CN110404181A - A kind of radiotherapy equipment and its beam-defining clipper - Google Patents
A kind of radiotherapy equipment and its beam-defining clipper Download PDFInfo
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- CN110404181A CN110404181A CN201810385759.4A CN201810385759A CN110404181A CN 110404181 A CN110404181 A CN 110404181A CN 201810385759 A CN201810385759 A CN 201810385759A CN 110404181 A CN110404181 A CN 110404181A
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- 208000019300 CLIPPERS Diseases 0.000 title claims abstract description 20
- 208000021930 chronic lymphocytic inflammation with pontine perivascular enhancement responsive to steroids Diseases 0.000 title claims abstract description 20
- 238000001959 radiotherapy Methods 0.000 title claims abstract description 15
- 230000005855 radiation Effects 0.000 claims abstract description 30
- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 230000001360 synchronised effect Effects 0.000 claims description 16
- 238000005452 bending Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 description 11
- 239000011148 porous material Substances 0.000 description 8
- 230000002093 peripheral effect Effects 0.000 description 7
- 230000008569 process Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 206010028980 Neoplasm Diseases 0.000 description 3
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
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- 238000010276 construction Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/10—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy
- A61N5/1042—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy with spatial modulation of the radiation beam within the treatment head
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Abstract
This application discloses a kind of beam-defining clippers, including rotary collimator, the rotary collimator includes there is central cavity, side to be radially distributed with the truncated cone-shaped shell of different and parallel with the bus rotation collimating aperture in several apertures and the driving device for driving the truncated cone-shaped housing into rotation, and angle detection device for detecting the truncated cone-shaped shell angle and be connected respectively with the driving device and the angle detection device, the signal for receiving the angle detection device transmission and control the control device that the driving device starts or stops according to reception signal.Using the collimator, driving device described in the angle detection device and the control device co- controlling rotates or stops automatically, the truncated cone-shaped shell rotates or stops automatically therewith, to complete the replacement of radiation launched field, it avoids replacing collimator repeatedly, therefore, collimator provided herein can easily and fast, automatically replace radiation launched field.A kind of radiotherapy equipment is also disclosed in the application.
Description
Technical field
The present invention relates to radiation therapy technology field, in particular to a kind of beam-defining clipper.The invention further relates to a kind of radiation to control
Treat equipment.
Background technique
Collimator is mainly used for carrying out radiotherapy to tumour usually as the radiation head assembly of medical accelerator.Swollen
It, usually need to be according to different patients, the radiation visual field of different postural change collimators, not damage during tumor radiotherapy
Hurt and radiotherapy is carried out to the tumour of patient's body a certain size and shape under the premise of normal tissue and vital organs.Therefore,
Improving collimator just seems particularly necessary.
The radiation collimation system of existing medical accelerator is mainly by example of primary collimator, secondary collimator and additional collimator
Composition, and what the transformation for radiating launched field was mainly realized by additional collimator.By the mapping mode of radiation launched field, standard is added
Straight device be divided into again continuously adjustable launched field collimator and two kinds of collimator of discontinuous adjustable launched field.The collimation of continuously adjustable launched field
Device is usually made of muti-piece flapper, and the different radiation launched fields of replacement collimator are realized by more complex mechanical structure,
Structure is usually more complex.However, the collimator of discontinuous adjustable launched field is usually to integrate the collimator of different pore size,
The replacement of different pore size collimator need to can be carried out by adjusting collimator position only to realize the replacement of radiation launched field, knot
Structure is relatively easy, using more extensive compared with the former.
By taking discontinuous adjustable launched field collimator as an example, existing collimator generally includes collimator changer and collimator transformation
Control system is fixed on collimator changer so that one or more collimators are converted control system by collimator automatically.
A large amount of time transfer, dismounting collimator must be occupied during replacing collimator, cause to be difficult easily and fast, automatically
Collimator is replaced, to be difficult easily and fast, automatically to replace radiation launched field.
Summary of the invention
In view of this, can easily and fast, automatically replace radiation the purpose of the present invention is to provide a kind of beam-defining clipper
Launched field.Another object of the present invention is to provide a kind of radiotherapy equipments, operate easier.
Its concrete scheme is as follows:
Collimator provided herein, including rotary collimator, the rotary collimator include:
The circle of different and parallel with the bus rotation collimating aperture in several apertures is radially distributed with central cavity, side
Platform shape shell；
It is connected with the truncated cone-shaped shell, the driving device for driving the truncated cone-shaped housing into rotation；
It is connected with the truncated cone-shaped shell, the angle detection device for detecting the truncated cone-shaped shell angle；
It is connected respectively with the driving device and the angle detection device, is sent for receiving the angle detection device
Signal and control the control device that the driving device starts or stops according to signal is received.
Preferably, the driving device includes:
Across the central cavity, it is used to support the support shaft of the truncated cone-shaped housing into rotation；
It is installed in the support shaft and is connected with the truncated cone-shaped shell, for driving the truncated cone-shaped shell around described
The synchronous belt of support shaft rotation；
It is connected with the synchronous belt, the retarder for transmitting torque；
It is connected with the retarder, for providing the indirect driving motor of torque.
Preferably, the synchronous belt includes:
It is connected in the central cavity and with the support shaft, the big band for driving the truncated cone-shaped housing into rotation
Wheel；
It is connected with the output end of the retarder, the small pulley for transmitting torque；
The transmission belt being connected between the big belt wheel and the small pulley.
Preferably, the driving device includes:
It is connected in the central cavity and with the truncated cone-shaped shell, for driving the truncated cone-shaped housing into rotation
Shaft；
It is connected with the shaft, for the direct driving motor of output torque.
Preferably, further includes:
It is connected with the truncated cone-shaped shell and the central axis of central axis and the truncated cone-shaped shell is in a certain angle, has
There is the secondary collimator for the fixation collimating aperture that perforation can be alternatively aligned with several rotation collimating apertures.
Preferably, the contact surface between the secondary collimator and the rotary collimator is arc surface.
Preferably, further includes:
It is installed on the periphery of the secondary collimator and is connected with the rotary collimator, is used to support and connecting the two
Support.
Preferably, further includes:
It is connected respectively with the retarder and the indirect driving motor and is connected with the support, for supporting institute respectively
State the fixation bracket of retarder and the indirect driving motor.
Preferably, further includes:
It is fixed between the direct driving motor and the support, is used to support the bending bracket of the direct driving motor.
The application also provides a kind of radiotherapy equipment, including radiation head, further includes that institute is installed on described in any one as above
State the beam-defining clipper on radiation head.
With respect to the background art, collimator provided herein, including rotary collimator, the rotary collimator include
Truncated cone-shaped shell, driving device, angle detection device and control device, the truncated cone-shaped shell have central cavity, side
It is radially distributed with several apertures differences and the rotation collimating aperture parallel with bus, the driving device and angle detection dress
The angle for being respectively used to drive the truncated cone-shaped housing into rotation and detecting the truncated cone-shaped shell is set, the control device is for connecing
It receives the signal that the angle detection device is sent and controls the driving device operation or stopping according to signal is received.
The volume that the angle information of the rotation collimating aperture of different pore size is encoded, and will be loaded with angle signal in advance
Code is stored into the control device；Then start the driving device, the driving device drives the truncated cone-shaped shell rotation
Turn, while the rotation angle of truncated cone-shaped shell described in the angle detection device real-time detection, the angle detection device is by institute
The angle signal for stating truncated cone-shaped shell is converted to electric signal, and electric signal is then sent to the control device；The control dress
Setting becomes angle signal for received electric signal further decoding, and the angle signal and preset angle signal are judged, if
The two is consistent, then the driving device is out of service, and the truncated cone-shaped shell stops rotating, current to be directed at the described of peripheral equipment
The launched field of rotation collimating aperture is just the radiation launched field of collimator provided herein；If the two is inconsistent, the driving dress
It sets and continues to run, the truncated cone-shaped shell body continues to rotate, until the two is consistent, then repeats the above steps.
It only needs to examine by the driving device, the angle when adjusting the radiation launched field of collimator provided herein
Surveying device and the control device just can control the truncated cone-shaped shell and rotate or be automatically stopped automatically, thus be provided thereon
The rotation collimating aperture of several different pore sizes is just rotated or is automatically stopped automatically relative to peripheral equipment output end, the rotation of different pore size
Turn collimating aperture with different radiation launched fields, by adjusting the rotation collimating aperture class being currently aligned with peripheral equipment output end
Type and then realization adjustment radiation launched field.Whole process adjustment process carries out rotating the truncated cone-shaped shell, side easy to operate
Just, and can be avoided and replace collimator repeatedly, to avoid shifting repeatedly, dismount collimator, save replacement collimator when
Between, therefore can easily and fast, automatically replace radiation launched field.
In addition, radiotherapy equipment provided herein, including radiation head, it further include being installed on the radiation head
Beam-defining clipper.Due to the improvement of the beam-defining clipper, so that the operation of the radiotherapy equipment is easier.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is a kind of main view of the provided collimator of specific embodiment of the present invention；
Fig. 2 is the diagrammatic cross-section of A-A in Fig. 1；
Fig. 3 is the right side view of Fig. 1；
Fig. 4 is the axonometric drawing of big belt wheel in Fig. 1；
Fig. 5 is the cross-sectional view of big belt wheel in Fig. 1；
Fig. 6 is the diagrammatic cross-section of secondary collimator in Fig. 1；
Fig. 7 for the provided collimator of specific embodiment of the invention another main view；
Fig. 8 is the diagrammatic cross-section of B-B in Fig. 7.
Appended drawing reference is as follows:
Rotary collimator 1, secondary collimator 2, support 3 and fixed bracket 4；
Truncated cone-shaped shell 11, driving device 12 and angle detection device 13；
Rotate collimating aperture 110；
Support shaft 121, synchronous belt 122, retarder 123 and indirect driving motor 124；
Big belt wheel 1221, small pulley 1222 and transmission belt 1223；
Fixed collimating aperture 21；
Shaft 221 and direct driving motor 222；
Bend bracket 5.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to enable those skilled in the art to better understand the solution of the present invention, right in the following with reference to the drawings and specific embodiments
The present invention is described in further detail.
Fig. 1 to Fig. 3 is please referred to, Fig. 1 is a kind of main view of the provided collimator of specific embodiment of the present invention；Fig. 2 is Fig. 1
The diagrammatic cross-section of middle A-A；Fig. 3 is the right side view of Fig. 1.
Collimator disclosed in an embodiment of the present invention, including rotary collimator 1, secondary collimator 2, support 3 and solid
Fixed rack 4.
Wherein, rotary collimator 1 includes truncated cone-shaped shell 11, driving device 12, angle detection device 13 and control device.
In this specific embodiment, the lateral surface of truncated cone-shaped shell 11 is substantially tapered, and has central cavity, the center
Cavity is it is also preferred that be in truncated cone-shaped, the thickness to guarantee truncated cone-shaped shell 11 is uniform, and certainly, the structure of central cavity is not limited to rotary table
Shape is had no effect on using structures such as cylinders and is achieved the object of the present invention.The side of truncated cone-shaped shell 11 is radially distributed with several
The rotation collimating aperture 110 that aperture is different and central axis is parallel with the bus of truncated cone-shaped shell 11, different apertures means
Different radiation launched fields.In this specific embodiment, in order to which the wall thickness for making truncated cone-shaped shell 11 is unlikely to too thick and conveniently with two
Grade collimator 2 matches, and the periphery of each rotation collimating aperture 110 is equipped with the equal protective case of outer diameter, thus to a certain degree can
Enough effectively reduce the leakage amount of penetrating.The central axis of each protective case is parallel with the bus of truncated cone-shaped shell 11, and with it is corresponding
The central axis for rotating collimating aperture 110 is overlapped, and correspondingly, the outer diameter of each protective case is much larger than the wall thickness of truncated cone-shaped shell 11,
The outer surface of natural truncated cone-shaped shell 11 and inner surface are wavy.Certainly, the outer diameter of each protective case can also be unequal.
Specifically, the truncated cone-shaped shell 11 in the specific embodiment includes 12 rotation collimating apertures 110, two neighboring rotation collimating aperture
It is in 30 ° of angles between 110 central axis, so that each rotation collimating aperture 110 be made equably to be arranged in truncated cone-shaped shell
On 11 lateral surface, certainly, quantity and the arrangement mode for rotating collimating aperture 110 are without being limited thereto.It is worth noting that, specific at this
In embodiment, all rotation collimating apertures 110 are bellmouth, and internal diameter gradually increases from the miner diameter end of truncated cone-shaped shell 11 to bigger diameter end
Greatly, certainly, the structure for rotating collimating aperture 110 is without being limited thereto.
Driving device 12 is connected with truncated cone-shaped shell 11, is mainly used for that truncated cone-shaped shell 11 is driven to rotate.In the specific reality
It applies in example, driving device 12 includes support shaft 121, synchronous belt 122, retarder 123 and indirect driving motor 124.
Support shaft 121 passes through the central cavity of truncated cone-shaped shell 11, is mainly used for that truncated cone-shaped shell 11 is supported to rotate.At this
In specific embodiment, support shaft 121 is specially multi-diameter shaft, and top is obliquely connected on support 3.Support shaft 121 is from truncated cone-shaped
The top of shell 11 passes through, and correspondingly, offers the round peace for passing through for support shaft 121 at the top of truncated cone-shaped shell 11
Hole is filled, and the maximum outside diameter section of support shaft 121 is in contact with the circular mounting hole.The one end of support shaft 121 far from support 3 and same
Step band 122 is in contact.Certainly, the structure of support shaft 121 and mounting means are without being limited thereto.
Synchronous belt 122 is installed in support shaft 121, and is connected with truncated cone-shaped shell 11, is mainly used for driving truncated cone-shaped shell
Body is rotated around support shaft 121.In this specific embodiment, synchronous belt 122 includes big belt wheel 1221, small pulley 1222 and transmission belt
1223。
Fig. 4 and Fig. 5 are please referred to, Fig. 4 is the axonometric drawing of big belt wheel in Fig. 1；Fig. 5 is the cross-sectional view of big belt wheel in Fig. 1.
Wherein, big belt wheel 1221 is located in the central cavity of truncated cone-shaped shell 11, is connected with support shaft 121, is mainly used for
Truncated cone-shaped shell 11 is driven to rotate.Specifically, big belt wheel 1221 is also the truncated cone-shaped big belt wheel with truncated cone-shaped central cavity, and
1221 inside top of big belt wheel has the cylindrical support section extended downwardly, leads between the cylindrical support section and support shaft 121
It crosses a pair of of spring bearing to link together, so that big belt wheel 1221 drives truncated cone-shaped shell 11 to rotate relative to support shaft 121.Greatly
The top of belt wheel 1221 and the top of truncated cone-shaped shell 11 can be fixed together by bolt and nut, certainly, the fixation of the two
Mode is without being limited thereto.The above-mentioned preferred roller bearing of spring bearing, it is certainly, without being limited thereto.In addition, the lateral surface bottom of big belt wheel 1221
The edge in portion is additionally provided with engaging tooth, in order to which transmission belt 1223 and big belt wheel 1221 come into full contact with, effectively improves transmission efficiency, and
And it can prevent transmission belt 1223 from falling off.Several lightening holes can also be arranged in the side of big belt wheel 1221, to reduce rotation
Turn the quality of collimator 1, it is convenient to rotate more quickly.It is worth noting that, the bottom end of big belt wheel 1221 must exceed truncated cone-shaped shell
11 bottom end a distance of body, interferes to prevent transmission belt 1223 and big belt wheel 1221.
Small pulley 1222 is connected phase with the output end of retarder 123, is mainly used for transmitting torque, correspondingly, small pulley
1222 outer peripheral surface is equipped with the engaging tooth to match with big belt wheel 1221.Transmission belt 1223 is then connected to big belt wheel 1221 and small band
Between wheel 1222, for transmitting torque, realizes and slow down.Certainly, the structure of synchronous belt 122 is without being limited thereto.
Retarder 123 is connected with synchronous belt 122, and indirect driving motor 124 is connected with retarder 123, to drive indirectly
After the torque that motor 124 exports is slowed down via the multiple-stage reduction unit that retarder 123 and synchronous belt 122 are formed, it is transferred to rotary table
On shape shell 11, certainly, ways of deceleration is not limited to retarder 123 and synchronous belt 122, can also be using the side such as gear, chain conveyer
Formula, which is realized, slows down.In this specific embodiment, the preferred stepper motor of indirect driving motor 124, it is of course also possible to be other types
Motor, it is without being limited thereto.
In this specific embodiment, retarder 123 and indirect driving motor 124 are each attached on fixed bracket 4, fixed branch
Frame 4 and support 3 are connected, and thus retarder 123 and indirect driving motor 124 just can be realized fixation.Certainly, for providing torque
Mode be not limited to indirect driving motor 124, torque can also be provided using other modes, have no effect on and realize mesh of the invention
's.
Angle detection device 13 is connected with truncated cone-shaped shell 11, mainly for detection of the rotation angle of truncated cone-shaped shell 11.
In this specific embodiment, angle detection device 13 is specially rotary encoder, it is generally the case that the rotation of different pore size collimates
Hole 110 is corresponding with the rotary encoder, more accurately to detect the rotation angle of rotation collimating aperture 110, needed for guaranteeing
It rotates collimating aperture 110 and is aligned perforation with secondary collimator 2.Certainly, which can be incremental rotary encoder,
It can be absolute encoder.When above-mentioned rotary encoder is incremental rotary encoder, which includes
The fixed part being connected with support shaft 121 and the rotating part being connected with big belt wheel 1221.When above-mentioned rotary encoder is absolute coding
When device, the absolute encoder mounting means is identical as incremental rotary encoder mounting means, and details are not described herein.
It is worth noting that, the application uses Redundancy Design in order to further ensure that the normal tissue of patient from damage,
Specifically add rotary encoder in indirect driving motor 124, further to promote safety, while advantageously reduce because
Encoder fault and the risk for causing malpractice.
Control device is connected with driving device 12 and angle detection device 13 respectively, sends out for receiving angle detection device 13
The signal that send simultaneously is started or stoped according to signal control driving device 12 is received.In this specific embodiment, control device can wrap
It is certainly, without being limited thereto containing components such as PLC, single-chip microcontrollers.
Referring to FIG. 6, Fig. 6 is the diagrammatic cross-section of secondary collimator in Fig. 1.
Secondary collimator 2 is connected with truncated cone-shaped shell 11, and the central axis of secondary collimator 2 and truncated cone-shaped shell 11
Central axis is in a certain angle.In addition, also have can be with several rotation collimating apertures 110 alternatively at the center of secondary collimator 2
It is aligned the fixation collimating aperture 21 of perforation.In this specific embodiment, the outer peripheral surface of secondary collimator 2 is stepped, to be clamped
In on support 3.The central axis of secondary collimator 2 is overlapped with the central axis of fixed collimating aperture 21, and fixed collimating aperture 21
For conical through-hole.When the rotation of rotary collimator 1 to a certain position stops, one of rotation collimating aperture 110 is located exactly at two
The underface of grade collimator 2, while the rotation collimating aperture 110 is aligned with fixed collimating aperture 21 and penetrates through namely two kinds of collimating apertures
Central axis coincides, and contact surface mutually agrees with.It is worth noting that, the contact surface between secondary collimator 2 and rotary collimator 1
For arc surface, exported at a distance between 1 entrance of rotary collimator to reduce secondary collimator 2, to reduce the leakage amount of penetrating.Specifically
Ground, the bottom of secondary collimator 2 are lower convex type arc surface, and accordingly rotating at the top of the protective case of collimating aperture 110 is concave circle
Cambered surface, it is certainly, without being limited thereto.
Support 3 is mounted on the periphery of secondary collimator 2, and is connected by support shaft 121 with rotary collimator 1, main to use
In supporting and both connect.Support 3 is generally mounted on the radiation head of medical accelerator commonly used in being connected with peripheral equipment.
In this specific embodiment, the center of support 3 offers the stepped hole for being clamped secondary collimator 2.In order to save material and
It is easily installed on the radiation head of medical accelerator, the outer peripheral surface of support 3 is also stepped.Connection is equipped at the top of support 3
Flange, certainly, the structure of support 3 are without being limited thereto.
Fixed bracket 4 is connected with retarder 123 and indirect driving motor 124 respectively, and is connected with support 3, is mainly used for
Support retarder 123 and indirect driving motor 124.In this specific embodiment, it is flat to can be common connection for fixed bracket 4
Plate, it is certainly, without being limited thereto.
The workflow of collimator provided by the specific embodiment is as follows:
The rotation collimating aperture 110 of different pore size is successively encoded into different predetermined angle signals, and stores to control and fills
In setting；
Start indirect driving motor 124, torque is successively transferred to retarder 123 and synchronous belt by indirect driving motor 124
122, big belt wheel 1221 drives truncated cone-shaped shell 11 to rotate；
Angle detection device 13 detects the rotational angle of truncated cone-shaped shell 11 simultaneously, after angle signal is converted to electric signal
It is sent to control device；
Electric signal is then converted to angle signal by control device, the angle signal after comparing conversion and the predetermined angle transferred
Whether signal is consistent；
If it is, driving motor 124 stops operating indirectly, required rotation collimating aperture 1011 and fixed collimating aperture 21 are right
Together, the adjusting of radiation launched field is completed；
If it is not, then driving motor 124 continues to rotate indirectly, truncated cone-shaped shell 11 continues to rotate therewith, until after conversion
Angle signal it is consistent with the predetermined angle signal transferred stop operating, repeat the above steps.
A kind of adjustment for radiating launched field is just completed in this way, is repeated the above steps, and is converted predetermined angle signal, is completed a variety of spokes
The adjustment of launched field.
In conclusion collimator provided herein includes rotary collimator 1, wherein rotary collimator 1 includes rotary table
Shape shell 11, driving device 12, angle detection device 13 and control device.It is common by angle detection device 13 and control device
Effect, control driving device 12 are rotated or are automatically stopped automatically, rotate or be automatically stopped automatically to control truncated cone-shaped shell 11,
So that the rotation collimating aperture 110 of different pore size is aligned perforation with fixed collimating aperture 21 respectively, to complete the replacement of radiation launched field.
During replacement radiates launched field, it is only necessary to which automatic rotating round table shape shell 11 is avoided replacing collimator repeatedly, be simplified
Step is replaced, saves replacing construction, therefore, collimator provided herein can easily and fast, automatically replace radiation
Launched field.
Please refer to Fig. 7 and Fig. 8, Fig. 7 for the provided collimator of another specific embodiment of the invention main view；Fig. 8 is
The diagrammatic cross-section of B-B in Fig. 7.
Collimator disclosed in another kind embodiment of the invention, other than the change of driving method, most of structure with it is upper
It is identical to state embodiment.Specifically, with the support shaft 121 in shaft 221 and the substitution above-described embodiment of direct driving motor 222, synchronous belt
122, retarder 123 and indirectly driving motor 124.
In this specific embodiment, shaft 221 is located in truncated cone-shaped shell 11, is mainly used for driving 11 turns of truncated cone-shaped shell
It is dynamic.Specifically, the top of shaft 221 and the top of truncated cone-shaped shell 11 are fixed with one, and the other end of shaft 221 is directly and directly
It drives motor 222 to be connected, rotary encoder may be mounted in shaft 221, also may be mounted on direct driving motor 222, certainly, be
Promotion safety also uses Redundancy Design, and shaft 221 and direct driving motor 222 can install rotary encoder simultaneously.Control dress
Set the rotation and stopping that truncated cone-shaped shell 11 is directly controlled by the revolving speed of control direct driving motor 22.
In this specific embodiment, the preferred servo motor of direct driving motor 222, naturally it is also possible to other kinds of motor, and
Do not influence the purpose of realization the application.
In addition, since the installation site of direct driving motor 222 is relative to driving motor 124 indirect in above-mentioned specific embodiment
Installation site changes, therefore the support frame for being used to support direct driving motor 222 is changed to bending bracket 5.In this specific embodiment,
Bending bracket 5 is specially open type square frame, including one section of vertical section and two sections of water being connected respectively with the vertical section both ends
Flat section, wherein the horizontal segment above vertical section is connected with support 3, and another horizontal segment is connected to direct driving motor by pin shaft
It is played a supporting role with holding up direct driving motor 222 222 lower section.
The beneficial effect that the specific embodiment generates is identical as the beneficial effect that above-mentioned specific embodiment generates, herein no longer
It repeats.
In addition, radiotherapy equipment provided herein, including radiation head, it further include the limit beam being installed on radiation head
Device.Due to the improvement of beam-defining clipper, so that the operation of radiotherapy equipment becomes easier.
Finally, it is to be noted that, herein, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or apparatus that includes the element.
Radiotherapy equipment provided by the present invention and its beam-defining clipper are described in detail above, it is used herein
A specific example illustrates the principle and implementation of the invention, and the above embodiments are only used to help understand originally
The method and its core concept of invention；At the same time, for those skilled in the art, according to the thought of the present invention, specific
There will be changes in embodiment and application range, in conclusion the content of the present specification should not be construed as to of the invention
Limitation.
Claims (10)
1. a kind of beam-defining clipper, which is characterized in that including rotary collimator (1), the rotary collimator (1) includes:
Different and parallel with the bus rotation collimating aperture (110) in several apertures is radially distributed with central cavity, side
Truncated cone-shaped shell (11)；
It is connected with the truncated cone-shaped shell (11), the driving device (12) for driving truncated cone-shaped shell (11) rotation；
It is connected with the truncated cone-shaped shell (11), the angle detection device for detecting truncated cone-shaped shell (11) angle
(13)；
It is connected respectively with the driving device (12) and the angle detection device (13), for receiving the angle detection device
(13) signal sent and the control device started or stoped according to the signal control driving device (12) is received.
2. beam-defining clipper according to claim 1, which is characterized in that the driving device (12) includes:
Across the central cavity, it is used to support the support shaft (121) of the truncated cone-shaped shell (11) rotation；
It is installed on the support shaft (121) and is connected with the truncated cone-shaped shell (11), for driving the truncated cone-shaped shell
(11) around the synchronous belt (122) of the support shaft (121) rotation；
It is connected with the synchronous belt (122), the retarder (123) for transmitting torque；
It is connected with the retarder (123), for providing the indirect driving motor (124) of torque.
3. beam-defining clipper according to claim 2, which is characterized in that the synchronous belt (122) includes:
It is connected in the central cavity and with the support shaft (121), for driving the truncated cone-shaped shell (11) to rotate
Big belt wheel (1221)；
It is connected with the output end of the retarder (123), the small pulley (1222) for transmitting torque；
The transmission belt (1223) being connected between the big belt wheel (1221) and the small pulley (1222).
4. beam-defining clipper according to claim 1, which is characterized in that the driving device (12) includes:
It is connected in the central cavity and with the truncated cone-shaped shell (11), for driving the truncated cone-shaped shell (11) to turn
Dynamic shaft (221)；
It is connected with the shaft (221), for the direct driving motor (222) of output torque.
5. beam-defining clipper according to any one of claims 1 to 4, which is characterized in that further include:
It is connected with the truncated cone-shaped shell (11) and central axis and the central axis of the truncated cone-shaped shell (11) is in a clamp
There is the second level for the fixation collimating aperture (21) that can be alternatively aligned perforation with several rotations collimating aperture (110) to collimate at angle
Device (2).
6. beam-defining clipper according to claim 5, which is characterized in that the secondary collimator (2) and the rotary collimator
(1) contact surface between is arc surface.
7. beam-defining clipper according to claim 6, which is characterized in that further include:
It is installed on the periphery of the secondary collimator (2) and is connected, is used to support and connect the two with the rotary collimator (1)
Support (3).
8. beam-defining clipper according to claim 2, which is characterized in that further include:
It is connected respectively with the retarder (123) and the indirect driving motor (124) and is connected with the support (3), is used for
The fixation bracket (4) of the retarder (123) and the indirect driving motor (124) is supported respectively.
9. beam-defining clipper according to claim 4, which is characterized in that further include:
It is fixed between the direct driving motor (222) and the support (3), is used to support the bending of the direct driving motor (222)
Bracket (5).
10. a kind of radiotherapy equipment, which is characterized in that further include as described in any one of claim 1 to 9 including radiation head
The beam-defining clipper being installed on the radiation head.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385759.4A CN110404181A (en) | 2018-04-26 | 2018-04-26 | A kind of radiotherapy equipment and its beam-defining clipper |
| PCT/CN2018/088638 WO2019205220A1 (en) | 2018-04-26 | 2018-05-28 | Radiotherapy apparatus and beam limiter therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810385759.4A CN110404181A (en) | 2018-04-26 | 2018-04-26 | A kind of radiotherapy equipment and its beam-defining clipper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110404181A true CN110404181A (en) | 2019-11-05 |
Family
ID=68293463
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810385759.4A Pending CN110404181A (en) | 2018-04-26 | 2018-04-26 | A kind of radiotherapy equipment and its beam-defining clipper |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110404181A (en) |
| WO (1) | WO2019205220A1 (en) |
Cited By (1)
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| 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 |
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| Publication number | Publication date |
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| WO2019205220A1 (en) | 2019-10-31 |
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