CN109954228B - Electronic radiation field image system positioning device for medical accelerator - Google Patents
Electronic radiation field image system positioning device for medical accelerator Download PDFInfo
- Publication number
- CN109954228B CN109954228B CN201811591379.2A CN201811591379A CN109954228B CN 109954228 B CN109954228 B CN 109954228B CN 201811591379 A CN201811591379 A CN 201811591379A CN 109954228 B CN109954228 B CN 109954228B
- Authority
- CN
- China
- Prior art keywords
- linear
- positioning
- backlash
- support
- turnover
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Images
Classifications
-
- 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
- A61N5/103—Treatment planning systems
-
- 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
-
- 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
- A61N2005/1054—Monitoring, verifying, controlling systems and methods for verifying the position of the patient with respect to the radiation beam using a portal imaging system
-
- 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
- A61N2005/1092—Details
Landscapes
- 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)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
The invention discloses an electronic radiation field image system positioning device for a medical accelerator, and belongs to the technical field of radiotherapy equipment. A turnover mechanism in the device is arranged on a base, the turnover mechanism realizes rotation around an installation axis, a turnover positioning mechanism arranged on a turnover positioning mechanism carries out mechanical limit on the turnover angle of the turnover mechanism, and a rotation positioning clearance eliminating mechanism arranged on the turnover mechanism eliminates a transmission side clearance of the turnover mechanism; the linear motion mechanism is arranged on the turnover mechanism, the ray detection device is arranged on the linear motion mechanism, the linear positioning mechanism arranged on the turnover mechanism carries out mechanical limit on the linear motion of the linear motion mechanism, and the linear positioning gap eliminating mechanism in the linear motion mechanism eliminates the transmission side gap of the linear transmission mechanism. The invention can rapidly and reliably repeatedly position the position of the ray detection device through the turnover mechanism and the linear motion mechanism.
Description
Technical Field
The invention belongs to the technical field of radiotherapy equipment, and particularly relates to an electronic radiation field image system positioning device for a medical accelerator.
Background
In the process of carrying out accurate radiotherapy on a tumor patient by using an accelerator, the consistency of an actual irradiation field and a planned irradiation field is required to be verified in real time, and the positioning precision and the repeated positioning precision of the radiation detection device are the guarantee of accurate real-time verification of the irradiation field. The existing commonly used connecting rod turnover mechanism is complex in assembly, large in occupied space and not beneficial to modular production, positioning accuracy is related to the quality of debugging personnel, and the quality stability of batch production is difficult to control.
Disclosure of Invention
In view of this, the present invention provides a positioning device of an electronic portal image system for a medical accelerator, which can repeatedly position a radiation detection device quickly and reliably by a turning mechanism and a linear motion mechanism.
An electronic field image system positioning device for a medical accelerator comprises a base, a turnover mechanism, a rotating positioning gap eliminating mechanism, a turnover positioning mechanism, a linear motion mechanism, a linear positioning gap eliminating mechanism, a linear positioning mechanism and a ray detection device;
the overturning mechanism is arranged on the base, the overturning mechanism realizes rotation around an installation axis, the overturning positioning mechanism arranged on the overturning positioning mechanism carries out mechanical limit on the overturning angle of the overturning mechanism, and the rotating positioning gap eliminating mechanism arranged on the overturning mechanism eliminates the transmission side gap of the overturning mechanism; the linear motion mechanism is arranged on the turnover mechanism, the ray detection device is arranged on the linear motion mechanism, the linear positioning mechanism arranged on the turnover mechanism carries out mechanical limit on the linear motion of the linear motion mechanism, and the linear positioning gap eliminating mechanism in the linear motion mechanism eliminates the transmission side gap of the linear transmission mechanism.
Further, the overturning positioning mechanism comprises an overturning positioning block and an adjusting screw, and the linear positioning mechanism comprises a linear positioning block and an adjusting screw; and the adjusting screws on the overturning positioning block and the linear positioning block are used for finely adjusting the position needing to be limited.
Further, the base comprises a mounting base plate, a main support column, an auxiliary support column and a bearing seat; the main supporting column and the auxiliary supporting column are vertically fixed on the mounting base plate, and the bearing seat is mounted on the auxiliary supporting column.
Furthermore, the turnover mechanism comprises a rotary speed reducer, a turnover driving speed reducing motor, a rotary positioning clearance eliminating mechanism, a rotating shaft, a linear motion support and an angle sampler;
the rotary speed reducer is fixedly connected with the main supporting column, the overturning driving speed reducing motor is fixedly connected with the rotary speed reducer, the rotary speed reducer is fixedly connected with the rotating positioning gap eliminating mechanism, the rotating positioning gap eliminating mechanism is fixedly connected with the linear motion support, the linear motion support is installed on the bearing block through the rotating shaft, the rotating shaft is fixedly connected with the angle sampler, when the overturning driving speed reducing motor works, the linear motion support performs overturning motion, and the angle sampler performs angle position sampling of the linear motion support.
Furthermore, the rotary positioning anti-backlash mechanism comprises a rotary anti-backlash support, a rotary anti-backlash output shaft, a rotary anti-backlash spring, a large limiting ring, a small limiting ring and a set screw;
the rotating anti-backlash output shaft is concentrically arranged in a central mounting hole of the rotating anti-backlash support, the rotating anti-backlash spring is radially embedded into mounting grooves of the rotating anti-backlash support and the rotating anti-backlash output shaft at the same time, so that the rotating anti-backlash support and the rotating anti-backlash output shaft have relative elastic rotation capacity, and the large limiting ring and the small limiting ring are respectively embedded into the rotating anti-backlash support and the rotating anti-backlash output shaft and are fixed through set screws, so that the limiting effect on the rotating anti-backlash spring is achieved.
Further, the linear motion mechanism comprises a linear module, a linear driving speed reduction motor, a photoelectric switch assembly and an adapter plate;
the linear driving speed reducing motor is fixedly connected with the linear module, a linear sliding block of the linear module is fixedly connected with the linear positioning gap eliminating mechanism, the linear positioning gap eliminating mechanism is fixedly connected with the adapter plate, when the linear driving speed reducing motor works, the linear sliding block of the linear module makes linear reciprocating motion, the linear sliding block of the linear module drives the ray detection device to extend out or retract through the adapter plate, the photoelectric switch assembly judges the telescopic limit position of the ray detection device, and the photoelectric switch assembly is fixedly connected with the linear module and is adjustable in position.
Furthermore, the linear positioning anti-backlash mechanism comprises a linear anti-backlash support, a linear anti-backlash piston and a compression spring, the linear anti-backlash piston and the compression spring are positioned in an installation groove of the linear anti-backlash support, the compression spring is in a pre-compression state, and the linear anti-backlash piston can move along the axial direction of the compression spring under the action of external force;
the upper end and the lower end of the linear anti-backlash support are respectively fixedly connected with the adapter plate and the linear module slider, when the linear motion mechanism runs to the ray detection device and is located at an appointed position, the linear positioning block is in contact with the linear anti-backlash piston and compresses the compression spring to limit the adapter plate to continue moving, and the reverse force generated by the compression spring is transmitted to the linear module through the linear anti-backlash support, so that the linear transmission pair is in close contact, the transmission backlash of the linear transmission mechanism is eliminated, and the ray detection device is guaranteed to return to a fixed position after reciprocating for many times.
Has the advantages that:
(1) the invention adopts the rotary positioning clearance eliminating mechanism and the turnover positioning block to ensure that the corner positioning is reliable and has no return difference, and can ensure that the corner positioning is rotated to the same position every time.
(2) The invention adopts the linear positioning gap eliminating mechanism and the linear positioning block to ensure that the ray detection device is reliably positioned without return difference and can ensure that each time the ray detection device is linearly displaced to the same position.
(3) The invention adopts the anti-collision mechanism and the protective cover to prevent the ray detection device from being impacted by external force.
(4) The invention adopts the speed reducing motor, and simplifies the whole transmission structure of the device.
Drawings
FIG. 1 is a schematic view of the initial position of a radiation detection device of the present invention;
FIG. 2 is a schematic view of the positioning of a radiation detection device constructed in accordance with the present invention;
FIG. 3 is a schematic structural view of a rotational positioning anti-backlash mechanism of the present invention;
FIG. 4 is a schematic structural diagram of the linear positioning anti-backlash mechanism of the present invention.
Wherein, 1-an installation base plate, 2-a main supporting column, 3-an auxiliary supporting column, 4-a rotary speed reducer, 5-a turnover driving speed reducing motor, 6-a bearing seat, 7-a rotating shaft, 8-a linear motion support, 9-a linear module, 10-a linear driving speed reducing motor, 11-a limiting block, 12-an adapter plate, 13-a protective cover, 14-a ray detection device, 15-an anti-collision mechanism, 16-an angle sampler, 17-a photoelectric switch component, 18-a rotary positioning anti-backlash mechanism, 18-1-a rotary anti-backlash support, 18-2-a rotary anti-backlash output shaft, 18-3-a rotary anti-backlash spring, 18-4-a large limiting ring, 18-5-a small limiting ring and 18-6-a fastening screw, 19-linear positioning clearance eliminating mechanism, 19-1-linear clearance eliminating support, 19-2-linear clearance eliminating piston, 19-3-compression spring, 20-turnover positioning block, 21-adjusting screw, 22-linear positioning block and 23-adjusting screw.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
As shown in the attached drawings 1 and 2, the invention provides an electronic portal image system positioning device for a medical accelerator, which comprises a turnover mechanism, a linear motion mechanism, a base, a turnover positioning mechanism, a linear positioning mechanism, an anti-collision mechanism and a ray detection device, wherein the turnover mechanism is arranged on the base;
the base comprises a mounting base plate 1, a main supporting column 2, an auxiliary supporting column 3 and a bearing seat 6;
the turnover mechanism comprises a rotary speed reducer 4, a turnover driving speed reducing motor 5, a rotary positioning clearance eliminating mechanism 18, a rotating shaft 7, a linear motion support 8 and an angle sampler 16;
the linear motion mechanism comprises a linear module 9, a linear driving speed reducing motor 10, a photoelectric switch assembly 17, a linear positioning gap eliminating mechanism 19 and an adapter plate 12;
the overturning positioning mechanism comprises an overturning positioning block 20 and an adjusting screw 21;
the linear positioning mechanism comprises a linear positioning block 22 and an adjusting screw 23;
the mounting base plate 1 in the base plate is fixedly connected with a main supporting column 2, the mounting base plate 1 is fixedly connected with an auxiliary supporting column 3, the main supporting column 2 is fixedly connected with a rotary speed reducer 4 in the turnover mechanism, and the inner ring of a bearing seat 6 is fixedly connected with a rotating shaft 7 in the turnover mechanism;
a linear motion support 8 in the turnover mechanism is fixedly connected with a linear module 9 in the linear motion mechanism;
the adapter plate 12 in the linear motion mechanism is fixedly connected with the protective cover 13;
the turnover positioning mechanism is fixedly connected with the mounting base plate 1, the position of the turnover positioning mechanism can be adjusted, the position of an adjusting screw is adjusted, when the turnover mechanism works until the mounting plane of the ray detection device 14 is perpendicular to the mounting plane of the mounting base plate 1, the adjusting screw is in contact with a limiting block 11 in the turnover mechanism, the turnover angle is positioned, and a locking nut is screwed to position the adjusting screw;
the linear positioning mechanism is fixedly connected with a linear motion support 8 in the turnover mechanism, the position of the linear positioning mechanism is adjustable, the position of an adjusting screw is adjusted, when the linear motion mechanism works to ensure that the ray detection device 14 moves to a specified position, the adjusting screw is contacted with a linear positioning gap eliminating mechanism 19 in the linear motion mechanism, the position of the ray detection device 14 is positioned, and a locking nut is screwed to position the adjusting screw;
the mounting base plate 1 in the base plate is fixedly connected with the main supporting column 2 and the auxiliary supporting column 3 respectively, the auxiliary supporting column 3 is fixedly connected with the bearing seat 6, and the inner ring of the bearing seat 6 is concentric with the mounting positioning hole of the rotary speed reducer 4 of the main supporting column 2;
the rotary speed reducer 4 in the turnover mechanism adopts a rotary support and a ring surface enveloping worm structure, a worm gear and a worm are in surface contact, the transmission torque is large, the motion is stable, the noise is low, the service life is long, the turnover driving speed reducing motor 5 is fixedly connected with the rotary speed reducer 4, the rotary speed reducer 4 is fixedly connected with the rotary positioning gap eliminating mechanism 18, the rotary positioning gap eliminating mechanism 18 is fixedly connected with the linear motion support 8, the linear motion support 8 is fixedly connected with the rotating shaft 7, the rotating shaft 7 is fixedly connected with the angle sampler 16, when the turnover driving speed reducing motor 5 works, the linear motion support 8 makes turnover motion, and the angle sampler 16 samples the angle position of the linear motion support 8;
as shown in figure 3, the rotary positioning anti-backlash mechanism comprises a rotary anti-backlash support 18-1, a rotary anti-backlash output shaft 18-2, a rotary anti-backlash spring 18-3, a large limiting ring 18-4, a small limiting ring 18-5 and a set screw 18-6;
the rotary anti-backlash output shaft 18-2 is concentrically arranged in a central mounting hole of the rotary anti-backlash support 18-1, the rotary anti-backlash spring 18-3 is radially embedded into mounting grooves of the rotary anti-backlash support 18-1 and the rotary anti-backlash output shaft 18-2 at the same time, so that the rotary anti-backlash support 18-1 and the rotary anti-backlash output shaft 18-2 have relative elastic rotation capacity, and the large limiting ring 18-4 and the small limiting ring 18-5 are respectively embedded into the rotary anti-backlash support 18-1 and the rotary anti-backlash output shaft 18-2 and fixed through the set screw 18-6, so that the limiting effect on the rotary anti-backlash spring 18-3 is achieved.
The rotating clearance elimination support 18-1 and the rotating clearance elimination output shaft 18-2 are respectively fixedly connected with the output shaft of the rotary speed reducer 4 and the linear motion support 8, when the turnover mechanism works until the installation plane of the ray detection device 14 is vertical to the installation plane of the installation base plate 1, a turnover positioning block 20 in the turnover positioning mechanism prevents the linear motion support 8 from continuously turning over, and a reverse torque generated by a rotating clearance elimination spring 18-3 enables a worm wheel and a worm rotating pair of the rotary speed reducer 4 to be in close contact, so that the transmission side clearance of the rotary speed reducer 4 is eliminated, and the angle positioning precision of the ray detection device 14 is ensured;
the linear driving speed reducing motor 10 in the linear motion mechanism is fixedly connected with the linear module 9, a linear sliding block of the linear module 9 is fixedly connected with the linear positioning gap eliminating mechanism 19, the linear positioning gap eliminating mechanism 19 is fixedly connected with the adapter plate 12, when the linear driving speed reducing motor 10 works, the linear sliding block of the linear module 9 makes linear reciprocating motion, the ray detection device 14 stretches out or retracts, the photoelectric switch assembly 17 judges the telescopic limit position of the ray detection device 14, and the photoelectric switch assembly 17 is fixedly connected with the linear module 9 and can adjust the position.
As shown in figure 4, the linear positioning anti-backlash mechanism 19 comprises a linear anti-backlash support 19-1, a linear anti-backlash piston 19-2 and a compression spring 19-3, the linear anti-backlash piston 19-2 and the compression spring 19-3 are located in an installation groove of the linear anti-backlash support 19-1, the compression spring 19-3 is in a pre-compression state, and the linear anti-backlash piston 19-2 can move along the axial direction of the compression spring 19-3 under the action of external force.
The upper end and the lower end of the linear anti-backlash support 19-1 are respectively fixedly connected with the adapter plate 12 and the linear module 9 slide block, when the linear motion mechanism runs to the ray detection device 14 to be at a designated position, the linear positioning block 22 is contacted with the linear anti-backlash piston 19-2 and compresses the compression spring 19-3 to limit the adapter plate 12 to continue moving, and the reverse force generated by the compression spring 19-3 is transmitted to the linear module 9 through the linear anti-backlash support 19-1, so that the linear transmission pair is in close contact, the transmission backlash of the linear transmission mechanism is eliminated, and the ray detection device 14 is ensured to return to a fixed position after multiple reciprocating motions.
The protective cover 13 is fixedly connected with the ray detection device 14, so that the ray detection device 14 is prevented from being directly impacted;
the anti-collision mechanism 15 is fixedly connected with the ray detection device protective cover 13, when the anti-collision mechanism 15 is extruded by an external force and then displaces, the anti-collision switch of the anti-collision mechanism 15 is triggered to send a collision signal to the host, and the sensitivity of the anti-collision mechanism 15 can be adjusted;
after the positioning device of the electronic portal image system receives the positioning instruction, the turnover mechanism firstly performs unfolding action and runs to the position where the mounting plane of the ray detection device 14 is vertical to the mounting plane of the mounting base plate 1, and then the linear motion mechanism performs stretching action to position the ray detection device 14 at the specified position; in the unfolding process, when the anti-collision mechanism 15 is extruded and displaced, the electronic portal image system positioning device reversely rotates to an initial angle, in the extending process, when the anti-collision mechanism 15 is extruded and displaced, the electronic portal image system positioning device reversely moves to an initial position, after the positioning of the ray detection device 14 is completed and the positioning of the accelerator is completed, when the anti-collision mechanism 15 is extruded and displaced, the accelerator performs corresponding treatment according to a collision signal, and after the collision reason is relieved and a fault relieving button is pressed, the next step of action can be performed;
after the electronic portal image system positioning device receives the reset instruction, the electronic portal image system positioning device completes retraction and then completes retraction and turnover; in the resetting process, when the anti-collision mechanism 15 is extruded and displaced, the positioning device of the electronic portal image system reversely acts, and the next action can be performed after the collision reason is relieved and the fault relieving button is pressed.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. An electronic radiation field image system positioning device for a medical accelerator is characterized by comprising a base, a turnover mechanism, a rotating positioning gap eliminating mechanism, a turnover positioning mechanism, a linear motion mechanism, a linear positioning gap eliminating mechanism, a linear positioning mechanism and a ray detection device;
the overturning positioning mechanism comprises an overturning positioning block and an adjusting screw, and the linear positioning mechanism comprises a linear positioning block and an adjusting screw; the adjusting screws on the turning positioning block and the linear positioning block are used for finely adjusting the position to be limited;
the overturning mechanism is arranged on the base, the overturning mechanism realizes rotation around an installation axis, the overturning positioning mechanism arranged on the overturning positioning mechanism carries out mechanical limit on the overturning angle of the overturning mechanism, and the rotating positioning gap eliminating mechanism arranged on the overturning mechanism eliminates the transmission side gap of the overturning mechanism; the linear motion mechanism is arranged on the turnover mechanism, the ray detection device is arranged on the linear motion mechanism, the linear positioning mechanism arranged on the turnover mechanism carries out mechanical limit on the linear motion of the linear motion mechanism, and the linear positioning gap eliminating mechanism in the linear motion mechanism eliminates the transmission side gap of the linear transmission mechanism;
the turnover mechanism comprises a rotary speed reducer, a turnover driving speed reducing motor, a rotary positioning clearance eliminating mechanism, a rotating shaft, a linear motion support and an angle sampler;
the rotary speed reducer is fixedly connected with the main supporting column, the overturning driving speed reducing motor is fixedly connected with the rotary speed reducer, the rotary speed reducer is fixedly connected with the rotary positioning gap eliminating mechanism, the rotary positioning gap eliminating mechanism is fixedly connected with the linear motion support, the linear motion support is arranged on the bearing block through a rotating shaft, the rotating shaft is fixedly connected with the angle sampler, when the overturning driving speed reducing motor works, the linear motion support performs overturning motion, and the angle sampler performs angle position sampling of the linear motion support;
the linear motion mechanism comprises a linear module, a linear driving speed reducing motor, a photoelectric switch assembly and an adapter plate;
the linear driving speed reducing motor is fixedly connected with the linear module, a linear sliding block of the linear module is fixedly connected with the linear positioning gap eliminating mechanism, the linear positioning gap eliminating mechanism is fixedly connected with the adapter plate, when the linear driving speed reducing motor works, the linear sliding block of the linear module makes linear reciprocating motion, the linear sliding block of the linear module drives the ray detection device to extend out or retract through the adapter plate, the photoelectric switch assembly judges the telescopic limit position of the ray detection device, and the photoelectric switch assembly is fixedly connected with the linear module and is adjustable in position.
2. The positioning device of an electronic portal imaging system for a medical accelerator according to claim 1, wherein the base comprises a mounting base plate, a main support column, an auxiliary support column and a bearing seat; the main supporting column and the auxiliary supporting column are vertically fixed on the mounting base plate, and the bearing seat is mounted on the auxiliary supporting column.
3. The positioning device of the electronic portal image system for the medical accelerator according to claim 1, wherein the rotational positioning anti-backlash mechanism comprises a rotational anti-backlash support, a rotational anti-backlash output shaft, a rotational anti-backlash spring, a large limit ring, a small limit ring and a set screw;
the rotating anti-backlash output shaft is concentrically arranged in a central mounting hole of the rotating anti-backlash support, the rotating anti-backlash spring is radially embedded into mounting grooves of the rotating anti-backlash support and the rotating anti-backlash output shaft at the same time, so that the rotating anti-backlash support and the rotating anti-backlash output shaft have relative elastic rotation capacity, and the large limiting ring and the small limiting ring are respectively embedded into the rotating anti-backlash support and the rotating anti-backlash output shaft and are fixed through set screws, so that the limiting effect on the rotating anti-backlash spring is achieved.
4. The positioning device of the electronic portal image system for the medical accelerator according to claim 3, wherein the linear positioning anti-backlash mechanism comprises a linear anti-backlash support, a linear anti-backlash piston and a compression spring, the linear anti-backlash piston and the compression spring are positioned in an installation groove of the linear anti-backlash support, the compression spring is in a pre-compression state, and the linear anti-backlash piston can move along the axial direction of the compression spring under the action of external force;
the upper end and the lower end of the linear anti-backlash support are respectively fixedly connected with the adapter plate and the linear module slider, when the linear motion mechanism runs to the ray detection device and is located at an appointed position, the linear positioning block is in contact with the linear anti-backlash piston and compresses the compression spring to limit the adapter plate to continue moving, and the reverse force generated by the compression spring is transmitted to the linear module through the linear anti-backlash support, so that the linear transmission pair is in close contact, the transmission backlash of the linear transmission mechanism is eliminated, and the ray detection device is guaranteed to return to a fixed position after reciprocating for many times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591379.2A CN109954228B (en) | 2018-12-25 | 2018-12-25 | Electronic radiation field image system positioning device for medical accelerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811591379.2A CN109954228B (en) | 2018-12-25 | 2018-12-25 | Electronic radiation field image system positioning device for medical accelerator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109954228A CN109954228A (en) | 2019-07-02 |
| CN109954228B true CN109954228B (en) | 2021-03-12 |
Family
ID=67023386
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811591379.2A Active CN109954228B (en) | 2018-12-25 | 2018-12-25 | Electronic radiation field image system positioning device for medical accelerator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109954228B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256434A (en) * | 2011-06-23 | 2011-11-23 | 山东新华医疗器械股份有限公司 | Same-source double-energy medical electron linear accelerator for image guided radiation therapy (IGRT) |
| CN203634660U (en) * | 2013-07-15 | 2014-06-11 | 上海联影医疗科技有限公司 | Radiotherapy equipment |
| WO2015167980A1 (en) * | 2014-04-28 | 2015-11-05 | Brigham And Women's Hospital, Inc. | Real-time margin adaptation |
| CN206648978U (en) * | 2017-03-13 | 2017-11-17 | 北京君和信达科技有限公司 | Back scattering imaging system |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0817597A (en) * | 1994-06-30 | 1996-01-19 | Toshiba Corp | High-frequency quadrupole linear accelerator |
| GB2334139B (en) * | 1998-02-05 | 2001-12-19 | Elekta Ab | Linear accelerator |
| US6888919B2 (en) * | 2001-11-02 | 2005-05-03 | Varian Medical Systems, Inc. | Radiotherapy apparatus equipped with an articulable gantry for positioning an imaging unit |
| CN102435218B (en) * | 2011-09-21 | 2013-11-06 | 成都利尼科医学技术发展有限公司 | Articulated phantom holder for medical linear accelerators |
| US10716956B2 (en) * | 2015-04-21 | 2020-07-21 | Our United Corporation | Radiotherapeutic device |
| CN108811286B (en) * | 2018-07-05 | 2020-03-31 | 中国工程物理研究院流体物理研究所 | Overturning platform suitable for linear induction accelerator cavity and overturning method thereof |
-
2018
- 2018-12-25 CN CN201811591379.2A patent/CN109954228B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102256434A (en) * | 2011-06-23 | 2011-11-23 | 山东新华医疗器械股份有限公司 | Same-source double-energy medical electron linear accelerator for image guided radiation therapy (IGRT) |
| CN203634660U (en) * | 2013-07-15 | 2014-06-11 | 上海联影医疗科技有限公司 | Radiotherapy equipment |
| WO2015167980A1 (en) * | 2014-04-28 | 2015-11-05 | Brigham And Women's Hospital, Inc. | Real-time margin adaptation |
| CN206648978U (en) * | 2017-03-13 | 2017-11-17 | 北京君和信达科技有限公司 | Back scattering imaging system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109954228A (en) | 2019-07-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104260106B (en) | A kind of joint module of stiffness variable | |
| CN208204444U (en) | A kind of construction management equipment based on BIM | |
| CN101152097A (en) | Multiple imaging system | |
| CN109954228B (en) | Electronic radiation field image system positioning device for medical accelerator | |
| CN102178542A (en) | Positron emission tomography imaging frame with variable structure | |
| CN111390664A (en) | Bearing ring inner surface grinding device for bearing machining and manufacturing | |
| CN104122281B (en) | Hollow shaft goniometer device | |
| CN107727673B (en) | Heavy-load precise centering adjusting device for thick pinhole collimator | |
| CN103801009A (en) | Two-dimensional mechanical rotating mechanism for radiotherapy | |
| CN210095666U (en) | Multidimensional moving device and endoscope operating device | |
| CN107441636B (en) | Novel collimator for radiotherapy and radiotherapy device | |
| US11963804B2 (en) | Anti-collision apparatus and radiotherapy device | |
| CN201197712Y (en) | Rotating mechanism | |
| CN106264580B (en) | Mechanical equipment of dual-nuclide multifunctional breast imaging system | |
| CN106730372B (en) | Positioning system for radiotherapy | |
| CN209228991U (en) | A kind of orientation adjusting device of working shaft | |
| CN219655649U (en) | Be used for geological disaster to administer engineering video monitoring device | |
| CN219828218U (en) | Medical first aid training action collection equipment | |
| CN203354556U (en) | Mobile digital medical X-ray radiography system upright column rotating mechanism | |
| CN112519697A (en) | Monitoring platform based on ADAS | |
| CN217311661U (en) | Gamma ray source changing device | |
| CN116098659B (en) | Ultrasonic guided automatic biopsy robot | |
| CN117123668B (en) | Multi-angle stamping device for stainless steel part | |
| CN109831058B (en) | Displacement actuator | |
| CN219645745U (en) | Head CT protection supporting component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |