CN115282506A - Device for realizing position calibration of medical linear accelerator - Google Patents

Abstract

The invention discloses a device for realizing position calibration of a medical linear accelerator, which relates to the technical field of position calibration devices and comprises a position calibration device main body, wherein a limiting bottom plate is arranged at the bottom of the position calibration device main body, a power sliding assembly is arranged between the limiting bottom plate and the position calibration device main body, and a bottom supporting sleeve is arranged on the outer side of the limiting bottom plate. According to the invention, through the matching of the limiting slide rod, the support frame, the hydraulic lifting device, the limiting connecting rod, the sliding assembly, the rotating shaft and the sliding wheel, when the height is required to be adjusted, the support frame is pushed by the hydraulic lifting device to drive the limiting slide rod to move upwards, so that the limiting bottom plate and the position calibration device body move upwards together, the friction force with the inner wall of the bottom supporting sleeve is reduced under the action of the rotating shaft and the sliding wheel, and finally the upward moving range of the limiting bottom plate is limited under the action of the limiting connecting rod, so that the height is prevented from being adjusted inconveniently.

Description

A device for realizing the position calibration of a medical linear accelerator

technical field

The invention relates to the technical field of position calibration devices, in particular to a device for realizing the position calibration of a medical linear accelerator.

Background technique

A medical linear accelerator is a radiation therapy device that uses radiation to kill tumor tissue. A medical linear accelerator may include rack systems, radiation source systems, patient support systems, image guidance systems and other components. In actual use, the position of each component of the medical linear accelerator needs to be calibrated before the actual use of the medical linear accelerator every day. In the prior art, it is usually necessary to calibrate the positions of the components of the medical linear accelerator.

There are following problems at prior art:

1. During the use of the existing device for realizing the position calibration of the medical linear accelerator, the sliding process is prone to position deviation, resulting in a large error in the calibration;

2. During the use of the existing device for realizing the position calibration of the medical linear accelerator, the height is inconvenient to adjust, which leads to the problem of low efficiency of the device.

Contents of the invention

The present invention provides a device for realizing the position calibration of a medical linear accelerator to solve the problems raised in the above-mentioned background technology.

In order to solve the problems of the technologies described above, the technical solution adopted in the present invention is:

A device for realizing the position calibration of a medical linear accelerator, comprising a main body of the position calibration device, the bottom of the main body of the position calibration device is provided with a limit base plate, and a power sliding assembly is arranged between the limit base plate and the main body of the position calibration device. A bottom support sleeve is provided on the outside of the limit base plate, a sliding limit mechanism is provided between the main body of the position calibration device and the limit base plate, and a height adjustment mechanism is provided between the limit limit base plate and the bottom support sleeve. The sliding limit mechanism includes a limit ball block, the upper surface of the limit ball block is fixedly connected with the lower surface of the main body of the position calibration device, and the bottom of the main body of the position calibration device is provided with a limit chute, auxiliary movable components, connecting blocks, elastic stabilization components and gas springs, the height adjustment mechanism includes a limit slide bar, the upper surface of the limit slide bar is fixedly connected with the lower surface of the limit base plate, and the bottom of the limit base plate is provided with a support frame, Hydraulic lifting device, limit linkage and slide assembly.

The further improvement of the technical solution of the present invention lies in that: the limiting chute is opened inside the limiting bottom plate, the outer surface of the limiting ball block is movably connected with the inner wall of the limiting chute, and the auxiliary movable component is arranged on the limiting chute. Between the outer surface of the ball block and the inner wall of the limiting chute, the outer surface of the connecting block is movably connected with the inner wall of the limiting chute, and the elastic stabilization component is arranged on the outer surface of the connecting block, the limiting chute Between the inner walls of the gas spring, the two ends of the gas spring are respectively movably connected with the outer surface of the connection block and the inner wall of the limit chute, and through the cooperation of the above structures, the position deviation during the sliding process is avoided.

The further improvement of the technical solution of the present invention is that: the auxiliary movable assembly includes a sliding contact ball, the outer surface of the sliding contact ball is movably connected with the outer surface of the limit ball block, and the outer surface of the sliding contact ball A sliding ball is movably connected to the upper surface, and a sliding abutting plate is movably connected to the outer surface of the sliding abutting ball and the sliding ball, and the outer surface of the sliding abutting plate is fixedly connected to the outer surface of the connecting block. Through the above structure The fit, reduce the contact area, reduce friction.

The further improvement of the technical solution of the present invention is that: the elastic stabilization component includes an elastic sleeve, the outer surface of the elastic sleeve is respectively fixedly connected with the lower surface of the connection block and the inner wall of the limit chute, and the elastic sleeve Elastic sliding pieces are movably connected to the inner wall of the device, and the stability of the device is ensured through the cooperation of the above structures.

The further improvement of the technical solution of the present invention lies in that: an elastic ball is fixedly connected to the outer surface of the elastic sliding piece, and a connecting rod is fixedly connected to the outer surface of the elastic ball, and one end of the connecting rod is connected to the inner wall of the elastic sleeve plate. The movable connection ensures the stability of the device through the cooperation of the above structures.

The further improvement of the technical solution of the present invention lies in: the outer surface of the support frame is fixedly connected with the outer surface of the limit slide bar, one end of the hydraulic lifting device is fixedly connected with the outer surface of the support frame, and the other end of the hydraulic lifting device One end is fixedly connected with the inner wall of the bottom support sleeve through the cooperation of the above structures.

The further improvement of the technical solution of the present invention lies in that: one end of the limit link is movably connected with the outer surface of the support frame, the other end of the limit link is movably connected with the inner wall of the bottom support sleeve, and the sliding assembly is set Between the outer surface of the limit slide bar and the inner wall of the bottom support sleeve, the height adjustment is completed through the cooperation of the above structures.

The further improvement of the technical solution of the present invention is that: the sliding assembly includes a rotating shaft, both ends of the rotating shaft are fixedly connected to the inner wall of the limit slide bar, and sliding wheels are movably connected to the outer surface of the rotating shaft. The outer surface of the sliding wheel is movably connected with the inner wall of the bottom support sleeve, and the friction force with the inner wall of the bottom support sleeve is reduced through the cooperation of the above structures.

Owing to adopting above-mentioned technical scheme, relative to the prior art, the technical progress of the present invention is:

1. The present invention provides a device for realizing the position calibration of a medical linear accelerator, which adopts the cooperation between the limit ball block, the limit chute, the auxiliary movable component, the connecting block, the elastic stability component and the gas spring, and first makes the limit ball block It is flexibly connected with the inner wall of the limit chute, and cooperates with the function of the auxiliary movable component to reduce the force bearing area between the limit ball and the limit ball, thereby reducing the friction force, and then squeeze the elastic stability component and the gas spring through the connection block Elastic deformation occurs, combined with the frictional resistance between the various structures, so that the main body of the position calibration device can maintain a relatively stable support function when the main body of the position calibration device shakes, avoiding position deviation during the sliding process, resulting in large errors in calibration.

2. The present invention provides a device for realizing the position calibration of a medical linear accelerator, which adopts the cooperation between a sliding contact ball, a sliding contact plate, a sliding ball, an elastic sleeve plate, an elastic sliding piece, an elastic ball and a connecting rod. The combination of the receiving ball and the sliding ball enables the sliding abutting ball to be flexibly connected with the inner wall of the sliding abutting plate, and by reducing the contact area, the friction force is reduced, which is convenient for the sliding of the limiting ball block, and the elastic sleeve is squeezed. When the elastic deformation occurs due to pressure, the elastic sliding piece is pushed to undergo elastic deformation, and at the same time, the connecting rod pulls the elastic ball to undergo elastic deformation. Through the cooperation of the above structures, the vibration amplitude generated by the shaking of the device is reduced to ensure the stability of the device.

3. The present invention provides a device for realizing the position calibration of a medical linear accelerator, which adopts the cooperation between a limit slide bar, a support frame, a hydraulic lifting device, a limit link, a sliding assembly, a rotating shaft and a sliding wheel. When adjusting the height, first push the support frame through the hydraulic lifting device to drive the limit slide bar to move upward, so that the limit bottom plate and the main body of the position calibration device move upward together, and cooperate with the function of the rotating shaft and the sliding wheel to reduce the contact with the inner wall of the bottom support sleeve. Finally, the upward movement range of the limit bottom plate is limited by the action of the limit link, so as to avoid the problem of inconvenient adjustment of the height, which leads to low efficiency of the device.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the schematic sectional view of structural sliding limit mechanism and height adjustment mechanism of the present invention;

Fig. 3 is the enlarged schematic view of structure A of the present invention;

Fig. 4 is a schematic cross-sectional view of the structural elastic stabilization component of the present invention;

Fig. 5 is the enlarged schematic view of structure B of the present invention;

FIG. 6 is an enlarged schematic view of structure C of the present invention.

In the figure: 1. The main body of the position calibration device; 11. The limit plate; 12. The power sliding assembly; 13. The bottom support sleeve;

2. Sliding limit mechanism; 21. Limiting ball block; 22. Limiting chute; 23. Auxiliary activity component; 231. Sliding contact ball; 232. Sliding contact plate; 233. Sliding ball; 24. Connection block ; 25, elastic stability assembly; 251, elastic cover plate; 252, elastic slide; 253, elastic ball; 254, connecting rod; 26, gas spring;

3. Height adjustment mechanism; 31. Limit sliding rod; 32. Support frame; 33. Hydraulic lifting device; 34. Limit connecting rod; 35. Slide assembly; 351. Rotation shaft;

Detailed ways

Below in conjunction with embodiment the present invention is described in further detail:

Example 1

As shown in Figures 1-6, the present invention provides a device for realizing the position calibration of a medical linear accelerator, including a position calibration device main body 1, the bottom of the position calibration device main body 1 is provided with a limit base plate 11, and the limit base plate 11 is aligned with the position calibration device. A power sliding assembly 12 is arranged between the main body 1 of the device, a bottom support sleeve 13 is arranged on the outside of the limit bottom plate 11, a sliding limit mechanism 2 is arranged between the main body 1 of the position calibration device and the limit bottom plate 11, and the limit bottom plate 11 A height adjustment mechanism 3 is arranged between the bottom support sleeve 13, the sliding limit mechanism 2 includes a limit ball block 21, the upper surface of the limit ball block 21 is fixedly connected with the lower surface of the position calibration device main body 1, and the position calibration device The bottom of the main body 1 is provided with a limit chute 22, an auxiliary movable component 23, a connecting block 24, an elastic stabilization component 25 and an air spring 26. The height adjustment mechanism 3 includes a limit slide bar 31, and the upper surface of the limit slide bar 31 is connected The lower surface of the base plate 11 is fixedly connected, and the bottom of the limit base plate 11 is provided with a support frame 32, a hydraulic lifting device 33, a limit connecting rod 34 and a sliding assembly 35, and the limit chute 22 is opened in the inside of the limit base plate 11. The outer surface of the position ball block 21 is movably connected with the inwall of the spacer chute 22, and the auxiliary movable assembly 23 is arranged between the outer surface of the spacer ball block 21 and the inwall of the spacer chute 22, and the outer surface of the connection block 24 is connected to the inwall of the spacer chute 22. The inner wall of the limit chute 22 is flexibly connected, and the elastic stabilizing assembly 25 is arranged between the outer surface of the connection block 24 and the inner wall of the limit chute 22, and the two ends of the gas spring 26 are connected with the outer surface of the connection block 24, the limit The inner wall of chute 22 is flexibly connected.

In this embodiment, firstly, the limit ball 21 is movably connected with the inner wall of the limit chute 22, and with the action of the auxiliary movable component 23, the force-bearing area between the limit ball 21 and the limit ball 21 is reduced, thereby reducing The frictional force, and then through the connecting block 24, squeezes the elastic stabilizing component 25 and the gas spring 26 to cause elastic deformation, and cooperates with the frictional resistance between the structures, so that when the main body 1 of the position calibration device shakes, it can maintain a relatively stable supporting effect , to avoid the situation where the position shifts during the sliding process, resulting in a large error in calibration.

Example 2

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: preferably, the auxiliary movable component 23 includes a sliding contact ball 231, and the outer surface of the sliding contact ball 231 and the limit The outer surface of the ball block 21 is flexibly connected, and the outer surface of the sliding contact ball 231 is movably connected with a sliding ball 233, and the outer surfaces of the sliding contact ball 231 and the sliding ball 233 are movably connected with a sliding abutment plate 232, and the sliding abutment ball 231 is movably connected with a sliding abutment plate 232 on the outer surface of the sliding contact ball 231. The outer surface of the connecting plate 232 is fixedly connected with the outer surface of the connecting block 24, and the elastic stabilization component 25 includes an elastic sleeve plate 251, and the outer surface of the elastic sleeve plate 251 is connected with the lower surface of the connecting block 24 and the inner wall of the limit chute 22 respectively. Fixedly connected, the inner wall of the elastic sleeve plate 251 is movably connected with an elastic slide 252, the outer surface of the elastic slide 252 is fixedly connected with an elastic ball 253, and the outer surface of the elastic ball 253 is fixedly connected with a connecting rod 254, and the connecting rod 254 One end is flexibly connected with the inner wall of the elastic sleeve plate 251 .

In this embodiment, the sliding contact ball 231 cooperates with the sliding contact ball 233, so that the sliding contact ball 231 can be flexibly connected with the inner wall of the sliding contact plate 232, and by reducing the contact area, the friction force is reduced, which is convenient When the limit ball 21 slides, when the elastic cover plate 251 is squeezed and elastically deformed, the elastic sliding piece 252 is pushed to elastically deform, and at the same time, the connecting rod 254 pulls the elastic ball 253 to elastically deform. Through the cooperation of the above structures, the The vibration amplitude generated by the shaking of the device is reduced to ensure the stability of the device.

Example 3

As shown in Figures 1-6, on the basis of Embodiment 1, the present invention provides a technical solution: preferably, the outer surface of the support frame 32 is fixedly connected to the outer surface of the limit slide bar 31, and the hydraulic lifting device 33 One end is fixedly connected with the outer surface of the support frame 32, the other end of the hydraulic lifting device 33 is fixedly connected with the inner wall of the bottom support sleeve 13, and one end of the limit link 34 is movably connected with the outer surface of the support frame 32, and the limit link The other end of 34 is movably connected with the inner wall of the bottom supporting sleeve 13, and the sliding assembly 35 is arranged between the outer surface of the limit slide bar 31 and the inner wall of the bottom supporting sleeve 13. The sliding assembly 35 includes a rotating shaft 351, and the rotating shaft Both ends of 351 are fixedly connected with the inner wall of the limit slide bar 31, and the outer surface of the rotating shaft 351 is movably connected with a sliding wheel 352, and the outer surface of the sliding wheel 352 is movably connected with the inner wall of the bottom support sleeve 13.

In this embodiment, when the height needs to be adjusted, the hydraulic lifting device 33 first pushes the support frame 32 to drive the limit slide bar 31 to move upward, so that the limit base plate 11 and the main body 1 of the position calibration device move upward together, and cooperate with the rotating shaft 351 and sliding wheel 352 reduce the frictional force with the inner wall of the bottom support sleeve 13, and finally limit the upward movement range of the limit bottom plate 11 through the action of the limit link 34, avoiding inconvenient adjustment of the height, which will cause the device to use The problem of low efficiency.

The working principle of the device for realizing the position calibration of the medical linear accelerator will be described in detail below.

As shown in Figures 1-6, firstly, the limit ball 21 is flexibly connected with the inner wall of the limit chute 22, and the force bearing area between the limit ball 21 and the limit ball 21 is reduced by cooperating with the auxiliary movable component 23, thereby Reduce the frictional force, and then press the elastic stabilization component 25 and the gas spring 26 through the connecting block 24 to cause elastic deformation, cooperate with the frictional resistance between the various structures, so that the main body 1 of the position calibration device can maintain a relatively stable position when it shakes Supporting function, when height adjustment is required, the hydraulic lifting device 33 first pushes the support frame 32 to drive the limit slide bar 31 to move upward, so that the limit base plate 11 and the main body 1 of the position calibration device move upward together, and cooperate with the rotating shaft 351 and the sliding The role of the wheel 352 is to reduce the frictional force with the inner wall of the bottom support sleeve 13, and finally, the upward movement range of the limit bottom plate 11 is limited by the action of the limit link 34, so as to avoid inconvenient adjustment of the height, resulting in low efficiency of the device The problem.

The above has generally described the present invention in detail, but some modifications or improvements can be made on the basis of the present invention, which are obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the protection scope of the present invention.

Claims (8)

1. A device for realizing the position calibration of a medical linear accelerator, comprising a position calibration device main body (1), the bottom of the position calibration device main body (1) is provided with a limiting base plate (11), and the limiting base plate (11) and A power sliding assembly (12) is arranged between the main body (1) of the position calibration device, and a bottom support sleeve (13) is provided on the outer side of the limit bottom plate (11), and it is characterized in that: the main body of the position calibration device (1 ) and the limit bottom plate (11) is provided with a sliding limit mechanism (2), between the limit bottom plate (11) and the bottom support sleeve (13) is provided with a height adjustment mechanism (3), the sliding The limit mechanism (2) includes a limit ball block (21), the upper surface of the limit ball block (21) is fixedly connected with the lower surface of the position calibration device main body (1), and the position calibration device main body (1) The bottom of the bottom is provided with a limit chute (22), an auxiliary movable component (23), a connecting block (24), an elastic stabilization component (25) and a gas spring (26), and the height adjustment mechanism (3) includes a limit slide bar ( 31), the upper surface of the limiting slide bar (31) is fixedly connected with the lower surface of the limiting base plate (11), and the bottom of the limiting base plate (11) is provided with a support frame (32), a hydraulic lifting device ( 33), limit connecting rod (34) and sliding assembly (35). 2. A device for position calibration of a medical linear accelerator according to claim 1, characterized in that: the limit chute (22) is set inside the limit plate (11), and the limit ball block The outer surface of (21) is movably connected with the inner wall of the limit chute (22), and the auxiliary movable component (23) is arranged between the outer surface of the limit ball block (21) and the inner wall of the limit chute (22). Between, the outer surface of the connecting block (24) is flexibly connected with the inner wall of the limiting chute (22), and the elastic stabilization component (25) is arranged on the outer surface of the connecting block (24) and the limiting chute (22 ), the two ends of the gas spring (26) are respectively movably connected with the outer surface of the connection block (24) and the inner wall of the limiting chute (22). 3. A device for position calibration of a medical linear accelerator according to claim 1, characterized in that: the auxiliary movable assembly (23) includes a sliding contact ball (231), and the sliding contact ball (231 ) is movably connected with the outer surface of the limit ball block (21), the sliding ball (233) is movably connected to the outer surface of the sliding abutting ball (231), the sliding abutting ball (231), Sliding abutment plates (232) are movably connected to the outer surfaces of the sliding balls (233), and the outer surfaces of the sliding abutment plates (232) are fixedly connected to the outer surface of the connecting block (24). 4. The device for position calibration of a medical linear accelerator according to claim 1, characterized in that: the elastic stabilization component (25) includes an elastic sleeve (251), and the elastic sleeve (251) The outer surface is respectively fixedly connected with the lower surface of the connection block (24) and the inner wall of the limit chute (22), and the inner wall of the elastic sleeve (251) is movably connected with an elastic sliding piece (252). 5. A device for position calibration of a medical linear accelerator according to claim 4, characterized in that: an elastic ball (253) is fixedly connected to the outer surface of the elastic slide (252), and the elastic ball ( 253) is fixedly connected with a connecting rod (254), and one end of the connecting rod (254) is movably connected with the inner wall of the elastic sleeve (251). 6. A device for realizing the position calibration of a medical linear accelerator according to claim 1, characterized in that: the outer surface of the support frame (32) is fixedly connected with the outer surface of the limit slide bar (31), and the One end of the hydraulic lifting device (33) is fixedly connected to the outer surface of the support frame (32), and the other end of the hydraulic lifting device (33) is fixedly connected to the inner wall of the bottom support sleeve (13). 7. A device for realizing the position calibration of a medical linear accelerator according to claim 1, characterized in that: one end of the limit link (34) is movably connected with the outer surface of the support frame (32), and the limit The other end of the positioning link (34) is movably connected with the inner wall of the bottom support sleeve (13), and the sliding assembly (35) is arranged on the outer surface of the limit slide rod (31) and the bottom support sleeve (13). between the inner walls. 8. A device for position calibration of a medical linear accelerator according to claim 1, characterized in that: the sliding assembly (35) includes a rotating shaft (351), and both ends of the rotating shaft (351) are Fixedly connected with the inner wall of the limit slide bar (31), the outer surface of the rotating shaft (351) is movably connected with a sliding wheel (352), and the outer surface of the sliding wheel (352) is connected with the bottom support sleeve (13 ) of the inner wall activity connection.

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