A radiotherapy device for convenient immobilization of a limb

By designing a radiotherapy fixation device with adjustable angle and distance, the problems of limb fixation discomfort and length differences for patients have been solved, achieving comfortable limb fixation and accurate treatment.

CN224557932UActive Publication Date: 2026-07-28AFFILIATED HOSPITAL OF GUANGDONG MEDICAL UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
AFFILIATED HOSPITAL OF GUANGDONG MEDICAL UNIV
Filing Date
2025-01-08
Publication Date
2026-07-28

AI Technical Summary

Technical Problem

Existing radiotherapy devices cannot keep the patient's limb fixed for a long time when immobilizing it, and they cannot adapt to the differences in limb length among different patients, resulting in discomfort and inaccuracy in the treatment process.

Method used

A fixation device was designed, comprising a telescopic support rod, a lifting platform, a rotating connecting clamp, bolts, and elastic straps. By adjusting the angle and distance, it can adapt to different patients' limbs and provide a comfortable fixation method.

Benefits of technology

It achieves comfortable fixation of the patient's limbs, adapts to different limb lengths, and improves the accuracy and comfort of treatment.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN224557932U_ABST
    Figure CN224557932U_ABST
Patent Text Reader

Abstract

The utility model discloses a kind of radiotherapy devices of convenient fixed limbs, it is related to radiotherapy technical field, including base, the upper end middle of the base is provided with telescopic support rod, the sidewall middle of telescopic support rod is provided with one bolt, the upper end of telescopic support rod is provided with lifting movable stage, the sidewall of lifting movable stage is provided with fixed plate, the sidewall of fixed plate is provided with rotating head, the upper and lower outer wall of rotating head is provided with rotating connection clamping plate, the middle of rotating connection clamping plate and rotating head is provided with second bolt, the lower outer wall of second bolt is provided with nut in the lower end of rotating connection clamping plate, one side of rotating connection clamping plate is provided with mounting plate.The utility model of a kind of radiotherapy devices of convenient fixed limbs can adjust angle, let patient's arm carry out certain amplitude activity, can also adapt to the arm length of different patients, it is more convenient to use.
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Description

Technical Field

[0001] This utility model relates to the field of radiotherapy technology, and in particular to a radiotherapy device for convenient limb immobilization. Background Technology

[0002] Radiation therapy for tumors is a local treatment method that uses radiation to treat tumors. Approximately 40% of cancers can be cured with radiation therapy. The role and importance of radiation therapy in tumor treatment is increasingly prominent, and it has become one of the main methods for treating malignant tumors. During radiation therapy, it is necessary to immobilize the patient's limbs to prevent movement. Maintaining the patient's position during localization is the first step in radiation therapy and continues throughout the entire process. Reducing involuntary movements of the patient during radiation therapy and reiterating the position during localization are key steps in ensuring accurate radiation therapy.

[0003] Existing radiotherapy devices require prolonged immobilization of the patient's limbs, causing significant discomfort. Furthermore, the varying limb lengths of different patients make these immobilization devices unsuitable, negatively impacting the radiotherapy process. To address these shortcomings, we propose a radiotherapy device that facilitates limb immobilization. Utility Model Content

[0004] The main objective of this invention is to provide a convenient device for fixing limbs in radiotherapy, which can effectively solve the problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A radiotherapy device for convenient limb fixation includes a base. A telescopic support rod is located at the upper center of the base. A bolt of type 1 is located at the center of the side wall of the telescopic support rod. A lifting platform is located at the upper end of the telescopic support rod. A fixing plate is located on the side wall of the lifting platform. A rotating head is located on the side wall of the fixing plate. Rotating connecting plates are located on both the upper and lower outer walls of the rotating head. A bolt of type 2 is located between the rotating connecting plates and the rotating head. A nut is located on the lower outer wall of the bolt at the lower end of the rotating connecting plates. A mounting plate is located on one side of the rotating connecting plates. One side wall of the mounting plate also... The system is equipped with two sets of telescopic rods and one set of threaded sleeves. The threaded sleeves are positioned between the two sets of telescopic rods, and a threaded rod is located at the middle of the front end of the threaded sleeve. A motor is installed inside the mounting plate and is connected to the rear end of the threaded sleeve. A rotating platform is installed at the front end of the two sets of telescopic rods and the threaded rod. A limb fixation frame is installed at the upper end of both the rotating platform and the lifting platform. Two sets of elastic straps are installed at the upper end of each limb fixation frame. Four sets of omnidirectional brake wheels are installed at the lower end of the base. Fixed support frames are installed at the four corners of the upper end of the base. A radiotherapy device is installed at the upper end of the four sets of fixed support frames.

[0007] Preferably, a threaded hole is provided between the No. 1 bolt and the side wall of the telescopic support rod, and the No. 1 bolt is threadedly connected to the side wall of the telescopic support rod through the provided threaded hole.

[0008] Preferably, both the rotating head and the rotating connecting plate have through holes in the middle, and the diameter of the No. 2 bolt is slightly smaller than the through hole in the middle of the rotating head and the rotating connecting plate. The rotating head and the rotating connecting plate are rotatably connected by the No. 2 bolt.

[0009] Preferably, the nut has a threaded hole in the middle, and the nut is threadedly connected to the No. 2 bolt through the threaded hole.

[0010] Preferably, a rotating interface is provided between the rear end of the threaded sleeve and the side wall of the mounting plate, the threaded sleeve is rotatably connected to the side wall of the mounting plate through the rotating interface, and the threaded rod is threadedly connected to the threaded sleeve.

[0011] Preferably, the elastic strap is made of elastic leather material, and the limb fixation frame is wrapped with a soft material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. In this utility model, the rotating platform, rotating connecting clamp, rotating head, No. 2 bolt, and nut allow the limb fixation device to move at a certain angle. When the patient's arm is fixed, the angle between the rotating platform and the base can be adjusted, allowing the patient's forearm and upper arm to move within a certain range. This allows the patient's arm to move appropriately after being fixed for a long time, or the angle can be adjusted according to the patient's comfortable posture, making the treatment more comfortable. The No. 2 bolt and nut can fix the rotating connecting clamp and the rotating head. After the angle is adjusted, they can be fixed to prevent independent rotation. The telescopic support rod and No. 1 bolt can adjust the height of the device to adapt to different usage environments and make the device more convenient to use.

[0014] 2. In this utility model, the threaded sleeve, threaded rod, and telescopic rod can adjust the distance between the rotating platform and the lifting platform, allowing the device to adapt to patients with different arm lengths. This makes the device more widely applicable and more convenient to use. Furthermore, the elastic strap is made of elastic material, making it very easy to fix. The limb fixation frame is wrapped with soft material, which provides comfortable support for the patient's arm and improves patient comfort during use. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the lifting structure of the lifting platform of this utility model;

[0017] Figure 3 This is a schematic diagram of the connection structure between the fixing plate and the mounting plate of this utility model;

[0018] Figure 4 This is a schematic diagram of the threaded sleeve connection structure of this utility model.

[0019] In the diagram: 1. Base; 2. Telescopic support rod; 3. Lifting platform; 4. Limb fixation frame; 5. Elastic strap; 6. Rotating platform; 7. Universal brake wheel; 8. Bolt No. 1; 9. Fixing plate; 10. Rotating head; 11. Rotating connecting clamp; 12. Bolt No. 2; 13. Nut; 14. Mounting plate; 15. Threaded sleeve; 16. Threaded rod; 17. Telescopic rod; 18. Motor; 19. Fixed support frame; 20. Radiotherapy device. Detailed Implementation

[0020] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0021] like Figures 1-2 As shown, the base 1 is used to support the device. A telescopic support rod 2 is located at the upper center of the base 1. The telescopic support rod 2 can extend and retract. A bolt 8 is located in the middle of the side wall of the telescopic support rod 2, which can fix the extension length of the telescopic support rod 2. A lifting platform 3 is located at the upper end of the telescopic support rod 2. The height of the lifting platform 3 can be adjusted using the telescopic support rod 2 and the bolt 8. A fixing plate 9 is located on the side wall of the lifting platform 3, and the fixing plate 9 is fixed to the side wall of the lifting platform 3. A rotating head 10 is located on the side wall of the fixing plate 9. 9 is used to install the rotating head 10. The upper and lower outer walls of the rotating head 10 are provided with rotating connecting plates 11. The rotating head 10 can rotate in the middle of the rotating connecting plates 11. A second bolt 12 is provided in the middle of the rotating connecting plates 11 and the rotating head 10. A through hole is provided between the second bolt 12, the rotating connecting plates 11, and the rotating head 10. The diameter of the second bolt 12 is slightly smaller than the through hole between the rotating connecting plates 11 and the rotating head 10. The second bolt 12 passes through the through hole in the middle of the rotating connecting plates 11 and the rotating head 10. The rotating connecting plates 11 and the rotating head 10 are connected by... Bolt 12 rotates around a pivot. A nut 13 is located on the lower outer wall of bolt 12 at the lower end of the rotating connecting plate 11. A threaded hole is located in the center of nut 13, which is threaded into bolt 12. Rotating nut 13 fixes the rotating head 10 to the rotating connecting plate 11. A mounting plate 14 is located on one side of the rotating connecting plate 11. Limb fixation frames 4 are located at the upper ends of both the rotating platform 6 and the lifting platform 3. These limb fixation frames 4 support the patient's arm. Two sets of springs are located at the upper end of each limb fixation frame 4. The elastic bandage 5 is used to fix the patient's arm to the upper end of the limb fixation frame 4. The elastic bandage 5 is made of elastic leather material. The limb fixation frame 4 is covered with soft material to make the patient more comfortable. The lower end of the base 1 is equipped with four sets of universal brake wheels 7, which facilitate the movement of the device. The upper end of the base 1 is equipped with fixed support frames 19 at the four corners. The upper end of the four sets of fixed support frames 19 is equipped with a radiotherapy device 20. The fixed support frames 19 are used to support and fix the radiotherapy device 20, which is used to perform radiotherapy on the patient.

[0022] like Figures 3-4As shown, two sets of telescopic rods 17 and a set of threaded sleeves 15 are also provided on one side wall of the mounting plate 14. The threaded sleeves 15 are located between the two sets of telescopic rods 17. A rotating interface is provided between the rear end of the threaded sleeves 15 and the side wall of the mounting plate 14. The threaded sleeves 15 can rotate on the side wall of the mounting plate 14 through the rotating interface. A threaded rod 16 is provided in the middle of the front end of the threaded sleeves 15. The threaded rod 16 is threadedly connected to the threaded sleeves 15. A motor 18 is provided inside the mounting plate 14. The motor 18 is connected to the rear end of the threaded sleeves 15. The motor 18 can drive the threaded sleeves 15 to rotate. A rotating movable platform 6 is provided at the front end of the two sets of telescopic rods 17 and the threaded rod 16. When the threaded sleeves 15 rotate, the threaded rod 16 can move in the middle of the threaded sleeves 15, driving the rotating movable platform 6 to move and adjusting the distance between the rotating movable platform 6 and the lifting movable platform 3.

[0023] It should be noted that this utility model is a radiotherapy device for convenient limb fixation. In use, rotating the first bolt 8 outward allows the height of the lifting platform 3 and the rotating platform 6 to be adjusted by the telescopic movement of the telescopic support rod 2. Rotating the first bolt 8 inward fixes the length of the telescopic support rod 2. Rotating the nut 13 downward allows the mounting plate 14 to rotate on one side of the fixing plate 9 by rotating the connecting clamp 11 and the rotating head 10, adjusting the angle between the rotating platform 6 and the lifting platform 3. Rotating the nut 13 upward fixes the rotating head 10 and the connecting clamp 11, fixing the angle between the rotating platform 6 and the lifting platform 3. The motor 18 inside the mounting plate 14 starts, driving the threaded sleeve 15 to rotate. The threaded rod 16 moves in the middle of the threaded sleeve 15, adjusting the distance between the rotating platform 6 and the lifting platform 3 to suit the patient's arm length. The patient's arm passes between the limb fixation frame 4 and the elastic band 5 and is fixed by the elasticity of the elastic band 5. Then, the radiotherapy device 20 treats the patient.

[0024] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A radiotherapy device for convenient limb fixation, comprising a base (1), characterized in that: A telescopic support rod (2) is provided at the middle of the upper end of the base (1). A bolt (8) is provided at the middle of the side wall of the telescopic support rod (2). A lifting platform (3) is provided at the upper end of the telescopic support rod (2). A fixing plate (9) is provided on the side wall of the lifting platform (3). A rotating head (10) is provided on the side wall of the fixing plate (9). Rotating connecting plates (11) are provided on both the upper and lower outer walls of the rotating head (10). A bolt (12) is provided in the middle of the rotating connecting plate (11) and the rotating head (10). A nut (13) is provided on the lower outer wall of the bolt (12) at the lower end of the rotating connecting plate (11). A mounting plate (14) is provided on one side of the rotating connecting plate (11). Two sets of telescopic rods (17) and a set of screws are also provided on one side wall of the mounting plate (14). The threaded sleeve (15) is located between two sets of telescopic rods (17). A threaded rod (16) is provided in the middle of the front end of the threaded sleeve (15). A motor (18) is provided inside the mounting plate (14). The motor (18) is connected to the rear end of the threaded sleeve (15). A rotating platform (6) is provided at the front end of the two sets of telescopic rods (17) and the threaded rod (16). A limb fixation frame (4) is provided at the upper end of the rotating platform (6) and the lifting platform (3). Two sets of elastic straps (5) are provided at the upper end of the limb fixation frame (4). Four sets of universal brake wheels (7) are provided at the lower end of the base (1). Fixed support frames (19) are provided at the four corners of the upper end of the base (1). A radiotherapy device (20) is provided at the upper end of the four sets of fixed support frames (19).

2. The radiotherapy device for convenient limb fixation according to claim 1, characterized in that: A threaded hole is provided between the No. 1 bolt (8) and the side wall of the telescopic support rod (2), and the No. 1 bolt (8) is threadedly connected to the side wall of the telescopic support rod (2) through the provided threaded hole.

3. The radiotherapy device for convenient limb immobilization according to claim 1, characterized in that: Both the rotating head (10) and the rotating connecting plate (11) have through holes in the middle. The diameter of the second bolt (12) is slightly smaller than the through hole in the middle of the rotating head (10) and the rotating connecting plate (11). The rotating head (10) and the rotating connecting plate (11) are rotatably connected by the second bolt (12).

4. The radiotherapy device for convenient limb fixation according to claim 1, characterized in that: The nut (13) has a threaded hole in the middle, and the nut (13) is threadedly connected to the second bolt (12) through the threaded hole.

5. A radiotherapy device for convenient limb immobilization according to claim 1, characterized in that: A rotating interface is provided between the rear end of the threaded sleeve (15) and the side wall of the mounting plate (14). The threaded sleeve (15) is rotatably connected to the side wall of the mounting plate (14) through the rotating interface. The threaded rod (16) is threadedly connected to the threaded sleeve (15).

6. A radiotherapy device for convenient limb immobilization according to claim 1, characterized in that: The elastic strap (5) is made of elastic leather material, and the limb fixation frame (4) is wrapped with soft material.