Beam detector rotating tool

Abstract

The utility model relates to a beam detector rotating tool, which comprises a tray, a rotating shaft, a bearing seat, an electric rotating platform and a base, a beam detector is fixedly mounted on the tray, the base is fixedly mounted at the tail of a treatment bed, and the bearing seat used for mounting the rotating shaft is fixedly mounted on the base. The electric rotating platform is connected with the rotating shaft to drive the rotating shaft to rotate, and the tray is fixedly connected with the rotating shaft, so that the beam detector is rotatably mounted on the treatment bed. According to the beam detector rotating tool of the utility model, the beam detector can rotate at will according to needs, the positions of beams and the sizes of beam spots of the rotating frame at different angles can be measured, and beam measurement requirements at any angle can be satisfied. Moreover, according to the beam detector rotating tool provided by the utility model, the treatment head shell does not need to be disassembled, and the test efficiency of the beam detector is not influenced.

Description

TECHNICAL FIELD

[0001] The utility model relates to medical apparatus and instruments more particularly to a beam position monitor rotating tool. BACKGROUND

[0002] Tumor radiotherapy utilizes high-energy rays, including X-rays, gamma rays, protons, and heavy ion rays, to achieve the purpose of treating tumors through the killing effect of rays on cells. With the development of precise radiotherapy, high precision is required for radiotherapy equipment.

[0003] In radiotherapy, the radiotherapy machine is installed on a rotating gantry to rotate so as to treat the patient on the treatment bed from different angles. The beam position monitor (BPM) is usually installed in the beam channel of the radiotherapy machine to monitor and measure the position of the beam, the size of the beam spot, and other parameters to ensure the accuracy of treatment.

[0004] In specific use, the beam position monitor is placed on the treatment bed, and the gantry angle of the measured beam is limited, usually only 270° and 0° of the rotating gantry can be measured, for example, when the rotating gantry is at 180, the measurement surface of the beam position monitor is kept perpendicular to the beam, and the beam is blocked by the bed plate of the treatment bed, affecting the measurement result. Moreover, due to the complexity of the structure of the beam position monitor and the rotating gantry, the multi-angle beam measurement of the rotating gantry through the beam position monitor faces many challenges.

[0005] It is known that the radiotherapy machine includes a treatment head, after the treatment head shell is disassembled, the beam position monitor can be installed on the treatment head to rotate with the rotating gantry, thereby realizing multi-angle beam measurement. However, the deviation caused by the rotation of the rotating gantry will be directly transmitted to the beam position monitor, for example, the deformation of the rotating gantry causes the center point of the beam position monitor to deviate from the center point, which leads to the deviation of the test result of the beam position monitor. Moreover, disassembling and assembling the treatment head shell will also affect the test efficiency of the beam position monitor. SUMMARY

[0006] In order to solve the problems of multi-angle measurement accuracy and efficiency in the prior art, the utility model provides a beam position monitor rotating tool.

[0007] The beam position monitor rotating tool according to the utility model comprises a tray, a rotating shaft, a bearing seat, an electric rotating platform and a base, wherein the beam position monitor is fixedly installed on the tray, the base is fixedly installed at the tail of the treatment bed, the bearing seat for installing the rotating shaft is fixedly installed on the base, the electric rotating platform is connected with the rotating shaft to drive the rotation of the rotating shaft, and the tray is fixedly connected with the rotating shaft, thereby realizing the rotating installation of the beam position monitor on the treatment bed.

[0008] In a preferred embodiment, the bottom of the tray has a plurality of positioning pin holes, and the positioning pins of the beam detector are inserted into the positioning pin holes to achieve accurate positioning of the beam detector on the tray.

[0009] In a preferred embodiment, the bottom of the tray has a plurality of threaded holes, and bolts pass through the threaded holes to securely mount the beam detector on the tray.

[0010] In a preferred embodiment, the outer frame of the tray is engraved with markings so that the laser light in the treatment room can be aligned during positioning so that the center of the beam detector is at the isocenter position.

[0011] In a preferred embodiment, the beam detector rotating fixture further includes a connecting plate and a flange, wherein the tray is fixedly connected to the rotating shaft via the connecting plate and the flange.

[0012] In a preferred embodiment, the connecting plate is fixedly mounted on the end surface of the tray facing the rotating shaft, and the flange extends from the connecting plate toward the rotating shaft to accommodate and fix the free end of the rotating shaft.

[0013] In a preferred embodiment, the beam detector rotating fixture further comprises a fixing plate fixedly mounted on the base, and an electric rotating platform for driving the rotating shaft is fixedly mounted on the fixing plate.

[0014] In a preferred embodiment, the beam detector rotating fixture further includes a reinforcing beam and fixing bolts, wherein the base and the treatment bed are located between two reinforcing beams spaced apart from each other and are clamped by a plurality of fixing bolts, thereby firmly fixing the base on the treatment bed.

[0015] In a preferred embodiment, the two opposite sides of the base are clamped and fixed by four reinforcing beams.

[0016] The beam detector rotating fixture of the present invention allows the beam detector to be rotated as needed to measure the beam position and beam spot size at different angles of the rotating gantry, meeting beam measurement requirements at any angle. Furthermore, the beam detector rotating fixture of the present invention eliminates the need to disassemble the treatment head housing, which does not affect beam detector testing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of a beam detector rotating tooling according to a preferred embodiment of the utility model.

[0018] Figure 2 yes Figure 1 Schematic diagram of the structure of the pallet. DETAILED DESCRIPTION

[0019] The preferred embodiments of the present invention are given below in conjunction with the accompanying drawings and described in detail.

[0020] like Figure 1 As shown, a beam detector rotating fixture according to a preferred embodiment of the present invention includes a tray 1, a rotating shaft 4, a bearing seat 5, an electric rotating platform 6, and a base 8. The beam detector is fixedly mounted on the tray 1, the base 8 is fixedly mounted at the rear of the treatment bed, the bearing seat 5 for mounting the rotating shaft 4 is fixedly mounted on the base 8, the electric rotating platform 6 is connected to the rotating shaft 4 to drive the rotation of the rotating shaft 4, and the tray 1 is fixedly connected to the rotating shaft 4, thereby achieving the rotational installation of the beam detector on the treatment bed. In this way, the beam detector rotating fixture of the present invention can be used to test the beam performance at any angle, with the angle selected based on the beam being perpendicular to the detector plane.

[0021] like Figure 2 As shown, the bottom of the tray 1 has several locating pin holes 11, into which the beam detector's locating pins are inserted to precisely position the beam detector on the tray 1. Furthermore, the bottom of the tray 1 has several threaded holes 12, through which bolts pass to secure the beam detector to the tray 1. Furthermore, the outer frame of the tray 1 is engraved with markings to facilitate alignment with the laser light in the treatment room during positioning, ensuring that the center of the beam detector is at the isocenter position.

[0022] Back to Figure 1 The beam detector rotating fixture of this embodiment further includes a connecting plate 2 and a flange 3, wherein the tray 1 is fixedly connected to the rotating shaft 4 via the connecting plate 2 and the flange 3. Specifically, the connecting plate 2 is fixedly mounted on the end face of the tray 1 facing the rotating shaft 4. The flange 3 extends from the connecting plate 2 toward the rotating shaft 4 to accommodate and secure the free end of the rotating shaft 4. This strengthens the connection rigidity, prevents deformation or breakage of the tray 1 after supporting the beam detector, ensures the strength of the beam detector rotating fixture, and reduces deformation.

[0023] like Figure 1 As shown, the beam detector rotating fixture of this embodiment further includes a fixing plate 7 , which is fixedly mounted on the base 8 , and an electric rotating platform 6 for driving the rotating shaft 4 is fixedly mounted on the fixing plate 7 .

[0024] like Figure 1 As shown, the beam detector rotating fixture of this embodiment further includes reinforcing beams 9 and fixing bolts 10. The base 8 and the treatment bed are located between two spaced-apart reinforcing beams 9 and are clamped together by a plurality of fixing bolts 10. This secures the base 8 (i.e., the beam detector rotating fixture) to the treatment bed, preventing the beam detector rotating fixture from tipping over or shifting after supporting the beam detector. It should be understood that the four reinforcing beams 9 securely clamp the base 8 on opposite sides.

[0025] In this embodiment, the materials of the tray 1 and the base 8 can be aluminum, stainless steel, carbon fiber, etc., as long as the strength meets the requirements.

[0026] In this embodiment, the beam detector can be any beam detector that does not have a rotation function, such as the Lynx detector of IBA Dosimetry. When replacing it with a beam detector of other regular shapes, only the tray 1 needs to be replaced accordingly.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of the present invention. Various modifications are possible to the above embodiments of the present invention. In other words, any simple, equivalent changes and modifications made in accordance with the claims and description of the present invention fall within the scope of protection of the present invention. Anything not fully described in this invention represents conventional technology.

Claims

1. A beam detector rotating fixture, characterized in that: The beam detector rotating tooling includes a tray, a rotating shaft, a bearing seat, an electric rotating platform and a base. The beam detector is fixedly mounted on the tray, the base is fixedly mounted on the tail of the treatment bed, the bearing seat for mounting the rotating shaft is fixedly mounted on the base, the electric rotating platform is connected to the rotating shaft to drive the rotation of the rotating shaft, and the tray is fixedly connected to the rotating shaft, thereby realizing the rotating installation of the beam detector on the treatment bed.

2. The beam detector rotating fixture according to claim 1, characterized in that: The bottom of the tray is provided with a plurality of positioning pin holes, and the positioning pins of the beam detector are inserted into the positioning pin holes for installation to achieve accurate positioning of the beam detector on the tray.

3. The beam detector rotating fixture according to claim 1, characterized in that: The bottom of the tray is provided with a plurality of threaded holes, and bolts pass through the threaded holes to fix the beam detector on the tray.

4. The beam detector rotating fixture according to claim 1, characterized in that: The outer frame of the tray is engraved with markings to align the laser light in the treatment room so that the center of the beam detector is at the isocenter position during positioning.

5. The beam detector rotating fixture according to claim 1, characterized in that: The beam detector rotating fixture further comprises a connecting plate and a flange, wherein the tray is fixedly connected to the rotating shaft via the connecting plate and the flange.

6. The beam detector rotating fixture according to claim 5, characterized in that: The connecting plate is fixedly mounted on the end surface of the tray facing the rotating shaft, and the flange extends from the connecting plate toward the rotating shaft to accommodate and fix the free end of the rotating shaft.

7. The beam detector rotating fixture according to claim 1, characterized in that: The beam detector rotating fixture further comprises a fixing plate fixedly mounted on the base, and an electric rotating platform for driving the rotating shaft is fixedly mounted on the fixing plate.

8. The beam detector rotating fixture according to claim 1, characterized in that: The beam detector rotating fixture further comprises a reinforcing beam and fixing bolts, wherein the base and the treatment bed are located between two reinforcing beams spaced apart from each other and are clamped by a plurality of fixing bolts, thereby firmly fixing the base on the treatment bed.

9. The beam detector rotating fixture according to claim 8, characterized in that: The opposite sides of the base are clamped and fixed by four reinforcement beams.

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