Radiotherapy patient upper limb restraint device

Abstract

The application provides a radiotherapy patient upper limb restraint device, which comprises a mounting frame, a mounting shell slidingly arranged on the mounting frame, two groups of support rods hingedly arranged on the mounting shell, an arm support hingedly arranged at one end of the support rod, a movable plate slidingly arranged in the mounting shell, a driving assembly arranged on the mounting shell and used for driving the movable plate to slide, a first locking mechanism arranged at one end of the movable plate and connected with the mounting shell and the mounting frame, so as to lock or unlock the position of the mounting shell when the movable plate slides, and a second locking mechanism arranged at the other end of the movable plate, so as to lock or unlock the position of the two groups of support rods when the movable plate slides. The device can quickly fix the arm of the patient in a comfortable posture, avoids the patient's arm from shielding the radiotherapy area during radiotherapy, and improves the comfort of the patient.

Description

Technical Field

[0001] This invention specifically relates to an upper limb restraint device for radiotherapy patients. Background Technology

[0002] Radiotherapy is a method of killing tumors using the ionizing radiation of radiation. It utilizes radiation therapy devices to generate electron beams, proton beams, or other particle beams to irradiate the lesion, achieving a killing effect on tumor cells. It is estimated that 60% to 70% of cancer patients have received radiotherapy. With the continuous advancement of medical technology, radiotherapy is now often used in combination with surgery, chemotherapy, immunotherapy, and other methods to improve the cure rate of cancer.

[0003] To ensure accurate localization of the tumor during radiotherapy and to fully expose the chest radiotherapy area, specialized equipment is needed to restrain and fix the patient's arm to prevent obstruction of the radiotherapy area.

[0004] For example, Chinese patent number 201920692544.7 provides an arm fixation bracket for radiotherapy CT scans. When using this bracket, the movable rod can be adjusted to a suitable height according to actual needs. The connecting plate can be rotated and fixed, and the positioning post at the lower end of the support plate is inserted along the positioning hole. Through the positioning hole and the positioning post, the support plate is stably installed on the horizontal plate, and the support plate provides a stable place for the patient's arm.

[0005] However, existing devices used to restrain the upper limbs in radiotherapy require multi-directional adjustment and fixation of the components used to fix the arm. This makes it inconvenient to quickly position the patient's arm in a comfortable position before fixing it, and the adjustment of the arm's fixation position is cumbersome, thus reducing its practicality. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention proposes an upper limb restraint device for radiotherapy patients. This addresses the technical problems mentioned in the background section regarding the inconvenience and cumbersome process of quickly and easily aligning the patient's arm in a comfortable position before fixing it, as well as the complicated adjustment of the arm's fixation position.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an upper limb restraint device for radiotherapy patients, comprising:

[0008] Mounting bracket, on which a mounting shell is slidably disposed;

[0009] The support rod is provided in two sets, one end of which is hinged to the mounting shell, and the other end is provided with a hinged arm support;

[0010] A movable plate is slidably disposed within the mounting housing, and the mounting housing is provided with a drive assembly for driving the movable plate to slide.

[0011] A first locking mechanism is disposed at one end of the movable plate and connected to the mounting housing and the mounting bracket to lock or unlock the position of the mounting housing when the movable plate slides; and

[0012] A second locking mechanism is provided at the other end of the movable plate to lock or unlock the positions of the two sets of support rods when the movable plate slides.

[0013] In a preferred embodiment, the mounting bracket can be snapped onto the side of the radiotherapy bed, and the bottom of the mounting bracket is also provided with mounting components for mounting it onto the radiotherapy bed.

[0014] In a preferred embodiment, the mounting components include:

[0015] A fixed plate, which is height-adjustable, is installed within the mounting frame. Ball bearings are provided on both the fixed plate and the opposite side of the mounting frame.

[0016] A threaded knob is screwed to the mounting bracket, and its end is rotatably connected to the fixing plate.

[0017] In a preferred embodiment, the driving component includes:

[0018] A mounting cover is disposed on the mounting housing; and

[0019] An adjustment knob is rotatably mounted on the mounting housing along its axis. One end of the adjustment knob located inside the mounting housing is provided with a drive column. A guide groove is provided on the movable plate, and a positioning groove is provided at one end of the guide groove. The drive column is slidably engaged in the guide groove.

[0020] In a preferred embodiment, a limiting block is provided at the end of the support rod, and four sets of stops are provided on the mounting cover, with each set of limiting blocks disposed between two sets of stops.

[0021] In a preferred embodiment, the mounting bracket is provided with a slide rail, and the bottom of the mounting housing is provided with a snap-fit ​​seat. The snap-fit ​​seat is slidably snapped onto the slide rail along the extension direction of the slide rail. The mounting bracket is also provided with a protective pad, and the snap-fit ​​seat is disposed inside the protective pad.

[0022] In a preferred embodiment, the first locking mechanism includes:

[0023] A fixing pin is vertically mounted inside the mounting housing, with one end penetrating the mounting housing and extending outwards. The end of the fixing pin is tapered. Multiple sets of through slots are spaced apart on the mounting bracket along the extension direction of the slide rail. The end of the fixing pin can be engaged in the slots and extend outwards.

[0024] A locking block is provided on the fixing pin;

[0025] A first elastic element is disposed between the locking block and the mounting shell; and

[0026] A lifting assembly is disposed at one end of the movable plate and connected to the fixing pin to drive the fixing pin to rise and fall when the movable plate slides.

[0027] In a preferred embodiment, the lifting assembly includes a drive rod disposed at one end of the movable plate, and the fixing pin has an inclined groove, the fixing pin being slidably engaged in the inclined groove.

[0028] In a preferred embodiment, the second locking mechanism includes:

[0029] A gear is disposed at the hinge point between the support rod and the mounting housing; and

[0030] A chuck is located at the other end of the movable plate and can be engaged with the gear.

[0031] In a preferred embodiment, the bottom of the arm support is provided with a mounting post, which is vertically and rotatably inserted through one end of the support rod. A second elastic element is provided between the arm support and the support rod. The mounting post is provided with multiple sets of circumferentially arranged fixing teeth, and one end of the support rod is provided with multiple sets of circumferentially arranged fixing grooves, into which the fixing teeth can be engaged.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. When using this device, the mounting frame is placed on the radiotherapy bed. The patient can place their upper arm and forearm in the two sets of arm supports for fixation. By moving their arm, the patient can achieve a comfortable posture. During the arm movement, the support rod rotates along its hinge point with the mounting shell, simultaneously causing the mounting shell to slide on the mounting frame. After the arm posture is adjusted, the movable plate can be controlled to slide via the drive assembly. During the sliding process, the movable plate locks the position of the mounting shell on the mounting frame through the first locking mechanism, and simultaneously locks the positions of the two sets of support rods through the second locking mechanism. This quickly fixes the patient's arm in a comfortable posture, preventing the patient's arm from obstructing the radiotherapy area during radiotherapy and improving patient comfort.

[0034] 2. During the arm placement process, the mounting frame can slide along the radiotherapy bed. The ball bearings reduce the force required for the mounting frame to move. After the arm is placed, the drive column is rotated by turning the adjustment knob. During the rotation, the drive column, in cooperation with the guide groove, drives the movable plate to slide. During the sliding process, the movable plate, through the cooperation of its drive rod at one end with the inclined groove, drives the fixing pin to move downward and insert into the slot, fixing the position of the mounting shell on the mounting frame. One end of the fixing pin passes through the slot and abuts against the radiotherapy bed, thereby fixing the position of the mounting frame on the radiotherapy bed. This allows for the synchronous fixing of the mounting shell and the mounting frame, effectively improving the efficiency of fixing the patient's arm, making the device suitable for patients of different body sizes. Attached Figure Description

[0035] To more clearly illustrate the specific embodiments of the present invention, the accompanying drawings used in the specific embodiments will be briefly described below. In all the drawings, the elements or parts are not necessarily drawn to scale.

[0036] Figure 1 This invention provides a three-dimensional structural schematic diagram of an upper limb restraint device for radiotherapy patients.

[0037] Figure 2 This is a schematic diagram of the mounting frame in an upper limb restraint device for radiotherapy patients according to the present invention;

[0038] Figure 3 This is a schematic diagram of the installation structure of the arm support in the upper limb restraint device for radiotherapy patients according to the present invention;

[0039] Figure 4 This is a schematic diagram of the connection structure between the arm support and the support rod in an upper limb restraint device for radiotherapy patients according to the present invention;

[0040] Figure 5 This is a schematic diagram of the internal structure of the mounting shell in an upper limb restraint device for radiotherapy patients according to the present invention;

[0041] Figure 6 for Figure 5 A schematic diagram of the disassembled structure;

[0042] Figure 7 This is a schematic diagram of the movable plate in the upper limb restraint device for radiotherapy patients according to the present invention.

[0043] Figure label:

[0044] 101. Mounting bracket; 102. Protective pad; 103. Fixing plate; 104. Threaded knob; 105. Slide rail; 106. Slot; 107. Ball bearing;

[0045] 201. Snap-fit ​​socket; 202. Mounting housing; 203. Mounting cover; 204. Stop block; 205. Fixing pin; 206. Snap-fit ​​block; 207. Inclined groove; 208. First elastic element;

[0046] 301. Movable plate; 302. Guide groove; 303. Positioning groove; 304. Drive rod; 305. Claw;

[0047] 401. Adjustment knob; 402. Drive column;

[0048] 501. Support rod; 502. Limiting block; 503. Gear; 504. Fixing groove;

[0049] 601. Mounting column; 602. Fixing tooth; 603. Second elastic element; 604. Arm support. Detailed Implementation

[0050] The embodiments of the technical solution of the present invention will now be described in detail with reference to the accompanying drawings. These embodiments are merely illustrative of the technical solution of the present invention and are therefore intended to limit the scope of protection of the present invention.

[0051] Example:

[0052] like Figure 1 , 2 As shown, the present invention provides an upper limb restraint device for radiotherapy patients, including a mounting frame 101, which can be snapped onto the side of a radiotherapy bed. The bottom of the mounting frame 101 is also provided with a mounting assembly for mounting it onto the radiotherapy bed. The mounting assembly includes a liftable fixing plate 103 disposed within the mounting frame 101. Ball bearings 107 are provided on both the fixing plate 103 and the opposite side of the mounting frame 101. A threaded knob 104 is screwed onto the mounting frame 101, and the end of the threaded knob 104 is rotatably connected to the fixing plate 103.

[0053] In use, the mounting bracket 101 can be snapped onto the side of the radiotherapy bed, and the fixing plate 103 can be raised and lowered within the mounting bracket 101 by rotating the threaded knob 104. This adjusts the distance between the fixing plate 103 and the inner upper surface of the mounting bracket 101, facilitating the placement of the mounting bracket 101 on radiotherapy beds of different thicknesses and preventing the mounting bracket 101 from wobbling on the radiotherapy bed. Furthermore, after installation, the mounting bracket 101 can slide on the radiotherapy bed via the ball bearings 107 to adjust its position and reduce resistance when sliding the mounting bracket 101.

[0054] like Figure 2 , 3As shown, in this embodiment, a mounting shell 202 is slidably disposed on the mounting bracket 101, a slide rail 105 is disposed on the mounting bracket 101, a snap-fit ​​seat 201 is disposed at the bottom of the mounting shell 202, the snap-fit ​​seat 201 is slidably snapped onto the slide rail 105 along the extension direction of the slide rail 105, a protective pad 102 is also disposed on the mounting bracket 101, and the snap-fit ​​seat 201 is disposed inside the protective pad 102.

[0055] The mounting housing 202 can slide along the slide rail 105. The movement of the mounting housing 202 is guided by the cooperation between the slide rail 105 and the snap-fit ​​seat 201. A protective pad 102 is provided to isolate the patient's skin, thereby improving the comfort of using the device.

[0056] like Figure 3 , 4 As shown, in this embodiment, the mounting shell 202 is provided with two sets of hinged support rods 501. The end of the support rod 501 is provided with a hinged arm support 604. The bottom of the arm support 604 is provided with a mounting post 601. The mounting post 601 is vertically and rotatably inserted through one end of the support rod 501. A second elastic member 603 is provided between the arm support 604 and the support rod 501. The mounting post 601 is provided with multiple sets of circumferentially arranged fixing teeth 602. One end of the support rod 501 is provided with multiple sets of circumferentially arranged fixing grooves 504. The fixing teeth 602 can be inserted into the fixing grooves 504.

[0057] During use, the patient can place their upper arm and forearm within the two sets of arm supports 604 respectively. In some embodiments, the patient's arm can also be secured with straps to prevent it from slipping off the arm supports 604, thus improving the stability of the arm fixation. After the arm is positioned, the patient can move it to achieve a comfortable position, preventing discomfort during radiotherapy from interfering with the treatment. Furthermore, during arm movement, the mounting frame 101 slides on the radiotherapy bed, the mounting shell 202 slides along the slide rail 105, and the support rod 501 rotates at its hinge point with the mounting shell 202, causing the arm supports 604 to rotate along the mounting column 601. Through multi-directional and multi-angle adjustments to the arm supports 604, their position can be adapted to the angle of the arm, improving patient comfort during radiotherapy.

[0058] Once the patient's arm is in place, gravity causes the mounting post 601 to slide downwards along its axis, allowing the fixing teeth 602 to engage in the fixing groove 504, thus fixing the position of the arm support 604 and preventing the arm support 604 from moving when fixing the positions of the mounting bracket 101, mounting shell 202, and support rod 501.

[0059] like Figure 5 , 6As shown in Figure 7, in this embodiment, a slidable movable plate 301 is provided inside the mounting shell 202. A driving assembly for driving the movable plate 301 to slide is provided on the mounting shell 202. The driving assembly includes a mounting cover 203 on the mounting shell 202. A rotatable adjustment knob 401 is provided on the mounting shell 202. A driving column 402 is provided at one end of the adjustment knob 401 located inside the mounting shell 202. A guide groove 302 is provided on the movable plate 301. A positioning groove 303 is provided at one end of the guide groove 302. The driving column 402 is slidably engaged in the guide groove 302.

[0060] The drive column 402 can be moved by rotating the adjustment knob 401. The movable plate 301 can be controlled to slide in the mounting shell 202 by the cooperation of the eccentrically set drive column 402 and the guide groove 302. When the drive column 402 is locked in the positioning groove 303 at one end of the guide groove 302, the position of the movable plate 301 can be locked to prevent the movable plate 301 from moving in the opposite direction. When the movable plate 301 needs to be reset, the adjustment knob 401 can be rotated in the opposite direction to make the drive column 402 disengage from the positioning groove 303.

[0061] like Figure 3 , 4 As shown, in this embodiment, a limiting block 502 is provided at the end of the support rod 501, and four sets of stops 204 are provided on the mounting cover 203, with each set of limiting blocks 502 positioned between two sets of stops 204. The stops 204 limit the movement range of the limiting blocks 502, thereby limiting the rotation range of the support rod 501 and preventing excessive rotation of the support rod 501, making the device more convenient to use.

[0062] like Figure 5 , 6 As shown in Figure 7, in this embodiment, one end of the movable plate 301 is provided with a first locking mechanism connected to the mounting shell 202 and the mounting bracket 101, so as to lock or unlock the position of the mounting shell 202 when the movable plate 301 slides. The first locking mechanism includes a lifting and lowering fixed pin 205 disposed in the mounting shell 202. One end of the fixed pin 205 passes through the mounting shell 202 and extends outward. The end of the fixed pin 205 is tapered. Multiple sets of through slots 106 are provided on the mounting bracket 101 along the extension direction of the slide rail 105. The end of the fixed pin 205 can be locked in the slot 106 and extend outward. A locking block 206 is provided on the fixed pin 205. A first elastic member 208 is provided between the locking block 206 and the mounting shell 202. One end of the movable plate 301 is provided with a lifting assembly connected to the fixed pin 205. The lifting assembly drives the fixed pin 205 to rise and fall when the movable plate 301 slides. The lifting assembly includes a drive rod 304 disposed at one end of the movable plate 301, and a groove 207 is provided on the fixing pin 205, which is slidably engaged in the groove 207.

[0063] During the sliding of the movable plate 301, the movable plate 301 drives the drive rod 304 to move laterally. The drive rod 304, in conjunction with the inclined groove 207, causes the fixing pin 205 to rise and fall. When the fixing pin 205 descends, it engages with the slot 106 to fix the position of the mounting shell 202 on the mounting frame 101. Simultaneously, when the fixing pin 205 descends to its extreme position, one end extending from the slot 106 abuts against the radiotherapy bed, thereby fixing the position of the mounting frame 101 on the radiotherapy bed. This allows for quick fixation of the positions of the mounting frame 101 and the mounting shell 202. Similarly, rotating the adjustment knob 401 in the opposite direction causes the drive column 402 to disengage from the guide groove 302, releasing the fixation of the movable plate 301. Under the action of the first elastic element 208, the fixing pin 205 resets and disengages from the radiotherapy bed and the slot 106, quickly releasing the fixation of the positions of the mounting frame 101 and the mounting shell 202.

[0064] like Figures 4 to 7 As shown, in this embodiment, a second locking mechanism is provided at the other end of the movable plate 301. The second locking mechanism is used to lock or unlock the positions of the two sets of support rods 501 when the movable plate 301 slides. The second locking mechanism includes a gear 503 provided at the hinge point between the support rod 501 and the mounting shell 202, and a pawl 305 is provided at the other end of the movable plate 301, which can be engaged with the gear 503.

[0065] During the sliding process, the movable plate 301 drives the pawl 305 to slide, so that the pawl 305 locks onto the gear 503 to fix the position of the gear 503, thereby fixing the position of the two sets of support rods 501. This prevents the movement of the patient's arm from causing the two sets of support rods 501 to move, thus fixing the patient's arm at multiple angles and positions. This allows the patient's arm to be quickly fixed in a comfortable position, and fixing and unfixing the patient's arm is very quick, improving the practicality of the device.

[0066] Specific usage and beneficial effects of the present invention:

[0067] When in use, the mounting frame 101 is secured to the radiotherapy bed. The patient can place their upper arm and forearm in the two sets of arm supports 604 for fixation. By moving their arm, the patient can achieve a comfortable posture. During the movement, the support rod 501 rotates along its hinge point with the mounting shell 202, simultaneously causing the mounting shell 202 to slide on the mounting frame 101. After the arm posture is adjusted, the movable plate 301 can be slid by rotating the adjustment knob 401, in cooperation with the drive column 402 and the guide groove 302. During the sliding process, the movable plate 301 locks the position of the mounting shell 202 on the mounting frame 101 through the cooperation of the fixing pin 205 and the slot 106. At the same time, the positions of the two sets of support rods 501 are locked through the cooperation of the pawl 305 and the gear 503. This quickly fixes the patient's arm in a more comfortable posture, preventing the patient's arm from obstructing the radiotherapy area during radiotherapy and improving the patient's comfort.

[0068] Furthermore, during the placement of the arm, the mounting frame 101 can slide along the radiotherapy bed. The ball bearings 107 reduce the force required for the mounting frame 101 to move. After the arm is placed, the drive column 402 is rotated by turning the adjustment knob 401. During the rotation, the drive column 402 drives the movable plate 301 to slide through the cooperation of the guide groove 302. During the sliding process, the movable plate 301 drives the fixing pin 205 to move downward and insert into the slot 106 through the cooperation of the drive rod 304 at one end and the inclined groove 207, thus fixing the position of the mounting shell 202 on the mounting frame 101. One end of the fixing pin 205 passes through the slot 106 and abuts against the radiotherapy bed, thereby fixing the position of the mounting frame 101 on the radiotherapy bed. This allows for the synchronous fixing of the mounting shell 202 and the mounting frame 101, effectively improving the efficiency of fixing the patient's arm and making the device suitable for patients of different body sizes.

[0069] The foregoing has shown and described the basic principles and main features of the present invention and its advantages. It will be apparent to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments.

Claims

1. A restraint device for the upper limbs of a radiotherapy patient, characterized in that, Including: Mounting bracket (101), on which mounting shell (202) is slidably disposed; The support rod (501) is provided in two sets, one end of which is hinged to the mounting shell (202), and the other end is provided with a hinged arm support (604). The movable plate (301) is slidably disposed within the mounting housing (202), and the mounting housing (202) is provided with a driving component for driving the movable plate (301) to slide. A first locking mechanism is provided at one end of the movable plate (301) and connected to the mounting shell (202) and the mounting bracket (101) to lock or unlock the position of the mounting shell (202) when the movable plate (301) slides. and The second locking mechanism is provided at the other end of the movable plate (301) to lock or unlock the positions of the two sets of support rods (501) when the movable plate (301) slides. The mounting bracket (101) is provided with a slide rail (105), and the bottom of the mounting shell (202) is provided with a snap-fit ​​seat (201). The snap-fit ​​seat (201) is slidably snapped onto the slide rail (105) along the extension direction of the slide rail (105). The mounting bracket (101) is also provided with a protective pad (102), and the snap-fit ​​seat (201) is disposed inside the protective pad (102). The first locking mechanism includes: A fixing pin (205) is vertically mounted inside the mounting housing (202), with one end penetrating the mounting housing (202) and extending outward. The end of the fixing pin (205) is tapered. Multiple sets of through slots (106) are spaced apart on the mounting bracket (101) along the extension direction of the slide rail (105). The end of the fixing pin (205) can be engaged in the slot (106) and extend outward. A locking block (206) is disposed on the fixing pin (205); A first elastic element (208) is disposed between the locking block (206) and the mounting shell (202); and A lifting assembly is disposed at one end of the movable plate (301) and connected to the fixing pin (205) to drive the fixing pin (205) to rise and fall when the movable plate (301) slides; The lifting assembly includes a drive rod (304) disposed at one end of the movable plate (301), and a groove (207) is provided on the fixing pin (205), and the fixing pin (205) is slidably engaged in the groove (207); The driving component includes: Mounting cover (203) is disposed on the mounting housing (202); and An adjustment knob (401) is rotatably mounted on the mounting housing (202) along its axis. One end of the adjustment knob (401) located inside the mounting housing (202) is provided with a drive column (402). A guide groove (302) is provided on the movable plate (301). A positioning groove (303) is provided at one end of the guide groove (302). The drive column (402) is slidably engaged in the guide groove (302). The second locking mechanism includes: A gear (503) is disposed at the hinge point between the support rod (501) and the mounting housing (202); and A chuck (305) is provided at the other end of the movable plate (301) and can be engaged with the gear (503).

2. The upper limb restraint device for radiotherapy patients according to claim 1, characterized in that: The mounting bracket (101) can be snapped onto the side of the radiotherapy bed, and the bottom of the mounting bracket (101) is also provided with mounting components for mounting it on the radiotherapy bed.

3. The upper limb restraint device for radiotherapy patients according to claim 2, characterized in that: The installation components include: A fixing plate (103) is vertically and flexibly disposed within the mounting frame (101), and ball bearings (107) are provided on opposite sides of both the fixing plate (103) and the mounting frame (101); and A threaded knob (104) is screwed to the mounting bracket (101), and its end is rotatably connected to the fixing plate (103).

4. The upper limb restraint device for radiotherapy patients according to claim 1, characterized in that: The end of the support rod (501) is provided with a limiting block (502), and the mounting cover (203) is provided with four sets of stops (204), with each set of limiting blocks (502) being located between two sets of stops (204).

5. The upper limb restraint device for a radiotherapy patient according to claim 1, characterized in that: The arm support (604) has a mounting post (601) at its bottom. The mounting post (601) is vertically and rotatably inserted through one end of the support rod (501). A second elastic element (603) is provided between the arm support (604) and the support rod (501). The mounting post (601) has multiple sets of circumferentially arranged fixing teeth (602). One end of the support rod (501) has multiple sets of circumferentially arranged fixing grooves (504). The fixing teeth (602) can be inserted into the fixing grooves (504).

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