CN109303983B - Medical accelerator treatment bed - Google Patents
Medical accelerator treatment bed Download PDFInfo
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- CN109303983B CN109303983B CN201811265531.8A CN201811265531A CN109303983B CN 109303983 B CN109303983 B CN 109303983B CN 201811265531 A CN201811265531 A CN 201811265531A CN 109303983 B CN109303983 B CN 109303983B
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- 230000007246 mechanism Effects 0.000 claims abstract description 84
- 238000006073 displacement reaction Methods 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 6
- 238000005259 measurement Methods 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims description 3
- 238000012937 correction Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 description 5
- 238000001959 radiotherapy Methods 0.000 description 5
- 230000001225 therapeutic effect Effects 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- 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
- A61N5/1001—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy using radiation sources introduced into or applied onto the body; brachytherapy
-
- 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
- A61N2005/1092—Details
- A61N2005/1097—Means for immobilizing the patient
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention provides a medical accelerator treatment bed, comprising: the bed board is used for bearing a patient; the transverse driving mechanism, the longitudinal driving mechanism and the vertical lifting mechanism are respectively used for driving the bed board to move forwards and backwards, leftwards and rightwards and upwards and downwards; the longitudinal side-turning fine tuning mechanism is used for driving the bed board to longitudinally rotationally fine-tune in a left-right isocentric manner; and the transverse pitching fine tuning mechanism is used for driving the bed board to rotationally fine-tune in the transverse front-back isocenter. The medical accelerator treatment bed can realize multidimensional movement, rollover and pitching fine adjustment correction and accurate positioning, and has the advantages of simple structure, small whole machine volume and stable operation.
Description
Technical Field
The invention relates to the field of radiotherapy apparatuses, in particular to a medical accelerator treatment bed.
Background
With the popularization of radiation therapy, doctors can accurately position diseased parts of patients in the radiation therapy process, and corresponding radiation therapy is carried out on focus parts through provided three-dimensional images, so that the damage to other normal tissues is reduced.
The couch may achieve four-dimensional motion in XYZ directions and revolution about an isocenter by a three-dimensional couch such as a medical accelerator couch lift system with application number 2015111586. X, and a radiation treatment system with application number 200520119822.8.
The cantilever structure of application No. 2015111586. X can not be corrected due to the uneven stress of the bed board left and right, which results in the elastic deformation of the bed board left and right at the isocenter.
And application number 200520119822.8 is a three-dimensional treatment couch of a radiation treatment system,
the Chinese patent with application number 200520119822.8 discloses a three-dimensional therapeutic bed of a radiation therapy system, wherein a lifting mechanism, a transverse moving mechanism and a longitudinal moving mechanism are arranged between a base and the therapeutic bed, the transverse moving mechanism is a movable bracket arranged on the base, the lifting mechanism is arranged on two supporting arms of the bracket, and a linear moving mechanism connected with the therapeutic bed is arranged on the lifting mechanism. Because the bracket of the transverse moving mechanism of the treatment bed is arranged on the base, the lifting mechanisms are supported on two sides of the treatment bed through the linear moving mechanisms, and the elastic deformation caused by uneven stress on the left and right sides of the bed plate can be adjusted through adjusting the lifting amplitude difference of the lifting mechanisms on the two sides, but when the bed plate moves forwards and backwards, the error caused by the elastic deformation of the bed plate at the isocenter can not be corrected due to the rigidity problem of the bed plate, and the four-degree-of-freedom bed can not be corrected, so that improvement is urgently needed.
Disclosure of Invention
In order to solve the problems, the invention provides the medical accelerator treatment bed which can realize multidimensional movement, realize rollover and pitching fine tuning correction and realize accurate positioning, and has the beneficial effects of simple structure, small whole machine volume and stable operation.
In order to achieve the technical purpose, the technical scheme of the invention is as follows: a medical accelerator treatment couch, comprising:
the bed board is used for bearing a patient;
the transverse driving mechanism, the longitudinal driving mechanism and the vertical lifting mechanism are respectively used for driving the bed board to move forwards and backwards, leftwards and rightwards and upwards and downwards;
the longitudinal side-turning fine tuning mechanism is used for driving the bed board to longitudinally rotationally fine-tune in a left-right isocentric manner;
and the transverse pitching fine tuning mechanism is used for driving the bed board to rotationally fine-tune in the transverse front-back isocenter.
Further, the horizontal driving mechanism is connected to the longitudinal driving mechanism in a sliding manner, the longitudinal driving mechanism is connected to the vertical lifting mechanism in a sliding manner, and the bed board is fixed to the horizontal driving structure.
Further, the vertical fine tuning that turns on one's side set up in the bed board with between the horizontal actuating mechanism, vertical fine tuning that turns on one's side includes: the eccentric wheel comprises a connecting plate, a rotating shaft and an eccentric wheel;
the bed board is fixed on the connecting board, one side of the connecting board is rotationally arranged in the transverse driving structure through the connecting piece,
the rotating shaft is transversely arranged in the transverse driving structure and positioned below the other side of the connecting plate, and the connecting plate is fixedly provided with an eccentric wheel in a penetrating way and is used for driving the connecting plate to rotate in a side turning way relative to the transverse driving mechanism.
Further, the vertical lift mechanism includes:
the double-scissors lifting device is used for driving the bed board to move up and down through the scissors action;
the guide rail frame comprises guide plates at two sides, a front connecting plate and a rear connecting plate, wherein the guide plates are provided with transverse grooves and fixing holes, and the upper ends of the double-shear fork lifting devices are respectively clamped in the transverse grooves and the fixing holes through rolling bearings.
Further, the longitudinal driving mechanism comprises a longitudinal sliding block and a fixed plate, and the longitudinal sliding block is connected to the fixed plate in a sliding manner;
the lateral pitch trimmer mechanism comprises;
the pitching bottom plate is fixed on the fixing plate, and the guide rail frame is sleeved on the pitching bottom plate;
the guide connecting plate is provided with a chute, and two ends of the guide connecting plate are clamped in the chute through idler wheels;
the linear driving device is fixed between the pitching bottom plate and the guide connecting plate and used for driving the guide connecting plate to move along the chute so as to realize the front-back isocentric rotation fine adjustment of the bed plate.
Further, the linear driving device includes: the rotary motor, the screw rod, the fixed block and the sliding shell;
the fixed block is fixed on the guide connecting plate, the rotating motor drives the screw rod to rotate in the fixed block, meanwhile, the fixed block is driven to move relative to the sliding shell, and the pitching bottom plate is fixed on the sliding shell.
Further, the device also comprises a displacement sensor for measuring the displacement of the fixed block relative to the sliding shell.
Preferably, the displacement sensor comprises a baffle plate and an inverted U-shaped photoelectric sensor;
the baffle is fixed beside the fixed block, and the inverted U-shaped photoelectric sensor is fixed beside the sliding shell; the relative displacement measurement of the fixed block relative to the sliding shell is realized by sliding the inverted U-shaped photoelectric sensor through the baffle plate.
Preferably, a guide rail and a chute are provided and are respectively fixed on the guide connecting plate and under the pitching bottom plate.
Preferably, the transverse driving mechanism comprises a first transverse sliding block and a second transverse sliding block; the first transverse sliding block is slidably clamped in the second transverse sliding block.
The invention has the beneficial effects that:
1) The transverse driving mechanism, the longitudinal driving mechanism and the vertical lifting mechanism which are mutually staggered realize the movement of the bed board in the up-down, left-right, front-back directions, and the whole machine has small volume;
2) According to the longitudinal side-turning fine-tuning mechanism, the eccentric wheels are used for driving the connecting plates to rotate in a side-turning mode relative to the transverse driving mechanism, namely, the bed board is driven to rotate in a longitudinal direction in a left-right isocentric mode, so that left-right side deformation correction caused by uneven stress of the bed board is realized, and the positioning is greatly facilitated.
3) The transverse pitching fine tuning mechanism adopts the implementation mode of the chute and the branch line driving loader, utilizes the space of the existing four-degree-of-freedom treatment bed, does not increase the design height of the bed, arranges the linear driving device in the double-scissor lifting device, utilizes the chute to realize the head-on action of the bed board, and corrects the front-back side deformation of the bed board caused by the rigidity or uneven stress of the bed board.
In conclusion, the medical accelerator treatment bed can realize multidimensional movement, rollover and pitching fine adjustment and correction, and accurate positioning, and has the advantages of simple structure, small whole machine size and stable operation.
Drawings
FIG. 1 is a schematic view of the overall structure of a medical accelerator treatment couch of the present invention;
FIG. 2 is a schematic view of the explosive structure of the medical accelerator treatment couch of the present invention;
FIG. 3 is a schematic view of the overall structure of the lateral and longitudinal drive mechanisms of the present invention;
FIG. 4 is a schematic view of the mounting structure of the longitudinal rollover fine tuning mechanism of the present invention in a first lateral slide;
FIG. 5 is a schematic view of the overall structure of the longitudinal drive mechanism of the present invention;
FIG. 6 is a schematic view of the overall structure of the fine pitch trimmer of the present invention;
FIG. 7 is a schematic view of the mounting structure of the linear drive and the guide connection plate in the guide frame of the present invention;
fig. 8 is a schematic structural view of the linear driving apparatus of the present invention.
Detailed Description
The technical scheme of the present invention will be clearly and completely described below.
It should be noted that, in the present invention, "front", "rear", "transverse" are x-directions with respect to the three-dimensional coordinates in fig. 1, "left", "right", "longitudinal" are y-directions with respect to the three-dimensional coordinates in fig. 1, and "up", "down", "vertical" are z-directions with respect to the three-dimensional coordinates in fig. 1; the above directional terms are for explaining the installation and operation principle of the therapeutic bed of the present invention, and are not to be construed as limiting the present invention.
A medical accelerator treatment couch, as shown in fig. 1 and 2, comprising:
a bed board 1 for carrying a patient;
the transverse driving mechanism, the longitudinal driving mechanism 2 and the vertical lifting mechanism 4 are respectively used for driving the bed board to move forwards and backwards, leftwards and rightwards and upwards and downwards;
the longitudinal side-turning fine-tuning mechanism is used for driving the bed board to rotate and fine-tune at the left and right isocenter in the longitudinal direction, so that the left and right side deformation correction of the bed board caused by uneven stress is realized.
And the transverse pitching fine tuning mechanism 3 is used for driving the bed board to rotate and fine tune in the transverse front and back isocentric mode, so that front and back side deformation correction of the bed board caused by self rigidity or uneven stress is realized.
Further, as shown in fig. 3, the transverse driving mechanism is slidably connected to the longitudinal driving mechanism, the longitudinal driving mechanism is slidably connected to the vertical lifting mechanism 4, and the bed board is fixed to the transverse driving structure. The transverse driving mechanism, the longitudinal driving mechanism 2 and the vertical lifting mechanism 4 which are arranged in a staggered way realize the movement of the bed board in the x, y and z directions of the coordinates of figure 1.
Further, as shown in fig. 4, the longitudinal rollover fine adjustment mechanism is disposed between the bed board and the transverse driving mechanism, and the longitudinal rollover fine adjustment mechanism includes: the connecting plate 205, the rotating shaft 210 and the eccentric wheel 209;
the bed board 1 is fixed on a connecting board, one side of the connecting board is rotatably arranged in the transverse driving structure through a connecting piece 208,
the rotating shaft 210 is transversely arranged in the transverse driving structure and positioned below the other side of the connecting plate 205, and the connecting plate is fixedly penetrated with the eccentric wheel 209 for driving the connecting plate to rotate laterally relative to the transverse driving mechanism, namely, driving the bed board to rotate and finely adjust longitudinally at the left and right isocenter, thereby realizing the correction of left and right side deformation of the bed board caused by uneven stress and greatly facilitating the positioning. It should be noted that, the rotating shaft may be driven by the rotating shaft or by hand, and besides the rotating shaft and the eccentric wheel, a jacking motor, a jacking cylinder and other people in the field that can jack and support the connecting plate at one side may simply replace the jacking mechanism, which all belong to the protection scope of the present invention.
Preferably, as shown in fig. 3, the lateral driving mechanism comprises a first lateral sliding block 204 and a second lateral sliding block 203; the first transverse slider 204 is slidably engaged with the second transverse slider. In some embodiments of the present invention, preferably, the second lateral sliding block 203, the longitudinal sliding block 202 and the pitch bottom plate 301 are all U-shaped, and by means of the U-shaped design, the second lateral sliding block, the longitudinal sliding block and the pitch bottom plate are clamped with each other, so that the overall volume is greatly reduced, and the cross movement between each other is not affected. Meanwhile, compared with the traditional integrated transverse driving mechanism, the two-stage driving mechanism formed by the first transverse sliding block 204 and the second transverse sliding block 203 has the advantages that the structure and the operation stability of the whole machine are greatly improved.
Preferably, a groove is arranged in the movement of the longitudinal sliding block 202, a first driving motor 207 is arranged in the groove, and the first driving motor 207 drives the transverse driving mechanism to move relative to the longitudinal sliding block 202; similarly, a hole is formed in the pitch floor 301, and a second driving motor 206 is disposed in the hole and drives the longitudinal slider 202 to move along the fixing plate 201. The driving modes of the first driving motor 207 and the second driving motor 206 may be gear driving, synchronous belt driving, and the like. The design of the grooves and the holes provides the accommodating space for the first driving motor 207 and the second driving motor 206, and meanwhile, the whole volume is not affected.
Further, the vertical lift mechanism includes:
the double-scissors lifting device is used for driving the bed board to move up and down through the scissors action;
the guide rail frame, as shown in fig. 6 and 7, comprises two side guide plates 305 and front and rear connecting plates 309, wherein the guide plates are provided with transverse grooves 306 and fixing holes 307, the upper ends of the double-scissor lifting device are respectively clamped in the transverse grooves and the fixing holes through rolling bearings, and the design of the transverse grooves provides shearing action space.
Further, the longitudinal driving mechanism comprises a longitudinal sliding block 202 and a fixed plate, and the longitudinal sliding block is slidingly connected to the fixed plate 201;
the lateral pitch trimmer mechanism comprises;
the pitching bottom plate 301, the fixed plate is fixed on the pitching bottom plate, and the guide rail frame is sleeved on the pitching bottom plate;
the guide connection plate 303 is provided with a chute 308, and two ends of the guide connection plate 303 are clamped in the chute 308 through idler wheels 313;
the linear driving device is fixed between the pitching bottom plate 301 and the guiding connecting plate 303 and is used for driving the guiding connecting plate 303 to move along the chute so as to realize the front-back isocentric rotation fine adjustment of the bed plate. The embodiment of the chute and the branch line driving machine is adopted, the space of the existing four-degree-of-freedom treatment bed is utilized, the design height of the bed is not increased, the linear driving device is arranged in the double-scissor lifting device, the chute is utilized to realize the head action of the bed board, and the deformation of the front side and the back side of the bed board caused by the uneven rigidity or stress of the bed board is corrected. To further accommodate different types of treatment couch, the mechanism may also be used in a single shear treatment couch or the like.
Further, as shown in fig. 7 and 8, the linear driving apparatus includes: a rotating motor 302, a screw, a fixed block 314, and a sliding housing 304;
the fixed block 314 is fixed on the guide connection plate 303, the rotating motor drives the screw rod to rotate in the fixed block, and meanwhile drives the fixed block to move relative to the sliding shell, and the pitching bottom plate is fixed on the sliding shell.
Further, the device also comprises a displacement sensor for measuring the displacement of the fixed block relative to the sliding shell and further determining the pitching angle of the bed board.
Preferably, the displacement sensor comprises a baffle 311 and an inverted U-shaped photoelectric sensor 312;
the baffle is fixed beside the fixed block, and the inverted U-shaped photoelectric sensor is fixed beside the sliding shell; the relative displacement measurement of the fixed block relative to the sliding shell is realized by sliding the inverted U-shaped photoelectric sensor through the baffle plate.
Preferably, a guide rail and a chute are provided, which are fixed to the guide connection plate and under the pitching bottom plate, respectively, to provide guidance for the relative displacement of the guide connection plate 303 and the connection plate 205.
It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit of the invention.
Claims (6)
1. A medical accelerator treatment couch, comprising:
the bed board is used for bearing a patient;
the transverse driving mechanism, the longitudinal driving mechanism and the vertical lifting mechanism are respectively used for driving the bed board to move forwards and backwards, leftwards and rightwards and upwards and downwards;
the longitudinal side-turning fine tuning mechanism is used for driving the bed board to longitudinally rotationally fine-tune in a left-right isocentric manner;
the transverse pitching fine tuning mechanism is used for driving the bed board to rotationally fine-tune in the transverse front-back isocentric mode; wherein,
the longitudinal side-turning fine tuning mechanism is arranged between the bed board and the transverse driving mechanism, and comprises: the eccentric wheel comprises a connecting plate, a rotating shaft and an eccentric wheel;
the bed board is fixed on a connecting board, one side of the connecting board is rotationally arranged in the transverse driving mechanism through a connecting piece,
the rotating shaft is transversely arranged in the transverse driving mechanism and positioned below the other side of the connecting plate, and the connecting plate is fixedly penetrated with an eccentric wheel and used for driving the connecting plate to rotate in a side turning manner relative to the transverse driving mechanism;
the vertical lifting mechanism comprises:
the double-scissors lifting device is used for driving the bed board to move up and down through the scissors action;
the guide rail frame comprises guide plates at two sides and a front connecting plate and a rear connecting plate, the guide plates are provided with transverse grooves and fixing holes, and the upper ends of the double-scissor lifting devices are respectively clamped in the transverse grooves and the fixing holes through rolling bearings;
the longitudinal driving mechanism comprises a longitudinal sliding block and a fixed plate, and the longitudinal sliding block is connected to the fixed plate in a sliding manner;
the lateral pitch trimmer mechanism comprises;
the pitching bottom plate is fixed on the fixing plate, and the guide rail frame is sleeved on the pitching bottom plate;
the guide connecting plate is provided with a chute, and two ends of the guide connecting plate are clamped in the chute through idler wheels;
the linear driving device is fixed between the pitching bottom plate and the guide connecting plate and is used for driving the guide connecting plate to move along the chute so as to realize the front-back isocentric rotation fine adjustment of the bed plate;
the linear driving device includes: the rotary motor, the screw rod, the fixed block and the sliding shell;
the fixed block is fixed on the guide connecting plate, the rotating motor drives the screw rod to rotate in the fixed block, meanwhile, the fixed block is driven to move relative to the sliding shell, and the pitching bottom plate is fixed on the sliding shell.
2. The medical accelerator treatment couch of claim 1,
the horizontal driving mechanism is connected to the longitudinal driving mechanism in a sliding manner, the longitudinal driving mechanism is connected to the vertical lifting mechanism in a sliding manner, and the bed board is fixed to the horizontal driving mechanism.
3. The medical accelerator treatment bed according to claim 1, further comprising a displacement sensor for measuring displacement of the fixed mass relative to the sliding housing.
4. The medical accelerator treatment couch of claim 3, wherein the displacement sensor comprises a baffle, an inverted U-shaped photoelectric sensor;
the baffle is fixed beside the fixed block, and the inverted U-shaped photoelectric sensor is fixed beside the sliding shell; the relative displacement measurement of the fixed block relative to the sliding shell is realized by sliding the inverted U-shaped photoelectric sensor through the baffle plate.
5. The medical accelerator treatment couch of claim 1, wherein a guide rail and a chute are provided, respectively secured to the guide web and under the pitch floor.
6. The medical accelerator treatment bed according to claim 2, wherein the lateral drive mechanism comprises a first lateral slide, a second lateral slide; the first transverse sliding block is slidably clamped in the second transverse sliding block.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265531.8A CN109303983B (en) | 2018-10-29 | 2018-10-29 | Medical accelerator treatment bed |
| PCT/CN2019/113517 WO2020088381A1 (en) | 2018-10-29 | 2019-10-28 | Medical accelerator treatment table |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811265531.8A CN109303983B (en) | 2018-10-29 | 2018-10-29 | Medical accelerator treatment bed |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109303983A CN109303983A (en) | 2019-02-05 |
| CN109303983B true CN109303983B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811265531.8A Active CN109303983B (en) | 2018-10-29 | 2018-10-29 | Medical accelerator treatment bed |
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| CN (1) | CN109303983B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020088381A1 (en) * | 2018-10-29 | 2020-05-07 | 苏州雷泰医疗科技有限公司 | Medical accelerator treatment table |
| CN110393856B (en) * | 2019-08-16 | 2024-03-19 | 山东新华医疗器械股份有限公司 | Therapeutic bed for radiotherapy |
| WO2021087681A1 (en) * | 2019-11-04 | 2021-05-14 | 新里程医用加速器(无锡)有限公司 | Cone-beam-based helical volumetric modulated radiation therapy device and image system |
| CN111230925B (en) * | 2020-03-10 | 2023-04-11 | 山东新华医疗器械股份有限公司 | Angle type CBCT image flat plate mechanical arm |
| CN112545816A (en) * | 2020-12-24 | 2021-03-26 | 重庆海扶医疗科技股份有限公司 | Medical bed for patient transfer and treatment and method of use |
| CN116747462B (en) * | 2023-08-21 | 2023-10-20 | 智维精准(北京)医疗科技有限公司 | Therapeutic bed detection and calibration method |
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| WO2016061877A1 (en) * | 2014-10-20 | 2016-04-28 | 苏州大学张家港工业技术研究院 | Radiation therapy system |
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Patent Citations (5)
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|---|---|---|---|---|
| CN102389619A (en) * | 2011-06-23 | 2012-03-28 | 山东新华医疗器械股份有限公司 | Horizontal fine adjustment mechanism for bed surface of radiotherapy equipment |
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