CN219815057U

CN219815057U - Multi-leaf collimator for radiotherapy machine

Info

Publication number: CN219815057U
Application number: CN202321133257.5U
Authority: CN
Inventors: 陈卫; 韩梦云; 许浩
Original assignee: Anhui Boshuang Network Technology Co ltd
Current assignee: Anhui Boshuang Network Technology Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-13
Anticipated expiration: 2033-05-11

Abstract

The utility model relates to the technical field of radiotherapy, in particular to a multi-leaf collimator for a radiotherapy machine, which comprises a mounting seat, wherein an inner cavity of the mounting seat is fixedly connected with a collimator main body, one side of the mounting seat is fixedly connected with a top cover, one sides of the mounting seat and the top cover are respectively provided with an irradiation opening, the inner wall of the irradiation opening is fixedly connected with a dust remover, and the dust remover comprises: the dustproof cover, the cathode coil, the positive pole coil, the connecting seat, the power circle, the contact point, a plurality of cathode coils of inner wall fixedly connected with quantity of dustproof cover, the inner wall fixedly connected with quantity of dustproof cover is a plurality of positive pole coils, and cathode coil and positive pole coil are crisscross to arrange in proper order, one side fixedly connected with connecting seat of dustproof cover, the inner wall fixedly connected with power circle of connecting seat, one side electric connection of power circle has the contact point that is two in quantity, be favorable to avoiding attaching the dust on the blade of multi-leaf collimator, avoid the beam of radiation scope inaccurate.

Description

Multi-leaf collimator for radiotherapy machine

Technical Field

The utility model relates to the technical field of radiotherapy, in particular to a multi-leaf collimator for a radiotherapy machine.

Background

Multi-leaf collimators are an important component of contemporary radiation therapy machines. The device is arranged under a machine head of a radiotherapy machine and used for limiting the irradiation range of a ray beam, forming an irregular radiation field suitable for various target area shapes and realizing conformal radiotherapy.

CN217886816U discloses a multi-leaf collimator comprising, in an embodiment, a leaf drive mechanism configured to drive the collimator leaves into motion, a leaf carrier having a layered structure, a sleeve motion slide hole provided in the leaf carrier coupled to the leaf drive mechanism and a leaf motion slide slot provided in a surface of the leaf carrier coupled to the collimator leaves. The utility model combines the penumbra performance of the multi-leaf collimator when the leaves are opened and the closing shielding performance when the leaves are closed through the structural design.

Although the multi-leaf collimator solves the defect that the leaf of the collimator cannot be completely closed in the field, the multi-leaf collimator still has some defects: firstly, the multi-leaf collimator that this patent provided is because the blade exposes in the air, and after long-time use, the collimator blade is attached to dust and impurity easily, leads to the ray beam irradiation range inaccuracy, and secondly, because the range of multi-leaf collimator is very intensive, when single blade takes place to damage, is difficult to take off single blade and maintains or change, has increased maintenance degree of difficulty and cost of maintenance.

Disclosure of Invention

The present utility model aims to provide a multi-leaf collimator for a radiotherapy apparatus which solves the problems set out in the background art above.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

the utility model provides a multi-leaf collimator for radiotherapy machine, includes the mount pad, the inner chamber fixedly connected with collimator main part of mount pad, one side fixedly connected with top cap of mount pad, the irradiation mouth has all been seted up to one side of mount pad and top cap, the inner wall fixedly connected with dust remover of irradiation mouth, the dust remover is including: the anti-dust device comprises a dust cover, cathode coils, anode coils, a connecting seat, a power supply ring, contact points and light leakage openings, wherein the cathode coils are fixedly connected with the inner wall of the dust cover, the anode coils are staggered and sequentially arranged, one side of the dust cover is fixedly connected with the connecting seat, the power supply ring is fixedly connected with the inner wall of the connecting seat, one side of the power supply ring is electrically connected with the contact points with the number of two, and one end of each contact point is electrically connected with the cathode coils and the anode coils.

Preferably, the collimator body includes: blade supporting seat, bottom plate, curb plate, motor, actuating lever, spread groove, install and tear ware, blade main part, the top and the bottom of blade supporting seat are a fixedly connected with curb plate respectively, a plurality of motors of one side fixedly connected with quantity of curb plate, the actuating lever has been cup jointed in one side activity of motor, the one end fixedly connected with blade main part of actuating lever, the spread groove has been seted up to the one end of blade main part, the inner chamber swing joint of spread groove has the install and tear the ware open, install and tear the ware open including: the device comprises a transmission plate, a rubber column, a spring, a linkage plate, a telescopic rod, a clamping block, a positioning plate and a limiting groove, wherein the rubber column is fixedly connected to one side of the transmission plate, the spring is fixedly connected to one side of the rubber column, the linkage plate is fixedly connected to one end of the rubber column, the telescopic rod is fixedly connected to one side of the linkage plate, the clamping block is fixedly connected to the outer side of the telescopic rod, the positioning plate is fixedly connected to an inner cavity of the connecting groove, and the limiting groove penetrating through the positioning plate is formed in one side of the positioning plate.

Preferably, the outer side of the connecting seat is in transition fit with the inner wall of the irradiation port.

Preferably, a light leakage port penetrating through the connecting seat is formed in one side of the connecting seat.

Preferably, the outer edge of the clamping block is mutually matched with the inner wall of the limiting groove.

Preferably, a plurality of deflection blocks are fixedly connected to one side outer edge of the transmission plate and one side outer edge of the linkage plate, and the deflection blocks positioned on one side of the transmission plate and the deflection blocks positioned on one side outer edge of the linkage plate are mutually staggered.

Compared with the prior art, the utility model has the beneficial effects that:

1. according to the utility model, the dust remover is arranged, so that most of dust in the air entering the inner cavity of the mounting seat through the dust remover is removed, dust is prevented from adhering to the blades of the multi-blade collimator, and the inaccuracy of the irradiation range of the ray beam is avoided;

2. according to the utility model, the mounting and dismounting device is arranged, and the blade main body can be moved forwards by pressing the blade main body, so that the driving rod is separated from the inner cavity of the connecting groove, and the blade main body can be dismounted from the driving rod, thereby being beneficial to independently taking down the damaged blade when the blade of the multi-blade collimator is damaged, only needing to repair or replace the damaged blade, and reducing the maintenance difficulty and the maintenance cost.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of the overall structure of the collimator body of FIG. 1 according to the present utility model;

FIG. 3 is a schematic diagram of the overall structure of the motor of FIG. 2 according to the present utility model;

FIG. 4 is a schematic view of the overall structure of the dust collector of FIG. 1 according to the present utility model;

FIG. 5 is a schematic view of the overall structure of the mounting and dismounting device of FIG. 3 according to the present utility model;

in the figure: 1. a mounting base; 2. a collimator body; 3. a top cover; 4. an illumination port; 5. a dust remover; 21. a blade support base; 22. a bottom plate; 23. a side plate; 24. a motor; 25. a driving rod; 26. a connecting groove; 27. an installing and detaching device; 28. a blade body; 51. a dust cover; 52. a cathode coil; 53. an anode coil; 54. a connecting seat; 55. a power supply ring; 56. a contact point; 57. a light leakage port; 271. a drive plate; 272. a rubber column; 273. a spring; 274. a linkage plate; 275. a shift block; 276. a telescopic rod; 277. a clamping block; 278. a positioning plate; 279. and a limit groove.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present utility model are included in the protection scope of the present utility model.

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, 2 and 4, the present utility model provides a technical solution:

the utility model provides a multi-leaf collimator for radiotherapy machine, includes mount pad 1, the inner chamber fixedly connected with collimator main part 2 of mount pad 1, one side fixedly connected with top cap 3 of mount pad 1, the illumination mouth 4 has all been seted up to one side of mount pad 1 and top cap 3, the inner wall fixedly connected with dust remover 5 of illumination mouth 4, dust remover 5 is including: the dustproof cover 51, the cathode coil 52, the anode coil 53, the connecting seat 54, the power ring 55, the contact point 56, the light leakage mouth 57, the inner wall fixedly connected with of dustproof cover 51 is a plurality of cathode coils 52, the inner wall fixedly connected with of dustproof cover 51 is a plurality of anode coils 53, and cathode coils 52 and anode coils 53 crisscross the arranging in proper order, one side fixedly connected with connecting seat 54 of dustproof cover 51, the inner wall fixedly connected with power ring 55 of connecting seat 54, one side electric connection of power ring 55 has the contact point 56 that is two in quantity, the one end of contact point 56 is electric connection respectively has cathode coil 52 and anode coil 53, be favorable to avoiding attaching the dust on the blade of multi-leaf collimator, avoid the beam of rays to shine the scope inaccurately.

In this embodiment, referring to fig. 3 and 5, the collimator body 2 includes: blade supporting seat 21, bottom plate 22, curb plate 23, motor 24, actuating lever 25, spread groove 26, install and tear ware 27 open, blade main part 28, the top of blade supporting seat 21 and bottom fixedly connected with curb plate 23 respectively, one side fixedly connected with a plurality of motors 24 of curb plate 23, actuating lever 25 has been cup jointed in the activity of one side of motor 24, the one end fixedly connected with blade main part 28 of actuating lever 25, spread groove 26 has been seted up to the one end of blade main part 28, the inner chamber swing joint of spread groove 26 has install and tear ware 27 open, install and tear ware 27 open including: the transmission plate 271, rubber column 272, spring 273, interlock board 274, telescopic link 276, clamping block 277, locating plate 278, spacing groove 279, one side fixedly connected with rubber column 272 of transmission plate 271, the outside fixedly connected with spring 273 of rubber column 272, one end fixedly connected with interlock board 274 of rubber column 272, one side fixedly connected with telescopic link 276 of interlock board 274, the outside fixedly connected with clamping block 277 of telescopic link 276, the inner chamber fixedly connected with locating plate 278 of spread groove 26, the spacing groove 279 that runs through locating plate 278 has been seted up to one side of locating plate 278, be favorable to taking off the blade of damage alone when the blade of multi-leaf collimator takes place to only need maintain or change to the blade of damage, maintenance degree of difficulty and cost of maintenance have been reduced.

In this embodiment, referring to fig. 1 and 4, the outer side of the connection seat 54 is in transition fit with the inner wall of the irradiation port 4, so as to avoid dust from entering the inner cavity of the mounting seat 1 from the gap between the dust remover 5 and the irradiation port 4.

In this embodiment, referring to fig. 4, a light leakage opening 57 penetrating through the connecting seat 54 is formed on one side of the connecting seat 54, which is beneficial to enabling rays to pass through the dust remover 5 through the light leakage opening 57, so as to avoid the dust remover 5 from affecting the irradiation range of the rays.

In this embodiment, referring to fig. 5, the outer edge of the clamping block 277 is mutually matched with the inner wall of the limiting groove 279, so that the clamping block 277 can pass through the limiting groove 279 after rotating, and the clamping block 277 cannot pass through the limiting groove 279 after rotating again.

In this embodiment, referring to fig. 5, a plurality of deflection blocks 275 are fixedly connected to one outer edge of the driving plate 271 and one outer edge of the linkage plate 274, and the deflection blocks 275 located on one side of the driving plate 271 and the deflection blocks 275 located on one outer edge of the linkage plate 274 are mutually displaced, so that when the linkage plate 274 moves backward to make the deflection blocks 275 located on one side of the linkage plate 274 and the deflection blocks 275 located on one side of the driving plate 271 mutually squeeze, the driving plate 271 slightly rotates.

The working principle of the utility model is as follows:

in the first step, in the utility model, the dust remover 5 is provided with the power supply coil 55, the power supply coil 55 is connected with a power supply to electrify the power supply coil 55, the current is respectively conducted to the cathode coil 52 and the anode coil 53 through the contact points 56 with the number of two, the cathode coil 52 and the anode coil 53 are electrified simultaneously, so that a high-voltage electric field is formed between the cathode coil 52 and the anode coil 53, when dust enters the inner cavity of the dust cover 51, the dust enters the high-voltage electric field, corona discharge occurs through the cathode coil 52, gas is ionized, negatively charged gas ions move towards the cathode coil 52 under the action of the electric field, collide with dust particles in the moving process, the dust particles are negatively charged, move towards the anode coil 53 under the action of the electric field force, and after the dust reaches the anode coil 53, the dust is discharged, the dust is adsorbed on the surface of the anode coil 53, so that most of the dust is removed through the air entering the inner cavity of the mounting seat 1 of the dust remover 5.

Step two, by arranging the mounting and dismounting device 27, the mounting and dismounting device 27 comprises a telescopic rod 276, when the connecting groove 26 needs to be dismounted, the driving rod 25 moves to the depth of the inner cavity of the connecting groove 26 by pressing the blade main body 28, the telescopic rod 276 is extruded by moving the driving rod 25 backwards, the telescopic rod 276 is backwards moved, the linkage plate 274 is backwards moved by moving the telescopic rod 276, the extrusion rubber column 272 and the spring 273 are deformed by moving the linkage plate 274 backwards, the deformation block 275 on the outer edge of one side of the linkage plate 274 and the deformation block 275 on the side of the transmission plate 271 are mutually extruded by moving the linkage plate 274 backwards, the transmission plate 271 is slightly rotated due to mutual extrusion of the deformation block 275 on the side of the linkage plate 274 and the deformation block 275 on the side of the transmission plate 271, the rubber column 272 is rotated by rotating the transmission plate 271, the linkage plate 274 is driven to rotate through the rotation of the rubber column 272, the telescopic rod 276 is driven to rotate through the rotation of the linkage plate 274, the clamping block 277 is driven to rotate through the rotation of the telescopic rod 276, when the clamping block 277 slightly rotates and then passes through the limiting groove 279, the pressing of the blade main body 28 is stopped at the moment, the spring 273 loses pressure to restore the original state, so that the linkage plate 274 moves forwards, the linkage plate 274 and the telescopic rod 276 continue to move forwards because the clamping block 277 can pass through the limiting groove 279, the blade main body 28 is pushed to move backwards through the backward movement of the telescopic rod 276, so that the driving rod 25 is separated from the inner cavity of the connecting groove 26, the blade main body 28 can be detached from the driving rod 25, when the blade main body 28 is installed, the blade main body 28 is pressed again according to the principle, the 227 can rotate again, so that the clamping block 277 cannot pass through the limiting groove 279, thereby mounting the blade body 28 at one end of the driving lever 25.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Multi-leaf collimator for radiotherapy apparatus, comprising a mounting (1), characterized in that: the utility model discloses a collimator, including mount pad, inner chamber fixedly connected with collimator main part (2) of mount pad (1), one side fixedly connected with top cap (3) of mount pad (1), irradiation mouth (4) have all been seted up to one side of mount pad (1) and top cap (3), the inner wall fixedly connected with dust remover (5) of irradiation mouth (4), dust remover (5) are including: the anti-dust device comprises a dustproof cover (51), cathode coils (52), anode coils (53), a connecting seat (54), a power supply ring (55), contact points (56) and light leakage ports (57), wherein the cathode coils (52) are fixedly connected to the inner wall of the dustproof cover (51), the anode coils (53) are fixedly connected to the inner wall of the dustproof cover (51), the anode coils (52) and the anode coils (53) are alternately and sequentially arranged, one side of the dustproof cover (51) is fixedly connected with the connecting seat (54), the power supply ring (55) is fixedly connected to the inner wall of the connecting seat (54), the contact points (56) with two numbers are electrically connected to one side of the power supply ring (55), and one end of each contact point (56) is electrically connected with the cathode coils (52) and the anode coils (53) respectively.

2. A multi-leaf collimator for a radiation therapy machine according to claim 1, wherein: the collimator body (2) comprises: blade supporting seat (21), bottom plate (22), curb plate (23), motor (24), actuating lever (25), spread groove (26), install and remove ware (27), blade main part (28), the top and the bottom of blade supporting seat (21) are fixedly connected with curb plate (23) respectively, one side fixedly connected with motor (24) of a plurality of quantity of curb plate (23), actuating lever (25) have been cup jointed in the activity of one side of motor (24), the one end fixedly connected with blade main part (28) of actuating lever (25), spread groove (26) have been seted up to the one end of blade main part (28), the inner chamber swing joint of spread groove (26) has install and remove ware (27), install and remove ware (27) including: drive plate (271), rubber post (272), spring (273), interlock board (274), telescopic link (276), screens piece (277), locating plate (278), spacing groove (279), one side fixedly connected with rubber post (272) of drive plate (271), the outside fixedly connected with spring (273) of rubber post (272), one end fixedly connected with interlock board (274) of rubber post (272), one side fixedly connected with telescopic link (276) of interlock board (274), the outside fixedly connected with screens piece (277) of telescopic link (276), inner chamber fixedly connected with locating plate (278) of spread groove (26), spacing groove (279) that runs through locating plate (278) have been seted up to one side of locating plate (278).

3. A multi-leaf collimator for a radiation therapy machine according to claim 1, wherein: the outer side of the connecting seat (54) is in transition fit with the inner wall of the irradiation port (4).

4. A multi-leaf collimator for a radiation therapy machine according to claim 1, wherein: one side of the connecting seat (54) is provided with a light leakage port (57) penetrating through the connecting seat (54).

5. A multi-leaf collimator for a radiation therapy machine according to claim 2, wherein: the outer edge of the clamping block (277) is mutually matched with the inner wall of the limiting groove (279).

6. A multi-leaf collimator for a radiation therapy machine according to claim 2, wherein: the outer edge of one side of the transmission plate (271) and the outer edge of one side of the linkage plate (274) are fixedly connected with a plurality of deflection blocks (275), and the deflection blocks (275) positioned on one side of the transmission plate (271) are mutually staggered with the deflection blocks (275) positioned on the outer edge of one side of the linkage plate (274).