CN211188831U - Multi-blade grating maintenance auxiliary device for medical linear accelerator - Google Patents

Multi-blade grating maintenance auxiliary device for medical linear accelerator Download PDF

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Publication number
CN211188831U
CN211188831U CN201921616983.6U CN201921616983U CN211188831U CN 211188831 U CN211188831 U CN 211188831U CN 201921616983 U CN201921616983 U CN 201921616983U CN 211188831 U CN211188831 U CN 211188831U
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bolt hole
edge strip
hinge
strip
piece
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CN201921616983.6U
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桂龙刚
李军
石苗
马筠
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Northern Jiangsu Peoples Hospital
Subei Peoples Hospital of Jiangsu Province
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Northern Jiangsu Peoples Hospital
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Abstract

The utility model relates to a medical linear accelerator multi-leaf grating maintenance auxiliary device, which belongs to the field of medical instrument maintenance, and comprises a fixed assembly and a lifting piece, wherein the fixed assembly comprises a supporting piece and a cross bar, the supporting piece comprises a left edge strip, a right edge strip and a lower edge strip, the lower edge strip is arranged between the left edge strip and the right edge strip, the left edge strip, the right edge strip and the lower edge strip are integrated, the lower edge strip is provided with at least 2 hinge assemblies, each hinge assembly comprises a first hinge sheet, a second hinge sheet and a hinge shaft, the first hinge sheet is fixed on the lower edge strip, the second hinge sheet is fixed on the cross bar, a barrier column is arranged on the first hinge sheet of any one hinge assembly, the lifting piece comprises a handle strip and a fixing strip, the handle strip and the fixing strip are fixed into a whole, the lifting piece is in an L shape, and a fixing bolt hole is arranged on the fixing strip.

Description

Multi-blade grating maintenance auxiliary device for medical linear accelerator
Technical Field
The utility model relates to a multi-blade grating maintenance auxiliary device of a medical linear accelerator, which belongs to the field of medical appliance maintenance.
Background
Currently, medical linear accelerators manufactured by the company warian (Varian) in the united states are widely applied to various countries worldwide, and provide tumor radiotherapy (radiotherapy) services for hundreds of thousands of cancer patients every day, and a plurality of accelerators (23 EX type, IX type, Trilogy type, TrueBeam type and the like) manufactured by the company adopt M L C-120 type multi-leaf gratings, wherein the type gratings comprise a carriage A and a carriage B, the carriage A comprises 60 grating blades on the A surface, the carriage B comprises 60 gratings on the B surface, and the gratings are controlled by a microcomputer to independently drive A, B grating blades to move by 120 independent electric motors so as to form an irregular irradiation field, so that the purposes of tumor conformal therapy or intensity modulated therapy are achieved.
In the processing of many common faults of M L C-120 type PGA, three fault processing conditions including blade cleaning, bottom soft potentiometer replacement and drive nut replacement are included in a carriage.
In view of the above tedious maintenance process, the following two main disadvantages are summarized:
the first is the operational hazard. In the first-step maintenance process, because the carriage is high in position and very heavy, the requirements on the physical quality and the action coordination of maintenance personnel are high in the whole process of lifting the carriage away from the accelerator, and carelessness is slight, so that the carriage is easy to fall and damage, and great economic loss (carriage is very expensive) is caused, and in case of falling and smashing the carriage onto the maintenance personnel, a great safety accident is caused.
The second is the high labor cost. In the second step of maintenance process, at least 2 persons are needed for cooperative operation, so that the maintenance requirement and the labor cost are increased.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an easy operation, safe effective, and only need a maintenance personal can accomplish the maintenance work the medical linear accelerator M L C-120 type multi-blade grating maintenance auxiliary device of Varian to above-mentioned current problem.
The utility model aims at realizing like this, a medical linear accelerator multi-leaf grating maintenance auxiliary device, characterized by: comprises a fixed component and a lifting piece;
the fixing assembly comprises a supporting piece and a cross bar, the supporting piece consists of a left edge strip, a right edge strip and a lower edge strip, the lower edge strip is arranged between the left edge strip and the right edge strip, the left edge strip, the right edge strip and the lower edge strip are integrated, and the supporting piece is integrally concave;
the lower edge strip is provided with at least 2 hinge assemblies, each hinge assembly comprises a first hinge piece, a second hinge piece and a hinge shaft, and the first hinge piece and the second hinge piece are movably connected through the hinge shaft; the first hinge plate is fixed on the lower edge strip, and the second hinge plate is fixed on the cross rod; a stop column is arranged on the first hinge sheet of any one hinge assembly;
the upper part of the left strip of the supporting piece is provided with a left bolt hole, and the right strip of the supporting piece is provided with a right bolt hole;
the cross rod is provided with a first cross rod bolt hole, a second cross rod bolt hole, a third cross rod bolt hole and a fourth cross rod bolt hole;
the lifting piece comprises a handle strip and a fixing strip, the handle strip and the fixing strip are fixed into a whole, the lifting piece is L-shaped integrally, and the fixing strip is provided with a fixing bolt hole.
The lower edge strip is vertical to the left edge strip and the right edge strip.
The stop column is fixedly connected with the first hinge plate in a welding or screwing mode through threads.
The diameter of the left bolt hole is 10mm, the diameter of the limiting hole is 10mm, and the diameter of the right bolt hole is 18 mm.
The diameter of the first cross rod bolt hole is 15mm, the diameter of the second cross rod bolt hole is 18mm, the diameter of the third cross rod bolt hole is 15mm, and the diameter of the fourth cross rod bolt hole is 18 mm.
The diameter of the fixing bolt hole is 15 mm.
The height of the retaining column is 5 cm.
And a limiting hole is further formed in the left edge strip and is located below the left bolt hole, and the diameter of the limiting hole is 10 mm.
The utility model has the advantages of reasonable structure, through the utility model provides a medical linear accelerator multi-leaf grating maintenance auxiliary device, including fixed subassembly, lift up the piece, they are independent each other, but lack one can, fixed subassembly includes support piece, the horizontal pole, support piece comprises left strake, right strake, the lower strake sets up between left strake, right strake, and left strake, right strake, the lower strake is as an organic whole, support piece wholly is the spill, be provided with at least 2 hinge subassemblies on the lower strake, the hinge subassembly includes first hinge piece, second hinge piece, the articulated shaft, pass through articulated shaft swing joint between first hinge piece and the second hinge piece, first hinge piece is fixed in on the lower strake, the second hinge piece is fixed in on the horizontal pole, be equipped with the bumping post on the first hinge piece of arbitrary hinge subassembly, be provided with left bolt hole on support piece's the upper portion of the left strake, be provided with right bolt hole on support piece's the right strake, still be provided with spacing hole on the left strake, be provided with first bolt hole on the horizontal pole, the bolt hole, third bolt hole, the bolt hole is equipped with the fixed bolt hole on the horizontal pole, the fixed spare of the fixed horizontal pole, lift up the whole fixed spare, the fixed spare of the fixed bar, it is.
Two kinds of use scenes of time-sharing are used, the first is the carriage A of maintenance M L C-120 type multi-leaf grating, the second is the carriage B of maintenance M L C-120 type multi-leaf grating, under these two kinds of use scenes the utility model discloses the theory of use and the step of device are roughly the same, and its difference lies in the use method difference of four bolt holes on the horizontal pole on the fixed subassembly.
The first method is to fix a fixing component at the end A of a handpiece base of a Varian medical linear accelerator when repairing the cariage A of the M L C-120 multi-leaf grating, specifically, bolts are respectively screwed in a left bolt hole on a left side strip and a right spiral hole on a right side strip and then screwed on the end A of the handpiece base of the Varian medical linear accelerator, bolts are respectively screwed in a second cross bar bolt hole and a fourth cross bar bolt hole on a cross bar of the fixing component, the bolts penetrate through the second cross bar bolt hole and the fourth cross bar bolt hole and then are screwed on the cariage A, then bolts are screwed in a fixing bolt hole on a lifting piece, the bolts penetrate through the fixing bolt holes and are screwed on the cariage A, so that the lifting piece is fixed on the cariage A on the M L C-120 multi-leaf grating, the screws between the cariage A and the Varian medical linear accelerator are loosened, a handle strip is pulled, the cariage A rotates around a hinge shaft, the cariage A is turned up and is supported in an inclined shape under the action of a baffle column, and the cariage A is convenient to repair.
The second method is to fix a fixing component at the B end of a machine head base of the Varian medical linear accelerator when repairing the M L C-120 multi-leaf grating carriage B, specifically, bolts are respectively screwed in a left bolt hole on a left side strip and a right spiral hole on a right side strip, and then are screwed at the B end of the machine head base on the machine head base of the Varian medical linear accelerator, bolts are respectively screwed in a first cross rod bolt hole and a third cross rod bolt hole on a cross rod of the fixing component, penetrate through the first cross rod bolt hole and the third cross rod bolt hole and then are screwed in the carriage B, then bolts are screwed in a fixing bolt hole on a lifting piece, penetrate through the fixing bolt holes and are screwed in the carriage B, so that the lifting piece is fixed in the carriage B, a screw between the carriage B and the Varian medical linear accelerator is loosened, a handle strip is pulled, the carriage B rotates around a hinge shaft, so that the carriage B is turned up, and is obliquely supported under the action of a blocking column, and the carriage B is convenient to repair.
The utility model discloses the device make full use of accelerator aircraft nose and the distribution characteristics of the current bolt hole of multi-leaf grating, structural design is ingenious, has safe, convenient, laborsaving of operation, saves advantages such as maintenance cost of labor.
Let through the above-mentioned design the utility model has the advantages of it is following:
1. the operation is safe and simple, in the whole maintenance process, the carriage of the M L C-120 multi-leaf grating does not need to be lifted and separated from the accelerator, the carriage can be slightly lifted by utilizing the device of the utility model to be maintained at a set inclination angle, and the maintenance personnel can easily complete the maintenance work under the inclination angle;
2. the labor cost is saved: only one maintenance worker is needed to complete the maintenance work.
Drawings
Fig. 1 is a schematic structural diagram of a fixing assembly according to the present invention.
Fig. 2 is a schematic structural view of the lifting member of the present invention.
Fig. 3 is a schematic view of the usage state of the present invention.
Fig. 4 is a schematic view of the usage state of the present invention.
In the figure, 1 left bolt hole, 2 first cross bar bolt holes, 3 second cross bar bolt holes, 4 cross bars, 5 third cross bar bolt holes, 6 fourth cross bar bolt holes, 7 right bolt holes, 8 limiting holes, 9 left side bars, 10 supporting pieces, 11 hinge assemblies, 11-1 first hinge pieces, 11-2 second hinge pieces, 12 retaining columns, 13 lower side bars, 14 hinging shafts, 15 right side bars, 16 handle bars, 17 lifting pieces, 18 fixing bars and 19 fixing bolt holes.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
A multi-blade grating maintenance auxiliary device of a medical linear accelerator comprises a fixed component and a lifting piece 17; the fixed subassembly includes support piece 10, horizontal pole 4, and support piece comprises left side strip 9, right strip 15, lower border 13, and lower border 13 sets up between left side strip 9, right strip 15, and left side strip 9, right strip 15, lower border 13 are the integration, and support piece wholly is the spill.
At least 2 hinge assemblies 11 are arranged on the lower edge strip 13, each hinge assembly comprises a first hinge piece 11-1, a second hinge piece 11-2 and a hinge shaft 14, and the first hinge piece 11-1 and the second hinge piece 11-2 are movably connected through the hinge shaft 14; the first hinge plate 11-1 is fixed on the lower edge strip 13, and the second hinge plate 11-2 is fixed on the cross bar 2; a stop post 12 is arranged on the first hinge sheet 11-1 of any one hinge assembly.
Set up left bolt hole 1 on support piece's left side strip 9 upper portion, set up right bolt hole 7 on support piece's the right strip 15, still set up spacing hole 8 on the left side strip 9, spacing hole 8 is located the lower level of left bolt hole 1. A first cross bar bolt hole 2, a second cross bar bolt hole 3, a third cross bar bolt hole 5 and a fourth cross bar bolt hole 6 are arranged on a cross bar 4.
The lifting piece 17 comprises a handle strip 16 and a fixing strip 18, the handle strip 16 and the fixing strip 18 are fixed into a whole, the lifting piece 17 is L-shaped as a whole, and a fixing bolt hole 19 is formed in the fixing strip 18.
Furthermore, the lower strip 13 is perpendicular to the left strip 9 and the right strip 15. The bumping post 12 is fixedly connected with the first hinge plate 11-1 by welding or screwing.
The diameter of the left bolt hole 1 is 10mm, the diameter of the limiting hole 8 is 10mm, and the diameter of the right bolt hole 7 is 18 mm. The diameter of the first rail bolt hole 2 is 15mm, the diameter of the second rail bolt hole 3 is 18mm, the diameter of the third rail bolt hole 5 is 15mm, and the diameter of the fourth rail bolt hole 6 is 18 mm. The diameter of the fixing bolt hole 19 is 15 mm. The height of the pillars 12 is 5 cm.
The basic principle of the invention is as follows:
as shown in fig. 1 and 2, the device of the present invention comprises a concave supporting member 10, a cross bar 4, a hinge assembly 11 and a lifting member 17 in the shape of L, each of which is intended as follows:
the support member 10: the device of the utility model is firmly connected with the nose base of the Varian medical linear accelerator through bolts;
the cross bar 4 is used for firmly connecting the device of the invention with the carriage A or the carriage B in the M L C-120 type multi-leaf grating through a bolt, so that the device is integrated.
The hinge assembly 11 is constructed such that the crossbar 4 and the carriage to be repaired can be regarded as a single body when they are firmly connected by bolts, and the hinge assembly 11 functions to turn the single body, and at this time, the crossbar 4 is fixed to the second hinge plate 11-2 of the hinge assembly 11, the first hinge plate 11-1 is fixed to the lower edge 13 of the support 10, and the first hinge plate 11-1 and the second hinge plate 11-2 are hinge-connected by the hinge shaft 14. although the hinge assembly 11 can theoretically turn the M L C-120 type multileaf grating to be repaired by 0 ° to 180 °, as maintenance needs, it is only necessary to turn the M L C-120 type multileaf grating to be repaired to 145 ° and maintain the stable state, in which the carriage is in an inclined stable state, and maintenance personnel can perform all subsequent maintenance works, and in order to achieve the stable state, the present invention provides a barrier pillar 12 at the lower end of the first hinge plate 11-1, and the barrier pillar 12 can just abut against the M35120C-120 multileaf grating (L C3).
Since the M L C-120 type multi-leaf collimator is heavy, at least 2 hinge assemblies 11 are provided on the lower edge bar 13 as shown in fig. 1 in order to stabilize the overturning process without shaking, thereby enhancing the stability of the overturning process.
After the fixed group is installed, the M L C-120 multi-leaf grating is heavy, in order to enable maintenance personnel to easily overturn the M L C-120 multi-leaf grating in a labor-saving manner, the device is further provided with a L-shaped lifting piece 17, which is shown in figure 2 and consists of a handle strip 16, a fixing strip 18 (long in length) and a bolt hole 19, the fixing strip 18 can be stably connected with a carriage through a bolt, and the maintenance personnel can hold the handle strip 16 to easily overturn the M L C-120 multi-leaf grating according to the basic principle that the longer the moment arm in physics is, the more labor is saved as the length of the fixing strip 18 is longer.
The above description has made a basic introduction to the principles of use and embodiments of the device of the present invention, but the device of the present invention has two important features:
first, as shown in fig. 1, a left strip 9 is provided with a limiting hole 8. A limit nail is arranged on a handpiece base of the Varian medical linear accelerator, and the limit nail is mainly used for facilitating the quick positioning and installation of a handpiece disc and the handpiece base. Due to the presence of the stop pin, the surface of the handpiece base is convex, which inevitably hinders the fixed connection of the concave shaped element 10 to the handpiece base. In order to solve the problem, the utility model discloses the device has been established spacing hole 8 in order to "hold" stop pin in order to eliminate its influence.
Second, as shown in fig. 1, each bolt hole on the crossbar 4 (4 bolt holes, namely, the first crossbar bolt hole 2, the second crossbar bolt hole 3, the third crossbar bolt hole 5, and the fourth crossbar bolt hole 6) has a fixed usage scenario, and in a single maintenance instance, the bolt holes are not all used at the same time, but only 2 bolt holes are used, because only two bolt holes are needed when carriage a or carriage B is fixedly connected.
The utility model discloses so establish 4 bolt holes on horizontal pole 4 is because carriage A and carriage B among M L C-120 type multi-leaf grating are structurally non-axisymmetric, and each bolt hole on horizontal pole 4 can not be shared by carriage A and carriage B, so the relative position and the size of these 4 bolt holes must with the position and the size one-to-one of the corresponding bolt hole of carriage A and carriage B. particularly, when maintaining carriage A, only need use second horizontal pole bolt hole 3 and fourth horizontal pole bolt hole 6 on horizontal pole 4, when maintaining carriage B, only need use first horizontal pole bolt hole 2 and third horizontal pole bolt hole 5 on horizontal pole 4.

Claims (8)

1. A multi-blade grating maintenance auxiliary device of a medical linear accelerator is characterized in that: comprises a fixed component and a lifting piece (17);
the fixing assembly comprises a supporting piece (10) and a cross rod (4), the supporting piece is composed of a left edge strip (9), a right edge strip (15) and a lower edge strip (13), the lower edge strip (13) is arranged between the left edge strip (9) and the right edge strip (15), the left edge strip (9), the right edge strip (15) and the lower edge strip (13) are integrated, and the supporting piece is integrally concave;
the lower edge strip (13) is provided with at least 2 hinge assemblies (11), each hinge assembly comprises a first hinge piece (11-1), a second hinge piece (11-2) and a hinge shaft (14), and the first hinge piece (11-1) is movably connected with the second hinge piece (11-2) through the hinge shaft (14); the first hinge plate (11-1) is fixed on the lower edge strip (13), and the second hinge plate (11-2) is fixed on the cross bar (4); a blocking column (12) is arranged on a first hinge sheet (11-1) of any one hinge assembly;
a left bolt hole (1) is formed in the upper portion of a left edge strip (9) of the supporting piece, and a right bolt hole (7) is formed in a right edge strip (15) of the supporting piece;
a first cross rod bolt hole (2), a second cross rod bolt hole (3), a third cross rod bolt hole (5) and a fourth cross rod bolt hole (6) are formed in the cross rod (4);
the lifting piece (17) comprises a handle strip (16) and a fixing strip (18), the handle strip (16) and the fixing strip (18) are fixed into a whole, the lifting piece (17) is L-shaped as a whole, and a fixing bolt hole (19) is formed in the fixing strip (18).
2. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the lower edge strip (13) is vertical to the left edge strip (9) and the right edge strip (15).
3. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the retaining column (12) is fixedly connected with the first hinge sheet (11-1) in a welding or screwing manner.
4. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the diameter of the left bolt hole (1) is 10mm, and the diameter of the right bolt hole (7) is 18 mm.
5. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the diameter of the first cross rod bolt hole (2) is 15mm, the diameter of the second cross rod bolt hole (3) is 18mm, the diameter of the third cross rod bolt hole (5) is 15mm, and the diameter of the fourth cross rod bolt hole (6) is 18 mm.
6. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the diameter of the fixing bolt hole (19) is 15 mm.
7. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: the height of the retaining column (12) is 5 cm.
8. The multi-blade grating maintenance auxiliary device of the medical linear accelerator as claimed in claim 1, wherein: still be equipped with spacing hole (8) on left strake (9), spacing hole (8) are located the lower level of left bolt hole (1), and the diameter of spacing hole (8) is 10 mm.
CN201921616983.6U 2019-09-26 2019-09-26 Multi-blade grating maintenance auxiliary device for medical linear accelerator Active CN211188831U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921616983.6U CN211188831U (en) 2019-09-26 2019-09-26 Multi-blade grating maintenance auxiliary device for medical linear accelerator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921616983.6U CN211188831U (en) 2019-09-26 2019-09-26 Multi-blade grating maintenance auxiliary device for medical linear accelerator

Publications (1)

Publication Number Publication Date
CN211188831U true CN211188831U (en) 2020-08-07

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ID=71860206

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Application Number Title Priority Date Filing Date
CN201921616983.6U Active CN211188831U (en) 2019-09-26 2019-09-26 Multi-blade grating maintenance auxiliary device for medical linear accelerator

Country Status (1)

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CN (1) CN211188831U (en)

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