A treatment couch base and treatment couch for a barrel type radiotherapy

Abstract

This utility model discloses a treatment bed base and treatment bed for drum radiotherapy. The utility model utilizes a cover plate lifting device and a cover plate matching design to avoid interference between the treatment head and the base when the frame is rotated to its lowest point. This reduces the installation height of the drum in space, enabling a more compact overall size and layout. It also reduces the distance from the center point to the ground, decreasing the vertical movement distance and time of the treatment bed, thus improving treatment efficiency. Furthermore, this utility model improves the turntable rotation structure by using an automatically locking worm gear transmission scheme, saving on the braking system, simplifying the transmission structure, and improving transmission rigidity.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy technology, and more specifically, to a treatment bed base and treatment bed for roller radiotherapy. Background Technology

[0002] In existing roller-type radiotherapy equipment, the treatment head rotates with the roller. To avoid interference with the base when the treatment head reaches its lowest point, the roller installation position must maintain a sufficient distance from the ground. However, a high installation position of the roller results in a larger overall gantry size and an elevated isocenter. An excessively high isocenter leads to a longer movement distance and time between the treatment bed and the treatment position, thus affecting the radiotherapy efficiency.

[0003] Meanwhile, during the radiotherapy preparation phase, the radiotherapy physicist or doctor needs to walk around the bed to adjust the patient's position and set equipment parameters. The treatment bed base, as a pre-embedded component, is buried underground. Existing bases are usually solid or hollow. Solid bases raise the isocenter point, resulting in a larger roller size. Although using existing hollow bases lowers the isocenter point of the equipment, it increases the risk of the radiotherapy physicist or doctor tripping and causing a safety accident.

[0004] In addition to the issues mentioned above, gear drives have inherent transmission backlash, which can cause errors in the orbital angle of the treatment bed. Furthermore, gear drives require an external brake mechanism, which is complex in both mechanical structure and electrical control system. Moreover, the brake mechanism is typically a friction-type clutch brake, which can lead to issues with braking distance and clutch noise. Utility Model Content

[0005] This invention overcomes the shortcomings of existing technologies where interference easily occurs between the treatment bed and the treatment head, and provides a treatment bed base for roller radiotherapy, which is expected to solve the above-mentioned problems.

[0006] To solve the above-mentioned technical problems, this utility model discloses a treatment bed base for roller radiotherapy.

[0007] A treatment bed base for roller radiotherapy includes a revolving base, a cover plate lifting device, and a cover plate;

[0008] The orbital base is hollow inside, forming a receiving cavity. The cover lifting device is located inside the orbital base, and the cover is located above the cover lifting device. The cover lifting device has a folded state and an unfolded state. When the cover lifting device is in the folded state, the receiving cavity is configured to accommodate at least part of the treatment head. When the cover lifting device is in the unfolded state, the cover covers the receiving cavity.

[0009] The cover lifting device can drive the cover to rise and fall. When the treatment head reaches the lowest point, the lifting device controls the cover to fall, avoiding interference between the cover and the base.

[0010] A further technical solution is that the cover plate lifting mechanism includes an electric telescopic rod.

[0011] A further technical solution is that the cover plate lifting device includes a reduction motor, a connecting push rod, a cam follower, and a telescopic hinge;

[0012] The cover lifting device includes a geared motor and a telescopic hinge;

[0013] The geared motor is connected to the telescopic hinge.

[0014] A further technical solution is that the telescopic hinge is a scissor-type linkage;

[0015] The scissor linkage includes a first link and a second link;

[0016] The connecting push rod is connected to one end of the bottom of the first connecting rod.

[0017] A further technical solution is that the treatment bed base also includes a drive base plate, a rotation drive device, and a turntable;

[0018] The drive base plate is disposed above the orbital base, and the rotation drive device is mounted on the drive base plate;

[0019] The rotary drive device is connected to the turntable, and the rotary drive device can drive the turntable to rotate.

[0020] A further technical solution is that the rotary drive device includes a worm, a worm wheel, a slewing bearing, and a servo motor;

[0021] The worm gear is connected to the servo motor, and the worm wheel cooperates with the worm gear;

[0022] The turntable is connected to the worm gear, and a rotary support bearing is provided between the outer wall of the turntable and the inner wall of the revolution base. The worm gear is arranged around the rotary support bearing.

[0023] The servo motor's movement drives the worm gear to rotate, which in turn drives the worm wheel to rotate, thus achieving precise control of the turntable's rotation.

[0024] The worm gear drive structure has good rigidity and is self-locking, ensuring the accuracy of the treatment bed's rotation. Furthermore, the slewing bearing structure avoids the need for long cantilever beams.

[0025] A further technical solution is that the treatment bed base also includes an absolute encoder;

[0026] The absolute encoder is connected to the worm gear.

[0027] The absolute encoder can measure the rotation angle of the worm gear.

[0028] In another aspect, this utility model also provides a treatment bed;

[0029] A treatment bed, comprising the treatment bed base and bed board of the roller radiotherapy device as described above;

[0030] The bed board is mounted on the orbital base.

[0031] Compared with existing technologies, this invention has at least the following beneficial effects: This invention uses a cover plate lifting device and a cover plate matching design to avoid interference between the treatment head and the base when the treatment head rotates to its lowest point, thus reducing the installation height of the roller in space and enabling a more compact overall size and layout. It also reduces the distance from the center point to the ground, decreasing the vertical movement distance and time of the treatment bed, thereby improving treatment efficiency. Furthermore, this invention improves the turntable rotation structure by using an automatically locking worm gear transmission scheme, saving on the braking system, simplifying the transmission structure, and improving transmission rigidity. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the overall structure of the treatment bed base;

[0033] Figure 2 This is a cross-sectional view of the treatment bed base when it is raised.

[0034] Figure 3 This is a cross-sectional view of the treatment bed base as it descends;

[0035] Figure 4 This is a schematic diagram showing the relative positions of the turntable, treatment head, and treatment bed base.

[0036] In the diagram, 1-revolutionary base, 2-cover lifting device, 21-gear motor, 22-connecting push rod, 23-cam follower, 24-telescopic hinge, 3-cover plate, 4-drive base plate, 5-rotation drive device, 51-worm gear, 52-worm wheel, 53-rotation support bearing, 54-servo motor, 55-encoder, 6-turntable, 7-treatment head. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0038] Example 1

[0039] A treatment bed base for roller radiotherapy, see [link to relevant documentation] Figures 1-3 It includes a revolution base 1, a cover plate lifting device 2, a cover plate 3, a drive base plate 4, a rotation drive device 5, and a turntable 6;

[0040] The orbital base 1 has a hollow interior forming a receiving cavity. The cover plate lifting device 2 is disposed inside the orbital base 1 and can move up and down within the orbital base 1. The receiving cavity is configured to accommodate at least a portion of the treatment head. By accommodating a portion of the treatment head within the receiving cavity, the isocenter point of the entire device can be effectively lowered, thereby reducing the drum size, improving radiotherapy efficiency, and simultaneously reducing the space requirements of the radiotherapy equipment for the treatment room.

[0041] The cover lifting device has a folded state and an unfolded state. When the cover lifting device is in the folded state, a part of the radiotherapy head can be accommodated in the accommodating cavity. When the cover lifting device is in the unfolded state, the cover covers the accommodating cavity.

[0042] Specifically, the shape of the cover plate is adapted to the size of the cavity opening. During the radiotherapy preparation stage, the cover plate lifting device is in the unfolded state, and the cover plate can cover the hollow part inside the base, thereby preventing the radiotherapy physicist or doctor from stepping into the air and avoiding safety accidents.

[0043] It should be noted that the cover plate lifting device can use multiple electric telescopic rods, hydraulic telescopic rods and other devices with telescopic functions. For example, four electric telescopic rods are installed in the hollow bottom of the orbital base 1 and the four telescopic electric rods are set at the four corners of the cover plate 3.

[0044] In this embodiment, the cover plate lifting device 2 includes a reduction motor 21, a connecting push rod 22, a cam follower 23, and a telescopic hinge 24.

[0045] The output shaft of the geared motor 21 is connected to the connecting push rod 22, and one side of the connecting push rod 22 is connected to the cam follower 23, which is embedded in the cam guide groove.

[0046] The connecting push rod 22 is hinged to one end of the telescopic hinge 24.

[0047] The telescopic hinge 24 is a scissor-type linkage;

[0048] The scissor linkage includes a first link and a second link;

[0049] The connecting push rod 22 is connected to one end of the bottom of the first connecting rod.

[0050] The cover plate 3 is positioned above the cover plate 3 lifting device 2, and the diameter of the cover plate 3 is smaller than the diameter of the hollow part of the orbital base 1.

[0051] The drive base plate 4 is disposed above the orbital base 1, and the rotation drive device 5 is mounted on the drive base plate 4;

[0052] The rotary drive device 5 is connected to the turntable 6, and the rotary drive device 5 can drive the turntable 6 to rotate.

[0053] It should be noted that the rotary drive device 5 can be driven and transmitted in various ways such as belt drive and chain drive. In this embodiment, the rotary drive device 5 includes a worm 51, a worm wheel 52, a rotary support bearing 53, and a servo motor 54.

[0054] The worm gear 51 is connected to the servo motor 54, and the worm wheel 52 cooperates with the worm gear 51;

[0055] The turntable 6 is connected to the worm gear 52. A rotary support bearing 53 is provided between the outer wall of the turntable 6 and the inner wall of the orbital base 1. The worm gear 52 is arranged around the rotary support bearing 53.

[0056] In a preferred embodiment, the rotary drive device 5 further includes an encoder 55, which is connected to the worm gear 51.

[0057] Example 2

[0058] A treatment bed, comprising a treatment bed base and a movable bed for a roller-type radiotherapy device as described above;

[0059] The movable bed is mounted on the orbital base.

[0060] During operation, when the roller needs to rotate, the software control program will drive the lifting device 2 of the base cover 3 to descend, and the cover 3 will descend into the interior of the orbital base 1 to avoid interference with the treatment head.

[0061] Specifically in this embodiment, the geared motor 21 drives the connecting push rod 22 to move, and the connecting push rod 22 drives the telescopic hinge 24 to shorten through the cam follower 23, thereby lowering the cover plate 3.

[0062] When rotation is required, the servo motor 54 drives the worm gear 51 to rotate, which in turn drives the worm wheel 52 to rotate, thus rotating the turntable 6. The diameter of the cover plate 3 is smaller than the inner diameter of the worm gear, and there is a gap between the cover plate 3 and the worm gear. This achieves precise control of the rotation of the turntable 6.

[0063] An encoder 55 is provided at the other end of the worm 51 to measure the rotation angle of the worm 51.

[0064] Although the present invention has been described herein with reference to illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and improvements can be made to the components and / or layout of the subject matter combination within the scope of the present application. Besides variations and improvements to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A treatment bed base for roller radiotherapy, characterized in that, Includes: orbital base, cover lifting device, and cover; The orbital base is hollow inside, forming a receiving cavity. The cover lifting device is located inside the orbital base, and the cover is located above the cover lifting device. The cover lifting device has a folded state and an unfolded state. When the cover lifting device is in the folded state, the receiving cavity is configured to accommodate at least part of the treatment head. When the cover lifting device is in the unfolded state, the cover covers the receiving cavity.

2. The treatment bed base for roller radiotherapy as described in claim 1, characterized in that, The cover lifting device includes an electric telescopic rod.

3. The treatment bed base for roller radiotherapy as described in claim 1, characterized in that, The cover plate lifting device includes a geared motor, a telescopic hinge, and a connecting push rod; The geared motor is connected to the telescopic hinge.

4. The treatment bed base for roller radiotherapy as described in claim 3, characterized in that, The telescopic hinge is a scissor-type linkage; The scissor linkage includes a first link and a second link; The connecting push rod is connected to one end of the bottom of the first connecting rod.

5. A treatment bed base for roller radiotherapy as described in claim 1, characterized in that, It also includes a rotary drive and a turntable for connecting the treatment bed; The rotation drive device is mounted on the orbital base; The rotary drive device is connected to the turntable, and the rotary drive device can drive the turntable to rotate.

6. A treatment bed base for roller radiotherapy as described in claim 5, characterized in that, The rotary drive device includes a worm gear, a worm wheel, a rotary support bearing, and a servo motor; The worm gear is connected to the servo motor, and the worm wheel cooperates with the worm gear; The turntable is connected to the worm gear, and a rotary support bearing is provided between the outer wall of the turntable and the inner wall of the revolution base. The worm gear is arranged around the rotary support bearing.

7. A treatment bed base for roller radiotherapy as described in claim 6, characterized in that, It also includes encoders; The encoder is connected to the worm gear.

8. A treatment bed, characterized in that, Includes the treatment bed base and bed board for roller radiotherapy as described in any one of claims 1-7; The bed board is mounted on the orbital base.

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