Beam limiting cylinder and radiotherapy equipment

Abstract

The utility model provides a beam limiting cylinder and radiotherapy equipment, and the beam limiting cylinder comprises a first cylinder body and a second cylinder body, and the second cylinder body is detachably connected with the first cylinder body; the beam channel is formed in the first cylinder and the second cylinder, the beam channel is used for allowing beams to pass through, the beam channel comprises a beam outlet, the beam outlet is formed in the end, away from the first cylinder, of the second cylinder, and the beams in the beam channel are emitted out of the beam outlet; and the equivalent structure is detachably and mechanically connected with the second barrel at the beam outlet. According to the beam limiting cylinder and the radiotherapy equipment, the technical problem that in the prior art, an equivalent tissue object is bonded to the beam outlet of the beam limiting cylinder through a medical adhesive tape and is prone to falling off due to environmental factors such as temperature and humidity is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of radiotherapy equipment, in particular to a beam limiting tube and radiotherapy equipment. Background Art

[0002] During radiotherapy, a beam penetrates the patient's body surface and irradiates the affected area (called the target volume). The field of view is the area on the patient's body that the doctor wishes the beam to reach. During treatment, the shape of the field should closely match the shape of the target volume (this is called a conformal field). Otherwise, there is a risk of damage to organs near the target volume (called organs at risk), or even endangering the patient's life. The beam limiter is the primary component that limits the width of the electron beam allowed to pass, forming the field of view on the patient's body surface. A tissue equivalent is often mounted at the end of the beam limiter. In radiotherapy, when electron beams are used to irradiate the human body, the maximum dose is not at the surface, but rather at a certain depth within the body. This region, from the body surface to the maximum dose point, is called the dose build-up zone. Within this zone, the dose increases with depth, forming a dose gradient. Tissue equivalents are used in radiotherapy to compensate for the effects of the dose build-up zone, adjust the dose distribution, and ensure that the treatment area receives the appropriate dose.

[0003] The existing equivalent tissue material is directly interference-connected to the inner wall of the beam limiting tube and adhered to the beam outlet of the beam limiting tube by medical tape. Due to the influence of factors such as the equivalent tissue material's own gravity and the movement of the beam limiting tube, the outer surface of the equivalent tissue material and the inner surface of the beam limiting tube will wear out. At the same time, the medical tape will gradually lose its viscosity due to factors such as temperature, dust, and air humidity, thereby causing the equivalent tissue material to fall off. During the operation, the falling off of the equivalent tissue material will cause the electron beam that has not been dose-adjusted by the equivalent tissue material to be directly irradiated on the lesion site, thereby making the lesion site unable to obtain the required dose gradient, ultimately causing normal cell damage and continued survival of tumor cells, affecting the treatment effect.

[0004] Therefore, the prior art needs to be further developed. Utility Model Content

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide a beam limiting tube and radiotherapy equipment to solve the technical problem in the related art that equivalent tissue is adhered to the beam outlet of the beam limiting tube by medical tape and is easily fallen off due to environmental factors such as temperature and humidity.

[0006] In order to achieve the above technical objectives, the utility model adopts the following technical solutions: a beam limiting tube is provided, including a first tube and a second tube, the second tube is detachably connected to the first tube; a beam channel, the beam channel is formed inside the first tube and the second tube, the beam channel is used for allowing the beam to pass through, the beam channel includes a beam outlet, the beam outlet is opened at one end of the second tube away from the first tube, and the beam in the beam channel is emitted from the beam outlet; an equivalent tissue, the equivalent tissue is detachably mechanically connected to the second tube at the beam outlet.

[0007] Furthermore, one end of the first cylinder away from the second cylinder is detachably connected to the positioning plate, and an identification piece is provided on the positioning plate, so that the first cylinder can be connected to the radiotherapy equipment through the identification piece. A first card slot is provided on the first cylinder, and a first card protrusion matching the first card slot is provided on the positioning plate. The first card protrusion is engaged in the first card slot to connect the first cylinder and the positioning plate.

[0008] Furthermore, the first cylinder and the second cylinder are threadedly connected.

[0009] Furthermore, the first cylinder is provided with a second locking protrusion, and the second cylinder is provided with a second locking groove matching the second locking protrusion. The second locking protrusion is locked in the second locking groove to connect the first cylinder and the second cylinder.

[0010] Furthermore, a clamping component is provided at one end of the second cylinder away from the first cylinder, and the equivalent tissue is connected to the second cylinder through the clamping action of the clamping component.

[0011] Furthermore, the clamping component is a silicone ring, which is fixed on the inner wall of the second cylinder. A connecting part and an abutting part are provided on the equivalent tissue. The diameter of the connecting part is smaller than the diameter of the abutting part. When the connecting part is embedded in the silicone ring, the abutting part abuts against the end face of the beam outlet.

[0012] Furthermore, the clamping component is an elastic clamping groove, which can be deformed when subjected to force, and a protrusion is provided on the equivalent tissue, which is clamped in the elastic clamping groove.

[0013] Furthermore, the first cylinder is connected to any second cylinder, and the bundle outlets on each second cylinder can be connected to equivalent tissue objects. There is an angle between the plane where each bundle outlet is located and the cylinder wall of each corresponding second cylinder, and each angle is different, so that the first cylinder is connected to the second cylinder that matches the lesion site, so that the equivalent tissue object fits on the lesion site.

[0014] Furthermore, the first cylinder and the second cylinder are both made of tungsten alloy material.

[0015] A radiotherapy device comprises the beam limiting cylinder as described above.

[0016] Beneficial effects:

[0017] 1. The equivalent tissue is set at the beam outlet of the second cylinder in a detachable mechanical connection manner, so that the equivalent tissue can be firmly connected to the second cylinder, avoiding the equivalent tissue from falling off during the operation, thereby avoiding the survival of tumor cells and damage to normal cells caused by direct irradiation of the beam to the lesion site, greatly improving the safety of the operation.

[0018] 2. By replacing the second cylinder with different beam outlet end face angles, the influence of the dose build-up area can be effectively compensated, the dose distribution can be optimized, and the equivalent tissue can be ensured to be parallel to the lesion site, so that the treatment area can obtain the appropriate dose and improve the treatment effect.

[0019] 3. The beam limiting tube of this utility model features a detachable first tube and multiple second tubes, allowing the overall shape of the tube to be adjusted to the different lesion locations of different cancer patients. By replacing different second tubes, the equivalent tissue can be aligned parallel to the lesion, thus avoiding the uneven irradiation dose caused by the inability of traditional fixed-shape beam limiting tubes to adapt to different lesion locations. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic structural diagram of the first cylinder and the second cylinder of the beam limiting cylinder used in the first embodiment of the present utility model;

[0021] Figure 2 This is a schematic structural diagram of the first cylinder and the second cylinder of the beam limiting cylinder used in the second embodiment of the present utility model;

[0022] Figure 3 yes Figure 1 A partial enlarged view of part A;

[0023] Figure 4 This is a schematic structural diagram of a clamping component used in one embodiment of the present utility model;

[0024] Figure 5 It is a schematic structural diagram of multiple second cylinders used in an embodiment of the present utility model.

[0025] The above drawings include the following reference numerals:

[0026] 1. First cylinder; 11. First slot; 12. Second protrusion; 2. Second cylinder; 22. Second slot; 3. Beam channel; 31. Beam outlet; 4. Positioning plate; 41. Identification member; 42. First protrusion; 5. Equivalent tissue; 51. Connecting portion; 52. Abutting portion; 53. Protrusion; 6. Clamping component; 61. Silicone ring; 62. Elastic clamping groove. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of this application.

[0028] The detachable connection mentioned in the present invention refers to a detachable connection using a mechanical structure or parts, including but not limited to threaded connection, snap connection, screw, key connection, pin connection and the like.

[0029] According to an embodiment of the present invention, a beam limiting cylinder is provided. Figures 1 to 5 , including a first cylinder 1 and a second cylinder 2, the second cylinder 2 being detachably connected to the first cylinder 1; a beam channel 3, the beam channel 3 being formed inside the first cylinder 1 and the second cylinder 2, the beam channel 3 being used for allowing the beam to pass through, the beam channel 3 including a beam outlet 31, the beam outlet 31 being opened at an end of the second cylinder 2 away from the first cylinder 1, the beam in the beam channel 3 being emitted from the beam outlet 31; an equivalent tissue 5, the equivalent tissue 5 being detachably mechanically connected to the second cylinder 2 at the beam outlet 31. The beam outlet 31 is provided on the second cylinder 2, the equivalent tissue 5 being connected to the beam outlet 31, and the second cylinder 2 being detachably connected to the first cylinder 1, so as to facilitate timely replacement of the equivalent tissue 5 on the second cylinder 2. The equivalent tissue material 5 is mechanically connected to the second barrel 2 in a removable manner. Compared to the conventional method of bonding using medical tape, this mechanical connection is unaffected by factors such as temperature, dust, and air humidity, thereby reducing the risk of the equivalent tissue material 5 falling off during treatment, thereby improving surgical safety. The beam limiting cylinder of this embodiment solves the technical problems in the related art where the equivalent tissue material is interference-connected to the inner wall of the beam limiting cylinder, causing wear on the outer surface of the equivalent tissue material and the inner surface of the beam limiting cylinder due to factors such as the equivalent tissue material's own gravity and the movement of the beam limiting cylinder, and the medical tape is bonded to the beam outlet of the beam limiting cylinder, making the equivalent tissue material susceptible to falling off due to environmental factors such as temperature and humidity.

[0030] See Figure 1 and Figure 5In this embodiment of the beam limiting tube, the end of the first tube 1 away from the second tube 2 is detachably connected to the positioning plate 4. The positioning plate 4 is provided with an identification member 41, which facilitates the connection of the first tube 1 with the radiotherapy equipment. The first tube 1 is provided with a first slot 11, and the positioning plate 4 is provided with a first latching protrusion 42 that matches the first slot 11. The first latching protrusion 42 engages with the first slot 11 to connect the first tube 1 and the positioning plate 4. The use of the slot-and-latch connection method makes the installation process of the first tube 1 and the positioning plate 4 very simple and quick. Medical staff can complete the installation quickly, improving work efficiency.

[0031] See Figure 1 In the beam limiting cylinder of this embodiment, the first cylinder 1 and the second cylinder 2 are threadedly connected to facilitate timely replacement of the second cylinder 2.

[0032] See Figure 2 In this embodiment of the beam limiting cylinder, the first cylinder 1 is provided with a second latching protrusion 12, and the second cylinder 2 is provided with a second latching groove 22 that matches the second latching protrusion 12. The second latching protrusion 12 is latched into the second latching groove 22 to connect the first cylinder 1 and the second cylinder 2. The design of the latching groove and the latching protrusion makes assembly and disassembly between the first cylinder 1 and the second cylinder 2 simple and efficient.

[0033] See Figure 3 and Figure 4 In this embodiment of the beam limiting tube, a clamping member 6 is provided at the end of the second barrel 2, away from the first barrel 1. This clamping member 6 connects the tissue equivalent 5 to the second barrel 2. Conventional tissue equivalents are directly mounted on the end of the beam limiting tube, where they are squeezed against the inner surface of the tube and adhered to the tube with medical tape. This can easily cause the tissue equivalent to fall off. In this embodiment, however, the clamping member 6 allows for quick connection and securement of the tissue equivalent 5.

[0034] See Figure 3 In the beam-limiting tube of this embodiment, the clamping component 6 is a silicone ring 61, which is fixed to the inner wall of the second cylinder 2. The equivalent tissue object 5 is provided with a connecting portion 51 and an abutting portion 52. The diameter of the connecting portion 51 is smaller than the diameter of the abutting portion 52. When the connecting portion 51 is embedded in the silicone ring 61, the abutting portion 52 abuts against the end face of the beam outlet 31. The elastic clamping effect of the silicone ring 61 can ensure that the connecting portion 51 of the equivalent tissue object 5 is firmly embedded therein and is not easy to fall off. At the same time, the close abutment of the abutting portion 52 with the end face of the beam outlet 31 further enhances the stability of the connection and ensures the stability of the equivalent tissue object 5 during the treatment process.

[0035] See Figure 4In the beam limiting tube of this embodiment, the clamping component 6 is an elastic clamping groove 62, which can be deformed under force. A protrusion 53 is provided on the equivalent tissue object 5, and the protrusion 53 is clamped in the elastic clamping groove 62. When in use, the protrusion 53 at one end of the equivalent tissue object 5 is first clamped into the elastic clamping groove 62, and the equivalent tissue object 5 is squeezed hard so that the elastic clamping groove 62 on the side of the protrusion 53 is deformed under force, and then the other end of the protrusion 53 is clamped into the elastic clamping groove 62. After the external force disappears, the elastic clamping groove 62 is reset to fix the protrusion 53 in the elastic clamping groove 62. The reset force of the elastic clamping groove 62 ensures that the protrusion 53 is firmly fixed in the groove, preventing the equivalent tissue object 5 from loosening or falling off during the treatment process. This stable fixation method improves the continuity and reliability of the treatment.

[0036] See Figure 5 In the beam limiting tube of this embodiment, there are at least two second cylinders 2, and the first cylinder 1 is connected to any second cylinder 2. The beam outlet 31 on each second cylinder 2 can be connected to an equivalent tissue object 5. There is an angle between the plane where each beam outlet 31 is located and the cylinder wall of each corresponding second cylinder 2, and each angle is different, so that the first cylinder 1 is connected to the second cylinder 2 that matches the lesion site, so that the equivalent tissue object 5 fits on the lesion site. With the combination of the first cylinder 1 and any second cylinder 2, the beam limiting tube can be flexibly replaced according to the specific lesion site of different cancer patients. This design breaks the limitation of the fixed shape of the traditional beam limiting tube, ensures that the equivalent tissue object 5 can be parallel to the skin on the surface of the lesion, and connects the equivalent tissue object 5 to the beam outlet 31 of each second cylinder 2, so that the beam limiting tube can adapt to different lesion sites, promote uniform irradiation dose on the surface of the disease, and thus improve the accuracy and adaptability of treatment. The detachable connection between the first barrel 1 and the positioning plate 4, as well as between the first barrel 1 and the second barrel 2, simplifies and swifts the installation and removal of the entire beam limiting barrel, improving work efficiency and enabling rapid adjustments to suit different treatment needs. In this embodiment of the beam limiting barrel, the end face of each beam outlet 31 forms an angle with the wall of each second barrel 2, with the angle ranging from 0° to 60°. Figure 1 The middle part shows the second barrel 2 with different end face angles of the beam outlet 31. The angles between the end face of the beam outlet 31 and the barrel wall are 0°, 15°, 30°, 45°, and 60° from left to right. By replacing different second barrels 2, the adaptability of the beam limiting barrel to different lesion locations can be further improved.

[0037] In this embodiment, the beam limiting tube, first tube body 1 and second tube body 2, are both made of tungsten alloy. Materials such as graphite and organic glass can also be used. The inner diameter of the beam limiting tube in this embodiment is 3-10 cm, and the length and thickness of the beam limiting tube are 300 mm and 5.5 mm, respectively.

[0038] The radiotherapy device of this embodiment includes the beam limiting cylinder described above. During radiotherapy, the beam limiting cylinder is designed to precisely control the shape and direction of the radiation beam, ensuring that the beam accurately irradiates the target area and reduces damage to surrounding normal tissues.

[0039] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0040] Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments, and this embodiment will not be described in detail here.

[0041] The serial numbers of the above embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0042] In the above embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0043] The above is only a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A beam limiting cylinder, characterized in that: include: A first cylinder (1) and a second cylinder (2), wherein the second cylinder (2) is detachably connected to the first cylinder (1); A beam channel (3), the beam channel (3) being formed inside the first cylinder (1) and the second cylinder (2), the beam channel (3) being used for allowing a beam to pass through, the beam channel (3) comprising a beam outlet (31), the beam outlet (31) being opened at an end of the second cylinder (2) away from the first cylinder (1), and the beam in the beam channel (3) being emitted from the beam outlet (31); An equivalent tissue (5), wherein the equivalent tissue (5) is detachably mechanically connected to the second cylinder (2) at the beam outlet (31).

2. The beam limiting cylinder according to claim 1, characterized in that: One end of the first cylinder (1) away from the second cylinder (2) is detachably connected to the positioning plate (4); an identification member (41) is provided on the positioning plate (4); the identification member (41) facilitates the connection of the first cylinder (1) with the radiotherapy equipment; a first clamping groove (11) is provided on the first cylinder (1); a first clamping protrusion (42) matching the first clamping groove (11) is provided on the positioning plate (4); the first clamping protrusion (42) is clamped in the first clamping groove (11) to connect the first cylinder (1) with the positioning plate (4).

3. The beam limiting cylinder according to claim 1, characterized in that: The first cylinder (1) and the second cylinder (2) are threadedly connected.

4. The beam limiting cylinder according to claim 1, characterized in that: The first cylinder (1) is provided with a second latching protrusion (12), and the second cylinder (2) is provided with a second latching groove (22) matching the second latching protrusion (12). The second latching protrusion (12) is latched in the second latching groove (22) to connect the first cylinder (1) and the second cylinder (2).

5. The beam limiting cylinder according to claim 1, characterized in that: A clamping component (6) is provided at one end of the second cylinder (2) away from the first cylinder (1), and the equivalent tissue (5) is connected to the second cylinder (2) through the clamping action of the clamping component (6).

6. The beam limiting cylinder according to claim 5, characterized in that: The clamping component (6) is a silicone ring (61), which is fixed on the inner wall of the second cylinder (2). The equivalent tissue (5) is provided with a connecting portion (51) and an abutting portion (52). The diameter of the connecting portion (51) is smaller than the diameter of the abutting portion (52). When the connecting portion (51) is embedded in the silicone ring (61), the abutting portion (52) abuts against the end face of the beam outlet (31).

7. The beam limiting cylinder according to claim 5, characterized in that: The clamping component (6) is an elastic clamping groove (62), and the elastic clamping groove (62) can be deformed when subjected to force. The equivalent tissue (5) is provided with a protrusion (53), and the protrusion (53) is clamped in the elastic clamping groove (62).

8. The beam limiting cylinder according to claim 1, characterized in that: The first cylinder (1) is connected to any one of the second cylinders (2), and the beam outlet (31) on each of the second cylinders (2) can be connected to the equivalent tissue (5). An angle is formed between the plane where each beam outlet (31) is located and the cylinder wall of each corresponding second cylinder (2), and each angle is different, so that the first cylinder (1) is connected to the second cylinder (2) that matches the lesion site, thereby making the equivalent tissue (5) fit on the lesion site.

9. The beam limiting cylinder according to claim 1, characterized in that: The first cylinder (1) and the second cylinder (2) are both made of tungsten alloy material.

10. A radiotherapy device, characterized in that: The invention comprises the beam limiting cylinder according to any one of claims 1 to 9.

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