CN113209500A - Superconductive ion rotating frame - Google Patents
Superconductive ion rotating frame Download PDFInfo
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- CN113209500A CN113209500A CN202110638022.0A CN202110638022A CN113209500A CN 113209500 A CN113209500 A CN 113209500A CN 202110638022 A CN202110638022 A CN 202110638022A CN 113209500 A CN113209500 A CN 113209500A
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- indexing
- barrel
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- rolling
- ring
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- 230000007246 mechanism Effects 0.000 claims abstract description 59
- 238000005096 rolling process Methods 0.000 claims abstract description 26
- 230000005540 biological transmission Effects 0.000 abstract description 7
- 150000002500 ions Chemical class 0.000 description 20
- 206010028980 Neoplasm Diseases 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000010884 ion-beam technique Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000001959 radiotherapy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
- 238000002665 ion therapy Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
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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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
-
- 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
- A61N5/1048—Monitoring, verifying, controlling systems and methods
- A61N5/1064—Monitoring, verifying, controlling systems and methods for adjusting radiation treatment in response to monitoring
- A61N5/1069—Target adjustment, e.g. moving the patient support
-
- 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
- A61N2005/1085—X-ray therapy; Gamma-ray therapy; Particle-irradiation therapy characterised by the type of particles applied to the patient
- A61N2005/1087—Ions; Protons
Abstract
The invention relates to a superconducting ion rotating frame, comprising: the barrel is horizontally arranged, and two ends of the barrel are provided with support rings; the rolling support mechanisms are arranged at the bottom of the barrel and form a rolling friction pair with a support ring of the barrel; the driving mechanism is connected with the at least one rolling supporting mechanism and is configured to drive the barrel to rotate along the circumferential direction through the rolling supporting mechanism; the indexing ring is arranged in one of the support rings and is fixedly connected with the support ring, and a plurality of indexing holes are uniformly processed on the indexing ring along the circumferential direction; a positioning mechanism configured to position the cartridge in a set position by inserting the indexing holes of the indexing ring. The invention utilizes the rolling support mechanism and the indexing rings arranged on the two end surfaces of the cylinder body to form a rolling friction pair, simultaneously utilizes the matching action of the indexing holes and the positioning mechanism, and utilizes friction transmission to realize the rotation and accurate positioning of the rotary frame under fixed indexing, and the invention is easy to realize and has low cost.
Description
Technical Field
The invention relates to a superconducting ion device, in particular to a superconducting ion rotating frame.
Background
In recent years, ion beam radiotherapy has been increasingly applied in the field of tumor treatment, which can precisely control the beam energy and the irradiation position, and form a bragg peak (bragg peak) at the end of the range by using the maximum peak of the dose formed by ions entering the human body, so that high-dose particles are intensively irradiated in the target region of the target tumor, and simultaneously, the irradiation dose on normal tissues and normal organs around the target tumor is reduced to the minimum, thereby providing more conformal dose distribution than conventional ray radiotherapy, improving the treatment effect of the tumor, and having less side effects.
Currently, ion therapy devices mainly include: an ion accelerator for providing a suitable ion beam to the treatment terminal; the beam transmission system is used for providing a channel for accelerating and conveying ions; the therapeutic head is used for irradiating beam current meeting certain uniformity and symmetry requirements to a human body, and limiting the beam current in a certain area to obtain radiation fields with different sizes, shapes and angles, which are clinically required. Generally, the treatment head is divided into a fixed treatment head and a rotating frame (Gantry), the fixed treatment head can provide beam current with fixed angles, such as 0 degrees, 45 degrees and 90 degrees, and beam current positioning can be well realized; compared with the rotary rack, the rotary rack can realize 360-degree rotation of beam current, can irradiate the patient for multiple angles and multiple times, and can irradiate the tumor from multiple directions, so that the treatment effect is improved, the radiation damage of the patient is reduced, and the tumor can be accurately positioned and treated in any direction.
The rotating frame bears large-scale components such as beam current transportation lines, treatment heads, counter weights and the like including deflection magnets, focusing magnets and the like, so that the rotating frame is large in size and weight, meanwhile, in order to achieve accurate positioning and treatment of tumors, the rotating frame has very high requirements on machining accuracy, installation accuracy, movement accuracy and positioning accuracy, and the high requirements also enable the rotating frame to be large in research and development difficulty and expensive in manufacturing cost. The popularization of the ion rotating frame is restricted.
Disclosure of Invention
In view of the above problems, it is an object of the present invention to provide a superconducting ion rotating gantry with fixed indexing to achieve easy processing and installation, simple and reliable positioning, and reduced manufacturing costs.
In order to achieve the purpose, the invention adopts the following technical scheme: a superconducting ion rotating gantry comprising: the cylinder body is horizontally arranged, and two ends of the cylinder body are provided with support rings; the rolling support mechanisms are arranged at the bottom of the barrel and form a rolling friction pair with a support ring of the barrel; the driving mechanism is connected with at least one rolling supporting mechanism and is configured to drive the cylinder to rotate along the circumferential direction through the rolling supporting mechanism; the indexing ring is arranged in one of the support rings and is fixedly connected with the support ring, and a plurality of indexing holes are uniformly processed on the indexing ring along the circumferential direction; a positioning mechanism configured to position the cartridge in a set position by inserting the indexing holes of the indexing ring.
The superconducting ion rotating gantry preferably includes: a U-shaped support base; the main supporting wheel is rotatably connected to the U-shaped supporting base through a supporting shaft; one end of each of the two auxiliary supporting plates is hinged with the supporting shaft; and the two auxiliary supporting wheels are respectively and rotatably connected to the other ends of the two auxiliary supporting plates through auxiliary shafts, and the two auxiliary supporting wheels and the main supporting wheel are arranged in a triangular shape.
Preferably, the main supporting wheel and the auxiliary supporting wheel are both of a structure with a convex middle part and a concave two sides, and the peripheral surface of the supporting ring is of a structure with a concave middle part and a convex two sides matched with the main supporting wheel and the auxiliary supporting wheel.
The superconducting ion rotating gantry preferably comprises: the driving rod is fixed on a building or other fixed objects; the positioning pin shaft is hinged at the action end of the driving rod; and the control elements are respectively arranged at the indexing holes of the indexing ring and are electrically connected with the driving rod and the driving mechanism.
The superconducting ion rotating rack preferably further comprises a support frame arranged on the lower portion of the U-shaped support base, the bottom of the support frame is fixed to a building, the upper portion of the support frame is connected with the U-shaped support base through a bolt, and a strip-shaped hole extending along the radial direction of the barrel is formed in the U-shaped support base.
The superconducting ion rotating frame preferably further comprises a counterweight mechanism connected with the barrel and used for balancing when the barrel rotates.
Preferably, the indexing hole is a through hole extending along the axial direction of the cylinder, and the positioning pin is arranged in a cylinder shape capable of being matched with the positioning pin, and simultaneously fixes the positioning mechanism along the axial direction of the cylinder.
Preferably, the indexing hole is a square groove extending along the radial direction of the cylinder, and the positioning pin shaft is arranged in a cuboid shape capable of being matched with the positioning pin shaft, and simultaneously fixes the positioning mechanism along the radial direction of the cylinder.
Due to the adoption of the technical scheme, the invention has the following advantages: the invention utilizes the rolling support mechanism and the indexing rings arranged on the two end surfaces of the cylinder body to form a rolling friction pair, simultaneously utilizes the matching action of the indexing holes and the positioning mechanism, and utilizes friction transmission to realize the rotation and accurate positioning of the rotary frame under fixed indexing, and the invention is easy to realize and has low cost.
Drawings
FIG. 1 is an axial view of a superconducting ion rotating gantry according to an embodiment of the present invention;
fig. 2 is a front view of the superconducting ion rotating gantry according to the embodiment of the present invention;
fig. 3 is a side view of a superconducting ion rotating gantry provided in accordance with this embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an index ring according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a rolling support mechanism according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a positioning mechanism according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a square groove indexing ring according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the system or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1 to 4, an embodiment of the present invention provides a superconducting ion rotating gantry, including: the barrel body 1 is horizontally arranged, and two ends of the barrel body 1 are provided with support rings 11; at least two rolling support mechanisms 2 (four in the embodiment) are arranged at the bottom of the cylinder 1 and form a rolling friction pair with a support ring 11 of the cylinder 1; the driving mechanism 3 is connected with the at least one rolling supporting mechanism 2, and the driving mechanism 3 is configured to drive the cylinder 1 to rotate along the circumferential direction through the rolling supporting mechanism 2; the indexing ring 4 is arranged in one of the support rings 11 and is fixedly connected with the support ring, and a plurality of indexing holes 41 are uniformly processed on the indexing ring 4 along the circumferential direction; and a positioning mechanism 5 configured to position the cylinder 1 at a set position by inserting the index hole 41 of the index ring 4.
In the above embodiment, preferably, as shown in fig. 5, the rolling support mechanism 2 includes: a U-shaped support base 21; the main supporting wheel 22 is rotatably connected to the U-shaped supporting base 21 through a supporting shaft 23; one end of each of the two auxiliary support plates 24 is hinged with the support shaft 23; and the two auxiliary supporting wheels 25 are respectively and rotatably connected to the other ends of the two groups of auxiliary supporting plates 24 through auxiliary shafts 26, and the two auxiliary supporting wheels 25 and the main supporting wheel 22 are arranged in a triangular shape. Thereby, the main support wheel 22 rotates about the support shaft 23, and the auxiliary support wheel 25 rotates about the auxiliary shaft 26; the 2 auxiliary support wheels 25 and the auxiliary shaft 26 and the two sets of auxiliary support plates 24 are rotatable within a certain angle around the support shaft 23. When the barrel 1 is placed on the four supporting mechanisms 2, the main supporting wheel 22 plays a supporting role, and the auxiliary supporting wheel 25 can automatically center and align and finally contact with the supporting ring 11 on the end face of the barrel 1 to play an auxiliary supporting role; meanwhile, at least 1 driving mechanism 3 is arranged to be connected with the main supporting wheel 22 of the supporting mechanism 2 to form a driving wheel, and the driving wheel and the supporting ring 11 are in friction transmission, so that the whole barrel 1 is driven to rotate on the supporting mechanism 2 along the circumferential direction.
In the above embodiment, preferably, the main supporting wheel 22 and the auxiliary supporting wheel 25 are both of a structure with a convex middle part and a concave two sides, and the outer peripheral surface of the supporting ring 11 is of a structure with a concave middle part and a convex two sides which are matched with the main supporting wheel 22 and the auxiliary supporting wheel 25, so that the friction transmission and the axial positioning can be achieved, and the installation of the cylinder 1 is facilitated.
In the above embodiment, preferably, as shown in fig. 6, the positioning mechanism 5 includes: a drive rod 51 fixed to a building or other fixed object; a positioning pin 52 hinged at the action end of the driving rod 51; and a plurality of control members (not shown) respectively installed at the respective indexing holes 41 of the indexing ring 4 and electrically connected to the drive rod 51 and the drive mechanism 3. Therefore, when the cylinder 1 rotates to the set position, the control element outputs a control signal, the driving mechanism 3 stops working after receiving the control signal, meanwhile, the driving rod 51 starts to act after receiving the control signal, and the driving rod 51 pushes the positioning pin 52 to move, so that the positioning pin enters the indexing hole 41 of the indexing ring 4, and the cylinder 1 is positioned at the set position. In this embodiment, the driving rod 51 may be an electric push rod, a hydraulic cylinder, a pneumatic cylinder, or other existing products, and the control element may be an optoelectronic switch, a proximity switch, a counter, or other components.
In the above embodiment, preferably, as shown in fig. 1 to fig. 3, the superconducting ion rotating gantry further includes a support frame 6 disposed at a lower portion of the U-shaped support base 21, a bottom portion of the support frame 4 is fixed to a building, an upper portion of the support frame is connected to the U-shaped support base 21 by a bolt, and the U-shaped support base 21 is provided with a strip-shaped hole extending along a radial direction (i.e., an X-axis direction in the drawing) of the barrel 1, so that the U-shaped support base 21 can be adjusted along the X-axis direction, and further, when the installation is performed, an installation height (i.e., a Y-axis direction in the drawing) of.
In the above embodiment, preferably, the superconducting ion rotating gantry further includes a counterweight mechanism 7 connected to the barrel 1, for balancing when the barrel 1 rotates.
The working principle of the superconducting ion rotating rack provided by the invention is described in detail below by taking a fixed division of 30 degrees as an example.
In the present embodiment, the number of the indexing holes 41 on the indexing ring 4 is 12, which are uniformly distributed along the circumference, that is, the angle between each indexing hole 41 is 30 °; meanwhile, 12 control elements are uniformly arranged on the end surface of the indexing ring 4 at one side of the indexing hole 41; when the rotation angle of the rotating frame is set to be 30 degrees, the driving mechanism 3 on the rolling supporting structure 2 drives the main supporting wheel 22 to rotate, the cylinder body 1 starts to rotate by utilizing friction transmission, and the control element starts to work; when the cylinder body 1 rotates to 30 degrees, the control element outputs a control signal, the driving mechanism 3 stops working after receiving the control signal, and the positioning mechanism 5 starts to act after receiving the control signal, so that the driving rod 51 pushes the positioning pin shaft 52 to move, and the positioning pin shaft enters the indexing hole 41 of the indexing ring 4; at this point, the cylinder 1 is completely stationary for treatment with the ion beam. After the treatment is finished, the positioning mechanism 5 outputs a control signal and enables the driving rod 51 to pull the positioning pin shaft 52 to move, so that the positioning pin shaft is separated from the indexing hole 41; after receiving the signal, the driving mechanism 3 drives the main supporting wheel 22 to rotate in the reverse direction, so that the cylinder 1 rotates back to the original point. At the same time, the home position to which the cylinder 1 is returned can be positioned again by the positioning mechanism 5.
When the rotation angle of the rotating frame is set to be 150 degrees, the driving mechanism 3 drives the main supporting wheel 22 to rotate, the cylinder body 1 starts to rotate by utilizing friction transmission, the control element starts to work, and when the cylinder body 1 rotates less than 150 degrees, the control element has a detection or counting function and does not output signals enabling the rolling supporting structure 2 and the positioning mechanism 5 to act; when the cylinder body 1 rotates to 150 degrees, the control element outputs a control signal, the driving mechanism 3 stops working after receiving the control signal, and the positioning mechanism 5 starts to act after receiving the control signal, so that the driving rod 51 pushes the positioning pin shaft 52 to move, and the positioning pin shaft enters the indexing hole 41 on the end face of the cylinder body 1; by analogy, the rotation and accurate positioning of the rotation angle of integral multiple of 30 degrees can be realized.
Likewise, the distribution angle and number of the indexing holes 41 and the control elements can be varied to achieve rotation and accurate positioning of the rotating gantry at the corresponding index values to meet the needs of different users.
In addition, as shown in fig. 7, the indexing hole 41 may be configured as a square groove structure, the positioning pin 52 may also be configured as a rectangular parallelepiped shape capable of matching with the indexing hole, the positioning mechanism 5 is fixed along the Y direction, and when the cylinder 1 rotates to the set position, the driving rod 51 pushes the positioning pin 52 along the Y direction to move, so that the positioning pin enters the square groove of the indexing hole 41, and the positioning function may also be achieved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. A superconducting ion rotating gantry, comprising:
the barrel body (1) is arranged horizontally, and support rings (11) are arranged at two ends of the barrel body (1);
the rolling support mechanisms (2) are arranged at the bottom of the barrel (1), and at least two rolling support mechanisms (2) form a rolling friction pair with a support ring (11) of the barrel (1);
the driving mechanism (3) is connected with at least one rolling supporting mechanism (2), and the driving mechanism (3) is configured to drive the barrel (1) to rotate along the circumferential direction through the rolling supporting mechanism (2);
the indexing ring (4) is arranged in one of the support rings (11) and is fixedly connected with the support ring, and a plurality of indexing holes (41) are uniformly machined in the indexing ring (4) along the circumferential direction;
a positioning mechanism (5) configured to position the cylinder (1) in a set position by inserting an indexing hole (41) of the indexing ring (4).
2. A superconducting ion rotating gantry according to claim 1, wherein the rolling support mechanism (2) comprises:
a U-shaped support base (21);
the main supporting wheel (22) is rotatably connected to the U-shaped supporting base (21) through a supporting shaft (23);
the auxiliary supporting plates (24), one end of each of the two groups of auxiliary supporting plates (24) is hinged with the supporting shaft (23);
the auxiliary supporting wheels (25) are respectively and rotatably connected to the other ends of the two groups of auxiliary supporting plates (24) through auxiliary shafts (26), and the two auxiliary supporting wheels (25) and the main supporting wheel (22) are arranged in a triangular mode.
3. A superconducting ion rotating gantry according to claim 2, wherein the main supporting wheel (22) and the auxiliary supporting wheel (25) are both convex and concave structures, and the outer circumference of the supporting ring (11) is concave and convex structures matched with the main supporting wheel (22) and the auxiliary supporting wheel (25).
4. A superconducting ion rotating gantry according to claim 1, characterized in that the positioning mechanism (5) comprises:
a drive rod (51) fixed to a building or other fixed object;
the positioning pin shaft (52) is hinged at the action end of the driving rod (51);
a plurality of control elements respectively mounted at the indexing holes (41) of the indexing ring (4) and electrically connected with the driving rod (51) and the driving mechanism (3).
5. The superconducting ion rotating rack according to claim 2, further comprising a support frame (6) arranged at the lower part of the U-shaped support base (21), wherein the bottom of the support frame (4) is fixed with a building, the upper part of the support frame is connected with the U-shaped support base (21) through a bolt, and the U-shaped support base (21) is provided with a long-strip-shaped hole extending along the radial direction of the barrel (1).
6. A superconducting ion rotating gantry according to claim 1, characterized in that it further comprises a counterweight mechanism (7) connected to said barrel (1) for balancing when said barrel (1) rotates.
7. A superconducting ion rotating gantry according to claim 4, wherein the indexing holes (41) are through holes extending in the axial direction of the cylinder (1), and the positioning pins (52) are arranged in a cylindrical shape capable of fitting with the positioning pins while fixing the positioning mechanism (5) in the axial direction of the cylinder (1).
8. The superconducting ion rotating gantry according to claim 4, wherein the index hole (41) is a square groove extending along the radial direction of the cylinder (1), and the positioning pin (52) is configured in a rectangular parallelepiped shape to be engaged therewith, and fixes the positioning mechanism (5) along the radial direction of the cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638022.0A CN113209500A (en) | 2021-06-08 | 2021-06-08 | Superconductive ion rotating frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110638022.0A CN113209500A (en) | 2021-06-08 | 2021-06-08 | Superconductive ion rotating frame |
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| CN113209500A true CN113209500A (en) | 2021-08-06 |
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| CN202110638022.0A Pending CN113209500A (en) | 2021-06-08 | 2021-06-08 | Superconductive ion rotating frame |
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Application publication date: 20210806 |
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