Double-cross-arm six-degree-of-freedom medical treatment bed

Abstract

The utility model discloses a double-cross-arm six-degree-of-freedom medical treatment bed, and belongs to the technical field of clinical medical instruments. A double-cross-arm six-degree-of-freedom medical treatment bed comprises a bottom plate, a lifting plate is arranged above the bottom plate, a height adjusting mechanism is arranged between the bottom plate and the lifting plate, a transverse plate is transversely and slidably connected to the upper portion of the lifting plate, a transverse adjusting mechanism is arranged between the lifting plate and the transverse plate, and a lateral rotating plate is rotationally connected to the upper portion of the transverse plate. A lateral rotating adjusting mechanism is arranged between the lateral rotating plate and the transverse plate, an inclined plate is arranged above the lateral rotating plate, an inclined adjusting mechanism is arranged between the lateral rotating plate and the inclined plate, a longitudinal plate is longitudinally and slidably connected to the upper portion of the inclined plate, a longitudinal adjusting mechanism is arranged between the inclined plate and the longitudinal plate, and a supporting plate is rotatably connected to the upper portion of the longitudinal plate; a rotation adjusting mechanism is arranged between the longitudinal plate and the supporting plate. The multi-degree-of-freedom adjustment of the supporting plate can be realized, and the requirement of deviation correction in the radiotherapy process is met.

Description

Technical Field

[0001] This utility model relates to the field of clinical medical device technology, and more specifically, to a double-crossarm six-degree-of-freedom medical treatment bed. Background Art

[0002] Radiotherapy is one of the main treatment methods for malignant tumors. With the use of many precise radiotherapy techniques in recent years, especially the widespread application of IMRT, SRS, and SBRT, the accuracy of irradiation positioning has become crucial for treatment. Errors in irradiation positioning can arise from various factors, such as changes in the patient's body, operator positioning errors, and elastic deformation of the treatment bed surface under load. Therefore, how to quickly correct deviations, especially angular deviations of the treatment bed surface, through mechanical devices to achieve more precise positioning is a problem we are considering.

[0003] A search revealed a patent document with publication number CN115607857A that provides a radiotherapy bed. This device uses two dead points of a brake cam to lock the state of the brake cam, thereby locking the position of the brake pads. When braking is not required, the brake cam is located at the first dead point; when braking is required, the brake cam rotates until the second dead point, at which point the brake pads lock with the lifting platform, and the brake cam is immediately locked by the second dead point and will not continue to rotate, thus providing a sensitive braking effect.

[0004] While the aforementioned device can solve the vibration problem generated during the braking process of the radiotherapy bed, it can only adjust the degrees of freedom in the vertical and horizontal directions, which cannot meet the needs of deviation correction during radiotherapy. Therefore, we propose a double-crossarm six-degree-of-freedom medical treatment bed. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this invention is to provide a double-crossarm six-degree-of-freedom medical treatment bed to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] This utility model is achieved through the following technical solution:

[0009] A double-crossarm six-degree-of-freedom medical treatment bed includes a base plate, a lifting plate above the base plate, a height adjustment mechanism between the base plate and the lifting plate, a horizontal plate slidably connected above the lifting plate, a horizontal adjustment mechanism between the lifting plate and the horizontal plate, a lateral rotation plate rotatably connected above the horizontal plate, a lateral rotation adjustment mechanism between the lateral rotation plate and the horizontal plate, an inclined plate above the lateral rotation plate, an inclined adjustment mechanism between the lateral rotation plate and the inclined plate, a longitudinal plate slidably connected above the inclined plate, a longitudinal adjustment mechanism between the inclined plate and the longitudinal plate, and a support plate rotatably connected above the longitudinal plate, a rotation adjustment mechanism between the longitudinal plate and the support plate.

[0010] As an optional solution to the technical solution of this application, the height adjustment mechanism includes a cross arm and a telescopic motor. The bottom fixed end of the cross arm is rotatably connected to the base plate, the bottom moving end of the cross arm is slidably connected to the base plate, the top fixed end of the cross arm is rotatably connected to the lifting plate, the top moving end of the cross arm is slidably connected to the lifting plate, the telescopic motor is fixedly installed on the base plate, and the telescopic end of the telescopic motor is connected and fixedly connected to the lifting plate.

[0011] As an optional solution to the technical solution of this application, the lateral adjustment mechanism includes a first drive motor, a first gear, and a first rack. The first drive motor is fixedly mounted on the lifting plate, the first gear is connected to the output end of the first drive motor, the first gear is meshed with the first rack, and the first rack is fixedly connected to the horizontal plate.

[0012] As an optional solution to the technical solution of this application, the lateral rotating plate is rotatably connected to the horizontal plate via an arc-shaped slide rail. The rotation adjustment mechanism includes a second drive motor, a second gear, and a second arc-shaped rack. The second drive motor is fixedly mounted on the horizontal plate, the second arc-shaped rack is connected and fixed to the lateral rotating plate, the second drive motor is driven by the second gear, and the second gear is meshed with the second arc-shaped rack.

[0013] As an optional solution to the technical solution of this application, the tilt adjustment mechanism includes an electric telescopic bar and a slider. The electric telescopic bar is connected and fixed to a lateral rotating plate. The telescopic end of the electric telescopic bar is rotatably connected to the slider, and the slider is slidably connected to the tilt plate.

[0014] As an optional solution to the technical solution of this application, the longitudinal adjustment mechanism includes a third drive motor, a conveyor belt, and pulleys. The conveyor belt is mounted on the inclined plate via the pulleys, the third drive motor is fixedly mounted on the inclined plate, the output end of the third drive motor is connected to the conveyor belt for transmission, and the conveyor belt is fixedly connected to the longitudinal plate.

[0015] As an optional solution to the technical solution of this application, the support plate is rotatably connected to the longitudinal plate via an arc-shaped slide rail. The rotation adjustment mechanism includes a fourth drive motor, a fourth drive gear, and a fourth arc-shaped rack. The fourth drive motor is fixedly mounted on the longitudinal plate, the fourth arc-shaped rack is fixedly connected to the support plate, the output end of the fourth drive motor is fixedly connected to the fourth drive gear, and the fourth drive gear is meshed with the fourth arc-shaped rack.

[0016] As an optional solution to the technical solution of this application, a displacement sensor is also included, which is used to detect the displacement of the lifting plate, the horizontal plate, the lateral rotating plate, the inclined plate, the longitudinal plate and / or the support plate.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. This application, by setting up a height adjustment mechanism, a lateral adjustment mechanism, a rotation adjustment mechanism, a tilt adjustment mechanism, a longitudinal adjustment mechanism, and a rotation adjustment mechanism, can achieve multi-degree-of-freedom adjustment of the support plate, thereby meeting the needs of deviation correction during radiotherapy.

[0020] 2. By setting a displacement sensor, this application can accurately control the displacement of the support plate, thereby increasing the accuracy of the support plate position adjustment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of a double-crossarm, six-degree-of-freedom medical treatment bed;

[0022] Figure 2 This is a schematic diagram of the height adjustment mechanism for a double-crossarm, six-degree-of-freedom medical treatment bed;

[0023] Figure 3 This is a schematic diagram of the tilt adjustment mechanism of a double-crossarm six-degree-of-freedom medical treatment bed;

[0024] Figure 4 This is a schematic diagram of the rotation adjustment mechanism of a double-crossarm six-degree-of-freedom medical treatment bed;

[0025] Figure 5 This is a schematic diagram of the rotation adjustment mechanism of a double-crossarm six-degree-of-freedom medical treatment bed;

[0026] In the diagram: 1. Base plate; 2. Lifting plate; 3. Height adjustment mechanism; 301. Cross arm; 302. Telescopic motor; 4. Horizontal plate; 5. Lateral adjustment mechanism; 501. First drive motor; 502. First gear; 503. First rack; 6. Lateral rotating plate; 7. Rotation adjustment mechanism; 701. Second drive motor; 702. Second gear; 703. Second arc-shaped rack; 8. Inclined plate; 9. Inclined adjustment mechanism; 901. Electric telescopic bar; 902. Slider; 10. Vertical plate; 11. Longitudinal adjustment mechanism; 1101. Third drive motor; 1102. Conveyor belt; 1103. Pulley; 12. Support plate; 13. Rotation adjustment mechanism; 1301. Fourth drive motor; 1302. Fourth drive gear; 1303. Fourth arc-shaped rack; 14. Displacement sensor. DETAILED DESCRIPTION

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0028] Please see Figure 1 This utility model provides a double-crossarm six-degree-of-freedom medical treatment bed, including a base plate 1, a lifting plate 2 above the base plate 1, a height adjustment mechanism 3 between the base plate 1 and the lifting plate 2, a horizontal plate 4 slidably connected above the lifting plate 2, a horizontal adjustment mechanism 5 between the lifting plate 2 and the horizontal plate 4, a lateral rotation plate 6 rotatably connected above the horizontal plate 4, a lateral rotation adjustment mechanism 7 between the lateral rotation plate 6 and the horizontal plate 4, an inclined plate 8 above the lateral rotation plate 6, an inclined adjustment mechanism 9 between the lateral rotation plate 6 and the inclined plate 8, a longitudinal plate 10 slidably connected above the inclined plate 8, a longitudinal adjustment mechanism 11 between the inclined plate 8 and the longitudinal plate 10, a support plate 12 rotatably connected above the longitudinal plate 10, and a rotation adjustment mechanism 13 between the longitudinal plate 10 and the support plate 12.

[0029] In this implementation, the user can adjust the vertical position of the support plate 12 using the height adjustment mechanism 3, adjust the horizontal position of the support plate 12 using the horizontal adjustment mechanism 5, adjust the horizontal tilt angle of the support plate 12 using the lateral rotation adjustment mechanism 7, adjust the vertical tilt angle of the support plate 12 using the tilt adjustment mechanism 9, adjust the vertical position of the support plate 12 using the vertical adjustment mechanism 11, and adjust the orientation of the support plate 12 in the plane using the rotation adjustment mechanism 13, thereby meeting the needs of deviation correction during radiotherapy.

[0030] like Figure 2As shown, the height adjustment mechanism 3 includes a cross arm 301 and a telescopic motor 302. The fixed bottom end of the cross arm 301 is rotatably connected to the base plate 1, the movable bottom end of the cross arm 301 is slidably connected to the base plate 1, the fixed top end of the cross arm 301 is rotatably connected to the lifting plate 2, and the movable top end of the cross arm 301 is slidably connected to the lifting plate 2. The telescopic motor 302 is fixedly mounted on the base plate 1, and the telescopic end of the telescopic motor 302 is connected and fixed to the lifting plate 2. There are two cross arms 301, located on both sides of the telescopic motor 302. When the telescopic motor 302 drives the lifting plate 2 to move in the vertical direction, the cross arms 301 can maintain the stability of the lifting plate 2.

[0031] The lateral adjustment mechanism 5 includes a first drive motor 501, a first gear 502, and a first rack 503. The first drive motor 501 is fixedly mounted on the lifting plate 2. The first gear 502 is connected to the output end of the first drive motor 501. The first gear 502 is meshed with the first rack 503, and the first rack 503 is fixedly connected to the horizontal plate 4. The first drive motor 501 can be connected to the first gear 502 through a reduction mechanism, and the first gear 502 and the first rack 503 drive the horizontal plate 4 to move laterally.

[0032] like Figure 3 and Figure 4 As shown, the lateral rotating plate 6 is rotatably connected to the horizontal plate 4 via an arc-shaped slide rail. The rotation adjustment mechanism 7 includes a second drive motor 701, a second gear 702, and a second arc-shaped rack 703. The second drive motor 701 is fixedly mounted on the horizontal plate 4, and the second arc-shaped rack 703 is connected and fixed to the lateral rotating plate 6. The second drive motor 701 is driven by the second gear 702, and the second gear 702 is meshed with the second arc-shaped rack 703. The second drive motor 701 can be driven by the second gear 702 through a reduction mechanism, and the second gear 702 and the second arc-shaped rack 703 drive the rotating plate 6 to rotate laterally.

[0033] The tilt adjustment mechanism 9 includes an electric telescopic bar 901 and a slider 902. The electric telescopic bar 901 is fixedly connected to the lateral rotating plate 6. The telescopic end of the electric telescopic bar 901 is rotatably connected to the slider 902, and the slider 902 is slidably connected to the tilt plate 8. By extending and retracting the electric telescopic bar 901 and changing the support height on one side of the tilt plate 8 using the slider 902, the tilt plate 8 can be rotated longitudinally.

[0034] The longitudinal adjustment mechanism 11 includes a third drive motor 1101, a conveyor belt 1102, and pulleys 1103. The conveyor belt 1102 is mounted on the inclined plate 8 via the pulleys 1103. The third drive motor 1101 is fixedly mounted on the inclined plate 8, and its output end is connected to the conveyor belt 1102. The conveyor belt 1102 is connected and fixed to the longitudinal plate 10. The longitudinal adjustment mechanism 11 may also include a tensioning mechanism to maintain the tension of the conveyor belt 1102. By driving the conveyor belt 1102 with the third drive motor 1101, the longitudinal position of the longitudinal plate 10 can be changed.

[0035] like Figure 5 As shown, the support plate 12 is rotatably connected to the longitudinal plate 10 via an arc-shaped slide rail. The rotation adjustment mechanism 13 includes a fourth drive motor 1301, a fourth drive gear 1302, and a fourth arc-shaped rack 1303. The fourth drive motor 1301 is fixedly mounted on the longitudinal plate 10. The fourth arc-shaped rack is connected and fixedly connected to the support plate 12. The output end of the fourth drive motor 1301 is connected and fixedly connected to the fourth drive gear 1302. The fourth drive gear 1302 and the fourth arc-shaped rack 1303 are meshed together. The fourth drive motor 1301 can be transmitted to the fourth drive gear 1302 through a reduction mechanism. The fourth drive gear 1302 and the fourth arc-shaped rack 1303 drive the support plate 12 to rotate on the plane, changing the plane orientation of the support plate 12.

[0036] Furthermore, this device also includes a displacement sensor 14, which detects the displacement of the lifting plate 2, the horizontal plate 4, the lateral rotating plate 6, the tilting plate 8, the vertical plate 10, and / or the support plate 12. The displacement sensor 14 can be an angle sensor or a linear displacement sensor, and can also be integrated into the drive motor, using the drive motor's built-in secondary feedback function for positional accuracy feedback detection. Through the adjustment of six degrees of freedom, the radiotherapy equipment can precisely adjust the patient's position during treatment, and, in conjunction with image-guided equipment, accurately move the target point to the treatment center point, greatly improving the treatment accuracy and patient cure rate.

Claims

1. A double-crossarm six-degree-of-freedom medical treatment bed, characterized in that: The system includes a base plate (1), a lifting plate (2) above the base plate (1), a height adjustment mechanism (3) between the base plate (1) and the lifting plate (2), a horizontal plate (4) slidably connected above the lifting plate (2), a horizontal adjustment mechanism (5) between the lifting plate (2) and the horizontal plate (4), a lateral rotating plate (6) rotatably connected above the horizontal plate (4), a lateral rotation adjustment mechanism (7) between the lateral rotating plate (6) and the horizontal plate (4), an inclined plate (8) above the lateral rotating plate (6), an inclined adjustment mechanism (9) between the lateral rotating plate (6) and the inclined plate (8), a longitudinal plate (10) slidably connected above the inclined plate (8), a longitudinal adjustment mechanism (11) between the inclined plate (8) and the longitudinal plate (10), a support plate (12) rotatably connected above the longitudinal plate (10), and a rotation adjustment mechanism (13) between the longitudinal plate (10) and the support plate (12).

2. The double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The height adjustment mechanism (3) includes a cross arm (301) and a telescopic motor (302). The bottom fixed end of the cross arm (301) is rotatably connected to the base plate (1), the bottom moving end of the cross arm (301) is slidably connected to the base plate (1), the top fixed end of the cross arm (301) is rotatably connected to the lifting plate (2), the top moving end of the cross arm (301) is slidably connected to the lifting plate (2), the telescopic motor (302) is fixedly installed on the base plate (1), and the telescopic end of the telescopic motor (302) is connected and fixed to the lifting plate (2).

3. The double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The lateral adjustment mechanism (5) includes a first drive motor (501), a first gear (502), and a first rack (503). The first drive motor (501) is fixedly mounted on the lifting plate (2). The first gear (502) is connected to the output end of the first drive motor (501). The first gear (502) is meshed with the first rack (503). The first rack (503) is connected and fixed to the horizontal plate (4).

4. The double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The lateral rotating plate (6) is rotatably connected to the horizontal plate (4) via an arc-shaped slide rail. The rotation adjustment mechanism (7) includes a second drive motor (701), a second gear (702), and a second arc-shaped rack (703). The second drive motor (701) is fixedly installed on the horizontal plate (4). The second arc-shaped rack (703) is connected and fixed to the lateral rotating plate (6). The second drive motor (701) is connected to the second gear (702) for transmission. The second gear (702) is meshed with the second arc-shaped rack (703).

5. A double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The tilt adjustment mechanism (9) includes an electric telescopic bar (901) and a slider (902). The electric telescopic bar (901) is fixedly connected to the lateral rotating plate (6). The telescopic end of the electric telescopic bar (901) is rotatably connected to the slider (902). The slider (902) is slidably connected to the tilt plate (8).

6. The double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The longitudinal adjustment mechanism (11) includes a third drive motor (1101), a conveyor belt (1102), and a pulley (1103). The conveyor belt (1102) is mounted on the inclined plate (8) via the pulley (1103). The third drive motor (1101) is fixedly mounted on the inclined plate (8). The output end of the third drive motor (1101) is connected to the conveyor belt (1102) for transmission. The conveyor belt (1102) is connected and fixed to the longitudinal plate (10).

7. A double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: The support plate (12) is rotatably connected to the longitudinal plate (10) via an arc-shaped slide rail. The rotation adjustment mechanism (13) includes a fourth drive motor (1301), a fourth drive gear (1302), and a fourth arc-shaped rack (1303). The fourth drive motor (1301) is fixedly installed on the longitudinal plate (10). The fourth arc-shaped rack is connected and fixedly connected to the support plate (12). The output end of the fourth drive motor (1301) is connected and fixedly connected to the fourth drive gear (1302). The fourth drive gear (1302) meshes with the fourth arc-shaped rack (1303).

8. A double-crossarm six-degree-of-freedom medical treatment bed according to claim 1, characterized in that: It also includes a displacement sensor (14) for detecting the displacement of the lifting plate (2), the horizontal plate (4), the lateral rotating plate (6), the inclined plate (8), the vertical plate (10) and / or the support plate (12).

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