CN109847198A - A kind of accelerator adjustment device - Google Patents
A kind of accelerator adjustment device Download PDFInfo
- Publication number
- CN109847198A CN109847198A CN201811646062.4A CN201811646062A CN109847198A CN 109847198 A CN109847198 A CN 109847198A CN 201811646062 A CN201811646062 A CN 201811646062A CN 109847198 A CN109847198 A CN 109847198A
- Authority
- CN
- China
- Prior art keywords
- beat
- head
- accelerator
- bracket
- radiotherapy
- 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.)
- Granted
Links
- 238000001959 radiotherapy Methods 0.000 claims abstract description 53
- 230000001105 regulatory effect Effects 0.000 claims abstract description 19
- 238000003384 imaging method Methods 0.000 claims description 14
- 230000003028 elevating effect Effects 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 claims 1
- 206010028980 Neoplasm Diseases 0.000 abstract description 31
- 230000001225 therapeutic effect Effects 0.000 abstract description 14
- 230000002285 radioactive effect Effects 0.000 abstract description 10
- 230000003439 radiotherapeutic effect Effects 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000006378 damage Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 230000005855 radiation Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000002601 radiography Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000004980 dosimetry Methods 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000037361 pathway Effects 0.000 description 2
- 229910001369 Brass Inorganic materials 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010951 brass Substances 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 201000011510 cancer Diseases 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000005311 nuclear magnetism Effects 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
- 230000000451 tissue damage Effects 0.000 description 1
- 231100000827 tissue damage Toxicity 0.000 description 1
- 210000004881 tumor cell Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Radiation-Therapy Devices (AREA)
Abstract
The invention proposes a kind of accelerators to adjust device, the adjustment device includes head carrier, head elevation and subsidence regulating device and beat bracket, accelerator provided by the invention adjusts device, the adjustment of upper-lower height, the displacement that deflects can be carried out to head respectively, solve the problems, such as that tumour and equipment rotate integrally therapeutic community's decentraction caused by limiting because of image contrast apparatus structure, radioactive source beat can be carried out when there is normal human tissue to block tumour simultaneously and avoids irradiation to normal human tissue, shorten patient's radiotherapy time, increases radiotherapeutic effect.Accelerator adjustment device of the invention is used for the radiotherapy apparatus of image contrast apparatus guidance, to solve the problems, such as that existing product can only carry out single dimension radiotherapy.
Description
Technical field
The present invention relates to the radiotherapy apparatus technical fields of image contrast apparatus guidance, in particular to a kind of accelerator
Adjust device.
Background technique
Malignant tumour is one of the chief threat that current mankind health faces, and the trend risen year by year is presented.Radiation
The treatment to tumour is realized in treatment by high-energy radiation irradiation.Since high-energy ray can not only kill tumour cell, while
Normal histocyte can be caused to damage, so accuracy is the key factor of radiotherapy technology.
In the radiotherapy system research work carried out both at home and abroad at present, radioactive source head can only be rotated around hospital bed, to patient
Tumor locus carries out single dimension radiotherapy.Such as the MRIdian of ViewRay company, the U.S. passes through a rotary frame, installation
Three Co60 teletherapy heads realize being positioned as and treating for tumour.Canadian Alberta university CCI(Cross Cancer
Institute) magnetic resonance radiography system and linear accelerator are coupled together by a door frame annulus, pass through the rotation of door frame
Turn the rotary emission of drive radiology system, but radioactive source head can only be rotated around hospital bed, and it is multilevel cannot to do multi-angle
Radiotherapy.
Accelerator radiates first head when doing single dimension radiotherapy around patient tumors, if having normal human tissue to tumour into
Row will cause to damage when blocking to the normal tissue of human body.In order to avoid cause to block tumour normal tissue damage, then
It needs to carry out the pendulum position irradiation treatment of different directions, or closes radioactive source when being irradiated to the normal tissue for causing to block tumour,
Radioactive source is opened again when around normal tissue.The above operation not only increases time and the pendulum position difficulty of patient radiation's treatment, and
And since therapeutic bed moving distance is limited etc., usually also results in tumor center's point and system centre point deviates, it cannot be guaranteed that respectively
Position Radiotherapy dosimetry is consistent, while will also result in and block tumor radiotherapy irradiation metering not enough by normal human tissue, thus cannot
Reach effective therapeutic effect.
Summary of the invention
In consideration of it, the invention proposes a kind of accelerator heads to adjust device, it is intended to solve the problems, such as existing.
The invention proposes a kind of accelerators to adjust device, for the radiotherapy apparatus of contrast imaging equipment guidance, the machine
Head adjustment device includes head carrier, head elevation and subsidence regulating device and beat bracket, is provided with and adds on the head carrier
Fast device head and head beat drive positioning device, and the head beat driving positioning device can drive accelerator head to do around axis
Beat movement is turned round, and beat position can be measured and be fed back；The head elevation and subsidence regulating device is located at head carrying
Between frame and beat bracket, can stretch adjustment head carrier height up and down；The beat bracket is gantry support, has beat
Bracket rotating shaft, beat bracket are equipped with nutation driving device, beat bracket can be driven around beat bracket rotating shaft beat, thus
Drive accelerator head also around the beat bracket rotating shaft beat；The accelerator head adjustment device passes through the beat branch
Frame is directly connected across in contrast imaging equipment two sides, or the outside of the contrast imaging equipment is set to by connector.
Further, above-mentioned beat bracket two sides further respectively have aligning device.
Further, above-mentioned aligning device includes: aligning hole, eccentric shaft, roller bearing and eccentric axle lock nut；It is described
Aligning hole is set on the contrast imaging equipment or the connector, and the center in the aligning hole is located at beat bracket revolution
On axis, several roller bearings are equipped in the aligning hole, the eccentric shaft passes through beat bracket and connect with the roller bearing, leads to
Cross the eccentric axle lock nut locking.
Further, position detecting device is additionally provided on above-mentioned beat bracket.
Further, above-mentioned position detecting device is rotary encoder or grating scale.
Further, above-mentioned head elevation and subsidence regulating device is by several lifter groups at the elevating lever is lead screw elevating lever.
The elevating lever includes: hollow lifting seat and lifting column, and lifting column passes through sliding guide sleeve socket and the liter
It drops in seat, lifting seat bottom is fixed with motor, and motor is connected with ball-screw by shaft coupling, is arranged with ball on ball-screw
Feed screw nut, ball-screw nut is arranged with ball nut mount outside, and ball nut mount is fixed on the inner wall of the lifting column.
Further, above-mentioned head elevation and subsidence regulating device is made of four elevating levers.
Further, above-mentioned accelerator adjustment device further includes clump weight, and the clump weight is located under beat bracket
Side.
Further, above-mentioned clump weight is metal weights block.
Accelerator provided by the invention adjusts device, by head beat drive positioning device, head elevation and subsidence regulating device,
The cooperation of beat bracket can separate the adjustment for carrying out upper-lower height and the displacement that deflects to head, solve because image is made
Tumour and equipment caused by shadow device structure limits rotate integrally therapeutic community's decentraction problem, i.e. radiotherapy irradiation it is equal in
Heart problem, while realizing that accelerator radioactive source to the various dimensions continuous rotation irradiation treatment of tumour, is there is normal human tissue pair
Tumour can carry out radioactive source beat and avoid irradiation to normal human tissue when being blocked, when shortening patient's radiotherapy
Between, increase radiotherapeutic effect.Accelerator adjustment device of the invention is used for the radiotherapy apparatus of image contrast apparatus guidance, to solve
Existing product can only carry out single dimension radiotherapy problem.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention
Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 is the structural schematic diagram that accelerator provided in an embodiment of the present invention adjusts device；
Fig. 2 is the head regulating device structural schematic diagram that accelerator provided in an embodiment of the present invention adjusts device；
Fig. 3 A is the aligning device structural schematic diagram one that accelerator provided in an embodiment of the present invention adjusts device；
Fig. 3 B is the aligning device structural schematic diagram two that accelerator provided in an embodiment of the present invention adjusts device；
Fig. 4 A is that accelerator provided in an embodiment of the present invention adjusts device and image contrast apparatus configuration relation schematic diagram one；
Fig. 4 B is that accelerator provided in an embodiment of the present invention adjusts device and image contrast apparatus configuration relation schematic diagram two；
Fig. 5 is the radiotherapy apparatus structural representation for the image contrast apparatus guidance that the accelerator with the embodiment of the present invention adjusts device
Figure；
Fig. 6 A is that the accelerator with the embodiment of the present invention adjusts the centers such as the radiotherapy apparatus of image contrast apparatus guidance of device
Irradiates schematic diagram one；
Fig. 6 B is to be adjusted in radiotherapy apparatus of image contrast apparatus guidance of device etc. for the accelerator with the embodiment of the present invention
Heart irradiates schematic diagram two；
Fig. 7 is normal group of the radiotherapy apparatus for the image contrast apparatus guidance that the accelerator with the embodiment of the present invention adjusts device
It knits and hides irradiates schematic diagram；
Fig. 8 A is the counterweight of the radiotherapy apparatus for the image contrast apparatus guidance that the accelerator with the embodiment of the present invention adjusts device
Block effect schematic diagram one；
Fig. 8 B is the counterweight of the radiotherapy apparatus for the image contrast apparatus guidance that the accelerator with the embodiment of the present invention adjusts device
Block effect schematic diagram two；
1, accelerator head, 2, beat bracket, 3, head carrier, 4, clump weight, 5, head regulating device, 6, the drive of beat bracket
Dynamic device, 7, position detecting device, 8, aligning device, 9, head beat drive positioning device, 10, image contrast apparatus, 11, make
Shadow equipment supporter, 12, contrast apparatus floating bearing, 13, contrast apparatus rotating shaft, 14, beat bracket rotating shaft, 15, head it is inclined
Swing back shaft, 16, patient, 17, system isocenter point, 18, tumor center's point 19, human normal tissue, 20, tumour, 21, solid
Determine screw, 22, eccentric axle lock nut, 23, eccentric shaft, 24, bearing roller, 25, aligning hole, 26, beam, 27, main shield
Area, 28, therapeutic room, 29, connector.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.It should be noted that in the absence of conflict, embodiment in the present invention and
Feature in embodiment can be combined with each other.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1,3, for the accelerator of the radiotherapy apparatus provided in an embodiment of the present invention for the guidance of image contrast apparatus
Adjust device；The adjustment device includes head carrier 3, head elevation and subsidence regulating device 5 and beat bracket 2.
Accelerator head 1 and head beat driving positioning device 9 are provided on head carrier 3, inside accelerator head 1
Equipped with emission source and multi-blade collimator (MLC), radiotherapy is carried out to tumour for divergent-ray；The driving positioning of head beat
Device 9 is located at 1 periphery of accelerator head, and accelerator head 1 can be driven to carry out around accelerator head yaw rotation axis 15
The revolution beat of certain angle moves, and can beat position be measured and be fed back.
Between head carrier 3 and beat bracket 2, the adjustment head that can stretch up and down is held head elevation and subsidence regulating device 5
3 height of carrier.
Beat bracket 2 is gantry support, has beat bracket rotating shaft 14, which is provided with nutation driving device 6, can drive
Beat bracket 2 is rotated around beat bracket rotating shaft 14；So as to drive accelerator head 1 can also be around beat bracket rotating shaft 14
Beat.
Accelerator head adjusts device and image contrast apparatus 10 there are two types of configuration relation, and one is by radiotherapy accelerator tune
Engagement positions are integrated with image contrast apparatus 10, rotate accelerator adjustment device and image contrast apparatus 10 simultaneously to tumour
Radiotherapy is carried out to be directly connected across by beat bracket 2 in contrast imaging equipment two sides as shown in Figure 4 A.Another kind configuration is closed
System is that accelerator adjustment device is mounted on the outside of image contrast apparatus 10 by connector 29, can independently carry out rotary emission and control
It treats, carry out radiotherapy can also be rotated simultaneously with image contrast apparatus 10, as shown in Figure 4 B.
Come detailed referring to Fig. 1-7 in conjunction with the first configuration relation of accelerator adjustment device and image contrast apparatus
Illustrate the structure and working principle of accelerator adjustment device of the invention.
As shown in figure 5, the radiotherapy apparatus of image contrast apparatus guidance, adjusts device with accelerator as shown in Figure 1,
Wherein beat bracket 2 is fixed on image contrast apparatus by fixing screws 21 across the two sides for being mounted on image contrast apparatus 10
On 10, beat bracket 2 drives accelerator head 1 and entire adjustment device to turn round around beat bracket using the synchronous driving in two sides
14 beat of axis.Image contrast apparatus 10 is for being scanned imaging to patient tumors, by termed image-guided radiotherapy device to tumour
Accurate radiotherapy is carried out, image contrast apparatus 10 includes nuclear-magnetism MRI, CT, DR etc., is fixed by contrast apparatus bracket 11
With a whole set of radiotherapy apparatus of support, contrast apparatus bracket 11 is mounted on image contrast apparatus 10 by contrast apparatus floating bearing 12
On, to realize that image contrast apparatus can do rotary motion around contrast apparatus rotating shaft 13.
When radiotherapy, to guarantee effect, it is often desirable that the center of radiation beam and the tissue such as tumor center for wanting radiotherapy are
It is consistent, guarantee that each position Radiotherapy dosimetry is consistent in this way；It is required simultaneously in order to avoid blocking the normal tissue of tumour as far as possible
Damage.
The problem of hiding below with reference to Isocenter irradiation and human normal tissue illustrates accelerator head adjustment of the invention
How device works.
Isocenter irradiation
With reference to Fig. 6 A, ideal radiation modality is to put tumor center's point 18 in position to system etc. by modes such as Mobile treatment tables
(i.e. system isocenter point 17 and tumor center's point 18 are to be overlapped, and system isocenter point 17 and contrast apparatus turn round on heart point 17
Axis 13 is overlapped), the rotation of the 1 system for winding isocenter point 17 of head of accelerator can be realized and revolve to the equal centers of tumor center's point 18
Turn.In this case, since tumor center's point 18 is located at the rotation center of radioactive source, radiography is surrounded in accelerator head 1
At each point in 13 rotary course of equipment rotating shaft, accelerator head 1 is all fixed value, ray with a distance from tumor center's point 18
Energy will not cause the dosage at tumor center's point 18 to change because of factors such as distances, to realize Isocenter irradiation.
But in practical application, due to the difference of contrast apparatus type, structure and image-forming principle, cause the movement of therapeutic bed away from
From being limited, position cannot be arbitrarily put, it is thus possible to cause the position of tumor center's point 18 to deviate system isocenter point 17, such as Fig. 6 A institute
Show, in the case, is rotated if accelerator head 1 continues around contrast apparatus rotating shaft 13 by former mode, it may appear that such as ray
Shu Wufa is irradiated to the case where tumor center's point 18.In order to be irradiated to tumor center's point 18, existing equipment can only be by surrounding
Head yaw rotation axis 15 deflects 1 certain angle α of accelerator head, is irradiated beam alignment tumor center's point 18.But
In this manner it is achieved that the distance of point 18 is not inevitable identical in each position of rotational trajectory from accelerator head 1 to tumor center,
The dosage for so causing ray to reach at tumor center's point 18 changes.
And adjustment device of the invention, due to that can adjust up and down and accelerate by flexible with head elevation and subsidence regulating device 5
The position of device head 1, so that adjusting range is bigger, to realize Isocenter irradiation.
Specifically, when the tumor center of patient 16 point 18 cannot be put on system isocenter point 17, in radiotherapy
Before first pass through image contrast apparatus 10 imaging be scanned to tumour, to calculate the centers such as determining tumor center's point 18 and system
The relative position of point 17, and Framework computing accelerator head 1 is controlled by radiotherapy system and surrounds contrast apparatus rotating shaft 13
1 deflection angle α of accelerator head at each point on rotary path.It can be counted by 18 exposure dose of tumor center's point that treatment needs
The distance D that accelerator head 1 arrives tumor center's point 18 is calculated, calculates each point on rotary path in the constant situation of the D that keeps at a distance
Locate the distance A between beat bracket 2 of head carrier 3.
Then, when radiotherapy starts, such as Fig. 6 A, first drive positioning device 9 according to radiotherapy system head beat
System control Framework computing head deflection angle driving accelerator head 1 surrounds 15 beat certain angle α of head yaw rotation axis, simultaneously
Head regulating device 5 sends out accelerator head 1 by the voluntarily distance A between beat bracket 2 of telescopic adjustment head carrier 3
The beacon alignment tumor center 18 and distance penetrated are D, reach the exposure dose of Treatment need.
It then, is that system isocenter point 17 turns round centainly when accelerator head 1 surrounds contrast apparatus rotating shaft 13 such as Fig. 6 B
Angle, θ, this position yaw angle that head beat drives positioning device 9 to go out according to radiotherapy system control Framework computing,
Drive accelerator head 1 around 15 beat of head yaw rotation axis to angle beta, while head elevation and subsidence regulating device 5 is by voluntarily
Telescopic adjustment head carrier 3 between beat bracket 2 at a distance from arrive B, make accelerator head 1 emit beacon alignment tumor center
18 and distance be D, reach the exposure dose of Treatment need.
In this way as described above, when accelerator head 1 carries out continuous rotation irradiation treatment around equipment isocenter point 17, machine
Head beat driving positioning device 9 drives accelerator head 1 to carry out beat according to real time position, while head regulating device 5 passes through
Voluntarily telescopic adjustment head carrier 3 between beat bracket 2 at a distance from, it is swollen with the beacon alignment for ensuring that accelerator head 1 emits
Tumor center 18 and distance are D, so realize the isocenter point irradiation treatment of radiotherapy.
Fig. 2 gives the specific embodiment of a head elevation and subsidence regulating device 5, is made of several elevating levers 51, lifting
Bar 51 is lead screw elevating lever.Elevating lever 51 includes: hollow lifting seat 511 and lifting column 512, and lifting column 512 is led by sliding
To the socket of set 513 in lifting seat 511,511 bottom of lifting seat is fixed with motor 515, and motor 515 is fixed on lifting seat 511
Bottom, motor 515 are connected with ball-screw 516 by yielding coupling 514, ball-screw spiral shell are arranged on ball-screw 516
Mother 518, ball-screw nut 518 are arranged with ball nut mount 517 outside, and ball nut mount 517 is fixed on the inner wall of lifting column 512
On.In this way, motor 515 can drive ball-screw nut 518 to move up and down when rotating by ball-screw 516, while ball spiral shell
Base 517 plays position-limiting action, lifting column 512 can be driven to move up and down when ball-screw nut 518 moves up and down in this way.
Sliding guide sleeve 513, rubbing when can reduce the gap and up and down motion between lifting column 512 and lifting seat 511
Power is wiped, driving motor power is reduced.Slide-and-guide material such as brass, nylon, POM or polytetrafluoro can be used in sliding guide sleeve 513
The production of the materials such as ethylene.
Human normal tissue hides radiation exposure
As shown in Figure 5, Figure 7, tumour 20 is carried out etc. when accelerator head 1 carries out continuous rotation around contrast apparatus rotating shaft 13
Center irradiation, if there is human normal tissue 19 in centainly revolution model on revolution exposure pathways of the accelerator head 1 to tumour 20
Enclose it is interior tumour 20 is blocked, tumour 20, such ray can be just irradiated to by causing ray to have to pass through human normal tissue 19
Damage will be generated to human normal tissue 19, therefore to avoid human normal tissue from being penetrated as far as possible when carrying out radiotherapy
Line irradiation.
When hide the continuous equal centers radiotherapy of human normal tissue 19, first have to through image contrast apparatus
10 pairs of 16 tumours 20 of patient and periphery human normal tissue 19 are scanned imaging, determine system isocenter point 17, tumour 20 with
And need to hide relative position and the appearance profile shape of the human normal tissue 19 of irradiation, it is controlled by radiotherapy system
Framework computing goes out to be irradiated the centers radiotherapy paths such as tumour 20, while according to the appearance profile of human normal tissue 19
The exposure pathways that accelerator head 1 hides human normal tissue 19 are cooked up, it is as follows that irradiation process is hidden in specific implementation.
Accelerator head 1 is rotated simultaneously around contrast apparatus rotating shaft 13, and beat bracket 2 is filled in beat carriage drive
It sets and surrounds the progress beat movement of beat bracket rotating shaft 14 under 6 driving, to drive the accelerator being fixed on beat bracket 2
Head 1 carries out beat movement around beat bracket rotating shaft 14, therefore accelerator head 1 is surrounding 13 He of contrast apparatus rotating shaft
Beat bracket rotating shaft 14 carries out the rotary motion of two dimensions.Hide people according to what radiotherapy system control host was cooked up
The path that body normal tissue 19 is planned can be controlled separately accelerator head 1 around contrast apparatus rotating shaft 13 and beat bracket
14 position of rotating shaft and speed can be so that accelerator head 1 be irradiated treatment along planning path, to hide human normal
Tissue 19.
Beat backing positions detection device
Further, such as Fig. 1, shown in Fig. 5, it is also equipped with beat backing positions detection device 7 in beat bracket 2, which can adopt
With high-precision rotary encoder or grating scale, beat bracket 2 can be fed back with real-time detection and carried out around beat bracket rotating shaft 14
Speed and position when revolution, and then can accurately control accelerator head 1 and accurately be irradiated treatment along planning path, simultaneously
When beat carriage drive device 6 breaks down can with and alarm and shutdown, guarantee the installation of therapeutic process.
Aligning device
Further, since beat bracket 2 is gantry support, mostly use two sides across installing type structure, since mechanical structure exists
There may be cumulative errors when being processed and being assembled, and will cause decentraction situation after the installation of 2 two sides of beat bracket, in this way may
The driving resistance that will increase beat carriage drive device 6 causes 2 two sides unbalance stress of beat bracket and torsional deformation, or even meeting
Influence the irradiation treatment precision of accelerator head 1.Therefore beat bracket aligning device 8 is devised in 2 two sides of beat bracket, such as
Shown in Fig. 1, Fig. 5.
The structure of aligning device 8 such as Fig. 3 A, shown in 3B, aligning device 8 includes: eccentric axle lock nut 22, eccentric shaft 23,
Bearing roller 24 and aligning hole 25；Aligning hole 25 is set on image contrast apparatus 10, and the center in aligning hole 25 is located at beat bracket
On rotating shaft 14, several roller bearings 24 are equipped in aligning hole 25, eccentric shaft 23 passes through beat bracket 2 and roller bearing 24 connects
It connects, is locked by eccentric axle lock nut 22.Adjusting device and image contrast apparatus if it is accelerator head is to match for second
Relationship is set, then aligning hole 25 is located on connector 29.
In use, unclamping 2 two sides of beat bracket first is fixed on the fixing screws 21 in contrast imaging equipment 10, unscrew partially
Mandrel locking nut 22, rotation adjustment 8 two sides eccentric shaft 23 of beat bracket aligning device drives bearing roller 24 in radiography respectively
It is deflected in the aligning hole 25 of imaging device, adjusts the 25 center overlapping of axles of aligning hole of beat bracket rotating shaft 14 and bracket,
After 2 two sides of beat bracket adjust coincidence with one heart simultaneously, eccentric axle lock nut 22 and 2 two sides fixing screws of beat bracket are locked
21。
Clump weight
Further, such as Fig. 8 A, the adjustment device of the embodiment of the present invention is additionally provided with clump weight 4, under beat bracket 2
End, it is corresponding with accelerator head 1.Due to the requirement of 1 functional structure of accelerator head, so its quality is very heavy, it is mounted on beat
2 one end of bracket will lead to beat carriage drive device 6 and drive discontinuity equalization shadow when being rotated along beat bracket rotating shaft 14
Beat bracket smoothness of operation is rung, therefore in order to guarantee to run smoothly, in the installation of 2 other end of beat bracket and accelerator head 1
The identical high density clump weight 4 of weight can make beat carriage drive device 6 drive stress equalization smooth running.
Meanwhile referring to Fig. 8 B, when carrying out radiotherapy, 1 emission beam 26 of accelerator head, beam 26 have one
Divide energy then can be to external exposure for tumour irradiation treatment rest part, it is therefore desirable to carry out shielding absorption to extra beam 26
To prevent the injury to other staff's equipment.As shown in Figure 6B, radiotherapy equipment is mounted in therapeutic room 28, when accelerator machine
First 1 around 13 rotary irradiation of contrast apparatus rotating shaft treat when, that is, beam 26 also around contrast apparatus rotating shaft 13 rotate, therefore
It needs to do the shielded layer i.e. main shield of one fixed width in corresponding 26 rotation portion of beam of therapeutic room 28 to shield absorption ray
Area 27.Since beam 26 energy comparison is high, thus main shield area need the thickness done very it is big could shield completely absorb it is extra
Ray, therefore will lead to and occupy 28 very large space of therapeutic room, and construction cost also will increase.And by another in beat bracket 2
One end installation and the comparable clump weight 4 of 1 weight of accelerator head, and clump weight 4 is made using high desnity metal material, energy
It is enough effectively to absorb shielding ray energy, so that energy is significantly decayed after beam 26 passes through breeding block 4, therefore main shield area 27
Thickness substantially reduce, to reach 28 space of Zeng Jiang therapeutic room, reduce construction cost.
To sum up, radiotherapy accelerator adjustment device provided in an embodiment of the present invention, the radiotherapy system for being guided by image,
Can solve existing product can only carry out single dimension radiotherapy problem.It specifically can solve because image contrast apparatus structure limits
Caused by tumour and equipment rotate integrally therapeutic community's decentraction problem, i.e., radiotherapy irradiation etc. central issues, while it is real
Show accelerator radioactive source to the various dimensions continuous rotation irradiation treatment of tumour, when there is normal human tissue to block tumour
It can carry out radioactive source beat and avoid irradiation to normal human tissue, shorten patient's radiotherapy time, increase radiotherapeutic effect.
Further, present invention design symmetrically holds one high density material clump weight of arrangement in accelerator head, has put acceleration to equilibrium
Device bracket both ends stress reduces the unbalanced problem of beat carriage drive power, while highdensity metal weights block can also block
A part of ray is absorbed, so that therapeutic room's main shield area shielded layer is thinned, increases therapeutic room space, therapeutic room is reduced and is constructed into
This.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (10)
1. a kind of accelerator adjusts device, the radiotherapy apparatus for the guidance of contrast imaging equipment, which is characterized in that the head tune
Engagement positions include head carrier, head elevation and subsidence regulating device and beat bracket,
Accelerator head and head beat driving positioning device are provided on the head carrier, the head beat driving is fixed
Position device can drive accelerator head to do revolution beat movement around axis, and can beat position be measured and be fed back；
The head elevation and subsidence regulating device is between head carrier and beat bracket, and can stretch adjustment head carrier up and down
Highly；
The beat bracket is gantry support, has beat bracket rotating shaft, and beat bracket is equipped with nutation driving device, can drive
Beat bracket is moved around beat bracket rotating shaft beat, to drive accelerator head also around the beat bracket rotating shaft beat；
The accelerator head adjustment device is directly connected across by the beat bracket in contrast imaging equipment two sides, or logical
Cross the outside that connector is set to the contrast imaging equipment.
2. accelerator according to claim 1 adjusts device, which is characterized in that beat bracket two sides further respectively have
Aligning device.
3. accelerator according to claim 2 adjusts device, which is characterized in that the aligning device includes: aligning hole, partially
Mandrel, roller bearing and eccentric axle lock nut；The aligning hole is set on the contrast imaging equipment or the connector, institute
The center for stating aligning hole is located on the beat bracket rotating shaft, and several roller bearings, the bias are equipped in the aligning hole
Axis passes through beat bracket and connect with the roller bearing, is locked by the eccentric axle lock nut.
4. accelerator according to claim 1 adjusts device, which is characterized in that be additionally provided with position inspection on the beat bracket
Survey device.
5. accelerator according to claim 4 adjusts device, which is characterized in that the position detecting device is rotary coding
Device or grating scale.
6. accelerator according to claim 1 adjusts device, which is characterized in that the head elevation and subsidence regulating device is by several
Lifter group is at the elevating lever is lead screw elevating lever.
7. accelerator according to claim 6 adjusts device, which is characterized in that the lead screw elevating lever includes: hollow
Lifting seat and lifting column, for lifting column by sliding guide sleeve socket in the lifting seat, lifting seat bottom is fixed with motor, electricity
Machine is connected with ball-screw by shaft coupling, and ball-screw nut is arranged on ball-screw, is arranged with outside ball-screw nut
Ball nut mount, and ball nut mount is fixed on the inner wall of the lifting column.
8. accelerator according to claim 6 adjusts device, which is characterized in that the head elevation and subsidence regulating device is by four
Elevating lever is constituted.
9. accelerator according to claim 1 adjusts device, which is characterized in that it further include clump weight, the clump weight position
In the lower section of beat bracket.
10. accelerator according to claim 9 adjusts device, which is characterized in that the clump weight is metal weights block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646062.4A CN109847198B (en) | 2018-12-29 | 2018-12-29 | Accelerator adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811646062.4A CN109847198B (en) | 2018-12-29 | 2018-12-29 | Accelerator adjusting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109847198A true CN109847198A (en) | 2019-06-07 |
| CN109847198B CN109847198B (en) | 2024-07-16 |
Family
ID=66893547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811646062.4A Active CN109847198B (en) | 2018-12-29 | 2018-12-29 | Accelerator adjusting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109847198B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701153A (en) * | 2020-06-23 | 2020-09-25 | 上海联影医疗科技有限公司 | Positioning adjusting mechanism, radiotherapy equipment and isocenter adjusting method thereof |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05214908A (en) * | 1992-01-31 | 1993-08-24 | Yamaha Motor Co Ltd | Initial tension adjusting tool for valve system |
| CN2252639Y (en) * | 1995-12-31 | 1997-04-23 | 宁博 | Radiotherapy lead mould bracket |
| EP1075855A1 (en) * | 1999-08-11 | 2001-02-14 | Jean Valentin | Device for stereotactic radiotherapy |
| CN1537657A (en) * | 2003-10-22 | 2004-10-20 | 高春平 | Radiotherapeutic apparatus in operation |
| CN201833134U (en) * | 2010-11-02 | 2011-05-18 | 补家武 | Guiding and supporting dual-purpose slide block mechanism for numerical control cutting machine |
| CN202427061U (en) * | 2011-12-21 | 2012-09-12 | 陈渝 | Tumor radiotherapy device capable of reducing field automatically |
| CN103071241A (en) * | 2011-10-25 | 2013-05-01 | 苏州雷泰医疗科技有限公司 | Stereotactic radiotherapeutic device |
| CN103517737A (en) * | 2011-01-20 | 2014-01-15 | 爱可瑞公司 | Radiation treatment delivery system with ring gantry |
| CN203570648U (en) * | 2013-12-03 | 2014-04-30 | 山东双轮股份有限公司 | Center-adjustable bearing body structure |
| CN105920746A (en) * | 2016-06-16 | 2016-09-07 | 四川大学 | Radiation therapy device |
| CN105920745A (en) * | 2016-06-16 | 2016-09-07 | 四川大学 | Radiation therapy system |
| CN106139419A (en) * | 2016-07-29 | 2016-11-23 | 中国原子能科学研究院 | For treating the rotary frame of tumor |
| CN205759156U (en) * | 2016-05-31 | 2016-12-07 | 林玲玲 | A kind of radiation locating support |
| CN107362464A (en) * | 2017-08-13 | 2017-11-21 | 吴大可 | Accurate Stereotactic Radiosurgery device |
| CN108310681A (en) * | 2018-03-09 | 2018-07-24 | 陈亮 | A kind of clinac and its control method |
| CN209662466U (en) * | 2018-12-29 | 2019-11-22 | 佛山瑞加图医疗科技有限公司 | A kind of accelerator adjustment device |
-
2018
- 2018-12-29 CN CN201811646062.4A patent/CN109847198B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05214908A (en) * | 1992-01-31 | 1993-08-24 | Yamaha Motor Co Ltd | Initial tension adjusting tool for valve system |
| CN2252639Y (en) * | 1995-12-31 | 1997-04-23 | 宁博 | Radiotherapy lead mould bracket |
| EP1075855A1 (en) * | 1999-08-11 | 2001-02-14 | Jean Valentin | Device for stereotactic radiotherapy |
| CN1537657A (en) * | 2003-10-22 | 2004-10-20 | 高春平 | Radiotherapeutic apparatus in operation |
| CN201833134U (en) * | 2010-11-02 | 2011-05-18 | 补家武 | Guiding and supporting dual-purpose slide block mechanism for numerical control cutting machine |
| CN103517737A (en) * | 2011-01-20 | 2014-01-15 | 爱可瑞公司 | Radiation treatment delivery system with ring gantry |
| CN103071241A (en) * | 2011-10-25 | 2013-05-01 | 苏州雷泰医疗科技有限公司 | Stereotactic radiotherapeutic device |
| CN202427061U (en) * | 2011-12-21 | 2012-09-12 | 陈渝 | Tumor radiotherapy device capable of reducing field automatically |
| CN203570648U (en) * | 2013-12-03 | 2014-04-30 | 山东双轮股份有限公司 | Center-adjustable bearing body structure |
| CN205759156U (en) * | 2016-05-31 | 2016-12-07 | 林玲玲 | A kind of radiation locating support |
| CN105920746A (en) * | 2016-06-16 | 2016-09-07 | 四川大学 | Radiation therapy device |
| CN105920745A (en) * | 2016-06-16 | 2016-09-07 | 四川大学 | Radiation therapy system |
| CN106139419A (en) * | 2016-07-29 | 2016-11-23 | 中国原子能科学研究院 | For treating the rotary frame of tumor |
| CN107362464A (en) * | 2017-08-13 | 2017-11-21 | 吴大可 | Accurate Stereotactic Radiosurgery device |
| CN108310681A (en) * | 2018-03-09 | 2018-07-24 | 陈亮 | A kind of clinac and its control method |
| CN209662466U (en) * | 2018-12-29 | 2019-11-22 | 佛山瑞加图医疗科技有限公司 | A kind of accelerator adjustment device |
Non-Patent Citations (1)
| Title |
|---|
| 杨志勇;王继平;袁红;陈传喜;赵德英;: "锥型束CT对鼻咽癌调强放射治疗患者摆位精度的影响", 医疗装备, no. 21, 15 November 2018 (2018-11-15) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111701153A (en) * | 2020-06-23 | 2020-09-25 | 上海联影医疗科技有限公司 | Positioning adjusting mechanism, radiotherapy equipment and isocenter adjusting method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109847198B (en) | 2024-07-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10773102B2 (en) | Radiotherapy and imaging apparatus | |
| US9694206B2 (en) | Radiotherapy and imaging apparatus | |
| US7526066B2 (en) | Radiation therapy system for treating breasts and extremities | |
| US7564945B2 (en) | System including computed tomography device for image guided treatment | |
| US7519149B2 (en) | Small field intensity modulated radiation therapy machine | |
| US10188878B2 (en) | Small beam area, mid-voltage radiotherapy system with reduced skin dose, reduced scatter around the treatment volume, and improved overall accuracy | |
| CN110382049A (en) | Radiotherapy system and method | |
| US10500420B2 (en) | Small beam area, mid-voltage radiotherapy system with reduced skin dose, reduced scatter around the treatment volume, and improved overall accuracy | |
| CN105916555A (en) | Method and system for stereotactic intensity-modulated arc therapy | |
| US20150352373A1 (en) | An apparatus to deliver conformal radiotherapy using external beam cobalt 60 | |
| CN209662466U (en) | A kind of accelerator adjustment device | |
| US7418080B2 (en) | Support and radiation therapy system | |
| EP3583981A1 (en) | Photon emission detection device and boron neutron capture therapy system having same | |
| CN109847198A (en) | A kind of accelerator adjustment device | |
| CN209645668U (en) | A kind of accelerator beat bracket | |
| CN209645671U (en) | Accelerator head liftable regulating device and radiotherapy apparatus | |
| Steinke et al. | Technological approaches to in-room CBCT imaging | |
| CN109646819B (en) | Deflection bracket of accelerator | |
| Chung et al. | Stereotactic Radiosurgery | |
| EP3482401B1 (en) | Radiation delivery devices | |
| CN108014428A (en) | A kind of radiotherapy system of guide of magnetic resonant image | |
| JP2014000210A (en) | Radiotherapy system | |
| Meer et al. | Gantries and dose delivery systems | |
| Smith et al. | Modern radiation treatment planning and delivery—from Röntgen to real time | |
| CN219896815U (en) | Radiotherapy equipment and radiotherapy system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |