CN217041105U - Gantry, radiotherapy equipment and imaging equipment - Google Patents

Abstract

The present disclosure provides a gantry, a radiotherapy apparatus and an imaging apparatus. The rack comprises a rack body, the rack body comprises a fixed frame and a rotating frame, and the fixed frame swings around a swing axis; the rotating frame is rotatably arranged on the fixed frame and synchronously swings around the swinging axis with the fixed frame; wherein the rotation axis of the rotating frame intersects the swing axis.

Description

Rack, radiotherapy equipment and imaging equipment

Technical Field

The utility model relates to the technical field of medical equipment, especially, relate to a frame, radiotherapy equipment and imaging device.

Background

In the prior art, for stereotactic radiotherapy, a radiotherapy head is mounted on a rotating frame in a gantry and rotates with the rotating frame, thereby performing radiotherapy on a target of a tumor patient. Since the rotating gantry rotates about a fixed axis of rotation, the radiation therapy head also rotates about the fixed axis of rotation, so that for a given radiation source of the radiation therapy head, the radiation beam always lies in the same treatment plane during a single rotation. The radiation source emits a beam that passes through the skin surrounding the target spot to irradiate the target spot, which, because radiation therapy is a continuous process, results in the skin irradiated by the beam being irradiated for a longer period of time, and thus is more damaged.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a frame, which is used for solving the problem that the radiation therapy in the prior art seriously damages the skin around the tumor; the utility model also aims to provide a radiotherapy device using the frame; an object of the utility model is also to provide an imaging device who uses above-mentioned frame.

In order to achieve the above object, the utility model provides a frame adopts following technical scheme:

in some embodiments, the rack includes a rack body, the rack body including:

the fixed frame swings around the swing axis;

the rotating frame is rotatably arranged on the fixed frame and synchronously swings around the swinging axis with the fixed frame;

wherein the rotation axis of the rotating frame intersects with the swing axis.

The rotating frame is used for installing the radiation therapy head, the fixing frame can swing around the swing axis, and under the condition that the rotating frame and the fixing frame synchronously swing around the swing axis, for any target ray source in the radiation therapy head arranged on the rotating frame, the rotating frame drives the radiation therapy head to rotate, the target ray source can obtain different therapy planes, and further, the target ray source irradiates skin at different positions to a target spot. During the treatment process, because the time for the radiation treatment is determined for the same target point, the treatment plane of a certain target radiation source in the radiation treatment head is changed by swinging the fixed frame and the rotating frame, so that the radiation for the radiation treatment passes through the skin at more positions to irradiate the target point, and therefore, the irradiation time for the skin at the same position is shortened, and the damage degree of the radiation to the skin is reduced.

In some embodiments, the axis of oscillation is perpendicular to the axis of rotation of the rotating gantry.

In some embodiments, the rotating frame comprises:

the first mounting part is rotatably mounted on the fixing frame and used for mounting the multiplexing ray source;

a second mounting part for mounting the first collimator and the second collimator;

the first installation part and the second installation part can move relatively, and when the first collimator or the second collimator is in butt joint with the multiplexing radiation source, the first installation part and the second installation part can synchronously rotate around a rotation axis relative to the fixed frame.

In some embodiments, the first mounting portion rotates relative to the second mounting portion about an axis of rotation; or,

the second mounting portion rotates relative to the first mounting portion about the axis of rotation; or,

the first mounting portion rotates about the axis of rotation at a different rate and/or in a different direction than the second mounting portion.

In some embodiments, the swivel mount further comprises a locking structure that locks the first mount and the second mount.

In some embodiments, the rotating frame and the fixed frame synchronously swing around the swing axis within the range of-40 degrees to +40 degrees.

In some embodiments, the rack further includes a base disposed at the bottom of the rack body, the fixing frame is rotatably connected to the base, and the fixing frame swings around the swing axis relative to the base.

In some embodiments, the rack further comprises a support frame rotatably connected to the mount for supporting the rack body.

The radiotherapy equipment provided by the utility model adopts the following technical scheme:

in some embodiments, the radiotherapy apparatus comprises a radiotherapy head and a gantry as described in any one of the embodiments above, the radiotherapy head being disposed on the rotating gantry.

The rotating frame is used for installing the radiation therapy head, the fixing frame can swing around the swing axis, and under the condition that the rotating frame and the fixing frame synchronously swing around the swing axis, for any target ray source in the radiation therapy head arranged on the rotating frame, the rotating frame drives the radiation therapy head to rotate, the target ray source can obtain different treatment planes, and further, the target ray source irradiates the skin from different positions to a target point. During the treatment process, because the time for the radiation treatment to the same target point is determined, the treatment plane of a certain target radiation source in the radiation treatment head is changed by swinging the fixed frame and the rotating frame, so that the radiation for the radiation treatment passes through the skin at more positions to irradiate the target point, and thus, the irradiation time of the skin at the same position is shortened, and the damage degree of the radiation to the skin is reduced.

In some embodiments, the radiation therapy head includes a stereotactic therapy head and/or a conformal intensity modulated therapy head.

In some embodiments, where the rotating gantry includes a first mount and a second mount, the radiation treatment head includes:

the multiplexing ray source is used for emitting rays and is arranged on the first installation part;

the first collimator is used for limiting the beam of rays and is arranged on the second installation part;

and the second collimator is used for limiting the beam of rays and is arranged on the second installation part.

In some embodiments, the first collimator is a channel collimator and the second collimator is a single or multi-layered multi-leaf collimator.

In some embodiments, the multiplexed source of radiation is an X-ray source.

In some embodiments, the axis of oscillation passes through the isocenter of the radiotherapy apparatus.

In some embodiments, the radiotherapy apparatus further comprises an imaging device comprising an imaging source and an imager, the imaging source and the imager being mounted on the gantry.

The utility model provides an imaging device adopts following technical scheme:

in some embodiments, the imaging device comprises an imaging source and an imager, the imaging source and the imager being mounted on a rotating gantry, and the gantry as described in any of the above embodiments.

In the process that the imaging source rotates along with the rotating frame, the area covered by the emitted rays is defined as an imaging plane, the fixed frame can swing around the swing axis, and the rotating frame can swing around the swing axis synchronously with the fixed frame, so that after the fixed frame and the rotating frame swing synchronously, the imaging device obtains a new imaging plane, and the imaging device can image the tumor of the patient from different angles.

Drawings

In order to more clearly illustrate the technical solutions of the present disclosure, the drawings required to be used in some embodiments of the present disclosure will be briefly described below, and it is apparent that the drawings in the following description are only drawings of some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art according to these drawings. Furthermore, the drawings in the following description may be regarded as schematic diagrams, and do not limit the actual size of products, the actual flow of methods, the actual timing of signals, and the like, involved in the embodiments of the present disclosure.

FIG. 1 is a block diagram of a frame (with the mount not swinging) according to some embodiments;

FIG. 2 is another block diagram of a gantry according to some embodiments (mount swing set angle);

FIG. 3 is a schematic illustration of two treatment planes formed before and after oscillation of the mount according to some embodiments;

FIG. 4A is a cross-sectional view B-B of the structure of FIG. 12;

FIG. 4B is a schematic view of the stationary frame and the rotating frame in a first extreme position and a second extreme position, respectively, according to some embodiments;

FIG. 5 is yet another block diagram of a gantry according to some embodiments (with the gantry not swinging);

FIG. 6 is yet another block diagram of a gantry according to some embodiments (mount swing set angle);

FIG. 7 is a schematic diagram of the mating of a base and a turntable according to some embodiments;

FIG. 8 is a block diagram of a base according to some embodiments;

FIG. 9 is a cross-sectional view A-A of the structure of FIG. 7;

FIG. 10 is yet another block diagram of a rack according to some embodiments;

FIG. 11 is a side view of the structure of FIG. 10;

FIG. 12 is a mating schematic view of a mount, a first mounting portion, and a second mounting portion according to some embodiments;

FIG. 13 is yet another block diagram of a rack according to some embodiments;

FIG. 14 is a block diagram of a radiation therapy apparatus according to some embodiments;

FIG. 15 is a block diagram of an imaging device according to some embodiments.

Detailed Description

The technical solutions in some embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present disclosure are within the scope of protection of the present disclosure.

Unless the context requires otherwise, throughout the description and the claims, the term "comprise" and its other forms, such as the third person's singular form "comprising" and the present participle form "comprising" are to be interpreted in an open, inclusive sense, i.e. as "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" and the like are intended to indicate that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the terms used above are not necessarily referring to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be included in any suitable manner in any one or more embodiments or examples.

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present disclosure, "a plurality" means two or more unless otherwise specified.

The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship as shown in the drawings, merely to facilitate the description of the invention and to simplify the description, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the invention.

It should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and can include, for example, a fixed connection, a removable connection, or an integral connection. They may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

"at least one of A, B and C" has the same meaning as "A, B or at least one of C", both including the following combination of A, B and C: a alone, B alone, C alone, a and B in combination, a and C in combination, B and C in combination, and A, B and C in combination.

"A and/or B" includes the following three combinations: a alone, B alone, and a combination of A and B.

In the related art, for stereotactic radiotherapy, a radiotherapy head is mounted on a rotating frame in a gantry and rotates together with the rotating frame, thereby performing radiotherapy on a target point of a tumor patient. Since the rotating gantry rotates about a fixed axis of rotation, the radiation therapy head also rotates about the fixed axis of rotation, so that the radiation beam emitted by one of the radiation sources of the radiation therapy head is always located in the same treatment plane during one rotation. The radiation source emits a beam that passes through the skin surrounding the target spot to irradiate the target spot, which results in a longer exposure of the skin irradiated by the beam and a more severe degree of damage, since radiation treatment is a continuous process.

In order to solve the above problem, as shown in fig. 1, the present disclosure provides a rack 01, where the rack 01 includes a rack body 100, the rack body 100 includes a fixed frame 1 and a rotating frame 2, the fixed frame 1 swings around a swing axis 3 (in a direction of a solid arrow shown in fig. 2), and the rotating frame 2 is rotatably mounted on the fixed frame 1 and swings around the swing axis 3 synchronously with the fixed frame 1; wherein the rotation axis 24 of the rotating frame 2 intersects the swing axis 3, as shown in fig. 2.

For example, as shown in fig. 2, the rotating frame 2 may be a ring frame, the axis of the rotating frame 2 is the rotating axis 24 thereof relative to the fixed frame 1, and the inner cavity of the rotating frame 2 forms a treatment cavity 21 for treatment. The rotating frame 2 is used for mounting the radiation therapy head 4 and can drive the radiation therapy head 4 to rotate in a range of 360 degrees around the rotation axis 24 of the rotating frame. The patient 5 lies on the treatment bed 6 and is sent into the treatment cavity 21 of the rotating frame 2, and then the rotating frame 2 drives the radiation treatment head 4 to treat the patient 5.

Based on this, under the condition that the fixed frame 1 can swing around the swing axis 3, and the rotating frame 2 and the fixed frame 1 synchronously swing around the swing axis 3, when the fixed frame 1 is in the state as shown in fig. 1, for any target ray source in the radiation treatment heads 4 arranged on the rotating frame 2, the rotating frame 2 drives the radiation treatment heads 4 to rotate, and the contour line of the treatment plane of the target ray source is the first contour line 7 as shown in fig. 3. When the fixed frame 1 is in the state shown in fig. 2 after swinging around the swinging axis 3 by a set angle, the rotating frame 2 drives the radiation therapy head 4 to rotate, and the contour line of the treatment plane of the target radiation source is the second contour line 8 shown in fig. 3.

The treatment plane enclosed by the first contour line 7 is defined as a first treatment plane, and the treatment plane enclosed by the second contour line 8 is defined as a second treatment plane.

Obviously, the first treatment plane and the second treatment plane are not coplanar, then the target radiation source will illuminate the target spot from the skin at different positions.

Therefore, in the treatment process, because the time for the radiation treatment is determined for the same target point, the treatment plane of a certain target radiation source in the radiation treatment head 4 is changed by swinging the fixed frame 1 and the rotating frame 2, so that the radiation for the radiation treatment passes through the skin at more positions to irradiate the target point, and thus, the irradiation time for the skin at the same position is shortened, and the damage degree of the radiation to the skin is reduced.

It should be noted that the treatment plane refers to the range of the radiation beam emitted from the target radiation source in the radiation treatment head 4 during rotation around the rotation axis 24.

In addition, in order to make the radiation emitted from the target radiation source in the radiation therapy head 4 installed on the rotating frame 2 still irradiate the target spot of the patient 5 after the fixed frame 1 swings around the swing axis 3 synchronously with the rotating frame 2, in some cases, it may be necessary to realize that the radiation emitted from the target radiation source in the radiation therapy head 4 can irradiate the target spot of the patient 5 by moving the treatment couch 6.

To facilitate the positioning of the frame 01, in some embodiments, the swing axis 3 may be positioned perpendicular to the rotation axis 24 of the rotating frame 2. In this case, the pivot axis 3 lies in a plane perpendicular to the rotation axis 24.

Furthermore, in some embodiments of the present disclosure, in order to enable the patient 5 to be treated by different radiation treatment heads 4, it may therefore be necessary to provide at least two different types of radiation treatment heads 4 on the gantry 2. In this case, in order to reduce the weight that the entire frame 01 needs to bear, as shown in fig. 4A, the rotating frame 2 may include a first mounting portion 22 and a second mounting portion 23. The first mounting part 22 is rotatably mounted on the fixed frame 1, and the first mounting part 22 is used for mounting the multiplex radiation source 9. The second mounting portion 23 is used to mount the first collimator 10 and the second collimator 20. The first mounting portion 22 and the second mounting portion 23 are relatively movable, and when the first collimator 10 or the second collimator 20 is docked with the multiplex radiation source 9, the first mounting portion 22 and the second mounting portion 23 are also synchronously rotatable relative to the stationary gantry 1 about the rotation axis 24 of the rotating gantry 2.

Based on this, during the movement of the first mounting part 22 relative to the second mounting part 23, the first collimator 10 and the multiplex radiation source 9 can be docked so as to form one radiation treatment head, and the second collimator 20 can be docked with the multiplex radiation source 9 so as to form another radiation treatment head. Thus, although the radiotherapy equipment using the gantry 01 provided by the present disclosure is provided with two radiotherapy heads, since the two radiotherapy heads can share one multiplexing radiation source 9, the total weight of the two radiotherapy heads is reduced, and the weight borne by the gantry 01 is further reduced.

For example, the multiplexing radiation source 9 may be an X-ray source, and may specifically be an X-ray accelerator. The first collimator 10 may be a channel collimator and the second collimator 20 may be a single-layer multi-leaf collimator or a multi-layer multi-leaf collimator. Since the X-ray accelerator, the channel collimator, the single-layer multi-leaf collimator and the multi-layer multi-leaf collimator are the existing mature technologies, the detailed structures and working processes of the X-ray accelerator, the channel collimator, the single-layer multi-leaf collimator and the multi-layer multi-leaf collimator are not repeated here.

The manner in which the first mounting portion 22 moves relative to the second mounting portion 23 is illustrated below. For example, the first mounting portion 22 may rotate relative to the second mounting portion 23 around the rotation axis 24 of the rotating frame 2, that is, the second mounting portion 23 is fixed, and only the first mounting portion 22 is controlled to rotate, so that the first collimator 10 or the second collimator 20 may be in butt joint with the multiplex radiation source 9 during the rotation of the first mounting portion 22.

Alternatively, the second mounting portion 23 may rotate around the rotation axis 24 of the rotating frame 2 relative to the first mounting portion 22, that is, the first mounting portion 22 is fixed, and only the second mounting portion 23 is controlled to rotate, so that the first collimator 10 or the second collimator 20 may be in butt joint with the multiplex radiation source 9 during the rotation of the second mounting portion 23.

Alternatively, the first mounting portion 22 and the second mounting portion 23 may rotate about the rotational axis 24 of the turret 2 at different rates and/or in different directions. For example, if the first mounting portion 22 rotates counterclockwise around the rotation axis 24 of the rotating frame 2, the second mounting portion 23 may rotate clockwise around the rotation axis 24 of the rotating frame 2, and at this time, during the rotation of the first mounting portion 22 and the second mounting portion 23, the first collimator 10 or the second collimator 20 may be made to interface with the multiplex radiation source 9, or alternatively, the first mounting portion 22 and the second mounting portion 23 may also rotate in the same direction, but the angular velocities of the two portions are different, and during the rotation of the first mounting portion 22 and the second mounting portion 23, the first collimator 10 or the second collimator 20 may also be made to interface with the multiplex radiation source 9.

In some embodiments, the first mounting portion 22 and the second mounting portion 23 may also achieve relative movement through a sliding fit, such as: a slide rail is arranged between the first installation part 22 and the second installation part 23, the first installation part 22 may be fixed, the second installation part 23 slides relative to the first installation part 22 along the slide rail, or the second installation part 23 may be fixed, the first installation part 22 slides relative to the second installation part 23 along the slide rail, as long as it is ensured that the first collimator 10 and the second collimator 20 can be in butt joint with the multiplex radiation source 9 in the process of relative sliding of the first installation part 22 and the second installation part 23.

In some embodiments, the first mounting portion 22 may be an annular shelf or a C-shelf, and/or the second mounting portion 23 may be an annular shelf or a C-shelf. Illustratively, as shown in FIG. 4A, the first and second mounts 22, 23 are each annular frames, with the second mount 23 at least partially disposed within the first mount 22, and the first and second collimators 10, 20 mounted on the portions of the second mount 23 disposed within the first mount 22.

In some embodiments, the first mounting portion 22 may also be a C-shaped frame, and the second mounting portion 23 may also be a C-shaped frame, and the specific shapes of the first mounting portion 22 and the second mounting portion 23 are not limited by the present disclosure.

In order to prevent the rotating frame 2 or parts mounted on the rotating frame 2 from colliding with the treatment couch 6 or the patient 5 lying on the treatment couch 6 after the rotating frame 2 and the fixed frame 1 swing around the swing axis 3 in synchronization, in the embodiment of the present disclosure, the rotating frame 2 and the fixed frame 1 swing around the swing axis 3 in a range of-40 ° to +40 °. Specifically, as shown in fig. 4B, the fixed frame 1 together with the rotating frame 2 can swing by α ° from the first limit position a1 to the second limit position a2, and α has a value of 80. Certainly, -40 ° - +40 ° is the swing limit value range of the fixed frame 1 and the rotating frame 2, in some embodiments, the swing angle range of the fixed frame 1 and the rotating frame 2 is only in the range of-40 ° - +40 °, for example, may be-35 ° - +35 °, and may also be-30 ° - +30 °.

In the embodiment of the present disclosure, the rotating frame 2 rotates counterclockwise or clockwise about the rotation axis 24. Namely: the rotating frame 2 can rotate clockwise around the rotating axis 24 and counterclockwise around the rotating axis 24, and the rotating frame can be selected according to actual conditions. In some embodiments, the rotating gantry 2 may also be capable of only clockwise rotation about the rotation axis 24, or only counterclockwise rotation about the rotation axis 24, both of which may be used.

In the embodiment of the present disclosure, as shown in fig. 5, the rack 01 may further include a base 30, the base 30 is disposed at the bottom of the rack body 100, the fixing frame 1 is rotatably connected to the base 30, and the fixing frame 1 swings around the swing axis 3 relative to the base 30. The following describes a manner of swinging the mount 1 with respect to the base 30.

The rotation fit between the holder 1 and the base 30 is described by way of example with the pivot axis 3 extending in the X direction shown in fig. 1. As shown in fig. 7, a turntable 40 is rotatably mounted on the base 30, and the turntable 40 is rotatably mounted on the base 30 through a first bearing 50 as shown in fig. 9. Specifically, as shown in fig. 8, the base 30 is provided with a base mounting hole 301, and an axis of the base mounting hole 301 is collinear with the swing axis 3. As shown in fig. 9, the turntable 40 and the first bearing 50 are mounted in the base mounting hole 301. The turntable 40 comprises a large-diameter section 401 and a small-diameter section 402, wherein the axis of the large-diameter section 401 extends along the X direction, the large-diameter section 401 is coaxial with the small-diameter section 402, the large-diameter section 401 is located on the upper side of the small-diameter section 402, and a downward turntable step surface is formed at the adjacent position of the large-diameter section 401 and the small-diameter section 402.

In this way, the outer ring of the first bearing 50 is in interference fit with the hole wall surface of the base mounting hole 301, the outer peripheral surface of the small-diameter section 402 of the turntable 40 is in interference fit with the inner ring of the first bearing 50, the step surface of the turntable is supported on the end surface of the first bearing 50 facing the large-diameter section 401, and the other end surface of the first bearing 50 is attached to the hole bottom of the base mounting hole 301, so that the turntable 40 can rotate around the axis thereof relative to the base 30.

The above is merely an example, the fixed frame 1 and the base 30 may also be rotatably connected through other manners, for example, the fixed frame 1 and the base 30 are connected through a rotating shaft, the rotating shaft is disposed through the fixed frame 1 and the base 30, the axis of the rotating shaft is collinear with the swinging axis 3, and the fixed frame 1 can swing around the rotating shaft.

In addition, in the case that the fixing frame 1 is a ring frame, since the fixing frame 1 is not easily fixed to the turntable 40, as shown in fig. 5 and 6, a mounting plate 60 is welded and fixed to a lower side of the fixing frame 1, and the fixing frame 1 is fixedly mounted to the turntable 40 by the mounting plate 60 and the mating fastening bolt 70, so that the fixing frame 1 is mounted to the turntable 40, thereby realizing that the fixing frame 1 can rotate together with the turntable 40 relative to the base 30. Therefore, the fixing frame 1 is rotatably connected to the base 30, the base 30 can be used for supporting the fixing frame 1 and can rotate relative to the fixing frame 1, and the whole stability of the rack 01 is good.

On the basis, in order to further improve the stability of the rack 01, as shown in fig. 10 and 11, the rack 01 further includes a supporting frame 80, and the supporting frame 80 is rotatably connected with the fixing frame 1 for supporting the rack body 100. The supporting frame 80 is rotatably connected with the fixing frame 1, and the rotation axis and the swing axis 3 of the supporting frame 80 and the fixing frame 1 are collinear, so that when the fixing frame 1 swings around the swing axis 3, the base 30 is used for supporting and installing the fixing frame 1, the supporting frame 80 is used for supporting the fixing frame 1, and further, the whole rack 01 is more stable when the fixing frame 1 swings.

Illustratively, as shown in fig. 10 and 11, the supporting frame 80 includes a top plate 801 and a plurality of supporting columns 802, the top plate 801 is disposed on the top of the rack body 100 and is rotatably connected to the fixing frame 1, and the fixing frame 1 swings around a swing axis 3 relative to the supporting frame 80. A plurality of support posts 802 are disposed below the top plate 801 for supporting the top plate 801.

As shown in fig. 10 and 11, a connecting rod 90 is welded and fixed on the top of the fixing frame 1, the axis of the connecting rod 90 is collinear with the swing axis 3, and the connecting rod 90 is rotatably connected with the top plate 801, so that the fixing frame 1 is rotatably connected with the top plate 801.

In some embodiments, the frame 01 further includes a driving device for driving the rotating frame 2 to rotate relative to the fixed frame 1, and for driving the rotating frame 2 and the fixed frame 1 to synchronously swing around the swing axis 3. The following describes how the driving device drives the fixed frame 1 and the rotating frame 2.

For example, in some embodiments, as shown in fig. 10 and 11, the driving means may include a first driving motor 200, the first driving motor 200 being fixed on the lower side of the top plate 801 with its output shaft facing downward. The axis of the output shaft of the first driving motor 200 is collinear with the axis of the connecting rod 90, and the output shaft of the first driving motor 200 is in transmission connection with the connecting rod 90 and can drive the connecting rod 90 to rotate around the axis thereof, so that the fixed frame 1 is driven to rotate. In some embodiments, the first driving motor 200 may be replaced by other driving mechanisms, such as a hydraulic motor, and may be used as well.

In addition, in some embodiments, as shown in fig. 12, the driving device further includes a second driving motor 300, the second driving motor 300 is used for driving the rotating frame 2 to rotate around the rotation axis 24, and specifically, the second driving motor 300 is used for driving the rotating frame 2 to rotate by taking the first mounting portion 22, the second mounting portion 23 and the fixing frame 1 as an example.

As shown in fig. 12, the first mounting portion 22 is rotatably mounted in the fixing frame 1, the second mounting portion 23 is also rotatably mounted in the fixing frame 1, and the second mounting portion 23 further passes through the inner cavity of the first mounting portion 22, and the fixing frame 1, the first mounting portion 22 and the second mounting portion 23 are concentrically arranged, that is, the structural axes of the three portions are collinear, and the structural axes simultaneously form a rotation axis 24 of the first mounting portion 22 and the second mounting portion 23. How the first attaching portion 22 and the second attaching portion 23 are attached to the fixing frame 1 will be described below.

As shown in fig. 12, two first mounting seats 400 may be disposed in an inner cavity of the fixing frame 1, the two first mounting seats 400 are spaced apart from each other in an axial direction of the fixing frame 1, mounting holes coaxial with the fixing frame 1 are disposed on the two first mounting seats 400, second bearings 500 are mounted in the mounting holes, and the first mounting portion 22 is rotatably mounted on the two first mounting seats 400 around a structural axis thereof through the two second bearings 500, so as to rotatably mount in the fixing frame 1.

In addition, as shown in fig. 12, two second mounting seats 600 may also be disposed in the inner cavity of the fixing frame 1, the two second mounting seats 600 are arranged at intervals along the axial direction of the fixing frame 1, and are respectively disposed on two opposite sides of the two first mounting seats 400, the two second mounting seats 600 are provided with mounting holes coaxial with the fixing frame 1, third bearings 700 are mounted in the mounting holes, and the second mounting portion 23 is rotatably mounted on the two second mounting seats 600 around the structural axis thereof through the two third bearings 700, so as to be rotatably mounted in the fixing frame 1.

In addition, in order to drive the second mounting portion 23 to rotate, as shown in fig. 12, a driving gear 800 is fixedly mounted at one end of the second mounting portion 23, a fixed gear 900 engaged with the driving gear 800 is provided on an output shaft of the second driving motor 300, and the second driving motor 300 drives the second mounting portion 23 to rotate through the fixed gear 900 and the driving gear 800.

Based on this, in order to drive the first mounting portion 22, as shown in fig. 12, a first annular projection 1000 is provided at one end of the second mounting portion 23 close to the drive gear 800, a second annular projection 2000 is provided at an end portion of the first mounting portion 22 corresponding to the first annular projection 1000, and after the first mounting portion 22 and the second mounting portion 23 are mounted, the first annular projection 1000 and the second annular projection 2000 are attached to each other in the axial direction of the fixing frame 1.

On this basis, as shown in fig. 12, the first annular protrusion 1000 and the second annular protrusion 2000 are correspondingly provided with connecting holes extending along the axial direction of the fixing frame 1, and the connecting holes can be simultaneously inserted into the corresponding connecting holes of the first annular protrusion 1000 and the second annular protrusion 2000 through the pin shaft 3000, so that the rotation stop of the first installation part 22 and the second installation part 23 is realized, and then the second driving motor 300 can drive the second installation part 23 to rotate while driving the first installation part 22 to rotate, that is, the second driving motor 300 can drive the first installation part 22 and the second installation part 23 to synchronously rotate around the rotation axis 24.

Further, in order to prevent the pin shaft 3000 from coming out of the connecting hole during use, as shown in fig. 12, a blocking plate 30001 is disposed at one end of the pin shaft 3000, a through hole is disposed on the blocking plate 30001, a threaded hole is disposed on the first annular protrusion 1000 corresponding to the through hole, and the blocking plate 30001 is pressed and fixed on the first annular protrusion 1000 by screwing a fixing bolt 4000 into the threaded hole after passing through the through hole.

In order to facilitate the installation of the pin shaft 3000, an avoiding hole (not shown in the figure) is formed in the second installation seat 600 at a position corresponding to the connection hole in the first annular protrusion 1000, and the avoiding hole can be used for an operator to pass through to install the pin shaft 3000.

As can be seen from the above, in order to facilitate the installation of the first installation part 22 and the second installation part 23, as shown in fig. 4A, the fixing frame 1 is divided into the upper ring frame part 11 and the lower ring frame part 12 by the horizontal plane where the axis is located, and the corresponding first installation seat 400 and second installation seat 600 are also divided into the upper part and the lower part by the horizontal plane. In this case, upper portions of the first and second mounting seats 400 and 600 may be fixed to the upper ring frame portion 11, and lower portions of the first and second mounting seats 400 and 600 may be fixed to the lower ring frame portion 12.

In addition, the upper ring frame part 11 and the lower ring frame part 12 are correspondingly provided with mounting lugs 13, and the corresponding mounting lugs 13 are fixed together by a locking bolt 14 and a locking nut 15 to fix the upper ring frame part 11 and the lower ring frame part 12 together. It should be noted that, the corresponding mounting ears 13 are provided with a plurality of pairs along the axial direction of the fixing frame 1, and the two sides of the fixing frame 1 are provided with a plurality of pairs, so as to improve the fixing firmness of the upper ring frame part 11 and the lower ring frame part 12. When assembling the frame 01, the first mounting portion 22, the second mounting portion 23, the second bearing 500, and the third bearing 700 are first mounted on the ring frame lower portion 12, and then the ring frame upper portion 11 is fixed to the ring frame lower portion 12.

In some embodiments, the fixing frame 1 may not be a circular frame, as shown in fig. 13, the fixing frame 1 may be a C-shaped frame, and includes two supporting plates 16 parallel to each other and a connecting plate 17 connecting the two supporting plates 16, the two supporting plates 16 are arranged along the up-down direction, the lower supporting plate 16 is rotatably connected to the base 30, so as to realize the swing of the fixing frame 1, and the rotating frame 2 is disposed between the two supporting plates 16 and rotatably mounted on the lower supporting plate 16, which can also be used.

In some embodiments, the first mounting portion 22 may also have a separate driving mechanism, such as the first mounting portion 22 is rotatably mounted in the inner cavity of the fixing frame 1, a first power gear is provided at the end of the first mounting portion 22, and is driven by a first power motor with an output shaft provided with a matched gear, a second mounting part 23 is rotatably mounted in the inner cavity of the first mounting part 22, a second power gear is arranged at the end part of the second mounting part 23 and is driven by a second power motor with an output shaft provided with a matched gear, the second power motor is fixed in the inner cavity of the first mounting part 22, the second power motor is used only to drive the second mounting portion 23 in rotation relative to the first mounting portion 22, when the rotating frame 2 needs to rotate integrally, the second power motor stops acting, and the first power motor starts acting to drive the whole rotating frame 2 to rotate relative to the fixed frame 1.

The present disclosure also provides a radiotherapy apparatus, as shown in fig. 1, comprising the above-mentioned gantry 01 and a radiotherapy head, which is mounted on a rotating frame 2 in the gantry 01. The radiotherapy apparatus comprises the gantry 01, so that the same technical problems can be solved and the same technical effects can be achieved, and further description is omitted.

In some embodiments, as shown in fig. 14, the radiation therapy head may include a stereotactic therapy head 41 and a conformal intensity modulated therapy head 42. The stereotactic treatment head 41 and the conformal intensity-modulated treatment head 42 are arranged around the circumference of the rotating frame 2, when the radiotherapy equipment is used, an operator can select one or two of the stereotactic treatment head 41 and the conformal intensity-modulated treatment head 42 to treat the patient 5 according to the specific situation of the patient 5, so that the treatment is more targeted, the effect is better, and meanwhile, the adaptability of the radiotherapy equipment is better.

In some embodiments, the radiation therapy head may also include only one of the stereotactic therapy head 41 and the conformal intensity modulated therapy head 42, and may be used as well. Of course, the radiation therapy head can be of other types and can be used.

In some embodiments, in order to reduce the weight of the whole gantry 01 to be carried in the case where at least two different types of radiation treatment heads are required to be disposed on the rotating frame 2, as shown in fig. 4A, the rotating frame 2 includes a first mounting portion 22 and a second mounting portion 23, the first mounting portion 22 is rotatably mounted on the fixing frame 1, the first mounting portion 22 and the second mounting portion 23 are movable relative to each other, and the first mounting portion 22 and the second mounting portion 23 are also rotatable relative to the fixing frame 1 around the rotation axis 24 of the rotating frame 2. The radiation treatment head may comprise a multiplex radiation source 9, a first collimator 10 and a second collimator 20, the multiplex radiation source 9 being adapted to emit radiation, the multiplex radiation source 9 being mounted on a first mounting 22. The first collimator 10 is used for limiting the beam of rays and is arranged on the second installation part 23; the second collimator 20 is for limiting the beam of radiation and is mounted on the second mounting portion 23.

Based on this, during the movement of the first mounting part 22 relative to the second mounting part 23, the first collimator 10 and the multiplex radiation source 9 can be docked so as to form one radiation treatment head, and the second collimator 20 can be docked with the multiplex radiation source 9 so as to form another radiation treatment head. In this way, the rotating frame 2 is equivalently provided with two radiation treatment heads, but the weight carried by the rack 01 is reduced because the two radiation treatment heads share the multiplexing radiation source 9.

For example, the multiplex radiation source 9 is an X-ray source, and may be an X-ray accelerator, and the X-ray accelerator generally includes components such as an electron gun, an accelerating tube, a tungsten target, and a microwave feeding device, and since the X-ray accelerator is an existing mature technology, specific structures and working processes thereof are not described herein again.

The first collimator 10 may be a channel collimator, the channel collimator may include a plurality of beam channels with different apertures, or a single beam channel with adjustable shape and size (aperture), or may also include only one channel with nonadjustable size (aperture) and shape, the channel collimator is used to generate a single narrow X-beam, the channel collimator is a mature prior art (also called a beam limiter), and details of its structure and working process are not described herein.

The second collimator 20 is a single-layer multi-leaf collimator or a multi-layer multi-leaf collimator, the multi-leaf collimator is used to form a field with the same size as the tumor shape, and the multi-leaf collimator is a mature prior art and its specific structure and working process are not described herein again.

In some embodiments, the multiplexed radiation source 9 may also be another type of radiation source, such as a cobalt-60 radiation source, and may be used as well. The first collimator 10 and the second collimator 20 may be other collimators as long as they can form a radiation treatment head for treating the patient 5 in cooperation with the multiplex radiation source 9.

In order to make the fixing frame 1 swing, the treatment plane generated by the target ray source in the radiotherapy head still passes through the isocenter of the radiotherapy device, and the swing axis 3 of the fixing frame 1 is arranged to pass through the isocenter of the radiotherapy device. The isocenter is the intersection point of the central line of the ray beam emitted by the target ray source in the radiotherapy head and the rotation axis 24 of the rotating frame 2, the swing axis 3 is arranged to pass through the isocenter, and then after the fixing frame 1 swings, the central line of the ray beam emitted by the target ray source in the radiotherapy head still passes through the isocenter, and during normal use, the treatment couch 6 drives the patient 5 to enter the treatment cavity 21, so that the target point of the patient 5 is located at the isocenter, therefore, after the fixing frame 1 swings, the treatment couch 6 does not need to move, the ray emitted by the target ray source in the radiotherapy head can still irradiate the target point of the patient 5, and the operation difficulty and complexity of the radiotherapy equipment are reduced.

It should be noted that the target radiation source refers to a radiation source selected for treatment in the radiation treatment head during the radiation treatment process. If only one radiation source is arranged in the radiation therapy head, the radiation source is a target radiation source; if there are multiple radiation sources in the radiation therapy head, any one of the multiple radiation sources may be the target radiation source.

In some embodiments, as shown in fig. 4A, the radiation therapy apparatus further comprises an imaging device comprising an imaging source 5000 and an imager 6000, the imaging source 5000 and the imager 6000 being mounted on the gantry 2. The imaging device is used for realizing high-precision patient positioning before treatment of the patient 5 and real-time monitoring treatment in the treatment.

Illustratively, as shown in fig. 4A, the gantry 2 includes a first mount 22 and a second mount 23, the imaging source 5000 and the imager 6000 are both mounted on the second mount 23, and the imaging source 5000 and the imager 6000 are symmetrically arranged about an isocenter of the radiation therapy apparatus.

For example, the imaging source 5000 may be an X-ray tube in KV level, which can emit a cone beam, and the imager 6000 may be a flat panel detector or an arc detector, which is used for receiving the cone beam emitted from the X-ray tube and forming the shape and state of the tumor of the patient 5.

The present disclosure also provides an imaging apparatus, as shown in fig. 15, which includes the above-described gantry 01 and an imaging device, the imaging device including an imaging source 5000 and an imager 6000, the imaging source 5000 and the imager 6000 being mounted on the rotating gantry 2. It should be noted that when arranging the imaging source 5000 and the imager 6000, the imaging source 5000 and the imager 6000 should be made symmetrical about the intersection of the rotation axis 24 of the rotating frame 2 and the swing axis 3. The imaging device is used for realizing high-precision patient positioning before treatment of the patient 5 and real-time monitoring treatment in the treatment.

In the process of rotation of the imaging source 5000 along with the rotating frame 2, the area covered by the emitted rays is defined as an imaging plane, because the fixed frame 1 can swing around the swing axis 3, and the rotating frame 2 can swing around the swing axis 3 synchronously with the fixed frame 1, after the fixed frame 1 swings synchronously with the rotating frame 2, the imaging device obtains a new imaging plane, and the imaging device can image the tumor of the patient 5 from different angles.

Illustratively, as shown in fig. 4A, where the turret 2 includes a first mount 22 and a second mount 23, the imaging source 5000 and the imager 6000 are both mounted on the second mount 23.

For example, the imaging source 5000 may be an X-ray tube in KV level, which can emit a cone beam, and the imager 6000 may be a flat panel detector or an arc detector, which is used for receiving the cone beam emitted from the X-ray tube and forming the shape and state of the tumor of the patient 5.

The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art will appreciate that changes or substitutions within the technical scope of the present disclosure are included in the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims (16)

1. A rack, comprising a rack body, the rack body comprising:

the fixed frame swings around the swing axis;

the rotating frame is rotatably arranged on the fixed frame and synchronously swings around the swinging axis with the fixed frame;

wherein the rotation axis of the rotating frame intersects the swing axis.

2. The frame of claim 1, wherein the swing axis is perpendicular to a rotational axis of the rotating frame.

3. The frame according to claim 1, wherein the rotating frame comprises:

the first mounting part is rotatably mounted on the fixed frame and is used for mounting the multiplexing ray source;

a second mounting part for mounting the first collimator and the second collimator;

the first installation part and the second installation part can move relatively, and when the first collimator or the second collimator is in butt joint with the multiplexing radiation source, the first installation part and the second installation part can synchronously rotate relative to the fixed frame around the rotation axis.

4. The frame according to claim 3,

the first mounting portion rotates relative to the second mounting portion about the axis of rotation; or,

the second mounting portion rotates relative to the first mounting portion about the axis of rotation;

the first and second mounting portions rotate about the axis of rotation at different rates and/or in different directions.

5. The frame of claim 3, wherein the swivel frame further comprises a locking structure that locks the first mount and the second mount.

6. The frame according to claim 1, wherein the rotating frame and the fixed frame synchronously swing around the swing axis within a range of-40 ° to +40 °.

7. The frame according to claim 1, further comprising a base disposed at a bottom of the frame body, wherein the fixing frame is rotatably connected to the base, and the fixing frame swings around the swing axis relative to the base.

8. The frame as claimed in claim 1, further comprising a support frame rotatably connected to the fixed frame for supporting the frame body.

9. Radiotherapy installation comprising a radiotherapy head and a gantry according to any one of claims 1 to 8, characterized in that the radiotherapy head is arranged on the rotating gantry.

10. Radiotherapeutic apparatus according to claim 9 in which the radiotherapy head comprises a stereotactic treatment head and/or a conformal intensity modulated treatment head.

11. Radiotherapeutic apparatus according to claim 9, wherein, in the case where the rotating gantry comprises a first mount and the second mount, the radiotherapy head comprises:

the multiplexing ray source is used for emitting rays and is arranged on the first installation part;

the first collimator is used for limiting the beam of the rays and is arranged on the second installation part;

and the second collimator is used for limiting the beam of the rays and is arranged on the second installation part.

12. Radiotherapeutic apparatus according to claim 11 in which the first collimator is a channel collimator and the second collimator is a single or multi-leaf collimator.

13. Radiotherapeutic apparatus according to claim 11 in which the multiplex radiation source is an X-ray source.

14. Radiotherapeutic apparatus according to claim 9 wherein the axis of oscillation passes through an isocenter of the radiotherapeutic apparatus.

15. The radiation therapy apparatus of claim 9, further comprising an imaging device comprising an imaging source and an imager, said imaging source and said imager being mounted on said gantry.

16. An imaging apparatus comprising an imaging device and a gantry of any of claims 1-8, the imaging device comprising an imaging source and an imager, the imaging source and the imager being mounted on the rotating gantry.

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