Image and treatment all-in-one machine

Abstract

The utility model discloses an image and treatment all-in-one machine which comprises a base and a treatment head, the treatment head is used for generating X-rays for radiotherapy, the intersection point of the swinging central axis of the treatment head and the rotation central axis of a rotating disc assembly is a mechanical isocenter, and a CT image guiding mechanism is fixed relative to the rotating disc assembly. And the CT image guiding mechanism is used for imaging to guide radiotherapy so as to determine the position of a head focus, and the imaging center of the CT image guiding mechanism coincides with the mechanical isocenter. The device special for treating the head is designed through the accelerator double-track motion focusing continuous arc discharge technology, the treatment area is in a hemispherical shape, the device is more suitable for the device special for treating the head, the treatment efficiency is higher, the single-time treatment dosage is larger, and all prescription doses can be completed through one-time treatment. CT image guidance is applied to a head X-ray treatment system, positioning treatment can be completed at a time, repeated positioning errors are eliminated, the treatment precision is higher, and then the treatment time is shortened.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment, and in particular to an integrated imaging and treatment machine. Background Art

[0002] CT uses an X-ray beam to scan a layer of a certain thickness in a certain part of the human body. The light is received by the detector and converted into visible light through the layer. It is then converted into electrical signals by photoelectric conversion, and then converted into digital signals by an analog / digital converter and input into a computer for processing.

[0003] The prior art discloses an X-ray multifunctional imaging and treatment all-in-one machine, an X-ray diagnosis and treatment device, which includes modules such as rotation positioning and ray control. Imaging or treatment is stimulated by the same X-ray source, which can meet the needs of CT, XLCT, X-RT and X-PDT. It integrates multiple imaging modalities and treatment modalities in one, is multifunctional, miniaturized, and easy to operate, and can meet preclinical research such as disease development mechanisms, new diagnosis and treatment technologies, and drug development.

[0004] Currently, before patients undergo head X-ray treatment, they must first use CT to check the disease through X-ray imaging. After the positioning is completed, the patient enters the X-ray equipment for treatment. The X-ray equipment needs to re-position the lesion. In addition, during treatment, the current X-ray equipment rotates discontinuously. After the equipment rotates a certain angle, it needs to rotate in the opposite direction for positioning. The secondary positioning is also prone to errors, and the treatment takes a long time. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides an integrated imaging and treatment machine, comprising a base and a treatment head, wherein the treatment head is used to generate X-rays for radiotherapy, and is characterized in that it also comprises a turntable assembly, wherein the turntable assembly is mounted on the base and can make circular motion relative to the base; a swing frame assembly, wherein the swing frame assembly is relatively fixed to the turntable assembly, the treatment head is mounted on the swing frame assembly, and the swing frame assembly can drive the treatment head to swing within a certain arc range, and the intersection of the central axis of the swing of the treatment head and the central axis of the rotation of the turntable assembly is the mechanical isocenter; a CT image guiding mechanism, wherein the CT image guiding mechanism is relatively fixed to the turntable assembly, and is used for imaging to guide the radiotherapy to determine the location of the head lesion, and the imaging center of the CT image guiding mechanism coincides with the mechanical isocenter.

[0006] Preferably, the mechanical isocenter of the intersection of the central axis of the treatment head driven by the swing frame assembly and the central axis of rotation of the turntable assembly coincides with the treatment center of the treatment head and the image center of the imaging system.

[0007] Preferably: the base is provided with a driving mechanism and an auxiliary supporting mechanism for driving the turntable assembly to rotate, the turntable assembly is installed on the base, the front end of the turntable assembly is connected to the driving mechanism, and the rear end of the turntable assembly is connected to the auxiliary supporting mechanism, and the turntable assembly is driven to rotate by the driving mechanism.

[0008] Preferably: the driving mechanism comprises a gear ring, a turntable bearing, a gear and a flange plate, the turntable assembly is fixedly connected to the gear ring, the gear ring meshes with the gear, the gear is connected to the turntable assembly driving member, and the turntable assembly driving member is fixed on the base.

[0009] Preferably: a slip ring assembly is arranged in the auxiliary support mechanism, the slip ring assembly includes a slip ring inner ring and a slip ring outer ring, the auxiliary support mechanism also includes a central shaft, a rotating support shaft and a support shaft end cover, the slip ring inner ring is installed on the central shaft so that the slip ring inner ring rotates with the central shaft, the slip ring outer ring is installed on the rotating support shaft, the outer end of the rotating support shaft is connected to the support shaft end cover, and the central shaft is rotatably connected to the support shaft end cover through a bearing, and the slip ring assembly is encapsulated on the auxiliary support mechanism through the support shaft end cover.

[0010] Preferably, the treatment head is mounted on a head frame, the head frame is connected to a swing frame, and the treatment head is driven to swing through the swing frame assembly.

[0011] Preferably, the handpiece frame is fixedly connected to the handpiece auxiliary support frame, and the swing frame drives the handpiece frame and the treatment head to swing in an arc along the rotation axis of the turntable assembly.

[0012] Preferably, the treatment head comprises an X-ray accelerating tube, a collimator and a shielding body, and the central axis of the X-ray beam formed by the X-rays generated by the X-ray accelerating tube through the collimator coincides with the mechanical isocenter.

[0013] Preferably, a collimator rod is installed in the collimation hole of the collimator, and a plurality of small holes are arranged on the collimator rod, and the X-rays are focused to a point after passing through the small holes.

[0014] Preferably, a protective cover is installed on the base, and a head treatment area is formed inside the protective cover for head treatment.

[0015] Technical effects and advantages of the utility model:

[0016] 1. In the present invention, the accelerator double-track motion focusing continuous arc drawing is used to treat the head, which has higher treatment efficiency and larger single treatment dose, and the entire prescribed dose can be completed in one treatment.

[0017] 2. In the present invention, the intersection of the central axis of the treatment head driven by the swing frame assembly and the central axis of the turntable assembly is the mechanical isocenter of the equipment, the treatment center formed by the X-ray accelerator tube and the central axis of the X-ray beam generated by the CT image are coincident with each other. By applying CT image guidance to the head X-ray treatment system, positioning treatment can be completed in one step, eliminating repeated positioning errors, making the treatment more accurate, and thus reducing the treatment time.

[0018] 3. In the utility model, the slip ring assembly is used to provide power and signals to the treatment head and the CT imaging system on the turntable assembly. A water circuit can also be set at the slip ring assembly to provide cooling water to the treatment head components, thereby protecting the equipment.

[0019] 4. In the present invention, the head frame is supported at both ends, and the head frame is fixed more stably, thus ensuring a higher position accuracy of the X-ray accelerator tube beam.

[0020] 5. In the utility model, a plurality of small holes are arranged on the collimator rod. After the X-rays pass through the small holes, they are focused to a point. The focusing point coincides with the treatment isocenter, thus realizing an ultra-small radiation field. The isocenter dose can meet the radiotherapy requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the all-in-one machine provided in an embodiment of the present application;

[0022] Figure 2 is a side cross-sectional view of a base in an all-in-one machine provided in an embodiment of the present application;

[0023] Figure 3 It is a structural schematic diagram of a swing frame assembly in an all-in-one machine provided in an embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the installation of the swing frame assembly in the all-in-one machine provided in the embodiment of the present application;

[0025] Figure 5 It is a schematic diagram of the structure of the gear and the gear ring in the all-in-one machine provided in an embodiment of the present application;

[0026] Figure 6 It is a structural schematic diagram of the auxiliary support mechanism in the all-in-one machine provided in an embodiment of the present application;

[0027] Figure 7 1 is a schematic diagram of the installation of a slip ring assembly in an integrated machine provided in an embodiment of the present application;

[0028] Figure 8 It is a structural schematic diagram of a head assembly in an all-in-one machine provided in an embodiment of the present application;

[0029] Fig. 9is a partial cross-sectional view of a head assembly in an all-in-one machine provided in an embodiment of the present application;

[0030] Fig.10 This is a schematic diagram of the structure of the collimator rod in the integrated machine provided in the embodiment of the present application:

[0031] Fig.11 It is a schematic diagram of the focusing of X-rays through the collimator rod in the all-in-one device provided in an embodiment of the present application.

[0032] In the figure: 1. base; 101. mounting hole; 102. limit groove; 2. turntable assembly; 201. turntable; 202. bracket; 3. gear ring; 4. turntable bearing; 5. protective cover; 6. gear; 7. flange plate; 8. turntable assembly drive member; 9. slip ring assembly; 91. slip ring inner ring; 92. slip ring outer ring; 10. auxiliary support mechanism; 101. center shaft; 102. rotating support shaft; 103. support shaft end cover; 11. swing frame assembly; 12. swing frame drive joint; 13. swing frame drive screw; 14 , machine head auxiliary support frame; 15, swing frame bearing; 16, fixed frame; 17, swing frame slide; 18, swing frame guide rail; 19, machine head frame; 20, X-ray shielding block; 21, isolator; 22, magnetron; 23, CTX ray tube; 24, CT image detector; 25, X-ray accelerator tube; 26, collimator; 27, collimator bearing; 28, collimator shaft; 29, first pulley; 30, second pulley; 31, drive motor; 32, synchronous belt; 33, collimator rod; 331, small hole. DETAILED DESCRIPTION

[0033] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments of the present invention are provided for the purpose of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention, and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for specific purposes.

[0034] See also Figures 1 to 4In this embodiment, an imaging and treatment integrated machine is provided, including a base 1, a turntable assembly 2, a swing frame assembly 11, a treatment head and an imaging system. The base 1 is provided with a turntable assembly 2, the turntable assembly 2 is fixedly connected to the inner ring of a turntable bearing 4, a protective cover 5 is provided in the base 1, a head treatment area is formed in the protective cover 5, and is used for head treatment. The base 1 is provided with a mounting hole 101 corresponding to the protective cover 5, and the protective cover 5 extends to the inner side of the turntable assembly 2 through the mounting hole 101. The intersection of the central axis of the treatment head driven by the swing frame assembly 11 and the central axis of the rotation of the turntable assembly 2 is the mechanical isocenter, and the treatment head and the imaging system are coaxial. The two components are coplanar, and the treatment center of the treatment head and the image center axis of the imaging system are the treatment isocenter. The mechanical isocenter of the intersection of the center axis of the treatment head driven by the swing frame assembly 11 and the rotation center axis of the turntable assembly 2 coincides with the treatment isocenter of the treatment center of the treatment head and the image center axis of the imaging system. During treatment, the patient's lesion must be placed at the treatment isocenter. The equipment is a head treatment system, that is, during treatment, the turntable assembly 2 rotates to form a hemispherical treatment area, and the patient's head is in the protective cover 5. The protective cover 5 separates the patient's vision from the moving parts inside the equipment, and the patient feels more comfortable during treatment.

[0035] Furthermore, a driving mechanism and an auxiliary supporting mechanism 10 for driving the turntable assembly 2 to rotate are provided on the base 1. The turntable assembly 2 is installed on the base 1. The front end of the turntable assembly 2 is connected to the driving mechanism, and the rear end of the turntable assembly 2 is connected to the auxiliary supporting mechanism 10. The turntable assembly 2 is driven to rotate by the driving mechanism.

[0036] The driving mechanism includes a ring gear 3, a turntable bearing 4, a gear 6, and a flange plate 7. The turntable assembly 2 is fixedly connected to the ring gear 3, the ring gear 3 meshes with the gear 6, the gear 6 is connected to the turntable assembly driving member 8, and the turntable assembly driving member 8 is fixed on the base 1.

[0037] Furthermore, a flange plate 7 is installed on the side wall of the base 1 located on the turntable bearing 4, and the outer ring of the turntable bearing 4 is fixed on the base 1 through the flange plate 7. The base 1 is located on the inner side of the flange plate 7 and a limiting groove 102 is provided corresponding to the protective cover 5. The opening of the protective cover 5 is placed in the limiting groove 102, which is convenient for the installation and fixation of the protective cover 5. The turntable assembly driving member 8 drives the gear 6 to rotate, driving the ring gear 3 and the turntable assembly 2, so that the turntable assembly 2 and the components installed thereon rotate continuously around the rotation center axis of the turntable assembly 2.

[0038] In this embodiment, see Figure 5 As shown, the turntable assembly driving member 8 can use a servo motor, which drives the gear 6 to rotate, and the gear 6 drives the ring gear 3 and the turntable assembly 2 to rotate.

[0039] Furthermore, a slip ring assembly 9 is provided in the auxiliary support mechanism 10. The slip ring assembly 9 is used to transmit signals, power supply and cooling water to the treatment head and the CT imaging system, so that the turntable assembly 2 can obtain external power supply and exchange signals with the outside when it rotates continuously. A water circuit can also be set at the slip ring assembly 9 to provide cooling water for components and thus protect the equipment.

[0040] For further information, see Figure 3-4 As shown, the turntable assembly 2 includes a turntable 201 and a bracket 202. The turntable 201 and the bracket 202 can be integrally formed or connected together by welding or bolts. The bracket 202 is fixedly connected to the support shaft end cover 103. When the bracket 202 rotates, the central shaft 101 and the inner ring 91 of the slip ring are driven to rotate. One side end of the bracket 202 is higher than the other side end, so that the bracket 202 forms a space for installing the treatment head and the imaging system, and a swing frame assembly 11 is installed at the protrusion of the bracket 202. The swing frame assembly 11 includes a servo motor, and the servo motor is connected to the swing frame drive through a transmission mechanism. The screw rod 13, the swing frame driving screw rod 13 is connected to the swing frame driving joint 12, the swing frame driving joint 12 is connected to the swing frame slide 17, and the swing frame driving joint 12 is slidably connected to the swing frame guide rail 18, the swing frame guide rail 18 is fixed on the turntable assembly 2, and the swing frame guide rail 18 is arc-shaped, and an arc-shaped hole for the movement of the swing frame driving joint 12 is opened at the protrusion of the bracket 202, and the connecting end of the swing frame driving joint 12 and the swing frame slide 17 is rotatable, when the swing frame driving joint 12 moves along the swing frame driving screw rod 13, the swing frame slide 17 can move along the arc-shaped swing frame guide rail 18.

[0041] The swing frame assembly 11 also includes a fixed frame 16, which is fixed on the turntable 201. A swing frame bearing 15 is installed on the fixed frame 16. The inner ring of the swing frame bearing 15 is fixedly connected to the head auxiliary support frame 14. The head auxiliary support frame 14 and the swing frame slide 17 are used to install the treatment head. The servo motor drives the swing frame drive screw 13 to rotate, drives the swing frame drive joint 12 to reciprocate, and drives the swing frame slide 17 to reciprocate along the swing frame guide rail 18. The intersection of the central axis of the swing frame assembly 11 driving the treatment head to rotate and the central axis of the turntable assembly 2 is the mechanical isocenter of the equipment.

[0042] Different from the structure of the prior art in which two sets of swing frame assemblies are arranged on the bracket, in the present application, a mounting hole for the swing frame bearing 15 is arranged on the fixed frame 16, and a through hole is also opened at the connection between the head auxiliary support frame 14 and the inner ring of the bearing, so that the X-ray beam emitted by the imaging system can pass through the through hole to scan the head in the protective cover 5, and through the design of the fixed frame 16 and the head auxiliary support frame 14, a space for installing the treatment head and the imaging system is formed on the turntable assembly 2, which is convenient for the installation of the imaging system and the treatment head, and also convenient for the maintenance of the imaging system and the treatment head.

[0043] See also Figure 4 As shown, the treatment head is installed on the turntable assembly 2, and the treatment head includes an X-ray accelerator tube 25, an X-collimator 26 and a shielding body. The treatment head is installed on the head frame 19. The X-rays generated in the X-ray accelerator tube 25 become a conical ray beam after passing through the collimator 26. The central axis of the conical ray beam passes through the mechanical isocenter to form a treatment center. The turntable assembly 2 is orthogonally arranged with an X-ray shielding block 20 corresponding to the X-ray accelerator tube 25.

[0044] One end of the head frame 19 is fixedly connected to the swing frame slide 17, and the other end of the head frame 19 is fixedly connected to the head auxiliary support frame 14. The head frame 19 is supported at both ends, and the head frame 19 and the treatment head are driven to swing in an arc along the rotation axis of the turntable assembly 2 through the swing frame assembly 11. The arc swing axis and the axis of the rotation movement of the turntable assembly 2 are mechanical isocenters compared to a point, forming a double-track focusing movement, so that the head frame 19 and the treatment head are fixed more stably, thereby ensuring that the position accuracy of the ray beam of the X-ray accelerator tube 25 is higher.

[0045] One side end of the head frame 19 is connected to an isolator 21 , and the isolator 21 is connected to a magnetron 22 .

[0046] In this embodiment, the imaging system is installed on the turntable assembly 2. The imaging system is a CT image guidance system, which is a head-specific CT. The CT image guidance system includes a CTX ray tube 23 and a CT image detector 24. The central axis of the X-ray beam generated by the CTX ray tube 23 passes through the mechanical isocenter to form an image center.

[0047] Specifically, the intersection of the central axis of the treatment head driven by the swing frame assembly 11 and the central axis of the turntable assembly 2 is the mechanical isocenter of the equipment, the treatment center formed by the X-ray accelerator tube 25 and the central axis of the X-ray beam generated by the CT X-ray tube 23 are coincident. Applying CT image guidance to the head X-ray treatment system can achieve one-time positioning treatment, eliminate repeated positioning errors, and make the treatment more accurate.

[0048] See also Figure 6-7As shown, the slip ring assembly 9 includes a slip ring inner ring 91 and a slip ring outer ring 92. The slip ring assembly 9 is installed on the auxiliary support mechanism 10. The auxiliary support mechanism 10 includes a central shaft 101, a rotating support shaft 102 and a support shaft end cover 103. The slip ring inner ring 91 is installed on the central shaft 101 and fixed to the central shaft 101 by tightening bolts, so that the slip ring inner ring 91 rotates with the central shaft 101. The slip ring outer ring 92 is installed on the rotating support shaft 102. The outer end of the rotating support shaft 102 is connected to the support shaft end cover 103, and the central shaft 101 is rotatably connected to the support shaft end cover 103 through a bearing. The slip ring assembly 9 is encapsulated on the auxiliary support mechanism 10 through the support shaft end cover 103. The slip ring assembly 9 is used to provide electricity and transmit data signals to the treatment head and the imaging system, which can avoid the problem of entanglement and easy damage of power lines, signal lines, etc. during rotation, and can stably transmit power and data signals.

[0049] See also Figure 8-9 As shown, a collimator shaft 28 is provided in the through hole in the middle of the collimator 26, and the collimator shaft 28 is fixed on the head frame 19. The collimator shaft 28 is fixedly connected to the inner ring of the collimator bearing 27, and the outer ring of the collimator bearing 27 is fixedly connected to the collimator 26. A first pulley 29 is fixed to the outer ring of the collimator 26, and a second pulley 30 is provided on one side of the first pulley 29. The second pulley 30 and the first pulley 29 are connected by a synchronous belt 32. The second pulley 30 is connected to the driving shaft of the driving motor 31, and the driving motor 31 is fixed on the head frame 19.

[0050] Furthermore, collimating holes of various sizes are arranged on the collimator 26, and the collimating holes of different sizes form radiation fields of different sizes at the treatment center to adapt to the treatment of lesions of different sizes.

[0051] Specifically, the driving motor 31 drives the second pulley 30 to rotate, and drives the first pulley 29 and the collimator 26 to rotate through the synchronous belt 32, so that the center line of the collimating hole to be used coincides with the center line of the X-ray accelerator tube, so that the X-ray can pass through the collimating hole to achieve work.

[0052] See also Fig.10 and 11 As shown, a collimator rod 33 is installed in the collimation hole of the collimator 26, and a plurality of small holes 331 are provided on the collimator rod 33. After the X-ray passes through the small holes 331, it is focused to a point, and the focusing point coincides with the treatment isocenter, thereby realizing an ultra-small radiation field, and its isocenter dose can meet the radiotherapy requirements.

[0053] Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field and related fields without creative work should fall within the scope of protection of the present invention. Structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to conventional means in the field unless otherwise specified and limited.

Claims

1. An integrated imaging and treatment device, comprising a base and a treatment head, wherein the treatment head is used to generate X-rays for radiotherapy, characterized in that: Also includes A turntable assembly, the turntable assembly is mounted on the base and can perform circular motion relative to the base; A swing frame assembly, wherein the swing frame assembly is relatively fixed to the turntable assembly, the treatment head is mounted on the swing frame assembly, and the swing frame assembly can drive the treatment head to swing within a certain arc range, and the intersection of the central axis of the swing of the treatment head and the central axis of the rotation of the turntable assembly is the mechanical isocenter; A CT image guiding mechanism is fixed relatively to the turntable assembly and is used for imaging to guide the radiotherapy so as to determine the location of the head lesion. The imaging center of the CT image guiding mechanism coincides with the mechanical isocenter.

2. The imaging and treatment integrated machine according to claim 1, characterized in that: The mechanical isocenter of the intersection of the central axis of the treatment head driven by the swing frame assembly and the central axis of rotation of the turntable assembly coincides with the treatment center of the treatment head and the image center of the imaging system.

3. The integrated imaging and treatment device according to claim 1, characterized in that: The base is provided with a driving mechanism and an auxiliary supporting mechanism for driving the turntable assembly to rotate. The turntable assembly is installed on the base, the front end of the turntable assembly is connected to the driving mechanism, and the rear end of the turntable assembly is connected to the auxiliary supporting mechanism. The turntable assembly is driven to rotate by the driving mechanism.

4. The integrated imaging and treatment device according to claim 3, characterized in that: The driving mechanism includes a gear ring, a turntable bearing, a gear and a flange plate. The turntable assembly is fixedly connected to the gear ring, the gear ring meshes with the gear, the gear is connected to the turntable assembly driving member, and the turntable assembly driving member is fixed on the base.

5. The integrated imaging and treatment device according to claim 4, characterized in that: A slip ring assembly is arranged in the auxiliary support mechanism, and the slip ring assembly includes a slip ring inner ring and a slip ring outer ring. The auxiliary support mechanism also includes a central shaft, a rotating support shaft and a support shaft end cover. The slip ring inner ring is installed on the central shaft so that the slip ring inner ring rotates with the central shaft. The slip ring outer ring is installed on the rotating support shaft. The outer end of the rotating support shaft is connected to the support shaft end cover, and the central shaft is rotatably connected to the support shaft end cover through a bearing. The slip ring assembly is encapsulated on the auxiliary support mechanism through the support shaft end cover.

6. The integrated imaging and treatment device according to claim 1, characterized in that: The treatment head is mounted on a head frame, and the head frame is connected to a swing frame assembly, and the treatment head is driven to swing through the swing frame assembly.

7. The integrated imaging and treatment device according to claim 6, characterized in that: The handpiece frame is fixedly connected to the handpiece auxiliary support frame, and the swing frame drives the handpiece frame and the treatment head to swing in a circular arc along the rotating axis of the turntable assembly.

8. The integrated imaging and treatment device according to claim 1, characterized in that: The treatment head comprises an X-ray accelerating tube, a collimator and a shielding body. The central axis of the X-ray beam formed by the collimator through the X-ray generated by the X-ray accelerating tube coincides with the mechanical isocenter.

9. The integrated imaging and treatment device according to claim 8, characterized in that: A collimator rod is installed in the collimation hole of the collimator, and a plurality of small holes are arranged on the collimator rod. The X-rays are focused to a point after passing through the small holes.

10. The integrated imaging and treatment device according to claim 1, characterized in that: A protective cover is installed on the base, and a head treatment area is formed inside the protective cover for head treatment.

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