WO2022170602A1 - Châssis, dispositif de radiothérapie et dispositif d'imagerie - Google Patents

Châssis, dispositif de radiothérapie et dispositif d'imagerie Download PDF

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Publication number
WO2022170602A1
WO2022170602A1 PCT/CN2021/076601 CN2021076601W WO2022170602A1 WO 2022170602 A1 WO2022170602 A1 WO 2022170602A1 CN 2021076601 W CN2021076601 W CN 2021076601W WO 2022170602 A1 WO2022170602 A1 WO 2022170602A1
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WO
WIPO (PCT)
Prior art keywords
frame
mounting portion
collimator
rack
radiotherapy
Prior art date
Application number
PCT/CN2021/076601
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English (en)
Chinese (zh)
Inventor
刘海峰
Original Assignee
西安大医集团股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 西安大医集团股份有限公司 filed Critical 西安大医集团股份有限公司
Priority to PCT/CN2021/076601 priority Critical patent/WO2022170602A1/fr
Priority to CN202180091823.8A priority patent/CN116801947A/zh
Publication of WO2022170602A1 publication Critical patent/WO2022170602A1/fr

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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

Definitions

  • the present disclosure relates to the technical field of medical devices, and in particular, to a gantry, radiotherapy equipment and imaging equipment.
  • Cancer has become the main killer endangering human health and one of the major diseases threatening the health of our nation. Radiation therapy is still one of the main methods for the treatment of malignant tumors, and about 65%-70% or higher proportion of tumor patients need to receive different degrees of radiation therapy.
  • Stereotactic radiotherapy is to focus multiple beams of rays on one position (ie target), which can achieve high-dose irradiation of the target, so as to achieve the purpose of treatment.
  • Stereotactic radiotherapy is suitable for small-volume tumors; conformal intensity-modulated radiotherapy is achieved through The multi-leaf collimator performs conformal processing on the rays, so that the shape of the field is consistent with the shape of the tumor, so that the tumor can be fully treated with radiotherapy.
  • Conformal intensity-modulated radiotherapy is suitable for large-volume tumors.
  • the present disclosure provides a rack:
  • the frame includes a frame body, the frame body includes a fixed frame and a rotating frame, the fixed frame swings around a swing axis; the rotating frame is rotatably mounted on the fixed frame, and It swings around the swing axis synchronously with the fixed frame; wherein, the rotation axis of the rotating frame intersects the swing axis.
  • the swing axis is perpendicular to the rotation axis of the rotating frame.
  • the rotating frame includes a first mounting portion and a second mounting portion, the first mounting portion is rotatably mounted on the fixed frame for mounting the multiplexed ray source; the second mounting portion For installing the first collimator and the second collimator; wherein, the first installation part and the second installation part can move relative to each other, when the first collimator or the second collimator When docked with the multiplexed ray source, the first mounting portion and the second mounting portion can also rotate synchronously relative to the fixing frame around the rotation axis.
  • the first mounting portion rotates about the rotation axis relative to the second mounting portion; alternatively, the second mounting portion rotates relative to the first mounting portion about the rotation axis; Alternatively, the first mounting portion and the second mounting portion rotate about the rotation axis at different rates and/or different directions.
  • the first mounting portion is a ring frame or a C-shaped frame
  • the second mounting portion is a ring frame or a C-shaped frame
  • the rotating frame further includes a locking structure that locks the first mounting portion and the second mounting portion.
  • the rotating frame and the fixed frame synchronously swing around the swing axis within a range of -40° ⁇ +40°.
  • the rotating frame rotates counterclockwise or clockwise about the axis of rotation.
  • the rack further includes a base disposed at the bottom of the rack body, the fixing frame is rotatably connected to the base, and the fixing frame swings around the base relative to the base Axis swings.
  • the rack further includes a support frame, which is rotatably connected to the fixing frame for supporting the rack body.
  • the support frame includes a top plate and a plurality of support columns
  • the top plate is disposed on the top of the rack body, and is rotatably connected to the fixing frame, and the fixing frame surrounds the support frame relative to the support frame.
  • the swing axis swings; the plurality of support columns are arranged below the top plate for supporting the top plate.
  • the rack further includes a driving device, and the driving device is used to drive the rotating frame to rotate relative to the fixed frame, and to drive the rotating frame and the fixed frame to rotate around the fixed frame synchronously.
  • the swing axis swings.
  • the present disclosure provides a radiation therapy apparatus:
  • the radiotherapy apparatus includes a radiotherapy head and the gantry according to any of the above embodiments, the radiotherapy head being disposed on the rotating gantry.
  • the radiotherapy head comprises a stereotaxic head and/or a conformal intensity modulated head.
  • the radiotherapy head includes a multiplexed radiation source, a first collimator, and a second collimator
  • the multiplexed ray source is used for emitting rays and is installed on the first installation part;
  • the first collimator is used for beam limiting the rays and installed on the second installation part;
  • the second collimator is used to limit the beam, and is installed on the second installation part.
  • the first collimator is a channel collimator
  • the second collimator is a single-layer or multi-leaf collimator.
  • the multiplexed ray source is an X-ray source.
  • the swing axis passes through an isocenter of the radiation therapy device.
  • the radiotherapy apparatus further includes an imaging device including an imaging source and an imager, the imaging source and the imager being mounted on the rotating gantry.
  • the present disclosure provides an imaging device:
  • the imaging apparatus includes an imaging device and a gantry as described in any of the above embodiments, the imaging device including an imaging source and an imager, the imaging source and the imager being mounted on the on the rotating frame.
  • FIG. 1 is a structural diagram of a frame according to some embodiments (the fixing frame is not oscillated);
  • FIG. 2 is another structural diagram of a frame according to some embodiments (fixed frame swing setting angle);
  • FIG. 3 is a schematic diagram of two treatment planes formed before and after swinging of the fixture according to some embodiments
  • Fig. 4A is the B-B sectional view of the structure in Fig. 12;
  • 4B is a schematic diagram of a fixed frame and a rotating frame respectively located at a first limit position and a second limit position according to some embodiments;
  • FIG. 5 is another structural diagram of a frame according to some embodiments (the fixing frame is not oscillated);
  • FIG. 6 is another structural diagram of a frame according to some embodiments (fixed frame swing setting angle);
  • FIG. 7 is a schematic diagram of the mating of a base and a turntable according to some embodiments.
  • FIG. 8 is a block diagram of a base according to some embodiments.
  • Fig. 9 is the A-A sectional view of the structure in Fig. 7;
  • FIG. 10 is yet another structural diagram of a rack according to some embodiments.
  • Figure 11 is a side view of the structure in Figure 10;
  • FIG. 12 is a schematic diagram of the cooperation of the fixing frame, the first mounting portion and the second mounting portion according to some embodiments;
  • FIG. 13 is yet another structural diagram of a rack according to some embodiments.
  • FIG. 14 is a block diagram of a radiation therapy apparatus according to some embodiments.
  • 15 is a block diagram of an imaging apparatus according to some embodiments.
  • first and second are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Thus, a feature defined as “first” or “second” may expressly or implicitly include one or more of that feature.
  • plural means two or more.
  • orientation or positional relationship indicated by “outside” is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the indicated device or element must have a specific orientation, It is constructed and operated in a particular orientation and therefore should not be construed as a limitation of the present disclosure.
  • the terms “installed”, “connected” and “connected” should be understood in a broad sense, for example, it may be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two elements.
  • installed e.g., it may be a fixed connection, a detachable connection, or an integral connection. It can be directly connected, or indirectly connected through an intermediate medium, and it can be internal communication between two elements.
  • At least one of A, B, and C has the same meaning as “at least one of A, B, or C”, and both include the following combinations of A, B, and C: A only, B only, C only, A and B , A and C, B and C, and A, B, and C.
  • a and/or B includes the following three combinations: A only, B only, and a combination of A and B.
  • the radiotherapy head is mounted on a rotating frame in a gantry, and rotates together with the rotating frame, so as to perform radiotherapy on a tumor patient's target. Because the rotating frame rotates around the fixed axis of rotation, the radiotherapy head also rotates around the fixed axis of rotation. Then, for a certain radiation source of the radiotherapy head, the beam emitted by it is always in the same treatment position during one rotation. in plane. The beam emitted by the radiation source passes through the skin around the target to irradiate the target. Because radiation therapy is a continuous process, the skin irradiated by the beam will be irradiated for a long time, and the damage will be more serious.
  • the present disclosure provides a rack 01 , the rack 01 includes a rack body 100 , and the rack body 100 includes a fixed frame 1 and a rotating frame 2 , and the fixed frame 1 is about a swing axis 3 swings (in the direction of the solid line arrow described in Figure 2), the rotating frame 2 is rotatably mounted on the fixed frame 1, and swings around the swing axis 3 synchronously with the fixed frame 1; wherein, as shown in Figure 2, the rotating frame 2 The rotational axis 24 intersects the pivot axis 3 .
  • the rotating frame 2 may be an annular frame, the axis of the rotating frame 2 is the rotation axis 24 relative to the fixed frame 1 , and the inner cavity of the rotating frame 2 forms a treatment cavity 21 for treatment.
  • the rotating frame 2 is used to install the radiotherapy head 4 and can drive the radiotherapy head 4 to rotate around its rotation axis 24 within a range of 360°.
  • the patient 5 lies on the treatment couch 6 and is sent into the treatment cavity 21 of the rotating frame 2 , and then the rotating frame 2 drives the radiotherapy head 4 to treat the patient 5 .
  • the treatment plane enclosed by the first contour line 7 is defined as the first treatment plane
  • the treatment plane enclosed by the second contour line 8 is defined as the second treatment plane
  • the target radiation source will irradiate the target point from the skin at different positions.
  • the treatment plane of a certain target ray source in the radiotherapy head 4 is changed by swinging the fixed frame 1 and the rotating frame 2, so that The radiation used for radiation therapy passes through the skin at more positions to reach the target point, so that the irradiation time for the skin at the same position will be shortened, and the degree of damage to the skin by the radiation will also be reduced.
  • the above-mentioned treatment plane refers to the range area touched by the radiation beam emitted by the target radiation source in the radiotherapy head 4 when it rotates around the rotation axis 24 .
  • the radiation emitted by the target radiation source in the radiotherapy head 4 installed on the rotating frame 2 can still irradiate the target point of the patient 5, the fixed frame 1 and the rotating frame 2 swing around synchronously.
  • the treatment couch 6 it may be necessary to move the treatment couch 6 so that the radiation emitted by the target radiation source in the radiotherapy head 4 can irradiate the target point of the patient 5 .
  • the swing axis 3 can be set to be perpendicular to the rotation axis 24 of the rotating rack 2 .
  • the pivot axis 3 lies in a plane perpendicular to the rotation axis 24 .
  • the rotating frame 2 may include a first mounting portion 22 and a second mounting portion 23 .
  • the first mounting portion 22 is rotatably mounted on the fixing frame 1 , and the first mounting portion 22 is used for mounting the multiplexed radiation source 9 .
  • the second mounting portion 23 is used for mounting the first collimator 10 and the second collimator 20 .
  • the first mounting portion 22 and the second mounting portion 23 can move relative to each other.
  • the first mounting portion 22 and the second mounting portion 23 can also rotate synchronously relative to the fixed frame 1 around the rotation axis 24 of the rotating frame 2 .
  • the first collimator 10 and the multiplexed radiation source 9 can be docked to form a radiotherapy head, and the second collimator can also be The straightener 20 is docked with the multiplexed radiation source 9 to form another radiotherapy head.
  • the radiotherapy equipment using the gantry 01 provided by the present disclosure is provided with two radiotherapy heads, because the two radiotherapy heads can share one multiplexed ray source 9, it is equivalent to reducing two radiotherapy heads.
  • the above-mentioned multiplexed ray source 9 may be an X-ray source, specifically an X-ray accelerator.
  • the above-mentioned first collimator 10 may be a channel collimator
  • the second collimator 20 may be a single-layer multi-leaf collimator or a multi-layer multi-leaf collimator.
  • X-ray accelerators, channel collimators, single-layer multi-leaf collimators and multi-layer multi-leaf collimators are existing mature technologies, X-ray accelerators, channel collimators, single-layer multi-leaf collimators are not repeated here. The specific structure and working process of the collimator and the multilayer multi-leaf collimator.
  • first mounting portion 22 moves relative to the second mounting portion 23
  • first installation part 22 may rotate relative to the second installation part 23 around the rotation axis 24 of the revolving frame 2, that is, the second installation part 23 is fixed and only the rotation of the first installation part 22 is controlled.
  • the first collimator 10 or the second collimator 20 can be docked with the multiplexed ray source 9 .
  • the second mounting portion 23 may rotate relative to the first mounting portion 22 around the rotation axis 24 of the revolving frame 2, that is, the first mounting portion 22 is fixed and only the rotation of the second mounting portion 23 is controlled.
  • the first collimator 10 or the second collimator 20 can be docked with the multiplexed ray source 9 .
  • first mounting portion 22 and the second mounting portion 23 may also rotate around the rotation axis 24 of the rotating frame 2 at different speeds and/or different directions.
  • first mounting portion 22 rotates counterclockwise around the rotation axis 24 of the rotating frame 2
  • the second mounting portion 23 can rotate clockwise around the rotating axis 24 of the rotating frame 2.
  • the first mounting portion 22 In the process of rotating with the second mounting portion 23, the first collimator 10 or the second collimator 20 can be docked with the multiplexed ray source 9, or, the first mounting portion 22 and the second mounting portion 23 rotate in the same direction, but the angular velocities of the two are different, then during the rotation of the first mounting part 22 and the second mounting part 23, the first collimator 10 or the second collimator 20 and the multiplexed ray source can also be made 9 Docking.
  • first mounting portion 22 and the second mounting portion 23 can also achieve relative movement through sliding fit, for example, a slide rail is provided between the first mounting portion 22 and the second mounting portion 23, which may be the first mounting portion 22 and the second mounting portion 23.
  • the mounting portion 22 is fixed and the second mounting portion 23 slides relative to the first mounting portion 22 along the slide rail.
  • the second mounting portion 23 may be fixed and the first mounting portion 22 is relative to the second mounting portion along the slide rail. 23 sliding, as long as it is ensured that the first collimator 10 and the second collimator 20 can be docked with the multiplexed ray source 9 during the relative sliding of the first mounting part 22 and the second mounting part 23 .
  • the first mounting portion 22 may be a ring frame or a C-shaped frame
  • the second mounting portion 23 may be a ring frame or a C-shaped frame.
  • the first mounting portion 22 and the second mounting portion 23 are both annular frames, and the second mounting portion 23 is at least partially located in the first mounting portion 22 .
  • the two collimators 20 are mounted on the portion of the second mounting portion 23 located in the first mounting portion 22 .
  • the first mounting portion 22 may also be a C-shaped frame
  • the second mounting portion 23 may also be a C-shaped frame.
  • the present disclosure does not make any specific shapes of the first mounting portion 22 and the second mounting portion 23 . limited.
  • the rotating frame 2 and the fixed frame 1 swing synchronously around the swing axis 3 within the range of -40° to +40°.
  • the fixed frame 1 and the rotating frame 2 can swing ⁇ ° from the first limit position a1 to the second limit position a2, and the value of ⁇ is 80.
  • -40° ⁇ +40° is the limit value range of the swing of the fixed frame 1 and the rotating frame 2.
  • the swing angle of the fixed frame 1 and the rotating frame 2 only needs to be in the range of -40° ⁇ +40° It can be within the range, such as -35° ⁇ +35°, or -30° ⁇ +30°, all can be used.
  • the rotating frame 2 rotates counterclockwise or clockwise around the rotation axis 24 . That is, the rotating frame 2 can rotate clockwise around the rotation axis 24, and can also rotate counterclockwise around the rotation axis 24, which can be selected according to the actual situation. In some embodiments, the rotating frame 2 may only be able to rotate clockwise around the rotation axis 24 , or only be able to rotate counterclockwise around the rotation axis 24 , both of which may be used.
  • the rack 01 may further include a base 30 , the base 30 is disposed at the bottom of the rack body 100 , the fixing frame 1 is rotatably connected to the base 30 , and the fixing frame 1 is relative to the base 30 .
  • the seat 30 swings about the swing axis 3 . The following describes how the fixing frame 1 swings with respect to the base 30 .
  • the rotational cooperation between the fixing frame 1 and the base 30 is described by taking the swing axis 3 extending along the X direction shown in FIG. 1 as an example.
  • a turntable 40 is rotatably mounted on the base 30
  • the turntable 40 is rotatably mounted on the base 30 through the first bearing 50 as shown in FIG. 9 .
  • the base 30 is provided with a base mounting hole 301
  • the axis of the base mounting hole 301 is collinear with the swing axis 3 .
  • the turntable 40 and the first bearing 50 are installed in the base installation hole 301 .
  • the turntable 40 includes a large-diameter section 401 and a small-diameter section 402 whose axes extend in the X direction.
  • the abutment forms a downward turntable step surface.
  • the outer ring of the first bearing 50 is in interference fit with the hole wall surface of the base mounting hole 301
  • the outer peripheral surface of the small diameter section 402 of the turntable 40 is in interference fit with the inner ring of the first bearing 50
  • the step surface of the turntable is supported on the On the end face of the first bearing 50 facing the large diameter section 401
  • the other end face of the first bearing 50 fits with the bottom of the base mounting hole 301 , so that the turntable 40 can rotate relative to the base 30 around its axis.
  • the rotation connection between the fixing frame 1 and the base 30 can also be realized in other ways.
  • the fixing frame 1 and the base 30 are connected by a rotating shaft, and the rotating shaft passes through the fixing frame 1 and the base 30.
  • the axis of the rotating shaft is collinear with the swing axis 3, and the fixed frame 1 can swing around the rotating shaft.
  • the fixing frame 1 is a ring frame
  • the fixing frame 1 is fixedly installed on the turntable 40 through the mounting plate 60 and the supporting fastening bolts 70 , so that the fixing frame 1 is installed on the turntable 40 , so that the fixing frame 1 can rotate relative to the base 30 together with the turntable 40 .
  • the fixing frame 1 is rotatably connected to the base 30, and the base 30 can not only be used to support the fixing frame 1, but also rotate relative to the fixing frame 1, so that the overall stability of the rack 01 is better.
  • the rack 01 further includes a support frame 80, which is rotatably connected to the fixing frame 1 for supporting the rack body 100 .
  • the support frame 80 is rotatably connected with the fixed frame 1, and the rotation axis of the support frame 80 and the fixed frame 1 is collinear with the swing axis 3, then when the fixed frame 1 swings around the swing axis 3, the base 30 is used to support and install the fixed frame 1 , the support frame 80 is used to support the fixing frame 1, thereby making the whole frame 01 more stable when the fixing frame 1 swings.
  • the support frame 80 includes a top plate 801 and a plurality of support columns 802.
  • the top plate 801 is disposed on the top of the rack body 100 and is rotatably connected to the fixing frame 1, and the fixing frame 1 is relative to the supporting frame. 80 oscillates about the oscillating axis 3 .
  • a plurality of support columns 802 are disposed under the top plate 801 for supporting the top plate 801 .
  • a connecting rod 90 is welded and fixed on the top of the fixing frame 1 , the axis of the connecting rod 90 is collinear with the swing axis 3 , and the connecting rod 90 is rotatably connected with the top plate 801 , so that the fixing frame 1 and the Rotational connection of the top plate 801.
  • the rack 01 further includes a driving device, and the driving device is used to drive the rotating frame 2 to rotate relative to the fixed frame 1 and to drive the rotating frame 2 and the fixed frame 1 to synchronously swing around the swing axis 3 .
  • the driving device may include a first driving motor 200 fixed on the lower side of the top plate 801 with its output shaft facing downward.
  • the axis of the output shaft of the first drive motor 200 is collinear with the axis of the connecting rod 90 , and the output shaft of the first driving motor 200 is drivingly connected with the connecting rod 90 and can drive the connecting rod 90 to rotate around its axis, so as to realize the driving of the fixed frame 1 turn.
  • the first driving motor 200 can also be replaced by other driving mechanisms, such as a hydraulic motor, which can also be used.
  • the driving device further includes a second driving motor 300 , and the second driving motor 300 is used to drive the rotating frame 2 to rotate around the rotation axis 24 . 22.
  • the second mounting portion 23 and the fixing frame 1 are both annular frames as an example to illustrate that the second driving motor 300 drives the rotating frame 2 to rotate.
  • the first installation part 22 is rotatably installed in the fixing frame 1
  • the second installation part 23 is also rotatably installed in the fixing frame 1
  • the second installation part 23 also passes through the inner cavity of the first installation part 22
  • the fixing frame 1 , the first installation part 22 and the second installation part 23 are arranged concentrically, that is, the three structural axes are collinear, and the structural axis simultaneously constitutes the rotation axis 24 of the first installation part 22 and the second installation part 23 .
  • the following describes how the first mounting portion 22 and the second mounting portion 23 are mounted on the fixing frame 1 .
  • two first mounting seats 400 may be provided in the inner cavity of the fixing frame 1 , and the two first mounting seats 400 are arranged at intervals along the axial direction of the fixing frame 1 .
  • a mounting hole coaxial with the fixing frame 1 is provided, a second bearing 500 is mounted in the mounting hole, and the first mounting portion 22 is rotatably mounted on the two first mounting seats 400 through the two second bearings 500 around its structural axis. Then, it can be rotated and installed in the fixing frame 1 .
  • two second mounting bases 600 may also be provided in the inner cavity of the fixing frame 1 , and the two second mounting bases 600 are arranged at intervals along the axial direction of the fixing frame 1 and are separated into two second mounting bases 600 .
  • the two second mounting seats 600 are provided with mounting holes coaxial with the fixing frame 1, the third bearing 700 is mounted in the mounting holes, and the second mounting portion 23 passes through the two third The bearing 700 is rotatably mounted on the two second mounting seats 600 around its structural axis, so as to be rotatably mounted in the fixing frame 1 .
  • a driving gear 800 is fixedly mounted on one end of the second mounting portion 23 , and the output shaft of the second driving motor 300 is provided with a driving gear 800 engaged with the driving gear 800 .
  • the fixed gear 900 is fixed, and the second driving motor 300 drives the second mounting part 23 to rotate through the fixed gear 900 and the driving gear 800 .
  • a first annular protrusion 1000 is provided at one end of the second mounting portion 23 close to the driving gear 800, and the end of the first mounting portion 22 corresponds to the first annular protrusion 1000.
  • the annular protrusion 1000 is provided with a second annular protrusion 2000 . After the first installation portion 22 and the second installation portion 23 are installed, the first annular protrusion 1000 and the second annular protrusion 2000 are mutually in the axial direction of the fixing frame 1 . fit.
  • the first annular protrusion 1000 and the second annular protrusion 2000 are correspondingly provided with connecting holes extending along the axial direction of the fixing frame 1 , which can be inserted into the first annular protrusion through the pin shaft 3000 at the same time.
  • the protrusions 1000 and the second annular protrusions 2000 are in the corresponding connection holes, so as to realize the anti-rotation of the first mounting portion 22 and the second mounting portion 23, and then the second driving motor 300 can drive the second mounting portion 23 to rotate.
  • the first installation part 22 is driven to rotate, that is, the second drive motor 300 can drive the first installation part 22 and the second installation part 23 to rotate around the rotation axis 24 synchronously.
  • a baffle plate 30001 is provided at one end of the pin shaft 3000, a through hole is arranged on the baffle plate 30001, and at the same time the first annular
  • the protrusion 1000 is provided with a threaded hole corresponding to the through hole, and a fixing bolt 4000 is used to pass through the through hole and then screw into the threaded hole to press and fix the baffle plate 30001 on the first annular protrusion 1000 .
  • an avoidance hole (not shown in the figure) is provided on the second mounting seat 600 at a position corresponding to the connection hole on the first annular protrusion 1000, and the avoidance hole allows the operator's hand to pass through to install the pin Axis 3000.
  • the fixing frame 1 is divided into the upper part 11 of the ring frame and the lower part 12 of the ring frame by the horizontal plane where the axis thereof is located.
  • the mounting seat 400 and the second mounting seat 600 are also divided into upper and lower parts by the above-mentioned horizontal plane.
  • the upper part of the first installation seat 400 and the second installation seat 600 can be fixed on the upper part 11 of the ring frame, and the lower part of the first installation seat 400 and the second installation seat 600 can be fixed on the lower part of the ring frame 12 on.
  • the upper part 11 of the ring frame and the lower part 12 of the ring frame are correspondingly provided with mounting ears 13, and the corresponding mounting ears 13 are fixed together by locking bolts 14 and locking nuts 15, so as to fix the upper part 11 of the ring frame and the lower part 12 of the ring frame on the Together.
  • the fixing frame 1 may not be a ring frame.
  • the fixing frame 1 may be a C-shaped frame, including two mutually parallel supporting plates 16 and a connecting plate 17 connecting the two supporting plates 16 , the two support plates 16 are arranged in the up-down direction, the lower support plate 16 is rotatably connected to the base 30, so as to realize the swing of the fixed frame 1, and the rotating frame 2 is arranged between the two support plates 16, and is rotatably installed On the lower support plate 16, the same can be used.
  • the first installation part 22 may also have a separate driving mechanism, for example, the first installation part 22 is rotatably installed in the inner cavity of the fixing frame 1, and the end of the first installation part 22 is provided with a first power gear, It is driven by the first power motor provided with the matching gear on the output shaft, the second mounting part 23 is rotatably installed in the inner cavity of the first mounting part 22, and the end of the second mounting part 23 is provided with a second power gear, and The output shaft is driven by a second power motor with a matching gear.
  • the second power motor is fixed in the inner cavity of the first mounting portion 22, and the second power motor is only used to drive the second mounting portion 23 relative to the first mounting portion.
  • the present disclosure also provides a radiotherapy apparatus, as shown in FIG. 1 , the radiotherapy apparatus includes the above-mentioned gantry 01 and a radiotherapy head, and the radiotherapy head is installed on the rotating frame 2 in the gantry 01 .
  • the radiotherapy equipment includes the above-mentioned gantry 01, so it can solve the same technical problem and achieve the same technical effect, which will not be repeated here.
  • the radiotherapy head may include a stereotaxic treatment head 41 and a conformal intensity modulated treatment head 42 .
  • the stereotactic treatment head 41 and the conformal intensity modulated treatment head 42 are arranged around the circumference of the rotating frame 2.
  • the operator can select the stereotactic treatment head 41 and the conformal treatment head 41 according to the specific conditions of the patient 5.
  • One or two of the intensity modulated treatment heads 42 treat the patient 5, so that the treatment is more targeted and the effect is better, and at the same time, the adaptability of the radiotherapy equipment is better.
  • the radiotherapy head may also include only one of the stereotaxic treatment head 41 and the conformal intensity modulated treatment head 42, which can also be used.
  • the radiotherapy head can also be of other types, all of which can be used.
  • the rotating frame 2 when at least two different types of radiotherapy heads need to be installed on the rotating frame 2, in order to reduce the weight that the whole frame 01 needs to carry, as shown in FIG. 4A, the rotating frame 2 includes a first installation
  • the first mounting portion 22 and the second mounting portion 23 are rotatably mounted on the fixing frame 1, the first mounting portion 22 and the second mounting portion 23 can move relative to each other, and the first mounting portion 22 and the second mounting portion 23 also It can rotate synchronously relative to the fixed frame 1 around the rotation axis 24 of the rotating frame 2 .
  • the radiotherapy head may include a multiplexed radiation source 9 , a first collimator 10 and a second collimator 20 , the multiplexed radiation source 9 is used for emitting radiation, and the multiplexed radiation source 9 is installed on the first installation part 22 .
  • the first collimator 10 is used for beam-limiting rays and is installed on the second installation part 23 ; the second collimator 20 is used for beam-limiting rays and is installed on the second installation part 23 .
  • the first collimator 10 and the multiplexed radiation source 9 can be docked to form a radiotherapy head, and the second collimator can also be The straightener 20 is docked with the multiplexed radiation source 9 to form another radiotherapy head.
  • two radiotherapy heads are installed on the rotating frame 2 , but because the two radiotherapy heads share one multiplexed radiation source 9 , the weight carried by the gantry 01 is reduced.
  • the above-mentioned multiplexed ray source 9 is an X-ray source, specifically an X-ray accelerator.
  • An X-ray accelerator generally includes an electron gun, an accelerating tube, a tungsten target, a microwave feeding device and other components, because the X-ray accelerator is an existing mature technology, and its specific structure and working process will not be repeated here.
  • the above-mentioned first collimator 10 can be a channel collimator, and the channel collimator can include multiple beam channels with different apertures, or a single beam channel with adjustable shape and size (aperture), and can also include only one size. (aperture) and non-adjustable channel shape, the channel collimator is used to generate a single narrow X-ray beam, the channel collimator is a mature prior art (also called beam limiter), and its specific structure and working process will not be repeated here. .
  • the above-mentioned second collimator 20 is a single-layer multi-leaf collimator or a multi-layer multi-leaf collimator.
  • the multi-leaf collimator is used to form a field with the same shape and size as the tumor, and the multi-leaf collimator is a mature existing collimator. technology, and its specific structure and working process will not be repeated here.
  • the multiplexed radiation source 9 can also be other types of radiation sources, such as a cobalt-60 radiation source, which can also be used.
  • the first collimator 10 and the second collimator 20 may also be other collimators, as long as they can cooperate with the multiplexed radiation source 9 to form a radiotherapy head for treating the patient 5 .
  • the swing axis 3 of the fixture 1 is set to pass through the isocenter of the radiotherapy equipment.
  • the isocenter point is the intersection of the center line of the ray beam emitted by the target radiation source in the radiotherapy head and the rotation axis 24 of the rotating frame 2.
  • the radiotherapy head If the swing axis 3 is set to pass through the isocenter point, after the fixed frame 1 swings, the radiotherapy head The center line of the ray beam emitted by the target ray source will still pass through the isocenter point, and in normal use, the treatment couch 6 will drive the patient 5 into the treatment cavity 21, and make the target point of the patient 5 at the isocenter point, so First, after the fixed frame 1 swings, the treatment couch 6 does not need to move, and the radiation emitted by the target radiation source in the radiotherapy head can still irradiate the target point of the patient 5, which reduces the difficulty and complexity of the operation of the radiotherapy equipment.
  • the target radiation source refers to the radiation source selected for the treatment in the radiation therapy head during the radiation therapy process. If there is only one ray source in the radiotherapy head, the ray source is the target ray source; if there are multiple ray sources in the radiotherapy head, any ray source among the multiple ray sources can be the above-mentioned target ray source .
  • the radiotherapy apparatus further includes an imaging device including an imaging source 5000 and an imager 6000 , and the imaging source 5000 and the imager 6000 are mounted on the rotating frame 2 .
  • the imaging device is used to realize high-precision patient positioning before treatment of the patient 5 and real-time monitoring treatment during treatment.
  • the rotating frame 2 includes a first mounting portion 22 and a second mounting portion 23 , the imaging source 5000 and the imager 6000 are both mounted on the second mounting portion 23 , and the imaging source 5000 and the imager are both mounted on the second mounting portion 23 .
  • the 6000 is arranged symmetrically about the isocenter of the radiation therapy device.
  • the imaging source 5000 can be a KV-level X-ray tube capable of emitting a cone beam
  • the imager 6000 can be a flat panel detector or a curved panel detector for receiving the cone emitted by the X-ray tube. shape the beam and form the shape and state of the patient's 5 tumor.
  • the present disclosure also provides an imaging device, as shown in FIG. 15 , the imaging device includes the above-mentioned gantry 01 and an imaging device, the imaging device includes an imaging source 5000 and an imager 6000 , and the imaging source 5000 and the imager 6000 are installed on the rotating frame 2 on. It should be noted that when the imaging source 5000 and the imager 6000 are arranged, the imaging source 5000 and the imager 6000 should be symmetrical about the intersection of the rotation axis 24 of the rotating frame 2 and the swing axis 3 .
  • the imaging device is used to realize high-precision patient positioning before treatment of the patient 5 and real-time monitoring treatment during treatment.
  • the imaging source 5000 rotates with the rotating frame 2
  • the area covered by the rays it emits is the imaging plane
  • the fixed frame 1 can swing around the swing axis 3
  • the rotating frame 2 can swing around the swing axis 3 synchronously with the fixed frame 1. Therefore, after the fixed frame 1 and the rotating frame 2 swing synchronously, the imaging device will obtain a new imaging plane, and the imaging device can image the tumor of the patient 5 from different angles.
  • the rotating frame 2 includes the first mounting part 22 and the second mounting part 23 , the imaging source 5000 and the imager 6000 are both mounted on the second mounting part 23 .
  • the imaging source 5000 can be a KV-level X-ray tube capable of emitting a cone beam
  • the imager 6000 can be a flat panel detector or a curved panel detector for receiving the cone emitted by the X-ray tube. shape the beam and form the shape and state of the patient's 5 tumor.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Pathology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiation-Therapy Devices (AREA)

Abstract

La présente divulgation concerne un châssis, un dispositif de radiothérapie et un dispositif d'imagerie. Le châssis comprend un corps de châssis, le corps de châssis comprenant un cadre fixe et un cadre rotatif, et le cadre fixe pivotant autour d'un axe pivot ; le cadre rotatif est monté rotatif sur le cadre fixe et pivote autour de l'axe pivot de manière synchrone avec le cadre fixe ; et l'axe de rotation du cadre rotatif coupe l'axe pivot.
PCT/CN2021/076601 2021-02-10 2021-02-10 Châssis, dispositif de radiothérapie et dispositif d'imagerie WO2022170602A1 (fr)

Priority Applications (2)

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PCT/CN2021/076601 WO2022170602A1 (fr) 2021-02-10 2021-02-10 Châssis, dispositif de radiothérapie et dispositif d'imagerie
CN202180091823.8A CN116801947A (zh) 2021-02-10 2021-02-10 机架、放射治疗设备及成像设备

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060193435A1 (en) * 2005-02-28 2006-08-31 Kenji Hara Radiotherapy apparatus monitoring therapeutic field in real-time during treatment
CN104136078A (zh) * 2012-02-29 2014-11-05 三菱重工业株式会社 X射线治疗系统及照射场决定方法
WO2015062093A1 (fr) * 2013-11-01 2015-05-07 西安大医数码技术有限公司 Système de radiothérapie polyvalent
WO2015176265A1 (fr) * 2014-05-22 2015-11-26 数码医疗集团 Équipement de traitement de focalisation multi-source et de radiothérapie conformationnelle avec modulation d'intensité, et combinaison de collimateur associée
US20170065833A1 (en) * 2015-04-21 2017-03-09 Xi'an Cyber Medical Technology Co., Ltd. Multi-purpose radiation therapy system
CN111272786A (zh) * 2020-03-30 2020-06-12 赵磊 Ct扫描成像系统

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060193435A1 (en) * 2005-02-28 2006-08-31 Kenji Hara Radiotherapy apparatus monitoring therapeutic field in real-time during treatment
CN104136078A (zh) * 2012-02-29 2014-11-05 三菱重工业株式会社 X射线治疗系统及照射场决定方法
WO2015062093A1 (fr) * 2013-11-01 2015-05-07 西安大医数码技术有限公司 Système de radiothérapie polyvalent
WO2015176265A1 (fr) * 2014-05-22 2015-11-26 数码医疗集团 Équipement de traitement de focalisation multi-source et de radiothérapie conformationnelle avec modulation d'intensité, et combinaison de collimateur associée
US20170065833A1 (en) * 2015-04-21 2017-03-09 Xi'an Cyber Medical Technology Co., Ltd. Multi-purpose radiation therapy system
CN111272786A (zh) * 2020-03-30 2020-06-12 赵磊 Ct扫描成像系统

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