After-loading radiotherapy equipment
By introducing a shielding structure and imaging system into the afterloading radiotherapy equipment, the problems of equipment deployment space and radiation leakage have been solved, enabling rapid deployment and efficient radiotherapy in small medical institutions, and meeting the needs of emergency situations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- OUR UNITED CORP
- Filing Date
- 2025-05-14
- Publication Date
- 2026-04-24
AI Technical Summary
Existing afterloading radiotherapy equipment requires large, fixed sites and long construction periods, making it difficult to deploy quickly in small medical institutions or in emergency situations. Furthermore, the risk of radiation leakage from the radiation source is high, affecting the effectiveness of radiotherapy.
Design a brachytherapy device that includes a shielding structure to enclose the radiotherapy unit and bed in an internal space. Combine this with an imaging system for real-time imaging and radiotherapy plan adjustment, enabling rapid deployment and radiation protection.
It allows for rapid deployment in small medical facilities, reduces the risk of radiation leakage, improves the effectiveness and efficiency of radiotherapy, and adapts to emergency needs.
Smart Images
Figure CN224156192U_ABST
Abstract
Description
Technical Field
[0001] This disclosure relates to the field of medical device technology, and more specifically, to afterloading radiotherapy equipment. Background Technology
[0002] Brachytherapy is a medical device that delivers radiation sources directly into or near tumor tissue to precisely kill cancer cells at close range.
[0003] In the process of using afterloading radiotherapy equipment, the applicator is pre-placed in a natural cavity or canal (e.g., uterine cavity, uterine canal, etc.) close to the tumor tissue in the target patient, or implanted into the tumor body, for example, by puncture or surgery. Then, the target area in the target patient's body is scanned and located using CT (Computed Tomography) to obtain image data including the tumor anatomy and the applicator. Then, the target area is delineated and the applicator is reconstructed based on the image data, and a radiotherapy plan is developed and evaluated based on the reconstruction results. Finally, the applicator is connected to the afterloading radiotherapy equipment to deliver the radiation source to the target area for radiotherapy according to the radiotherapy plan.
[0004] The radiation sources used in afterloading radiotherapy, such as iridium-192 and iodine-125, can release radiation that can harm human health and the environment. Currently, afterloading radiotherapy equipment is usually placed in a machine room, with the radiation from the radiation source shielded by the walls of the machine room during the afterloading radiotherapy process.
[0005] However, the construction of a computer room requires a large and fixed site, which is difficult for small medical institutions such as community hospitals and clinics to provide sufficient construction space, making it difficult to deploy afterloading radiotherapy equipment. In addition, the construction period of the computer room is long, and its fixed location after completion makes it difficult to quickly deploy afterloading radiotherapy equipment. Utility Model Content
[0006] This section provides a general overview of this disclosure, rather than a full disclosure of the entire scope or all features of this disclosure.
[0007] One object of this disclosure is to provide an afterloading radiotherapy device that can be deployed in smaller or non-fixed sites.
[0008] Another objective of this disclosure is to provide a rapidly deployable afterloading radiotherapy device.
[0009] To achieve at least one of the above objectives, an afterloading radiotherapy device is provided, comprising:
[0010] Afterloading therapy devices are used to deliver a stored source of radiation into the body of a target individual.
[0011] Radiotherapy bed, including a bed board for supporting the target object; and
[0012] A shielding structure is used to enclose the afterloading radiotherapy device and the bed board within its internal space to prevent radiation from the radiation source from leaking to the outside.
[0013] In some implementations, the shielding structure can be configured to enclose the entire afterloading radiotherapy device and radiotherapy bed within an internal space.
[0014] In some embodiments, the shielding structure may include a first shielding portion and a second shielding portion, which are two separate parts that can be connected to each other to define an internal space. At least one of the first shielding portion and the second shielding portion is movable to open and close the internal space.
[0015] In some implementations, the first shielding portion is movable to cover the end region of the bed board and expose the end region to the external environment.
[0016] In some embodiments, the afterloading radiotherapy device may also include an imaging system disposed in the internal space and used to image a target object on the bed.
[0017] In some implementations, the imaging system may be mounted on the inner wall of the shielding structure.
[0018] In some embodiments, the imaging system may include an imaging device and a first movable member, the imaging device being used to acquire an image of a target object, and the imaging device being movable relative to the target object via the first movable member.
[0019] In some embodiments, the first movable member may include a ring track extending around the bed board, and the imaging device is rotatable along the ring track about the target object; and / or,
[0020] The first movable component may include a linear track that extends along the length or width of the bed board, and the imaging device is capable of moving along the linear track.
[0021] In some implementations, the afterloading radiotherapy device may be positioned above the bed board or on one side of the bed board in its width direction.
[0022] In some implementations, the afterloading radiotherapy device can be mounted on the inner wall of the shielding structure.
[0023] According to the above technical solution, by incorporating a shielding structure into the afterloading radiotherapy equipment, and by enclosing the afterloading radiotherapy device and the radiotherapy bed within its internal space to prevent radiation leakage from the radiation source during afterloading radiotherapy, the space occupied by the entire radiotherapy area can be minimized. Furthermore, the afterloading radiotherapy equipment can be decoupled from the deployment site, allowing it to be deployed in smaller or non-fixed locations. In addition, the shielding structure has a shorter manufacturing cycle and can be easily relocated afterloading radiotherapy equipment, enabling rapid deployment. Attached Figure Description
[0024] The features and advantages of embodiments of the present disclosure will become more readily understood from the following description with reference to the accompanying drawings. The drawings are not drawn to scale and some features may be enlarged or reduced to show details of specific components. In the drawings:
[0025] Figure 1 This is a schematic diagram of the structure of a afterloading radiotherapy device according to the first embodiment of the present disclosure.
[0026] Figure 2 This is a schematic diagram of the structure of a afterloading radiotherapy device according to the second embodiment of the present disclosure.
[0027] Figure 3 This is a schematic diagram of the structure of an afterloading radiotherapy device according to the third embodiment of this disclosure.
[0028] Figure 4 for Figure 3 The image shows an end view of the afterloading radiotherapy device.
[0029] Figure 5 for Figure 3 The image shows an oblique perspective view of the afterloading radiotherapy device.
[0030] Figure 6 for Figure 3 The image shows another end view of the afterloading radiotherapy device, in which the first shielding portion is removed from the second shielding portion.
[0031] Figure 7 This is a schematic diagram of the structure of a afterloading radiotherapy device according to the fourth embodiment of this disclosure.
[0032] Figure 8 for Figure 7 The image shows a perspective view of the end side of the afterloading radiotherapy device.
[0033] Figure 9 This is a schematic diagram of the structure of an afterloading radiotherapy device according to the fifth embodiment of this disclosure.
[0034] Figure 10 for Figure 9The image shows a perspective view of the end side of the afterloading radiotherapy device.
[0035] Figure 11 This is an end-side perspective view of a afterloading radiotherapy device according to the sixth embodiment of this disclosure.
[0036] Figure 12 This is a schematic diagram of the structure of a afterloading radiotherapy device according to the seventh embodiment of this disclosure.
[0037] Figure 13 This is a schematic diagram of the structure of an afterloading radiotherapy device according to the eighth embodiment of this disclosure.
[0038] In the accompanying drawings, the same or corresponding technical features or components are represented by the same or corresponding reference numerals. Detailed Implementation
[0039] The present disclosure will now be described in detail with reference to the accompanying drawings and exemplary embodiments. It should be noted that the following detailed description of the present disclosure is for illustrative purposes only and is not intended to limit the scope of the disclosure.
[0040] It should be noted that, for clarity, not all features of a particular embodiment are described or shown in the specification and drawings. Furthermore, to avoid unnecessary details obscuring the technical solutions of interest in this disclosure, only the device structure closely related to the technical solutions of this disclosure is described and shown in the specification and drawings, while other details that are not closely related to the technical content of this disclosure and are known to those skilled in the art are omitted.
[0041] As mentioned earlier, the construction of a radiotherapy room requires a large and fixed site. Small medical institutions such as community hospitals and clinics often find it difficult to allocate enough space to build such a room, making it difficult to deploy afterloading radiotherapy equipment within these institutions. In such cases, patients may need to frequently travel between the community hospital and a large hospital, significantly increasing their radiotherapy costs. Moreover, radiotherapy at large hospitals often involves waiting lists, and due to the short window for cancer radiotherapy, this can lead to delays in the timing of treatment.
[0042] Furthermore, the construction period for computer rooms is long, and their location is fixed once completed. This means that it is impossible to build a computer room immediately or relocate an existing one, making it difficult to rapidly deploy afterloading radiotherapy equipment. This is particularly disadvantageous in emergency situations, such as natural disasters or public health emergencies.
[0043] The above-mentioned problems can be solved by the afterloading radiotherapy device according to the embodiments of this disclosure. Hereinafter, reference will be made to... Figures 1 to 13 The following describes in detail the afterloading radiotherapy device according to embodiments of the present disclosure.
[0044] First, refer to Figure 1 The diagram schematically illustrates an afterloading radiotherapy device 1 according to an embodiment of the present disclosure.
[0045] The afterloading radiotherapy equipment 1 includes an afterloading radiotherapy device 10, a radiotherapy bed 20, and a shielding structure 30.
[0046] The afterloading radiotherapy device 10 is used to deliver a stored radioactive source into the body of the target.
[0047] For example, such as Figure 1 As shown, the afterloading radiotherapy device 10 may include a radiation source storage unit 100 and a delivery tube 110. The radiation source storage unit 100 is used to store radiation sources therein to achieve a reserve of radiation sources during afterloading radiotherapy. The radiation source storage unit 100 may be, for example, a shielded container made of a shielding material such as lead alloy or tungsten alloy to shield the radiation from the radiation source inside when sealed. The delivery tube 110 is used to connect to the radiation source storage unit 100 to deliver the radiation source stored in the radiation source storage unit 100 into the body of the target subject. In the body of the target subject, the delivery tube 110 may be further connected to an applicator (not shown) pre-placed in the body of the target subject so that the radiation source is ultimately accurately delivered to the target area. It should be noted that the target subject may be a patient or a phantom used to simulate a patient.
[0048] The radiotherapy bed 20 includes a bed board 210 for supporting the target object.
[0049] During radiotherapy, the target subject is positioned on the bed board 210 in a lying or sitting position so that radiotherapy can be administered via the afterloading radiotherapy device 10. The bed board 210 is typically rectangular; however, it can also be any other suitable shape.
[0050] The shielding structure 30 is used to enclose the bed board 210 of the afterloading radiotherapy device 10 and the radiotherapy bed 20 in its internal space 30a to prevent radiation from the radiation source from leaking to the outside.
[0051] The shielding structure 30 may be made of iron, iron alloy, lead alloy, or any other suitable shielding material, and is not limited thereto. Exemplarily, when radiotherapy is to be performed, the target object may enter the internal space 30a of the shielding structure 30 through an inlet or outlet provided on the shielding structure 30, such as a closable door, to receive radiotherapy on the bed board 210 of the radiotherapy bed 20, and leave the internal space 30a through the inlet or outlet after the radiotherapy is completed.
[0052] In this embodiment, since the shielding structure 30 of the afterloading radiotherapy device 1 can enclose the afterloading radiotherapy device 10 and the bed board 210 of the radiotherapy bed 20 within its internal space 30a, leakage of radiation from the radiation source during afterloading radiotherapy can be prevented. Therefore, the space occupied by the entire area enclosed by the shielding structure 30, i.e., the entire area used for radiotherapy, can be minimized, thus preventing the area from occupying an excessively large space. Furthermore, compared to a fixed-location machine room built at a fixed site, the shielding structure 30 is directly integrated into the afterloading radiotherapy device, freeing the afterloading radiotherapy device from the binding of the deployment site, so that the deployment of the afterloading radiotherapy device does not require a fixed site. As a result, the afterloading radiotherapy device can be more easily deployed in small medical institutions such as community hospitals and clinics with smaller or non-fixed spaces, thereby making radiotherapy more convenient for the target patients.
[0053] Moreover, as an equipment component, the manufacturing cycle of the shielding structure 30 is typically much shorter than the construction cycle of the machine room; and compared to the machine room, whose location is fixed after construction, the shielding structure 30 is integrated into the afterloading radiotherapy equipment, allowing for easy relocation of the afterloading radiotherapy equipment. This enables rapid deployment of the afterloading radiotherapy equipment, which is particularly advantageous in emergency situations, facilitating rapid treatment of the target patient.
[0054] It is conceivable that, for example Figure 1 As shown, the afterloading radiotherapy device 10 may further include a receiver tray 120. The receiver tray 120 is connected between the radiation source storage unit 100 and the delivery tube 110 for delivering the radiation source stored in the radiation source storage unit 100 to the delivery tube 110. The afterloading radiotherapy device 10 may also include a receiver tray support 130 for supporting and fixing the receiver tray 120. It is conceivable that the afterloading radiotherapy device 10 may also include other components used for delivering the radiation source into the target body, such as a drive mechanism for driving the radiation source along a preset path, a monitoring device for monitoring the radiation source delivery metering, etc.
[0055] It is also conceivable that, for example Figure 1 As shown, the radiotherapy bed 20 may also include a support portion 220 for supporting the bed board 210 from below.
[0056] It is conceivable that, for example Figure 2 As shown, the shielding structure 30 can enclose only the bed board 210 of the afterloading radiotherapy device 10 and the treatment bed 20 within the internal space 30a. In this case, the other parts of the treatment bed 20 are located outside the shielding structure 30. Exemplarily, as... Figure 2As shown, the shielding structure 30 can cover the lower surface of the bed board 210, and the support portion 220 for supporting the bed board 210 can support the bed board 210 from below by contacting the shielding structure 30 from the outside.
[0057] However, it is conceivable that, as Figure 1 As shown, the shielding structure 30 can be configured to enclose the entire afterloading radiotherapy device 10 and radiotherapy bed 20 in its internal space 30a.
[0058] In other words, the shielding structure 30 not only encloses the bed board 210 of the radiotherapy bed 20 in the internal space 30a, but also encloses other parts of the radiotherapy bed 20, such as the support part 220, in the internal space 30a. In this way, the bed board 210 can move relative to the support part 220 in at least three dimensions, which can also reduce the risk of radiation leakage.
[0059] Other parts of the radiotherapy bed 20, such as the support portion 220, may be connected to the bed board 210 and may be permeable to radiation from the radiation source. In this case, it would be more convenient to enclose the bed board 210 within the internal space 30a by using a shielding structure 30 to enclose the entire radiotherapy bed 20 within the internal space 30a. This would eliminate the need to modify the connection structure between the bed board 210 and other parts of the treatment bed 20. Furthermore, the shielding structure 30 can also shield against radiation that may penetrate the aforementioned other parts of the radiotherapy bed 20, thereby better preventing radiation from the radiation source from leaking to the outside and improving the protective effect.
[0060] It is also conceivable that, in cases where the other parts of the radiotherapy bed 20 include portions that are impermeable to radiation from the radiation source, the shielding structure 30 may not enclose such portions within the internal space 30a, or may only enclose a portion of such portions within the internal space 30a. In this manner, the radiation from the radiation source can still be shielded within the internal space 30a to prevent the radiation from leaking to the outside.
[0061] It is conceivable that the shielding structure 30 or a portion thereof may be arc-shaped, cylindrical, rectangular, spherical, or any other suitable shape.
[0062] In some implementations, refer to Figures 3 to 5 The shielding structure 30 may include a first shielding portion 310 and a second shielding portion 320. The first shielding portion 310 and the second shielding portion 320 are two separate parts that can be connected to each other to define an internal space 30a. At least one of the first shielding portion 310 and the second shielding portion 320 can be moved to open and close the internal space 30a.
[0063] In other words, the first shielding portion 310 and the second shielding portion 320 are two physically or structurally separate parts, and these two parts can be connected to each other to form a complete shielding structure 30, and the internal space 30a can be opened and closed by movement.
[0064] In this way, the internal space 30a can be quickly opened and closed by moving only one of the first shielding part 310 and the second shielding part 320, so as to facilitate the entry and exit of the target object and equipment operators such as doctors. Moreover, in terms of equipment maintenance, it is possible to disassemble, repair or replace only a single shielding part, without having to disassemble, repair or replace the entire shielding structure, thereby reducing maintenance time and cost.
[0065] It is conceivable that the first shielding portion 310 can be configured to move relative to the second shielding portion 320, for example, via a slide rail, a movable link, or the like. In this case, the first shielding portion 310 and the second shielding portion 320 can be structurally independent of each other. However, it is also conceivable that the first shielding portion 310 and the second shielding portion 320 are structurally related; for example, a portion of the slide rail or link can be disposed on the second shielding portion 310.
[0066] It is also conceivable that, for example Figure 3 As shown, the first shielding portion 310 is movable to cover the end region 2100 of the bed board 210 and to expose the end region 2100 to the external environment.
[0067] The end region 2100 covered by the first shielding portion 310 is the region of the bed board 210 including its ends. For example, in Figure 3 In the enclosed state shown, the first shielding portion 310 covers the right end region of the bed board 210 from above, or in other words, the distal region of the bed board 210 relative to the afterloading radiotherapy device 10. Moreover, the first shielding portion 310 is not only movable, but also allows the end region 2100 to be exposed to the external environment through this movement.
[0068] In this configuration, the patient can directly get on and off the bed board 210 of the radiotherapy bed 20 from the exposed end region 2100, and the equipment operator, such as a doctor, can also perform medical procedures directly at the exposed end region 2100, such as placing the applicator and connecting the delivery tube to the applicator, without having to enter the internal space 30a of the shielding structure 30. This improves the convenience of radiotherapy for both the patient and the equipment operator, especially for elderly or immobile patients, making it easier for them to get on and off the bed. Furthermore, since it is not necessary to enter the internal space 30a of the shielding structure 30, the internal space 30a can be designed to be smaller, thereby further reducing the overall space occupied by the equipment.
[0069] In some implementations, refer to Figure 6 The first shielding part 310 can be detachably connected to the second shielding part 320.
[0070] For example, the first shielding part 310 can be connected to the second shielding part 320 by means of snap-fit connection, bolt connection, or other methods. In this way, when the target needs to move the bed board 210 of the radiotherapy bed 20, the first shielding part 310 can be directly removed from the second shielding part 320, and then installed back onto the second shielding part 320 during radiotherapy. This improves the flexibility of equipment operation and facilitates the maintenance of the shielding structure 30.
[0071] It is conceivable that the first shielding portion 310 can be arc-shaped, cylindrical, rectangular, spherical, or any other suitable shape.
[0072] In some implementations, refer to Figure 7 and Figure 8 The afterloading radiotherapy device 1 may also include an imaging system 40, which is disposed in the internal space 30a and is used to image the target object on the bed board 210.
[0073] As mentioned earlier, before radiotherapy, the applicator must be placed inside the target patient's body, and a CT scan of the target area must be performed. Only after a radiotherapy plan is developed based on the scan results is the applicator connected to the afterloading therapy equipment for radiotherapy. However, the CT scanning equipment and the afterloading therapy equipment are usually not in the same room. Therefore, after the CT scan is completed in the CT room, the target patient must be transferred to the room equipped with the afterloading therapy equipment. Because the target patient's position may change significantly during the transfer, and the anatomical structure of the target area may change significantly due to the extended transfer time, the originally developed radiotherapy plan may no longer be suitable for the current state of the target area, thus affecting the radiotherapy effect.
[0074] Furthermore, in the current radiotherapy process, it is impossible to know the actual location of the radiation source entering the target body, which makes it impossible to determine whether the radiation source is located in the position expected in the radiotherapy plan. Therefore, it is impossible to adjust the radiotherapy plan in a timely manner during the radiotherapy process to achieve the desired radiotherapy effect.
[0075] By incorporating an imaging system 40 into the afterloading radiotherapy device 1, the implantation of the applicator, target localization, automatic target delineation, applicator reconstruction, radiotherapy planning and evaluation, and radiotherapy administration can all be completed in the same room, i.e., the radiotherapy room where the afterloading radiotherapy device 1 is deployed. This makes it easier for the target patient to maintain a fixed position, and because the total time from applicator implantation to radiotherapy administration is shortened, the anatomical structure of the target area does not change significantly, thus enabling the developed radiotherapy plan to achieve better radiotherapy results.
[0076] Furthermore, the imaging system 40 enables real-time imaging of the target area during radiotherapy to determine the actual location of the radiation source. This allows for timely and effective adjustments to the radiotherapy plan, such as accurately adjusting the dose distribution of the radiation source, thereby achieving better radiotherapy results for the tumor tissue while minimizing radiation damage to surrounding normal tissues.
[0077] It is conceivable that the imaging system 40 can be one or more of the following: CT imaging system, MRI (Magnetic Resonance Imaging) imaging system, X-ray imaging system, infrared imaging system, body surface optical imaging system, or other imaging systems.
[0078] For example, Figure 7 and Figure 8 The imaging system 40 shown is an X-ray imaging system, which includes an imaging device 410. The imaging device 410 includes a first imaging device 4101 and a second imaging device 4102, namely, an X-ray tube and a detector, respectively, or referred to as an X-ray generator and an X-ray detector. The first imaging device 4101 is used to emit X-rays toward the target object, while the second imaging device 4102 is used to receive the X-rays passing through the target object, thereby imaging the target object.
[0079] It is conceivable that the imaging device 410 can be one, two, or more; that is, the imaging system 40 can include one, two, or more sets of X-ray tubes and detectors. For example, Figure 8 The image system 40 shown includes three sets of X-ray tubes and detectors. When two or more sets of X-ray tubes and detectors are provided, the positions of these sets of X-ray tubes and detectors can be fixed and different to image the target object from different angles, thereby improving the localization accuracy of the target area within the body.
[0080] In some implementations, such as Figure 7 and Figure 8 As shown, the imaging system 40 can be disposed on the inner wall 30b of the shielding structure 30.
[0081] For example, in Figure 7 and Figure 8 In the shielding structure 30, both the first imaging device 4101 and the second imaging device 4102 are mounted on the inner wall 30b of the shielding structure 30.
[0082] In this way, it is possible to avoid setting up additional structures in the internal space 30a to support the imaging system 40, thereby saving space within the shielding structure 30 and allowing the afterloading radiotherapy equipment to be designed more compactly to reduce the space it occupies.
[0083] It is conceivable that, in this case, at least the portion of the shielding structure 30 used for setting the imaging device 410 ( Figure 7 This portion of the shielding structure 30 (shown as dashed lines in the image) can, for example, be cylindrical (e.g., Figure 8 (This section is shown as cylindrical only, indicated by dashed lines.) However, it is also conceivable that this section could be any other suitable shape, which is not limited here.
[0084] In some implementations, such as Figure 9 and Figure 10 As shown, in addition to the imaging device 410 for acquiring an image of the target object, the imaging system 40 may also include a first movable member 420, through which the imaging device 410 can move relative to the target object.
[0085] Imaging device 410 may be, for example, a device that uses CT, MRI, X-ray, infrared, body surface optics, etc. to acquire images of a target object.
[0086] By enabling the imaging device 410 to move relative to the target object, the target object can be imaged more accurately, thereby enabling the development of a more accurate radiotherapy plan based on the acquired images, and thus achieving better radiotherapy results.
[0087] It is conceivable that the imaging device 410 may move relative to the target object, for example, by rotating along a circular path around the target object, or by moving along the length or width of the bed plate 210. Moreover, if the imaging system 40 is an X-ray imaging system, the X-ray tube may move independently, the detector may move independently, or the X-ray tube and the detector may move together.
[0088] It is conceivable that, for example Figure 9 and Figure 10As shown, the first movable member 420 can be disposed on the inner wall 30b of the shielding structure 30 to contact the inner wall 30b.
[0089] In this way, the first movable member 420 can be made more stable, which helps to improve the stability of imaging, and also reduces the space occupied by the first movable member 420 in the internal space 30a.
[0090] However, it is also conceivable that the first movable member 420 may not come into contact with the inner wall 30b of the shielding structure 30.
[0091] In some implementations, such as Figure 9 and Figure 10 As shown, the first movable component 420 may include a ring track 4201 that extends around the bed board 210 of the radiotherapy bed 20, and the imaging device 410 is capable of rotating around the target object along the ring track 4201.
[0092] In this configuration, the imaging device 410 can rotate around the target object along a circular path defined by the circular track 4201, for example, rotating a full revolution or a portion of a full revolution. For example, as... Figure 9 As shown, when the imaging device 410 includes a first imaging device 4101 and a second imaging device 4102, the first imaging device 4101 and the second imaging device 4102 can be positioned opposite each other and can move synchronously along the circular track 4201.
[0093] Therefore, the imaging device 410 can image the target object from multiple angles, or even from various angles, to obtain a more complete and accurate image, thereby enabling the formulation of a more accurate radiotherapy plan and thus achieving better radiotherapy results.
[0094] It is conceivable that, for example Figure 9 and Figure 10 As shown, the annular track 4201 can be disposed at its top on the inner wall 30b of the shielding structure 30, and the bottom of the annular track 4201 can be disposed on the support portion 220 of the radiotherapy bed 20, for example, on the base 2201 of the support portion 220, which will be mentioned below. However, it is also conceivable that the annular track 4201 can be disposed on the inner wall 30b at any other location.
[0095] Another possibility is to refer to Figure 11The entire outer periphery of the annular track 4201 can be disposed on the inner wall 30b (it should be noted that, for easy distinction, the inner wall 30b and the outer periphery of the annular track 4201 are shown as slightly separated; however, it is understood that the outer periphery of the annular track 4201 is actually in contact with the inner wall 30b), that is, the annular track 4201 can be disposed along the inner wall 30b of the shielding structure 30, or, in other words, the annular track 4201 can be a ring extending along the inner wall 30b of the shielding structure 30.
[0096] Understandably, in this case, at least a portion of the shielding structure 30 used for setting the annular track 4201 ( Figure 9 This portion of the shielding structure 30 (shown as dashed lines in the image) can, for example, be cylindrical (e.g., Figure 11 (This section is shown as cylindrical only), so that the entire outer periphery of the annular track 4201 is set to the inner wall 30b. In this way, the annular track 4201 can be made stable throughout the entire circumference, which helps to improve the stability of imaging; moreover, it can save more space within the shielding structure 30 and allow for a more compact design of afterloading radiotherapy equipment to reduce its space occupation.
[0097] In some implementations, such as Figure 9 As shown, the first movable component 420 may include a linear track 4202 that extends along the length or width of the bed board 210 of the radiotherapy bed 20, and the imaging device 410 is capable of moving along the linear track 4202.
[0098] In this configuration, the imaging device 410 can move along a straight path defined by the linear track 4202 in the length or width direction of the bed plate 210. For example, as Figure 9 As shown, the first imaging device 4101 and the second imaging device 4102 can move synchronously along the straight track 4202.
[0099] Therefore, the imaging device 410 can move along the length or width of the bed board 210 to the most suitable position for imaging the target object, so as to obtain a more accurate image, thereby enabling the formulation of a more accurate radiotherapy plan and thus achieving better radiotherapy results.
[0100] It is conceivable that, for example Figure 9 As shown, the straight track 4202 can be arranged to intersect with the circular track 4201, so that the imaging device 410 can move on either the straight track 4202 or the circular track 4201 as needed.
[0101] However, other arrangements of the linear track 4202 and the circular track 4201 are also conceivable. For example, the circular track 4201 can be arranged on the linear track 4202 and can move along the linear track 4202, thereby driving the imaging device 410 located on the circular track 4201 to move along the linear track 4202 as well. In this way, the movement of the imaging device 410 along the linear track 4202 can also be achieved.
[0102] In some implementations, such as Figure 1 As shown, the support portion 220 may include a base 2201 and a second movable member 2202. The bed board 210 is mounted to the base 2201 via the second movable member 2202 and is movable relative to the base 2201 via the second movable member 2202.
[0103] In this configuration, the bed board 210 can be fixed relative to the second movable member 2202, while the second movable member 2202 can move relative to the base 2201. Thus, the movement of the bed board 210 relative to the base 2201 is achieved by the movement of the second movable member 2202. Alternatively, the second movable member 2202 can be fixed relative to the base 2201, while the bed board 210 can move relative to the second movable member 2202. Thus, the movement of the bed board 210 relative to the base 2201 is achieved by the movement of the bed board 210. Alternatively, the bed board 210 can move relative to the second movable member 2202, and the second movable member 2202 can also move relative to the base 2201. This also achieves the movement of the bed board 210 relative to the base 2201.
[0104] Therefore, by moving the bed board 210, the position of the target object on the bed board 210 relative to the afterloading radiotherapy device 10 and the imaging system 40 can be adjusted, so that the applicator pre-placed in the target object can be connected to the afterloading radiotherapy device 10 in a better position, and the imaging system 40 can image the target object in a better position, thereby improving the radiotherapy effect.
[0105] It is conceivable that the bed board 210 can perform three-dimensional movement, that is, in three mutually perpendicular directions (e.g., Figure 1 The bed board 210 shown can be translated, rotated, or tilted in the left-right, front-back, and up-down directions. This facilitates more accurate and convenient imaging and radiotherapy of the target object.
[0106] In some implementations, refer to Figure 12 and Figure 13 The afterloading radiotherapy device 10 can be positioned above the bed board 210, or on one side of the bed board 210 in its width direction. It should be noted that, for clarity, Figure 12 and Figure 13 The first active component 420 is indicated only by the dashed line area.
[0107] In this way, the afterloading radiotherapy device 10 can be positioned as close as possible to the target, thereby allowing for a reduction in the length of the delivery tube 110. This improves the positioning accuracy of the radiation source within the delivery tube 110, enhancing radiotherapy efficacy, and shortens the time it takes for the radiation source to move between the afterloading radiotherapy device 10 and the target, thus accelerating the radiotherapy process and reducing the risk of radiation leakage.
[0108] It is conceivable that, with the afterloading radiotherapy device 10 positioned above the bed board 210 or on one side of the bed board 210 in its width direction, the afterloading radiotherapy device 10 can also move relative to the bed board 210.
[0109] For example, such as Figure 12 and Figure 13 As shown, the afterloading radiotherapy device 10 can be mounted to the third movable member 140 and can be moved relative to the bed board 210 via the third movable member 140. For example, the afterloading radiotherapy device 10 can be moved along the length or width of the bed board 210, or it can be moved vertically, or it can be moved in any other desired manner.
[0110] In this way, the distance between the afterloading radiotherapy device 10 and the target object can be further adjusted according to the location of the target object, so as to further reduce the length of the delivery tube 110. As a result, the positioning accuracy of the radiation source in the delivery tube 110 can be further improved, thereby further improving the radiotherapy effect, and the time it takes for the radiation source to move between the afterloading radiotherapy device 10 and the target object can be further shortened, thereby further accelerating the radiotherapy process and reducing the risk of radiation leakage.
[0111] It is conceivable that, for example Figure 12 and Figure 13 As shown, the afterloading radiotherapy device 10 can be disposed on the inner wall 30b of the shielding structure 30. For example, the third movable member 140 can be fixed on the inner wall 30b of the shielding structure 30, thereby the afterloading radiotherapy device 10 is disposed on the inner wall 30b via the third movable member 140.
[0112] In this way, it is possible to avoid setting up additional structures in the internal space 30a to support the afterloading radiotherapy device 10, thereby saving space within the shielding structure 30 and allowing the afterloading radiotherapy device to be designed more compactly to reduce the space it occupies.
[0113] It is conceivable that the first movable member 420 may be located below the third movable member 140, so that the imaging device 410 disposed on the first movable member 420 is located below the afterloading radiotherapy device 10 disposed on the third movable member 140. However, other positional relationships between the imaging device 410 and the afterloading radiotherapy device 10 are also conceivable, as long as they do not affect the operation of the imaging device 410 and the afterloading radiotherapy device 10.
[0114] In this disclosure, the terms "first," "second," "before," "after," etc., are used merely for descriptive purposes and should not be considered restrictive. Furthermore, although this disclosure has been described with reference to exemplary embodiments, it should be understood that this disclosure is not limited to the specific embodiments described and shown herein. Various changes to the exemplary embodiments can be made by those skilled in the art without departing from the scope defined by the claims of this disclosure.
[0115] The features mentioned and / or shown in the foregoing description of exemplary embodiments of this disclosure may be combined in the same or similar manner with one or more other embodiments, combined with features in other embodiments, or substituted for corresponding features in other embodiments. Such combinations or substitutions should also be considered as including within the scope of protection of this disclosure.
Claims
1. An afterloading radiotherapy device, characterized in that, include: Afterloading therapy devices are used to deliver a stored source of radiation into the body of a target individual. A radiotherapy bed, including a bed board for supporting the target object; as well as A shielding structure is used to enclose the afterloading radiotherapy device and the bed board within its internal space to prevent radiation from the radiation source from leaking to the outside.
2. The afterloading radiotherapy device according to claim 1, characterized in that, The shielding structure is configured to enclose the entire afterloading radiotherapy device and the radiotherapy bed in the internal space.
3. The afterloading radiotherapy device according to claim 1, characterized in that, The shielding structure includes a first shielding portion and a second shielding portion, which are two separate parts that can be connected to each other to define the internal space. At least one of the first shielding portion and the second shielding portion is movable to open and close the internal space.
4. The afterloading radiotherapy device according to claim 3, characterized in that, The first shielding portion is movable and is used to cover the end area of the bed board and expose the end area to the external environment.
5. The afterloading radiotherapy device according to claim 1, characterized in that, It also includes an imaging system disposed in the interior space and used to image the target object on the bed board.
6. The afterloading radiotherapy device according to claim 5, characterized in that, The imaging system is mounted on the inner wall of the shielding structure.
7. The afterloading radiotherapy device according to claim 5, characterized in that, The imaging system includes an imaging device and a first movable component. The imaging device is used to acquire an image of the target object, and the imaging device is movable relative to the target object via the first movable component.
8. The afterloading radiotherapy device according to claim 7, characterized in that, The first movable component includes a ring track extending around the bed board, and the imaging device is rotatable along the ring track around the target object; and / or, The first movable component includes a linear track that extends along the length or width of the bed board, and the imaging device is capable of moving along the linear track.
9. The afterloading radiotherapy device according to claim 1, characterized in that, The afterloading radiotherapy device is positioned above the bed board or on one side of the bed board in its width direction.
10. The afterloading radiotherapy device according to claim 1 or 9, characterized in that, The afterloading radiotherapy device is mounted on the inner wall of the shielding structure.