Auxiliary device for measuring dosage of water tank of medical linear accelerator

Abstract

The utility model relates to the technical field of radiotherapy equipment, in particular to an auxiliary device for medical linear accelerator water tank dosage measurement, which comprises a water tank, a fixing plate and an adjusting plate. A fixing plate is fixedly connected to one side of the water tank, a rotating handle is rotatably connected to the top of the fixing plate, an adjusting plate is spirally connected to the outer side of the rotating handle, a connecting rod is fixedly connected to one side of the adjusting plate, and a shake stopping mechanism is fixedly connected to the other end of the connecting rod. Connecting plates are fixedly connected to the front side and the rear side of one side of the shaking stopping mechanism correspondingly, and sliding frames are fixedly connected to the other ends of the connecting plates correspondingly. When the device is used, after clean water is poured into the water tank, the pulling rod is pulled to drive the pulling rope to move, the pulling rope can pull the shake-stopping film, the shake-stopping film is laid on the water surface at the moment, the aim of stopping shake of the clean water can be effectively and rapidly achieved, and follow-up metering calibration work can be conveniently carried out.

Description

Technical Field

[0001] This utility model relates to the field of radiotherapy equipment technology, specifically to an auxiliary device for dose measurement in a medical linear accelerator water tank. Background Technology

[0002] Radiation therapy is a local treatment method that uses radiation to treat tumors. The most common type is external beam radiation therapy, which directly uses radiation to treat the tumor site. Its goal is to maximize the safe use of radiation to treat the tumor while minimizing damage to nearby normal tissues and vital organs. Medical linear accelerators are the most widely used radiotherapy equipment in clinical practice. The radiation used in radiotherapy includes photon beams and electron beams. Medical linear accelerators use microwave electric fields to accelerate electrons to produce high-energy photon and electron beams. They feature high dose rates, short irradiation times, large irradiation fields, and good dose uniformity and stability, and are widely used in the treatment of primary or secondary tumors in multiple sites throughout the body.

[0003] Measuring the water absorption dose of the high-energy photon and electron beams emitted by the accelerator is a core aspect of accelerator quality control. It directly relates to the accuracy of the radiation dose received by patients, which in turn directly affects the therapeutic effect of tumor radiotherapy. The calibration of the accelerator's water output is performed at a specific depth in the water using an ionization chamber. Currently, the calibration method for the accelerator is as follows: the ionization chamber is fixed at a specific depth in a water tank made of plexiglass material with a volume greater than or equal to 30cm x 30cm x 30cm. The measurement point of the ionization chamber is positioned vertically relative to the irradiation center of the radiotherapy equipment. The effective measurement point position of the ionization chamber is calculated, and clean water is added to ensure that the depth from the water surface to the measurement point in the ionization chamber is the required depth.

[0004] However, when the ionization chamber is placed inside the water tank, it needs to be filled with clean water. Generally, the clean water is poured directly into the water tank through a bucket. At this time, the clean water is sloshing inside the water tank, and measurement cannot be performed. Measurement can only be performed after the clean water has settled, which usually takes several minutes. Therefore, it will delay the measurement efficiency. Therefore, in order to solve the above problems, an auxiliary device for dose measurement of the water tank of a medical linear accelerator is proposed. Utility Model Content

[0005] The purpose of this invention is to provide an auxiliary device for measuring the dosage of a water tank in a medical linear accelerator, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] As an optional solution of the auxiliary device for dose measurement of a medical linear accelerator water tank according to the present invention, the auxiliary device for dose measurement of a medical linear accelerator water tank includes a water tank, a fixing plate and an adjusting plate;

[0008] A fixed plate is fixedly connected to one side of the water tank. A rotating handle is rotatably connected to the top of the fixed plate. An adjusting plate is spirally connected to the outside of the rotating handle. A connecting rod is fixedly connected to one side of the adjusting plate. An anti-sway mechanism is fixedly connected to the other end of the connecting rod. Connecting plates are fixedly connected to both the front and back sides of one side of the anti-sway mechanism. A sliding frame is fixedly connected to the other end of each connecting plate.

[0009] The anti-sway mechanism includes an anti-sway frame, a rotating shaft, and a torsion spring. The top of the anti-sway frame is fixedly connected to a connecting rod. The rotating shaft is fixedly connected inside the anti-sway frame. The torsion spring is fixedly connected to the outside of the rotating shaft, and a rotating sleeve is fixedly connected to the other end of the torsion spring. An anti-sway membrane is provided on the outside of the rotating sleeve, and a traction rope is fixedly connected to the other end of the anti-sway membrane. A pulling rod is fixedly connected to the other end of the traction rope. A guide mechanism fixedly connected to the water tank is provided on one side of the pulling rod.

[0010] As an optional embodiment of the auxiliary device for measuring the dosage of a water tank in a medical linear accelerator according to the present invention, the connecting rod is Z-shaped, and the outer side of the lateral portion of the connecting rod is slidably connected to the water tank.

[0011] As an optional embodiment of the auxiliary device for measuring the dosage of a water tank in a medical linear accelerator as described in this utility model, the number of traction ropes is two sets, and the traction ropes are arranged in a front-to-back manner.

[0012] As an optional embodiment of the auxiliary device for measuring the dosage of a water tank in a medical linear accelerator as described in this utility model, the sliding frame is rotatably connected to a guide column, and a traction rope is provided on the outside of the guide column.

[0013] As an optional solution of the auxiliary device for measuring the dosage of a water tank in a medical linear accelerator according to the present invention, wherein: a sliding groove is provided on one side of the sliding frame, and a guide plate is slidably connected to the sliding frame through the sliding groove, and the outer side of the guide plate is fixedly connected to the water tank.

[0014] When the ionization chamber is placed inside the water tank, it needs to be filled with clean water. Generally, the clean water is poured directly into the water tank through a bucket. At this time, the clean water sloshes inside the water tank, and measurement work cannot be carried out. Measurement can only be carried out after the clean water has settled. It usually takes several minutes to settle, which delays the measurement efficiency. When in use, after pouring clean water into the water tank, the pull rod moves the traction rope, which pulls the anti-sloshing membrane. At this time, the anti-sloshing membrane is laid on the water surface, which can effectively and quickly achieve the purpose of stopping the water sloshing, facilitating subsequent measurement calibration work.

[0015] By rotating the handle, the adjusting plate moves up and down. Under the action of the connecting rod, the anti-sway mechanism, connecting plate, and sliding frame move, which can be adjusted for different water depths, expanding the range of applications. The guide plate ensures that the sliding frame slides stably.

[0016] As an optional solution for the auxiliary device for measuring the dosage of a water tank in a medical linear accelerator according to the present invention, the guiding mechanism includes a guide cylinder, a rotating rod, and a guide roller. The outer side of the guide cylinder is fixedly connected to the water tank. The rotating rod is fixedly connected inside the guide cylinder, and the guide roller is rotatably connected to the outer side of the rotating rod. A traction rope is provided on the outer side of the guide roller.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] When this utility model is in use, after pouring clean water into the water tank, the pull rod is pulled to move the traction rope, which in turn pulls the anti-sway membrane. At this time, the anti-sway membrane is laid on the water surface, which can effectively and quickly achieve the purpose of stopping the sway of clean water, making it convenient for subsequent measurement and calibration work.

[0019] After the water sloshing is stopped, the rotating sleeve is rotated and reset by the torsion spring. At this time, it is easy to store the anti-sloshing film inside the anti-sloshing frame to ensure that it will not affect subsequent work.

[0020] By rotating the handle, the adjusting plate moves up and down, which in turn moves the anti-sway mechanism, connecting plate, and sliding frame under the action of the connecting rod. This allows for adjustments to be made for different water depths, expanding the range of applications. The guide plate ensures that the sliding frame slides stably. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the anti-sway mechanism of this utility model;

[0023] Figure 3 This is a cross-sectional view of the sliding frame of this utility model;

[0024] Figure 4 This is a schematic diagram of the guiding mechanism of this utility model.

[0025] In the diagram: 1. Water tank; 2. Fixed plate; 3. Adjusting plate; 4. Rotating handle; 5. Connecting rod; 6. Anti-sway mechanism; 601. Anti-sway frame; 602. Rotating shaft; 603. Torsion spring; 604. Rotating sleeve; 605. Anti-sway membrane; 606. Traction rope; 7. Connecting plate; 8. Sliding frame; 9. Guide mechanism; 901. Guide cylinder; 902. Rotating rod; 903. Guide roller; 10. Guide plate; 11. Pull rod; 12. Guide column. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Example 1: Please refer to Figure 1 , Figure 2 and Figure 3 This utility model provides a technical solution:

[0028] An auxiliary device for measuring dosage in a water tank of a medical linear accelerator includes a water tank 1, a fixing plate 2, and an adjusting plate 3;

[0029] A fixed plate 2 is fixedly connected to one side of the water tank 1. A rotating handle 4 is rotatably connected to the top of the fixed plate 2. An adjusting plate 3 is screwed to the outside of the rotating handle 4. A connecting rod 5 is fixedly connected to one side of the adjusting plate 3. An anti-sway mechanism 6 is fixedly connected to the other end of the connecting rod 5. A connecting plate 7 is fixedly connected to both the front and rear sides of one side of the anti-sway mechanism 6. A sliding frame 8 is fixedly connected to the other end of each connecting plate 7.

[0030] The aforementioned anti-sway mechanism 6 includes an anti-sway frame 601, a rotating shaft 602, and a torsion spring 603. The top of the anti-sway frame 601 is fixedly connected to the connecting rod 5. The rotating shaft 602 is fixedly connected inside the anti-sway frame 601. The torsion spring 603 is fixedly connected to the outside of the rotating shaft 602. The other end of the torsion spring 603 is fixedly connected to a rotating sleeve 604. An anti-sway membrane 605 is provided on the outside of the rotating sleeve 604. The other end of the anti-sway membrane 605 is fixedly connected to a traction rope 606. The other end of the traction rope 606 is fixedly connected to a pulling rod 11. A guide mechanism 9, which is fixedly connected to the water tank 1, is provided on one side of the pulling rod 11.

[0031] The connecting rod 5 is Z-shaped, and the outer side of the lateral portion of the connecting rod 5 is slidably connected to the water tank 1.

[0032] The aforementioned traction rope 606 consists of two sets, and the traction rope 606 are arranged in a front-to-back configuration.

[0033] The sliding frame 8 is rotatably connected to a guide post 12, and a traction rope 606 is provided on the outside of the guide post 12.

[0034] A sliding groove is provided on one side of the sliding frame 8, and a guide plate 10 is slidably connected to the sliding frame 8 through the sliding groove. The outer side of the guide plate 10 is fixedly connected to the water tank 1.

[0035] When the ionization chamber is placed inside the water tank, it needs to be filled with clean water. Generally, the clean water is poured directly into the water tank through a bucket. At this time, the clean water sloshes inside the water tank, and measurement work cannot be carried out. Measurement can only be carried out after the clean water has settled. It usually takes several minutes to settle, which will delay the measurement efficiency. When in use, after pouring clean water into the water tank 1, the pull rod 11 is pulled to move the traction rope 606. The traction rope 606 can pull the anti-sloshing membrane 605. At this time, the anti-sloshing membrane 605 is laid on the water surface, which can effectively and quickly achieve the purpose of stopping the water sloshing, which is convenient for subsequent measurement calibration work.

[0036] In this embodiment, after the water sloshing is stopped, the rotating sleeve 604 is rotated and reset by the torsion spring 603. At this time, it is convenient to store the anti-sloshing film 605 inside the anti-sloshing frame 601 to ensure that it will not affect subsequent work.

[0037] By rotating the handle 4, the adjusting plate 3 moves up and down. Under the action of the connecting rod 5, the anti-sway mechanism 6, the connecting plate 7, and the sliding frame 8 move. This can be adjusted for different water depths, expanding the range of applications. The guide plate 10 ensures that the sliding frame 8 slides stably.

[0038] The connecting rod 7 is set to ensure that the sliding frame 8 moves up and down synchronously with the anti-sway mechanism 6. There are two sets of traction ropes 606. One end of the traction rope 606 is connected to the front and rear sides of the anti-sway membrane 605 respectively, and the other end of the traction rope 606 is connected to the pulling rod 11 to stabilize the anti-sway membrane 605.

[0039] The outer side of the connecting rod 5 is slidably connected to the vertical groove on the side of the water tank 1, which is used to stably drive the anti-sway mechanism 6 to adjust the height.

[0040] Example 2: This example is an improvement on Example 1. Please refer to Example 1. Figure 4Specifically, the aforementioned guiding mechanism 9 includes a guide cylinder 901, a rotating rod 902, and a guide roller 903. The outer side of the guide cylinder 901 is fixedly connected to the water tank 1. The rotating rod 902 is fixedly connected inside the guide cylinder 901, and the guide roller 903 is rotatably connected to the outer side of the rotating rod 902. A traction rope 606 is provided on the outer side of the guide roller 903.

[0041] The arrangement of the guide post 12 and the guide roller 903 ensures that the traction rope 606 is used to drive the anti-sway membrane 606 to move, and the outer diameter of the pulling rod 11 is larger than the inside of the guide cylinder 901 to prevent the pulling rod 11 from sliding into the inside of the guide cylinder 901.

[0042] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An auxiliary device for medical linear accelerator water tank dose measurement, characterized in that: it comprises a water tank (1), a fixed plate (2) and an adjusting plate (3); one side of the water tank (1) is fixedly connected with the fixed plate (2), the top of the fixed plate (2) is rotatably connected with a rotating handle (4), the outer side of the rotating handle (4) is spirally connected with the adjusting plate (3), one side of the adjusting plate (3) is fixedly connected with a connecting rod (5), the other end of the connecting rod (5) is fixedly connected with a anti-shaking mechanism (6), the front and back sides of one side of the anti-shaking mechanism (6) are both fixedly connected with a connecting plate (7), the other end of the connecting plate (7) is both fixedly connected with a sliding frame (8); the anti-shaking mechanism (6) comprises an anti-shaking frame (601), a rotating shaft (602) and a torsion spring (603), the top of the anti-shaking frame (601) is fixedly connected with the connecting rod (5), the inside of the anti-shaking frame (601) is fixedly connected with the rotating shaft (602), the outer side of the rotating shaft (602) is fixedly connected with the torsion spring (603), the other end of the torsion spring (603) is fixedly connected with a rotating sleeve (604), the outer side of the rotating sleeve (604) is provided with an anti-shaking film (605), the other end of the anti-shaking film (605) is fixedly connected with a traction rope (606), the other end of the traction rope (606) is fixedly connected with a pulling rod (11), one side of the pulling rod (11) is provided with a guide mechanism (9) fixedly connected with the water tank (1). The connecting rod (5) is Z-shaped, and the lateral part of the connecting rod (5) is slidingly connected with the water tank (1). The number of the traction ropes (606) is two groups, and the traction ropes (606) are arranged front and back. The inside of the sliding frame (8) is rotatably connected with a guide column (12), the outer side of the guide column (12) is provided with the traction rope (606).

2. The auxiliary device for water tank dose measurement of a medical linear accelerator according to claim 1, characterized in that: One side of the sliding frame (8) is provided with a sliding groove, the sliding frame (8) is slidingly connected with a guide plate (10) through the sliding groove, the outer side of the guide plate (10) is fixedly connected with the water tank (1).

3. The auxiliary device for water tank dose measurement of a medical linear accelerator according to claim 1, characterized in that: The guide mechanism (9) comprises a guide cylinder (901), a rotating rod (902) and a guide roller (903), the outer side of the guide cylinder (901) is fixedly connected with the water tank (1), the inside of the guide cylinder (901) is fixedly connected with the rotating rod (902), the outer side of the rotating rod (902) is rotatably connected with the guide roller (903), the outer side of the guide roller (903) is provided with the traction rope (606).

4. The auxiliary device for water tank dose measurement of a medical linear accelerator according to claim 1, characterized in that: ​ 5. The auxiliary device for water tank dose measurement of a medical linear accelerator according to claim 1, characterized in that: ​ 6. The auxiliary device for water tank dose measurement of a medical linear accelerator according to claim 1, characterized in that: ​

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