CN116685269A - Radiotherapy system - Google Patents
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- CN116685269A CN116685269A CN202080108246.4A CN202080108246A CN116685269A CN 116685269 A CN116685269 A CN 116685269A CN 202080108246 A CN202080108246 A CN 202080108246A CN 116685269 A CN116685269 A CN 116685269A
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- 238000001959 radiotherapy Methods 0.000 title claims abstract description 62
- 230000007246 mechanism Effects 0.000 claims abstract description 457
- 230000005540 biological transmission Effects 0.000 claims abstract description 107
- 238000006243 chemical reaction Methods 0.000 claims abstract description 34
- 208000032370 Secondary transmission Diseases 0.000 claims description 59
- 208000032369 Primary transmission Diseases 0.000 claims description 26
- 238000001514 detection method Methods 0.000 claims description 24
- 239000003638 chemical reducing agent Substances 0.000 claims description 22
- 230000005855 radiation Effects 0.000 abstract description 9
- 201000010099 disease Diseases 0.000 abstract description 5
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 18
- 230000008569 process Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 206010028980 Neoplasm Diseases 0.000 description 4
- 230000003902 lesion Effects 0.000 description 4
- 230000007306 turnover Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000001960 triggered effect Effects 0.000 description 3
- 206010028851 Necrosis Diseases 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000017074 necrotic cell death Effects 0.000 description 2
- 230000002285 radioactive effect Effects 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 210000000746 body region Anatomy 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
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Abstract
A radiotherapy system. Comprising the following steps: a conversion mechanism, a frame (1) and a source mechanism (2); the conversion mechanism sets up on frame (1), and the conversion mechanism includes: a driving mechanism (3) and a transmission mechanism (4); the transmission mechanism (4) is connected with the source mechanism (2) to drive the source mechanism (2) to switch between different working positions under the drive of the driving mechanism (3), wherein the beam emitted by the source mechanism (2) is different in beam direction at the different working positions. The conversion mechanism in the radiotherapy system is arranged on the stand (1), and the radiation source mechanism (2) can be converted between different working positions under the drive of the conversion mechanism, so that rays generated by the radiation source mechanism (2) can be focused on different focuses according to actual needs to treat diseases, and the treatment range of the radiotherapy system is enlarged.
Description
The embodiment of the application relates to the technical field of radiotherapy, in particular to a radiotherapy system.
Radiotherapy is one of the main means of cancer treatment at present, and the main principle is as follows: the radiation generated by the radiation source mechanism of the radiotherapy equipment is focused on a lesion area (target spot) so that the lesion area generates focal necrosis or functional change to achieve the purpose of treating diseases.
At present, a radiation source mechanism in the radiotherapy equipment is fixed on a rack of the equipment, and rays generated by the radiation source mechanism can only be focused on a certain fixed focus, so that the treatment range of the equipment is smaller.
Disclosure of Invention
The application aims to provide a radiotherapy system which is used for overturning a source mechanism in the radiotherapy system and expanding the treatment range of the radiotherapy system.
An embodiment of the present application provides a radiotherapy system, including: the device comprises a conversion mechanism, a rack and a source mechanism; the conversion mechanism sets up in the frame, the conversion mechanism includes: a driving mechanism and a transmission mechanism; the transmission mechanism is connected with the source mechanism so as to drive the source mechanism to switch between different working positions under the drive of the driving mechanism, wherein the beam emitted by the source mechanism is different in beam directions of different working positions.
In one embodiment, the transmission mechanism comprises at least a primary transmission assembly and a secondary transmission assembly; the primary transmission assembly is connected with the driving mechanism respectively, and the secondary transmission assembly is connected with the source mechanism; the driving mechanism drives the primary transmission assembly, the primary transmission assembly drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism to switch between different working positions.
In one embodiment, the primary transmission assembly and/or the secondary transmission assembly is one of a sliding transmission mechanism, a connecting rod transmission mechanism, a gear transmission mechanism and a transmission belt mechanism.
In one embodiment, the primary drive assembly includes: slide rail and slider; the sliding rail is arranged on the cross beam of the frame, and the sliding block is arranged on the sliding rail; the secondary transmission assembly is respectively connected with the sliding block and the source mechanism; the driving mechanism drives the sliding block to move along the sliding rail, the sliding block drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism to switch between different working positions.
In one embodiment, the secondary drive assembly includes a connecting rod; one end of the connecting rod is rotationally connected with the sliding block, and the other end of the connecting rod is rotationally connected with the edge of the source mechanism; the slide block drives the connecting rod, and the connecting rod drives the source mechanism to switch between different working positions.
In one embodiment, the transmission mechanism is arranged on two opposite cross beams of the frame.
In one embodiment, any one of the two transmission mechanisms is provided with a screw rod, and the screw rod passes through the sliding block and is arranged on the sliding rail; the driving mechanism drives the screw rod, and the screw rod drives the sliding block to move along the sliding rail.
In one embodiment, the primary drive assembly includes a first gear; the first gear is connected with the driving mechanism in a rotating way, the first gear is connected with the secondary transmission assembly in a meshed way, the driving mechanism drives the first gear to rotate, and the first gear drives the secondary transmission assembly so that the secondary transmission assembly drives the power source mechanism to convert among different working positions.
In one embodiment, the secondary drive assembly includes a second gear; the second gear is fixedly connected with the rotating shaft of the source mechanism, the second gear is connected with the first gear in an external meshing mode, the first gear drives the second gear to rotate, and the second gear drives the source mechanism to switch between different working positions.
In one embodiment, the secondary drive assembly comprises a chain; the chain is connected with the first gear in a meshed manner, two ends of the chain are respectively connected with edges of two ends of the power source mechanism, the first gear drives the chain to move, and the chain drives the power source mechanism to switch between different working positions.
In one embodiment, the drive mechanism includes: a motor; the motor is fixed on a cross beam of the frame; the motor drives the transmission mechanism so that the transmission mechanism drives the source mechanism to switch between different working positions.
In one embodiment, the drive mechanism further comprises: a speed reducer; the input shaft of the speed reducer is connected with the output shaft of the motor, the output shaft of the speed reducer is connected with the transmission mechanism, and the speed reducer drives the transmission mechanism so that the transmission mechanism drives the source mechanism to switch between different working positions.
In one embodiment, the source mechanism is disposed on the frame, the driving mechanism is fixed on the frame, and the transmission mechanism is connected with the driving mechanism and the source mechanism respectively.
In one embodiment, the source mechanism is disposed on the conversion mechanism.
In one embodiment, the source mechanism may be translatable and/or liftable on a gantry.
In one embodiment, the radiotherapy system further comprises a position detection mechanism; the position detection mechanism is used for detecting the position of the source mechanism.
In one embodiment, the radiotherapy system further comprises a locking mechanism; when the position detection mechanism detects that the source mechanism is switched to a specified position, a locking instruction is sent to the locking mechanism; the locking mechanism locks the source mechanism to the designated position according to the locking instruction.
In the embodiment of the application, the conversion mechanism in the radiotherapy system is arranged on the stand, and the source mechanism can be converted between different working positions under the drive of the conversion mechanism, so that rays generated by the source mechanism can be focused at different focuses according to actual needs to treat diseases, and the treatment range of the radiotherapy system is enlarged.
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a radiotherapy system according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of another radiotherapy system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of another radiotherapy system according to an embodiment of the present application.
Description of the reference numerals
1. Rack 2 and source mechanism
3. Drive mechanism 4 and transmission mechanism
41. Slide rail 42, slide block
43. Connecting rod 44, screw rod
45. First gear 46, second gear
47. Chain
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this specification and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items.
It should be understood that the terms first, second and the like used in the description and the claims do not denote any order, quantity or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. Unless otherwise indicated, the terms "front," "rear," "lower," and/or "upper" and the like are merely for convenience of description and are not limited to one location or one spatial orientation. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.
The radiotherapy apparatus generally comprises a frame and a source mechanism arranged on the frame, wherein an active box is arranged in the source mechanism, and a radioactive source is arranged in the active box. The radiotherapy equipment mainly focuses the rays generated by a radioactive source on a lesion area to cause focal necrosis or functional change of the lesion area so as to achieve the purpose of treating diseases.
In conventional radiotherapy equipment, a radiation source mechanism is fixed on a stand, and rays generated by the radiation source mechanism can only be focused on a certain fixed focus, so that the treatment range is small. For the above reasons, radiotherapy apparatuses are generally classified into two types according to the treatment region: a head radiotherapy apparatus for head region treatment, and a body radiotherapy apparatus for other region treatment than the head. In the head radiotherapy equipment, the source mechanism is vertically arranged on the stand, and the direction of the beam emitted by the source mechanism is the horizontal direction at the moment; in the body radiotherapy equipment, a source mechanism is horizontally arranged on a rack, and the direction of a beam emitted by the source mechanism is a vertical direction.
At present, because the treatment scope of the existing radiotherapy equipment is limited, one radiotherapy equipment can only be used for treating cancers in a certain area, and the treatment of cancers in a head area and cancers in a body area can not be simultaneously considered, so that the head radiotherapy equipment and the body radiotherapy equipment are required to be purchased simultaneously for meeting more treatment requirements, and the cost is high.
The radiotherapy system provided by the embodiment of the application can enable the source mechanism to be switched between different working positions, and the treatment range of the radiotherapy system is enlarged. By way of example, the switching mechanism may cause the source mechanism to flip between 0 ° -90 °. It will be appreciated that the source mechanism can be used to treat the body in the range of 0 ° -90 °; also, the source mechanism can be used to treat the head in the range of 0 ° -90 °. When the source mechanism is positioned at the horizontal position, namely the source mechanism can treat the body region at the 0-degree position, the source mechanism is positioned at the body treatment working position; when the source mechanism turns over, namely the turning angle is larger than 0 DEG, the treatment of the head area can be carried out, and the source mechanism is positioned at the head treatment working position. Preferably, in order to obtain a better therapeutic effect, the position of the source mechanism when the turnover angle of the source mechanism is 54.5 degrees can be used as a head treatment working position, and at this time, the rays generated by the source mechanism can be better focused on the diseased region of the head.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a radiotherapy system according to an embodiment of the present application. The radiotherapy system comprises: a conversion mechanism, a frame 1 and a source mechanism 2; the conversion mechanism sets up in the frame, and conversion mechanism includes: a driving mechanism 3 and a transmission mechanism 4; the transmission mechanism 4 is connected with the source mechanism 2 so as to drive the source mechanism 2 to switch between different working positions under the drive of the driving mechanism 3, wherein the beam directions of the beams emitted by the source mechanism 2 at the different working positions are different.
By way of example, the operating positions of the source mechanism 2 may include: a body treatment work position and a head treatment work position. The beam direction is also different when the source mechanism 2 is in different operating positions. The beam direction is the center line of the focused beam formed by the plurality of radiation sources in the source mechanism 2, which is directed away from the source mechanism. For example, when the source device 2 is in the 0 ° position, the beam direction is perpendicular to the horizontal plane; the beam direction is parallel to the horizontal plane when the source device 2 is in the 90 position; when the source device 2 is at the 54.5 DEG position, the beam direction forms an angle of 54.5 DEG with the horizontal plane. Illustratively, the body treatment station is the 0 ° position of the source device 2; the head treatment work position is the 54.5 DEG position of the source device 2.
In the embodiment of the present application, the stand 1 may be a support frame with any shape that can support the source mechanism 2 for overturning. By way of example, the frame 1 may be composed of a plurality of components. For example: the frame 1 may be composed of 4 support columns, and 2 beams. Specifically, 4 support posts can be fixed in the computer lab ground of installation radiotherapy system, and the line of 4 fixed points forms the rectangle, and the crossbeam setting is between the support post, and 2 crossbeams are parallel to each other.
The support column can be a column body with any shape, and can be a groove-shaped column body formed by welding metal plates; the solid upright post can also be integrally formed, for example: an integrally formed solid upright post with a rectangular cross section, or an integrally formed solid upright post with a circular cross section, and the like. In the embodiment of the present application, the material of the frame 1 is not limited, and in order to improve the supporting strength of the frame 1, it is preferable to use a common metal material such as steel, pig iron, iron alloy, cast iron, etc.
By way of example, the conversion mechanism includes: a driving mechanism 3 and a transmission mechanism 4; the transmission mechanism 4 is respectively connected with the driving mechanism 3 and the source mechanism 2. The driving mechanism drives the source mechanism to switch between different working positions. The conversion mechanism is fixed on a beam of the frame. By way of example, the driving mechanism 3 may be any component capable of providing power (driving torque) to the transmission mechanism 4, and the specific form of the driving mechanism 3 is not limited in the embodiment of the present application. The transmission mechanism 4 in the embodiment of the present application is a mechanism for transmitting the power (driving torque) provided by the driving mechanism 3 to the source mechanism 2 to turn over the source mechanism 2 and thereby switch between different working positions. The specific form of the transmission mechanism 4 is not limited. For example, the transmission mechanism 4 may be one of a slide transmission mechanism, a link transmission mechanism, a belt mechanism, and the like. By way of example, the transmission mechanism 4 may be a multi-stage transmission mechanism, wherein each stage of transmission mechanism may be one of a slide transmission mechanism, a link transmission mechanism, a belt mechanism, and the like. That is, the transmission mechanism 4 may be a combination of the above-described various transmission mechanisms.
In one embodiment, the source mechanism is disposed on the frame, the driving mechanism is fixed on the frame, and the transmission mechanism is connected with the driving mechanism and the source mechanism respectively.
By way of example, the source mechanism 2 may be arranged between two beams of the gantry 1 and flipped with respect to the beams, and the rotation axis of the source mechanism 2 may be perpendicular to the above-mentioned 2 beams. The source mechanism 2 may be flipped around its rotational axis to both sides, to the left as shown in fig. 1, or to the right. Switching between the different operating positions is performed by flipping. Because the directions of the beams emitted by the source mechanism 2 are different when the device is in different working positions, the rays generated by the source mechanism 2 can be focused at different focuses according to actual needs to treat diseases.
In one embodiment, the source mechanism is disposed on the conversion mechanism.
The switching mechanism is, for example, arranged on the machine frame, i.e. the drive mechanism 3 and the transmission mechanism 4 are arranged on the machine frame. The source mechanism 2 is fixedly arranged on the conversion mechanism and is fixed with the frame 1 through the conversion mechanism. For example, the two beams may each be provided with a conversion mechanism, and the source mechanism 2 may be disposed between the conversion mechanisms on the two beams. The switching mechanism may drive the source mechanism 2 to flip over to switch between different operating positions.
In one embodiment, the source mechanism may be translatable and/or liftable on the gantry.
The source mechanism 2 is, for example, fixedly arranged on a conversion mechanism, by means of which it is fixed to the frame 1. The frame 1 is provided with a guide rail, the conversion mechanism is fixed on the guide rail and can translate on the guide rail, and the translation of the conversion mechanism drives the source mechanism 2 to translate on the frame. The conversion mechanism is fixed on the frame 1 by a lifting mechanism, lifting of the conversion mechanism is realized by the lifting mechanism, and the source mechanism 2 is driven to lift by lifting of the conversion mechanism. The frame 1 is provided with a guide rail, the guide rail is provided with a sliding block, the conversion mechanism is connected with the sliding block through a lifting mechanism, the sliding block can translate on the sliding rail to drive the lifting mechanism and the source mechanism 2 to translate on the frame, lifting of the conversion mechanism can be realized through the lifting mechanism, and lifting of the source mechanism 2 is driven through lifting of the conversion mechanism. The lifting mechanism may be a scissor lifting mechanism, an air cylinder lifting mechanism or the like, and the lifting mechanism is not particularly limited in this embodiment. By means of translation and/or lifting of the source mechanism, the generated rays can be focused on the same focus when the source mechanism is in different working positions.
In one embodiment, the transmission mechanism 4 may include at least: a primary transmission assembly and a secondary transmission assembly; the primary transmission assembly is connected with the driving mechanism 3, and the secondary transmission assembly is connected with the source mechanism 2; the driving mechanism 3 drives the primary transmission assembly, the primary transmission assembly drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism 2 to switch between different working positions.
In the embodiment of the application, the primary transmission mechanism can be directly connected with the secondary transmission mechanism, or a multi-stage transmission mechanism can be arranged between the connection of the primary transmission mechanism and the secondary transmission mechanism, the driving mechanism 3 drives the primary transmission assembly, the primary transmission assembly drives the multi-stage transmission mechanism, the multi-stage transmission mechanism drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism 2 to switch between different working positions. The specific form of the primary transmission assembly and the secondary transmission assembly is not limited. In one embodiment, the primary transmission assembly may be any one of a sliding transmission mechanism, a connecting rod transmission mechanism, a gear transmission mechanism, a transmission belt mechanism, etc.; similarly, the secondary transmission assembly may be any one of a slide transmission mechanism, a link transmission mechanism, a gear transmission mechanism, a belt transmission mechanism, and the like. Wherein, the slip drive mechanism specifically can be: the mechanism consists of a sliding block and a sliding rail, and the sliding block moves along the sliding rail to transmit power; the connecting rod transmission mechanism can be specifically as follows: a mechanism formed by connecting 1 or more connecting rods through a revolute pair; the gear transmission mechanism can be specifically: a gear train formed by meshing a plurality of gears, wherein power is transmitted through meshing between the gears; the transmission belt mechanism can be specifically: chain drive, belt drive, etc.
By way of example, the embodiment of the present application is not limited to how the primary transmission assembly and the secondary transmission assembly are specifically combined. For example, when the primary transmission component is a screw transmission component, the secondary transmission component may be a link transmission component, in which case the screw transmission component is connected with the driving mechanism 3 and the link transmission component respectively, the link transmission component is connected with the source mechanism 2, the driving mechanism 3 drives the screw transmission component, and the screw transmission component drives the link transmission component, so that the link transmission component drives the source mechanism 2 to switch between different working positions; or, the primary transmission assembly and the secondary transmission assembly are gear transmission assemblies (respectively, the primary gear transmission assembly and the secondary gear transmission assembly), in this case, the primary gear transmission assembly is respectively connected with the driving mechanism 3 and the secondary gear transmission assembly, the secondary gear transmission assembly is connected with the source mechanism 2, the driving mechanism 3 drives the primary gear transmission assembly, and the primary gear transmission assembly drives the secondary gear transmission assembly, so that the secondary gear transmission assembly drives the source mechanism 2 to switch between different working positions; or, when the primary transmission component is a gear transmission component, the secondary transmission component may be a chain transmission component, in this case, the gear transmission component is connected with the driving mechanism 3 and the chain transmission component, the chain transmission component is connected with the source mechanism 2, the driving mechanism 3 drives the gear transmission component, and the gear transmission component drives the chain transmission component, so that the chain transmission component drives the source mechanism 2 to switch between different working positions.
Referring to fig. 1, in one embodiment, a primary drive assembly may include: a slide rail 41 and a slider 42; the sliding rail 41 is arranged on the cross beam of the frame 1, and the sliding block 42 is arranged on the sliding rail 41; the secondary transmission component is respectively connected with the sliding block 42 and the source mechanism 2; the driving mechanism 3 drives the sliding block 42 to move along the sliding rail 41, and the sliding block 42 drives the secondary transmission assembly which drives the source mechanism 2 to switch between different working positions.
In the embodiment of the present application, the specific shape of the sliding rail 41 is not limited, for example: the track may be circular in cross section, square in cross section, irregular in cross section, or the like. The slider 42 may be a sleeve having an arbitrary shape provided on the slide rail 41 and movable along the slider 42.
For example, in the embodiment of the present application, the materials of the sliding rail 41 and the sliding block 42 are not limited, and may be determined according to actual needs.
Referring to fig. 1, in the embodiment of the present application, the working position switching manner of the source mechanism 2 may be divided into the following three cases: first, the source mechanism 2 can only be turned to the left to switch from the body treatment position to the head treatment position; second kind: the source mechanism 2 can only turn right to switch from the body treatment working position to the head treatment working position; third, the source mechanism 2 can be turned over to the left or right to switch from the body treatment position to the head treatment position.
For the first case described above: the source mechanism 2 can only be turned left to switch from the body treatment position to the head treatment position, when the source mechanism 2 is in the horizontal position, the slide 42 is located at the rightmost end of the slide rail 41, and then, as the slide 42 moves leftwards along the slide rail 41, the slide 42 can drive the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism 2 to turn left around the rotation axis thereof, so as to switch from the body treatment position to the head treatment position.
For the second case described above: the source mechanism 2 can only turn right to switch from the body treatment position to the head treatment position, when the source mechanism 2 is in the horizontal position, the slide 42 is located at the leftmost end of the slide rail 41, and then, as the slide 42 moves right along the slide rail 41, the slide 42 can drive the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism 2 to turn right around the rotation axis thereof, so as to switch from the body treatment position to the head treatment position.
For the third case described above: the source mechanism 2 can be turned left or right to switch from the body treatment working position to the head treatment working position, when the source mechanism 2 is positioned at the horizontal position, the sliding block 42 is positioned at the middle position of the sliding rail 41, and then if the sliding block 42 moves rightwards along the sliding rail 41, the sliding block 42 can drive the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism 2 to turn right around the rotating shaft of the secondary transmission assembly to switch from the body treatment working position to the head treatment working position; if the slider 42 moves leftwards along the sliding rail 41, the slider 42 can drive the secondary transmission assembly, which in turn drives the source mechanism 2 to turn leftwards about its rotation axis, to switch from the body treatment work position to the head treatment work position.
Referring to FIG. 1, in one embodiment, the secondary drive assembly includes a connecting rod 43; one end of a connecting rod 43 is rotationally connected with the sliding block 42, and the other end of the connecting rod 43 is rotationally connected with the edge of the source mechanism 2; the slide 42 drives a link 43, the link 43 driving the source mechanism 2 to switch between different operating positions.
For example, for the case that the source mechanism 2 can only be turned to one side (left side or right side) to switch the working position, in the process of turning the source mechanism 2 from the horizontal position to the vertical position, the slide block 42 drives the connecting rod 43, and the connecting rod 43 pushes the source mechanism 2 to achieve turning of the source mechanism 2, so that the source mechanism 2 is switched from the body treatment working position to the head treatment working position; in the process of turning the source mechanism 2 from the vertical position to the horizontal position, the slide block 42 drives the connecting rod 43, and the connecting rod 43 pulls the source mechanism 2 to achieve turning of the source mechanism 2, so that the source mechanism 2 is switched back from the head treatment working position to the body treatment working position.
Referring to fig. 1, for the case that the source mechanism 2 can be turned left or turned right, in the process of turning the source mechanism 2 from the horizontal position to the vertical position along the left side, the slider 42 moves left to drive the connecting rod 43, and the connecting rod 43 pushes the source mechanism 2 to realize the turning of the source mechanism 2 left, so that the source mechanism 2 is switched from the body treatment working position to the head treatment working position; thereafter, during the process of turning the source mechanism 2 from the vertical position back to the horizontal position, the slider 42 moves rightward, driving the link 43, and the link 43 pulls the source mechanism 2 to turn the source mechanism 2 over, thereby switching the source mechanism 2 from the head treatment working position back to the body treatment working position; in the process of turning the source mechanism 2 from the horizontal position to the vertical position along the right side, the sliding block 42 moves rightwards to drive the connecting rod 43, and the connecting rod 43 pulls the source mechanism 2 to realize the turning of the source mechanism 2 rightwards, so that the source mechanism 2 is switched from the body treatment working position to the head treatment working position; thereafter, during the process of turning the source mechanism 2 from the vertical position back to the horizontal position, the slider 42 moves leftward, driving the link 43, and the link 43 pushes the source mechanism 2 to achieve turning of the source mechanism 2, thereby switching the source mechanism 2 from the head treatment work position back to the body treatment work position.
The link 43 in the embodiment of the present application may be a rod having an arbitrary shape in cross section, for example: the cross-section may be rectangular, trapezoidal, square, circular, etc.
Because the size and the quality of the source mechanism 2 are both larger, in order to avoid the jamming of the source mechanism 2 in the overturning process, and ensure that the overturning of the source mechanism 2 is smoother, referring to fig. 1, in one embodiment, the transmission mechanism 4 including the primary transmission assembly and the secondary transmission assembly may be disposed on two opposite beams of the frame 1.
In one embodiment, a screw rod 44 is disposed on either one of the two transmission mechanisms 4, and the screw rod 44 passes through the sliding block 42 and is disposed on the sliding rail 41; the driving mechanism 3 drives the screw rod 44, and the screw rod 44 drives the sliding block 42 to move along the sliding rail 41.
For example, one end of the screw rod 44 may be fixedly connected to the output shaft of the driving mechanism 3, the other end of the screw rod 44 passes through the slider 42 and is disposed on the sliding rail 41, when the output shaft of the driving mechanism 3 drives the screw rod 44 to rotate, the screw rod 44 drives the slider 42 to move along the sliding rail 41, the slider 42 drives the connecting rod 43, and the connecting rod 43 drives the power source mechanism 2 to overturn.
Referring to fig. 2, fig. 2 is a schematic structural diagram of another radiotherapy system according to an embodiment of the present application, in which the primary transmission assembly may include: a first gear 45; the first gear 45 is rotationally connected with the driving mechanism 3, the first gear 45 is meshed with the secondary transmission assembly, the driving mechanism 3 drives the first gear 45 to rotate, and the first gear 45 drives the secondary transmission assembly, so that the secondary transmission assembly drives the power source mechanism 2 to overturn.
In the embodiment of the present application, the basic structural parameters of the first gear 45 are not limited, and may be determined according to actual needs. The specific form of the secondary transmission assembly is not limited, and for example, the secondary transmission assembly may be a gear transmission assembly, a chain transmission assembly, or the like.
Referring to fig. 2, in the embodiment of the present application, the working position switching manner of the source mechanism 2 may be divided into the following three cases: first, the source mechanism 2 can only be turned to the left to switch from the body treatment position to the head treatment position; second kind: the source mechanism 2 can only turn right to switch from the body treatment working position to the head treatment working position; third, the source mechanism 2 can be turned over to the left or right to switch from the body treatment position to the head treatment position.
For the first case described above: the source mechanism 2 can only turn left to switch from the body treatment position to the head treatment position, and when the source mechanism 2 turns from the horizontal position to the vertical position, the first gear 45 rotates clockwise to drive the secondary transmission assembly, so that the secondary transmission assembly drives the source mechanism 2 to turn over to switch from the body treatment position to the head treatment position.
For the second case described above: the source mechanism 2 can only turn right to switch from the body treatment position to the head treatment position, and when the source mechanism 2 turns from the horizontal position to the vertical position, the first gear 45 rotates in the counterclockwise direction, and then drives the secondary transmission assembly, so that the secondary transmission assembly drives the source mechanism 2 to turn over to switch from the body treatment position to the head treatment position.
For the third case described above: the source mechanism 2 can be turned over to the left or right to switch from the body treatment working position to the head treatment working position, and when the source mechanism 2 is positioned at the horizontal position, if the first gear 45 rotates in the anticlockwise direction, the source mechanism 2 is turned over to the right to switch from the body treatment working position to the head treatment working position; if the first gear 45 rotates in the clockwise direction, the source mechanism 2 turns to the left to switch from the body treatment work position to the head treatment work position.
Referring to FIG. 2, in one embodiment, the secondary drive assembly may include a second gear 46; the second gear 46 is fixedly connected with the rotating shaft of the source mechanism 2, the second gear 46 is connected with the first gear 45 in an external meshed mode, the first gear 45 drives the second gear 46 to rotate, and the second gear 46 drives the source mechanism 2 to switch between different working positions.
In the embodiment of the present application, the second gear 46 may be any gear that can be externally meshed with the first gear 45, and the basic structural parameters of the second gear 46 are not limited and may be determined according to actual needs.
For example, to save space, the second gear 46 may be a sector gear. In the embodiment of the application, the included angle formed by the two sides of the sector gear is not limited, and can be set according to actual needs.
For example, for the first case described above: when the source mechanism 2 is in the horizontal position, the first gear 45 and the second gear 46 mesh with the leftmost side of the second gear 46 (sector gear), and in the process of turning the source mechanism 2 from the horizontal position to the vertical position, the first gear 45 rotates clockwise, so as to drive the second gear 46 to rotate anticlockwise, and further drive the source mechanism 2 to turn to the left side, so that the source mechanism 2 is switched from the body treatment position to the head treatment position.
For the second case described above: when the source mechanism 2 is in the horizontal position, the first gear 45 and the second gear 46 mesh with the rightmost side of the second gear 46 (sector gear), and in the process of turning the source mechanism 2 from the horizontal position to the vertical position, the first gear 45 rotates in the anticlockwise direction, so as to drive the second gear 46 to rotate in the clockwise direction, and further drive the source mechanism 2 to turn to the right side, so that the source mechanism 2 is switched from the body treatment position to the head treatment position.
For the third case described above: when the source mechanism 2 is in the horizontal position, the first gear 45 and the second gear 46 are meshed with the middle position of the second gear 46 (sector gear), and at this time, if the first gear 45 rotates in the clockwise direction, the second gear 46 rotates in the anticlockwise direction, so that the source mechanism 2 is driven to overturn to the left side to switch from the body treatment position to the head treatment position; if the first gear 45 rotates in the counterclockwise direction, the second gear 46 rotates in the clockwise direction, and drives the source mechanism 2 to turn right, so as to switch from the body treatment working position to the head treatment working position.
Referring to fig. 3, fig. 3 is a schematic structural diagram of yet another radiotherapy system according to an embodiment of the present application. In this embodiment, the secondary transmission assembly may include: a chain 47; the chain 47 is connected with the first gear 45 in a meshed manner, two ends of the chain 47 are respectively connected with edges of two ends of the source mechanism 2, the first gear 45 drives the chain 47 to move, and the chain 47 drives the source mechanism 2 to switch between different working positions.
The specific shape and type of the chain 47 is not limited in the embodiment of the present application. The chain 47 may be fixedly connected to the edges of the two ends of the source mechanism 2 or may be rotatably connected.
In the embodiment shown in fig. 3, the manner of switching the working position of the source mechanism 2 can be divided into the following three cases: first, the source mechanism 2 can only be turned to the left to switch from the body treatment position to the head treatment position; second kind: the source mechanism 2 can only turn right to switch from the body treatment working position to the head treatment working position; third, the source mechanism 2 can be turned over to the left or right to switch from the body treatment position to the head treatment position.
For example, for the first case described above: when the source mechanism 2 is in the horizontal position, the first gear 45 and the chain 47 are engaged with the leftmost end of the chain 47, and in the process of turning the source mechanism 2 from the horizontal position to the vertical position, the first gear 45 rotates in the anticlockwise direction, so as to drive the chain 47 to move leftwards, and further drive the source mechanism 2 to turn leftwards, so that the source mechanism 2 is switched from the body treatment position to the head treatment position.
For the second case described above: when the source mechanism 2 is in the horizontal position, the first gear 45 and the chain 47 are engaged with the rightmost end of the chain 47, and in the process of turning the source mechanism 2 from the horizontal position to the vertical position, the first gear 45 rotates clockwise to drive the chain 47 to move rightwards, and then drive the source mechanism 2 to turn rightwards to switch from the body treatment position to the head treatment position.
For the third case described above: when the source mechanism 2 is positioned at the horizontal position, the first gear 45 and the chain 47 are meshed with the middle position of the chain 47, and at the moment, if the first gear 45 rotates clockwise, the chain 47 moves rightward, so that the source mechanism 2 is driven to overturn rightward to switch from the body treatment working position to the head treatment working position; when the first gear 45 rotates in the counterclockwise direction, the chain 47 moves leftward, and the source mechanism 2 is driven to turn leftward, so that the body treatment position is switched to the head treatment position.
In one embodiment, the driving mechanism 3 may include: and the motor is fixed on the cross beam of the frame 1.
In the embodiment of the application, for parameters of the motor, for example: the type, output torque, output rotation speed and the like of the motor are not limited, and can be selected according to actual needs.
In further embodiments, the driving mechanism 3 may further include: a speed reducer; the input shaft of the speed reducer is connected with the output shaft of the motor, and the speed reducer drives the transmission mechanism 4 so that the transmission mechanism 4 drives the source mechanism 2 to switch between different working positions.
Illustratively, the motor is configured to generate a drive torque to power (drive torque) the inversion of the source mechanism 2; the speed reducer transmits the driving torque generated by the motor to the transmission mechanism 4, and at the same time, reduces the rotational speed output to the transmission mechanism 4.
In the embodiment of the present application, the type of the speed reducer is not limited, for example: a worm gear reducer, a gear reducer, or the like may be selectively used. The worm and gear speed reducer has the advantages that: the self-locking mechanism has a reverse self-locking function and a large reduction ratio, but also has the following disadvantages: the volume is bigger, the transmission efficiency is not high, and the precision is not high. The gear reduction machine has the advantages of small volume, large transmission torque, high transmission efficiency, low energy consumption and the like. Therefore, a suitable type of decelerator can be selected according to actual needs.
In addition, in the embodiment of the present application, for parameters of the speed reducer, for example: the reduction ratio, the transmission torque and the like are not limited, and can be selected according to actual needs.
In one embodiment, the radiotherapy system further comprises a position detection mechanism; the position detection mechanism is used for detecting the position of the source mechanism.
For example, the position detection mechanism detects the rotational position of the source mechanism 2 in real time when the source mechanism 2 is switched between different operating positions, i.e. when the source mechanism 2 is flipped. For example, the position detection mechanism may be one of an encoder, a grating scale, and a detection switch. Illustratively, the encoder and the grating scale are capable of detecting the flip angle of the source mechanism 2 in real time. For example, when the source mechanism 2 is flipped to 20 °, the output of the encoder or grating scale may be the corresponding distance of movement or flip angle. The position detecting means may be, for example, a detecting switch provided on the housing 1, and a switch plunger provided on the source mechanism 2. When the source mechanism 2 is turned to the specified position, the switch bump on the source mechanism 2 touches the detection switch on the frame 1 to trigger the detection switch, and the source mechanism 2 reaches the specified position. For example, the designated position is a position of the source mechanism 2 at 54.5 °, at this time, a detection switch is provided on the chassis 1 corresponding to the position of the source mechanism 2 turned 54.5 °, when the source mechanism 2 is turned to 54.5 °, the switch bump on the source mechanism 2 triggers the detection switch, and when the detection switch is triggered, the source mechanism 2 is turned to the designated position. The position detection mechanism is arranged, so that the overturning angle of the source mechanism 2 is more accurate.
In one embodiment, the radiotherapy system further comprises a locking mechanism; when the position detection mechanism detects that the source mechanism is switched to a designated position, a locking instruction is sent to the locking mechanism; the locking mechanism locks the source mechanism to a designated position according to the locking instruction.
For example, when the source mechanism 2 is turned to the specified position, the source mechanism 2 is locked to the specified position by the locking device, so that the source mechanism 2 is more stable when operating at the specified position. The locking mechanism can be a speed reducer in the driving mechanism, and the locking mechanism can also be any device capable of fixing the position. The position detection mechanism is an encoder or a grating ruler, the encoder or the grating ruler detects the overturning angle of the source mechanism 2 in real time in the overturning process of the source mechanism 2, and when the source mechanism 2 is detected to be overturned to 54.5 degrees, the encoder or the grating ruler sends a locking instruction to the speed reducer; or the encoder or the grating ruler sends an in-place instruction to the controller, and the controller sends a locking instruction to the speed reducer after receiving the in-place instruction; the decelerator locks the source mechanism 2 to the 54.5 deg. position after receiving the locking command. The position detection mechanism is exemplified by a detection switch provided on the chassis and a switch plunger provided on the source mechanism 2. When the source mechanism 2 is turned to a 54.5 DEG position, a switch collision block on the source mechanism 2 triggers a detection switch on the frame 1, and a locking instruction is sent to a speed reducer after the detection switch is triggered; or after the detection switch is triggered, a locking instruction is sent to the speed reducer by the controller after the controller receives the in-place instruction; the decelerator locks the source mechanism 2 to the 54.5 deg. position after receiving the locking command.
It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and variations of the present application will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the application are to be included in the scope of the claims of the present application.
Claims (17)
- A radiation therapy system, the radiation therapy system comprising: the device comprises a conversion mechanism, a rack and a source mechanism;the conversion mechanism sets up in the frame, the conversion mechanism includes: a driving mechanism and a transmission mechanism; the transmission mechanism is connected with the source mechanism so as to drive the source mechanism to switch between different working positions under the drive of the driving mechanism, wherein the beam emitted by the source mechanism is different in beam directions of different working positions.
- The radiotherapy system of claim 1, wherein the transmission mechanism comprises at least a primary transmission assembly and a secondary transmission assembly;the primary transmission assembly is connected with the driving mechanism, and the secondary transmission assembly is connected with the source mechanism; the driving mechanism drives the primary transmission assembly, the primary transmission assembly drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism to switch between different working positions.
- The radiation therapy system of claim 2, wherein the radiation therapy system comprises,the primary transmission assembly and/or the secondary transmission assembly is/are one of a sliding transmission mechanism, a connecting rod transmission mechanism, a gear transmission mechanism and a transmission belt mechanism.
- The radiation therapy system of claim 2, wherein the primary drive assembly comprises: slide rail and slider;the sliding rail is arranged on the cross beam of the frame, and the sliding block is arranged on the sliding rail; the secondary transmission assembly is respectively connected with the sliding block and the source mechanism; the driving mechanism drives the sliding block to move along the sliding rail, the sliding block drives the secondary transmission assembly, and the secondary transmission assembly drives the source mechanism to switch between different working positions.
- The radiation therapy system of claim 4, wherein the secondary transmission assembly comprises a linkage;one end of the connecting rod is rotationally connected with the sliding block, and the other end of the connecting rod is rotationally connected with the edge of the source mechanism; the slide block drives the connecting rod, and the connecting rod drives the source mechanism to switch between different working positions.
- The radiotherapy system of claim 5, wherein the transmission mechanism is arranged on two opposite beams of the frame.
- The radiotherapy system of claim 6, wherein a screw is provided on either of the two transmission mechanisms, the screw being provided on the slide rail through the slider; the driving mechanism drives the screw rod, and the screw rod drives the sliding block to move along the sliding rail.
- The radiation therapy system of claim 2, wherein the primary drive assembly comprises a first gear;the first gear is connected with the driving mechanism in a rotating way, the first gear is connected with the secondary transmission assembly in a meshed way, the driving mechanism drives the first gear to rotate, and the first gear drives the secondary transmission assembly so that the secondary transmission assembly drives the power source mechanism to convert among different working positions.
- The radiotherapy system of claim 8, wherein the secondary transmission assembly comprises a second gear;the second gear is fixedly connected with the rotating shaft of the source mechanism, the second gear is connected with the first gear in an external meshing mode, the first gear drives the second gear to rotate, and the second gear drives the source mechanism to switch between different working positions.
- The radiotherapy system of claim 8, wherein the secondary drive assembly comprises a chain;the chain is connected with the first gear in a meshed manner, two ends of the chain are respectively connected with edges of two ends of the power source mechanism, the first gear drives the chain to move, and the chain drives the power source mechanism to switch between different working positions.
- The radiotherapy system of claim 1, wherein the drive mechanism comprises: a motor; the motor is fixed on a cross beam of the frame;the motor drives the transmission mechanism so that the transmission mechanism drives the source mechanism to switch between different working positions.
- The radiotherapy system of claim 11, wherein the drive mechanism further comprises: a speed reducer;the input shaft of the speed reducer is connected with the output shaft of the motor, the output shaft of the speed reducer is connected with the transmission mechanism, and the speed reducer drives the transmission mechanism so that the transmission mechanism drives the source mechanism to switch between different working positions.
- The radiation therapy system of claim 1, wherein the source mechanism is disposed on the housing, the drive mechanism is fixed to the housing, and the transmission mechanism is connected to the drive mechanism and the source mechanism, respectively.
- The radiation therapy system of claim 1, wherein said source mechanism is disposed on said conversion mechanism.
- The radiation therapy system of claim 1, wherein the radiation therapy system comprises,The source mechanism may translate and/or raise and lower on the gantry.
- The radiotherapy system of claim 1, further comprising a position detection mechanism;the position detection mechanism is used for detecting the position of the source mechanism.
- The radiotherapy system of claim 1, further comprising a locking mechanism;when the position detection mechanism detects that the source mechanism is switched to a specified position, a locking instruction is sent to the locking mechanism;the locking mechanism locks the source mechanism to the designated position according to the locking instruction.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/CN2020/142498 WO2022141569A1 (en) | 2020-12-31 | 2020-12-31 | Radiotherapy system |
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| CN116685269A true CN116685269A (en) | 2023-09-01 |
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| CN202080108246.4A Pending CN116685269A (en) | 2020-12-31 | 2020-12-31 | Radiotherapy system |
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| WO (1) | WO2022141569A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1899647A (en) * | 2005-07-18 | 2007-01-24 | 郑铁 | Full body gamma knife radiation therapeutic device |
| EP3569289B1 (en) * | 2010-02-24 | 2020-12-09 | Accuray, Inc. | Gantry image guided radiotherapy system and related target tracking methods |
| CN103386168B (en) * | 2013-07-17 | 2016-09-14 | 官爱平 | A kind of radiotherapy system of integrated digital imaging device |
| CN203694432U (en) * | 2014-02-08 | 2014-07-09 | 郑晓天 | Stereotactic whole-body radiotherapy device |
| CN108175955A (en) * | 2018-01-15 | 2018-06-19 | 西安大医数码科技有限公司 | A kind of radiotherapy apparatus |
| CN108969906A (en) * | 2018-06-15 | 2018-12-11 | 岑永娟 | Optimize the head radiotherapy equipment of IGRT image guidance consistency |
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2020
- 2020-12-31 WO PCT/CN2020/142498 patent/WO2022141569A1/en active Application Filing
- 2020-12-31 CN CN202080108246.4A patent/CN116685269A/en active Pending
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