Radiotherapy equipment and cylindrical applicator thereof

Abstract

The present invention belongs to the technical field of radiotherapy equipment, and in particular relates to a radiotherapy device and a cylindrical applicator thereof. The radiotherapy device includes a treatment head for emitting therapeutic radiation, and the cylindrical applicator includes a cylinder and a shielding shell, wherein an irradiation channel for the passage of therapeutic radiation is provided through the cylinder, the plane where the top of the cylinder is located is a horizontal plane, and the angle between the plane where the bottom of the cylinder is located and the horizontal plane ranges from 0° to 45°. During radiotherapy, the treatment head is used to emit therapeutic radiation to irradiate the area where the tumor tissue of the human body is located, and a cylindrical applicator is added between the treatment head and the human body to form an irradiation field that matches the size of the area where the tumor tissue is located, thereby reducing damage to normal tissue surrounding the area where the tumor tissue is located. In fact, the plane where the tumor tissue area is located may be an inclined plane, and the cylinder with an inclined lower end surface can better fit the human body, thereby reducing damage to surrounding normal tissue.

Description

Technical Field

[0001] The present invention belongs to the technical field of radiotherapy equipment, and in particular relates to radiotherapy equipment and a cylindrical applicator thereof. Background Art

[0002] The goal of radiotherapy is to deliver an adequate radiation dose to the target tumor area while minimizing the dose to surrounding normal tissues and organs, thereby improving local tumor control and the patient's quality of life. When using radiotherapy equipment to treat a patient's tumor tissue, the device's treatment head emits therapeutic radiation toward the area where the tumor is located. The device's cylindrical applicator forms an irradiation field that matches the size of the tumor area, minimizing damage to surrounding normal tissue. During this process, the lower end of the cylindrical applicator adheres to the tumor area.

[0003] The prior art provides a cylindrical applicator with both the upper and lower ends being horizontal. Regarding the above-mentioned related technologies, when the area where the tumor tissue is located is an inclined surface, the light-limiting cylinder in the prior art cannot fit well with the area where the tumor tissue is located, thereby causing damage to the surrounding normal tissue. Summary of the Invention

[0004] The main purpose of the present invention is to provide a radiotherapy device and a cylindrical applicator thereof to solve the technical problem in the prior art that the lower end surface of the light-limiting cylinder is not suitable for the area where the tumor tissue of the human body is located and is an inclined surface.

[0005] In an embodiment of the present invention, the radiotherapy device includes a treatment head for emitting therapeutic radiation, and the cylindrical applicator includes:

[0006] a cylindrical body, wherein an irradiation channel for the passage of the therapeutic radiation is formed therein, wherein the diameter of the irradiation channel ranges from 3 cm to 10 cm, wherein the plane on which the top end of the cylindrical body is located is a horizontal plane, and the angle between the plane on which the bottom end of the cylindrical body is located and the horizontal plane ranges from 0° to 45°; and

[0007] The shielding shell is sleeved on the outer peripheral wall of the cylinder, and the shielding shell is used to shield the therapeutic rays and stray radiation.

[0008] In an embodiment of the present invention, the cylindrical applicator further comprises:

[0009] A top cover, wherein the center of the top cover is provided with an entrance hole having the same diameter as the irradiation channel, the top cover is sleeved on the outer peripheral wall of the cylinder, and the outer diameter of the top cover is larger than the outer diameter of the shielding shell; and

[0010] The visual guide is a circular plate-shaped structure. A through hole for the cylinder to pass through is opened at the center of the visual guide, and the bottom of the top cover abuts against the visual guide.

[0011] In an embodiment of the present invention, an annular groove is formed on the outer peripheral wall of the cylinder near the top end, and the bottom of the top cover abuts against the bottom wall of the annular groove.

[0012] In an embodiment of the present invention, the side wall of the annular groove is threadedly engaged with the inner peripheral wall of the top cover.

[0013] In an embodiment of the present invention, the thickness of the visual guide plate is greater than that of the top cover, a first groove is provided on the visual guide plate, and the bottom of the top cover is engaged with the first groove.

[0014] In an embodiment of the present invention, an annular protrusion is formed on the outer peripheral wall of the cylinder, the bottom of the shielding shell abuts against the top of the annular protrusion, and the top abuts against the bottom of the top cover.

[0015] In an embodiment of the present invention, a locking member is provided radially through the visual guide, and the locking member is used to press against the outer peripheral wall of the top cover radially.

[0016] In an embodiment of the present invention, an annular limiting groove is formed on the outer peripheral wall of the top cover, and the annular limiting groove is plug-fitted with the locking member.

[0017] In an embodiment of the present invention, there are multiple locking members, and the multiple locking members are evenly spaced along the circumference of the vision guide.

[0018] In an embodiment of the present invention, a radiotherapy device is further provided, comprising the cylindrical applicator of the radiotherapy device as described above.

[0019] Through the above technical solution, the radiotherapy device and cylindrical applicator provided by the embodiment of the present invention have the following beneficial effects:

[0020] During radiotherapy, a treatment head emits therapeutic radiation to irradiate the area of ​​the human body where the tumor tissue is located. However, to minimize damage to surrounding normal tissue, a cylindrical applicator is placed between the treatment head and the body to create an irradiation field that matches the size of the tumor area. The therapeutic radiation enters from the upper end of the cylindrical applicator, while the lower end of the cylindrical applicator directly contacts the body. In practice, the plane where the tumor tissue area lies may be inclined. The lower end surface of the cylindrical applicator provided in this application can be selected based on the degree of inclination of the plane where the tumor tissue area lies. This inclined lower end surface allows the cylindrical applicator to better conform to the body, thereby minimizing damage to surrounding normal tissue.

[0021] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide an understanding of the present invention and constitute a part of the specification. Together with the following detailed description, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 is a schematic structural diagram of a cylindrical applicator according to one embodiment of the present invention;

[0024] Figure 2 is a schematic cross-sectional view of a cylindrical applicator according to one embodiment of the present invention;

[0025] Figure 3 2 is a schematic structural diagram of a visual guide according to an embodiment of the present invention.

[0026] Description of Reference Numerals

[0027] Label name Label name 100 Cylindrical applicator 5 First groove 1 Cylinder 6 Ring-shaped protrusion 2 Shielded housing 7 Locking parts 3 Top cover 8 Annular limiting groove 4 Visual guide DETAILED DESCRIPTION

[0028] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention and are not intended to limit the present invention.

[0029] The radiotherapy apparatus and the cylindrical applicator 100 thereof according to the present invention will be described below with reference to the accompanying drawings.

[0030] like Figure 1 and Figure 2 As shown, in an embodiment of the present invention, the radiotherapy equipment includes a treatment head, which is used to emit therapeutic rays. The cylindrical applicator 100 includes a cylinder 1 and a shielding shell 2, wherein an irradiation channel for the passage of therapeutic rays is opened through the cylinder 1, and the diameter of the irradiation channel ranges from 3 cm to 10 cm. The plane where the top of the cylinder 1 is located is a horizontal plane, and the angle between the plane where the bottom of the cylinder 1 is located and the horizontal plane ranges from 0° to 45°; the shielding shell 2 is mounted on the outer wall of the cylinder 1, and the shielding shell 2 is used to shield the therapeutic rays and stray radiation.

[0031] During radiotherapy, a treatment head is used to emit therapeutic radiation to irradiate the area of ​​the human body where the tumor tissue is located, and a cylindrical applicator 100 is added between the treatment head and the human body to form an irradiation field that matches the size of the area where the tumor tissue is located, thereby reducing damage to the surrounding normal tissue in the area where the tumor tissue is located. The radiotherapy equipment also includes a bracket, and the cylindrical applicator 100 is adjusted and fixed by the bracket to align the irradiation channel of the cylinder 1 with the treatment head, so that the therapeutic radiation enters from the upper end of the cylinder 1. The lower end of the cylinder 1 is in direct contact with the human body. In fact, the plane where the tumor tissue area is located may be an inclined surface. Therefore, the corresponding cylinder 1 is selected according to the degree of inclination of the inclined surface. The cylinder 1 with an inclined lower end surface can better fit the human body, thereby reducing damage to the surrounding normal tissue.

[0032] In addition, an irradiation channel of corresponding diameter is selected according to the size of the tumor tissue area, so that the irradiation field formed by the cylinder 1 matches the size of the tumor tissue area, thereby reducing damage to surrounding normal tissues.

[0033] like Figure 3 As shown, in an embodiment of the present invention, the cylindrical applicator 100 further includes a top cover 3 and a visual guide 4. An entrance hole with the same diameter as the irradiation channel is provided through the center of the top cover 3. The top cover 3 is sleeved on the outer peripheral wall of the cylinder 1. The outer diameter of the top cover 3 is larger than the outer diameter of the shielding shell 2. The visual guide 4 is a circular plate-like structure. A through hole is provided at the center of the visual guide 4 for the cylinder 1 to pass through. The bottom of the top cover 3 abuts against the visual guide 4.

[0034] Specifically, the visual guide 4 is connected to the bracket, and the visual guide 4 is adjusted to a preset position and fixed by the bracket, and then the barrel 1 is plugged into the through hole, and the top cover 3 acts as a limiter. Since different barrels 1 have different outer diameters, the inner diameter of the through hole of the visual guide 4 needs to be selected according to the outer diameter of the barrel 1, so that the barrel 1 remains stable, thereby avoiding affecting the treatment effect. The outer peripheral wall of the barrel 1 is formed with an annular protrusion 6, and the bottom of the shielding shell 2 abuts against the top of the annular protrusion 6, and the top abuts against the bottom of the top cover 3. The shielding shell 2 is fixed to the outer peripheral wall of the barrel 1 through the annular protrusion 6 and the top cover 3.

[0035] Furthermore, the visual guide plate 4 is thicker than the top cover 3 and is provided with a first groove 5, with the bottom of the top cover 3 engaging with the first groove 5. After the top cover 3 is engaged with the first groove 5, the top of the top cover 3 is located at a level no higher than the top of the visual guide plate 4. The first groove 5 further limits the top cover 3, preventing the cylinder 1 from fluctuating in the vertical plane, thereby making the cylinder 1 more stable.

[0036] In the embodiment of the present invention, an annular groove is formed on the outer peripheral wall of the cylinder body 1 near the top end, and the bottom of the top cover 3 abuts against the bottom wall of the annular groove.

[0037] Specifically, the bottom wall of the annular groove is used to limit the vertical position of the top cover 3. The side walls of the annular groove are threadedly engaged with the inner circumferential wall of the top cover 3. The threaded engagement between the side walls of the annular groove and the inner circumferential wall of the top cover 3 strengthens the connection between the cylinder 1 and the top cover 3, thereby making the cylinder 1 more stable.

[0038] Furthermore, the outer peripheral wall of the top cover 3 can be in a circular shape, etc., and the shape of the first groove 5 can correspond to the outer peripheral wall of the top cover 3. Generally, a circular shape is the best.

[0039] In an embodiment of the present invention, a locking member 7 is provided radially through the vision guide 4 , and the locking member 7 is used to press against the outer peripheral wall of the top cover 3 radially.

[0040] Specifically, the locking member 7 penetrates the outer peripheral wall of the visual guide 4, exits the sidewall of the first groove 5, and abuts the outer peripheral wall of the top cover 3, thereby preventing the top cover 3 from fluctuating in the horizontal plane and further stabilizing the cylinder body 1. There are multiple locking members 7, which are evenly spaced along the circumference of the visual guide 4 and are threadedly engaged with the top cover 3.

[0041] Furthermore, an annular limiting groove 8 is formed on the outer peripheral wall of the top cover 3 , and the annular limiting groove 8 is plugged into and fitted with the locking member 7 , and one end of the locking member 7 facing the annular limiting groove 8 abuts against the bottom wall of the annular limiting groove 8 .

[0042] In an embodiment of the present invention, a radiotherapy device is further provided, comprising the cylindrical applicator 100 of the radiotherapy device. Since the radiotherapy device adopts all embodiments of the cylindrical applicator 100 of the radiotherapy device, the radiotherapy device has all the beneficial effects achieved above.

[0043] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0044] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0045] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0046] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A cylindrical applicator of a radiotherapy device, the radiotherapy device comprising a treatment head for emitting therapeutic radiation, characterized in that: The cylindrical applicator (100) comprises: The cylinder (1) has an irradiation channel for the treatment radiation to pass through it, the diameter of the irradiation channel ranges from 3 cm to 10 cm, the plane where the top end of the cylinder (1) is located is a horizontal plane, and the angle between the plane where the bottom end of the cylinder (1) is located and the horizontal plane ranges from 0° to 45°; and A shielding shell (2) is sleeved on the outer peripheral wall of the cylinder (1), and the shielding shell (2) is used to shield the therapeutic rays and stray radiation; A top cover (3), wherein the center of the top cover (3) is provided with an entrance hole having the same diameter as the irradiation channel, the top cover (3) is sleeved on the outer peripheral wall of the cylinder (1), and the outer diameter of the top cover (3) is greater than the outer diameter of the shielding shell (2); The visual guide plate (4) is a circular plate-shaped structure, the center of the visual guide plate (4) is provided with a through hole for the cylinder (1) to pass through, and the bottom of the top cover (3) abuts against the visual guide plate (4); An annular protrusion (6) is formed on the outer peripheral wall of the cylinder (1), the bottom of the shielding shell (2) abuts against the top of the annular protrusion (6), and the top abuts against the bottom of the top cover (3); The visual guide plate (4) is provided with a locking member (7) extending radially therethrough, and the locking member (7) is used to press against the outer peripheral wall of the top cover (3) in the radial direction; An annular limiting groove (8) is provided on the outer peripheral wall of the top cover (3), and the annular limiting groove (8) is plug-fitted with the locking member (7).

2. The cylindrical applicator of the radiotherapy device according to claim 1, characterized in that An annular groove is formed on the outer peripheral wall of the cylinder (1) near the top end, and the bottom of the top cover (3) abuts against the bottom wall of the annular groove.

3. The cylindrical applicator of the radiotherapy device according to claim 2, characterized in that The side wall of the annular groove is threadably engaged with the inner peripheral wall of the top cover (3).

4. The cylindrical applicator of the radiotherapy device according to claim 1, characterized in that The visual guide plate (4) is thicker than the top cover (3), a first groove (5) is provided on the visual guide plate (4), and the bottom of the top cover (3) is engaged with the first groove (5).

5. The cylindrical applicator of the radiotherapy device according to claim 1, characterized in that There are multiple locking members (7), and the multiple locking members (7) are evenly spaced along the circumference of the visual guide plate (4).

6. A radiotherapy device, characterized in that: A cylindrical applicator (100) comprising the radiotherapy device according to any one of claims 1 to 5.

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