Damping device for linear accelerator treatment couch
By designing components such as the lifting base and carbon fiber shock-absorbing pads, the vibration problem during the retraction of the treatment bed was solved, achieving efficient shock absorption and reducing patient safety risks and discomfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2026-03-31
AI Technical Summary
The linear accelerator treatment bed vibrates during the retraction process, which may cause discomfort or even fractures to the patient, increasing safety risks.
It adopts a lifting base, carbon fiber shock-absorbing pads, fixed bed board, convex blocks and adjustment components, combined with dampers and springs, to absorb vibrations through sliding and rotating structures and improve the shock absorption effect.
It effectively absorbs vibrations from the treatment bed, reducing impact on patients, lowering the risk of fractures, and improving comfort and safety.
Smart Images
Figure CN224056476U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a linear accelerator treatment bed field especially relates to a shock absorber for linear accelerator treatment bed. BACKGROUND
[0002] Linear accelerator treatment bed is a kind of medical equipment in combination with linear accelerator, mainly for tumor treatment, by accurate control, the patient's focus is placed in radiation field, realizes efficient, accurate treatment, linear accelerator treatment bed plays an important role in tumor treatment, is one of indispensable equipment in modern radiotherapy department, provides effective treatment means for tumor patients.
[0003] In prior art, patient is accurately positioned to predetermined treatment position by moving treatment bed, after radiotherapy, treatment bed needs to retreat to initial position, vibration phenomenon appears in the process of retreat of treatment bed, is easy to cause external impact to the patient with relatively fragile skeleton, vibration not only can cause patient discomfort, under serious circumstances, can even lead to fracture, increases the security risk and discomfort of patient in treatment process, thus needs to improve a shock absorber for linear accelerator treatment bed to solve above-mentioned problem. UTILITY MODEL CONTENT
[0004] In order to overcome the problem that vibration phenomenon appears in the process of retreat of treatment bed, not only can cause patient discomfort, under serious circumstances, can even lead to fracture, increases the security risk and discomfort of patient in treatment process.
[0005] The utility model discloses a technical scheme for a shock absorber for linear accelerator treatment bed, comprising a lifting base, a bed body, a carbon fiber shock pad, a fixed bed plate, a second convex block and an adjusting assembly, the top of the lifting base is fixedly connected with the bed body, the top of the bed body is provided with the adjusting assembly, the top of the lifting base is provided with the fixed bed plate, the top of the fixed bed plate is fixedly connected with the carbon fiber shock pad, the bottom of the fixed bed plate is fixedly connected with the second convex block, and the fixed bed plate and the carbon fiber shock pad are moved by the second convex block.
[0006] The entire device can be raised and lowered via a lifting base. A first convex block is fixed inside the frame, and a second convex block is fixed to the bottom of the fixed bed board. When the fixed bed board vibrates, the second convex block is pressed down. The second convex block slides inside the first convex block, where it is damped by a second spring and a second damper. A first movable bracket rotating inside the semicircular block and a second movable bracket rotating outside the second convex block allow it to rotate outside the sliding blocks on both sides. The first damper and the first spring further dampen the vibrations received by the second convex block, improving the device's damping effect and enabling it to absorb vibrations caused by rapid movement or stopping of the treatment bed, reducing stress on the bed. The device effectively absorbs the impact of the body, improving shock absorption efficiency without altering the original function of the bed. It also ensures that the equipment's normal operation and accuracy are not affected during radiotherapy. The motor rotates, driving a gear through a rotating shaft. This gear meshes with a toothed plate, causing the extension bed board to slide outside the limiting block, extending the bed board and improving its practicality. Carbon fiber shock-absorbing pads mitigate minor vibrations as the extension bed board slides, ensuring the patient doesn't experience any abrupt shocks. Combined with the shock absorption mechanism, it quickly absorbs the vibrations from the second convex block and the sliding extension bed board, improving shock absorption efficiency and enhancing patient comfort.
[0007] Preferably, a frame is fixedly connected to the top of the bed, a first convex block is fixedly connected to the top of the frame, a semi-circular block is fixedly connected to the top of the first convex block, an O-frame is fixedly connected to the outside of the first convex block, a sliding block is slidably connected to the inside of the O-frame, a first damper and a first spring are fixedly connected between the sliding block and the O-frame, a first movable bracket is rotatably connected to the inside of the semi-circular block, the first movable bracket is rotatably connected to the outside of the sliding block, a second movable bracket is rotatably connected to the outside of the sliding block, the second movable bracket is rotatably connected to the outside of the second convex block, the second convex block is slidably connected to the inside of the first convex block, and a second spring and a second damper are fixedly connected between the second convex block and the first convex block.
[0008] Preferably, the first convex block has a groove at the corresponding position of the second convex block, and the second convex block slides in the groove.
[0009] Preferably, the O-frame has a groove at the corresponding position of the sliding block, and the sliding block slides in the groove.
[0010] Preferably, four first convex blocks are provided, and the four first convex blocks are symmetrically distributed inside the frame.
[0011] As preferred, the adjusting assembly comprises a limiting block fixedly connected to the outer side of the fixed bed plate, the extension bed plate is fixedly connected with a toothed plate at the bottom, the frame is fixedly connected with a motor at the inside, the output end of the motor is fixedly connected with a rotating shaft, the rotating shaft is fixedly connected with a gear at the outside, the gear is meshingly connected to the outside of the toothed plate, and the limiting block is slidingly connected to the inside of the extension bed plate.
[0012] As preferred, the extension bed plate is provided with a groove at the corresponding position of the limiting block, and the limiting block slides in the groove.
[0013] The beneficial effects of the utility model are as follows: compared with the vibration phenomenon in the process of the treatment bed returning, the first convex block is fixed in the inside of the frame, the second convex block is fixed at the bottom of the fixed bed plate, the second convex block is pressed down when the fixed bed plate vibrates, the second convex block slides in the inside of the first convex block, the vibration of the second convex block is buffered by the second spring and the second damper, the first movable support rotating in the inside of the semicircular block and the second movable support rotating at the outside of the second convex block are rotated at the outside of the two slide blocks, the vibration of the second convex block is buffered by the first damper and the first spring, the vibration caused by the fast movement or stop of the treatment bed is absorbed, the impact on the bed body is reduced, the fracture risk is reduced, the vibration phenomenon in the process of the treatment bed returning is avoided, the patient is not comfortable, and even fracture may be caused in serious cases, the safety hazard and discomfort in the treatment process of the patient are increased. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is a whole structure schematic view of the shock-absorbing device for the treatment bed of the linear accelerator;
[0015] Figure 2 It is a carbon fiber shock-absorbing pad structure schematic view of the shock-absorbing device for the treatment bed of the linear accelerator;
[0016] Figure 3 It is a first convex block structure schematic view of the shock-absorbing device for the treatment bed of the linear accelerator;
[0017] Figure 4 It is a second damper structure schematic view of the shock-absorbing device for the treatment bed of the linear accelerator;
[0018] Figure 5 It is an adjusting assembly structure schematic view of the shock-absorbing device for the treatment bed of the linear accelerator.
[0019] Explanation of reference signs: 1, lifting base; 21, frame; 22, first convex block; 23, semicircular block; 24, O-shaped frame; 25, sliding block; 26, first damper; 27, first spring; 28, first movable support; 29, second movable support; 210, second convex block; 211, fixed bed plate; 212, carbon fiber shock pad; 213, second spring; 214, second damper; 31, limiting block; 32, extension bed plate; 33, toothed plate; 34, motor; 35, rotating shaft; 36, gear; 4, bed body. DETAILED DESCRIPTION
[0020] The utility model is further explained below in combination with the drawings and examples.
[0021] Please refer to Figures 1-5 The utility model provides a kind of shock absorber for linear accelerator treatment bed, including lifting base 1, bed body 4, still including carbon fiber shock pad 212, fixed bed plate 211, second convex block 210 and adjusting assembly, the top of lifting base 1 is fixedly connected with bed body 4, the top of bed body 4 is provided with adjusting assembly, the top of lifting base 1 is provided with fixed bed plate 211, the top of fixed bed plate 211 is fixedly connected with carbon fiber shock pad 212, the bottom of fixed bed plate 211 is fixedly connected with second convex block 210, and fixed bed plate 211 and carbon fiber shock pad 212 are moved by second convex block 210.
[0022] Please refer to Figures 2-4In the embodiment, the top of the bed body 4 is fixedly connected with the frame 21, the top of the frame 21 is fixedly connected with the first convex block 22, the top of the first convex block 22 is fixedly connected with the semicircle block 23, the outer side of the first convex block 22 is fixedly connected with the O-shaped frame 24, the inside of the O-shaped frame 24 is slidably connected with the sliding block 25, the first damper 26 and the first spring 27 are fixedly connected between the sliding block 25 and the O-shaped frame 24, the inner side of the semicircle block 23 is rotatably connected with the first movable support 28, the first movable support 28 is rotatably connected to the outside of the sliding block 25, the outside of the sliding block 25 is rotatably connected with the second movable support 29, the second movable support 29 is rotatably connected to the outside of the second convex block 210, the second convex block 210 is slidably connected to the inside of the first convex block 22, the second spring 213 and the second damper 214 are fixedly connected between the second convex block 210 and the first convex block 22, the second convex block 210 is fixed to the bottom of the fixed bed plate 211 through the first convex block 22 fixed to the inside of the frame 21, when the fixed bed plate 211 vibrates, the second convex block 210 is pressed downward, the second convex block 210 slides in the inside of the first convex block 22, and the vibration of the second convex block 210 is cushioned through the second spring 213 and the second damper 214, and the first movable support 28 rotatably connected to the inner side of the semicircle block 23 and the second movable support 29 rotatably connected to the outside of the second convex block 210 are used to rotate on the outside of the two sliding blocks 25, the vibration received by the second convex block 210 is cushioned through the first damper 26 and the first spring 27, the damping effect of the device is improved, the vibration caused by the rapid movement or stop of the treatment bed can be absorbed, the impact on the bed body 4 is reduced, the first convex block 22 is provided with a groove at the corresponding position of the second convex block 210, the second convex block 210 slides in the groove, the damping effect of the second spring 213 and the second damper 214 on the second convex block 210 is improved through the sliding of the second convex block 210 in the groove, and the vibration is diluted to the two sliding blocks 25, the O-shaped frame 24 is provided with a groove at the corresponding position of the sliding block 25, the sliding block 25 slides in the groove, the sliding block 25 is cushioned through the sliding of the sliding block 25 in the groove, thereby improving the damping efficiency of the second convex block 210 and improving the practicality of the device, four first convex blocks 22 are arranged symmetrically in the inside of the frame 21, the four corners of the second convex block 210 can be cushioned through the four first convex blocks 22, the damping efficiency is improved, and the practicality is improved.
[0023] Please refer to Figure 1 , Figure 5In the embodiment, the adjusting assembly comprises a limiting block 31 fixedly connected to the outer side of the fixed bed plate 211, the bottom of the extension bed plate 32 is fixedly connected with a toothed plate 33, the inside of the frame 21 is fixedly connected with a motor 34, the output end of the motor 34 is fixedly connected with a rotating shaft 35, the outside of the rotating shaft 35 is fixedly connected with a gear 36 engaged with the outside of the toothed plate 33, the limiting block 31 is slidingly connected to the inside of the extension bed plate 32, the motor 34 is started to drive the gear 36 to rotate by rotating the rotating shaft 35, the extension bed plate 32 is driven to slide outside the limiting block 31 by engaging with the toothed plate 33, the extension bed plate 32 is extended to improve the practicability of the device, the shock absorption is matched to quickly absorb the vibration of the second convex block 210 and the extension bed plate 32 when sliding, the shock absorption efficiency is improved, the patient comfort is improved, and the extension bed plate 32 is provided with a groove at the corresponding position of the limiting block 31, the limiting block 31 slides in the groove, the extension bed plate 32 is limited by the groove, and the stability is improved.
[0024] When working, the whole device can be lifted by the lifting base 1, the first convex block 22 is fixed in the inside of the frame 21, the second convex block 210 is fixed to the bottom of the fixed bed plate 211, the second convex block 210 is pressed down when the fixed bed plate 211 vibrates, the second convex block 210 slides in the inside of the first convex block 22 and is shock-absorbed by the second spring 213 and the second damper 214, and the first movable support 28 rotating in the inside of the semicircular block 23 and the second movable support 29 rotating outside the second convex block 210 are matched to rotate outside the two side sliding blocks 25, the vibration received by the second convex block 210 is shock-absorbed by the first damper 26 and the first spring 27, the shock absorption effect of the device is improved, the vibration caused by the rapid movement or stop of the treatment bed can be absorbed, the impact on the bed body 4 is reduced, the shock absorption efficiency is improved, the original function of the bed body 4 is not changed, the normal operation and precision of the equipment are not affected during radiotherapy, the motor 34 is started to drive the gear 36 to rotate by rotating the rotating shaft 35, the extension bed plate 32 is driven to slide outside the limiting block 31 by engaging with the toothed plate 33, the extension bed plate 32 is extended to improve the practicability of the device, the carbon fiber shock pad 212 can relieve some slight vibration when the extension bed plate 32 slides, the patient will not feel any abrupt vibration, the shock absorption is matched to quickly absorb the vibration of the second convex block 210 and the extension bed plate 32 when sliding, the shock absorption efficiency is improved, and the patient comfort is improved.
[0025] Through the above steps, the second convex block 210 slides in the inside of the first convex block 22, and the second spring 213 and the second damper 214 thereof are buffered, and the first movable support 28 rotating in the inside of the semicircular block 23 and the second movable support 29 rotating outside the second convex block 210 make it rotate outside the two side sliding blocks 25, and the first damper 26 and the first spring 27 buffer the vibration received by the second convex block 210, thereby improving the damping effect of the device, so as to solve the problem that the treatment bed may vibrate during the returning process, which not only causes discomfort to the patient, but also may even cause fracture in serious cases, thereby increasing the safety hazard and discomfort of the patient during the treatment process.
Claims
1. A damping device for a linear accelerator treatment bed, comprising a lifting base (1), a bed body (4), characterized in that: Also include carbon fiber shock pad (212), fixed bed plate (211), second convex block (210) and adjusting assembly, the top of the lifting base (1) is fixedly connected with the bed body (4), the top of the bed body (4) is provided with adjusting assembly, the top of the lifting base (1) is provided with fixed bed plate (211), the top of the fixed bed plate (211) is fixedly connected with carbon fiber shock pad (212), the bottom of the fixed bed plate (211) is fixedly connected with the second convex block (210), the fixed bed plate (211) and carbon fiber shock pad (212) are driven to move through the second convex block (210), the top of the bed body (4) is fixedly connected with the frame (21), the top of the frame (21) is fixedly connected with the first convex block (22), the top of the first convex block (22) is fixedly connected with the semicircle block (23), the outer side of the first convex block (22) is fixedly connected with the O-shaped frame (24), the inside of the O-shaped frame (24) is slidably connected with the sliding block (25), the first damper (26) and the first spring (27) are fixedly connected between the sliding block (25) and the O-shaped frame (24), the inner side of the semicircle block (23) is rotatably connected with the first movable support (28), the first movable support (28) is rotatably connected to the outside of the sliding block (25), the outside of the sliding block (25) is rotatably connected with the second movable support (29), the second movable support (29) is rotatably connected to the outside of the second convex block (210), the second convex block (210) is slidably connected to the inside of the first convex block (22), and the second spring (213) and the second damper (214) are fixedly connected between the second convex block (210) and the first convex block (22).
2. A shock absorbing device for a linac treatment couch as claimed in claim 1, wherein: The first convex block (22) is provided with a groove at the corresponding position of the second convex block (210), and the second convex block (210) slides in the groove.
3. The shock absorbing device for a linac treatment couch as claimed in claim 1, wherein: The O-shaped frame (24) is provided with a groove at the corresponding position of the sliding block (25), and the sliding block (25) slides in the groove.
4. The shock absorbing device for a linac treatment couch of claim 1, wherein: The first convex block (22) is provided with four, and the four first convex blocks (22) are symmetrically distributed in the inside of the frame (21).
5. The shock absorbing device for a linac treatment couch of claim 1, wherein: The adjusting assembly comprises a limiting block (31) fixedly connected to the outer side of the fixed bed plate (211), the bottom of the extension bed plate (32) is fixedly connected with a toothed plate (33), the inside of the frame (21) is fixedly connected with a motor (34), the output end of the motor (34) is fixedly connected with a rotating shaft (35), the outside of the rotating shaft (35) is fixedly connected with a gear (36), the gear (36) is meshingly connected to the outside of the toothed plate (33), and the limiting block (31) is slidably connected in the inside of the extension bed plate (32).
6. A shock absorbing device for a linac treatment couch as claimed in claim 5, wherein: The extension bed plate (32) is provided with a groove at the corresponding position of the limiting block (31), and the limiting block (31) slides in the groove.