阅读说明：本技术 一种用于超导质子治疗的束流输运线束流准直系统 (Beam transport line beam collimation system for superconducting proton treatment ) 是由 郑金星 宋云涛 谷鹏飞 王成 黄迪西 沈俊松 黄发领 张午权 韩曼芬 朱雷 于 2020-06-19 设计创作，主要内容包括：本发明公开了一种用于超导质子治疗的束流输运线束流准直系统,包括支撑平台、真空腔体和传动平台；所述支撑平台上固定连接有安装支架,所述安装支架上通过传动平台活动连接有移动支架,所述移动支架的顶端固定连接有第一波纹管,所述移动支架和第一波纹管之间固定连接有支撑杆；所述真空腔体安装在支撑平台上,所述真空腔体的底板对称固定连接有固定板,所述固定板之间活动连接有准直块,所述准直块的底端与支撑杆连接,本发明便于调整准直块的位置,从而达到对束流进行准直的目的。(The invention discloses a beam collimation system of a beam transport line for superconducting proton treatment, which comprises a supporting platform, a vacuum cavity and a transmission platform, wherein the supporting platform is provided with a vacuum cavity; the support platform is fixedly connected with an installation support, the installation support is movably connected with a movable support through a transmission platform, the top end of the movable support is fixedly connected with a first corrugated pipe, and a support rod is fixedly connected between the movable support and the first corrugated pipe; the vacuum chamber is arranged on the supporting platform, the bottom plates of the vacuum chambers are symmetrically and fixedly connected with the fixed plates, the collimation blocks are movably connected between the fixed plates, and the bottom ends of the collimation blocks are connected with the supporting rods.)

1. A beam current collimation system of a beam current transportation line for superconducting proton therapy is characterized by comprising a supporting platform (1), a vacuum cavity (2) and a transmission platform (3);

the supporting platform (1) is fixedly connected with a mounting bracket (5), the mounting bracket (5) is movably connected with a movable bracket (14) through a transmission platform (3), the top end of the movable bracket (14) is fixedly connected with a first corrugated pipe (15), and a supporting rod (17) is fixedly connected between the movable bracket (14) and the first corrugated pipe (15);

the vacuum chamber (2) is arranged on the supporting platform (1), the bottom plate of the vacuum chamber (2) is symmetrically and fixedly connected with fixing plates (20), collimation blocks (18) are movably connected between the fixing plates (20), and the bottom ends of the collimation blocks (18) are connected with supporting rods (17).

2. The beam current transport line beam current collimation system for superconducting proton therapy as claimed in claim 1, wherein the transmission platform (3) comprises a lead screw (9) vertically and rotatably connected to a mounting bracket (5), a motor (4) for driving the lead screw (9) is fixedly connected to the mounting bracket (5), a nut (11) is in threaded connection with the lead screw (9), a slider (12) which is in sliding connection with the mounting bracket (5) is fixedly connected to the nut (11), the slider (12) is in sliding connection with the mounting bracket (5), and the slider (12) is fixedly connected with a movable bracket (14).

3. The beam collimation system for the superconducting proton therapy as claimed in claim 2, wherein a first belt pulley (6) and a second belt pulley (8) are fixedly connected to a driving shaft of the motor (4) and a lead screw (9), respectively, and a synchronous belt (7) is in transmission connection between the first belt pulley (6) and the second belt pulley (8).

4. A beam transport line beam collimation system for superconducting proton therapy according to claim 2, characterized in that said mounting bracket (5) is provided with a guide rail (10) for sliding connection of a slider (12).

5. A beam collimation system for a superconducting proton therapy beam transport line according to claim 2, characterized in that the slide (12) is fixedly connected to the mobile support (14) by means of a mounting plate (13).

6. A beam collimation system for a beam transport line for superconducting proton therapy according to claim 1, characterized in that the bottom end and the top end of the vacuum chamber (2) are fixedly connected with a chamber bottom plate (24) and a chamber cover plate (25), respectively;

the fixed plates (20) are symmetrically and fixedly connected to the cavity bottom plate (24).

7. The beam current collimation system for the superconducting proton therapy of claim 1, wherein connecting blocks (19) are fixedly connected to opposite side walls of the fixing plate (20), and guide grooves for movably connecting the collimation blocks (18) are formed in the connecting blocks (19).

8. A beam transport line beam collimation system for superconducting proton therapy according to claim 1, characterized in that a first KF flange (16) is fixedly connected to the top end of the first bellows (15), the first KF flange (16) being mounted on the cavity floor (24);

the collimating block (18) is provided with a conical hole.

9. A beam transport line beam collimation system for superconducting proton therapy according to claim 1, wherein a second KF flange (21) and a third KF flange (23) are respectively installed at two ends of the vacuum cavity (2), and one end of the second KF flange (21) far away from the vacuum cavity (2) is connected with a second bellows (26) through a vacuum chain type hoop (22).

Technical Field

The invention relates to the technical field of medical instruments for proton treatment, in particular to a beam current collimation system for a beam current transportation line for superconducting proton treatment.

Background

The traditional cancer treatment uses high-energy photons such as X-rays or gamma rays to destroy cancer cells, and the greatest disadvantage of the treatment method is that healthy cells surrounding the cancer cells are also irradiated by the radiation, so that the cancer cells are killed and secondary damage is caused to human bodies. Meanwhile, the conventional treatment method requires a very large dose to kill cancer cells at a deep portion because photon energy is rapidly decreased in the human body.

Proton therapy is a technology that has been rapidly developed in the field of cancer treatment in recent years, and its advantages are more apparent especially in the course of cancer treatment where there is a high risk of using conventional therapeutic methods. Protons, neutrons and electrons are the main elements of atomic composition, a proton has a unit mass and a unit positive charge, a proton has a half-life greater than 1032, and a proton will decay into a neutron, a positron and a neutrino.

When proton is used for treatment, the proton curve shows that the curve is increased slowly and then becomes fast, and the curve goes to zero after the peak value is increased to the Bragg peak value, and the inherent characteristic of the proton provides ideal treatment performance for treating tumors, and has the following advantages: as long as the peak part is aligned to the tumor focus, the tumor part receives the maximum dosage value, the dosage utilization rate is greatly improved, and the curative effect is best; normal cells, including skin, before a tumor are usually exposed to the maximum dose of 1/3-1/2, i.e., less damage than in the case of X-rays or electrons; normal cells or the nameplate organs behind the tumor are essentially not irradiated and not damaged. The visible proton therapy can overcome the defects of X-ray and electron therapy and become an ideal means for treating tumors, and the root of the visible proton therapy is the Bragg peak characteristic derived from protons.

However, in the traditional method, the beam angle is ensured by adopting a correcting magnet, so that the manufacturing cost is high, the beam angle can only be finely adjusted, and the effect is not ideal in practical application.

Disclosure of Invention

The invention aims to provide a beam collimation system of a beam transport line for superconducting proton treatment, which aims to solve the problems that the traditional method provided in the background art mostly adopts a correcting magnet to ensure the beam angle, the manufacturing cost is high, only fine adjustment of the beam angle can be carried out, and the effect is not ideal in practical application.

In order to achieve the purpose, the invention provides the following technical scheme:

a beam current transport line beam current collimation system for superconducting proton therapy comprises a supporting platform, a vacuum cavity and a transmission platform;

the support platform is fixedly connected with an installation support, the installation support is movably connected with a movable support through a transmission platform, the top end of the movable support is fixedly connected with a first corrugated pipe, and a support rod is fixedly connected between the movable support and the first corrugated pipe;

the vacuum cavity is installed on the supporting platform, the bottom plate of the vacuum cavity is symmetrically and fixedly connected with fixing plates, collimation blocks are movably connected between the fixing plates, and the bottom ends of the collimation blocks are connected with the supporting rods.

As a further scheme of the invention: the transmission platform comprises a lead screw vertically connected to the mounting support in a rotating mode, a motor fixedly connected to the mounting support and used for driving the lead screw is connected to the mounting support in a rotating mode, a nut is connected to the lead screw in a threaded mode, a sliding block connected to the nut in a sliding mode is connected to the mounting support in a sliding mode, the sliding block is connected to the mounting support in a sliding mode, and the sliding block is fixedly connected with the moving support.

As a further scheme of the invention: the utility model discloses a nut, including motor, drive shaft, first band pulley, hold-in range, nut and nut threaded connection, the drive shaft of motor and lead screw on the first band pulley of fixedly connected with and the second band pulley of difference, the transmission is connected with the hold-in range between first band pulley and the second band pulley, motor work drives first band pulley and rotates, because the rotation of lead screw is realized in the cooperation of first band pulley, hold-in range and second band pulley, simultaneously because lead screw and nut threaded connection, and fixedly connected with sliding connection is at the slider on the installing support on the nut, slider sliding connection is on the installing support, consequently realize the nut upwards or move down at lead screw pivoted in-process.

As a further scheme of the invention: the mounting bracket is provided with a guide rail for sliding connection of the sliding block, and the sliding block can slide on the mounting bracket conveniently due to the arrangement of the guide rail.

As a further scheme of the invention: the slider passes through mounting panel and movable support fixed connection, is convenient for realize slider and movable support fixed connection through setting up of mounting panel.

As a further scheme of the invention: the bottom end and the top end of the vacuum cavity are fixedly connected with a cavity bottom plate and a cavity cover plate respectively, the cavity bottom plate and the vacuum cavity are welded into a whole, and the cavity cover plate is fastened with the vacuum cavity through screws.

The fixed plates are symmetrically and fixedly connected to the cavity bottom plate.

As a further scheme of the invention: the connecting blocks are fixedly connected to the opposite side walls of the fixing plate, guide grooves used for movably connecting the collimating blocks are formed in the connecting blocks, and the collimating blocks can move upwards or downwards conveniently through the guide grooves in the connecting blocks.

As a further scheme of the invention: the top end of the first corrugated pipe is fixedly connected with a first KF flange, the first KF flange is installed on the cavity bottom plate, the top end of the supporting rod is fixedly connected to the bottom end of the collimating block, and the end part of the first corrugated pipe is installed on the cavity bottom plate through the first KF flange, so that the airtightness of the vacuum cavity is guaranteed;

the collimating block is provided with four conical holes with different specifications for collimating beam flows, and is made of a high-temperature-resistant non-magnetic material, so that the long-term working reliability of the collimating block is ensured.

As a further scheme of the invention: and a second KF flange and a third KF flange are respectively installed at two ends of the vacuum cavity, and one end of the second KF flange, far away from the vacuum cavity, is connected with a second corrugated pipe through a vacuum chain type clamp.

Compared with the prior art, the invention has the beneficial effects that:

through setting up transmission platform, thereby be convenient for adjust the position of collimation piece, motor work drives first band pulley and rotates, because first band pulley, the rotation of lead screw is realized in the cooperation of hold-in range and second band pulley, simultaneously because lead screw and nut threaded connection, and fixedly connected with sliding connection is at the slider on the installing support on the nut, slider sliding connection is on the installing support, consequently, realize the nut removal at lead screw pivoted in-process, and then drive the removal support through the slider and remove, the removal support links to each other with first bellows, promote or tensile first bellows, make the collimation piece of installing on the bracing piece upwards or downstream simultaneously.

The connecting block is provided with the guide groove for movably connecting the collimating block, so that the collimating block can move upwards or downwards conveniently.

Through the first KF flange of the top fixedly connected with at first bellows to with first KF flange mounting on the cavity bottom plate, first bellows tip uses first KF flange mounting on the cavity bottom plate, guarantees vacuum chamber's seal.

Through installing second KF flange and third KF flange respectively in vacuum cavity's both ends, vacuum cavity is preceding, back respectively with second KF flange and third KF flange and vacuum system connection to guarantee vacuum cavity in the heavy leakproofness of use in all directions, its leak rate is less than 1.0 × 10^-11Pa·m³And/s, ensuring the performance of the beam current in a vacuum environment.

The beam collimation system for the beam transport line of the superconducting proton therapy is convenient for adjusting the position of the collimation block, thereby achieving the aim of collimating the beam.

Drawings

FIG. 1 is a front view of a beam delivery line beam collimation system for superconducting proton therapy;

FIG. 2 is a perspective view of a beam delivery line beam collimation system for superconducting proton therapy;

FIG. 3 is a schematic view of the connection of a first bellows to a mounting bracket in a beam delivery line beam collimation system for superconducting proton therapy;

FIG. 4 is a schematic diagram of the connection of a cavity floor and a cavity cover plate in a beam transport line beam collimation system for superconducting proton therapy;

FIG. 5 is a schematic view of the connection of a first bellows and a collimating block in a beam delivery line beam collimation system for superconducting proton therapy;

FIG. 6 is a schematic view of the connection of a support rod and a mounting plate in a beam collimation system for superconducting proton therapy;

FIG. 7 is a schematic view of the connection of a slider and a mounting bracket in a beam collimation system for superconducting proton therapy;

in the figure: 1. a support platform; 2. a vacuum chamber; 3. a transmission platform; 4. a motor; 5. mounting a bracket; 6. a first pulley; 7. a synchronous belt; 8. a second pulley; 9. a screw rod; 10. a guide rail; 11. a nut; 12. a slider; 13. mounting a plate; 14. moving the support; 15. a first bellows; 16. a first KF flange; 17. a support bar; 18. a collimating block; 19. connecting blocks; 20. a fixing plate; 21. a second KF flange; 22. a vacuum chain type hoop; 23. a third KF flange; 24. a cavity bottom plate; 25. a cavity cover plate; 26. a second bellows.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, in an embodiment of the present invention, a beam collimation system for a beam transport line for superconducting proton therapy includes a support platform 1, a vacuum chamber 2, and a transmission platform 3;

the supporting platform 1 is fixedly connected with a mounting bracket 5, the mounting bracket 5 is movably connected with a movable bracket 14 through a transmission platform 3, the top end of the movable bracket 14 is fixedly connected with a first corrugated pipe 15, and a supporting rod 17 is fixedly connected between the movable bracket 14 and the first corrugated pipe 15;

vacuum chamber 2 installs on supporting platform 1, and vacuum chamber 2's bottom plate symmetry fixedly connected with fixed plate 20 specifically is: the fixing plates 20 are symmetrically and fixedly connected to a bottom plate 24 of the vacuum chamber 2, the collimating blocks 18 are movably connected between the fixing plates 20, and the bottom ends of the collimating blocks 18 are connected with the supporting rods 17.

The transmission platform 3 comprises a lead screw 9 vertically connected to the mounting support 5 in a rotating mode, a motor 4 fixedly connected to the mounting support 5 and used for driving the lead screw 9 is connected to the lead screw 9 in a rotating mode, a nut 11 is connected to the lead screw 9 in a threaded mode, a sliding block 12 fixedly connected to the nut 11 and slidably connected to the mounting support 5 is connected to the sliding block 12, the sliding block 12 is slidably connected to the mounting support 5, and the sliding block 12 is fixedly connected with the moving support 14.

Respectively fixedly connected with first band pulley 6 and second band pulley 8 on motor 4's the drive shaft and the lead screw 9, the transmission is connected with hold-in range 7 between first band pulley 6 and the second band pulley 8, motor 4 works and drives first band pulley 6 and rotate, because first band pulley 6, the rotation of lead screw 9 is realized to the cooperation of hold-in range 7 and second band pulley 8, simultaneously because lead screw 9 and 11 threaded connection of nut, and fixedly connected with sliding connection is on the nut 11 slider 12 on installing support 5, slider 12 sliding connection is on installing support 5, consequently realize nut 11 upwards or move down at lead screw 9 pivoted in-process, and then drive movable support 14 upwards or move down through slider 12.

The mounting bracket 5 is provided with a guide rail 10 for slidably connecting a slide block 12, and the guide rail 10 is arranged to facilitate the sliding of the slide block 12 relative to the mounting bracket 5.

The sliding block 12 is fixedly connected with the moving bracket 14 through the mounting plate 13, and the sliding block 12 is fixedly connected with the moving bracket 14 through the mounting plate 13.

The bottom end and the top end of the vacuum cavity 2 are fixedly connected with a cavity bottom plate 24 and a cavity cover plate 25 respectively, the cavity bottom plate 24 and the vacuum cavity 2 are welded into a whole, and the cavity cover plate 25 is fastened with the vacuum cavity 2 through screws.

The fixed plate 20 is symmetrically and fixedly connected to the cavity bottom plate 24.

The fixed plate 20 is fixedly connected with a connecting block 19 on the opposite side wall, a guide groove for movably connecting the collimating block 18 is formed in the connecting block 19, and the collimating block 18 can move upwards or downwards conveniently through the guide groove formed in the connecting block 19.

The top end of the first corrugated pipe 15 is fixedly connected with a first KF flange 16, the first KF flange 16 is installed on a cavity bottom plate 24, a support rod 17 is fixedly connected between the movable support 14 and the first corrugated pipe 15, the top end of the support rod 17 is fixedly connected to the bottom end of the collimation block 18, and the end part of the first corrugated pipe 15 is installed on the cavity bottom plate 24 through the first KF flange 16, so that the tightness of the vacuum cavity 2 is guaranteed;

the collimating block 18 is provided with a conical hole, the collimating block 18 is provided with four conical holes with different specifications for collimating beam flow, and the collimating block is made of high-temperature-resistant non-magnetic material, so that the long-term working reliability of the collimating block is ensured.

Second KF flange 21 and third KF flange 23 are installed respectively to vacuum chamber 2's both ends, and the one end that vacuum chamber 2 was kept away from to second KF flange 21 is connected with second bellows 26 through vacuum chain clamp 22, and vacuum chamber 2 is preceding, back respectively with second KF flange 21 and third KF flange 23 and vacuum system connection, thereby guarantee vacuum chamber 2 in the leakproofness that the use is heavy in all directions, its leak rate is less than 1.0 × 10^-11Pa·m³And/s, ensuring the performance of the beam current in a vacuum environment.

When the invention is used, the water-saving agent is added,

the motor 4 works to drive the first belt wheel 6 to rotate, because the first belt wheel 6, the synchronous belt 7 and the second belt wheel 8 are matched to realize the rotation of the screw rod 9, meanwhile, because the screw rod 9 is in threaded connection with the nut 11, the nut 11 is fixedly connected with a sliding block 12 in sliding connection with the mounting bracket 5, the sliding block 12 is in sliding connection with the mounting bracket 5, the nut 11 is moved in the rotating process of the screw rod 9, the sliding bracket 14 is driven by the sliding block 12 to move, the moving bracket 14 is connected with the first corrugated pipe 15, the first corrugated pipe 15 is pushed or stretched, meanwhile, the collimation block 18 arranged on the support rod 17 is enabled to move upwards or downwards, four conical holes with different specifications are designed in the collimation block 18 and used for collimating beam flows, the collimation block is made of high-temperature-resistant non-magnetic materials, and the reliability of long-term.

Although the present description is described in terms of embodiments, not every embodiment includes only a single embodiment, and such description is for clarity only, and those skilled in the art should be able to integrate the description as a whole, and the embodiments can be appropriately combined to form other embodiments as will be understood by those skilled in the art.

Therefore, the above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application; all changes which come within the meaning and range of equivalency of the claims are to be embraced within their scope.