CN110099717B

CN110099717B - Therapeutic equipment

Info

Publication number: CN110099717B
Application number: CN201680090818.4A
Authority: CN
Inventors: 陈方正; 刘海峰
Original assignee: Our United Corp
Current assignee: Our United Corp
Priority date: 2016-11-15
Filing date: 2016-11-15
Publication date: 2021-08-27
Anticipated expiration: 2036-11-15
Also published as: CN110099717A; WO2018090196A1

Abstract

A treatment apparatus in the field of radiotherapy apparatus, which reduces the number of detectors (16). The treatment equipment comprises a roller (11), a detector (16) and a sliding driving unit, wherein the sliding driving unit comprises a sliding guide rail (12), a driving device and a moving flat plate (15), the detector (16) is fixed on the moving flat plate (15), and the moving flat plate (15) drives the detector (16) to slide along the sliding guide rail (12) under the driving of the driving device.

Description

Therapeutic equipment

Technical Field

The invention relates to the field of radiotherapy instruments, in particular to treatment equipment.

Background

Modern tumor radiotherapy technology has begun to enter the precise treatment era, and therefore, it is crucial to realize precise image guidance and control the radiation dose absorbed by a patient to achieve high matching degree with a well-established treatment plan. The core components of the existing therapeutic equipment are shown in fig. 1, and comprise a roller 904, a therapeutic head 900 and a first detector 901 corresponding to the therapeutic head 900, and a set of image guiding devices, including a bulb 902 and a second detector 903 corresponding to the bulb 902. The treatment head 900 emits radiation of therapeutic energy for irradiation treatment of tumor. The primary function of the first detector 901 is to detect whether the radiation dose emitted by the treatment head 900 matches the treatment plan of the patient, i.e. to perform dose verification. The image-guided system is used for therapeutic pre-positioning or real-time positioning of the patient during treatment, wherein the primary function of the second detector 903 is to detect x-rays emitted by the bulb 902 and passing through the patient, thereby enabling imaging of the tumor-related region.

The use of multiple detectors increases equipment costs due to the expensive price of the detectors. Detectors have a limited useful life in a radiographic environment, and multiple detectors need to be overhauled or replaced in subsequent equipment maintenance, further increasing equipment costs.

Disclosure of Invention

The invention provides a treatment device which can realize functions such as dose verification or image guidance and the like by using fewer detectors.

The purpose of the invention is realized by the following technical scheme:

the therapeutic equipment comprises a roller, a detector and a sliding driving unit, wherein the sliding driving unit comprises a sliding guide rail, a driving device and a moving flat plate, the detector is fixed on the moving flat plate, and the moving flat plate drives the detector to slide along the sliding guide rail under the driving of the driving device.

The therapeutic equipment comprises the roller, the detector and the sliding driving unit, wherein the sliding driving unit comprises a sliding guide rail, a driving device and a moving flat plate, the detector is fixed on the moving flat plate, and the moving flat plate drives the detector to slide along the sliding guide rail under the driving of the driving device. Adopt this kind of mode, the motion flat board just can be under drive arrangement's drive, along the motion of sliding guide, the detector on the motion flat board also moves on sliding guide along with the motion flat board, make the detector can move along sliding guide, thereby make this detector can move to different positions, receive the ray that different ray heads sent, just so can reduce the setting of detector, even there are a plurality of ray heads, also can set up the ray that a detector detected different ray heads, thereby can utilize less detector to realize functions such as dose verification or image guide, a large amount of treatment spaces have been saved, simultaneously less detector also can greatly reduced treatment facility's acquisition cost and maintenance cost.

Drawings

FIG. 1 is a schematic diagram of a prior art treatment apparatus;

FIG. 2 is a schematic structural diagram of a treatment apparatus provided in an embodiment of the present invention;

FIG. 3 is a partial perspective view of a treatment apparatus provided by an embodiment of the present invention;

FIG. 4 is a side view of a treatment apparatus provided by an embodiment of the present invention;

FIG. 5 is a partial schematic view of a treatment apparatus provided by an embodiment of the present invention;

FIG. 6 is a partial block diagram of a treatment apparatus provided in accordance with an embodiment of the present invention;

FIG. 7 is a partial block diagram of a treatment apparatus provided in accordance with an embodiment of the present invention;

fig. 8 is a schematic view of the movement direction of the pulley seat of the therapeutic apparatus provided by the embodiment of the present invention;

figure 9 is a schematic view of the axial deflection of the pulley block of the treatment apparatus provided by the embodiment of the present invention;

FIG. 10 is a schematic structural diagram of a treatment apparatus provided by an embodiment of the present invention;

fig. 11 is a schematic structural diagram of a treatment device provided by an embodiment of the invention.

Reference numerals:

10-ray head, 11-roller, 12-sliding guide, 13-treatment head, 14-imaging head, 15, motion plate, 16, detector, 17, through hole, 18-driver, 19-first power part, 20-second power part, 21-first position, 22-second position, 23-motor, 24-motor gear, 25-gear ring, 26-sliding part, 27-sliding part, 28-pulley, 29-sliding rail, 30-pulley seat, 31-mounting seat, 32-first locking device, 33-sliding groove, 34-first tensioning screw, 35-second tensioning screw, 36-second locking device, 37-nut, 38-cover plate, 39-through hole, 40-baffle, 41-first transmission part, 42-second transmission part.

Detailed Description

In the description of the present invention, it is to be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified. Furthermore, the term "comprises" and any variations thereof is intended to cover non-exclusive inclusions.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The invention is further described with reference to the drawings and the preferred embodiments.

The embodiment discloses a therapeutic apparatus, as shown in fig. 2 and fig. 3, which exemplarily comprises a roller 11, a detector 16 and a sliding driving unit, wherein the sliding driving unit comprises a sliding guide rail 12, a driving device and a moving plate 15, the detector 16 is fixed on the moving plate 15, and the moving plate 15 drives the detector 16 to slide along the sliding guide rail 12 under the driving of the driving device.

By adopting the mode of the embodiment, the moving flat plate 15 can move along the sliding guide rail 12 under the driving of the driving device, the detector 16 on the moving flat plate 15 also moves on the sliding guide rail 12 along with the moving flat plate 15, so that the detector 16 can move along the sliding guide rail 12, the detector 16 can move to different positions and receive rays emitted by different ray heads 10, thus the arrangement of the detector 16 can be reduced, even if a plurality of ray heads 10 exist, only one detector 16 can be arranged to detect the rays of different ray heads 10, thus the functions of dose verification, image guidance and the like can be realized by using fewer detectors 16, a large amount of treatment space is saved, and meanwhile, the acquisition cost and the maintenance cost of the treatment equipment can be greatly reduced by fewer detectors 16.

As shown in fig. 2 and 3, it is exemplified that the treatment apparatus includes two radiation heads 10, one moving plate 15 and one detector 16. Of the two radiation heads 10 shown in fig. 2, the radiation head 10 shown in a rectangular shape is a treatment head 13, and the radiation head 10 shown in a circular shape is an imaging head 14. As shown in fig. 2, the moving plate 15 is movable along the slide rail 12, and the detector is provided on the moving plate 15, and the detector moves along the slide rail 12 along with the moving plate 15. When the movable plate 15 is at the first position 21, the radiation beam emitted by the treatment head 13 is irradiated onto the detector, and when the detector is at the second position 22, the radiation beam emitted by the imaging head 14 is irradiated onto the detector. Therefore, the detector can move to be opposite to the treatment head 13 or the imaging head 14 respectively, and when the detector is positioned at the first position 21 and is opposite to the treatment head 13, the detector can verify the dose of the ray beam emitted by the treatment head 13 after receiving the ray beam emitted by the treatment head 13, or in the treatment process, the detector receives the ray beam emitted by the treatment head 13 and passing through the focus of the human body, so that the area of the focus of the human body is imaged. When the detector is located at the second position 22 and opposite to the imaging head 14, the detector receives the beam emitted by the imaging head 14 and passing through the focus of the human body, and can image the focus area of the human body, so that the detector is used for positioning before treatment or tumor tracking in the treatment process. Certainly, in the treatment process, when the detector is located at the first position 21, the detector can also image the focus area of the human body according to the received radiation beam emitted by the treatment head 13, so that when the detector moves to the second position 22, the detector receives the beam emitted by the imaging head 14 and passing through the focus of the human body, and then the focus area of the human body can be imaged, and further the focus area is imaged from different angles to form a three-dimensional image of the focus.

In this embodiment, fig. 2 shows a specific implementation manner to illustrate the principle and effect of the present invention, and the treatment device provided in this embodiment of the present invention is not limited to the number of the radiation heads and the detectors. In the embodiment of the invention, the treatment head can emit a high-dose radiation beam which penetrates through a focus of a human body and is used for irradiating a tumor at the focus to damage the tissue of the tumor to die, thereby achieving the purpose of treatment. In the present embodiment, the treatment head emits MV-level gamma rays, and may be an accelerator, for example, or include a radiation source, such as cobalt-60, for example. The imaging head can emit a low-dose radiation beam, and the intensity of the radiation beam changes after passing through a focus region of a human body, so that the purpose of determining a tumor image of the focus region according to the intensity of the radiation beam can be achieved. Illustratively, the imaging head is an X-ray tube, which emits X-rays in the KV range. In this embodiment, the number of treatment heads and imaging heads is not limited to one, and a plurality of treatment heads and a plurality of imaging heads may be used. It is also possible to provide two or more of them as treatment heads, or two or more of them as imaging heads, etc. The treatment head, the imaging head, and the like are not particularly limited in the embodiments of the present invention, and the description is given only by way of example.

In the embodiment of the present invention, one or more detectors may be provided, and when there are a plurality of detectors, one detector may be disposed on the moving plate, or a plurality of detectors may be disposed on one moving plate. For example, the detector may include two detectors, one of which is disposed on the moving plate and the other of which is fixed to the drum. At least one, two, three and the like can be arranged on each motion flat plate, and a detector is arranged on each motion flat plate. The number of the detectors arranged on the moving flat plate can be one, or two, three or the like. The stroke length of the sliding guide rail can be set according to the requirement, can be arc-shaped or circumferential, and can be set according to the position required to be reached by the detector.

Preferably, as shown in fig. 2 and 3, in the present application, the detector 16 and the sliding drive unit are disposed inside the drum 11; the sliding guide rail 12 is arc-shaped, and the circle center of the sliding guide rail 12 is overlapped with the circle center of the roller 11. The path that the slide drive unit drives the detector 16 is an arc segment. The center of the sliding guide 12 coincides with the center of the drum 11, so that the moving path of the detector 16 is an arc segment concentric with the drum 11.

In the present embodiment, as shown in fig. 3, the driving device includes a driver 18, a first power portion 19 disposed on the moving plate, and a second power portion 20 disposed on the sliding rail 12, and the first power portion 19 and the second power portion 20 cooperate to drive the moving plate 15 to slide along the sliding rail 12. The driver 18 is then used as a driving power source to drive the moving plate 15 to slide on the sliding guide rail, and the cooperation of the first power portion 19 and the second power portion 20 can ensure the sliding of the moving plate 15. For example, the driver may be an electric motor, a hydraulic power unit, a pneumatic motor, etc., the first power unit may be an output unit at an output end of the electric motor, the hydraulic power unit, the pneumatic motor, etc., such as a gear, a pulley, a slider, etc., and the second power unit may be a gear, a rack, a rail, a slide, etc. engaged with the first power unit. In this embodiment, the driver is fixed on the motion plate, and the driver outputs power to the first power portion, and the first power portion cooperates with the second power portion on the sliding guide rail to drive the motion plate to slide on the sliding guide rail.

As shown in fig. 3, for example, the first power portion 19 includes a first transmission portion 41, the second power portion 20 includes a second transmission portion 42, the first transmission portion 41 is connected to the moving plate 15 and the driver 18, the second transmission portion 42 is disposed on the sliding guide 12, and the driver 18 drives the first transmission portion 41 to move on the second transmission portion 42 and drives the moving plate 15 to slide along the sliding guide 12. In this way, the driver 18 can transmit power to the first transmission part 41 to drive the first transmission part 41 to move on the second transmission part 42, so that the moving plate 15 slides along the sliding guide 12.

In the present embodiment, as shown in fig. 3, for example, the driver 18 may be a motor 23 mounted on the moving plate 15, the first transmission part 41 may be a motor gear 24 mounted on the motor 23, and the second transmission part 42 may be a gear ring 25 disposed on the sliding guide 12, so that the motor 23 outputs power to the motor gear 24, and the motor gear 24 engages with the gear ring 25 to drive the moving plate 15 to move on the sliding guide 12. In this embodiment, the first transmission part 41 may be a pulley, a slider, or the like, and the second transmission part 42 may be a guide rail, a slide rail, or the like, which are merely exemplary and not limited to the specific examples.

As shown in fig. 3, the first power portion 19 further includes a sliding portion 26, the sliding portion 26 is disposed on the moving plate 15, the second power portion 20 further includes a sliding rail portion 27, the sliding rail portion 27 is mounted on the sliding rail 12, and the sliding portion 26 is engaged with the sliding rail portion 27 for relative sliding. The sliding part 26 and the sliding rail part 27 are matched, so that the motion plate 15 can be more stably installed on the sliding guide rail 12, friction can be reduced by sliding the sliding part 26 and the sliding rail part 27, and the required driving torque is small.

As shown in fig. 3 and 4, the sliding part 26 may be a pulley 28, and the sliding rail part 27 may be a sliding rail 29 provided on the sliding rail, such as a flange or a groove, which is engaged with the pulley 28. The pulley is used for sliding, roller friction is adopted between the pulley and the sliding rail part, the friction force is small, the resistance during movement is small, and the driving torque for driving the moving flat plate is small. For example, the sliding rail part 27 may include at least one groove, the groove is disposed on the sliding rail, and the pulley is provided with a flange matching with the groove; or the pulley is provided with at least one groove, the sliding rail part comprises a flange matched with the groove, and the flange is arranged on the sliding guide rail. At least one groove or a plurality of grooves can be arranged on the pulley or the sliding rail part. By adopting the modes, the derailment of the pulley can be prevented, and the matching of the pulley and the sliding rail is more stable.

In this embodiment, set up first transmission portion and sliding part at the motion flat board, set up second transmission portion and slide rail portion on sliding guide, first transmission portion and the cooperation of second transmission portion are as power transmission like this, and the drive motion flat board moves on sliding guide, and sliding part and the cooperation of slide rail portion not only can support the flat stable installation of motion on sliding guide, and the friction between sliding part and slide rail portion is less moreover, make the flat gliding more steady on sliding guide of motion, and is smooth and easy. By adopting the mode, the detector can move to a required position more quickly and accurately, and the working efficiency and the working reliability of the detector are ensured.

In the present embodiment, as shown in fig. 5, the slide rail portion is taken as a flange, and the second transmission portion is taken as a ring gear. The flange and the ring gear may be arranged in such a manner that the ring gear is located outside the flange, or the ring gear is located inside the flange, as shown in fig. 5. In addition, the slide rail part and the slide guide rail can be integrally formed, or the slide rail part can be assembled with the slide guide rail after being separately processed. The second transmission part and the sliding guide rail can be integrally formed, and the second transmission part can also be assembled with the sliding guide rail after being processed.

As shown in fig. 3 and 4, at least one sliding portion 26 is provided on each of both sides of the slide rail 12, and the sliding portions 26 on both sides sandwich the slide rail 12. This makes it possible to hold the slide rail 12 between the sliding portions 26 on both sides of the slide rail 12, and to further stabilize the fixing of the moving plate 15 to the slide rail 12. As shown in fig. 4, for example, at least one pulley 28 may be disposed on each of two sides of the sliding guide rail 12, so that the pulleys 28 on the two sides can clamp and fix the sliding guide rail 12, thereby allowing the moving plate 15 to be more stably mounted on the sliding guide rail 12, and ensuring smooth and reliable movement of the moving plate 15 on the sliding guide rail 12.

In the present embodiment, as shown in fig. 2 and 4, for example, two parallel sliding guide rails 12 are provided, and the moving plate 15 is located between the two sliding guide rails 12, so that the moving plate can be installed more stably. The end of the motion plate 15, which is matched with the sliding guide rail 12, is provided with four pulleys 28, and two sides of the sliding guide rail 12 are provided with two pulleys, so that the motion plate can be more stably arranged on the sliding guide rail, and the stability and reliability of sliding are ensured.

In the present embodiment, as shown in fig. 4, the slide portion 26 is movable with respect to the moving plate 15, for example. Thus, the adjustment is carried out according to the matching condition of the sliding part 26 and the sliding rail part 27, so that the movement adjustment of the detector in the radial direction square of the roller can be carried out in a micro-distance mode. For example, the direction in which the sliding portion 26 is movable may be parallel to the moving direction of the moving plate 15. Referring to fig. 9, taking the example shown in fig. 8 as an example, if the two sliding portions 26 move away from each other (i.e. move upward along the sliding guide 12), the movement of the sliding portions 26 will bring the moving plate 15 close to the axial center of the drum along the radial direction of the drum, i.e. from the position of solid line to the position of dotted line along the radial direction of the drum, because the sliding portions 26 are connected to the moving plate 15.

As shown in fig. 4 and 7, the mount 31 is fixed to the moving plate 15, the sliding portion 26 is provided on the mount 31, and the sliding portion 26 is movable relative to the mount 31. The sliding part 26 is fixed on the moving plate 15 through the mounting seat 31, so that the mounting and dismounting of the sliding part 26 can be facilitated, and the adjustment of the sliding part 26 is also facilitated.

As shown in fig. 6 and 7, the pulley part 26 further includes a pulley seat 30, the pulley 28 is mounted on the pulley seat 30, the pulley seat 30 is mounted on a mounting seat 31, and the pulley seat 30 is movable relative to the mounting seat 31. Therefore, the pulley 28 can be integrally mounted on the pulley seat 30 and then integrally mounted on the mounting seat 31, and assembly is facilitated. As shown in fig. 6 and 7, the mounting seat 31 is provided with a sliding groove 33, and the pulley seat 30 slides along the sliding groove 33. This allows the pulley holder 30 to move within the runner 33 to adjust the pulley holder 30.

In another embodiment of the present invention, preferably, as shown in fig. 7 and 8, the mounting seat 31 is connected to the baffle plate by a locking device, and the pulley seat moves or is fixed in position relative to the mounting seat under the action of the locking device. Preferably, the locking device comprises a first locking device 32 and a second locking device 36, and the first locking device 32 and the second locking device 36 apply force to the pulley seat in opposite directions.

Illustratively, the mounting seat 31 is provided with a baffle 40, and the baffle 40 is provided with a straight hole. The first locking device 32 includes at least a first tensioning screw 34, and one end of the first tensioning screw 34 is connected to the pulley holder 30 and the other end thereof passes through a straight hole of the blocking plate 40. If the straight hole is provided with threads, the first tensioning screw 34 is in threaded connection with the straight hole; alternatively, the first locking device 32 further comprises a first nut 37, and the first tightening screw 34 is fixedly connected to the first nut 37 through a straight hole formed in the baffle plate 40.

The second locking means 36 comprises at least a second tensioning screw 35, one end of which is in contact with the pulley seat 30 and the other end of which passes through a straight hole in the blocking plate 40. If the straight hole is provided with threads, the second tensioning screw 35 is in threaded connection with the straight hole; alternatively, the second locking device further comprises a second nut 37, and the second tightening screw 35 passes through a straight hole on the baffle 40 and is fixedly connected through the second nut 37.

Wherein the first tensioning screw 34 and the second tensioning screw 35 apply forces to the pulley block 30 in opposite directions. Illustratively, as shown in fig. 7 and 8, one end of the first tensioning screw 34 is fixedly connected to the pulley seat 30, for example, by welding or screwing. The other end of the first tensioning screw 34 is secured by a first nut 37 through a straight hole in the stop plate 40 to apply a force to the pulley block 30 in the direction of the arrow to limit movement of the pulley block 30 relative to the mounting block 31. One end of the second tightening screw 35 contacts the pulley holder 30 and applies a force to the pulley holder 30 in a direction indicated by an arrow, and the other end thereof passes through a straight hole of the blocking plate 40. Wherein the blocking plate 40 is provided with a second nut 37 at the position of the connection hole, and the second tightening screw 35 and the second screw 37 can be in threaded connection, so as to limit the movement of the pulley seat 30 relative to the mounting seat 31.

In the embodiment of the present invention, as shown in fig. 7 and 8, since the directions of the acting forces applied to the pulley seat by the first tensioning screw and the second tensioning screw are opposite, the tensioning manner of "pulling one top" by the first tensioning screw and the second tensioning screw is that: the second tensioning screw pushes inwards, the first tensioning screw is pulled outwards, the pulley seat can be limited to not move along the direction of the sliding groove, and finally the two tensioning screws are locked by nuts respectively, so that the pulley and the L-shaped mounting seat on the moving trolley do not have relative displacement. The locking mode enables the distance from the detector arranged on the moving trolley to the treatment head or the bulb instrument to be always constant, the size proportion of the image to be always constant, accurate detection and control of the absorbed dose of the patient can be realized more easily, and a foundation is laid for accurate radiotherapy. The tension members are not limited to screws, and the number of tension members is not limited in the embodiments of the present invention, and the description will be given only by way of example in the drawings.

Further preferably, the first locking device further comprises a protective nut, and the protective nut is connected with the first tensioning screw on the other side of the baffle plate. And/or the second locking device further comprises a protective nut, and the protective nut is connected with the second tensioning screw on the other side of the baffle plate. Referring to fig. 7, taking the example where the first and second locking means each include a protection thread, one protection nut 37 is threadedly coupled to the first tightening screw 34 at the other side of the barrier, and the other protection nut 37 is threadedly coupled to the second tightening screw 35 at the other side of the barrier, thereby restricting the movement of the pulley holder 30. Thus, after the position of the pulley holder 30 is fixed to the slide groove 33, the position of the pulley holder 30 is further fixed, and unexpected positional variation of the pulley holder 30 can be prevented.

Illustratively, as shown in fig. 3, a cover plate 38 is provided on the moving plate 15, the detector 16 is disposed between the moving plate 15 and the cover plate 38, and a through hole 39 is provided on the cover plate 38 to expose the detector 16 for receiving radiation. This allows the detector 16 to follow the motion of the plate 15 and receive radiation.

For example, the detector is mounted on the moving plate by a moving mechanism and can move along the radial direction of the roller. This allows the distance from the moving plate to the center of the drum to be increased or decreased, thereby adjusting the size of the beam on the detector. It should be noted that the moving mechanism can move the detector for a large distance along the radial direction of the roller, and for example, the moving mechanism can be installed on a jacking device between the detector and the moving flat plate. Of course, the moving mechanism may also be located at the side of the detector, and the invention is not limited in particular to the arrangement position of the moving mechanism and the manner of implementing the movement of the detector.

Illustratively, the detector is mounted on the moving plate by a driving mechanism and can move along the axial direction of the roller. Therefore, the position of the detector can be adjusted in the axial direction according to the position of the ray, and the detector can receive the ray more accurately. For example, in the case of a small detector, the detector is significantly smaller than the motion plate, and the detector can also be moved on the motion plate, so that the detector has a greater flexibility. Preferably, as shown with reference to fig. 3, the probe is moved between two sliding guides 12, i.e. in the axial direction of the drum.

In an embodiment of the invention, the treatment device comprises at least one focusing treatment head and at least one conformal treatment head. The treatment device comprises at least one multi-source focusing treatment head and at least one intensity modulated conformal treatment head, for example, the treatment device can comprise one multi-source focusing treatment head and one intensity modulated conformal treatment head, or the treatment device can comprise two multi-source focusing treatment heads and two intensity modulated conformal treatment heads. As shown in fig. 10 and 11, the present application takes an example that the therapeutic apparatus includes a multi-source focusing therapeutic head 01 and a conformal intensity modulation therapeutic head 02 as an example, and fig. 10 and 11 take an example that the multi-source focusing therapeutic head 01 and the conformal intensity modulation therapeutic head 02 are oppositely disposed.

The multi-source focusing treatment head generally means that the treatment head comprises a plurality of radioactive sources, the radioactive sources respectively emit radiation beams, the radiation beams are focused on a focus point, and the focus point corresponds to different areas of a tumor, so that the radiation treatment of the different areas of the tumor is realized. By conformal intensity modulated treatment head is generally meant a treatment head that includes a radiation source that emits a scattered cone beam, a collimator or multi-leaf grating that forms a beam-penetrable region that is similar in shape to the tumor through which the cone beam passes to impinge on the tumor, thereby effecting radiation treatment of the tumor.

For example, as shown in fig. 10 and 11, the multi-source focusing treatment head 01 includes: the plurality of first radiation sources 011, the plurality of radiation sources 011 emit a first radiation beam a1, the first radiation beam a1 is adjustable in the field diameter of the first radiation beam a1 by the collimator 03, and the plurality of first radiation beams a1 are focused on a focal point which irradiates a partial region of a tumor Z1 of a human body. The conformal intensity modulated treatment head 02 comprises a second radiation source 021, the second radiation source 021 emits a scattered cone beam A2, the multi-leaf grating 04 forms a beam traversable area with a shape similar to that of the tumor Z1, and the cone beam A2 passes through the beam traversable area to irradiate the tumor Z1, so that the radiotherapy of the tumor Z1 is realized. Of course, the beam formed by the multi-leaf grating can pass through a wide range of regions, and the conformal treatment can also be performed by forming a region through which the beam irradiating a tumor part can pass.

Of course, the treatment apparatus includes other devices, for example, as shown in fig. 10 and 11, the treatment apparatus includes a base 50, a roller 11, a treatment head, and a treatment couch 60. The base 50 is the foundation of the whole treatment device, and plays a role in bearing and fixing the whole treatment device. The base 50 is provided with a treatment bed 60, and the treatment bed 60 is connected with the base 50 through screws and pins. The treatment couch 60 is used for carrying and fixing a patient, and can accurately convey the disease of the patient to a designated position of the treatment equipment. The base 50 is also provided with a roller 11, the roller 11 is connected with the base 50 through a rolling support, and the rotation of the roller around the axis is realized through gear transmission.

In the embodiment of the invention, the multi-source focusing treatment head and/or the conformal intensity modulation treatment head continuously swings around the focal point on the axial plane of the roller so as to realize non-coplanar focusing and/or conformal treatment at different incidence angles. Illustratively, the multi-source focusing treatment head and/or the intensity modulated conformal treatment head are connected with the roller through a circular arc guide rail, so that the multi-source focusing treatment head and/or the intensity modulated conformal treatment head continuously swing around a focus on an axial plane of the roller.

In an embodiment of the present invention, the radiotherapy apparatus further comprises a dynamic image guidance system, wherein the dynamic image guidance system comprises one or two sets of stereoscopic imaging devices forming a fixed angle, and the stereoscopic imaging devices are used for detecting the body position or the spatial position of the focus of the patient. Illustratively, the included angle between two imaging devices in the stereoscopic imaging device is 20 ° to 160 °, and the stereoscopic imaging device includes an X-ray generator and an image detection and acquisition system.

According to one embodiment of the present invention, a method of driving a treatment apparatus is disclosed, the treatment apparatus comprising at least a first and a second radiation head; the driving method comprises the following steps:

the driving device drives the moving flat plate to slide to a first position along the sliding guide rail so as to receive the radiation beam emitted by the first ray head at the first position;

the driving device drives the moving plate to slide to a second position along the sliding guide rail so as to receive the radiation beam emitted by the first ray head and/or the second ray head at the second position.

By adopting the mode, fewer detectors can be used to move to the first position to receive the radiation beam of the first ray head and to the second position to receive the radiation beam of the second ray head under the driving of the driving device, and certainly, the radiation beams of other ray heads can also be moved to other positions to receive the radiation beams of other ray heads, so that the better detectors can be used in the treatment equipment to realize the functions of dose verification, image guidance and the like, a large amount of treatment space is saved, and the acquisition cost and the maintenance cost of the treatment equipment can be greatly reduced by fewer detectors.

Exemplary, the method further comprises: and adjusting the first locking device to enable the sliding part to move relative to the moving plate. Therefore, when the sliding part needs to be adjusted, the adjustment can be carried out according to the matching condition of the sliding part and the sliding rail part, and the sliding guide rail can be adapted to different sliding guide rails.

Illustratively, the method further comprises: the driving structure drives the detector to move on the moving flat plate along the axial direction of the roller. Therefore, the position of the detector can be adjusted in the axial direction according to the position of the ray, and the detector can receive the ray more accurately.

Illustratively, the method further comprises: the moving mechanism drives the moving flat plate to move along the radial direction of the roller so as to increase or decrease the distance from the moving flat plate to the center of the roller. This allows the distance from the moving plate to the center of the drum to be increased or decreased, thereby adjusting the size of the beam on the detector.

Illustratively, the first and second radiation heads are both MV-grade treatment heads.

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims

1. The therapeutic equipment is characterized by comprising a roller, a detector and a sliding driving unit, wherein the sliding driving unit comprises a sliding guide rail, a driving device and a moving flat plate, the detector is fixed on the moving flat plate, and the moving flat plate drives the detector to slide along the sliding guide rail under the driving of the driving device;

the driving device comprises a driver, a first power part arranged on the moving flat plate and a second power part arranged on the sliding guide rail, and the first power part and the second power part are matched to drive the moving flat plate to slide along the sliding guide rail;

the first power part comprises a sliding part, the sliding part is connected with the motion flat plate, the second power part further comprises a sliding rail part, the sliding rail part is installed on the sliding guide rail, and the sliding part is matched with the sliding rail part and slides relatively;

the sliding part is movable relative to the moving flat plate so as to perform movement adjustment on the detector in the radial direction of the roller;

at least one sliding part is arranged on each of two sides of the sliding guide rail, and the sliding parts on the two sides clamp the sliding guide rail;

the motion flat plate is fixed with a mounting seat, the sliding part is arranged on the mounting seat, and the sliding part can move relative to the mounting seat.

2. The therapeutic apparatus according to claim 1, wherein the first power unit comprises a first transmission unit, the second power unit comprises a second transmission unit, the first transmission unit is connected to the moving plate and the driver, respectively, the second transmission unit is disposed on the sliding guide, and the driver drives the first transmission unit to move on the second transmission unit and drives the moving plate to slide along the sliding guide.

3. A treatment device according to claim 1, wherein the sliding part comprises a pulley which slides in cooperation with the sliding rail part.

4. A treatment device according to claim 3, wherein the sliding track portion comprises at least one groove provided on the sliding track, the pulley wheel being provided with a flange cooperating with the groove; or the pulley is provided with at least one groove, the sliding rail part comprises a flange matched with the groove, and the flange is arranged on the sliding guide rail.

5. A treatment device according to claim 3, wherein the sliding portion further comprises a pulley block on which the pulley is mounted, the pulley block being mounted on the mounting block, the pulley block being movable relative to the mounting block.

6. A treatment device according to claim 5, wherein the mounting block is provided with a sliding slot, and the pulley block slides along the sliding slot.

7. A treatment device according to claim 6, wherein the mounting base is provided with locking means, and the pulley base is movable or positionally fixed relative to the mounting base by the locking means.

8. A treatment device according to claim 7, wherein the locking means comprises first and second locking means, the first and second locking means applying force to the pulley seat in opposite directions.

9. The therapeutic apparatus according to claim 8, wherein the mounting base is provided with a baffle plate, and the baffle plate is provided with a straight hole;

the first locking device at least comprises a first tensioning screw, one end of the first tensioning screw is connected with the mounting seat, the other end of the first tensioning screw penetrates through a straight hole in the baffle plate, and the first tensioning screw is in threaded connection with the straight hole or is fixed with the baffle plate through a first nut;

the second locking device at least comprises a second tensioning screw, one end of the second tensioning screw is in contact with the mounting seat, the other end of the second tensioning screw penetrates through a straight hole in the baffle plate, and the second tensioning screw is in threaded connection with the straight hole, or the second tensioning screw is fixed with the baffle plate through a second nut.

10. A treatment device according to claim 9, wherein the first locking means further comprises a protective nut connected to the first tensioning screw on the other side of the shield;

and/or the second locking device further comprises a protective nut, and the protective nut is connected with the second tensioning screw on the other side of the baffle plate.

11. A treatment device according to claim 1, wherein the motion plate is provided with a cover plate, the detector is arranged between the motion plate and the cover plate, and the cover plate is provided with a through hole to expose the detector for receiving radiation.

12. A treatment device according to claim 1, wherein the detector is mounted on the moving plate by a moving mechanism so as to be movable in a radial direction of the drum.

13. A treatment device according to claim 1, wherein the detector is mounted on the movable plate by a drive mechanism for movement in the axial direction of the drum.

14. A treatment device according to claim 1, wherein the detector and the sliding drive unit are arranged inside the drum;

the sliding guide rail is arc-shaped, and the circle center of the sliding guide rail is overlapped with that of the roller.