CN216022721U

CN216022721U - Radiotherapy apparatus

Info

Publication number: CN216022721U
Application number: CN202121459926.9U
Authority: CN
Inventors: 郭召
Original assignee: Our United Corp
Current assignee: Our United Corp
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2022-03-15
Anticipated expiration: 2031-06-29

Abstract

The utility model provides radiotherapy equipment, and relates to the technical field of medical equipment. The radiotherapy equipment comprises a machine frame and a treatment head. The interior of the frame forms a treatment space. The treatment head is movably arranged on the frame, the treatment head is configured to project beam current along a first straight line, the treatment head is further configured to rotate by taking a second straight line as an axis, and the first straight line and the second straight line are arranged at an included angle. The treatment head is also configured to oscillate relative to the gantry along a predetermined path while rotating, the predetermined path forming an arc centered about the isocenter. The radiotherapy equipment provided by the utility model has flexible incident angle, ensures high dosage of the target point, reduces the dosage born by normal tissues around the target point and improves the comprehensive treatment precision.

Description

Radiotherapy apparatus

Technical Field

The utility model relates to the technical field of medical equipment, in particular to radiotherapy equipment.

Background

Radiotherapy is a main means for curing cancer, and the existing radiotherapy equipment mainly comprises medical linear accelerators, gamma knives, proton accelerators and the like.

The medical linear accelerator mainly uses a conformal intensity modulation mode for radiation therapy. The gamma knife is mainly used for treatment in a three-dimensional orientation mode. The accelerator usually has large energy and high focus dose rate, is mainly used for body treatment and has high treatment efficiency. The gamma knife adopts a multi-source three-dimensional focusing mode for irradiation, the gamma knife has low energy and low focus dose rate, is used for treating head tumors, a body gamma knife treatment system is developed in recent years, and the treatment efficiency is lower than that of an accelerator system on the whole.

In the prior art, when the radiotherapy equipment is used for treatment, the dosage borne by normal tissues around a target point is increased, so that the problem of larger side effect is caused.

SUMMERY OF THE UTILITY MODEL

The objects of the present invention include, for example, providing a radiotherapy apparatus that reduces the dose to which normal tissue surrounding a target site is exposed, reducing side effects.

Embodiments of the utility model may be implemented as follows:

the embodiment of the utility model provides radiotherapy equipment, which comprises a rack and a treatment head;

a treatment space is formed inside the frame;

the treatment head is movably arranged on the frame, is configured to project beam current along a first straight line, and is also configured to rotate by taking a second straight line as an axis, and the first straight line and the second straight line form an included angle;

the treatment head is also configured to swing relative to the frame along a preset path while rotating, and the preset path forms an arc line with the isocenter as a circle center.

Compared with the prior art, the radiotherapy equipment provided by the utility model has the beneficial effects that:

when the radiotherapy equipment carries out radiotherapy on a patient, the treatment head projects beam current along a first straight line, and can also rotate relative to the rack along a second straight line; the first straight line and the second straight line are arranged in an included angle, so that the beam projected by the treatment head can provide treatment effect to the target point from different directions of the target point, the dosage born by normal tissues around the target point can be reduced, and the side effect generated by treatment is reduced.

In one embodiment, the radiotherapy equipment further comprises a swinging device, and the treatment head is arranged on the rack through the swinging device;

the swinging device is configured to drive the treatment head to swing along the preset path relative to the machine frame.

The treatment head can also swing along a preset path relative to the frame, so that the treatment head can move to different positions of a patient to project beam current from different positions of the patient to a target point, and the incident flexibility of the treatment head can be improved. Therefore, the radiotherapy equipment can realize flexible incident angle, ensure high dosage of the target point, reduce the dosage born by normal tissues around the target point and improve the comprehensive treatment precision.

In one embodiment, the swing device includes: the first guide rail is arc-shaped with an isocenter as a circle center;

the treatment head is connected with the first guide rail, and the treatment head swings on the first guide rail along the preset path.

In one embodiment, the swing device further includes: slider component and swing main part, the swing main part pass through slider component with first guide rail is connected, the treatment head rotationally sets up on the swing main part.

In one embodiment, the radiotherapy apparatus further comprises a rotating body, the swinging body is provided with a through hole for the rotating body to be mounted, the rotating body is rotatably matched with the swinging body, and the treatment head is arranged on the rotating body so as to rotate in a second straight line.

In one embodiment, the radiotherapy equipment further comprises a cooling structure, wherein the cooling structure is arranged on the rotating body, is in rotating fit with the rotating body and is fixed relative to the swinging body; the cooling structure is configured to direct a cooling fluid through the treatment head.

In one embodiment, the cooling structure comprises a fixed part and a rotating part; the rotating part is rotatably arranged in the fixed part and is connected with the rotating body; a first liquid inlet pipeline and a first liquid outlet pipeline are arranged on the fixing part, and one ends of the first liquid inlet pipeline and the first liquid outlet pipeline are connected with an external temperature control box pipeline; cooling pipelines are arranged in the rotating part, the rotating main body and the treatment head; the other ends of the first liquid inlet pipeline and the first liquid outlet pipeline are respectively connected with a cooling pipeline.

In one embodiment, the first liquid inlet pipeline comprises a liquid inlet and a liquid inlet cavity, and the first liquid outlet pipeline comprises a liquid outlet and a liquid outlet cavity; the liquid inlet cavity and the liquid outlet cavity are axially and annularly arranged on the inner side of the fixing part, and are spaced; the liquid inlet and the liquid outlet are both arranged at the outer side of the fixing part, the liquid inlet is communicated with the liquid inlet cavity, and the liquid outlet is communicated with the liquid outlet cavity;

the rotating part comprises: the second liquid inlet pipeline and the second liquid outlet pipeline are provided with openings at the outer side of the rotating part; one end of the second liquid inlet pipeline is connected with the first liquid inlet pipeline through the opening, and the other end of the second liquid inlet pipeline is connected with the rotating main body and a cooling pipeline arranged in the treatment head; one end of the second liquid outlet pipeline is connected with the first liquid outlet pipeline through the opening, and the other end of the second liquid outlet pipeline is connected with the rotating main body and a cooling pipeline arranged in the treatment head.

In one embodiment, the radiotherapy equipment further comprises a slip ring and a carbon brush, wherein the slip ring is arranged on the outer circumferential direction of the rotating main body, and the carbon brush is fixed on the swinging main body and is abutted against the slip ring; the slip ring is electrically connected with the treatment head.

In one embodiment, the radiotherapy apparatus further comprises a treatment couch and a second rail; the second guide rail is arranged below the treatment head and is circular; the treatment couch is in sliding fit with the second guide rail so that the treatment couch moves in the treatment space.

In one embodiment, the treatment head comprises a radiation generating device and a collimator;

the rotating body is provided with a mounting hole for mounting the ray generating device and the collimator; the ray generating device is arranged at the position of a mounting hole on the upper end face of the rotating main body and is configured to emit beam current along a first straight line, and the first straight line has a preset included angle in the vertical direction;

the collimator is arranged at a mounting hole position of the lower end face of the rotating body, the collimator is provided with a plurality of collimation channels, and the collimator is configured to rotate relative to the ray generating device so that one of the collimation channels corresponds to a beam outlet of the ray generating device, and the beam current passes through the collimation channels.

In one embodiment, the collimator includes a rotation shaft and a collimating part; the collimation part is sleeved on the rotating shaft and is in rotating fit with the rotating shaft; the rotating shaft is fixedly connected with the rotating main body; the collimating part is provided with a plurality of collimating channels with different apertures.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a radiotherapy apparatus provided in an embodiment of the present application;

figure 2 is a schematic diagram of an exploded view of a radiotherapy apparatus provided in an embodiment of the present application;

figure 3 is a schematic diagram of another exploded structure of a radiotherapy apparatus provided in an embodiment of the present application;

figure 4 is a cross-sectional structural schematic view of an adapter provided in an embodiment of the present application;

fig. 5 is a schematic cross-sectional structural diagram of a collimator provided in an embodiment of the present application.

Icon: 10-a radiotherapy apparatus; 100-a frame; 101-a treatment space; 110-upright post; 111-a mounting plate; 120-a substrate; 200-treatment head; 210-a radiation generating device; 220-a collimator; 221-a rotating shaft; 222-a collimating part; 223-collimating channel; 300-a swing device; 310-a first guide rail; 320-a slider assembly; 321-a first slider; 322-a second slider; 330-a swinging body; 331-a through hole; 410-a rotating body; 412-slip rings; 4121-carbon brush; 420-a cooling structure; 421-a fixation section; 422-a rotating part; 431-a first inlet conduit; 4311-liquid inlet; 4312-liquid inlet chamber; 432-a first liquid outlet pipe; 4321-liquid outlet; 4322-liquid outlet chamber; 433-a cooling pipeline; 4331-a second liquid inlet pipeline; 4332-second liquid outlet pipe; 500-treatment couch; 501-a second guide rail; 510-bed body; 520-bed panel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. 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.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, it is only for convenience of describing the present invention and simplifying the description, but it is not necessary to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation and be operated, and thus, it should not be construed as limiting the present invention.

Furthermore, the appearances of the terms "first," "second," and the like, if any, are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.

Referring to figure 1, in an embodiment of the present application, a radiotherapy apparatus 10 is provided, the radiotherapy apparatus 10 being configurable to provide a radiotherapy treatment to a patient having a tumor. In the treatment process, the patient can lie in a designated position, the tumor of the patient is taken as a target point, and the radiotherapy equipment 10 can project beam current to the target point so as to provide radiotherapy effect to the tumor through the beam current, thereby achieving the purpose of treating the patient. The radiotherapy equipment 10 can realize flexible incident angle, ensure high dosage of the target spot, reduce dosage born by normal tissues around the target spot and improve comprehensive treatment precision.

Referring to fig. 1 and 2, the radiotherapy apparatus 10 includes a frame 100 and a treatment head 200. The interior of the gantry 100 forms a treatment space 101, and during treatment of a patient, the patient can be moved into the treatment space 101 to facilitate the beam current projected to the patient by the treatment head 200. The treatment head 200 is movably installed on the frame 100, and the treatment head 200 is configured to project a beam along a first straight line, and the treatment head 200 is further configured to rotate around a second straight line as an axis, wherein the first straight line and the second straight line form an included angle. In addition, the treatment head 200 is configured to swing relative to the gantry 100 along a predetermined path while rotating, the predetermined path forming an arc centered at the isocenter.

In the embodiment of the present application, the therapy head 200 is a linear accelerator type therapy head 200, and since the energy generated by the linear accelerator is generally greater than the energy generated by the gamma knife, the therapy head 200 uses the linear accelerator, which can improve the dosage rate of the focus, reduce the therapy time, and enhance the user experience. It is understood that in the embodiment of the present application, the therapy head 200 may also employ a gamma knife or a proton accelerator.

In the present embodiment, the treatment head 200 is swung along a predetermined path with respect to the frame 100, and may be driven in the form of a rail, a chain, or a driving shaft.

It should be noted that, in the case where the radiotherapy apparatus 10 is placed normally (normally, the treatment head 200 is in a horizontal state), the first straight line may be represented as a straight line forming an angle with the vertical direction, and the second straight line may be represented as a straight line in the vertical direction. Based on this, under the condition that the treatment head 200 rotates in the second straight line, the beam current emitted by the treatment head 200 can be projected towards the target point from multiple directions around the target point, so that the dose can be uniformly shared by the tissues around the target point, and the dose borne by the normal tissues around the target point is reduced. Alternatively, the angle formed between the first line and the second line may be 0-45 °, for example, the included angle between the first line and the second line may be 5 °, 10 °, 15 °, 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, or the like.

It should be noted that, since the treatment head 200 emits the beam along the first line, the direction of the accelerating tube is also located on the first line; the second straight line is disposed at an angle to the first straight line, so that the second straight line forms an angle with the orientation of the therapy head 200, in other words, the second straight line does not pass through the axis of the accelerating tube.

It should be noted that, the first straight line and the second straight line are arranged to intersect, and a point where the first straight line and the second straight line intersect may be regarded as an isocenter. In the case where the treatment head 200 projects a beam, the beam passes through the isocenter; in addition, in the process that the therapeutic head 200 rotates relative to the frame 100 with the second straight line as the axis, the beam also continuously passes through the isocenter, so that the isocenter can be overlapped with the target point, and the beam can be continuously projected to the target point in the rotating process. Therefore, the treatment head 200 can project beam current to the target point from different directions of the target point, and can evenly share the dose of the treatment beam current through normal tissues around the target point, so that the dose born by other normal tissues around the target point can be reduced. In addition, the treatment head 200 can also swing along a preset path relative to the machine frame 100, so that the treatment head 200 can project beam current towards the patient from different directions of the patient, and the incident angle of the radiotherapy device 10 can be flexible. Therefore, the radiotherapy equipment 10 can realize flexible incident angle, ensure high dosage of the target point and reduce the dosage born by normal tissues around the target point, thereby improving the comprehensive treatment precision.

In one embodiment, in order to facilitate the swinging of the treatment head 200 relative to the gantry 100, in some embodiments of the present application, the radiotherapy apparatus 10 further comprises a swinging device 300, the treatment head 200 is disposed on the gantry 100 through the swinging device 300, and the treatment head 200 rotates on the second straight line as the axis relative to the swinging device 300. The swing device 300 is configured to swing the treatment head 200 along a predetermined path with respect to the frame 100. Wherein a bearing effect can be provided to the treatment head 200 by the oscillating device 300, whereby the oscillation of the treatment head 200 can be achieved by the oscillation of the oscillating device 300 relative to the gantry 100.

The path of the treatment head 200 swinging around the isocenter is an arc, and a plane formed by a circle on which the arc is located is substantially perpendicular to the horizontal plane, in other words, the treatment head 200 can slide on the arc path in the vertical direction. Of course, in some embodiments, the swing arc of the treatment head 200 is less than 180 degrees, that is, with the horizontal state of the treatment head 200 being 0 degree, the swing range of the treatment head 200 can be 90 degrees, which is clockwise from 0 degree; starting at 0 degrees, the swing arm swings 90 degrees counterclockwise. Thereby, the treatment head 200 is always directed downward. Alternatively, the swing arc of treatment head 200 may take values of-75 °, -45 °, 35 °, 65 °, and so on. The embodiment is merely an example, and the swing angle is not specifically limited.

In one embodiment, referring to fig. 2 and 3, the swing device 300 may include a first guide rail 310, and the first guide rail 310 has an arc shape with an isocenter as a center. The treatment head 200 is connected to the first guide 310, and the treatment head 200 swings on the first guide 310 along a predetermined path. The treatment head 200 can be swung relative to the frame 100 by moving the treatment head 200 along the first guide rail 310. It should be noted that the preset path is a path formed by the first guide rail 310, so that the treatment head 200 can swing along the preset path when the treatment head 200 slides along the first guide rail 310, and therefore, the beam projected by the treatment head 200 is maintained in a state of passing through the isocenter during the process of swinging the treatment head 200 relative to the gantry 100. In this case, the beam current can be accurately projected to the target point only by coinciding the target point with the isocenter, and thus, the incident angle of the treatment head 200 can be adjusted by moving the treatment head 200 relative to the gantry 100. In other words, the radiotherapy apparatus 10 can not only project beam current from different angles toward a target point, but also improve the treatment efficiency.

In one embodiment, in order to facilitate the installation of the treatment head 200, the swing device 300 may further include a slider assembly 320 and a swing body 330, the swing body 330 is connected with the first guide rail 310 through the slider assembly 320, and the treatment head 200 is rotatably disposed on the swing body 330. Wherein, the sliding block assembly 320 can slide along the first guiding rail 310, thereby making the swinging body 330 swing relative to the frame 100, and thus the therapy head 200 is driven to swing relative to the frame 100 by the swinging body 330. It should be noted that during the process of swinging the swinging body 330 relative to the frame 100, the therapy head 200 can rotate relative to the swinging body 330 at the same time, wherein it is noted that during the swinging process of the swinging body 330, the second straight line swings following the swinging body 330, so that the second straight line can keep passing through the isocenter, and thus the beam projected by the therapy head 200 can keep passing through the isocenter.

In one embodiment, in order to ensure that the treatment head 200 can maintain the state of projecting the beam current toward the isocenter during the swinging of the swinging body 330 with respect to the gantry 100, the slider assembly 320 may include a first slider 321 and a second slider 322, wherein the first slider 321 and the second slider 322 are slidably engaged with the first guide rail 310, and the first slider 321 and the second slider 322 are spaced apart. In addition, both the first slider 321 and the second slider 322 are fixedly connected to the swing body 330, and the first slider 321 and the second slider 322 may be fixed to the swing body 330 by a screw, welding, or clamping, or the like, but of course, the first slider 321 and the second slider 322 may also be integrally formed with the swing body 330. In this case, the swinging body 330 can slide along the first guide rail 310 by moving the first slider 321 and the second slider 322 along the first guide rail 310, and since the first slider 321 and the second slider 322 are both rigidly connected to the swinging body 330, the distance between the first slider 321 and the second slider 322 is kept constant during the movement of the first slider 321 and the second slider 322 along the first guide rail 310.

It should be noted that the first slider 321 and the second slider 322 may be engaged with the first guide rail 310 as follows: the first guide rail 310 may be a groove-shaped structure formed on the frame 100, and the first slider 321 and the second slider 322 have at least a part of a matching structure matching with the first guide rail 310, so that the sliding matching of the first slider 321 and the second slider 322 with the first guide rail 310 can be realized through matching. Of course, the first guide rail 310 may also be a structure formed by a protrusion on the frame 100, and correspondingly, the first slider 321 and the second slider 322 may be provided with a groove adapted to the first guide rail 310, so that the first slider 321 and the second slider 322 may be slidably engaged with the first guide rail 310 through their own grooves.

In addition, in other embodiments, the swinging device 300 can also swing the treatment head 200 in other manners. For example, the swing body 330 is connected to both sides of the frame 100 through a rotation shaft, a motor and a driving gear are disposed on one side of the frame 100, a chain is disposed on the driving gear, both ends of the chain are disposed on both sides of the swing body 330, the driving gear is driven by the motor, and the driving gear drives the chain, so that the swing body 330 is pulled to swing, thereby swinging the treatment head 200. Alternatively, for example: the swing main body 330 is connected to both sides of the frame 100 through a rotating shaft, wherein the rotating shaft of one side is connected to a motor, and the motor drives the rotating shaft to rotate, thereby driving the swing main body 330 to swing, so as to swing the therapeutic head 200.

In one embodiment, the radiotherapy apparatus 10 further comprises a rotating body 410, the swinging body 330 is provided with a through hole 331 for the rotating body 410 to be installed, the rotating body 410 is rotatably engaged with the swinging body 330, and the treatment head 200 is disposed on the rotating body 410, so that the treatment head 200 rotates around the second straight line. Alternatively, the rotating body 410 is slidably engaged with the inner circumferential wall of the through hole 331 of the swing body 330 through a turntable bearing, thereby achieving the rotatable engagement of the rotating body 410 with the swing body 330. It should be noted that, in the embodiment of the present application, the rotating body 410 is matched to provide a bearing function for the therapy head 200, and the rotation of the therapy head 200 relative to the swinging body 330 can be realized during the rotation of the rotating body 410 relative to the swinging body 330. It should be noted that a driving device for driving the rotating body 410 to rotate may be provided on the rotating body 410, and the driving device may be formed integrally with the rotating body 410. Of course, a driving means for driving the rotating body 410 may be provided on the frame 100 or the swinging body 330.

Note that, the radiotherapy apparatus 10 further includes a slip ring 412 and a carbon brush 4121, the slip ring 412 is disposed on the outer circumferential direction of the rotating body 410, and the carbon brush 4121 is fixed to the swinging body 330 and abuts against the slip ring 412. The slip ring 412 is configured to rotate together with the rotating body 410, so that the slip ring 412 and the carbon brush 4121 rotate relatively, and the carbon brush 4121 is always abutted against the slip ring 412, thereby enabling electric transmission between the slip ring 412 and the carbon brush 4121. In addition, slip ring 412 is electrically connected to treatment head 200 such that slip ring 412 can provide electrical power to treatment head 200 or transmit data to treatment head 200; the carbon brushes 4121 may be connected to an external power source to facilitate the transfer of electrical energy to the treatment tip 200, ensuring effective rotation of the treatment tip 200.

Referring to fig. 4, the radiotherapy apparatus 10 further comprises a cooling structure 420, the cooling structure 420 is disposed on the rotating body 410, and the cooling structure 420 is configured to guide the cooling liquid to flow through the treatment head 200. The cooling structure 420 can guide the cooling liquid to the treatment head 200 to provide a heat dissipation effect to the treatment head 200, so as to ensure that the radiotherapy device 10 can operate stably. It should be noted that, the cooling structure 420 can guide the cooling liquid to the therapy head 200, that is, through the guiding function of the cooling structure 420, the cooling liquid flows through the corresponding channel in the therapy head 200 to take away the heat generated by the therapy head 200, thereby achieving the cooling of the therapy head 200. Wherein, the cooling structure 420 is rotatably engaged with the rotating body 410 and fixed relative to the swinging body 330. That is, the cooling structure 420 is disposed at the geometric center of the rotating body 410, and when the rotating body 410 rotates, the cooling structure 420 is driven to rotate together. Also, since the cooling structure 420 is located at the geometric center of the rotating body 410, the cooling structure 420 is in a disabled state with respect to the swing body 330, that is, is fixed in position with respect to the swing body 330 while the cooling structure 420 rotates.

In some embodiments, in order to facilitate the installation of the cooling structure 420, a connecting rod (not shown) is protruded from the rotating body 410, one end of the connecting rod is connected to the rotating body 410, and the connecting rod extends along the axis of the rotating body 410, such that the rotating body 410 and the connecting rod have a T-shaped cross section. Note that, the rotating body 410 is substantially disc-shaped. A cooling structure 420 is provided at the other end of the connecting rod.

In one embodiment, the cooling structure 420 includes a fixed portion 421 and a rotating portion 422. The fixing portion 421 is fixed relative to the swinging body 330, and the fixing portion 421 can be fixed relative to the swinging body 330 by arranging a fixed bracket (not shown) on the swinging body 330; the rotating part 422 is rotatably disposed inside the fixing part 421, and the rotating part 422 is connected with the rotating body 410; wherein the rotating part 422 is connected to the rotating body 410 through a connecting rod.

First liquid inlet pipeline 431 and first liquid outlet pipeline 432 are arranged on fixing portion 421, one end of first liquid inlet pipeline 431 and first liquid outlet pipeline 432 is connected with an external temperature control box pipeline, the temperature control box can guide cooling liquid to treatment head 200 from first liquid inlet pipeline 431, and after cooling liquid circulates at treatment head 200 and completes cooling of treatment head 200, the cooling liquid can be guided out to the temperature control box pipeline through first liquid outlet pipeline 432, so that circulation of the cooling liquid is realized. The temperature control box is used for controlling the temperature of liquid entering the temperature control box.

Correspondingly, the rotating part 422, the rotating body 410 and the therapy head 200 are provided with cooling pipelines 433 inside, and the other ends of the first liquid inlet pipeline 431 and the first liquid outlet pipeline 432 are respectively connected with the cooling pipelines 433, so that the cooling liquid introduced through the first liquid inlet pipeline 431 flows into the therapy head 200 through the guiding of the cooling pipelines 433, and after the cooling liquid completes the cooling effect, the cooling liquid can be guided to the first liquid outlet pipeline 432 to lead out the cooling liquid.

In order to facilitate the connection between the first liquid inlet pipe 431 and the cooling pipeline 433 and to facilitate the connection between the first liquid outlet pipe 432 and the cooling pipeline 433, the first liquid inlet pipe 431 includes a liquid inlet 4311 and a liquid inlet chamber 4312, and the first liquid outlet pipe 432 includes a liquid outlet 4321 and a liquid outlet chamber 4322. The liquid inlet chamber 4312 and the liquid outlet chamber 4322 are circumferentially and annularly arranged at the inner side of the fixing part 421, and the liquid inlet chamber 4312 and the liquid outlet chamber 4322 are spaced; the liquid inlet 4311 and the liquid outlet 4321 are both arranged outside the fixing portion 421, the liquid inlet 4311 is communicated with the liquid inlet chamber 4312, and the liquid outlet 4321 is communicated with the liquid outlet chamber 4322. The liquid inlet 4312 and the liquid inlet 4311 are both cavities formed on the fixing portion 421, and similarly, the liquid outlet 4322 and the liquid outlet 4321 are both cavities formed on the fixing portion 421. Of course, in other embodiments, the liquid inlet chamber 4312, the liquid inlet 4311, the liquid outlet chamber 4322 and the liquid outlet 4321 may be cavities formed by pipes disposed inside the fixing portion 421.

In addition, in some embodiments of the present application, a second liquid inlet pipe 4331 and a second liquid outlet pipe 4332 are disposed inside the rotating portion 422, and both the second liquid inlet pipe 4331 and the second liquid outlet pipe 4332 form an opening outside the rotating portion 422; one end of the second liquid inlet pipe 4331 is connected to the first liquid inlet pipe 431 through the opening, and one end of the second liquid outlet pipe 4332 is connected to the first liquid outlet pipe 432 through the opening. The other end of the second liquid inlet pipe 4331 is connected to the rotating body 410 and the cooling pipe 433 in the therapy head 200, and the other end of the second liquid outlet pipe 4332 is connected to the rotating body 410 and the cooling pipe 433 in the therapy head 200. Illustratively, the second liquid inlet pipe 4331 is communicated with the liquid inlet cavity 4312 of the first liquid inlet pipe 431 through an opening; the second liquid outlet pipe 4332 is communicated with the liquid outlet cavity 4322 of the first liquid outlet pipe 432 through an opening. The second liquid inlet pipe 4331 and the second liquid outlet pipe 4332 are cavities provided inside the rotating portion 422, and of course, the second liquid inlet pipe 4331 and the second liquid outlet pipe 4332 may be pipes provided inside the rotating portion 422.

In the process that the rotating part 422 rotates relative to the fixed part 421, the cooling liquid is introduced into the liquid inlet chamber 4312 through the liquid inlet 4311, and in this process, even if the rotating part 422 is in a rotating state, the second liquid inlet pipe 4331 is always in a state of being communicated with the liquid inlet chamber 4312, so that the cooling liquid can be continuously introduced into the second liquid inlet pipe 4331; similarly, the second liquid outlet pipe 4332 is always in a state of being communicated with the liquid outlet chamber 4322, so that the second liquid outlet pipe 4332 can continuously lead the cooling liquid out to the liquid outlet chamber 4322; this allows circulation of the cooling liquid, thereby improving the cooling effect and cooling efficiency of the treatment head 200.

It should be noted that, in some embodiments of the present application, in order to improve the cooling effect of the therapy head 200, a plurality of second liquid inlet conduits 4331 may be provided, and correspondingly, a plurality of liquid inlet ports 4311 and liquid inlet chambers 4312 may also be provided; the plurality of second liquid inlet pipes 4331 are respectively communicated with the plurality of liquid inlet chambers 4312, so that the cooling liquid can be introduced into the plurality of second liquid inlet pipes 4331 through the plurality of liquid inlet chambers 4312 at the same time, thereby improving the cooling efficiency. In order to prevent the plurality of liquid inlet chambers 4312 from interfering with each other, the plurality of liquid inlet chambers 4312 may be spaced apart. Of course, in other embodiments of the present application, the plurality of second liquid inlet pipes 4331 may be simultaneously communicated with one liquid inlet chamber 4312, so that the cooling liquid is introduced into the plurality of second liquid inlet pipes 4331 through the one liquid inlet chamber 4312.

Similarly, the number of the second liquid outlet pipes 4332 may be multiple, and correspondingly, the number of the liquid outlets 4321 and the number of the liquid outlet cavities 4322 may also be multiple; the second liquid outlet pipes 4332 are respectively communicated with the liquid outlet cavities 4322, so that the cooling liquid can be led out to the liquid outlet cavities 4322 through the second liquid outlet pipes 4332, the circulation rate of the cooling liquid is increased, and the cooling efficiency is increased. In order to prevent the liquid outlet chambers 4322 from interfering with each other, the liquid outlet chambers 4322 may be disposed at intervals. Of course, in other embodiments of the present application, the second liquid outlet pipes 4332 may be simultaneously communicated with one liquid outlet chamber 4322, so that the cooling liquid is simultaneously guided out of the liquid outlet chamber 4322 through the second liquid outlet pipes 4332.

Fig. 4 is a sectional view of the cooling structure 420, wherein two liquid inlet chambers 4312 are provided and correspond to the two liquid inlet ports 4311; two liquid outlet cavities 4322 are provided, corresponding to the two liquid outlets 4321; the two liquid inlet chambers 4312 and the two liquid outlet chambers 4322 are arranged in a staggered manner, and the four cavities of the two liquid inlet chambers 4312 and the two liquid outlet chambers 4322 are arranged at intervals. Two second liquid inlet pipelines 4331 are provided, and the two second liquid inlet pipelines 4331 are respectively communicated with the two liquid inlet cavities 4312; the number of the second liquid outlet pipes 4332 is two, and the two second liquid outlet pipes 4332 are respectively communicated with the two liquid outlet cavities 4322. The two second liquid inlet pipes 4331 are arranged at intervals inside the rotating portion 422, and similarly, the two second liquid outlet pipes 4332 are arranged at intervals in the rotating portion 422.

Referring to fig. 3 and 5, the treatment head 200 includes a radiation generating device 210 and a collimator 220. The rotating body 410 is provided with mounting holes for mounting the ray generating device 210 and the collimator 220, the ray generating device 210 is arranged at the position of the mounting hole on the upper end surface of the rotating body 410 and configured to emit beam current along a first straight line, and the first straight line has a preset included angle in the vertical direction. The collimator 220 is disposed at a mounting hole of the lower end surface of the rotating body 410, the collimator 220 has a plurality of collimating channels 223, and the collimator 220 is configured to rotate relative to the radiation generating device 210 so that one of the collimating channels 223 corresponds to a beam outlet of the radiation generating device 210, and a beam passes through the collimating channel 223.

In one embodiment, the rotating body 410 has a mounting hole formed therein, which is eccentrically disposed on the rotating body 410, i.e., the mounting hole is not located at the geometric center of the rotating body 410. The axis direction of the mounting hole is a first straight line direction, and a preset angle is formed between the axis direction of the mounting hole and a second straight line direction. The radiation generating device 210 may be a linear accelerator. The radiation generating device 210 is disposed on an upper end surface of the mounting hole, and the collimator 220 is mounted on a lower end surface of the mounting hole. The radiation generated by the radiation generating means 210 passes through the mounting hole and out of a collimating passage 223 of the collimator 220 to the isocenter of the radiotherapy apparatus 10. Moreover, the collimator 220 in the embodiment of the present application is provided with a plurality of collimating channels 223, each collimating channel 223 is eccentrically disposed on the collimator 220, and the distance from the center of each collimating channel 223 to the center of the collimator 220 is equal, so as to ensure that the collimator 220 only needs to rotate, and different collimating channels 223 can be adjusted to align with the beam outlet of the radiation generating device 210. The size of the apertures of the collimating channels 223 in the plurality of collimating channels 223 may vary.

In one embodiment, the collimator 220 includes a rotation shaft 221 and a collimating part 222; the collimating part 222 is sleeved on the rotating shaft 221 and is in rotating fit with the rotating shaft 221, the rotating shaft 221 is fixedly connected with the rotating main body 410, and a plurality of collimating channels 223 with different apertures are formed on the collimating part 222; the collimating part 222 is configured to rotate relative to the rotating shaft 221 so that one of the collimating channels 223 corresponds to the beam outlet of the radiation generating device 210, so that the therapeutic beam projected by the radiation generating device 210 enters the corresponding collimating channel 223. The collimating channel 223 is a hole with an increasing aperture, and the beam enters the collimating channel 223 from the end of the collimating channel 223 with a smaller aperture.

It should be noted that, in some embodiments of the present application, the plurality of collimating channels 223 may be arranged in a manner that the aperture is sequentially increased, and of course, the plurality of collimating channels 223 may also be arranged in a random manner.

In an embodiment of the application, the gantry 100 comprises at least a plurality of uprights 110, the plurality of uprights 110 together enclosing a treatment space 101. The rack 100 in fig. 1 is taken as an example for explanation. The number of the vertical columns 110 is four, and the four vertical columns 110 are connected in pairs to form a square. In addition, a mounting plate 111 is arranged between two columns 110, and the first guide rail 310 can be arranged on the mounting plate 111; in order to ensure that the swing body 330 can move stably, the other two upright posts 110 are also provided with the mounting plate 111, the mounting plate 111 is provided with the first guide rail 310, two opposite sides of the swing body 330 are respectively in sliding fit with the two first guide rails 310 through the slider assemblies 320, in other words, the two first sliders 321 and the two second sliders 322 are both provided, one first slider 321 and one second slider 322 are provided on one side of the swing body 330, and the other first slider 321 and the other second slider 322 are provided on the other side of the swing body 330. It should be noted that, the swing body 330 is arranged at the top of the rack 100 and drives the treatment head 200 to project beam downward, so that the radiation protection requirement of a room using the radiotherapy apparatus 10 can be reduced, and the cost of using the radiotherapy apparatus 10 in a matching manner can be reduced.

In addition, in order to facilitate the treatment of the patient, in the embodiment of the present application, the radiotherapy apparatus 10 further comprises a treatment couch 500 and a second guide rail 501; the second guide 501 is arranged below the treatment head 200; and the second guide 501 is circular; the couch 500 is slidably engaged with the second rail 501 to move the couch 500 within the treatment space 101. Optionally, the gantry 100 may comprise a base 120, the base 120 being arranged below the treatment head 200, and the second guide 501 may be arranged on the base 120. Of course, in other embodiments of the present application, the base 120 may be eliminated, and the second guide track 501 may be directly disposed on the ground.

The manner in which the couch 500 is slidably engaged with the second rail 501 may be as follows: a plurality of sliding blocks are arranged at the bottom of the bed body 510 and are in sliding fit with the second guide rail 501; or, a plurality of rollers are arranged at the bottom of the bed body 510, and the plurality of rollers are in sliding fit with the bed body 510.

The treatment couch 500 includes a couch 510 and a couch panel 520, the couch panel 520 is slidably engaged with the couch 510, and the couch panel 520 is configured to carry a patient, in other words, the patient can be treated while lying on the couch panel 520. Through the sliding of the bed panel 520 relative to the bed 510, the bed panel 520 can extend out of the treatment space 101, and the patient can be conveniently moved onto the bed panel 520. The sliding fit between the bed panel 520 and the bed 510 may be a pulley fit, or a sliding slot may be formed in the bed 510, so that the bed panel 520 is directly in sliding fit with the sliding slot. In addition, the deck plate 520 may also be motor driven to extend and retract.

In summary, the radiotherapy apparatus 10 provided in the embodiment of the present application can project a beam along a first straight line by the treatment head 200 under the condition of performing radiotherapy on a patient, and the treatment head 200 can also rotate relative to the gantry 100 along a second straight line; because the first straight line and the second straight line are arranged at an included angle, the beam projected by the treatment head 200 can provide treatment effect to the target point from different directions of the target point, so that the dosage of the target point can be ensured, and the dosage born by normal tissues around the target point can be reduced. In addition, since the treatment head 200 can also swing along a preset path relative to the frame 100, the treatment head 200 can be moved to different positions of the patient to project beam current from different positions of the patient to the target point, and the incident flexibility of the treatment head 200 can be improved. Therefore, the radiotherapy equipment 10 can realize flexible incident angle, ensure high dosage of the target point, reduce the dosage born by normal tissues around the target point and improve the comprehensive treatment precision.

In the embodiment of the application, the treatment head 200 adopts the linear accelerator, the single beam of X-rays generated by the linear accelerator is focused and irradiated through rotation, the dose is converged to the target area, the dose at the target point is high, the dose born outside the target point is greatly reduced, the stereotactic body treatment can be effectively carried out, and the treatment precision and the treatment effect are improved. Moreover, the collimator 220 in the embodiment of the present application is provided with a plurality of sets of collimation channels 223, the aperture of each set of collimation channels 223 is different, and the target areas with different sizes can be used by adjusting different collimation channels 223, so that the treatment of the head can be satisfied, and the treatment of the body can also be satisfied.

In the embodiment of the present application, since the treatment head 200 can rotate around the second straight line, the treatment head 200 can also swing non-coplanar on a preset path, and a circular second guide 501 is further disposed under the treatment couch 500, and the treatment couch 500 can rotate on the second guide 501. Therefore, the radiotherapy device 10 provided by the embodiment of the present application can generate a beam with more flexible incident angle, and the incident angle is large, and the absorbed dose of the normal tissues and organs around the target point is low.

In the embodiment of the present application, because frame 100 is the design of four stands 110 formulas of four legs, the treatment space 101 that its formed is wide, and the patient experiences the improvement in the treatment in open space to because treatment space 101 is wide enough, can avoid patient and radiotherapy equipment 10 to bump, improve the security of treatment.

In the embodiment of the present application, regardless of whether the treatment head 200 itself can rotate around the second straight line or the treatment head 200 performs non-coplanar swinging on a preset path, the direction of the generated beam is always towards the bottom surface, and therefore, for a machine room in which the radiotherapy apparatus 10 provided in the embodiment of the present application is installed, the top of the machine room does not need to be shielded too high, and the shielding requirement of the machine room is reduced.

In the embodiment of the present application, since the therapeutic head 200 itself can rotate around the second straight line rapidly and continuously, the cumulative dosage borne by the normal tissue around the target area is greatly reduced, and the normal tissue of the target area is effectively protected.

The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.

Claims

1. Radiotherapy equipment is characterized by comprising a rack and a treatment head;

a treatment space is formed inside the frame;

2. Radiotherapy apparatus according to claim 1, further comprising a rocking device by which the treatment head is arranged on the gantry;

3. Radiotherapy apparatus according to claim 2, characterized in that said oscillating means comprise: the first guide rail is arc-shaped with an isocenter as a circle center;

4. Radiotherapy apparatus according to claim 3, characterized in that said pendulous device further comprises: slider component and swing main part, the swing main part pass through slider component with first guide rail is connected, the treatment head rotationally sets up on the swing main part.

5. The radiotherapy apparatus of claim 4, further comprising a rotating body, wherein the swinging body is provided with a through hole for mounting the rotating body; the rotating body is rotatably matched with the swinging body, and the treatment head is arranged on the rotating body so as to enable the treatment head to rotate by taking a second straight line as an axis.

6. The radiotherapy apparatus of claim 5, further comprising a cooling structure disposed on the rotating body, rotatably engaged with the rotating body and fixed relative to the swinging body; the cooling structure is configured to direct a cooling fluid through the treatment head.

7. Radiotherapy apparatus according to claim 6, in which the cooling structure comprises a fixed part and a rotating part; the rotating part is rotatably arranged in the fixed part and is connected with the rotating body; a first liquid inlet pipeline and a first liquid outlet pipeline are arranged on the fixing part, and one ends of the first liquid inlet pipeline and the first liquid outlet pipeline are connected with an external temperature control box pipeline; cooling pipelines are arranged in the rotating part, the rotating main body and the treatment head; the other ends of the first liquid inlet pipeline and the first liquid outlet pipeline are respectively connected with a cooling pipeline.

8. Radiotherapy apparatus according to claim 7, in which the first liquid inlet conduit comprises a liquid inlet and a liquid inlet chamber and the first liquid outlet conduit comprises a liquid outlet and a liquid outlet chamber; the liquid inlet cavity and the liquid outlet cavity are circumferentially and annularly arranged on the inner side of the fixing part, and are spaced; the liquid inlet and the liquid outlet are both arranged at the outer side of the fixing part, the liquid inlet is communicated with the liquid inlet cavity, and the liquid outlet is communicated with the liquid outlet cavity;

9. The radiotherapy apparatus according to claim 5, further comprising a slip ring disposed in an outer circumferential direction of the rotating body and a carbon brush fixed to the swinging body and abutting against the slip ring; the slip ring is electrically connected with the treatment head.

10. Radiotherapy apparatus according to claim 1, further comprising a treatment couch and a second rail; the second guide rail is arranged below the treatment head and is circular; the treatment couch is in sliding fit with the second guide rail so that the treatment couch moves in the treatment space.

11. Radiotherapy apparatus according to claim 5, in which the treatment head comprises a radiation generating device and a collimator;

the collimator is arranged at a mounting hole position of the lower end face of the rotating body, the collimator is provided with a plurality of collimating channels, the collimator is configured to rotate relative to the ray generating device so that one of the collimating channels corresponds to a beam outlet of the ray generating device, and the beam passes through the collimating channels.

12. Radiotherapy apparatus according to claim 11, in which the collimator comprises a rotating shaft and a collimating part; the collimation part is sleeved on the rotating shaft and is in rotating fit with the rotating shaft; the rotating shaft is fixedly connected with the rotating main body; the collimating part is provided with a plurality of collimating channels with different apertures.