CN205084239U - Concave -convex blade and have multi leaf collimator structure of this blade - Google Patents
Concave -convex blade and have multi leaf collimator structure of this blade Download PDFInfo
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- CN205084239U CN205084239U CN201520898842.3U CN201520898842U CN205084239U CN 205084239 U CN205084239 U CN 205084239U CN 201520898842 U CN201520898842 U CN 201520898842U CN 205084239 U CN205084239 U CN 205084239U
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Abstract
The utility model discloses a concave -convex blade and have multi leaf collimator structure of this blade, including the blade and the actuating mechanism of connection on the blade that overlaps each other, actuating mechanism include drive arrangement, lead screw and nut, the both ends of lead screw connect respectively on drive arrangement and nut, the blade on be provided with the convex curved surface and with the convex curved surface assorted spill curved surface of adjacent blade, the convex curved surface on be provided with the counter bore that is used for fixation nut and the lead screw hole that is used for adapting to the lead screw, solve to lead screw and the very little problem of nut diameter requirement when the blade is very thin among the prior art.
Description
Technical field
This utility model relates to tumour radiotherapy apparatus field, refers to particularly a kind ofly to implement the multi-leaf optical grating of three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) tumor and the blade construction of this multi-leaf optical grating.
Background technology
Electric multiblade optical grating, as the visual plant for three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) tumor, is at home and abroad widely applied.Multi-leaf optical grating is made up of symmetrical left and right vane group, and blade adopts the heavy metal tungsten alloy material manufacture that can produce stronger barrier effect to lonizing radiation.When multi-leaf optical grating is in closure state, it can effectively stop lonizing radiation to pass through, in working order, can the lonizing radiation of outgoing be limited in certain scope, namely the dynamic wedge of radiotherapy is realized by the motion of multi-leaf optical grating Leaf wild, and by controlling the time of staying of blade on each position, reach the radiation metering distribution required arbitrarily.Compare with traditional radiation therapy technology, use the three-dimensional conformal Intensity Modulation Radiated Therapy (IMRT) of multi-leaf optical grating while effectively killing tumor, the peripheral normal structure of tumor can be protected to greatest extent, effectively improve the treatment ratio of gains.
For improving conformal degree, requiring that the blade of grating does as much as possible thin, is the needs that satisfied tune is strong, and every blade must be equipped with independently a set of driving mechanism, as screw mandrel, and nut, motor etc.Because blade is very thin, screw mandrel and nut can only do very thin, but very thin screw mandrel and nut manufacture very difficult, simultaneously because the diameter of screw mandrel is too little, the rigid phase of screw mandrel is on duty, and the reliability of complete machine is lower.
Utility model content
The multi-leaf optical grating structure being a kind of concave-convex blade to be provided and there is this blade of the present utility model, with solve prior art Leaf very thin time to screw mandrel and the very little problem of nut diametric requirements.
The technical scheme in the invention for solving the above technical problem is:
A multi-leaf optical grating structure for concave-convex blade, comprises blade, and blade arranges convex surface and concave curvatures, and one end of described convex surface is provided with counterbore and screw hole.For fixedly mounting nut, between nut and blade, there is not relative motion in counterbore.One end of screw mandrel is connected with motor, the other end and nut screw connection.Because blade both sides are provided with clamping device, electric machine rotation drives screw mandrel to rotate, and band moving vane and nut entirety realize rectilinear motion.Because convex surface increases the volume arranging counterbore and screw hole, make to reduce the requirement of screw mandrel and nut, the diameter of screw mandrel and nut can increase accordingly, reduces manufacture difficulty; And due to the corresponding increase of diameter of screw mandrel, improve the rigidity of screw mandrel, the reliability of corresponding complete machine also improves.Blade overlaps formation vane group, the spacing increase be arranged so that between adjacent two blades of convex surface, blade arranges concave curvatures, when adjacent two blades are overlapping, fit tightly with this concave curvatures in the concave curvatures of convex surface embedding adjacent blades, ensure that lonizing radiation do not pass from the adjacent blades gap of vane group.Adopt the blade of this structure, which obviate lonizing radiation and do not pass from the adjacent blades gap of vane group, reduce the manufacturing cost of difficulty of processing and equipment.
As preferably, in order to improve the stability of blade, described convex surface is symmetricly set on the two sides of blade.Convex surface becomes to be symmetrical arranged with blade, the stability of blade construction is strengthened, can improve the stability of blade movement.
The stability of further raising blade movement, makes counterbore, screw hole and convex surface concentric.Counterbore, screw hole and convex surface concentric, make screw mandrel when being with moving vane to move, blade movement stationarity is good.
A kind of multi-leaf optical grating structure of concave-convex blade, comprise overlapped blade and be connected to the driving mechanism on blade, described driving mechanism comprises driving device, screw mandrel and nut, the two ends of described screw mandrel are connected on driving device and nut, the concave curvatures described blade being provided with convex surface and matching with the convex surface of adjacent blades, described convex surface is provided with for the counterbore of hold-down nut and the screw hole for adapting to screw mandrel.
As the optimal way of such scheme, described convex surface is symmetricly set on the two sides of blade.
As the optimal way of such scheme, described counterbore, screw hole and convex surface concentric.
To sum up, the beneficial effects of the utility model are:
The blade of 1, the technical solution of the utility model is provided with convex surface, the volume of the counterbore of mounting nuts, screw mandrel, screw hole is increased, to the corresponding reduction of requirement of screw mandrel and nut, the diameter of screw mandrel and nut can increase accordingly, reduce the manufacture difficulty of screw mandrel and nut, the corresponding increase of diameter due to screw mandrel, improves the rigidity of screw mandrel, the reliability also corresponding raising of complete machine.
2, the blade of the technical solution of the utility model is provided with concave curvatures, for placing the convex surface of adjacent blades, making do not have a gap between connected two blades, the leakage of lonizing radiation can not be caused to penetrate.
Accompanying drawing explanation
Fig. 1 is the structural representation of concave-convex blade.
Fig. 2 is the side view of concave-convex blade.
Fig. 3 is the structural representation of blade when stacking.
Fig. 4 is the assembly drawing of a blade and driving mechanism.
Fig. 5 is the structural representation of multi-leaf optical grating of the present utility model.
Labelling and corresponding parts title in accompanying drawing: 1, blade; 11, convex surface; 111, counterbore; 112, screw hole; 12, concave curvatures; 21, driving device; 22, screw mandrel; 23, nut.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, be clearly and completely described the technical scheme in this utility model embodiment, obviously, described embodiment is only this utility model part embodiment, instead of whole embodiments.Based on the embodiment in this utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of this utility model protection.
Embodiment 1:
A kind of concave-convex blade as shown in Figure 1 to Figure 3, comprises blade 1, blade 1 is provided with convex surface 11 and concave curvatures 12, and one end of described convex surface 11 is provided with counterbore 111 and screw hole 112.The position that the position of convex surface 11 is arranged by the motor used is determined, its size is determined with screw mandrel 22 size selected jointly according to the thickness of multi-leaf optical grating design Leaf 1.The position that the position of concave curvatures is arranged by adjacent blades motor is determined, the thickness that its size designs Leaf 1 by multi-leaf optical grating and screw mandrel 22 size selected are determined jointly, and it does not reduce the integral rigidity of blade 1 in a thickness direction.Convex surface becomes arranged in parallel with concave curvatures; namely do not interfere; therefore convex surface and the concave curvatures Perfect Matchings of the adjacent many group blades combined can be made; namely convex surface and concave curvatures form the very little laminating in gap; so both can not produce extra friction resistance when blade moves linearly; affect blade travelling performance; and from directions of rays; a gap is not had between adjacent two blades; the leakage of lonizing radiation can not be caused to penetrate; protect the peripheral normal structure of tumor to greatest extent, effectively improve the treatment ratio of gains.Counterbore and screw hole are set at convex surface, effectively can increase the thickness of blade at this place and intensity, make counterbore and screw hole than arranging larger during slim vane simultaneously, therefore when same vane thickness, nut and the screw mandrel of more large gauge model can be used.The quantity of convex surface 11 concave curvatures 12 can be arranged as required, is not limited only to 1.
In order to improve the stability of blade movement, described convex surface 11 is symmetricly set on the two sides of blade 1.Counterbore 111, screw hole 112 also can with convex surface 11 concentric.
Preferably, the surface of convex surface 11 can be set to arc, reduces the impact on blade linear running.
The configuration design of concave-convex blade can carry out standard modular design according to the size of the thickness of blade, selected motor, and the electric multiblade optical grating being become to need by block combiner, reduces design, manufacturing cost.
Embodiment 2:
The multi-leaf optical grating structure of a kind of concave-convex blade as shown in Figures 3 to 5, the driving mechanism comprising overlapped blade 1 and be connected on blade 1, described driving mechanism comprises driving device 21, screw mandrel 22 and nut 23, the two ends of described screw mandrel 22 are connected on driving device 21 and nut 23, the concave curvatures 12 described blade 1 being provided with convex surface 11 and matching with the convex surface 11 of adjacent blades 1, described convex surface 11 is provided with for the counterbore 111 of hold-down nut 23 and the screw hole 112 for adapting to screw mandrel 22.Convex surface 11 is provided with the screw hole adapting to screw mandrel profile, screw mandrel can be made flexible in screw hole, and and do not interfere between blade.At convex surface, nut counterbore and screw hole are set, effectively can increase the thickness of blade at this place and intensity, make counterbore and screw hole than arranging larger during slim vane simultaneously, therefore when same vane thickness, nut and the screw mandrel of more large gauge model can be used, reduce the manufacture difficulty of screw mandrel and nut, the corresponding increase of the diameter due to screw mandrel, improve the rigidity of screw mandrel, the reliability also corresponding raising of complete machine.
In order to improve the stability of blade movement, described convex surface 11 is symmetricly set on the two sides of blade 1.Counterbore 111, screw hole 112 also can with convex surface 11 concentric.
The structure combined by blade and vane drive mechanism linearly can rearrange the multi-leaf optical grating of any amount, adapts to accurate conformal control.
Wherein, driving device 21 can adopt the structures such as motor to realize.
As mentioned above, this utility model can be realized preferably.
Claims (6)
1. a concave-convex blade, comprises blade (1), it is characterized in that: described blade (1) is provided with convex surface (11) and concave curvatures (12), and one end of described convex surface (11) is provided with counterbore (111) and screw hole (112).
2. a kind of concave-convex blade according to claim 1, is characterized in that: described convex surface (11) is symmetricly set on the two sides of blade (1).
3. a kind of concave-convex blade according to claim 1, is characterized in that: described counterbore (111), screw hole (112) and convex surface (11) concentric.
4. the multi-leaf optical grating structure of a concave-convex blade, the driving mechanism comprising overlapped blade (1) and be connected on blade (1), described driving mechanism comprises driving device (21), screw mandrel (22) and nut (23), the two ends of described screw mandrel (22) are connected on driving device (21) and nut (23), it is characterized in that: the concave curvatures (12) described blade (1) being provided with convex surface (11) and matching with the convex surface (11) of adjacent blades (1), described convex surface (11) is provided with for the counterbore (111) of hold-down nut (23) and the screw hole (112) for adapting to screw mandrel (22).
5. the multi-leaf optical grating structure of a kind of concave-convex blade according to claim 4, is characterized in that: described convex surface (11) is symmetricly set on the two sides of blade (1).
6. the multi-leaf optical grating structure of a kind of concave-convex blade according to claim 4, is characterized in that: described counterbore (111), screw hole (112) and convex surface (11) concentric.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898842.3U CN205084239U (en) | 2015-11-12 | 2015-11-12 | Concave -convex blade and have multi leaf collimator structure of this blade |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520898842.3U CN205084239U (en) | 2015-11-12 | 2015-11-12 | Concave -convex blade and have multi leaf collimator structure of this blade |
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| Publication Number | Publication Date |
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| CN205084239U true CN205084239U (en) | 2016-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520898842.3U Active CN205084239U (en) | 2015-11-12 | 2015-11-12 | Concave -convex blade and have multi leaf collimator structure of this blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233428A (en) * | 2015-11-12 | 2016-01-13 | 成都伊贝基科技有限公司 | Concave and convex blade and multi-blade grating structure with blades |
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- 2015-11-12 CN CN201520898842.3U patent/CN205084239U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105233428A (en) * | 2015-11-12 | 2016-01-13 | 成都伊贝基科技有限公司 | Concave and convex blade and multi-blade grating structure with blades |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |