CN203799683U - Novel multi-blade collimator - Google Patents
Novel multi-blade collimator Download PDFInfo
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- CN203799683U CN203799683U CN201420024529.2U CN201420024529U CN203799683U CN 203799683 U CN203799683 U CN 203799683U CN 201420024529 U CN201420024529 U CN 201420024529U CN 203799683 U CN203799683 U CN 203799683U
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Abstract
The utility model relates to a novel multi-blade collimator comprising a foundation plate, a blade box guiding and driving mechanism, blade boxes, a control system and blade position detection feedback systems, wherein the blade box guiding and driving mechanism and the control system are mounted on the foundation plate, two mutually independent blade boxes are mounted on the blade box guiding and driving mechanism, and the blade position detection feedback systems are respectively mounted on the blade boxes. After the above technical solution is adopted, because a blade group is combination of a plurality kinds of blades different in thickness, protection over normal tissues can be improved through improved contour resolution, precise radiotherapy for middle and small radiation fields can be realized and normal radiotherapy for large radiation fields can also be realized. Because the blade position detection feedback systems described in the utility model are adopted, blade positions can be monitored at any time, accumulative errors are eliminated, and blade motion precision is improved; security and reliability of a whole machine as well as radiotherapy precision are further improved.
Description
Technical field
The utility model relates to the multi-diaphragm collimator of radiation therapy and other industrial radiation bundles.
Prior art
In current radiotherapy field, multi-diaphragm collimator (MLC) is widely used in radiation therapy, comprises intensity modulated therapy and conformal therapy.The target that medical circle is pursued is always to reduce to greatest extent the injury of normal tissue, strengthens as much as possible the accurate radiotherapy of the dosage of focus target area.The built-in multi-diaphragm collimator of current radiation device is commonly single vane thickness and mostly is two kinds of vane thicknesses most, and vane thickness is generally partially thick, causes the resolution of outline line comparatively coarse, and radiotherapy precision is not high, and normal tissue causes infringement to a certain degree.If yet all adopt the blade of little thickness, guaranteeing under the prerequisite that total launched field is constant, must increase the quantity of blade and motor, this becomes comparatively complicated by the structure that makes multi-diaphragm collimator, the reliability of equipment reduces, manufacture and maintenance cost rising, final user is difficult to accept, and equipment can not get promoting.For addressing this problem, part medical institutions adopt standard multi-diaphragm collimator auxiliary with micro-collimator, rely on the micro-collimator of slim vane to improve the way of radiotherapy precision, but while running into larger launched field, need to pull down again micro-collimator (because miniature multi-diaphragm collimator launched field is generally less); But this way has obviously increased medical worker's working strength, because micro-collimator will frequently be installed and removed, radiotherapy apparatus utilization ratio reduces, and treatment space such as dwindles at the series of problems.The another one factor that affects radiotherapy precision is leaf position detection feedback system, and current leaf position detects and generally uses rotary encoder, infers the position of blade by detecting the angular displacement of drive motor axle.Rectilinear motion from the blade that rotatablely moves of motor, to pass through gear reduction box, a plurality of intermediate links such as feed screw nut's throw-over gear, too much median error causes the physical location of blade to be difficult to detect exactly, more seriously, if reducer casing or feed screw nut's throw-over gear damage or other reasons cause motor idle running and blade stop motion, existing detection system may be difficult to find, now system shows that blade is in motion, but in fact not motion of blade, this will cause serious security incident.
Summary of the invention
To be solved in the utility model is that the too low and leaf position of existing multi-diaphragm collimator profile resolution can not direct-detection and the technical matters of feedback.
In order to solve above technical matters, the technical scheme that the utility model is taked is:
A novel multi-diaphragm collimator, it comprises foundation plate, blade case guiding and driving mechanism, blade case, control system, leaf position detection feedback system; Blade case guiding and driving mechanism and control system are installed on foundation plate; On blade case guiding and driving mechanism, two separate blade casees are installed; On each blade case, leaf position detection feedback system is all installed.
Described blade case comprises blade driving motor group, bearing plate, bearing baffle, blade casing, the mechanisms such as vane group.
The blade that described vane group comprises multiple different-thickness.
The position of each blade in described vane group is detected in real time by leaf position detection feedback system.
Described leaf position detection feedback system comprises touch screens, sliding bar, spring.
After having adopted technique scheme, for the launched field higher feature of low profile resolution requirement more, the blade of the less thickness of little launched field utilization, slightly large launched field utilizes the blade of intermediate gauge, and large launched field utilizes the blade of normal thickness, uses flexibly, easy and simple to handle.Due to the raising of profile resolution, the protection of normal tissue is promoted.Simultaneously due to the leaf position detection feedback system described in employing this patent, the sliding bar being arranged on blade moves with blade with spring, the displacement of sliding bar on resistance (electric capacity) screen converts electric signal to and is transferred to control system, monitor at any time accordingly the position of blade, cancelled cumulative errors, improved the kinematic accuracy of blade, the security of complete machine, reliability and radiotherapy precision are promoted.
Accompanying drawing explanation
Fig. 1 is perspective view of the present utility model.
Fig. 2 is explosive view of the present utility model.
Fig. 3 is the explosive view of blade case.
Fig. 4 is vane thickness distribution plan.
Fig. 5 is leaf position detection feedback system schematic diagram.
Fig. 6 is the explosive view of leaf position detection feedback system.
Embodiment
As depicted in figs. 1 and 2, a kind of novel multi-diaphragm collimator, it comprises foundation plate, blade case guiding and driving mechanism, blade case, control system, leaf position detection feedback system; Blade case guiding and driving mechanism and control system are installed on foundation plate; On blade case guiding and driving mechanism, two separate blade casees are installed; On each blade case, leaf position detection feedback system is all installed.
As shown in Figure 3, described blade case comprises blade driving motor group, bearing plate, bearing baffle, blade casing, the mechanisms such as vane group.
As shown in Figure 4, the blade that described vane group comprises multiple different-thickness.
As shown in Figure 5, the position of each blade in described vane group is detected in real time by leaf position detection feedback system.
As shown in Figure 6, described leaf position detection feedback system comprises touch screens, sliding bar, spring.
The implication respectively identifying in figure is: 1 is that foundation plate, 2 is that blade case guiding and driving mechanism, 3 are that blade case, 4 is that leaf position detection feedback system, 5 is that control system, 6 is that blade driving motor group, 7 is bearing plate, 8 bearing baffles, 9 blade casings, 10 vane group, 11 touch screens, 12 sliding bars, 13 springs.
Claims (5)
1. a novel multi-diaphragm collimator, is characterized in that, it comprises foundation plate, blade case guiding and driving mechanism, blade case, control system, leaf position detection feedback system; Blade case guiding and driving mechanism and control system are installed on foundation plate; On blade case guiding and driving mechanism, two separate blade casees are installed; On each blade case, leaf position detection feedback system is all installed.
2. a kind of novel multi-diaphragm collimator as claimed in claim 1, is characterized in that, described blade case comprises blade driving motor group, bearing plate, bearing baffle, blade casing, vane group.
3. a kind of novel multi-diaphragm collimator as claimed in claim 1, is characterized in that, described vane group comprises the blade of multiple different-thickness.
4. a kind of novel multi-diaphragm collimator as claimed in claim 1, is characterized in that, the position of each blade in described vane group is detected in real time by leaf position detection feedback system.
5. a kind of novel multi-diaphragm collimator as claimed in claim 1, is characterized in that, described leaf position detection feedback system comprises touch screens, sliding bar, spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024529.2U CN203799683U (en) | 2014-01-15 | 2014-01-15 | Novel multi-blade collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420024529.2U CN203799683U (en) | 2014-01-15 | 2014-01-15 | Novel multi-blade collimator |
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| Publication Number | Publication Date |
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| CN203799683U true CN203799683U (en) | 2014-08-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420024529.2U Expired - Fee Related CN203799683U (en) | 2014-01-15 | 2014-01-15 | Novel multi-blade collimator |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104771838A (en) * | 2015-04-09 | 2015-07-15 | 清华大学 | Multi-leaf collimator for tumor radiotherapy and tumor radiotherapy apparatus |
| CN105022413A (en) * | 2015-08-20 | 2015-11-04 | 成都伊贝基科技有限公司 | Electric multi-leaf grating encoder closed-loop control system |
| CN105703526A (en) * | 2016-03-14 | 2016-06-22 | 清华大学 | Circuit board-based multi-leaf collimator motor lead fixing structure |
| CN104147712B (en) * | 2014-08-28 | 2017-01-04 | 山东交通学院 | A kind of multi-diaphragm collimator blade displacement error detecting apparatus |
| CN106964079A (en) * | 2017-04-11 | 2017-07-21 | 宋继福 | It is a kind of to be used for the leafy collimator apparatus of tomography radiotherapy and dynamic intensity-modulated radiation therapy |
| CN107929955A (en) * | 2017-11-24 | 2018-04-20 | 沈阳东软医疗系统有限公司 | Radiotherapy apparatus, multi-leaf optical grating and its blade construction |
| CN109513116A (en) * | 2017-09-18 | 2019-03-26 | 胡逸民 | A kind of ray intensity modulated therapy device |
| WO2019136763A1 (en) * | 2018-01-15 | 2019-07-18 | 西安大医集团有限公司 | Multi-leaf collimator and radiation treatment head |
| CN115300810A (en) * | 2022-08-05 | 2022-11-08 | 中科超精(南京)科技有限公司 | Multi-blade collimator device capable of driving reinforcing blades to move rapidly |
-
2014
- 2014-01-15 CN CN201420024529.2U patent/CN203799683U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104147712B (en) * | 2014-08-28 | 2017-01-04 | 山东交通学院 | A kind of multi-diaphragm collimator blade displacement error detecting apparatus |
| CN104771838A (en) * | 2015-04-09 | 2015-07-15 | 清华大学 | Multi-leaf collimator for tumor radiotherapy and tumor radiotherapy apparatus |
| CN105022413A (en) * | 2015-08-20 | 2015-11-04 | 成都伊贝基科技有限公司 | Electric multi-leaf grating encoder closed-loop control system |
| CN105022413B (en) * | 2015-08-20 | 2018-04-10 | 成都伊贝基科技有限公司 | Electric multiblade optical grating encoder closed-loop control system |
| CN105703526A (en) * | 2016-03-14 | 2016-06-22 | 清华大学 | Circuit board-based multi-leaf collimator motor lead fixing structure |
| CN106964079A (en) * | 2017-04-11 | 2017-07-21 | 宋继福 | It is a kind of to be used for the leafy collimator apparatus of tomography radiotherapy and dynamic intensity-modulated radiation therapy |
| CN109513116A (en) * | 2017-09-18 | 2019-03-26 | 胡逸民 | A kind of ray intensity modulated therapy device |
| CN107929955A (en) * | 2017-11-24 | 2018-04-20 | 沈阳东软医疗系统有限公司 | Radiotherapy apparatus, multi-leaf optical grating and its blade construction |
| WO2019136763A1 (en) * | 2018-01-15 | 2019-07-18 | 西安大医集团有限公司 | Multi-leaf collimator and radiation treatment head |
| CN115300810A (en) * | 2022-08-05 | 2022-11-08 | 中科超精(南京)科技有限公司 | Multi-blade collimator device capable of driving reinforcing blades to move rapidly |
| CN115300810B (en) * | 2022-08-05 | 2024-02-09 | 中科超精(南京)科技有限公司 | Driving enhancement blade fast moving multi-leaf collimator device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140827 Termination date: 20210115 |