CN1320466A - Blade driver of multi-blade collimator - Google Patents
Blade driver of multi-blade collimator Download PDFInfo
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- CN1320466A CN1320466A CN 00111020 CN00111020A CN1320466A CN 1320466 A CN1320466 A CN 1320466A CN 00111020 CN00111020 CN 00111020 CN 00111020 A CN00111020 A CN 00111020A CN 1320466 A CN1320466 A CN 1320466A
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Abstract
A blade driver of multi-blade collimator is composed of a blade transmission mechanism linked to each blade, a set of blade drive mechanism and a set of moving unit linked with the blade drive motor in blade drive mechanism. Only one set of blade drive mechanism and only on set of moving unit are needed. Its advantages are simple structure and low cost.
Description
The present invention relates to a kind of blade actuating device of multi-diaphragm collimator.
In order to improve the effect of radiation therapy, the external exposure radiotherapy of tumor is entering the precise radiotherapy epoch, and suitable shape, intensity modulated radiation therapy technical development are rapid, and multi-diaphragm collimator is an effective means of implementing this accurate radiotherapy.In order to obtain curative effect better, multi-diaphragm collimator is several to, tens pairs of developer blades, 40 pairs, 60 pairs blades up till now from originally.
At present, multi-diaphragm collimator mainly contains two kinds, and a kind of is manually plug-type, and a kind of is full-automatic microcomputer control multi-diaphragm collimator.A kind of collimator in back, each blade all have a corresponding cover individual motor and a driver drives, and its high efficiency can be controlled the motion of blade by microcomputer, and the data of treatment plan can be passed to the Control Computer of multi-diaphragm collimator by network.But, owing to used the motor and the driver of tens covers even covers up to a hundred, cost is increased greatly, involve great expense, influenced applying of this technology.
The blade actuating device that the purpose of this invention is to provide a kind of multi-diaphragm collimator reduces driving mechanism, reduces cost greatly, implements reliable.
The blade actuating device of multi-diaphragm collimator of the present invention, its major technique characteristics are: comprise that the blade drive mechanism, the cover blade driving mechanism and that link to each other with each blade overlap the mobile device that links to each other with the vane drive motor of this vane drive mechanism, vane drive mechanism cooperates with the blade drive mechanism.
A shared cover blade driving mechanism and the mobile device of the present invention finished mutliblade adjusting in turn.
The blade drive mechanism that links to each other with each blade of the present invention can be made up of the driven disc of clutch, bearing block, the ball screw assembly, that links to each other with clutch driven disk, the subsidiary screw of ball-screw is connected with vanes fixed, and vane drive mechanism is formed by the rotating plate of vane drive motor and clutch.Moving by the vane drive motor of blade drives the ball-screw rotation by clutch, moved by screw pulling blade.The vane drive motor is stepping or servomotor.
Because the very thin thickness of blade, the space layout of the drive mechanism of blade can only be an array on X, the Y direction at two-dimensional directional promptly along spatial arrangements, and the vane drive motor links to each other with Y direction mobile device, and the directions X mobile device links to each other with Y direction mobile device.
Y direction mobile device comprises ball screw assembly,, the guide rail on stepping on the Y direction or servomotor, the gear driving pair that links to each other with this motor, bearing block, the Y direction, and the subsidiary screw of ball-screw links to each other with the vane drive motor.Motor is passed to ball-screw to power by gear drive, will rotatablely move to become the straight-line displacement campaign, makes the Y direction by screw drive vane drive motor along guide rail and moves.
The directions X mobile device comprises ball screw assembly,, the guide rail on stepping on the directions X or servomotor, the gear driving pair that links to each other with this motor, bearing block, the directions X, and the subsidiary screw of ball-screw links to each other with whole Y direction mobile device.Motor is passed to ball-screw to power by gear drive, will rotatablely move to become the straight-line displacement campaign, drives Y direction mobile device by screw and moves as directions X along guide rail, then in Y direction adjusted.
The multi-diaphragm collimator of regulating can be controlled the rotation of X, the stepping of Y direction or servomotor by microcomputer in turn, makes the vane drive motor by X, the motion of Y direction, and CD-ROM drive motor is connected with the blade drive mechanism that needs to regulate.When multiple-blade need be regulated, regulate in turn successively.
Below in conjunction with the embodiment description of drawings:
Fig. 1 is the multi-diaphragm collimator structural representation;
Fig. 2 is a left view for Fig. 1;
Fig. 3 is blade drive mechanism of the present invention and vane drive mechanism structural representation;
Fig. 4 is a directions X mobile device structural representation;
Fig. 5 is a Y direction mobile device structural representation;
Among the figure: ball screw assembly, 21 guide rails on stepping or the servomotor 18 gear driving pairs 19 bearing block 20Y directions on ball screw assembly, 14 bearing block 15X direction steppings or the servomotor 16 gear driving pair 17Y directions on the driven disc 9 bearing blocks 10 ball screw assembly,s 11 blades 12 guide rail 13X directions of rotating plate 8 clutches of 1 blade balladeur train 2 collimator substrates, 3 blade drive mechanisms and the 4Y of vane drive mechanism direction mobile device 5X direction mobile device 6 blade driving motors 7 clutches
Fig. 1 is the simple structure sketch map of multi-diaphragm collimator, blade balladeur train 1, collimator substrate 2, blade 11 constitute the main frame of multi-diaphragm collimator, blade 11 is formation unit of multi-diaphragm collimator, and the end face that stretches to the irradiation field center is a vane end faces, is usually designed to a circular arc.Blade carries out parallel moving along blade balladeur train 1.A among Fig. 1 is its enlarged drawing on its left side.As shown in Figure 3, all be connected with a drive mechanism on each blade 11, driven disc 8, bearing block 9, ball screw assembly, 4 by the cross recess clutch are formed, the subsidiary screw of ball-screw is fixedlyed connected with blade 11, vane drive mechanism is formed by the rotating plate 7 of vane drive motor 1 and clutch, and vane drive motor 1 is stepping or servomotor.Vane drive mechanism is connected with the blade drive mechanism.
As shown in Figure 2, drive mechanism on the blade 11 is two-dimensional space directions X and Y direction array, for this reason, vane drive motor 1 needs Y direction mobile device and directions X mobile device supporting with it, makes the vane drive motor and the blade drive mechanism that needs to regulate is connected.The vane drive motor is to link to each other with Y direction mobile device, and the directions X mobile device links to each other with whole Y direction mobile device.
As Fig. 4, Y direction mobile device comprises ball screw assembly, 20, the guide rail 21 on stepping on the Y direction or servomotor 17, the gear driving pair 18 that links to each other with this motor, bearing block 19, the Y direction.Stepping or servomotor 17 are passed to ball-screw to power by gear drive, will rotatablely move to become the straight-line displacement campaign, make the Y direction by screw drive vane drive motor along guide rail 21 and move.
As Fig. 5, the directions X mobile device comprises ball screw assembly, 13, the guide rail 12 on stepping on the directions X or servomotor 15, the gear driving pair 16 that links to each other with this motor, bearing block 14, the directions X, and stepping or servomotor 17 link to each other on the subsidiary screw of ball-screw and the Y direction.Stepping or servomotor 15 are passed to ball-screw to power by gear drive, will rotatablely move to become the straight-line displacement campaign, drive Y direction mobile device by screw and move as directions X along guide rail 12, then in Y direction adjusted, by as Fig. 4 mode.
A plurality of blades are regulated in turn by vane drive mechanism and Y direction mobile device, directions X mobile device, and one takes turns and finishes, then next round.
Advantage of the present invention:
The a plurality of blades of the present invention only need the mobile device of a cover driving mechanism and this driving mechanism of cover control to finish adjusting, economize Gone blade of prior art to need the drawback of a cover driving mechanism and driver, greatly reduced cost, implemented reliably, Be convenient to the utilization and extention of automatic computer control collimater.
Claims (5)
1, a kind of blade actuating device of multi-diaphragm collimator, it is characterized in that comprising that the blade drive mechanism, the cover blade driving mechanism and that link to each other with each blade overlap the mobile device that links to each other with the vane drive motor of this vane drive mechanism, vane drive mechanism cooperates with the blade drive mechanism.
2, the blade actuating device of multi-diaphragm collimator according to claim 1, it is characterized in that the described blade drive mechanism that links to each other with each blade is made up of driven disc (8), bearing block (9), the ball screw assembly, (10) of clutch, the subsidiary screw of ball-screw is fixedlyed connected with blade (11), and vane drive mechanism is formed by the rotating plate (7) of vane drive motor (6) and clutch.
3, the blade actuating device of multi-diaphragm collimator according to claim 1, the drive mechanism that it is characterized in that blade is an array on X, the Y direction at two-dimensional directional, vane drive motor (6) links to each other with Y direction mobile device (4), and directions X mobile device (5) links to each other with Y direction mobile device.
4, the blade actuating device of multi-diaphragm collimator according to claim 3, it is characterized in that Y direction mobile device comprises ball screw assembly, (20), the guide rail (21) on stepping on the Y direction or servomotor (17), the gear driving pair (18) that links to each other with this motor, bearing block (19), the Y direction, the subsidiary screw of ball-screw links to each other with vane drive motor (6).
5, the blade actuating device of multi-diaphragm collimator according to claim 3, it is characterized in that the directions X mobile device comprises ball screw assembly, (13), the guide rail (12) on stepping on the directions X or servomotor (15), the gear driving pair (16) that links to each other with this motor, bearing block (14), the directions X, the subsidiary screw of ball-screw links to each other with Y direction mobile device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110209A CN1158112C (en) | 2000-04-25 | 2000-04-25 | Blade driver of multi-blade collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001110209A CN1158112C (en) | 2000-04-25 | 2000-04-25 | Blade driver of multi-blade collimator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1320466A true CN1320466A (en) | 2001-11-07 |
| CN1158112C CN1158112C (en) | 2004-07-21 |
Family
ID=4580963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001110209A Expired - Fee Related CN1158112C (en) | 2000-04-25 | 2000-04-25 | Blade driver of multi-blade collimator |
Country Status (1)
| Country | Link |
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| CN (1) | CN1158112C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117051B (en) * | 2009-12-31 | 2013-04-24 | 深圳市海博科技有限公司 | Multi-leaf collimator control system |
| CN103489497A (en) * | 2013-09-17 | 2014-01-01 | 沈阳东软医疗系统有限公司 | Drive system |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8384049B1 (en) * | 2012-04-25 | 2013-02-26 | Elekta Ab (Publ) | Radiotherapy apparatus and a multi-leaf collimator therefor |
-
2000
- 2000-04-25 CN CNB001110209A patent/CN1158112C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102117051B (en) * | 2009-12-31 | 2013-04-24 | 深圳市海博科技有限公司 | Multi-leaf collimator control system |
| CN103489497A (en) * | 2013-09-17 | 2014-01-01 | 沈阳东软医疗系统有限公司 | Drive system |
| CN103489497B (en) * | 2013-09-17 | 2016-03-30 | 沈阳东软医疗系统有限公司 | A kind of drive system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1158112C (en) | 2004-07-21 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040721 Termination date: 20120425 |