WO2022170601A1

WO2022170601A1 - Frame and radiation therapy device

Info

Publication number: WO2022170601A1
Application number: PCT/CN2021/076600
Authority: WO
Inventors: 郭召
Original assignee: 西安大医集团股份有限公司
Priority date: 2021-02-10
Filing date: 2021-02-10
Publication date: 2022-08-18

Abstract

The present disclosure provides a frame and a radiation therapy device. The frame comprises a frame body and a mounting seat; the mounting seat is used for mounting a treatment head; and the mounting seat is rotatably assembled on the frame body, so that the mounting seat rotates in a direction towards the frame body and is attached to the frame body, or the mounting seat rotates in a direction away from the frame body.

Description

Racks and radiotherapy equipment

technical field

The present disclosure relates to the technical field of medical devices, and in particular, to a rack and radiotherapy equipment.

Background technique

In modern medicine, radiotherapy equipment is an important equipment for treating patients' tumors. The radiotherapy equipment includes a frame and a treatment head. The treatment head is installed on the frame. The treatment head can generate rays and irradiate the target area of the patient to kill tumor cells in the target area of the patient. The frame can drive the treatment head to rotate, thereby Rotational irradiation of the patient target area is achieved.

public content

In one aspect, a rack is provided. The rack includes a rack body and a mounting seat, the mounting seat is used for installing the treatment head, and the mounting seat is rotatably assembled on the rack body, so that the mounting seat faces toward a position close to the rack body. Rotate in the direction and fit with the rack body, or make the mounting seat rotate in a direction away from the rack body.

In some embodiments, the rack includes at least one hinge assembly, the hinge assembly is provided at one end of the mounting seat, and one end of the mounting seat is hinged with the rack body through the hinge assembly, so that the The mounting seat is rotatably assembled on the frame body.

In some embodiments, the hinge assembly includes a first hinge structure, a second hinge structure, and a hinge shaft. The first hinge structure is arranged on the mounting seat; the second hinge structure is arranged on the rack body; the hinge shaft penetrates through the first hinge structure and the second hinge structure, the The first hinge structure rotates relative to the second hinge structure through the hinge shaft, so that the mounting seat rotates relatively to the rack body through the hinge shaft.

In some embodiments, one of the first hinge structure and the second hinge structure is a connecting block with a groove, and the other is a lug adapted to the groove, and the lug is inserted into the groove. Inside the groove, the hinge shaft penetrates the groove and the lug.

In some embodiments, a first bearing is provided between the hinge shaft and the first hinge structure, or a second bearing is provided between the hinge shaft and the second hinge structure.

In some embodiments, the rack further includes threaded fasteners; the rack body is provided with a mounting surface, and the mounting seat is fitted with the rack body through the mounting surface. When the seat is located at the working position, the mounting seat is attached to the mounting surface and is fixed on the mounting surface by the threaded fastener.

In some embodiments, the rack body is provided with a plurality of support blocks corresponding to at least part of the mounting seat, and the surfaces of the support blocks opposite to the mounting seat constitute the mounting surface.

In some embodiments, where the hinge assembly includes a second hinge structure, the second hinge structure is disposed on the support block.

In some embodiments, the rack further includes a positioning pin; the mounting surface is provided with a positioning hole, the mounting seat is provided with a pin hole corresponding to the positioning hole, and the positioning pin penetrates through the positioning hole and The corresponding pin holes are positioned.

In some embodiments, the frame body includes a base and a drum rotatably mounted on the base, the mount is rotatably mounted on the drum, and the axis of rotation of the mount is parallel to the rotation of the drum axis.

In some embodiments, the frame further includes a pulling mechanism, the pulling mechanism is mounted on the frame body, and the pulling mechanism is used for pulling the mounting base to rotate.

In some embodiments, the traction mechanism includes a manual hoist, a first end of the manual hoist is connected to the frame body, and a second end of the manual hoist is connected to the mounting seat.

In some embodiments, the frame further includes a traction hinge, and the traction hinge includes a fixed seat and a connecting piece. The fixing seat is fixedly mounted on the mounting seat; one end of the connecting piece is hinged with the fixing seat, and the other end is connected with the second end of the manual hoist.

In another aspect, a radiotherapy apparatus is provided, the radiotherapy apparatus includes a treatment head and the gantry according to any one of the above embodiments, the treatment head is mounted on a mounting seat in the gantry.

Description of drawings

In order to illustrate the technical solutions in the present disclosure more clearly, the following briefly introduces the accompanying drawings that need to be used in some embodiments of the present disclosure. Obviously, the accompanying drawings in the following description are only the appendixes of some embodiments of the present disclosure. For those of ordinary skill in the art, other drawings can also be obtained from these drawings. In addition, the accompanying drawings in the following description may be regarded as schematic diagrams, and are not intended to limit the actual size of the product involved in the embodiments of the present disclosure, the actual flow of the method, the actual timing of signals, and the like.

1 is a structural diagram of a gantry (including a treatment head mounted on a mount) according to some embodiments;

FIG. 2 is another structural diagram of a frame according to some embodiments (including a treatment head mounted on a mount, the mount being in a working position);

3 is yet another structural diagram of a frame (including a treatment head mounted on a mount, the mount being in a maintenance position) according to some embodiments;

FIG. 4 is yet another structural diagram of a rack according to some embodiments;

FIG. 5 is yet another structural diagram of a rack according to some embodiments;

Figure 6 is a block diagram of a mount (including an accelerator tube assembly mounted on the mount) according to some embodiments;

7 is yet another structural diagram of a rack according to some embodiments;

8 is a cross-sectional view of a lug in a mount according to some embodiments;

9 is a structural diagram of a first bearing according to some embodiments;

Figure 10 is an installation view of the first bearing and lug according to some embodiments;

11 is a structural diagram of a hinge shaft according to some embodiments;

12 is a cross-sectional view of a lug and connection block connection, according to some embodiments;

Figure 13 is a left side view of the hinge shaft in Figure 11;

14 is yet another structural diagram of a rack according to some embodiments;

15 is yet another structural diagram of a rack according to some embodiments;

16 is a connection diagram of a manual hoist to a mount (including an accelerator tube assembly mounted on the mount) according to some embodiments;

17 is a structural diagram of a traction hinge and a lifting eye according to some embodiments;

18 is a block diagram of a traction hinge according to some embodiments.

Detailed ways

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

Unless the context otherwise requires, throughout the specification and claims, the term "comprise" and its other forms such as the third person singular "comprises" and the present participle "comprising" are used It is interpreted as the meaning of openness and inclusion, that is, "including, but not limited to". In the description of the specification, the terms "one embodiment", "some embodiments", "exemplary embodiments", "example", "specific example" example)" or "some examples" and the like are intended to indicate that a particular feature, structure, material or characteristic related to the embodiment or example is included in at least one embodiment or example of the present disclosure. The schematic representations of the above terms 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.

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

The terms "center", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", The orientation or positional relationship indicated by "outside" is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, It is constructed and operated in a particular orientation and therefore should not be construed as a limitation of the present disclosure.

It should be noted that, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal communication between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

"At least one of A, B, and C" has the same meaning as "at least one of A, B, or C", and both include the following combinations of A, B, and C: A only, B only, C only, A and B , A and C, B and C, and A, B, and C.

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

In the related art, the radiotherapy equipment includes a gantry and a treatment head, and the treatment head can rotate with the gantry. With the improvement of the precision requirements of radiotherapy, the frame is gradually developed into a roller form. In order to facilitate the maintenance of the treatment head, a maintenance hole is usually opened on the side wall of the annulus of the frame, and the operator can adjust the treatment through the maintenance hole. head for maintenance. Limited by the size of the maintenance hole and other surrounding structures, only simple maintenance can be done through the maintenance hole. For complex maintenance (such as replacing large and heavy parts in the treatment head), the treatment head still needs to be removed from the frame. However, the weight of the treatment head is very heavy, and a lifting device is required to remove it from the gantry, and the lifting device is rarely equipped in the environment where the radiotherapy equipment works, which makes the maintenance of the treatment head very difficult.

In order to solve the above problems, as shown in FIG. 1 , the present disclosure provides a rack 100 , the rack 100 may include a rack body 1 and a mounting seat 2 , the mounting seat 2 is used for mounting the treatment head 3 , and the mounting seat 2 rotates It is assembled on the rack body 1 so that the mounting seat 2 is rotated toward the direction close to the rack body 1 (for example, rotated counterclockwise in the direction of the arrow in FIG. 1 ), and fits with the rack body 1, or the mounting seat is 2 Turn away from the frame body 1 (eg, turn clockwise in the direction of the arrow in FIG. 1 ).

Based on this, when the mounting base 2 rotates in a direction close to the frame body 1 and is attached to the frame body 1, a part of the treatment head 3 mounted on the mounting base 2 can be located in the frame body 1, so that the The patient in the gantry body 1 is undergoing radiotherapy, and at this time, the mounting base 2 is in the working position as shown in FIG. 2 . It should be noted that the above working position refers to the position where the mounting base 2 is located relative to the gantry body 1 when the radiotherapy equipment using the gantry 100 performs radiotherapy. However, since the treatment head 3 is easily damaged during use, the treatment head 3 needs to be repaired. As can be seen from the above, the mounting seat 2 is rotatably assembled on the frame body 1, so the mounting seat 2 can be moved away from the frame body. 1 (for example, clockwise in the direction of the arrow in FIG. 1 ), so that the treatment head 3 is turned over to the outside of the gantry body 1 and reaches the maintenance position shown in FIG. 3 . At this time, the entire treatment head 3 It is located outside the gantry body 1 , so that the entire treatment head 3 does not need to be removed from the gantry 100 and hoisted to the outside of the gantry 100 , thereby facilitating maintenance of the treatment head 3 by maintenance personnel.

It should be noted that the present disclosure does not limit the type and structure of the treatment head 3 . Illustratively, the above-mentioned treatment head 3 can be an example of a conformal intensity modulated treatment head. In this case, as shown in FIG. 32, wherein the collimator assembly 31 and the acceleration tube assembly 32 are installed on the opposite sides of the mounting seat 2, in this case, when the mounting seat 2 is in the working position, the collimator assembly 31 is in the frame body 1 inside. Alternatively, when the grating collimator 31 is damaged and needs to be repaired, as can be seen from the above, the mounting base 2 can be rotated in a direction away from the frame body 1, so that the collimator assembly 31 is located outside the frame body 1, In this way, the collimator assembly 31 can be repaired without removing the entire treatment head 3 from the gantry 100 and hoisting it to the outside of the gantry 100 , which is very convenient.

In some embodiments of the present disclosure, in order to realize the rotational connection between the mounting base 2 and the rack body 1 , as shown in FIG. 5 , the rack 100 may further include at least one hinge assembly 4 (two hinge assemblies in FIG. 5 ) 4 for example), one end of the mounting seat 2 is hinged with the rack body 1 through the hinge assembly 4 , so that the mounting seat 2 is rotatably assembled on the rack body 1 . Based on this, the hinge axis of the hinge assembly 4 is the rotation axis of the mount 2 . When the treatment head 3 needs to be repaired, the mount 2 swings away from the frame body 1 around the hinge axis of the hinge assembly 4 .

The above description is based on the example that the number of hinge assemblies 4 is two. In some embodiments, the number of hinge assemblies 4 can also be other numbers, such as one, three, four or more, all of which can be used , the present disclosure does not limit the number of hinge assemblies 4 .

In addition, the above description is given by taking an example of one end of the mounting base 2 being hinged with the rack body 1 through the hinge assembly 4 . In some embodiments, the rotation axis of the mounting seat 2 may also be located in the middle region of the mounting seat 2 , for example, the middle region of the mounting seat 2 is hinged with the rack body 1 through the hinge assembly 4 .

Based on this, one end of the mounting base 2 is hinged with the frame body 1 through the hinge assembly 4, compared with the scheme of hingedly connecting the middle area of the mounting base 2 with the frame body 1, when the mounting base 2 drives the treatment head 3 completely After the frame body 1 is turned out, the area of the mounting seat 2 for carrying the treatment head 3 is larger, which can make the treatment head 3 farther away from the frame body 1 , making the maintenance of the treatment head 3 more convenient. Of course, in the case of limited maintenance space, a solution of hingedly connecting the middle area of the mounting base 2 with the rack body 1 can be selected. After the mounting base 2 drives the treatment head 3 to turn out of the frame body 1 completely, the area of the mounting base 2 for carrying the treatment head 3 is smaller, which can make the distance between the treatment head 3 and the frame body 1 also closer. Conducive to reducing maintenance space.

The structure of the above-mentioned hinge assembly 4 will be exemplified below. In some embodiments of the present disclosure, as shown in FIG. 5 , the above-mentioned hinge assembly 4 may include a first hinge structure 41 , a second hinge structure 42 and a hinge shaft 43 . The first hinge structure 41 is provided on the mounting base 2 , the second hinge structure 42 is provided on the rack body 1 , and the hinge shaft 43 penetrates through the first hinge structure 41 and the second hinge structure 42 . The first hinge structure 41 rotates relative to the second hinge structure 42 through the hinge shaft 43 , so that the mounting base 2 rotates relative to the rack body 1 through the hinge shaft 43 .

Based on this, for example, one of the first hinge structure 41 and the second hinge structure 42 may be a connecting block with a groove, and the other may be a lug fitted with the groove, the lug is inserted into the groove, and the hinged The shaft 43 penetrates the groove and the lug.

It should be noted that, in the embodiments of the present disclosure, whether the lug is the first hinge structure 41 or the second hinge structure 42 and whether the connecting block is the first hinge structure 41 or the second hinge structure 42 is not limited. For example, as shown in FIGS. 5-7 , the first hinge structure 41 may be a lug 44 provided on the mounting base 2 , and the second hinge structure 42 may be a groove 451 provided on the rack body 1 . Connect block 45. The lugs 44 are inserted into the grooves 451 , and are hinged through the groove walls of the grooves 451 and the hinge shafts 43 of the lugs 44 , so that the mounting base 2 is rotatably assembled on the rack body 1 .

In some embodiments, the mounting base 2 and the rack body 1 can also be hinged together through one or more hinges, which can also be used; of course, in the case of multiple hinges, the The axes of rotation should be collinear.

In addition, in order to facilitate the installation of the hinge shaft 43 and prevent the hinge shaft 43 from falling out during the rotation of the mounting base 2 relative to the rack body 1 after installation, the hinge shaft 43 can be fixed to the first hinge structure 41 or the second hinge structure 42 installed together. On this basis, in order to reduce the rotational friction between the mounting base 2 and the frame body 1, as shown in FIG. 12 , a first bearing 46 (in FIG. The lug 44 is the first hinge structure 41 ), or a second bearing may be provided between the hinge shaft 43 and the second hinge structure 42 . Specifically, when the hinge shaft 43 and the second hinge structure 42 are fixed, the first bearing 46 is arranged between the hinge shaft 43 and the first hinge structure 41 , and when the hinge shaft 43 and the first hinge structure 41 are fixed , a second bearing is provided between the hinge shaft 43 and the second hinge structure 42 .

Taking the hinge shaft 43 fixedly connected to the connecting block 45 and the first bearing 46 disposed between the hinge shaft 43 and the lug 44 as an example, the matching relationship between the lug 44, the connecting block 45 and the hinge shaft 43 will be described. , for the convenience of description, it is defined that the rotation axis of the mounting base 2 extends along the X direction shown in FIG. 7 .

For example, as shown in FIG. 7 , in the X direction, the groove walls of the two grooves 451 close to each other are provided with a first installation hole 452 penetrating the connecting block 45 along the X direction, and in addition, the grooves of the two grooves 451 are far away from each other A second mounting hole 453 is provided on the wall, the first mounting hole 452 and the second mounting hole 453 are coaxial and the axis extends along the X direction.

In some embodiments of the present application, as shown in FIG. 6 , two lugs 44 are provided with shaft holes 441 penetrating along the X direction, and the shaft holes 441 on the two lugs 44 are coaxial. In addition, as shown in FIG. 8 , the shaft hole 441 is a stepped hole, including a large-diameter section 4411 and a small-diameter section 4412 , and a first stepped surface 4413 is formed at the adjoining position of the large-diameter section 4411 and the small-diameter section 4412 of the shaft hole 441 . The large diameter sections 4411 of 441 are close to each other, and the small diameter sections 4412 are far away from each other.

As shown in FIG. 6 , a first bearing 46 may be installed in each of the two shaft holes 441 . For example, the first bearing 46 may be a sliding bearing. As shown in FIG. 9, the first bearing 46 is in the shape of a stepped cylinder, the first bearing 46 includes a large neck 461 and a small neck 462, and a second stepped surface 463 is formed at the adjoining part of the large neck 461 and the small neck 462; The inner cavity of a bearing 46 is in the shape of a stepped hole, including a first hole section 464 with a larger diameter and a second hole section 465 with a smaller diameter, and a third step is formed at the adjoining position of the first hole section 464 and the second hole section 465 Face 466.

As shown in FIGS. 8-10 , after the first bearing 46 is installed in the shaft hole 441 , the outer peripheral surface of the large neck 461 of the first bearing 46 is in contact with the hole wall surface of the large diameter section 4411 of the shaft hole 441 . The outer peripheral surface of the small neck 462 of the bearing 46 is in contact with the hole wall surface of the small diameter section 4412 of the shaft hole 441, and the second stepped surface 463 on the first bearing 46 is in contact with the first stepped surface 4413 in the shaft hole 441. The end face of the neck 461 away from the small neck 462 is coplanar with the hole of the large diameter section 4411 away from the small diameter section 4412 .

As shown in FIG. 11 , the hinge shaft 43 is a three-stage stepped shaft, including a first shaft section 431 , a second shaft section 432 and a third shaft section 433 whose diameters decrease in sequence, and the first shaft section 431 and the second shaft section 432 A fourth step surface 434 is formed at the adjoining place of the second shaft segment 432 and the third shaft segment 433, a fifth step surface 435 is formed; the end of the first shaft segment 431 away from the third shaft segment 433 is provided with a baffle plate 436 , the baffle plate 436 is circular, and the diameter of the baffle plate 436 is larger than the diameter of the first shaft segment 431 .

As shown in FIG. 12 , the hinge shaft 43 sequentially passes through the first mounting hole 452 of the connecting block 45 , the shaft hole 441 on the lug 44 (while passing through the first bearing 46 ) and the second mounting hole 453 on the connecting block 45 . And realize the connection between the lug 44 and the connection block 45 . In order to make the hinge shaft 43 fit with the first installation hole 452 and the second installation hole 453 on the connection block 45 , the diameter of the first installation hole 452 is set to be larger than the diameter of the second installation hole 453 . The outer peripheral surface of the shaft section 431 is in contact with the hole wall surface of the first mounting hole 452 , the outer peripheral surface of the second shaft section 432 is in contact with the hole wall surface of the first hole section 464 of the first bearing 46 , and the third shaft section 433 is also in contact with the hole wall surface. The hole wall surface of the second hole segment 465 of the first bearing 46 and the hole wall surface of the second mounting hole 453 are in contact with each other (the inner diameter of the second hole segment 465 of the first bearing 46 and the second mounting hole 453 are equal), and the baffle plate 436 faces the The end face of a shaft section 431 is fitted with the hole edge of the first mounting hole 452 facing away from the corresponding groove 451, the fourth stepped face 434 is fitted with the end face of the large neck 461 on the first bearing 46 away from the small neck 462, The five-step surface 435 is in contact with the third-step surface 466 . In this way, the lug 44 can rotate relative to the connecting block 45 around the hinge shaft 43 , thereby enabling the mounting base 2 to rotate relative to the rack body 1 .

In addition, in order to prevent the hinge shaft 43 from falling off during the rotation of the mounting base 2 relative to the frame body 1, as shown in FIG. 4361, the four connecting holes 4361 are evenly distributed along the circumferential direction of the baffle plate 436, and four threaded holes are provided on the connecting block 45 corresponding to the four connecting holes 4361 on the baffle plate 436. As shown in FIG. 12 , after the hinge shaft 43 is installed, the four connecting holes 4361 on the baffle plate 436 are coaxially corresponding to the four threaded holes on the connecting block 45 , and then the four fixing bolts 47 pass through the connecting holes 4361 Screw it into the threaded hole to realize the fixed connection between the hinge shaft 43 and the connection block 45 .

The above description is given by taking an example that the first bearing 46 is a sliding bearing. In some implementations, the above-mentioned first bearing 46 can also be replaced by a rotating bearing. In addition, when the hinge shaft 43 is fixed to the first hinge structure 41 and a second bearing is arranged between the hinge shaft 43 and the second hinge structure 42 , the setting method of the second bearing is the same as that of the first bearing 46 . It is reasonable and will not be repeated here.

In addition, in some embodiments, in order to ensure that the mounting base 2 can be fixed together with the frame body 1 when the mounting base 2 is in the working position, as shown in FIG. 1 and FIG. 2 , the frame 100 further includes threaded fasteners 5, The rack body 1 is provided with a mounting surface 11 , and the mounting seat 2 is attached to the rack body 1 through the mounting surface 11 , and is fixed on the mounting surface 11 by threaded fasteners 5 . In this way, when the mounting base 2 is rotated to the working position, the mounting base 2 can be fixed on the rack body 1 through the threaded fasteners 5 , thereby ensuring the normal operation of the rack 100 .

Alternatively, in other embodiments, the mounting base 2 can also be fixed to the rack body 1 in other ways, such as setting two manipulators on the rack body 1. When the mounting base 2 rotates to the working position, the two One manipulator presses the mounting base 2 on the mounting surface 11 of the rack body 1 . When the mounting base 2 needs to be rotated to the maintenance position, the two manipulators release the mounting base 2 , and the same can be used.

The setting method of the mounting surface 11 will be described below. In some embodiments of the present disclosure, as shown in FIG. 5 , at least part of the rack body 1 corresponding to the mounting base 2 is provided with a plurality of support blocks 12 ( FIG. 5 shows four support blocks 12 ). a support block 12 as an example). In this way, the surface of the support block 12 opposite to the mounting seat 2 can constitute the mounting surface 11 .

It should be noted that the surface of the support block 12 facing the mounting seat 2 here refers to the surface of the support block 12 facing the mounting seat 2 when the mounting seat 2 is in the working position. In addition, the number of the support blocks 12 is not limited, and may also be two, three, five or more, all of which can be used.

In some embodiments, the mounting surface can also be formed in other ways, such as setting a mounting plate on the frame body, and opening a mounting opening on the mounting plate into which part of the structure of the treatment head extends, and when the mounting seat is at the working position , the mounting seat can be attached to the mounting plate, and the surface of the mounting plate that is attached to the mounting seat is the mounting surface.

The fixed connection between the mounting base 2 and the rack body 1 will be described in detail below by taking the threaded fastener 5 as the fastening bolt and the mounting surface 11 formed by the support block 12 as an example. As shown in FIG. 5 , each of the support surfaces 11 formed by the four support blocks 12 is provided with a threaded connection hole 121 . As shown in FIG. 6 , the mounting seat 2 corresponds to the four threaded connection holes 121 on the support block 12 . Four through holes 21 are provided, and the through holes 21 penetrate through the mounting seat 2. When the mounting seat 2 is in the working position, the mounting seat 2 is fitted with the mounting surface 11, and the through holes 21 are coaxial with the corresponding threaded connection holes 121. (not shown in the figure) after passing through the through hole 21 and then screwing it into the threaded connection hole 121, the mounting seat 2 can be pressed and fixed on the mounting surface 11, that is, the mounting seat 2 can be fixed on the rack body 1.

Of course, in some embodiments, the threaded fastener can also be a screw, or other structures, such as including a limit portion and a threaded rod disposed on the limit portion. When in use, the threaded rod is screwed into the thread through the hole In the connecting hole, the limiting part is engaged with the mounting seat at the side of the mounting seat away from the frame body, so as to press the mounting seat against the mounting surface, which can also be used.

On this basis, in order to simplify the structure of the rack body 1 , the second hinge structure 42 can be provided on the support block 12 . Exemplarily, as shown in FIGS. 5 and 7 , the two second hinge structures 42 (that is, the two connecting blocks 45 in FIG. 7 ) are respectively a part of the two supporting blocks 12 . When the frame body 1 is used, the connection block 45 and the support block 12 for opening the groove 451 do not need to be separately provided, and the groove 451 can be directly opened on the support block 12, which greatly reduces the processing difficulty. Of course, in some embodiments, the connecting block can also be provided separately from the supporting block, which can also be used.

In the case where the mounting seat 2 is pressed and fixed on the mounting surface 11 by tightening bolts, in order to ensure that when the mounting seat 2 is attached to the mounting surface 11 , the through holes 21 on the mounting seat 2 can be connected with the threads on the support block 12 The holes 121 are coaxial, and the rack 100 also includes positioning pins. The mounting surface 11 is provided with positioning holes 122 as shown in FIG. 5 , and the mounting base 2 is provided with pin holes 22 as shown in FIG. 6 corresponding to the positioning holes 122 . When the 2 is in the working position, the pin hole 22 is coaxial with the corresponding positioning hole 122, and the positioning pin is inserted into the pin hole 22 and the corresponding positioning hole 122 to realize the positioning of the mounting seat 2 and the rack body 1.

In some embodiments of the present disclosure, as shown in FIG. 4 , the frame body 1 may further include a base 13 and a drum 14 rotatably assembled on the base 13 , and the mounting base 2 is rotatably assembled on the drum 14 ; as shown in FIG. 3 , The axis of rotation 23 of the mount 2 is parallel to the axis of rotation 141 of the drum 14 . The stability of the drum 14 is high, so that the treatment precision of the radiotherapy equipment using the gantry 100 is high. If the rotation axis 23 of the mounting seat 2 is set to be parallel to the rotation axis 141 of the drum 14, when the treatment head 3 needs to be repaired, the drum 14 can be rotated so that the mounting seat 2 and the rotation axis 141 of the drum 14 are approximately in the same horizontal plane, And the rotation axis 23 of the mounting seat 2 is located on the lower side of the mounting seat 2, and then the mounting seat 2 is turned over, the collimator assembly 31 can be turned from the inside of the drum 14 to the outside of the drum 14, and the mounting seat 2 can be installed and aligned The side of the collimator assembly 31 faces upwards, so that it is convenient for the operator to maintain the collimator assembly 31 . Of course, in some embodiments, the rotation axis of the mounting seat may not be parallel to the rotation axis of the drum, for example, the rotation axis of the mounting seat extends along the tangential direction of the drum, as long as the mounting seat can be turned over and extended into the frame body The inner treatment head can be turned over to the outside of the frame body.

Based on this, as shown in FIG. 4 , one end of the drum 14 in the X direction is fixedly connected with a first gear 15 , the first gear 15 is coaxially arranged with the drum 14 , and a drive motor 16 is installed on the base 13 . A second gear 17 that can mesh with the first gear 15 is installed on the output shaft, and the driving motor 16 drives the drum 14 to rotate relative to the base 13 through the first gear 15 and the second gear 17 .

Of course, in some embodiments, the roller can also be replaced by a C-shaped frame, which can also be used. The C-shaped frame is a relatively common structure in the field of radiotherapy, and will not be repeated here.

In addition, in order to facilitate the overturning of the mounting base 2 , in some embodiments of the present disclosure, the rack 100 further includes a traction mechanism, the traction mechanism is installed on the rack body 1 , and the traction mechanism is used to pull the mounting base 2 to rotate.

In the embodiment of the present disclosure, the specific type of the traction mechanism is not limited. Exemplarily, as shown in FIG. 14 , the traction mechanism may include a manual hoist 6, and the first end of the manual hoist 6 is connected to the frame body 1. The second end of the manual hoist 6 is connected with the mounting seat 2 . Of course, in some embodiments, the traction mechanism can also be of other types, such as a hydraulic cylinder. One end of the hydraulic cylinder is hinged with the frame body, and the other end is hinged with the mounting seat, which can also drive the mounting seat toward a position close to the frame body. When the mounting seat is rotated in the direction away from the frame body, the mounting seat is pulled; the traction mechanism can also be a hoist, which can also be used.

As shown in FIGS. 4 and 14 , taking the case where the above-mentioned mounting seat 2 and the rotation axis 141 of the drum 14 are approximately in the same horizontal plane as an example, remove the fastening bolts used to fix the mounting seat 2 and the frame body 1, and install The seat 2 will turn outwards around its rotation axis under the action of its own gravity and the gravity of the treatment head 3. At the same time, under the pulling action of the manual hoist 6, the mounting seat 2 can be gradually turned outward until the collimator is installed on the mounting seat 2. When the side of the assembly 31 faces upward, the manual hoist 6 is used to pull the mounting base 2 to keep the side of the collimator assembly 31 facing upward, and then the maintenance of the collimator assembly 31 can be started. After the maintenance is completed, the manual hoist 6 can overcome the gravitational effect of the mounting seat 2 and the treatment head 3, and pull the mounting seat 2 to rotate to the working position. When the mounting seat 2 is rotated to the working position, the mounting seat 2 is re-fixed with the fastening bolts Just on the mounting surface 11 .

On this basis, the frame body 1 needs to be provided with a support frame for connecting the manual hoist 6 . Specifically, as shown in FIG. 15 , the base 13 has a support wall 131 , the end of the drum 14 where the first gear 15 is disposed is rotatably supported on the support wall 131 , and the end of the drum 14 away from the first gear 15 in the X direction has a support wall 131 . The circular turntable 141, the axis of the circular turntable 141 and the axis of the drum 14 are collinear. The support frame 7 includes a tripod 71 detachably fixed on the circular turntable 141 and a support plate 72 .

Wherein, the tripod 71 is in the shape of a right-angled triangle, a right-angled side of the tripod 71 extends horizontally, and the right angle of the tripod 71 is located on the upper side of one of the acute angles. coplanar. One end of the support plate 72 is overlapped on the side of the horizontally extending right-angle side of the tripod 71 and is fixedly connected by bolts, and the other end of the support plate 72 is overlapped on the top surface of the support wall 131 and connected by bolts. After the tripod 71 is fixed on the circular turntable 141 , its horizontally extending right-angled side extends to the outside of the circular turntable 141 in the radial direction of the circular turntable 141 . The radial direction of the round turntable 141 extends to the outer side of the circular turntable 141 , so that the support plate 72 is installed to overhang the outer side of the drum 14 .

As shown in FIG. 14 , the lower side of the support plate 72 is provided with a hook (not shown) for hooking the first end of the manual hoist 6 , and the second end of the manual hoist 6 is connected to the mounting seat 2 . The manual hoist 6 is a mature traction mechanism, and its structure and usage principle will not be repeated here.

In order to facilitate the connection between the manual hoist 6 and the mounting seat 2, as shown in FIG. 16, the frame further includes a traction hinge 8, and the traction hinge 8 includes a fixing seat 81 and a connecting piece 82, and the fixing seat 81 is fixedly installed on the mounting seat 2; One end of the connecting piece 82 is hinged with the fixing base 81 , and the other end is connected with the second end of the manual hoist 6 . The provision of the traction hinge 8 can facilitate the connection between the manual hoist 6 and the mounting base 2 , and also simplify the structure of the mounting base 2 , that is, the mounting base 2 does not need to be provided with a structure for connecting with the manual hoist 6 .

Specifically, as shown in FIG. 17 , the fixed seat 81 includes a fixed plate 811 and a fixed block 812 , the fixed block 812 is in the shape of a cuboid, the fixed plate 811 is integrally formed on one side of the fixed block 812 in the height direction, and the fixed plate 811 One end in the length direction of the fixed block 812; in the width direction of the fixed block 812, both ends of the fixed plate 811 protrude out of the fixed block 812 to form two protruding parts 8111, and bolts are provided on the protruding parts 8111 Perforation 8112.

The side surface on which the accelerator tube assembly 32 is installed on the mounting seat 2 is defined as the first side surface, and the end on which the two lugs 44 are arranged on the mounting seat 2 is defined as the hinge end.

As shown in FIG. 16 , the traction hinge 8 is fixed on the first side surface of the mounting base 2 through two protruding parts 8111 and is located at one end away from the hinge end. The bolt holes 8112 on the first side surface corresponding to the protruding parts 8111 are provided with Threaded blind holes (not shown in the figure), the traction hinge 8 is fixed on the mounting seat 2 through the matching bolts passing through the bolt holes 8112 and then screwing them into the threaded blind holes. The fixed position of the traction hinge 8 is located in the central area of the mounting seat 2 in the X direction, and after the traction hinge 8 is fixed, the end of the fixing block 812 away from the fixing plate 811 is suspended outside the mounting seat 2 .

As shown in FIG. 17 and FIG. 18 , one end of the fixing block 812 away from the fixing plate 811 is provided with an installation groove 8121 , the installation groove 8121 penetrates the fixing block 812 in the height direction of the fixing block 812 , and is fixed on the two groove walls of the installation groove 8121 . A fixed shaft 83 is installed, the fixed shaft 83 passes through the installation groove 8121, and the connecting piece 82 is rotatably assembled on the shaft section of the fixed shaft 83 located in the installation groove 8121, so as to realize the rotation relative to the fixed seat 81, and the connecting piece 82 is connected with the fixed shaft 82. The connection form between the shafts 83 is a spherical hinge connection, and the spherical hinge connection is a common connection form, which will not be repeated here.

As shown in FIG. 18 , a screw mounting hole 821 is provided at one end of the connecting member 82 away from the fixed shaft 83 , and the axis of the screw mounting hole 821 is perpendicular to the axis of the fixed shaft 83 . As shown in FIG. 17 , a lifting ring 84 is installed at the end of the connecting piece 82 away from the fixed shaft 83 . The lifting ring 84 is provided with a lifting ring through hole. The connection between the lifting ring 84 and the connecting piece 82 is realized internally. It should be noted that the lifting ring bolt 85 does not press the lifting ring 84 on the connecting piece 82 , that is, the lifting ring 84 can rotate relative to the connecting piece 82 around the axis of the lifting ring bolt 85 .

As shown in FIG. 16 , the end of the manual hoist 6 away from the support frame 7 is hooked on the lifting ring 84 to realize the connection with the traction hinge 8 , and then realize the connection with the mounting base 2 .

As shown in FIG. 17 , in order to enhance the structural strength of the traction hinge 8 , one end of the fixing plate 811 close to the fixing shaft 83 is provided with a flange 8113 extending away from the fixing block 812 . As shown in FIG. 16 , after the traction hinge 8 is installed on the mounting seat 2 , the flange 8113 is in contact with the end surface of the mounting seat 2 away from the hinged end.

It should be noted that when the mounting base 2 needs to be turned over, the manual hoist 6, the support frame 7 and the traction hinge 8 are installed in place. When the mounting base 2 is fixed with the frame body 1, the manual hoist 6, the support frame 7 and the traction hinge The hinge 8 is removed so as not to interfere with the rotation of the drum 14 .

Some embodiments of the present disclosure also provide a radiotherapy device, the radiotherapy device includes a gantry and a treatment head, the gantry is the same as the gantry in the above-mentioned embodiments, and details are not repeated here, and the treatment head is installed in the on the mount in the rack.

The above are only specific embodiments of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical scope disclosed in the present disclosure, think of changes or replacements, should cover within the scope of protection of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

A rack including:

Rack body;

an installation seat for installing the treatment head, the installation seat is rotatably assembled on the frame body, so that the installation seat rotates in a direction close to the frame body and fits with the frame body, Or the mounting seat is rotated in a direction away from the rack body.
The rack according to claim 1, wherein the rack comprises at least one hinge assembly, and one end of the mounting seat is hinged with the rack body through the hinge assembly, so that the mounting seat is rotatably assembled on the rack body. on the frame body.
The rack of claim 2, wherein the hinge assembly comprises:

a first hinge structure, arranged on the mounting seat;

The second hinge structure is arranged on the frame body;

A hinge shaft passes through the first hinge structure and the second hinge structure, the first hinge structure rotates relative to the second hinge structure through the hinge shaft, so that the mounting seat passes through the hinge shaft relative to the frame body.
The rack according to claim 3, wherein one of the first hinge structure and the second hinge structure is a connecting block with a groove, and the other is a lug adapted to the groove, The lug is inserted into the groove, and the hinge shaft passes through the groove and the lug.
The rack according to claim 3 or 4, wherein a first bearing is provided between the hinge shaft and the first hinge structure, or a first bearing is provided between the hinge shaft and the second hinge structure second bearing.
The frame of any of claims 1-5, wherein the frame further comprises threaded fasteners;

The rack body is provided with a mounting surface, the mounting seat is attached to the rack body through the mounting surface, and is fixed on the mounting surface by the threaded fastener.
The rack according to claim 6, wherein at least part of the rack body is provided with a plurality of support blocks corresponding to the mounting seat, and a surface of the support blocks opposite to the mounting seat constitutes the mounting surface .
The rack of claim 7, wherein in the case where the hinge assembly includes a second hinge structure, the second hinge structure is provided on the support block.
The frame of any one of claims 6-8, wherein the frame further comprises locating pins;

The mounting surface is provided with a positioning hole, the mounting seat is provided with a pin hole corresponding to the positioning hole, and the positioning pin penetrates the positioning hole and the corresponding pin hole for positioning.
The frame according to any one of claims 1-9, wherein the frame body comprises a base and a drum rotatably mounted on the base, the mounting seat is rotatably assembled on the drum, the The axis of rotation of the mount is parallel to the axis of rotation of the drum.
The frame according to any one of claims 1-10, wherein the frame further comprises a pulling mechanism, the pulling mechanism is mounted on the frame body, and the pulling mechanism is used for pulling the installation Seat turns.
The frame of claim 11, wherein the traction mechanism comprises a manual hoist, a first end of the manual hoist is connected to the frame body, and a second end of the manual hoist is connected to the mounting seat connected.
13. The frame of claim 12, wherein the frame further comprises a traction hinge comprising:

a fixing seat, fixedly mounted on the mounting seat;

One end of the connecting piece is hinged with the fixed seat, and the other end is connected with the second end of the manual hoist.
A radiotherapy apparatus comprising a treatment head and a gantry according to any one of claims 1-13, the treatment head being mounted on a mounting seat in the gantry.