CN2213545Y - Collimator of changable ray beam diameter - Google Patents
Collimator of changable ray beam diameter Download PDFInfo
- Publication number
- CN2213545Y CN2213545Y CN 94247384 CN94247384U CN2213545Y CN 2213545 Y CN2213545 Y CN 2213545Y CN 94247384 CN94247384 CN 94247384 CN 94247384 U CN94247384 U CN 94247384U CN 2213545 Y CN2213545 Y CN 2213545Y
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- CN
- China
- Prior art keywords
- collimator
- cylinder
- ray
- support frame
- beam diameter
- 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 provides a collimator for medical cubic fixed-direction radiation curing equipment. A plurality of eccentric collimating holes with different hole diameters are arranged on the cylinder body of the collimator, the rotating angle of the cylinder body of the collimator is changed by a graduation drive mechanism, the collimating holes with different diameters are abutted with the ray tunnel, and the change of the ray beam diameter is realized. The utility model has the advantages of simple structure, practicality, reliability and easy realization of the automatic control, the collimator has no need to change manually in the treating progress, and the problems of sick part reposition and safety protection caused by the manual change of the collimator are avoided.
Description
This utility model belongs to a kind of collimator apparatus of the collimator that is used for the lonizing radiation passage, particularly medical stereo directional radiative therapeutic equipment.
Medical stereo directional radiotherapy apparatus need install collimator additional to improve beam behaviour at the port of export of radioactive source.Existing collimator is generally one group of single aperture axle center collimator to be formed, and has tactic different aperture, and according to the size of lesion tissue, the collimator of the respective aperture that change the outfit is to reach the purpose of conformal radiation therapy during use.Under the complex-shaped situation of focus, often need the collimator that repeatedly manually changes the outfit in the therapeutic process, could guarantee therapeutic effect, not only operate cumbersomely, also bring the location and the problem of security protection aspect.
The purpose of this utility model is that a kind of collimator with multiple aperture will be provided, can automatically conversion collimator aperture in therapeutic process, adjust the size of ray beam diameter, and can realize the switch motion of ray channel.
Task of the present utility model is achieved in that the collimator of changing ray beam diameter is installed in the port of export of radioactive source ray channel, the collimator cylinder that has collimating aperture is offset to ray channel and installs, an eccentric throw is arranged between collimator column axis and ray channel axis, on the collimator cylinder, be radial circumference with this eccentric throw, distributed the eccentric shaft in some different apertures to collimating aperture, the collimator cylinder links with an indexing and driving mechanism again, and the collimator cylinder can be located around its axis calibration revolution.When selecting a certain aperture collimating aperture according to treatment planning, under the effect of drive mechanism, the rotation of collimator cylinder makes this collimating aperture dock with the radioactive source ray channel, and lonizing radiation penetrate along this collimating aperture; When selecting other aperture collimating aperture, the collimator cylinder can turn round the collimating aperture that makes selection again and dock with ray channel, so just can be in therapeutic process the conversion ray beam diameter.The collimator barrel swivel is docked with ray channel with body part in fact, play the effect that stops lonizing radiation, closes ray channel.
This utility model is installed the collimator eccentric throw, replaces existing single aperture axle center collimator and attached drive mechanism with the eccentric collimator of multiple aperture, and is simple in structure, practical, reliable, provides great convenience to use.Can be at any time in therapeutic process the aperture of conversion collimator as required, realize computer controlled automatic easily, saved the non-treatment operating time, and the focus of having avoided artificial replacing collimator to be brought relocates the problem with the security protection aspect.
Concrete structure of the present utility model is provided by embodiment and accompanying drawing thereof.
Fig. 1 is the section of structure of this utility model embodiment.
With reference to Fig. 1, radioactive source (2) and ray channel (4) thereof are installed in the source body support frame (1) made from shielding material, collimator cylinder (7) is positioned at the port of export of ray channel (4), and centre of sphere supporting (5) and bearing (8) by its two ends also are installed in the source body support frame (1).Collimator cylinder (7) is selected lonizing radiation shielding material and the eccentric installation of source body support frame (1) for use, ray channel (4) has an eccentric throw (3) with the axis of collimator cylinder (7), with this eccentric throw (3) is radius, and calibration has been arranged the collimating aperture (6) of some different-diameters on the collimator cylinder.Leave enough screening ranges between each collimating aperture and between collimating aperture and collimator cylinder (7) outer wall, guaranteeing shield effectiveness, the length of collimator cylinder (7) also should be taken into account the shield effectiveness of ray except that satisfying the collimation of collimating aperture to ray require.Present embodiment relies on centre of sphere supporting (5) and bearing (8) to guarantee the flexible rotation of collimator cylinder (7) in source body support frame (1).Centre of sphere supporting (5) plays location and axis of rotation, adopt high-abrasive material, also there is corresponding Wear-resistant Treatment at the source body support frame (1) that connects with it and the position of collimator cylinder (7), the producing balanced forces when bearing (8) selects for use self-aligning ball bearing to guarantee its installation accuracy and transmission.When mounted, also should leave enough gaps between collimator cylinder (7) and the source body support frame (1), cylinder (7) can be turned round freely.To drive mechanism require not only reliably transmission also requirement accurately calibration locate, accurately dock with ray channel (4) with assurance collimating aperture (6).Present embodiment adopts worm-drive, motor Driven by Coaxial to guarantee transmission and localized reliability.Motor (11) is contained on the source body support frame (1), and worm screw (10) is sleeved on the end of collimator cylinder (7) with coaxial connection of motor (11), worm gear (9).Motor (11) is a reaction stepping motor, can directly change electric impulse signal into corner, cooperates the lock-bit of the big speed ratio realization collimator cylinder (7) of cylindrical worm gearing transmission.The collimating aperture of present embodiment (6) selects 2,4,6,8,10,12,15,20,8 grades, and per 45 ° is a calibration action.
Claims (3)
1, a kind of collimator of changing ray beam diameter, be positioned at the port of export of radioactive source (2) and ray channel (4), has a collimator cylinder (7) that has axial collimating aperture (6), it is characterized in that the axis of collimator cylinder (7) and the axis of ray channel (4) have an eccentric throw (3), distributed the eccentric shaft in some different apertures to collimating aperture (7) in cylinder (7) upper edge eccentric throw (3) for radial circumference, collimator cylinder (7) also connects with an indexing and driving mechanism, can be along its axis calibration revolution location.
2, collimator according to claim 1, it is characterized in that having the source body support frame (1) of an installation radioactive source (2) and ray channel (4), collimator cylinder (7) is installed in the source body support frame (1) by the centre of sphere supporting (5) and the bearing (8) at its two ends.
3, collimator according to claim 2 is characterized in that in the end of collimator cylinder (7) worm gear (9) being housed, the worm screw that is engaged with (10) be installed in source body support frame (1) on coaxial connection of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247384 CN2213545Y (en) | 1994-12-19 | 1994-12-19 | Collimator of changable ray beam diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94247384 CN2213545Y (en) | 1994-12-19 | 1994-12-19 | Collimator of changable ray beam diameter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2213545Y true CN2213545Y (en) | 1995-11-29 |
Family
ID=33852623
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94247384 Expired - Fee Related CN2213545Y (en) | 1994-12-19 | 1994-12-19 | Collimator of changable ray beam diameter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2213545Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195058B (en) * | 2007-11-27 | 2010-05-26 | 深圳市海博科技有限公司 | Multi-collimating body radiation therapy device |
| CN105551559A (en) * | 2016-02-16 | 2016-05-04 | 苏州爱因智能设备有限公司 | Projecting-range-adjustable collimator |
| WO2017219291A1 (en) * | 2016-06-22 | 2017-12-28 | 深圳市奥沃医学新技术发展有限公司 | Collimator, therapeutic head and radiotherapy apparatus |
| CN114452549A (en) * | 2022-01-17 | 2022-05-10 | 江苏瑞尔医疗科技有限公司 | Collimation system capable of realizing automatic and quick switching |
-
1994
- 1994-12-19 CN CN 94247384 patent/CN2213545Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101195058B (en) * | 2007-11-27 | 2010-05-26 | 深圳市海博科技有限公司 | Multi-collimating body radiation therapy device |
| CN105551559A (en) * | 2016-02-16 | 2016-05-04 | 苏州爱因智能设备有限公司 | Projecting-range-adjustable collimator |
| WO2017219291A1 (en) * | 2016-06-22 | 2017-12-28 | 深圳市奥沃医学新技术发展有限公司 | Collimator, therapeutic head and radiotherapy apparatus |
| CN114452549A (en) * | 2022-01-17 | 2022-05-10 | 江苏瑞尔医疗科技有限公司 | Collimation system capable of realizing automatic and quick switching |
| CN114452549B (en) * | 2022-01-17 | 2023-01-24 | 江苏瑞尔医疗科技有限公司 | Collimation system capable of realizing automatic and quick switching |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C53 | Correction of patent for invention or patent application | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: PATENTEE ADDRESS; FROM: ROOM 1701-3, GUOMAO BUILDING, SHENZHEN CITY, 518014 TO: SHENZHENAOWOGUOJIKEJIFAZHANYOUXIAN COMPANY, ROOM 2202, DIANZIKEJI BUILDING, NO. 30, SHENNANZHONG ROAD, SHENZHEN CITY, 518031 |
|
| CP03 | Change of name, title or address |
Address after: Electronic Science and technology building, No. 30 Shenzhen 518031 Shennan Road, room 2202, Shenzhen Aowo International Science & Technology Development Co Ltd Patentee after: Song Shipeng Address before: 518014 room 1701-3, International Trade Building or Cetra Building, Shenzhen Patentee before: Song Shipeng |
|
| 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 |