A cancer proton heavy particle radiotherapy positioning auxiliary device

Abstract

The utility model discloses a kind of cancer proton heavy ion radiotherapy positioning auxiliary equipment, it is related to positioning auxiliary equipment technical field, including: base, first hydraulic cavity is equipped in its inside middle part, liftable hydraulic disc is connectable in the first hydraulic cavity;Supporting rod, its bottom end is fixed to the hydraulic disc top end, top end is connected with the load plate for carrying patient;Symmetrically set in the side tank of base both sides, each side tank is equipped with the buffer hydraulic cavity being communicated with the first hydraulic cavity, the buffer hydraulic cavity top is connected with multiple second hydraulic cavities;The utility model patient is more, the pressure that hydraulic disc bears is greater, the pressure difference in the first hydraulic cavity is greater, the force that is stronger to second hydraulic cavity push piston and positioning rod is transmitted, the clamping force of positioning rod to patient is greater;This characteristic makes equipment can adapt to patient of different weight, especially applicable to the generally larger weight American population, guarantee the stability and reliability of positioning.

Description

Technical Field

[0001] This utility model relates to the field of positioning auxiliary equipment technology, specifically a positioning auxiliary equipment for proton and heavy ion radiotherapy for cancer. Background Technology

[0002] Cancer poses a serious threat to human health and is a medical challenge that urgently needs to be overcome worldwide. Proton and heavy ion radiotherapy, as an advanced cancer treatment method, leverages its unique physical properties to deliver high doses of radiation to tumor tissue while minimizing damage to surrounding normal tissues. This significantly improves cancer treatment outcomes and reduces the risk of post-treatment complications, thus gaining increasing attention in clinical practice.

[0003] However, the precision required for proton and heavy ion radiotherapy places extremely high demands on patient localization. Traditional localization methods often employ simple fixation devices or manual assistance, which have numerous drawbacks. On the one hand, these methods struggle to accurately adapt to the different physical characteristics of patients. For patients with unique body types or complex conditions, the localization error is significant, causing the radiation to fail to accurately target the tumor site. This not only affects the treatment outcome but may also lead to serious adverse reactions due to accidental irradiation of normal tissue. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a positioning auxiliary device for proton and heavy ion radiotherapy in cancer.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows:

[0006] A positioning aid for proton and heavy ion radiotherapy in cancer, comprising:

[0007] The base has a first hydraulic chamber in the middle of its inner side, and a hydraulic disc is connected to the first hydraulic chamber in a way that can be raised and lowered.

[0008] A support rod, the bottom end of which is fixed to the top of the hydraulic plate, and the top end is connected to a support plate for supporting the patient;

[0009] The side boxes are symmetrically arranged on both sides of the base. Each side box is provided with a buffer hydraulic chamber that communicates with the first hydraulic chamber. The top of the buffer hydraulic chamber is connected to multiple second hydraulic chambers.

[0010] Multiple pistons are slidably disposed in the second hydraulic chamber, and a vertical positioning rod is fixed to the end of the piston rod of each piston. The bearing plate is provided with a moving groove for the positioning rod to move.

[0011] The liquids in the first hydraulic chamber, the buffer hydraulic chamber, and the second hydraulic chamber are interconnected, and the lifting and lowering of the hydraulic plate is driven by the liquid pressure to move the positioning rod in the moving groove.

[0012] Preferably, there are multiple return springs, evenly distributed between the hydraulic disc and the bottom wall of the first hydraulic chamber, to provide elastic return force for the hydraulic disc.

[0013] Preferably, a hydraulic cylinder for driving the hydraulic disc to rise and fall is installed at the bottom of the side box of the base.

[0014] Preferably, there are two hydraulic cylinders, symmetrically arranged at the bottom of the side boxes on both sides of the base, and the piston rods of the hydraulic cylinders are connected to the hydraulic disc for transmission.

[0015] Preferably, a rubber sleeve is fitted on the positioning rod, and the outer diameter of the rubber sleeve is smaller than the width of the moving groove.

[0016] Preferably, the moving groove is a long strip-shaped through groove, which is distributed at intervals along the length of the bearing plate, and the extending direction of the moving groove is perpendicular to the lifting direction of the hydraulic plate.

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

[0018] 1. Precise positioning: When a patient enters the support plate, the pressure change caused by their weight is transmitted through the hydraulic system, which pushes the positioning rod to move flexibly in the moving slot; the positioning rod can automatically adjust its position according to the patient's body contour, so as to achieve precise positioning of specific parts of the patient's body, ensuring that the radiation can accurately act on the lesion site in proton and heavy ion radiotherapy for cancer.

[0019] 2. Adaptive clamping force: The greater the patient's weight, the greater the pressure on the hydraulic plate, the greater the pressure difference in the first hydraulic chamber, and the stronger the force transmitted to the second hydraulic chamber to push the piston and positioning rod, resulting in a greater clamping force of the positioning rod on the patient. This feature allows the device to adapt to patients of different weights, especially suitable for the generally heavier American population, ensuring the stability and reliability of positioning.

[0020] 3. Convenient operation: The equipment is equipped with two hydraulic cylinders symmetrically arranged at the bottom of the side box on the patient's side of the base. When the user needs to enter the support plate, the hydraulic cylinder is activated to retract its piston rod, which can drive the side box down. After the side box is lowered, the positioning rod can be moved down to the bottom of the support plate to eliminate the obstruction to the user's entry. It can also be used as a step to help the user easily climb onto the support plate, which greatly improves the convenience of equipment operation and facilitates patient placement.

[0021] 4. Patient protection: The positioning rod is fitted with a rubber sleeve with an outer diameter smaller than the width of the moving groove. When the positioning rod comes into contact with the patient's body, the soft material of the rubber sleeve can provide cushioning protection, avoiding unnecessary damage to the patient due to rigid contact. This reflects the consideration of patient safety and comfort in the design of the equipment.

[0022] 5. Flexible positioning range: The moving grooves on the support plate are long strip-shaped through grooves, distributed at intervals along the length of the support plate, and the extension direction is perpendicular to the lifting direction of the hydraulic plate. This design allows the positioning rod to perform lateral positioning of different parts of the patient's body at multiple positions, greatly expanding the positioning range of the equipment and meeting the diverse positioning requirements of different patients and different treatment needs. Attached Figure Description

[0023] The disclosure of this utility model is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings, the same reference numerals are used to refer to the same parts. Wherein:

[0024] Figure 1 This is a three-dimensional structural schematic diagram of the positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to this utility model.

[0025] Figure 2 A schematic diagram of the moving slot for the positioning auxiliary device for proton and heavy ion radiotherapy of cancer according to this utility model;

[0026] Figure 3 This is a side view of the positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to this utility model;

[0027] Figure 4 This is an AA cross-sectional view of the positioning auxiliary device for proton and heavy ion radiotherapy of cancer according to this utility model.

[0028] The diagram shows the following components: 1. Base; 2. First hydraulic chamber; 3. Hydraulic disc; 4. Support rod; 5. Bearing plate; 6. Side box; 7. Buffer hydraulic chamber; 8. Second hydraulic chamber; 9. Piston; 10. Positioning rod; 11. Moving groove; 12. Hydraulic cylinder; 13. Return spring. Detailed Implementation

[0029] It is readily understood that, based on the technical solution of this utility model, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of this utility model. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative descriptions of the technical solution of this utility model and should not be considered as the entirety of this utility model or as limitations or restrictions on the technical solution of this utility model.

[0030] Example

[0031] like Figure 1-4 As shown, a positioning aid device for proton and heavy ion radiotherapy for cancer includes:

[0032] Base 1: Base 1 serves as the basic support for the entire equipment. The first hydraulic chamber 2 is located in the middle of its inner side, which stably and reliably supports other components of the equipment, ensuring the stability of the equipment during use.

[0033] First hydraulic chamber 2 and hydraulic plate 3: The hydraulic plate 3 is vertically connected inside the first hydraulic chamber 2. The lifting and lowering movement of the hydraulic plate 3 within the first hydraulic chamber 2 is the key starting point for the entire equipment to achieve its positioning function.

[0034] Support rod 4 and bearing plate 5: The bottom end of support rod 4 is firmly fixed to the top end of hydraulic disc 3, while its top end is connected to bearing plate 5. Bearing plate 5 is used to support the patient. When hydraulic disc 3 rises and falls, the support rod 4 drives bearing plate 5 to rise and fall synchronously, providing a stable support platform for the patient.

[0035] Side chambers 6 and internal hydraulic chambers: The side chambers 6, symmetrically arranged on both sides of the base 1, play a crucial role in the functional linkage of the equipment. Each side chamber 6 contains a buffer hydraulic chamber 7, which is interconnected with the first hydraulic chamber 2. Simultaneously, multiple second hydraulic chambers 8 are connected to the top of the buffer hydraulic chamber 7. The liquids within the first hydraulic chamber 2, the buffer hydraulic chamber 7, and the second hydraulic chambers 8 are interconnected, forming a complete hydraulic linkage system.

[0036] Piston 9 and positioning rod 10: Multiple pistons 9 are slidably disposed within the second hydraulic chamber 8. Each piston 9 has a vertical positioning rod 10 fixed to the end of its piston rod. These positioning rods 10 are closely related to the patient's positioning. A movable groove 11 is specially provided on the support plate 5 for the positioning rods 10 to move within the groove 11, thereby achieving precise positioning of specific parts of the patient's body.

[0037] Return spring 13: Multiple return springs 13 are evenly distributed between the hydraulic plate 3 and the bottom wall of the first hydraulic chamber 2. The main function of the return springs 13 is to provide elastic return force to the hydraulic plate 3, ensuring that after the equipment completes one positioning operation, the hydraulic plate 3 can be smoothly returned to the initial position for the next positioning operation.

[0038] Hydraulic cylinder 12: Two hydraulic cylinders 12 are installed at the bottom of the side box 6 of the base 1 to drive the hydraulic plate 3 to rise and fall. The hydraulic cylinders 12 are symmetrically arranged at the bottom of the side box 6 on the patient-use side of the base 1, and the piston rods of the hydraulic cylinders 12 are connected to the hydraulic plate 3. Through the operation of the hydraulic cylinders 12, the rising and falling height of the side box 6 can be precisely controlled. When the user needs to enter the support plate 5, the side box 6 is lowered, causing the positioning rod 10 to move down to the bottom of the support plate 5. At this time, the side box 6 can also be used as a step for the user to enter the support plate 5, and the positioning rod 10 will not affect the patient's use.

[0039] Other details: The positioning rod 10 is fitted with a rubber sleeve, and the outer diameter of the rubber sleeve is smaller than the width of the moving groove 11. This design ensures the smooth movement of the positioning rod 10 within the moving groove 11, and the soft material of the rubber sleeve provides a certain degree of cushioning protection when in contact with the patient's body, avoiding unnecessary injury. The moving groove 11 is a long, narrow channel, spaced along the length of the support plate 5, and its extension direction is perpendicular to the lifting direction of the hydraulic plate 3. This design can meet the needs of lateral positioning of different parts of the patient's body.

[0040] When the patient enters the support plate 5, the support plate 5 moves downward due to the patient's weight. The downward movement of the support plate 5 is transmitted through the support rod 4, pushing the hydraulic plate 3 down within the first hydraulic chamber 2. Since the liquids in the first hydraulic chamber 2, the buffer hydraulic chamber 7, and the second hydraulic chamber 8 are interconnected, forming a closed and connected hydraulic system, as the hydraulic plate 3 descends, the space within the first hydraulic chamber 2 decreases, the liquid is compressed, and the pressure within the chamber increases rapidly.

[0041] Under the influence of the pressure difference, the liquid in the first hydraulic chamber 2 flows into the buffer hydraulic chamber 7 through the pipe connected to the buffer hydraulic chamber 7. The liquid volume in the buffer hydraulic chamber 7 increases, further increasing the pressure, which in turn transfers the liquid to the second hydraulic chamber 8 through the pipe connected to the top of the buffer hydraulic chamber 7. Inside the second hydraulic chamber 8, the increased liquid pressure pushes the piston 9 to move further inside. Since each piston 9 has a vertical positioning rod 10 fixed to the end of its piston rod, the positioning rod 10 moves accordingly within the moving groove 11 on the support plate 5 towards the center of the support plate 5.

[0042] During the positioning process, when the positioning rod 10 moves, if it encounters an obstruction from the patient's body, the positioning rod 10 stops moving; while the unobstructed positioning rod 10 continues to move under the continuous action of liquid pressure until it contacts the patient's body. As more positioning rods 10 come into contact with the patient's body, they form an encirclement around the patient, achieving clamping and positioning. It is worth noting that the greater the patient's weight, the greater the pressure on the hydraulic plate 3, the greater the pressure difference generated in the first hydraulic chamber 2, and the stronger the force transmitted to the second hydraulic chamber 8 to push the piston 9 and the positioning rod 10, thus making the clamping force of the positioning rod 10 on the patient greater. This characteristic is particularly suitable for the generally heavier American population. At the same time, the return spring 13, which is evenly distributed between the hydraulic plate 3 and the bottom wall of the first hydraulic chamber 2, is compressed during the descent of the hydraulic plate 3, storing elastic potential energy. When the positioning operation is completed and reset is required, the return spring 13 releases the elastic potential energy, providing an elastic reset force to assist the hydraulic plate 3 in returning to its initial position faster and more smoothly, preparing for the next positioning operation.

[0043] When the user needs to enter the support plate 5, the hydraulic cylinder 12 is activated, causing its piston rod to retract. The piston rod of the hydraulic cylinder 12 is fixedly connected to the side chamber 6, so the retraction of the piston rod causes the side chamber 6 to descend. The descent of the side chamber 6 causes the positioning rod 10 to move downwards. As the side chamber 6 continues to descend, the positioning rod 10 eventually moves to the bottom of the support plate 5, no longer obstructing the user's entry. Simultaneously, the side chamber 6, located on the patient's side of the base 1, descends to a suitable position under the action of the hydraulic cylinder 12. At this point, the descended side chamber 6 can be used as a step, allowing the user to more easily climb onto the support plate 5 and complete the patient placement. Afterwards, following the above positioning operation procedure, the hydraulic linkage system of the equipment is used to achieve precise patient positioning to meet the positioning requirements of proton and heavy ion radiotherapy for cancer.

[0044] The technical scope of this utility model is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the protection scope of this utility model.

Claims

1. A positioning aid device for proton and heavy ion radiotherapy in cancer, characterized in that, include: The base (1) has a first hydraulic chamber (2) in the middle of its inner side, and a hydraulic disc (3) is connected to the first hydraulic chamber (2) in a height-reducible manner. The support rod (4) has its bottom end fixed to the top of the hydraulic disc (3), and its top end is connected to a support plate (5) for supporting the patient. The side boxes (6) are symmetrically arranged on both sides of the base (1). Each side box (6) is provided with a buffer hydraulic chamber (7) that communicates with the first hydraulic chamber (2). The top of the buffer hydraulic chamber (7) is connected to a plurality of second hydraulic chambers (8). Multiple pistons (9) are slidably disposed in the second hydraulic chamber (8). Each piston (9) has a vertical positioning rod (10) fixed at the end of its piston rod. The bearing plate (5) is provided with a moving groove (11) for the positioning rod (10) to move. The liquids in the first hydraulic chamber (2), the buffer hydraulic chamber (7) and the second hydraulic chamber (8) are interconnected, and the lifting and lowering of the hydraulic plate (3) drives the positioning rod (10) to move in the moving groove (11) through the linkage of liquid pressure.

2. The positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to claim 1, characterized in that: It also includes multiple return springs (13), which are evenly distributed between the hydraulic disc (3) and the bottom wall of the first hydraulic chamber (2) to provide elastic return force for the hydraulic disc (3).

3. The positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to claim 2, characterized in that: The bottom end of the side box (6) of the base (1) is equipped with a hydraulic cylinder (12) for driving the hydraulic plate (3) to rise and fall.

4. The positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to claim 3, characterized in that: There are two hydraulic cylinders (12), which are symmetrically arranged at the bottom of the side boxes (6) on both sides of the base (1), and the piston rod of the hydraulic cylinder (12) is connected to the hydraulic plate (3) for transmission.

5. The positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to claim 4, characterized in that: A rubber sleeve is fitted on the positioning rod (10), and the outer diameter of the rubber sleeve is smaller than the width of the moving groove (11).

6. The positioning auxiliary device for proton and heavy ion radiotherapy for cancer according to claim 5, characterized in that: The moving groove (11) is a long strip-shaped through groove, which is distributed at intervals along the length of the bearing plate (5), and the extension direction of the moving groove (11) is perpendicular to the lifting direction of the hydraulic plate (3).

Images