Arm fixator for radiotherapy

Abstract

The utility model relates to the field of medical instruments, and discloses an arm fixer for radiotherapy, which comprises a bottom plate, an adjusting component is arranged in the bottom plate, a fixing component is arranged on the upper surface of the bottom plate, a supporting component is arranged on the right surface of the bottom plate, the adjusting component comprises a grip, a worm is fixedly connected to the front surface of the grip, and a fixing component is arranged on the upper surface of the fixing component. A worm gear is rotatably connected to the inner wall of the bottom end of the bottom plate, a rotating plate is fixedly connected to the upper surface of the worm gear, a connecting rod is hinged to the left end of the rotating plate, the grip penetrates through and is rotatably connected to the rear surface of the bottom plate, and the worm gear is meshed with a worm. According to the arm fixing device, through cooperation of the supporting frame, the adjusting rod, the first pull rod, the compression spring, the first sliding block, the arm frame, the adjusting frame, the second pull rod, the limiting spring and the second sliding block, the width and the height of the arm fixing device can be flexibly adjusted, the device can be flexibly adjusted according to the length of the arm of a patient, and the practicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an arm fixator for radiotherapy. Background Art

[0002] Radiotherapy is a medical treatment method that uses high-energy electromagnetic waves or particle beams to irradiate parts of the patient's body to kill cancer cells or control their growth. Radiotherapy is commonly used to treat various types of cancer, usually as a supplement or alternative to surgery, chemotherapy or other treatments. Some patients put their arms on their foreheads during radiotherapy. Pressing the forehead with the arm for a long time can easily lead to poor blood flow to the head. After the radiotherapy is over, the patient is prone to dizziness and other discomfort when getting up. In order to prevent this, a radiotherapy arm fixator is often placed on the bed to fix the patient's arm.

[0003] However, traditional arm fixators for radiotherapy are fixed in size and cannot be flexibly adjusted according to the size of the patient's arm, which can easily lead to the patient's arm being unable to be placed at a comfortable angle. After long-term testing, it can easily lead to blood circulation problems in the patient's arm, causing discomfort. In addition, the patient's neck is generally not supported. After long-term testing, the patient's neck is prone to discomfort. At the same time, the patient's head often swings during radiotherapy, and the swinging head can easily affect the accuracy of the test. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides an arm fixator for radiotherapy, which aims to improve the problem that the arm fixator for radiotherapy in the prior art is fixed in size and cannot be flexibly adjusted according to the size of the patient's arm, which easily leads to the patient's arm being unable to be placed at a comfortable angle. After long-term testing, it is easy to cause blood circulation in the patient's arm, causing discomfort.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an arm fixer for radiotherapy, comprising a base plate, an adjustment component is arranged inside the base plate, a fixing component is arranged on the upper surface of the base plate, a supporting component is arranged on the right surface of the base plate, the adjustment component comprises a handle, a worm is fixedly connected to the front surface of the handle, a worm wheel is rotatably connected to the inner wall of the bottom end of the base plate, a rotating plate is fixedly connected to the upper surface of the worm wheel, and a connecting rod is hinged at the right end of the rotating plate.

[0006] As a further description of the above technical solution:

[0007] The handle penetrates through and is rotatably connected to the rear surface of the base plate, and the worm wheel is meshed with the worm.

[0008] As a further description of the above technical solution:

[0009] The adjustment assembly also includes a connecting block, which penetrates through and is slidably connected to the upper surface of the bottom plate, and the lower surface of the connecting block is fixedly connected to the upper surface of the connecting rod.

[0010] As a further description of the above technical solution:

[0011] The fixing assembly comprises a splint, a sponge pad is fixedly connected to the left surface of the splint, and a neck support is fixedly connected to the front surface of the splint.

[0012] As a further description of the above technical solution:

[0013] The lower surface of the splint is fixedly connected to the upper surface of the connecting block. The splint, sponge pad, neck support and connecting block are provided in two groups, and the two groups of splints, sponge pads, neck support and connecting blocks are symmetrically distributed about the center line of the bottom plate.

[0014] As a further description of the above technical solution:

[0015] The support assembly includes a support frame, an adjusting rod is penetrated and slidably connected to the upper surface of the support frame, a limiting groove is provided on the rear surface of the adjusting rod, a slider is elastically connected to the inner wall of the support frame through a compression spring, a pull rod is penetrated and fixedly connected to the rear surface of the slider, an arm frame is fixedly connected to the left surface of the adjusting rod, the adjusting frame is penetrated and slidably connected to the left surface of the arm frame, an arm baffle is fixedly connected to the upper surface of the adjusting frame, a limiting groove is provided on the rear surface of the adjusting frame, a slider is elastically connected to the inner wall of the arm frame through a limiting spring, and a pull rod is penetrated and fixedly connected to the rear surface of the slider.

[0016] As a further description of the above technical solution:

[0017] The left surface of the support frame is fixedly connected to the right surface of the base plate, the pull rod 1 is inserted into the inner wall of the limit groove 1, the slider 1 is slidably connected to the inner wall of the support frame, one end of the compression spring is fixedly connected to the rear surface of the slider 1, and the other end of the compression spring is fixedly connected to the inner wall of the rear side of the support frame, and the pull rod 1 penetrates and is slidably connected to the rear surface of the support frame.

[0018] As a further description of the above technical solution:

[0019] The arm frame is configured to be L-shaped, the slider 2 is slidably connected to the inner wall of the arm frame, one end of the limit spring is fixedly connected to the rear surface of the slider 2, the other end of the limit spring is fixedly connected to the inner wall of the rear side of the arm frame, the pull rod 2 passes through and is slidably connected to the rear surface of the arm frame, and the pull rod 2 is inserted into the inner wall of the limit slot 2.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, through the cooperation of the support frame, the adjustment rod, the pull rod 1, the compression spring, the slider 1, the arm frame, the adjustment frame, the pull rod 2, the limit spring and the slider 2, the width and height of the arm fixer can be flexibly adjusted, so that the device can be flexibly adjusted according to the length of the patient's arm, thereby enhancing the practicality of the device.

[0022] 2. In the utility model, the patient's head can be fixed and support can be provided for the patient's neck through the cooperation of the handle, worm, worm wheel, rotating plate, connecting rod, connecting block and fixing assembly, thereby reducing the patient's discomfort during radiotherapy and ensuring that the patient's head position is fixed during radiotherapy, thereby ensuring the accuracy of detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic front view of the three-dimensional structure of the overall device in the utility model;

[0024] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the bottom plate of the utility model;

[0025] Figure 3 It is a schematic diagram of the three-dimensional structure section of the support frame, the adjustment rod, the arm frame, and the adjustment frame in the utility model;

[0026] Figure 4 It is a front view schematic diagram of the three-dimensional structure of the support frame, the adjustment rod, the arm frame and the adjustment frame in the utility model.

[0027] Legend:

[0028] 1. Base plate; 21. Handle; 22. Worm; 23. Worm wheel; 24. Turntable; 25. Connecting rod; 26. Connecting block; 31. Clamp; 32. Sponge pad; 33. Neck support; 41. Support frame; 42. Adjusting rod; 43. Pull rod 1; 44. Compression spring; 45. Slider 1; 401. Limiting slot 1; 46. Arm frame; 47. Adjusting frame; 48. Pull rod 2; 49. Limiting spring; 411. Slider 2; 402. Limiting slot 2; 412. Arm baffle; 413. Block. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Reference Figure 1 - Figure 2 The utility model provides an embodiment of an arm fixator for radiotherapy, comprising a base plate 1 for supporting the overall device, the base plate 1 can be placed on a bedside or a desktop for use, the lower surface of the base plate 1 is made of rubber material and has strong friction, and when in use, it can be directly placed on the bedside, and under the pressure of the device's own weight, the device will remain stable due to friction and will not slide, and when the device needs to be taken, just pull the device upward, an adjustment component is provided inside the base plate 1, and the adjustment component can adjust the spacing of the fixing components according to the width of the patient's head, the thickness of the base plate 1 is relatively thin and will not affect the placement of the headrest, and the headrest can be placed between the fixing components, and a fixing component is provided on the upper surface of the base plate 1, and the fixing component can fix the patient's head to prevent the patient from receiving During radiotherapy, the movement of the head causes deviation, and the fixing component can provide support for the patient's neck to reduce the discomfort of the patient when using it. A supporting component is provided on the right surface of the base plate 1, which can provide support for the patient's arm. The adjusting component includes a handle 21, which is convenient for grasping. A worm 22 is fixedly connected to the front surface of the handle 21, and rotating the handle 21 can drive the worm 22 to rotate synchronously. A worm gear 23 is rotatably connected to the inner wall of the bottom end of the base plate 1, and a rotating plate 24 is fixedly connected to the upper surface of the worm gear 23. When the worm gear 23 rotates, it can drive the rotating plate 24 to rotate synchronously. The center of the worm gear 23 and the center of the rotating plate 24 are located on the same vertical line. A connecting rod 25 is hinged on the right end of the rotating plate 24, and when the rotating plate 24 rotates, it can drive the connecting rod 25 to rotate.

[0031] Reference Figure 1 - Figure 2 The handle 21 passes through and is rotatably connected to the rear surface of the base plate 1, and the worm wheel 23 and the worm 22 are meshed. The worm wheel 23 and the worm 22 are prior art and can be implemented by technicians in this field. Since they are prior art, they will not be described in detail in this case. The transmission ratio of the worm wheel 23 and the worm 22 is 10:1, that is, the worm 22 rotates 10 circles to drive the worm wheel 23 to rotate only one circle, which can improve the adjustment accuracy, and the worm wheel 23 and the worm 22 are self-locking, the worm 22 can drive the worm wheel 23 to rotate, and the worm wheel 23 cannot drive the worm 22 to rotate, which can ensure the stability of the device.

[0032] Reference Figure 1 - Figure 2 The adjustment component also includes a connecting block 26, which passes through and is slidably connected to the upper surface of the base plate 1, sliding laterally. The upper surface of the connecting block 26 is horizontal to the upper surface of the base plate 1, and the lower surface of the connecting block 26 is fixedly connected to the upper surface of the connecting rod 25. When the connecting rod 25 rotates, it can drive the connecting block 26 to move.

[0033] Reference Figure 1 - Figure 2The fixing assembly includes a splint 31, a sponge pad 32 is fixedly connected to the left surface of the splint 31, the sponge pad 32 is soft in texture and can prevent the patient from being uncomfortable due to excessive clamping. The front surface of the splint 31 is fixedly connected to a neck support 33, and the upper surface of the neck support 33 is an arc surface, which can fit the patient's neck and provide support for the patient's neck.

[0034] Reference Figure 1 - Figure 2 The lower surface of the splint 31 is fixedly connected to the upper surface of the connecting block 26, and the splint 31 and the connecting block 26 will move synchronously. The splint 31, the sponge pad 32, the neck support 33, and the connecting block 26 are provided with two groups. The two groups of splints 31, the sponge pad 32, the neck support 33, and the connecting block 26 are symmetrically distributed with respect to the center line of the base plate 1, and can fix the patient's head from both sides at the same time, and can keep the patient's head in a centered position, so that medical staff can perform radiotherapy on the patient, and the neck support 33 can support the patient's neck to ensure that the patient's neck 33 does not feel uncomfortable.

[0035] Reference Figure 1 , Figure 3 , Figure 4The support assembly includes a support frame 41, the upper surface of the support frame 41 is penetrated and slidably connected with an adjustment rod 42, the left surfaces of the support frame 41 and the adjustment rod 42 are marked with scales, and the height adjusted by the support frame 41 can be intuitively seen by observing the scales, and a limiting groove 401 is provided on the rear surface of the adjustment rod 42, and the limiting groove 401 is provided with multiple groups of rear surfaces of the adjustment rod 42 that are evenly distributed longitudinally, and the inner wall of the support frame 41 is elastically connected with a slider 45 through a compression spring 44, and the rear surface of the slider 45 is penetrated and fixedly connected with a pull rod 43, and the pull rod 43 and the slider 45 will move synchronously, and the left surface of the adjustment rod 42 is fixedly connected with an arm frame 46, and the left surface of the arm frame 46 is penetrated and slidably connected with an adjustment frame 47, and the outer walls of the arm frame 46 and the adjustment frame 47 are wrapped with soft cushions, which are soft in texture, and the front surfaces of the arm frame 46 and the adjustment frame 47 are marked with scales, and the scales can be observed. The length adjusted by the adjustment frame 47 can be seen intuitively, the upper surface of the arm frame 46 is slidably connected with a block 413, the lower surface of the block 413 is made of rubber material and fits the upper surface of the arm frame 46, the friction generated during sliding is large, and a certain force is required during movement, the upper surface of the adjustment frame 47 is fixedly connected with an arm baffle 412, the block 413 and the arm baffle 412 are used to limit the position of the patient's arm, the edges of the block 413, the arm frame 46, and the arm baffle 412 are all provided with rounded corners to prevent bumps, the rear surface of the adjustment frame 47 is provided with a limiting groove 402, and the limiting groove 402 is provided with multiple groups so that the rear surface of the adjustment frame 47 is laterally evenly distributed, the inner wall of the arm frame 46 is elastically connected with a slider 411 through a limiting spring 49, the rear surface of the slider 411 passes through and is fixedly connected with a pull rod 48, and the slider 411 and the pull rod 48 will move synchronously.

[0036] Reference Figure 1 , Figure 3 , Figure 4 The left surface of the support frame 41 is fixedly connected to the right surface of the base plate 1, and the base plate 1 provides support for the support frame 41. The pull rod 43 is inserted into the inner wall of the limit groove 401, and the adjustment rod 42 can be limited. The slider 45 is slidably connected to the inner wall of the support frame 41 and slides in the front-to-back direction. One end of the compression spring 44 is fixedly connected to the rear surface of the slider 45, and the other end of the compression spring 44 is fixedly connected to the inner wall of the rear side of the support frame 41. When the slider 45 moves backward, it will squeeze the compression spring 44 to generate a reaction force. The pull rod 43 penetrates and is slidably connected to the rear surface of the support frame 41 and slides in the front-to-back direction.

[0037] Reference Figure 1 , Figure 3 , Figure 4The arm frame 46 is set to be L-shaped, the slider 411 is slidably connected to the inner wall of the arm frame 46, and slides in the front and rear directions. One end of the limit spring 49 is fixedly connected to the rear surface of the slider 411, and the other end of the limit spring 49 is fixedly connected to the inner wall of the rear side of the arm frame 46. When the slider 411 slides backward, it will squeeze the limit spring 49 to generate a reaction force. The pull rod 48 passes through and is slidably connected to the rear surface of the arm frame 46. The pull rod 48 is inserted into the inner wall of the limit slot 402, which can limit the adjustment frame 47.

[0038] Working principle: When using the device, first place the device at the head of the bed, then the patient lies flat on the bed and places the head flat on the base plate 1, then rotate the handle 21 to drive the worm 22 to rotate, the rotating worm 22 will drive the worm wheel 23 and the rotating plate 24 to rotate, the rotating rotating plate 24 will drive the connecting rods 25 on both sides to rotate, the rotating connecting rods 25 will drive the connecting blocks 26, the splint 31, the sponge pad 32 and the neck brace 33 on both sides to move toward the center of the base plate 1, the moving sponge pad 32 and the neck brace 33 will first contact the patient's head, the sponge pad 32 can clamp and fix the patient's head, the neck brace 33 can prop up the patient's neck, and can keep the device stable when used. After fixation, release the handle 21, and the device will remain fixed due to the self-locking property of the handle 21, which can ensure the stability of the device.

[0039] Then, the height and width of the device are adjusted according to the patient's arm length. When adjusting the height, pull rod 43 is pulled backward to drive slider 45 to move backward. The slider 45 moving backward will squeeze the compression spring 44 to generate a reaction force. The pull rod 43 moving backward will disengage from the limiting groove 401 to release the limitation on the adjusting rod 42. Then, the height of the device is changed by moving the position of the adjusting rod 42. When it moves to a suitable height, release the pull rod 43. The reaction force of the compression spring 44 will push the slider 45 forward. The slider 45 moving forward will drive the pull rod 43 to move forward. The pull rod 43 moving forward will be plugged into another limiting groove 401 to limit the adjusting rod 42, thereby ensuring the stability of the height of the device.

[0040] Then adjust the width of the device. When adjusting, pull rod 2 48 backward to drive slider 2 411 to move backward. Pull rod 2 48 moving backward will disengage from limit slot 2 402 to release the limit on adjustment frame 47. Slider 2 411 moving backward will squeeze limit spring 49 to generate reaction force. After the limit is released, adjust the position of adjustment frame 47 laterally to change the total width of arm frame 46 and adjustment frame 47. When it moves to a suitable position, release pull rod 2 48. The reaction force of limit spring 49 will push slider 2 411 and pull rod 2 48. Move forward, the pull rod 2 48 moving forward will be plugged into another limiting groove 2 402 to limit the adjustment frame 47 to ensure the stability of the width of the device. Then the patient puts his arms on the arm frame 46 and the adjustment frame 47, and moves the block 413 so that the patient's arm is limited between the block 413 and the arm baffle 412. The arm frame 46 and the adjustment frame 47 can provide support for the patient's arm, and then start radiotherapy for the patient. After the radiotherapy is completed, reverse the worm gear 23 to open the fixing assembly to the left and right sides to release the fixation of the patient's head.

[0041] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A radiotherapy arm fixator, comprising a base plate (1), characterized in that: An adjusting component is arranged inside the base plate (1), a fixing component is arranged on the upper surface of the base plate (1), a supporting component is arranged on the right surface of the base plate (1), the adjusting component comprises a handle (21), a worm (22) is fixedly connected to the front surface of the handle (21), a worm wheel (23) is rotatably connected to the inner wall at the bottom end of the base plate (1), a rotating plate (24) is fixedly connected to the upper surface of the worm wheel (23), and a connecting rod (25) is hinged at the right end of the rotating plate (24).

2. The arm fixator for radiotherapy according to claim 1, characterized in that: The handle (21) penetrates through and is rotatably connected to the rear surface of the base plate (1), and the worm wheel (23) is meshed with the worm (22).

3. The arm fixator for radiotherapy according to claim 1, characterized in that: The adjustment assembly further comprises a connecting block (26), the connecting block (26) penetrates through and is slidably connected to the upper surface of the base plate (1), and the lower surface of the connecting block (26) is fixedly connected to the upper surface of the connecting rod (25).

4. The arm fixator for radiotherapy according to claim 1, characterized in that: The fixing assembly comprises a splint (31), a sponge pad (32) is fixedly connected to the left surface of the splint (31), and a neck support (33) is fixedly connected to the front surface of the splint (31).

5. The arm fixator for radiotherapy according to claim 4, characterized in that: The lower surface of the splint (31) is fixedly connected to the upper surface of the connecting block (26), and the splint (31), the sponge pad (32), the neck support (33), and the connecting block (26) are provided in two groups, and the two groups of the splint (31), the sponge pad (32), the neck support (33), and the connecting block (26) are symmetrically distributed on the left and right sides with respect to the center line of the bottom plate (1).

6. The arm fixator for radiotherapy according to claim 1, characterized in that: The support assembly comprises a support frame (41), an upper surface of the support frame (41) is penetrated by and slidably connected with an adjustment rod (42), a rear surface of the adjustment rod (42) is provided with a limiting groove (401), an inner wall of the support frame (41) is elastically connected with a slider (45) via a compression spring (44), a rear surface of the slider (45) is penetrated by and fixedly connected with a pull rod (43), a left surface of the adjustment rod (42) is fixedly connected with an arm frame (46), and the arm frame (4 6) is penetrated by and slidably connected to an adjustment frame (47), the upper surface of the arm frame (46) is slidably connected to a stopper (413), the upper surface of the adjustment frame (47) is fixedly connected to an arm baffle (412), the rear surface of the adjustment frame (47) is provided with a limiting groove 2 (402), the inner wall of the arm frame (46) is elastically connected to a slider 2 (411) through a limiting spring (49), and the rear surface of the slider 2 (411) is penetrated by and fixedly connected to a pull rod 2 (48).

7. The arm fixator for radiotherapy according to claim 6, characterized in that: The left surface of the support frame (41) is fixedly connected to the right surface of the base plate (1), the pull rod 1 (43) is inserted into the inner wall of the limiting groove 1 (401), the slider 1 (45) is slidably connected to the inner wall of the support frame (41), one end of the compression spring (44) is fixedly connected to the rear surface of the slider 1 (45), and the other end of the compression spring (44) is fixedly connected to the inner wall of the rear side of the support frame (41), and the pull rod 1 (43) passes through and is slidably connected to the rear surface of the support frame (41).

8. The arm fixator for radiotherapy according to claim 6, characterized in that: The arm frame (46) is configured to be L-shaped, the slider 2 (411) is slidably connected to the inner wall of the arm frame (46), one end of the limit spring (49) is fixedly connected to the rear surface of the slider 2 (411), and the other end of the limit spring (49) is fixedly connected to the inner wall of the rear side of the arm frame (46), the pull rod 2 (48) passes through and is slidably connected to the rear surface of the arm frame (46), and the pull rod 2 (48) is inserted into the inner wall of the limit slot 2 (402).

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