CN211097109U

CN211097109U - Radiation accelerator treatment head and tumor radiotherapy equipment

Info

Publication number: CN211097109U
Application number: CN201921987780.8U
Authority: CN
Inventors: 车永新; 纪东泽; 成希革; 任旗; 刘文锋; 梁海鹏
Original assignee: Shinva Medical Instrument Co Ltd
Current assignee: Shinva Medical Instrument Co Ltd
Priority date: 2019-11-15
Filing date: 2019-11-15
Publication date: 2020-07-28
Anticipated expiration: 2029-11-15

Abstract

The utility model discloses a ray accelerator treatment head, including the accelerating tube of vertical setting, install in the elementary collimation awl of accelerating tube lower extreme and be located the multi-leaf collimator of elementary collimation awl below, elementary collimation awl below is installed and is removed gear bracket and gear switching driver, is provided with a plurality of ray gears on removing the gear bracket, and gear switching driver can drive and remove the gear bracket and remove, makes the different ray gears aim at elementary collimation awl to switch treatment mode. The gear shifting driver drives the movable gear bracket to move, so that ray gear shifting is realized, limitation of a radio field range and switching of multiple treatment modes can be realized in a limited space, multiple treatment modes integrated with equipment are enabled, gear shifting is convenient and fast, the applicability of the equipment is improved, and fast, safe and accurate clinical requirements can be met. The utility model discloses still disclose the tumour radiotherapy equipment of including above-mentioned ray accelerator treatment head.

Description

Radiation accelerator treatment head and tumor radiotherapy equipment

Technical Field

The utility model relates to the field of medical equipment, especially, relate to a ray accelerator treatment head. In addition, the utility model discloses still relate to a tumor radiotherapy equipment including above-mentioned ray accelerator treatment head.

Background

The tumor radiotherapy equipment treats tumors through high-energy rays, has the advantages of high efficiency and accuracy, and the main component of the tumor radiotherapy equipment is a radiation accelerator treatment head which accelerates electrons to output high-energy rays through an accelerator to irradiate the high-energy rays at the tumor position for treatment. Meanwhile, radiation also affects the body, and in order to prevent radiation leakage, it is necessary to provide a device such as a collimating cone or a multi-leaf collimator to form an irradiation hole matching the shape of the tumor, and the radiation passes through the irradiation hole and then irradiates the tumor, thereby preventing the radiation from irradiating positions other than the tumor.

The tumor radiotherapy technology development trend is precise radiotherapy, fast, safe and precise radiotherapy is pursued, a single treatment mode is adopted in the prior art, a beam is a non-uniform mode, but a conventional uniform irradiation mode cannot be provided, and the irradiation effect of a large-size radiation field is poor, so that the application range is limited. The limitation of the range of the radiation field and the switching of a plurality of treatment modes can not be realized in a limited space.

Therefore, how to provide a radiation accelerator treatment head capable of realizing the definition of the range of the radiation field and the switching of a plurality of treatment modes in a limited space is a technical problem which needs to be solved by those skilled in the art at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a ray accelerator treatment head realizes through removing the gear bracket that the ray gear switches, can realize the injecing of the wild scope of shooting and the switching of multiple treatment pattern in finite space, improve equipment suitability. Another object of the present invention is to provide a tumor radiotherapy apparatus comprising the above-mentioned radiation accelerator treatment head.

In order to solve the technical problem, the utility model provides a ray accelerator treatment head, including the accelerating tube of vertical setting, install in the elementary collimation cone of accelerating tube lower extreme with be located the multi-leaf collimator of elementary collimation cone below, elementary collimation cone installs below and removes gear bracket and gear switching drive ware, it is provided with a plurality of ray gears on the gear bracket to remove, gear switching drive ware can drive it removes to remove the gear bracket, makes the difference the ray gear is aimed at elementary collimation cone to switch treatment mode.

Preferably, the movable gear bracket is provided with non-uniform gears and uniform gears in parallel along the horizontal direction, the non-uniform gears are vertical through holes and used for outputting non-uniform high dose rate mode rays, the uniform gears are vertical through holes, the uniform gears are provided with uniform devices and used for outputting uniform common mode rays, and the gear switching driver can drive the movable gear bracket to move horizontally.

Preferably, a vertical conical hole is formed in the middle of the primary collimating cone, the diameter of the conical hole is gradually increased from top to bottom, and the vertical through holes at the non-equalizing gear and the equalizing gear are conical holes for expanding the conical hole.

Preferably, the periphery of the accelerating tube is sleeved with a plurality of layers of stacked lead protection.

Preferably, a rotation driver is further included for driving the acceleration tube to rotate along the beam center.

Preferably, a secondary collimation cone is installed between the primary collimation cone and the multi-leaf collimator, and the secondary collimation cone further comprises a reflector, a field lamp and an analog switching driver, wherein the analog switching driver can drive the reflector to move to a preset position, so that the light beam of the field lamp is reflected by the reflector and passes through the multi-leaf collimator to the plane of a patient.

Preferably, the second-stage collimating cone includes a fixed second-stage collimating cone and a movable second-stage collimating cone, the fixed second-stage collimating cone is installed below the primary collimating cone, the movable second-stage collimating cone is installed below the fixed second-stage collimating cone, and the analog switching driver is capable of synchronously moving the movable second-stage collimating cone and the reflective mirror so that the movable second-stage collimating cone is aligned with the fixed second-stage collimating cone or the reflective mirror is moved to a preset position.

Preferably, the multi-leaf collimator comprises upper leaves and lower leaves, the number of the lower leaves is greater than that of the upper leaves, and the front end edges of the side faces of each upper leaf and each lower leaf are provided with right-angle chamfers.

Preferably, a fixing seat and an angle adjusting device are installed below the field lamp.

The utility model provides a tumor radiotherapy equipment, including the ray accelerator treatment head, the ray accelerator treatment head specifically is above-mentioned arbitrary one the ray accelerator treatment head.

The utility model provides a ray accelerator treatment head, including the accelerating tube of vertical setting, install in the elementary collimation awl of accelerating tube lower extreme and be located the multi-leaf collimator of elementary collimation awl below, elementary collimation awl below is installed and is removed gear bracket and gear switching driver, is provided with a plurality of ray gears on removing the gear bracket, and gear switching driver can drive and remove the gear bracket and remove, makes the different ray gears aim at elementary collimation awl to switch treatment mode. The gear shifting driver drives the movable gear bracket to move, so that ray gear shifting is realized, limitation of a radio field range and switching of multiple treatment modes can be realized in a limited space, multiple treatment modes integrated with equipment are enabled, gear shifting is convenient and fast, the applicability of the equipment is improved, and fast, safe and accurate clinical requirements can be met.

The utility model discloses still provide a tumour radiotherapy equipment including above-mentioned ray accelerator treatment head, because above-mentioned ray accelerator treatment head has above-mentioned technological effect, above-mentioned tumour radiotherapy equipment also should have same technological effect, no longer introduces in detail here.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a treatment head of a radiation accelerator provided by the present invention;

fig. 2 is a schematic diagram of non-uniform gears of an embodiment of a treatment head of a radiation accelerator according to the present invention;

fig. 3 is a schematic view of an equalizing gear of an embodiment of a therapeutic head of a radiation accelerator according to the present invention;

fig. 4 is a schematic diagram of a working beam of an embodiment of a treatment head of a radiation accelerator according to the present invention;

fig. 5 is a schematic diagram of a simulated beam of an embodiment of a treatment head of a radiation accelerator according to the present invention.

Detailed Description

The core of the utility model is to provide a ray accelerator treatment head realizes through removing the gear bracket that the ray gear switches, can realize the injecing of the wild scope of shooting and the switching of multiple treatment pattern in finite space, improve equipment suitability. The other core of the utility model is to provide a tumor radiotherapy device comprising the above-mentioned radiation accelerator treatment head.

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

Referring to fig. 1 to 5, fig. 1 is a schematic structural diagram of a therapeutic head of a radiation accelerator according to an embodiment of the present invention; fig. 2 is a schematic diagram of non-uniform gears of an embodiment of a treatment head of a radiation accelerator according to the present invention; fig. 3 is a schematic view of an equalizing gear of an embodiment of a therapeutic head of a radiation accelerator according to the present invention; fig. 4 is a schematic diagram of a working beam of an embodiment of a treatment head of a radiation accelerator according to the present invention; fig. 5 is a schematic diagram of a simulated beam of an embodiment of a treatment head of a radiation accelerator according to the present invention.

The utility model provides a beam accelerator treatment head, including accelerating tube 1, elementary collimation awl 2, many leaf collimators 3, remove gear bracket 6 and gear switching drive 6-3, 1 vertical setting of accelerating tube for with the electron with higher speed and target output high energy ray, elementary collimation awl 2 is installed in 1 lower extreme of accelerating tube, inject the high energy beam in certain within range, many leaf collimators 3 are located 2 below elementary collimation awl, it is moulding to penetrate the beam, make the beam shape unanimous basically with the tumour shape in patient's plane, shine the tumour. The movable gear bracket 6 is arranged below the primary collimating cone 2 and connected with the gear switching driver 6-3, a plurality of ray gears are arranged on the movable gear bracket 6, and the gear switching driver 6-3 drives the movable gear bracket 6 to move, so that different ray gears are aligned with the primary collimating cone 2 to switch treatment modes.

Move gear bracket 6 through the drive of gear switching driver 6-3 and remove, and then realize the ray gear and switch, make the ray that accelerating tube 1 sent shine downwards through different gears, can form the ray of different grade types, correspond different treatment modes, can realize the injecing of field scope and the switching of multiple treatment mode in the finite space, make the integrated multiple treatment mode of equipment, and the gear switches convenient and fast, improve equipment suitability, can satisfy swift, safe, accurate clinical demand.

The utility model provides an among the ray accelerator treatment head that embodiment mode provided, be provided with uneven gear 6-1 and even gear 6-2 on the removal gear bracket 6, two gears set up side by side along the horizontal direction, uneven gear 6-1 is vertical through-hole, the back is directly passed through to the beam, output uneven high dose rate mode ray, be used for uneven treatment mode, even gear 6-2 is provided with the equalizer in the vertical through-hole, the beam can be handled through the equalizer, output even ordinary mode ray, be used for equal positive treatment mode, improve the jumbo size and penetrate wild effect of shining. A greater number of different gears can be added to provide different types of beams, further improving the applicability of the device.

Because the two radial gears are horizontally arranged, the gear shifting driver 6-3 drives the gear shifting bracket 6 to horizontally move, and thus gear shifting can be realized. The movable gear bracket 6 is a horizontal bracket, two gears are arranged in the middle of the horizontal bracket in parallel, and the gear switching driver 6-3 can be a motor and is arranged at one end of the horizontal bracket, and other types of drivers and the like can also be adopted.

In order to ensure the normal irradiation of the beam, the middle part of the primary collimation cone 2 is provided with a vertical conical hole, and the diameter of the conical hole is gradually increased from top to bottom, namely, the primary collimation cone 2 is made of a hollow high-density material, the hollow shape is conical, and the size of the conical degree limits the maximum beam area reaching the plane of a patient. Meanwhile, the vertical through holes at the non-uniform gear 6-1 and the uniform gear 6-2 are tapered holes of expanding tapered holes, namely after the gears are aligned with the primary collimating cone 2, the tapered holes at the gears expand the tapered holes of the primary collimating cone 2 to form larger tapered holes.

The periphery of the accelerating tube 1 is sleeved with a lead protection 4 with multiple layers stacked, so that ray leakage is prevented. The tumor conformal irradiation device is also provided with a rotation driver for driving the accelerating tube 1 to rotate along the center of the beam, the rotation angle is selected within the range of 0-360 degrees according to design requirements, and the tumor conformal irradiation can be performed from more angles through rotation, so that the conformal degree is improved.

On the basis of the treatment head of the radiation accelerator provided by each embodiment, a secondary collimation cone 5 is further installed between the primary collimation cone 2 and the multi-leaf collimator 3, and is provided with a reflector 7, a field lamp 8 and an analog switching driver 9 in a matching way, and a conical hole is also arranged on the secondary collimation cone 5, so that a complete beam limiting cone is formed by the secondary collimation cone 5, the primary collimation cone 2 and holes on gears.

A fixed seat and an angle adjusting device are arranged below the field projecting lamp 8, the angles of the reflective mirror 7 and the field projecting lamp 8 are preset, and after the reflective mirror 7 is moved to a preset position by the analog switching driver 9, the light beam of the field projecting lamp 8 is reflected by the reflective mirror 7 and passes through the multi-leaf collimator 3 to reach the plane of a patient. When the shape of the beam needs to be checked, the reflector 7 is driven by the simulation switching driver 9 to move to a proper position, the light beam of the field lamp 8 is reflected and then projected on the multi-leaf collimator 3, the light rays which are not shielded pass through the multi-leaf collimator 3, the tumor shape is formed on the plane of the patient, namely, the irradiated part and shape can be visually seen through light beam simulation during positioning, the light beam simulation is carried out, and the reflector 7 is moved to return to the original position after the simulation is completed. The analog switching driver 9 may be a motor or another type of driver.

In order to improve the anti-leakage effect, the secondary collimating cone 5 comprises a fixed secondary collimating cone 5-1 and a movable secondary collimating cone 5-2, the fixed secondary collimating cone 5-1 is installed below the primary collimating cone 2, the movable secondary collimating cone 5-2 is installed below the fixed secondary collimating cone 5-1, the analog switching driver 9 can synchronously move the movable secondary collimating cone 5-2 and the reflective mirror 7, namely, the two are controlled to be exchanged, the reflective mirror 7 is moved to a preset position, the field lamp 8 is matched with the plane of a patient to simulate the beam shape, or the movable secondary collimating cone 5-2 is aligned with the fixed secondary collimating cone 5-1, after the reflective mirror 7 is moved away, the originally separated secondary collimating cones 5 are combined into a whole, the leakage radiation can be effectively reduced, the secondary collimating cone 5 and the movable reflective mirror 7 are integrated together, in a limited space, the simulation of using the optical field to the beam and the function of effectively reducing the leakage radiation are satisfied.

In the treatment head of the radiation accelerator provided by the embodiment of the present invention, the multi-leaf collimator 3 includes the upper leaf 3-1 and the lower leaf 3-2, the number of the lower leaf 3-2 is greater than the number of the upper leaf 3-1, and the front end edge of the side of each upper leaf 3-1 and each lower leaf 3-2 is provided with a right angle chamfer. The front end edge of each blade side is provided with a right-angle chamfer. Each vane can stop at any position in the motion range, and the stop positions of the vanes are combined to form different holes, one or more, through which the beam passes, so that the dose distribution with the same shape as the holes and changing according to fixed proportion can be formed on the plane of the patient.

In the treatment process, each driver drive blade motion forms the hole of shining that matches with the tumour shape, and the ray throws on the tumour through shining behind the hole, through setting up multilayer structure to set up right angle chamfer at blade side front end, compare in current right angle terminal surface, effectively press close to the tumour edge more, thereby realize better shape-adapted effect of penetrating the wild, thereby improve shape-adapted resolution ratio of penetrating the wild, reduce the ray radiation and leak, improve and penetrate wild conversion efficiency.

The arrangement of two layers, the gaps of the adjacent upper layer blades 3-1 and the gaps of the adjacent lower layer blades 3-2 are staggered, and the structure is such that the beam passing through the gaps of the upper layer blades 3-1 must pass through the whole height of the lower layer blades 3-2 to reach the patient plane, which greatly reduces the dose leaked to the patient plane. The upper layer blade 3-1 shields the lower layer blade 3-2 through automatic following, so that rays caused by gaps between the lower layer blades are prevented from being directly leaked out, the conformity degree of the hole and the tumor can be further improved, and the width of a single blade is half. Specifically, the number of the lower-layer blades 3-2 is larger than that of the upper-layer blades 3-1, radiation leakage is effectively reduced, a moving gap of 0.1mm to 0.2mm is arranged between every two adjacent blades, the width of the chamfer is one fourth of the width of the blade, conventional rectangular and square fields can still be formed by combining the two layers of blades, and the influence of the chamfer is avoided. The size and the arrangement mode of each part can be adjusted according to the condition, and the utility model discloses a within the scope of protection.

In addition to the above-mentioned radiation accelerator treatment head, the present invention also provides a tumor radiotherapy device including the above-mentioned radiation accelerator treatment head, and the structure of other parts of the tumor radiotherapy device is referred to the prior art, which is not repeated herein.

The above details are provided for the treatment head of the radiation accelerator and the tumor radiotherapy equipment. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A ray accelerator treatment head comprises an accelerating tube (1) which is vertically arranged, a primary collimation cone (2) which is arranged at the lower end of the accelerating tube (1) and a multi-blade collimator (3) which is positioned below the primary collimation cone (2), and is characterized in that a moving gear bracket (6) and a gear switching driver (6-3) are arranged below the primary collimation cone (2), a plurality of ray gears are arranged on the moving gear bracket (6), and the gear switching driver (6-3) can drive the moving gear bracket (6) to move so that different ray gears are aligned with the primary collimation cone (2) to switch treatment modes.

2. The radiation accelerator treatment head according to claim 1, wherein the mobile gear bracket (6) is provided with a non-uniform gear (6-1) and a uniform gear (6-2) in parallel along a horizontal direction, the non-uniform gear (6-1) is a vertical through hole for outputting non-uniform high dose rate mode radiation, the uniform gear (6-2) is a vertical through hole provided with a uniform device for outputting uniform normal mode radiation, and the gear switching driver (6-3) can drive the mobile gear bracket (6) to move horizontally.

3. The accelerator tip of claim 2, wherein the primary collimating cone (2) has a vertical conical hole in the middle, the diameter of the conical hole gradually increases from top to bottom, and the vertical through holes at the non-uniform gear (6-1) and the uniform gear (6-2) are conical holes for expanding the conical hole.

4. The accelerator treatment head according to claim 1, wherein the accelerating tube (1) is peripherally sleeved with a multi-layer stacked lead shield (4).

5. The accelerator treatment head according to claim 1, further comprising a rotation drive for driving the acceleration tube (1) to rotate along the beam center.

6. Accelerator treatment head according to any one of claims 1 to 5, characterized by a secondary collimation cone (5) mounted between the primary collimation cone (2) and the multi-leaf collimator (3), further comprising a mirror (7), a field lamp (8) and an analog switching driver (9), the analog switching driver (9) being able to drive the mirror (7) to move to a preset position, so that the beam of the field lamp (8) is reflected by the mirror (7) and passes through the multi-leaf collimator (3) to the patient plane.

7. The accelerator treatment head according to claim 6, wherein the secondary collimation cone (5) comprises a fixed secondary collimation cone (5-1) and a moving secondary collimation cone (5-2), the fixed secondary collimation cone (5-1) being mounted below the primary collimation cone (2), the moving secondary collimation cone (5-2) being mounted below the fixed secondary collimation cone (5-1), the analog switching actuator (9) being capable of synchronously moving the moving secondary collimation cone (5-2) and the mirror (7) to align the moving secondary collimation cone (5-2) with the fixed secondary collimation cone (5-1) or to move the mirror (7) to a preset position.

8. The accelerator tip of claim 7, wherein the multi-leaf collimator (3) comprises an upper leaf (3-1) and a lower leaf (3-2), the number of the lower leaf (3-2) is greater than the number of the upper leaf (3-1), and the front end edges of the side faces of each of the upper leaf (3-1) and the lower leaf (3-2) are provided with right-angled chamfers.

9. The accelerator tip of claim 8, wherein a fixed seat and an angle adjusting device are installed below the field lamp (8).

10. A tumor radiotherapy apparatus comprising a radiation accelerator treatment head, characterized in that the radiation accelerator treatment head is embodied as a radiation accelerator treatment head according to any one of claims 1 to 9.