Radiation therapy system

Abstract

The present invention provides a radiation therapy system, which includes a radiation generating device for generating therapeutic radiation, an irradiation room for placing an irradiated body to be irradiated with radiation, a management room for implementing irradiation control, and a carrier for transporting and carrying the irradiated body, wherein the carrier includes a carrier for carrying the irradiated body, an adjustment component for adjusting the spatial position of the carrier, and a clamping component for fixing the carrier and the adjustment component together in a detachable manner, wherein the carrier clamping component adjustment component includes at least a first carrier and a second carrier of a size and / or shape different from that of the first carrier. The carriers of different sizes and / or shapes can be freely switched according to actual use requirements, so that the radiation therapy system can adapt to patients of different body shapes and different tumor locations.

Description

Technical Field

[0001] The invention relates to a radioactive ray irradiation system, in particular to a radiation therapy system. Background Art

[0002] With the development of atomic science, radiation therapy such as cobalt sixty, linear accelerator, electron beam, etc. has become one of the main means of cancer treatment. During the radiotherapy process, it is necessary to use a beam to continuously irradiate the patient for a certain period of time. During this period, the patient needs to be fixed on the carrier and moved to a predetermined position by an adjustment component connected to the carrier. In existing treatment equipment, the shape and size of the carrier are single, which cannot adapt to patients of different body shapes and different tumor locations. In addition, there are other facilities in the irradiation room. When the movement position of carriers of certain shapes and sizes is interfered, it is impossible to implement irradiation at the optimal irradiation point and the optimal irradiation angle, which reduces the treatment effect. Summary of the invention

[0003] In order to solve the above-mentioned problems, the present invention provides a radiation therapy system that can adapt to patients of different body shapes and different tumor locations, which includes a radiation generating device for generating therapeutic radiation, an irradiation room for placing an irradiated body to be irradiated with radiation, a management room for implementing irradiation control, and a loading device for transporting and carrying the irradiated body, the loading device includes a loading member for carrying the irradiated body, an adjustment component for adjusting the spatial position of the loading member, and a clamping component for fixing the loading member and the adjustment component together in a detachable manner, and the loading member includes at least a first loading member and a second loading member that is different in size and / or shape from the first loading member.

[0004] Furthermore, the clamping assembly includes a first positioning block arranged on the carrier, a second positioning block arranged on the adjustment assembly, and a locking member for locking or releasing the second positioning block compared to the first positioning block.

[0005] Further, the carrier includes a first surface arranged toward the first positioning block, the first positioning block is arranged on the first surface, the first positioning block is provided with a limiting groove for the second limiting block to be inserted along a first direction parallel to the first surface, a giving groove connected with the limiting groove in a second direction perpendicular to the first surface for the adjustment component to pass through, and a locking hole connected with the limiting groove and cooperating with the locking member, the limiting groove penetrates one of the surfaces of the first positioning block in the first direction to form an insertion port, and the second positioning block is inserted into the limiting groove along the first direction from the insertion port.

[0006] Furthermore, the locking member includes a mounting portion fixedly connected to the second positioning block, a locking pin capable of being inserted into or removed from the locking hole, and a first driving member driving the locking pin to be inserted into or removed from the locking hole, and the locking hole passes through the first positioning block and is connected to the limiting groove.

[0007] Furthermore, the carrier device also includes a detection component, which detects whether the locking pin has moved into place to determine whether the carrier and the adjustment component are effectively connected together.

[0008] Furthermore, the radiation therapy system also includes a positioning device for controlling the motion trajectory of the carrier.

[0009] Furthermore, the positioning device includes a laser positioning component, an alignment component, an optical verification component, a distance measurement component, a driving component for driving the adjustment component to move so as to drive the carrier to move, and a control component for controlling the movement trajectory of the adjustment component.

[0010] Furthermore, the alignment assembly includes a positioning frame whose relative position with the carrier is adjustable, a support rod connected between the carrier and the positioning frame for adjusting the relative position between the positioning frame and the carrier, and a locking member for locking the relative position between the positioning frame and the carrier.

[0011] Furthermore, the radiation therapy system further comprises a transmission device disposed between the adjustment component and the carrier to enable the carrier to move relative to the adjustment component.

[0012] Furthermore, the transmission device includes a base plate fixedly connected to the adjustment assembly, a guide member arranged on the base plate, a slider capable of sliding relative to the guide member, a driving block driving the slider to move, and a second driving member driving the driving block to move.

[0013] Compared with the prior art, the technical solution described in this embodiment has the following beneficial effects: the clamping assembly can fix the carriers of different sizes and / or shapes to the adjustment assembly in a detachable manner, so the radiation therapy system of the present invention can switch the carriers of different shapes and / or sizes according to different usage requirements, so that the radiation therapy system can adapt to patients of different body shapes and different tumor locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a top view of the radiation therapy system of the present invention without the carrier device and the positioning device;

[0015] Figure 2 is a three-dimensional schematic diagram of an irradiation room of a radiation therapy system of the present invention;

[0016] Figure 3 is a three-dimensional schematic diagram of the carrying device of the radiation therapy system of the present invention without the transmission device installed;

[0017] Figure 4 is a three-dimensional schematic diagram of a flat plate-shaped carrier and a first positioning block of the radiation therapy system of the present invention;

[0018] Figure 5 is a three-dimensional schematic diagram of a second positioning block and a locking member of the radiation therapy system of the present invention;

[0019] Figure 6 is a three-dimensional schematic diagram of a chair-shaped carrier and a first positioning block of the radiation therapy system of the present invention;

[0020] Figure 7 is a three-dimensional schematic diagram of a flat-plate-shaped carrier and an alignment assembly of a radiation therapy system of the present invention;

[0021] Figure 8 It is a three-dimensional schematic diagram of the transmission device of the radiation therapy system of the present invention. DETAILED DESCRIPTION

[0022] Radiation therapy is a common method of treating cancer. Figures 1 to 8 As shown, the radiation therapy system for performing radiation therapy includes a radiation generating device 1 for generating therapeutic radiation, an irradiation room 2 for placing an irradiated object to be irradiated with the radiation, a management room 3 for implementing irradiation control, a carrying device 4 for transporting and carrying patients, and a positioning device for controlling the movement trajectory of the carrying device 4.

[0023] Reference Figure 3 As shown, the carrying device 4 includes a carrying member 41 for carrying the patient, an adjusting assembly 42 for adjusting the spatial position of the carrying member 41 , and a clamping assembly 43 for fixing and connecting the carrying member 41 and the adjusting assembly 42 together in a detachable manner.

[0024] The carrier 41 corresponds to a variety of models according to different shapes and / or sizes, for example: a flat first carrier 41', a chair-shaped second carrier 41", and in order to adapt to patients of different body shapes and different tumor locations, the first carrier 41' and the second carrier 41" can be set in a variety of sizes. For example: when a patient needs a certain irradiation angle, and the current carrier 41 cannot be adjusted into place due to interference with other devices in the irradiation room 2 in shape and / or size, it can be considered to switch the current carrier 41 to a carrier 41 of another shape and / or size to achieve the adjustment of the irradiation angle, or when the patient is lying flat on his back. For example, when the back of the head cannot be irradiated, using a carrier chair to carry the patient can achieve a better treatment effect.

[0025] Reference Figure 4 As shown, the carrier 41 includes a first surface 411 for mounting the clamping assembly 43 and a second surface 412 for supporting the patient. The adjustment assembly 42 can drive the carrier 41 to move in six degrees of freedom.

[0026] The clamping assembly 43 includes a first positioning block 431 disposed on the first surface 411 of the carrier 41, a second positioning block 432 disposed on the adjustment assembly 42, and a locking member 433 disposed on the second positioning block 432 for locking or releasing the second positioning block 432 relative to the first positioning block 431. Specifically, the first positioning block 431 is provided with a limiting groove 4311 for the second positioning block 432 to be inserted in a first direction parallel to the first surface 411, a giving groove 4312 connected to the limiting groove 4311 in a second direction perpendicular to the first surface 411, and a locking hole 4313 connected to the limiting groove 4311 and matched with the locking member 433. The limiting groove 4311 penetrates one of the surfaces of the first positioning block 431 in the first direction to form an insertion port 4314, and the second positioning block 432 is inserted into the limiting groove 4311 from the insertion port 4314 along the first direction.

[0027] The first direction of the second positioning block 432 inserted into the limiting groove 4311 is defined as the front-to-back direction, the second direction perpendicular to the first surface 411 is defined as the up-down direction, and the direction orthogonal to both the front-to-back direction (first direction) and the up-down direction (second direction) is defined as the left-right direction. The limiting groove 4311 is connected to the clearance groove 4312 in the up-down direction and penetrates the first positioning block 431 in the direction away from the carrier 41, and the adjustment component 42 is connected to the second positioning block 432 through the clearance groove. In the left-to-right direction, the size of the clearance groove 4312 is smaller than the size of the limiting groove 4311 and the size of the second positioning block 432, so the second positioning block 432 will not be separated from the limiting groove 4311 in the up-down direction.

[0028] Reference Figure 5 As shown, the locking member 433 includes a mounting portion 4331 fixedly connected to the second positioning block 432, a locking pin 4332 capable of being inserted into or removed from the locking hole 4313, and a first driving member 4333 driving the locking pin 4332 to be inserted into or removed from the locking hole 4313. The locking hole 4313 penetrates the first positioning block 431 in the left-right direction and communicates with the limiting groove 4311. The locking pin 4332 is inserted into or removed from the locking hole 4313 to selectively prevent the first positioning block 431 from moving relative to the first positioning block 431 in the front-to-back direction, while the limiting groove 4311 only penetrates one of the surfaces of the first positioning block 431 in the front-to-back direction and the left-to-right direction parallel to the first surface 411. When the locking pin 4332 is inserted into the locking hole 4313, the movement of the second positioning block 432 relative to the first positioning block 431 in the front-to-back direction and the left-to-right direction is prevented, thereby detachably fixing the adjustment assembly 42 to the carrier 41.

[0029] In order to prevent the locking pin 4332 from failing to move into place, resulting in the first positioning block 431 and the second positioning block 432 not being able to be firmly connected together, the loading device 4 also includes a detection component (not shown), which detects whether the locking pin 4332 has moved into place to determine whether the loading member 41 and the adjustment component 42 are effectively connected together.

[0030] Combination Figure 2 and Figure 7 As shown, the positioning device includes a laser positioning component 51, an alignment component 52, an optical verification component (not shown), a distance measurement component (not shown), a driving component (not shown) for driving the adjustment component 42 to move so as to drive the carrier 41 to move, and a control component (not shown) for controlling the movement trajectory of the adjustment component 42.

[0031] The adjusting component 42 is driven by the driving component to drive the carrier 41 to move in six degrees of freedom.

[0032] The irradiation room 2 is provided with a collimator 21 for emitting the radiation generated by the radiation generating device 1. The radiation is emitted from the outlet of the collimator 21 and defines a beam axis X, which coincides with the center line of the collimator 21. On the beam axis X, the position 15-20CM away from the outlet of the collimator 21 is the best treatment point. During the treatment process, the patient's lesion needs to coincide with the best treatment point.

[0033] Reference Figure 2 As shown, the laser positioning assembly 51 includes at least two laser emitters arranged at different positions, and the at least two laser emitters are respectively arranged on two different walls of the irradiation room 2, and usually, one of them is arranged on the top wall of the irradiation room 2. The lasers emitted by the at least two laser emitters have a unique laser intersection point, which coincides with the above-mentioned optimal treatment point.

[0034] Reference Figure 7 As shown, the alignment component 52 includes a positioning frame 521 whose relative position with the carrier 41 is adjustable, a support rod 522 connected between the carrier 41 and the positioning frame 521 for adjusting the relative position between the positioning frame 521 and the carrier 41, and a locking member (not shown) for locking the relative position between the positioning frame 521 and the carrier 41, and the positioning frame 521 has a positioning point. In the embodiment disclosed in the present invention, the support rod 522 has three rods that can rotate relative to each other, and the position of the positioning frame 521 relative to the carrier 41 is adjusted by adjusting the relative angles and positions between the three rods. After the patient lies or sits on the carrier 41, the medical staff adjusts the support rod 522 to align the positioning point of the positioning frame 521 with the optimal irradiation point of the patient, and then locks the position of the positioning frame 521 with the locking member.

[0035] The optical verification components include a CCD camera and image processing and recognition modules.

[0036] The distance measuring component detects the distance between the positioning point and the laser intersection point in a direction perpendicular to the second surface 412 of the carrier 41 . The distance measuring component may be a commonly used distance measuring instrument such as a laser rangefinder.

[0037] The CCD camera is used to shoot relevant images, and the image processing and recognition module is used to analyze the coordinates and relative angle of a certain point in the image shot by the CCD camera.

[0038] The working process of the positioning device is as follows:

[0039] S1: The laser positioning component 51 marks the best treatment point through the laser intersection point, and the best treatment point corresponds to the coordinates (X, Y, Z) and the relative angle α;

[0040] S2: The CCD camera takes a picture of the laser intersection to obtain a photo, and the image processing and recognition module analyzes the coordinates (x, y) and relative angle α of the laser intersection in the photo and records them;

[0041] S3: The patient lies or sits on the carrier 41, and the medical staff adjusts the support rod 522 to align the positioning point of the positioning frame 521 with the patient's lesion, and then locks the position of the positioning frame 521 with a locking member;

[0042] S4: The CCD camera takes a picture of the patient lying or sitting on the carrier 41 and the alignment component 52 is adjusted to the right position, and then the image processing and recognition module analyzes the coordinates (x1, y1) and the relative angle α1 of the positioning point of the alignment component 52 in the picture and records them. Then, the image processing and recognition module calculates the coordinate difference between the positioning point and the laser intersection point: X0 = X1-X, Y0 = Y1-Y, α0 = α1-α;

[0043] S5: The control component determines the motion trajectory of the adjustment component 42 through calculation according to the coordinate difference obtained from the optical verification component, and then the control component controls the driving component to drive the adjustment component 42 to move, so that the patient's lesion on the mounting member 41 is moved to the position corresponding to the coordinates (x, y) and the relative angle α;

[0044] S6: The distance measuring component detects the distance Z between the positioning point and the laser intersection point in a direction perpendicular to the second surface 412 of the carrier 41;

[0045] S7: The control component determines the motion trajectory of the adjustment component 42 through calculation based on the data obtained from the ranging component, and then the control component controls the driving component to drive the adjustment component 42 to move, so that the patient's lesion on the carrier 41 is moved to the optimal treatment point, that is, the position corresponding to the coordinates (X, Y, Z) and the relative angle α for treatment.

[0046] Before performing step S3, the carrier 41 can be moved to a position close to the laser intersection point by visual inspection. The position is determined by medical personnel based on experience and the patient's body shape, lesion, etc.

[0047] Step S6 may be performed before step S5. In this case, step S5 and step S7 are combined to directly adjust the mounting member 41 to a position corresponding to the coordinates (X, Y, Z) and the relative angle α.

[0048] In the above working process, a certain point on the adjustment component 42 is set as the coordinate origin. Of course, the coordinate origin can also be set at any other point.

[0049] In the embodiment disclosed in the present invention, the positioning frame 521 is a cross positioning frame, and the positioning point is a cross intersection point. In other embodiments, the positioning frame 521 can be a V-shaped positioning frame, etc., and the positioning point can be any marking point of any positioning frame.

[0050] Reference Figure 8 As shown, due to the presence of various devices in the irradiation chamber 2, the adjustment component 42 may interfere with these devices at certain positions, resulting in a certain restriction on the running trajectory of the adjustment component 42, so that the patient's lesion cannot be moved to the optimal treatment point. In another embodiment of the present invention, a transmission device 6 is provided between the adjustment component 42 and the carrier 41, so that the carrier 41 can move relative to the adjustment component 42 to ensure that the patient's lesion can be moved to the optimal treatment point to the maximum extent.

[0051] In the embodiment disclosed in the present invention, the transmission device 6 is arranged between the second positioning block 432 and the adjustment assembly 42, and the transmission device 6 includes a base plate 61 fixedly connected to the adjustment assembly 42, a guide member 62 arranged on the base plate 61, a slider 63 capable of sliding relative to the guide member 62, a driving block 64 connected between the slider 63 and the second positioning block 432, and a second driving member 65 for driving the driving block 64 to move.

[0052] The guide member 62 is two spaced apart guide rails arranged in parallel with each other, the slider 63 rides on the guide rails, the driving block 64 is fixedly connected to the second positioning block 432 and connected between the second driving member 65 and the slider 63, the second driving member 65 is preferably a motor, or a cylinder, the second driving member 65 drives the driving block 64 to move, thereby driving the slider 63 to move along the direction defined by the guide member 62, and the driving block 64 simultaneously drives the second positioning block 432 to move, so that the carrier 41 moves relative to the adjustment assembly 42 on the predetermined track of the guide member 62. Because the carrier 41 and the adjustment assembly 42 can move relative to each other, the movement range of the carrier 41 can be increased by 30%, thereby increasing the treatable range.

[0053] In the embodiment disclosed in the present invention, the adjustment component 42 is a mechanical arm. In other embodiments, the adjustment component 42 can be configured as a structure such as a bracket.

[0054] In other embodiments, the drive block 64 may not be provided, and the second positioning block 432 may be used instead of the drive block 64; in other embodiments, the transmission device 6 may be provided between the carrier 41 and the first positioning block 431; in addition, the transmission device 6 may also be provided between the carrier 41 and the first positioning block 431. In this case, the transmission device 6 and the first positioning block 431 may be provided as a whole, and the transmission device 6 and the carrier 41 may be connected together in a manner that allows for quick installation and removal.

[0055] The present invention uses a clamping assembly 43 to quickly disassemble or install the mounting component 41 and the adjustment component 42 together, so that the size and shape of the mounting component 41 can be freely switched according to actual usage requirements, so that the radiation therapy system can adapt to patients of different body shapes and different tumor locations, and increase the treatment irradiation range, improve efficiency, and reduce the time the operator spends in the irradiation room 2.

[0056] The carrier 41 is automatically and quickly moved to the position by the positioning device, thereby improving the treatment efficiency and reducing the time the operator spends in the irradiation room 2 .

[0057] A transmission device 6 is provided between the carrier 41 and the adjustment assembly 42, so that the carrier 41 and the adjustment assembly 42 can move relative to each other, and the movement range of the carrier 41 can be increased by 30%, thereby increasing the treatable range.

[0058] Neutron capture therapy has been increasingly used in recent years as an effective means of treating cancer, among which boron neutron capture therapy is the most common, and the neutrons supplied for boron neutron capture therapy can be supplied by a nuclear reactor or an accelerator. Preferably, the above-mentioned radiation is a neutron beam, the radiation generating device 1 is a neutron beam generating device, and the radiation therapy system is a neutron capture therapy system, and more preferably, the neutron capture therapy system is an accelerator boron neutron capture therapy system.

[0059] The radiation therapy system and the mounting table disclosed in the present invention are not limited to the contents described in the above embodiments and the structures shown in the drawings. Any obvious changes, substitutions or modifications made to the materials, shapes and positions of the components thereof on the basis of the present invention are within the scope of protection claimed by the present invention.

Claims

1. A radiation therapy system, characterized in that: The invention comprises a radiation generating device for generating therapeutic radiation, an irradiation room for placing an irradiated body to be irradiated with radiation, a management room for implementing irradiation control, and a carrying device for transporting and carrying the irradiated body, wherein the carrying device comprises a carrying member for carrying the irradiated body, an adjusting assembly for adjusting the spatial position of the carrying member, and a clamping assembly for fixing and connecting the carrying member and the adjusting assembly together in a detachable manner, wherein the carrying member comprises at least a first carrying member and a second carrying member having a size and / or shape different from that of the first carrying member; The clamping assembly includes a first positioning block arranged on the carrier, a second positioning block arranged on the adjustment assembly, and a locking member for locking or releasing the second positioning block relative to the first positioning block; The carrier comprises a first surface arranged toward the first positioning block, the first positioning block is arranged on the first surface, the first positioning block is provided with a limiting groove for inserting the second limiting block along a first direction parallel to the first surface, a giving groove connected with the limiting groove in a second direction perpendicular to the first surface for the adjustment component to pass through, and a locking hole connected with the limiting groove and matched with the locking member, the limiting groove passes through one of the surfaces of the first positioning block in the first direction to form an insertion opening, and the second positioning block is inserted into the limiting groove along the first direction from the insertion opening; The adjustment component is a mechanical arm or a bracket.

2. The radiation therapy system according to claim 1, characterized in that: The locking member includes a mounting portion fixedly connected to the second positioning block, a locking pin capable of being inserted into or removed from the locking hole, and a first driving member driving the locking pin to be inserted into or removed from the locking hole. The locking hole passes through the first positioning block and is connected to the limiting groove.

3. The radiation therapy system according to claim 2, characterized in that: The carrier device further comprises a detection component, which detects whether the locking pin has moved into position, thereby determining whether the carrier and the adjustment component are effectively connected together.

4. The radiation therapy system according to any one of claims 1 to 3, characterized in that: The radiation therapy system further comprises a positioning device for controlling the movement trajectory of the carrier.

5. The radiation therapy system according to claim 4, characterized in that: The positioning device includes a laser positioning component, an alignment component, an optical verification component, a distance measurement component, a driving component for driving the adjustment component to move so as to drive the carrier to move, and a control component for controlling the movement trajectory of the adjustment component.

6. The radiation therapy system according to claim 5, characterized in that: The alignment component includes a positioning frame whose relative position to the carrier is adjustable, a support rod connected between the carrier and the positioning frame for adjusting the relative position between the positioning frame and the carrier, and a locking member for locking the relative position between the positioning frame and the carrier.

7. The radiation therapy system according to claim 1, characterized in that: The radiation therapy system further comprises a transmission device arranged between the adjustment component and the carrier, which enables the carrier to move relative to the adjustment component.

8. The radiation therapy system according to claim 7, characterized in that: The transmission device includes a base plate fixedly connected to the adjustment assembly, a guide member arranged on the base plate, a slider capable of sliding relative to the guide member, a driving block driving the slider to move, and a second driving member driving the driving block to move.

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