 so that the patient's back is against the backplate 1. Two bases 2 are placed on both sides of the backplate 1. One end of the arm bar 3 is hinged to the base 2, and the other end of the arm bar 3 is hinged to the horizontal bar 4. The horizontal bar 4 is horizontal in the length direction. A crossbeam 41 is fixed between the two horizontal bars 4. The arm support 5 is fixed between the two horizontal bars 4. The arm support 5 is arc-shaped to support the patient's forearm bent forward, and the patient's elbow rests on the crossbeam 41.
[0027] Combination Figure 1 , Figure 2 The backplate 1 is a convex-shaped non-metallic plate with a thickness not exceeding 10mm. It can fix the support position using the patient's own weight and reduce patient discomfort while lying on the CT bed. The width of the backplate 1 along the length of the CT bed 9 should be greater than 200mm to improve fixation and prevent the backplate 1 from bending upwards and causing back discomfort. A sliding groove 11 is provided in the middle of the backplate 1, on which a headrest 8 is placed. The headrest 8 has an arc-shaped structure to support the patient's head and neck. A block is fixed to the bottom of the headrest 8, which is embedded in the sliding groove 11, allowing the headrest 8 to move along the length of the groove 11. This sliding headrest 8 can be adjusted according to the patient's body shape and height, allowing the patient to place their arm on the armrest 5 while providing good head and neck support, thus providing a more comfortable examination environment for injured patients. Furthermore, the combination of the block and the sliding groove 11 facilitates the installation and removal of the headrest 8 and reduces production costs.
[0028] Combination Figure 1 , Figure 2The base 2 is a non-metallic block shell, while the arm 3 and flat bar 4 are non-metallic long strip rods. The arm 3 is designed to simulate the movement relationship between the upper arm and shoulder joint, allowing the support to adapt to different patients' arm-raising postures and angles, thus improving its applicability. The crossbeam 41 is a non-metallic cylindrical rod, with two crossbeams 41 positioned at opposite ends of the flat bar 4 along its length, the distance between the crossbeams 41 being less than the width of the arm support 5. Using two crossbeams 41 to support the arm support 5 provides stable support and effectively reduces the weight of the support. Furthermore, the distance between the crossbeams 41 allows the elbow joint to be exposed, minimizing the impact of the support on imaging results during CT scans. The arm support 5 is also non-metallic, with two sets of straps 51 fixedly connected at intervals on the inner arc top surface of the arm support 5. Each set of straps 51 consists of two strips of cloth with Velcro fasteners. The straps 51 can cover the patient's wrist for restraint. If the patient's arm trembles significantly, both straps 51 can be tied to the patient's forearm and wrist to enhance fixation.
[0029] Combination Figure 2 , Figure 3 A gear joint 6 is installed inside the base 2 and the flat rod 4. The gear joint 6 is also made of non-metallic material, preferably epoxy resin. The gear joint 6 includes a fixed wheel 61, a moving wheel 62, and triangular teeth 63. The fixed wheel 61 is fixedly connected to the base 2 and the flat rod 4. One side of the moving wheel 62 is rotatably connected to the fixed wheel 61, and the other side of the moving wheel 62 is fixedly connected to the arm 3. Several triangular teeth 63 are distributed in a ring at intervals on the contact surface of the fixed wheel 61 and the moving wheel 62, and the triangular teeth of the fixed wheel 61 and the moving wheel 62 mesh with each other. By setting the gear joint 6, the arm 3 can be stably matched with the base 2 and the flat rod 4. When adjusting the angle of the arm 3 and the height of the arm support 5, it can automatically stop without external force and is not affected by gravity. Compared with the traditional shaft connection, it can be adjusted in one go without correction.
[0030] Combination Figure 2 , Figure 4 A connecting rod 66 passes through the fixed wheel 61 and the moving wheel 62. One end of the connecting rod 66 is fixedly connected to a limiting plate 64. A spring 65 is sleeved on the connecting rod 66 between the limiting plate 64 and the fixed wheel 61. The other end of the connecting rod 66 extends out of the arm 3 and is threaded to a handwheel 7. The handwheel 7 is plum blossom shaped and is located outside the arm 3 and abuts against the arm 3.
[0031] When examining a patient, the support is placed on the CT bed 9, with the arm 3 in a horizontal position. The patient lies on the CT bed 9 with their back against the backrest 1. The arm to be examined is supported by one hand by a medical staff member, while the other hand pulls the arm support 5 up until it contacts the patient's forearm. Then, the handwheel 7 is rotated to firmly engage the fixed wheel 61 and the moving wheel 62. At this point, the arm 3 is interference-fitted with the base 2 and the horizontal bar 4, preventing the arm 3 from rotating independently, thus completing the fixation. Finally, the patient's wrist or arm is secured with the strap 51, providing support to prevent the arm from dangling and increasing the patient's discomfort and pain.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A CT examination support with arms that lift, characterized in that: The utility model provides a kind of CT patient's arm support, including backboard (1), pedestal (2), arm lever (3), flat bar (4) and arm support (5), backboard (1) is placed on CT bed (9) to make patient back paste on backboard (1), two pedestal (2) are placed in backboard (1) two sides, arm lever (3) one end is hinged in pedestal (2), arm lever (3) other end is hinged with flat bar (4), flat bar (4) length direction is horizontal, two flat bars (4) are fixed between two flat bars (4) and are connected with crossbeam (41), arm support (5) is fixed between two flat bars (4), arm support (5) is arc-shaped to support the small arm of patient bending forward to head, patient elbow is placed on crossbeam (41).
2. A CT examination support according to claim 1, characterized in that: Crossbeam (41) is cylindrical rod, two crossbeams (41) are placed in two ends of flat bar (4) length direction, crossbeam (41) spacing is less than the width of arm support (5).
3. A CT examination support according to claim 2, wherein: Arm support (5) top end face is fixed with two groups of bandage (51) at intervals, each group of bandage (51) is composed of two cloth strips with magic buckle, and bandage (51) covers the wrist of patient.
4. The gantry of claim 3, wherein: Arm lever (3) is connected with the threaded connection of pedestal (2), flat bar (4) connection end and hand wheel (7), rotates hand wheel (7) to make arm lever (3) and pedestal (2), flat bar (4) interference fit.
5. A CT examination support according to claim 4, wherein: Pedestal (2) and flat bar (4) are installed with gear joint pair (6) in, gear joint pair (6) includes fixed gear (61), movable gear (62) and triangular tooth (63), fixed gear (61) is fixed in pedestal (2) and flat bar (4), movable gear (62) one side is rotatably connected with fixed gear (61), movable gear (62) other side is fixedly connected with arm lever (3), a plurality of triangular tooth (63) is annularly spaced distribution on the contact surface of fixed gear (61) and movable gear (62), and the triangular tooth (63) of fixed gear (61) and movable gear (62) is engaged.
6. A CT examination support according to claim 5, wherein: Fixed gear (61) and movable gear (62) are penetrated with connecting rod (69), one end of connecting rod (69) is fixedly connected with limiting plate (64), spring (65) is sleeved on the connecting rod (69) between limiting plate (64) and fixed gear (61);The other end of connecting rod (69) is stretched out of arm lever (3) and is connected with hand wheel (7) with screw thread.
7. A CT examination support according to claim 6, characterized in that: Backboard (1) is convex letter-shaped plate material, and the thickness of backboard (1) is not more than 10 mm thick.
8. A CT examination support according to claim 7, characterized in that: Headrest (8) is placed in the middle of backboard (1).
9. A CT examination support according to claim 8, characterized in that: Backboard (1) middle part is provided with a sliding groove (11), and the bottom of headrest (8) is fixedly connected with a square block, which is embedded in the sliding groove (11) to move the headrest (8) along the length direction of the sliding groove (11).