CN116747461A - Medical accelerator airborne image device - Google Patents
Medical accelerator airborne image device Download PDFInfo
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- CN116747461A CN116747461A CN202311026361.9A CN202311026361A CN116747461A CN 116747461 A CN116747461 A CN 116747461A CN 202311026361 A CN202311026361 A CN 202311026361A CN 116747461 A CN116747461 A CN 116747461A
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- 230000007246 mechanism Effects 0.000 claims abstract description 68
- 230000001360 synchronised effect Effects 0.000 claims description 79
- 238000009434 installation Methods 0.000 claims description 26
- 238000012907 on board imaging Methods 0.000 claims description 13
- 238000003384 imaging method Methods 0.000 abstract description 11
- 239000003990 capacitor Substances 0.000 description 10
- 238000007408 cone-beam computed tomography Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000004881 tumor cell Anatomy 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013170 computed tomography imaging Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 231100000636 lethal dose Toxicity 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000001959 radiotherapy Methods 0.000 description 1
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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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/42—Arrangements for detecting radiation specially adapted for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
-
- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1049—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam
- A61N2005/1061—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using an x-ray imaging system having a separate imaging source
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- Biomedical Technology (AREA)
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- Radiology & Medical Imaging (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Pathology (AREA)
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- High Energy & Nuclear Physics (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Heart & Thoracic Surgery (AREA)
- Molecular Biology (AREA)
- Surgery (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention discloses an airborne imaging device of a medical accelerator, which belongs to the technical field of medical instruments and comprises a mounting base, wherein a bulb arm and a flat plate arm are mounted in the mounting base; a bulb base is arranged at the end part of the bulb arm; a flat panel detector base is arranged at the end part of the flat panel arm; the end part of the bulb arm is also provided with a bulb folding mechanism which is used for folding the bulb base; the end part of the flat arm is also provided with a flat folding mechanism which is used for folding the flat detector base. The medical accelerator airborne image system has a simple and compact structure, and can meet the position driving of the bulb tube base and the X-ray bulb tube only by two sets of driving devices; the two sets of driving devices can meet the position driving of the flat panel detector base and the flat panel detector body; the motion guiding of the flat plate arm and the bulb arm can effectively ensure the accuracy and smoothness of the system motion.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an onboard imaging device of a medical accelerator.
Background
The medical accelerator is a tumor radiotherapy device, and the principle is that high-energy rays generated by the accelerator are used for irradiating tumor tissues, so that the tumor cells obtain lethal dose, and the purpose of killing the tumor cells is achieved. With the use of computer planning systems and a series of advanced techniques, it is becoming increasingly important to increase the dose to the target tumor area and to protect normal tissues clinically.
On a medical linac, an on-board imaging device (also known as a CBCT imaging system or cone beam CT imaging system). Before treatment, clinicians and technicians can observe and acquire position information of critical organs and tumors of a patient through an imaging system, so that the accuracy of accelerator ray irradiation is ensured.
In the prior art, different manufacturers provide different solutions for the system of the airborne image device (also called CBCT image system or cone beam CT image system), including linear telescopic type, sectional folding type and the like, and the purpose is to enable the image system to rise to the position with the same center as the accelerator through the mechanical movement device when in use, enable a patient to swing or retract to the frame side as far as possible after completing image acquisition, and leave the largest swing operation space and treatment space for the patient. However, the on-board imaging device needs to rotate along with the frame, and the bulb tube system and the detector system are respectively installed on two sides of the frame, so that the requirement on the positions of the bulb tube and the image flat panel detector is a technical problem to be solved at present.
Disclosure of Invention
The invention aims to provide an onboard imaging device of a medical accelerator, which aims to solve the problem of how to ensure the position requirements of a bulb tube and an image flat panel detector, which are proposed in the background technology.
In order to solve the technical problems, the invention adopts the following technical scheme:
the medical accelerator airborne imaging device comprises a mounting base, wherein bosses are respectively arranged at the upper end and the lower end of the mounting base, and each boss comprises a first boss and a second boss; a first clamping plate and a second clamping plate are arranged between the first boss and the second boss;
a first installation area is formed between the first boss and the first clamping plate, a second installation area is formed between the second boss and the second clamping plate, and a third installation area is formed between the first clamping plate and the second clamping plate; the first mounting area and the second mounting area are used for mounting the bulb arm; the third mounting area is used for mounting the flat arm; a bulb base is arranged at the end part of the bulb arm and is used for installing an X-ray bulb; a flat panel detector base is arranged at the end part of the flat panel arm; the flat panel detector base is used for installing a flat panel detector body;
the two sides of the mounting base are respectively provided with a driving device, which comprises a first driving device and a second driving device, wherein the first driving device is used for driving the bulb arm to slide in the mounting base, and the second driving device is used for driving the flat plate arm to slide in the mounting base; the end part of the bulb arm is also provided with a bulb folding mechanism which is used for folding the bulb base; the end part of the flat arm is also provided with a flat folding mechanism which is used for folding the flat detector base; the bulb folding mechanism is provided with a first angle measuring device, the flat folding mechanism is provided with a second angle measuring device, the first angle measuring device is used for measuring the rotation angle of the bulb folding mechanism, and the second angle measuring device is used for measuring the rotation angle of the flat folding mechanism.
According to the technical scheme, the bulb arm comprises an upper bulb arm and a lower bulb arm; wherein, go up the bulb arm setting at first installation region, the bulb arm setting is in the second installation region down.
According to the technical scheme, a first sliding rail is further arranged above the upper bulb arm, and a second sliding rail is further arranged below the lower bulb arm; and a first chute base and a second chute base are respectively arranged in the first installation area and the second installation area, and are respectively matched with the first sliding rail and the second sliding rail.
According to the technical scheme, the lower end of the lower bulb arm is further provided with the first driving tooth, and the first driving tooth is matched with the first gear arranged on the first driving device and used for sliding the bulb arm.
According to the technical scheme, a rotating shaft is arranged between the upper bulb arm and the lower bulb arm, and a bulb base is fixedly connected to the rotating shaft; the rotating shaft is connected with the bulb tube folding mechanism;
the bulb tube folding mechanism comprises a first synchronous belt pulley, a second synchronous belt pulley, a first synchronous belt and a third driving device; the third driving device is fixedly arranged between the upper bulb arm and the lower bulb arm; the first synchronous belt pulley is fixedly arranged on the rotating shaft, the second synchronous belt pulley is arranged on the third driving device, and the first synchronous belt pulley is connected with the second synchronous belt pulley through the first synchronous belt, so that the bulb tube base is driven to fold.
According to the technical scheme, a third chute base is arranged above the third installation area, and a fourth chute base is arranged below the third installation area; the upper flat arm is provided with a third sliding rail, the lower flat arm is provided with a fourth sliding rail, the third sliding rail is matched with a third sliding groove base, and the fourth sliding rail is matched with a fourth sliding groove base for sliding of the flat arm in the installation base.
According to the technical scheme, the lower end of the lower flat plate arm is further provided with the second driving teeth, and the second driving teeth are matched with the second gear arranged on the second driving device and used for sliding the flat plate arm.
According to the technical scheme, a rotating shaft is arranged between the upper flat plate arm and the lower flat plate arm, and a flat plate detector base is fixedly connected to the rotating shaft; the rotating shaft is connected with the flat plate folding mechanism;
the flat plate folding mechanism comprises a third synchronous pulley, a fourth synchronous pulley, a second synchronous belt and a fourth driving device; the fourth driving device is fixedly arranged between the upper flat plate arm and the lower flat plate arm; the third synchronous pulley is fixedly arranged on the rotating shaft, the fourth synchronous pulley is arranged on the fourth driving device, and the third synchronous pulley is connected with the fourth synchronous pulley through the second synchronous belt, so that the flat panel detector base is driven to be folded.
According to the technical scheme, the flat panel detector base comprises a bottom plate; the bottom plate is provided with longitudinal sliding components which are respectively arranged at two sides of the bottom plate; the longitudinal sliding component comprises a longitudinal sliding block, a longitudinal sliding rail and a middle plate; the middle plate is fixedly connected with the longitudinal sliding rail; the longitudinal sliding rail is arranged on the longitudinal sliding block in a sliding way;
the longitudinal sliding assembly further comprises a longitudinal driving device and a rack; the longitudinal driving device is fixedly arranged on the middle plate, and the rack is arranged on the side edge of the longitudinal driving device; and a third gear is further arranged on the longitudinal driving device and matched with the rack for the up-and-down movement of the flat panel detector base.
According to the technical scheme, the flat panel detector base further comprises a transverse moving assembly; the transverse moving assembly comprises a sliding rod, a screw rod and a transverse driving device; the sliding rod and the screw rod are arranged on the middle plate, a transverse sliding block is arranged on the sliding rod in a sliding manner, and a screw rod nut is arranged on the screw rod; the transverse sliding block and the screw nut are fixedly connected with the flat panel detector body;
the transverse driving device is fixedly arranged on the middle plate, a first transverse synchronous pulley is fixedly arranged on the transverse driving device, a second transverse synchronous pulley is arranged on the lead screw, and the first transverse synchronous pulley is connected with the second transverse synchronous pulley through a third synchronous belt.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides an onboard imaging device of a medical accelerator, which comprises a mounting base, a bulb arm, a flat plate arm, a bulb base, a flat plate detector base, a bulb folding mechanism and a flat plate folding mechanism; wherein, the installation base is connected with the accelerator body, and the bulb arm sets up on the installation base, and the bulb arm can slide for the installation base. The flat arm is arranged on the mounting base and can slide relative to the mounting base; the flat plate folding mechanism is arranged on the flat plate arm and used for driving the flat plate detector base and the flat plate detector body to rotate along the Z axis, and when the drawing is adopted, the flat plate folding mechanism drives the flat plate detector body to be unfolded and parallel to the rotation center shaft of the accelerator body. When the flat panel detector is retracted, the flat panel folding mechanism drives the flat panel detector body to retract.
The bulb folding mechanism is arranged on the bulb arm and used for driving the bulb base and the X-ray bulb tube to rotate along the Z axis, and when the X-ray bulb tube is required to emit rays, the bulb folding mechanism drives the bulb base to be unfolded and rotated to be perpendicular to the rotation central shaft of the accelerator body; when the X-ray tube is retracted, the tube folding mechanism drives the tube base and the X-ray tube to fold and retract so as to meet the position requirement of the CBCT album.
The medical accelerator airborne image system has a simple and compact structure, and can meet the position driving of the bulb tube base and the X-ray bulb tube only by two sets of driving devices; the two sets of driving devices can meet the position driving of the flat panel detector base and the flat panel detector body; the motion guiding of the flat plate arm and the bulb arm can effectively ensure the accuracy and smoothness of the system motion.
Drawings
FIG. 1 is an expanded view of an imaging system according to the present invention;
FIG. 2 is a schematic view of an image system according to the present invention;
FIG. 3 is a schematic diagram of an image system according to the present invention;
FIG. 4 is a schematic view of the mounting base structure of the present invention;
FIG. 5 is a schematic view of a flat panel detector base structure according to the present invention;
FIG. 6 is a schematic view of a flat panel arm and flat panel detector base structure according to the present invention;
FIG. 7 is a schematic view of a bulb arm and a bulb base according to the present invention;
FIG. 8 is a second schematic view of a bulb arm and a bulb base according to the present invention;
FIG. 9 is a schematic view of the internal structure of the flat panel detector base of the present invention;
FIG. 10 is a schematic view of a bulb arm locking mechanism according to the present invention;
FIG. 11 is a schematic view of a flat arm locking mechanism according to the present invention;
FIG. 12 is one of the acquisition circuit diagrams of the present invention;
FIG. 13 is a second acquisition circuit diagram of the present invention;
FIG. 14 is a third acquisition circuit diagram of the present invention.
The marks in the figure: 100-mounting base, 200-first boss, 300-second boss, 400-first clamp plate, 500-second clamp plate, 600-bulb arm, 700-flat plate arm, 800-bulb base, 900-flat plate detector base, 110-first driving device, 111-second driving device, 112-upper bulb arm, 113-lower bulb arm, 114-first slide rail, 115-second slide rail, 116-first slide rail base, 117-second slide rail base, 118-first driving tooth, 119-rotation shaft, 120-bulb folding mechanism, 121-first synchronous pulley, 122-second synchronous pulley, 123-first synchronous pulley, 124-third driving device, 125-upper flat plate arm, 126-lower flat plate arm, 127-third slide rail, 128-third runner base, 129-second drive teeth, 130-rotation shaft, 131-flat folding mechanism, 132-third synchronous pulley, 133-fourth synchronous pulley, 134-second synchronous pulley, 135-fourth synchronous device, 136-bottom plate, 137-longitudinal slide, 138-longitudinal slide, 139-middle plate, 140-longitudinal drive, 141-rack, 142-slide, 143-screw, 144-lateral drive, 145-lateral slide, 146-screw nut, 147-first lateral synchronous pulley, 148-second lateral synchronous pulley, 149-third synchronous pulley, 150-accelerator body, 151-treatment bed, 152-first angle measuring device, 153-second angle measuring device, 154-first fixing seat, 155-first electromagnetic brake rotor, 156-first electromagnetic brake coil seat, 157-second fixing seat, 158-second electromagnetic brake rotor, 159-second electromagnetic brake coil seat, 160-fourth chute base, 161-fourth slide rail.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides an onboard imaging device of a medical accelerator, which has the advantages of compact structure, accurate movement and convenient control. The assembly adjustment can be made independently of the accelerator body 150, and then integrally mounted to the accelerator body 150 for testing the patient on the treatment couch 151. The system has stable structure after being unfolded (shown in figure 1), has small influence on patient positioning after being retracted (shown in figure 2), and better meets the requirements of the on-board CBCT imaging system of the medical accelerator body 150.
It should be noted that, the "in place" described below refers to that after the accelerator body 150 system issues the CBCT in place instruction, the bulb reaches the beam-out position, that is, the target point of the bulb reaches the "isocenter plane" of the accelerator body 150, and the target point is located 1000mm away from the isocenter axis of the frame of the accelerator body 150. The plate center position reaches the accelerator body 150 "isocenter plane" with the plate surface 500mm from the isocenter axis. The "X, Y, Z axis" refers to the state of the coordinate system as shown in fig. 1. "gantry iso-center axis" refers to the gantry rotational center axis of the accelerator body 150, i.e., the Y-axis shown in fig. 1; the "isocenter" refers to the intersection of the accelerator body 150, the gantry isocenter, and the beam limiter rotation center axis (Z axis). "isocenter plane" refers to a plane generated by rotation of the Z axis about the Y axis, i.e., the XZ plane; the "XY plane" is a horizontal plane formed by the X axis and the Y axis in the coordinate system shown in FIG. 1.
Example 1
As shown in fig. 3, an on-board imaging device of a medical accelerator comprises a mounting base 100, wherein bosses are respectively arranged at the upper end and the lower end of the mounting base 100, and each boss comprises a first boss 200 and a second boss 300; a first clamping plate 400 and a second clamping plate 500 are provided between the first boss 200 and the second boss 300;
as shown in fig. 4, a first mounting area is formed between the first boss 200 and the first clamping plate 400, a second mounting area is formed between the second boss 300 and the second clamping plate 500, and a third mounting area is formed between the first clamping plate 400 and the second clamping plate 500; the first mounting region and the second mounting region are for mounting the bulb arm 600; the third mounting area is for mounting the flat panel arm 700; a bulb base 800 is provided at an end of the bulb arm 600, the bulb base 800 being used for mounting an X-ray bulb; a flat panel detector base 900 is provided at an end of the flat panel arm 700; the flat panel detector base 900 is used for installing a flat panel detector body;
driving devices are respectively arranged at two sides of the mounting base 100 and comprise a first driving device 110 and a second driving device 111, wherein the first driving device 110 is used for driving the bulb arm 600 to slide in the mounting base 100, and the second driving device 111 is used for driving the flat plate arm 700 to slide in the mounting base 100; a bulb folding mechanism 120 is further arranged at the end part of the bulb arm 600, and the bulb folding mechanism 120 is used for folding the bulb base 800; a flat folding mechanism 131 is further arranged at the end part of the flat arm 700, and the flat folding mechanism 131 is used for folding the flat detector base 900; the bulb folding mechanism 120 is provided with a first angle measuring device 152, the flat folding mechanism 131 is provided with a second angle measuring device 153, the first angle measuring device 152 is used for measuring the rotation angle of the bulb folding mechanism 120, and the second angle measuring device 153 is used for measuring the rotation angle of the flat folding mechanism 131.
The invention provides a medical accelerator airborne imaging device, which particularly comprises a mounting base 100, a bulb arm 600, a flat plate arm 700, a bulb base 800, a flat plate detector base 900, a bulb folding mechanism 120 and a flat plate folding mechanism 131; wherein, the installation base 100 is connected with the accelerator body 150, and the bulb arm 600 is disposed on the installation base 100, and the bulb arm 600 can slide relative to the installation base 100. The flat arm 700 is disposed on the mounting base 100, and the flat arm 700 is capable of sliding with respect to the mounting base 100; the flat folding mechanism 131 is disposed on the flat arm 700, and is used for driving the flat detector base 900 and the flat detector body to rotate along the Z axis, when drawing, the flat folding mechanism 131 drives the flat detector body to open and parallel to the rotation center axis of the accelerator body 150, and when retracting, the flat folding mechanism 131 drives the flat detector to fold and retract.
The bulb folding mechanism 120 is disposed on the bulb arm 600, and is used for driving the bulb base 800 and the X-ray tube to rotate along the Z axis, and when the X-ray tube is required to emit rays, the bulb folding mechanism 120 drives the bulb base 800 to open and rotate to be perpendicular to the rotation center axis of the accelerator body 150; when retracted, the tube folding mechanism 120 drives the tube base 800 and the X-ray tube to fold back to meet the CBCT album position requirement.
Further, the first angle measuring device 152 and the second angle measuring device 153 are existing devices, for example, models: magneto-electric multi-turn absolute value encoder of CAM36A6-BF6XM 5A-4096/4096.
The medical accelerator body 150 of the invention has a simple and compact structure, and only two sets of driving devices can meet the position driving of the bulb tube base 800 and the X-ray bulb tube; the two sets of driving devices can meet the position driving of the flat panel detector base 900 and the flat panel detector body; by guiding the movement of the flat arm 700 and the bulb arm 600, the precision and smoothness of the system movement can be effectively ensured.
Example two
This embodiment is a further refinement of embodiment one.
Bulb arm 600 includes upper bulb arm 112 and lower bulb arm 113; wherein the upper bulb arm 112 is disposed in the first mounting area and the lower bulb arm 113 is disposed in the second mounting area.
A first sliding rail 114 is further arranged above the upper bulb arm 112, and a second sliding rail 115 is further arranged below the lower bulb arm 113; a first chute base 116 and a second chute base 117 are disposed in the first and second mounting areas, respectively, and the first and second chute bases 116, 117 cooperate with the first and second slide rails 114, 115, respectively.
As shown in fig. 8, a first driving tooth 118 is further provided at the lower end of the lower bulb arm 113, and the first driving tooth 118 is engaged with a first gear provided on the first driving device 110 for sliding of the bulb arm 600.
By the first chute base 116 mating with the first slide rail 114, the second chute base 117 mating with the second slide rail 115, the bulb arm 600 can extend or retract along the first and second chute bases 116, 117.
As shown in fig. 8, by the first driving teeth 118, the first driving teeth 118 are matched with a first gear arranged on the first driving device 110, the first gear is driven to rotate by the first driving device 110, and the first gear is meshed with the first driving teeth 118 to drive the bulb arm 600 to stretch out and draw back.
Further, a connecting rod is provided between the upper bulb arm 112 and the lower bulb arm 113, and the connecting rod is used for synchronous movement of the upper bulb arm 112 and the lower bulb arm 113.
Further, the upper bulb arm 112 and the lower bulb arm 113 are both arc-shaped structures.
Further, the first driving device 110, the second driving device 111, the third driving device 124 and the fourth driving device 135 are all motors.
Example III
This embodiment is a further refinement of embodiment two.
A rotating shaft 119 is arranged between the upper bulb arm 112 and the lower bulb arm 113, and a bulb base 800 is fixedly connected to the rotating shaft 119; the rotating shaft 119 is connected with the bulb folding mechanism 120;
further, as shown in fig. 10, a ball lock mechanism is further provided on the rotation shaft 119; the bulb locking mechanism comprises a first fixed seat 154, a first electromagnetic brake rotor 155 and a first electromagnetic brake coil seat 156; wherein, the first electromagnetic brake rotor 155 is fixedly connected with the rotating shaft 119 through a flat key; so that the rotating shaft 119 drives the first electromagnetic brake rotor 155 to rotate together; one end of the first electromagnetic brake coil holder 156 is fixedly disposed on the inner wall of the first fixing seat 154, and the other end of the first electromagnetic brake coil holder 156 is connected with the first electromagnetic brake rotor 155.
When the bulb arm 600 needs to be fixed, the first electromagnetic brake coil seat 156 is electrified, so that the first electromagnetic brake coil seat 156 tightly adsorbs the first electromagnetic brake rotor 155, and the first electromagnetic brake rotor 155 cannot rotate, so that the rotating shaft 119 is driven to rotate, and the locking of the bulb arm 600 is completed.
Further, two sets of ball locking mechanisms are provided, and the two sets of ball locking mechanisms are respectively provided at both ends of the rotating shaft 119.
As shown in fig. 7, the bulb folding mechanism 120 includes a first timing pulley 121, a second timing pulley 122, a first timing belt 123, and a third driving device 124; wherein, the third driving device 124 is fixedly arranged between the upper bulb arm 112 and the lower bulb arm 113; the first synchronous pulley 121 is fixedly arranged on the rotating shaft 119, the second synchronous pulley 122 is arranged on the third driving device 124, and the first synchronous pulley 121 and the second synchronous pulley 122 are connected through the first synchronous belt 123, so that the bulb base 800 is driven to fold.
In this embodiment, the bulb holder 800 is disposed on the bulb arm 600, and the bulb holder 800 mounts an X-ray bulb. And can drive the X-ray tube to move along the XY plane, the tube base 800 is connected with the tube arm 600 through the rotation shaft 119, and the tube arm 600 is provided with the tube folding mechanism 120. The rotation shaft 119 is rotatably disposed between the upper bulb arm 112 and the lower bulb arm 113, and drives the second synchronous pulley 122 to rotate through the third driving device 124, and drives the first synchronous pulley 121 to rotate through the first synchronous belt 123, so that the rotation shaft 119 rotates, thereby driving the bulb base 800 to rotate, and completing folding and unfolding of the X-ray bulb.
The plate arm 700 includes an upper plate arm 125 and a lower plate arm 126; wherein the upper and lower plate arms 125, 126 are disposed within the third mounting region;
a third chute mount 128 is provided above the third mounting area, and a fourth chute mount 160 is provided below the third mounting area; the upper plate arm 125 is provided with a third slide rail 127, the lower plate arm 126 is provided with a fourth slide rail 161, the third slide rail 127 cooperates with the third chute mount 128, and the fourth slide rail 161 cooperates with the fourth chute mount 160 for sliding movement of the plate arm 700 within the mounting mount 100.
As shown in fig. 6, a second driving tooth 129 is further provided at the lower end of the lower plate arm 126, and the second driving tooth 129 is engaged with a second gear provided on the second driving device 111 for sliding of the plate arm 700.
As shown in fig. 6, a rotation shaft 130 is disposed between the upper plate arm 125 and the lower plate arm 126, and a flat panel detector base 900 is fixedly connected to the rotation shaft 130; the rotating shaft 130 is connected with a flat plate folding mechanism 131;
further, as shown in fig. 11, a flat locking mechanism is further provided on the rotation shaft 130; the flat locking mechanism comprises a second fixed seat 157, a second electromagnetic brake moving plate 158 and a second electromagnetic brake coil seat 159; wherein, the second electromagnetic brake rotor 158 is fixedly connected with the rotating shaft 130 through a flat key; so that the rotation shaft 130 drives the second electromagnetic brake rotor 158 to rotate together; one end of the second electromagnetic brake coil seat 159 is fixedly arranged on the inner wall of the second fixing seat 157, and the other end of the second electromagnetic brake coil seat 159 is connected with the second electromagnetic brake moving plate 158.
When the flat arm 700 needs to be fixed, the second electromagnetic brake coil seat 159 is electrified, so that the second electromagnetic brake coil seat 159 tightly adsorbs the second electromagnetic brake moving plate 158, and the second electromagnetic brake moving plate 158 cannot rotate, thereby driving the rotating shaft 130 to rotate, and locking the flat arm 700 is completed.
As shown in fig. 5, the flat folding mechanism 131 includes a third timing pulley 132, a fourth timing pulley 133, a second timing belt 134, and a fourth driving device 135; wherein the fourth driving device 135 is fixedly disposed between the upper and lower plate arms 125 and 126; the third synchronous pulley 132 is fixedly arranged on the rotating shaft 130, the fourth synchronous pulley 133 is arranged on the fourth driving device 135, and the third synchronous pulley 132 and the fourth synchronous pulley 133 are connected through the second synchronous belt 134, so that the flat panel detector base 900 is driven to be folded.
The flat panel detector base 900 is disposed on the flat panel arm 700, and the flat panel detector base 900 is used for mounting a flat panel detector body. And can drive the flat panel detector body to move along the XY plane, the flat panel detector base 900 is connected with the flat panel arm 700 through the rotating shaft 130, and the flat panel arm 700 is provided with the flat panel folding mechanism 131. The rotation shaft 130 is rotatably disposed between the upper flat arm 125 and the lower flat arm 126, and drives the fourth synchronous pulley 133 to rotate through the fourth driving device 135, and drives the third synchronous pulley 132 to rotate through the second synchronous belt 134, so that the rotation shaft 130 rotates, thereby driving the flat panel detector base 900 to rotate, and folding and unfolding of the flat panel detector body are completed.
Further, a connection post is provided between the upper and lower plate arms 125 and 126 for synchronous movement of the upper and lower plate arms 125 and 126.
Further, the upper plate arm 125 and the lower plate arm 126 are each arc-shaped.
Example IV
This embodiment is a further refinement of embodiment two.
As shown in FIG. 9, flat panel detector base 900 includes bottom plate 136; longitudinal sliding components are arranged on the bottom plate 136, and the longitudinal sliding components are respectively arranged on two sides of the bottom plate 136; the longitudinal slide assembly includes a longitudinal slide 137, a longitudinal slide rail 138, and an intermediate plate 139; wherein the longitudinal slide block 137 is fixed on the bottom plate 136, and the middle plate 139 is fixedly connected with the longitudinal slide rail 138; the longitudinal slide rail 138 is slidably disposed on the longitudinal slide block 137;
the longitudinal slide assembly further includes a longitudinal drive 140 and a gear rack 141; wherein the longitudinal driving device 140 is fixedly arranged on the middle plate 139, and the rack 141 is arranged at the side edge of the longitudinal driving device 140; the longitudinal driving device 140 is further provided with a third gear, and the third gear is matched with the rack 141 and is used for moving the flat panel detector base 900 up and down;
as shown in fig. 9, flat panel detector base 900 also includes a lateral movement assembly; the lateral movement assembly comprises a slide bar 142, a lead screw 143 and a lateral drive 144; wherein, the slide bar 142 and the screw rod 143 are arranged on the middle plate 139, a transverse slide block 145 is arranged on the slide bar 142 in a sliding way, and a screw nut 146 is arranged on the screw rod 143; the transverse sliding block 145 and the screw nut 146 are fixedly connected with the flat panel detector body;
the transverse driving device 144 is fixedly arranged on the intermediate plate 139, a first transverse synchronous pulley 147 is fixedly arranged on the transverse driving device 144, a second transverse synchronous pulley 148 is arranged on the lead screw 143, and the first transverse synchronous pulley 147 and the second transverse synchronous pulley 148 are connected through a third synchronous belt 149.
The third gear is driven to rotate by the longitudinal driving device 140, and the transverse moving assembly is driven to move up and down by the engagement of the third gear and the rack 141, so that the flat panel detector body is driven to move up and down.
The first transverse synchronous pulley 147 is driven to rotate by the transverse driving device 144, the first transverse synchronous pulley 147 drives the second transverse synchronous pulley 148 to rotate by the third synchronous belt 149, so that the screw nut 146 is driven to move, and the screw nut 146 is fixedly connected with the flat panel detector body, so that the flat panel detector body is driven to move left and right.
In combination, the telescopic movement of the flat panel detector body and the X-ray tube on the horizontal plane can be realized through the flat panel arm 700 and the bulb tube arm 600; meanwhile, the flat panel detector body and the X-ray tube can be folded and unfolded through the flat panel folding mechanism 131 and the tube folding mechanism 120.
The flat panel detector base 900 can realize the transverse (Y direction) and longitudinal (Z direction) movement of the flat panel detector body; thus, when the flat panel arm 700 and the bulb arm 600 move to the working positions with the flat panel detector body and the X-ray bulb, the flat panel folding mechanism 131 and the bulb folding mechanism 120 drive the flat panel detector body and the X-ray bulb to be unfolded, and the X-ray bulb reaches a predetermined position; the flat panel detector base 900 then drives the flat panel detector body to move to the working position laterally or longitudinally to meet the working requirements of CBCT.
The device designed in the invention is compact, can be independently debugged, is precise in matching of all the motion guide components, and can provide accurate enough motion positions for the CBCT bulb tube and the flat panel detector.
In addition, after the system is retracted, the flat arm 700 and the bulb arm 600 can mutually intersect, so that the bulb arm 600 and the flat arm 700 can be retracted to two sides of the frame of the accelerator body 150, and a larger working space is reserved for medical technicians.
Example five
As shown in fig. 12, 13 and 14, an angle acquisition circuit of an on-board imaging device of a medical accelerator, the acquisition circuit of a first angle measurement device 152 includes: chip J6, chip U11, chip U12 and chip U8;
as shown in fig. 14, pin 2 of the chip J6 is connected with a power supply, pin 3 of the chip J6 is connected with pin 6 of the chip U11, pin 4 of the chip J6 is connected with pin 4 of the chip U11, pin 5 of the chip J6 is connected with pin 11 of the converter U10E, and pin 6 of the chip J6 is connected with pin 9 of the converter U10D;
as shown in fig. 13, pin 1 of the chip U11 is connected with pin 24 of the chip U8; the pin No. 2 and the pin No. 3 of the chip U11 are connected with a power supply; the pin 5 of the chip U11 is grounded;
as shown in fig. 14, pin 12 of the inverter U10E is connected to one end of the resistor R14 and one end of the resistor R17, respectively; the other end of the resistor R14 is connected with a pin 3 of the chip U12, the other end of the resistor R17 is connected with a capacitor C17, and the other end of the capacitor C17 is grounded;
as shown in fig. 14, pin 10 of the inverter U10D is connected to one end of the resistor R18 and one end of the resistor R16, respectively; the other end of the resistor R18 is connected with one end of the capacitor C19, and the other end of the capacitor C19 is grounded; the other end of the resistor R16 is connected with a No. 2 pin of the chip U12; the capacitor C19 and the capacitor C17 are also connected with the pin 1 of the chip J7.
As shown in fig. 13, pin No. 5 of the chip U12 is grounded; the pin 6 of the chip U12 is respectively connected with the pin 5 of the resistor R15 and the transformer U5C; the other end of the resistor R15 is connected with a power supply; the No. 6 pin of the converter U5C is connected with the No. 9 pin of the converter U5D, and the No. 8 pin of the converter U5D is connected with the No. 28 pin of the chip U8;
the pin 8 of the chip U12 is connected with a power supply;
as shown in fig. 12, 13 and 14, the acquisition circuit of the second angle measurement device 153 includes: chip J7, chip U17, chip U19, and chip U8;
the pin 2 of the chip J7 is connected with a power supply, the pin 3 of the chip J7 is connected with the pin 6 of the chip U17, the pin 4 of the chip J7 is connected with the pin 4 of the chip U17, the pin 5 of the chip J7 is connected with the pin 5 of the converter U10B, and the pin 6 of the chip J7 is connected with the pin 3 of the converter U10A;
as shown in fig. 13, pin 1 of the chip U17 is connected with pin 24 of the chip U8; the pin No. 2 and the pin No. 3 of the chip U17 are connected with a power supply; the pin 5 of the chip U17 is grounded;
the pin 4 of the converter U10B is connected with one end of a resistor R21 and one end of a resistor R27 respectively; the other end of the resistor R21 is connected with a pin 3 of the chip U19, the other end of the resistor R27 is connected with a capacitor C23, and the other end of the capacitor C23 is grounded;
the pin 2 of the converter U10A is respectively connected with one end of a resistor R29 and one end of a resistor R25; the other end of the resistor R29 is connected with one end of the capacitor C25, and the other end of the capacitor C25 is grounded; the other end of the resistor R25 is connected with a No. 2 pin of the chip U19;
the pin 5 of the chip U19 is grounded; the pin 6 of the chip U19 is respectively connected with the pin 1 of the resistor R23 and the converter U5A; the other end of the resistor R23 is connected with a power supply; the No. 2 pin of the converter U5A is connected with the No. 3 pin of the converter U5B, and the No. 4 pin of the converter U5B is connected with the No. 23 pin of the chip U8;
and pin 8 of the chip U19 is connected with a power supply.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a medical accelerator machine carries image device which characterized in that: the mounting device comprises a mounting base (100), wherein bosses are respectively arranged at the upper end and the lower end of the mounting base (100), and comprise a first boss (200) and a second boss (300); a first clamping plate (400) and a second clamping plate (500) are arranged between the first boss (200) and the second boss (300);
a first installation area is formed between the first boss (200) and the first clamping plate (400), a second installation area is formed between the second boss (300) and the second clamping plate (500), and a third installation area is formed between the first clamping plate (400) and the second clamping plate (500); the first mounting region and the second mounting region are used for mounting a bulb arm (600); the third mounting area is used for mounting the flat arm (700); a bulb base (800) is arranged at the end part of the bulb arm (600), and the bulb base (800) is used for installing an X-ray bulb; a flat panel detector base (900) is arranged at the end part of the flat panel arm (700); the flat panel detector base (900) is used for installing a flat panel detector body;
the two sides of the mounting base (100) are respectively provided with a driving device, which comprises a first driving device (110) and a second driving device (111), wherein the first driving device (110) is used for driving the bulb arm (600) to slide in the mounting base (100), and the second driving device (111) is used for driving the flat plate arm (700) to slide in the mounting base (100); the end part of the bulb arm (600) is also provided with a bulb folding mechanism (120), and the bulb folding mechanism (120) is used for folding the bulb base (800); the end part of the flat arm (700) is also provided with a flat folding mechanism (131), and the flat folding mechanism (131) is used for folding the flat detector base (900); be provided with first angle measuring device (152) on bulb folding mechanism (120), be provided with second angle measuring device (153) on dull and stereotyped folding mechanism (131), first angle measuring device (152) are used for measuring the turned angle of bulb folding mechanism (120), and second angle measuring device (153) are used for measuring the turned angle of dull and stereotyped folding mechanism (131).
2. The medical accelerator on-board imaging apparatus of claim 1, wherein: the bulb arm (600) comprises an upper bulb arm (112) and a lower bulb arm (113); wherein, upper bulb arm (112) sets up in first installation region, and lower bulb arm (113) sets up in the second installation region.
3. The medical accelerator on-board imaging apparatus of claim 2, wherein: a first sliding rail (114) is further arranged above the upper bulb arm (112), and a second sliding rail (115) is further arranged below the lower bulb arm (113); a first chute base (116) and a second chute base (117) are respectively arranged in the first installation area and the second installation area, and the first chute base (116) and the second chute base (117) are respectively matched with a first sliding rail (114) and a second sliding rail (115).
4. A medical accelerator on-board imaging device according to claim 3, wherein: a first driving tooth (118) is further arranged at the lower end of the lower bulb arm (113), and the first driving tooth (118) is matched with a first gear arranged on the first driving device (110) and used for sliding the bulb arm (600).
5. The medical accelerator on-board imaging apparatus of claim 2, wherein: a rotating shaft (119) is arranged between the upper bulb arm (112) and the lower bulb arm (113), and a bulb base (800) is fixedly connected to the rotating shaft (119); the rotating shaft (119) is connected with the bulb tube folding mechanism (120);
the bulb folding mechanism (120) comprises a first synchronous pulley (121), a second synchronous pulley (122), a first synchronous belt (123) and a third driving device (124); wherein, the third driving device (124) is fixedly arranged between the upper bulb arm (112) and the lower bulb arm (113); the first synchronous belt wheel (121) is fixedly arranged on the rotating shaft (119), the second synchronous belt wheel (122) is arranged on the third driving device (124), and the first synchronous belt wheel (121) and the second synchronous belt wheel (122) are connected through the first synchronous belt (123), so that the bulb tube base (800) is driven to be folded.
6. The medical accelerator on-board imaging apparatus of claim 1, wherein: the plate arm (700) includes an upper plate arm (125) and a lower plate arm (126); wherein the upper plate arm (125) and the lower plate arm (126) are disposed within a third mounting region;
a third chute base (128) is arranged above the third installation area, and a fourth chute base (160) is arranged below the third installation area; the upper flat plate arm (125) is provided with a third sliding rail (127), the lower flat plate arm (126) is provided with a fourth sliding rail (161), the third sliding rail (127) is matched with the third sliding groove base (128), and the fourth sliding rail (161) is matched with the fourth sliding groove base (160) and used for sliding the flat plate arm (700) in the installation base (100).
7. The medical accelerator on-board imaging apparatus of claim 6, wherein: a second driving tooth (129) is further arranged at the lower end of the lower flat plate arm (126), and the second driving tooth (129) is matched with a second gear arranged on the second driving device (111) for sliding of the flat plate arm (700).
8. The medical accelerator on-board imaging apparatus of claim 6, wherein: a rotating shaft (130) is arranged between the upper flat arm (125) and the lower flat arm (126), and a flat panel detector base (900) is fixedly connected to the rotating shaft (130); the rotating shaft (130) is connected with the flat plate folding mechanism (131);
the flat plate folding mechanism (131) comprises a third synchronous pulley (132), a fourth synchronous pulley (133), a second synchronous belt (134) and a fourth driving device (135); wherein the fourth driving device (135) is fixedly arranged between the upper flat plate arm (125) and the lower flat plate arm (126); the third synchronous pulley (132) is fixedly arranged on the rotating shaft (130), the fourth synchronous pulley (133) is arranged on the fourth driving device (135), and the third synchronous pulley (132) and the fourth synchronous pulley (133) are connected through the second synchronous belt (134), so that the flat panel detector base (900) is driven to be folded.
9. The medical accelerator on-board imaging apparatus of claim 1, wherein: the flat panel detector base (900) includes a base plate (136); longitudinal sliding components are arranged on the bottom plate (136), and the longitudinal sliding components are respectively arranged on two sides of the bottom plate (136); the longitudinal sliding component comprises a longitudinal sliding block (137), a longitudinal sliding rail (138) and an intermediate plate (139); wherein, the longitudinal sliding block (137) is fixed on the bottom plate (136), and the middle plate (139) is fixedly connected with the longitudinal sliding rail (138); the longitudinal sliding rail (138) is arranged on the longitudinal sliding block (137) in a sliding way;
the longitudinal sliding assembly further comprises a longitudinal driving device (140) and a rack (141); wherein the longitudinal driving device (140) is fixedly arranged on the middle plate (139), and the rack (141) is arranged at the side edge of the longitudinal driving device (140); the longitudinal driving device (140) is also provided with a third gear which is matched with the rack (141) and is used for moving the flat panel detector base (900) up and down.
10. The medical accelerator on-board imaging apparatus of claim 9, wherein: the flat panel detector base (900) also includes a lateral movement assembly; the transverse moving assembly comprises a sliding rod (142), a lead screw (143) and a transverse driving device (144); wherein, the slide bar (142) and the screw (143) are arranged on the middle plate (139), a transverse slide block (145) is arranged on the slide bar (142) in a sliding way, and a screw nut (146) is arranged on the screw (143); the transverse sliding block (145) and the screw nut (146) are fixedly connected with the flat panel detector body;
the transverse driving device (144) is fixedly arranged on the middle plate (139), a first transverse synchronous pulley (147) is fixedly arranged on the transverse driving device (144), a second transverse synchronous pulley (148) is arranged on the lead screw (143), and the first transverse synchronous pulley (147) is connected with the second transverse synchronous pulley (148) through a third synchronous belt (149).
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| CN202311026361.9A CN116747461B (en) | 2023-08-15 | 2023-08-15 | Medical accelerator airborne image device |
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