CN2235833Y - Shape-changeable X-knife collimator - Google Patents
Shape-changeable X-knife collimator Download PDFInfo
- Publication number
- CN2235833Y CN2235833Y CN 95231377 CN95231377U CN2235833Y CN 2235833 Y CN2235833 Y CN 2235833Y CN 95231377 CN95231377 CN 95231377 CN 95231377 U CN95231377 U CN 95231377U CN 2235833 Y CN2235833 Y CN 2235833Y
- Authority
- CN
- China
- Prior art keywords
- collimator
- stop
- active block
- motor
- collimator apparatus
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to a medical accelerator or a device used on a cobalt-60 therapeutic machine, particularly relates to a shape-changeable X-knife collimator, and mainly comprises a movable block, a fixed block, a rotary disc and a machine base. The position of the movable block and the rotary disc can do real-time variation in the course of irradiating through the controlling of a computer and according to the projective size and angle of a target zone in various directions, a spherical target zone and a majority of non-spherical target zone all can gain the dose distribution of uniform target zone, and the application scope of the X-knife can be enlarged.
Description
This utility model belongs to a kind of device of using on medical accelerator or the cobalt-60 therapy machine, particularly relates to a kind of X-cutter collimator of shape-variable.
X-cutter collimator apparatus shape in irradiation of using is immutable at present, and the beam cross section that passes through is the constant circle of diameter.So just cause this device to be mainly used in the spherical target area of irradiation.Aspheric target area is needed repeatedly focusing (waiting the center), and can not obtain uniform target dose distribution.Range of application also mainly is confined to the treatment of the part cerebral tumor.
At problem set forth above, this utility model provides a kind of device, and it can change launched field size and angle in real time in irradiation, is applicable to spherical target area and most of non-spherical target areas.Can obtain uniform target dose distributes.Other position that simultaneously can expand the range of application of X-cutter to health.
This utility model is achieved through the following technical solutions:
It includes collimator and pedestal 8, and collimator is to be made of four blocks, and wherein active block stop 1,2 are clipped between the fixed stop 3,4 motor 20,21 with bevel gear 27, gear 17,18 is connected with tooth bar 28, tooth bar 28 and active block stop 1,2 connect, driving active block stop 1,2 moves between fixed stop 3,4.Fixed stop 3,4 is connected on the rotating disk 7 by upper beam 5,6, and the motor 19 that is installed on the pedestal 8 is connected with rotating disk 7, and the opposite face of active block stop 1,2 is provided with semi-circular groove 29.
The utility model has the advantages that the size and the angle that can in irradiation, change launched field in real time.So no matter to still most ofs non-spherical target areas, spherical target area, when treatment, shine in any direction, launched field is met with the target area well.Center modes such as it is many that the target dose distributing homogeneity is better than obviously that present X-cutter collimator adopts.Make the matching degree of high dose area and target area better, and do not need repeatedly focusing (waiting the center).Enlarged the range of application of X-cutter.
This utility model is specifically described by embodiment below in conjunction with accompanying drawing.Accompanying drawing one is an external structure of the present utility model.Accompanying drawing two is a cut-away view of the present utility model.Accompanying drawing three is an A-A profile of the present utility model.Accompanying drawing four is rotating disk of the present utility model and base construction sketch map.Accompanying drawing five is a controlling party block diagram of the present utility model.
This utility model mainly is by four blocks, rotating disk, pedestal, compositions such as motor and some actuating devices.Wherein active block stop 1,2 is clipped between the fixed stop 3,4, motor 20,21 and bevel gear or worm screw 27, and gear 17,18 is connected with tooth bar 28, and tooth bar 28 connects with active block stop 1,2, drives active block stop 1,2 and moves between fixed stop 3,4.Be provided with axle 9,10,11,12,13,14 and 1,2 position-limiting action of 25,26 pairs of active block stops of capacity eccentric bearing at fixed stop 3,4.Be provided with connecting axle 15,16 and groups of springs 23,24 support fixation blocks 3 and 4 at fixed stop 3,4.Fixed stop 3,4th 5,6 is connected on the rotating disk 7 by putting the beams in place, and the motor 19 that is installed on the pedestal 8 is connected with rotating disk 7, and this just can change the launched field angle.Opposite face at active block stop 1,2 is provided with semicircle or half elliptic groove 29.A position sensor 22 respectively is installed on the fixed stop 3,4, and eccentric shaft 30 structures are adopted in the connecting bolt hole that is located on the pedestal 8, are the positioning accuracies of being convenient to adjust this device.The motor that this utility model adopts is a motor.
Active block stop 1,2 has the some right of different-thickness, can select according to different patients' needs.
Use computer-chronograph to compare the size of target area according to the data of position sensor 22, bearing data comes drive motors 20,21, the position of 19 control active block stops 1,2 and rotating disk 7.
Claims (7)
1. the X-cutter collimator apparatus of a shape-variable, it includes collimator and pedestal (8), it is characterized in that: collimator is to be made of four blocks, active block stop (1) wherein, (2) be clipped in fixed stop (3), between (4), motor (20), (21) with bevel gear (27), gear (17), (18) are connected with tooth bar (28), tooth bar (28) and active block stop (1), (2) connect, drive active block stop (1), move between (4) in fixed stop (3) (2), fixed stop (3), (4) by putting the beams in place (5), (6) are connected on the rotating disk (7), and the motor (19) that is installed on the pedestal (8) is connected with rotating disk (7), active block stop (1), the opposite face of (2) are provided with semi-circular groove (29).
2. collimator apparatus according to claim 1 is characterized in that active block stop (1), and (2) are by axle (9), (10), and (11), (12), (13), (14), and capacity eccentric bearing (25), (26) are spacing in fixed stop (3), in (4).
3. collimator apparatus according to claim 1 is characterized in that fixed stop (3), and (4) are provided with connecting axle (15), (16) and groups of springs (23), (24) support fixation block (3) and (4).
4. collimator apparatus according to claim 1, the connecting bolt hole that it is characterized in that being located on the pedestal (8) is eccentric shaft (30).
5. collimator apparatus according to claim 1 is characterized in that active block stop (1), and (2) have the some right of different-thickness.
6. collimator apparatus according to claim 1 is characterized in that groove (29) also can be half elliptic.
7. collimator apparatus according to claim 1 is characterized in that motor (19), and (20), (21) are motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95231377 CN2235833Y (en) | 1995-06-12 | 1995-06-12 | Shape-changeable X-knife collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 95231377 CN2235833Y (en) | 1995-06-12 | 1995-06-12 | Shape-changeable X-knife collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2235833Y true CN2235833Y (en) | 1996-09-25 |
Family
ID=33875993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 95231377 Expired - Fee Related CN2235833Y (en) | 1995-06-12 | 1995-06-12 | Shape-changeable X-knife collimator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2235833Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458563C (en) * | 2003-11-20 | 2009-02-04 | Ge医疗系统环球技术有限公司 | Collimator, x-raying apparatus and x-ray photographing device |
-
1995
- 1995-06-12 CN CN 95231377 patent/CN2235833Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100458563C (en) * | 2003-11-20 | 2009-02-04 | Ge医疗系统环球技术有限公司 | Collimator, x-raying apparatus and x-ray photographing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |