阅读说明：本技术 一种立体定向头部放疗设备 (Stereotactic head radiotherapy equipment ) 是由 宁武平 于 2019-12-18 设计创作，主要内容包括：本发明涉一种立体定向头部放疗设备,包括旋转滚筒、旋转盘、治疗头和放射源,所述旋转盘倾斜的转动设置在所述旋转滚筒上,所述治疗头转动设置在所述旋转盘中,所述放射源安装在所述治疗头中。旋转盘与旋转滚筒形成一定夹角,提高空间利用率。倾斜设置的方式有效的缩短了放射源射线出口到聚焦点的距离,间接的延长了放射源的使用期限,或者减少放射源的使用剂量,节约了成本。同时本发明同时具有两个自由度的旋转聚焦,可实现避开敏感神经,降低计量照射的副作用。(The invention relates to a stereotactic head radiotherapy device which comprises a rotary drum, a rotary disc, a treatment head and a radioactive source, wherein the rotary disc is obliquely and rotatably arranged on the rotary drum, the treatment head is rotatably arranged in the rotary disc, and the radioactive source is arranged in the treatment head. The rotating disc and the rotating drum form a certain included angle, and the space utilization rate is improved. The inclined arrangement effectively shortens the distance from the ray outlet of the radioactive source to the focus point, indirectly prolongs the service life of the radioactive source, or reduces the dosage of the radioactive source, and saves the cost. Meanwhile, the invention has rotary focusing with two degrees of freedom, can avoid sensitive nerves and reduce the side effect of metering irradiation.)

1. A stereotactic head radiotherapy equipment is characterized in that: the rotary drum type treatment device comprises a rotary drum, a rotary disc, a treatment head and a radioactive source, wherein the rotary disc is obliquely arranged on the rotary drum in a rotating mode, the treatment head is rotatably arranged in the rotary disc, and the radioactive source is arranged in the treatment head.

2. The stereotactic head radiotherapy apparatus of claim 1, wherein said rotating disk is tilted to form an angle of α with the central axis of said rotating drum, wherein 15 ° - α ° -85 °.

3. Stereotactic head radiotherapy apparatus according to claim 2, characterized in that: the inclined rotating disc and the central axis of the rotating drum form an angle of 24 degrees, 36 degrees or 45 degrees.

4. Stereotactic head radiotherapy apparatus according to claim 1, characterized in that: and a turntable mounting opening is obliquely formed in the outer peripheral surface of the rotary drum.

5. Stereotactic head radiotherapy apparatus according to claim 4, characterized in that: the circumference of the mounting opening of the rotary table is provided with a circle of trapezoidal steps.

6. Stereotactic head radiotherapy apparatus according to claim 5, characterized in that: and a disc type bearing is arranged on the trapezoidal step.

7. Stereotactic head radiotherapy apparatus according to claim 6, characterized in that: the rotating disc is fixedly arranged on the bearing.

8. Stereotactic head radiotherapy apparatus according to any of claims 1 to 7, characterized in that: the rotary drum is hollow, an opening is formed in the end face of one end of the rotary drum, the diameter of the rotary drum is gradually reduced from the opening end to the other end, and the rotary drum is contracted and folded at the other end of the drum body.

9. Stereotactic head radiotherapy apparatus according to claim 8, characterized in that: the other end of the rotary drum is provided with a rotating shaft.

10. Stereotactic head radiotherapy apparatus according to claim 9, characterized in that: the rotary drum is rotatably arranged on the base.

Technical Field

The invention belongs to the technical field of medical radiation, and particularly relates to a three-dimensional directional head radiotherapy device.

Background

Before the gamma knife treatment device is used, the specific position of the head tumor of the patient relative to the wound positioning device needs to be determined through other examination imaging equipment, so that the head of the patient is fixed according to the specific position of the head tumor of the patient on the wound positioning device. The gamma knife treatment is divided into head gamma knife treatment and body gamma knife treatment. The gamma knife therapy for head is carried out by installing multiple cobalt sources in a spherical helmet, focusing the cobalt sources at a certain point in the cranium, and forming a narrow-beam gamma ray with sharp edge. When in treatment, narrow beams of rays are converged on the focus to form a limited high-dose area to destroy the focus, and the method is mainly used for treating intracranial small tumors and functional diseases. The body part gamma knife therapy is mainly used for treating various tumors of the whole body.

The current clinical head gamma knife is divided into two types: the fixed and nonrotatable equipment of radiation source and radiation source single rotation focus, the rotation focus equipment has the characteristics of good protection normal tissue, and the side reaction of treatment is light, and it exists following not enoughly:

the radioactive rays emitted from the treatment head in the existing gamma knife are vertical to the central axis of the roller, and the vertical radioactive ray irradiation mode requires a certain space distance between the treatment head and a patient directly, so that the space volume of gamma knife equipment is increased;

secondly, the distance from the radioactive source ray outlet to the focus point is the source focal length, the longer the source focal length is, the more radioactive source metering is needed, and the cost for purchasing radioactive sources is increased invisibly.

Thirdly, the existing therapeutic equipment has insufficient free rotation degree, and the space utilization rate cannot be effectively improved.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a stereotactic head radiotherapy device which has a simple structure, is convenient to operate and has two degrees of freedom for rotary focusing.

In order to achieve the purpose, the invention adopts the following technical scheme: the stereotactic head radiotherapy equipment comprises a rotary drum, a rotary disk, a treatment head and a radioactive source, wherein the rotary disk is obliquely arranged on the rotary drum in a rotating mode, the treatment head is rotatably arranged in the rotary disk, and the radioactive source is installed in the treatment head.

Furthermore, an included angle of α is formed between the rotating disc which is arranged in an inclined manner and the central axis of the rotating drum, wherein the included angle is more than or equal to 15 degrees and less than or equal to α degrees and less than or equal to 85 degrees.

Further, the inclined rotating disc forms an angle of 24 degrees, 36 degrees or 45 degrees with the central axis of the rotating drum.

Furthermore, a turntable mounting opening is obliquely formed in the outer peripheral surface of the rotary drum.

Furthermore, a circle of trapezoidal steps are arranged on the circumferential surface of the mounting opening of the rotary table

Furthermore, a disc type bearing is arranged on the trapezoidal step.

Further, the rotating disc is fixedly arranged on the bearing.

Furthermore, the interior of the rotary roller is hollow, an opening is formed in the end face of one end of the rotary roller, the diameter of the rotary roller is gradually reduced from the opening end to the other end, and the rotary roller is contracted and folded at the other end of the roller body.

Furthermore, the other end of the rotary drum is provided with a rotating shaft.

Further, still include the base, rotatory cylinder rotates and sets up on the base.

According to the technical scheme, the rotary plate is obliquely and rotatably arranged on the rotary drum, the treatment head is rotatably arranged in the rotary plate, and the radioactive source is arranged in the treatment head.

Compared with the existing vertical radioactive ray irradiation mode, the rotary drum structure provided by the invention has the advantages that the treatment head is arranged in the rotary disc mounting port, and the rotary disc mounting port is obliquely arranged on the rotary drum.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a stereotactic head radiotherapy apparatus of the present invention;

figure 2 is a cross-sectional view of a stereotactic head radiotherapy apparatus of the present invention;

figure 3 is a second cross-sectional view of the stereotactic head radiotherapy apparatus of the present invention;

figure 4 is an exploded view of the stereotactic head radiotherapy device of the present invention.

In the figure, an angle is formed between the central axis of the rotary drum and the central axis of the rotary drum by 1, 2, 3, 4, a radioactive source, 5, an oblique opening surface, 6, a rotary table mounting opening, 7, a trapezoidal step, 8, a bearing, 9, an opening, 10, a rotating shaft, 11, a base α and the obliquely arranged rotary table.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the invention, as detailed in the appended claims.

As shown in fig. 1 and 2, the present embodiment provides a stereotactic head radiotherapy device, which comprises a rotary drum 1, a rotary disc 2, a treatment head 3 and a radioactive source 4, wherein the rotary disc 2 is obliquely and rotatably arranged on the rotary drum 1, the treatment head 3 is rotatably arranged in the rotary disc 2, and the radioactive source 4 is installed in the treatment head 3.

In the embodiment, the inclined rotating disk 2 forms an included angle of α with the central axis of the rotating drum 1, wherein the included angle is equal to or larger than 15 degrees and equal to or smaller than α degrees and equal to or smaller than 85 degrees, preferably, the included angle formed by the inclined rotating disk 2 and the central axis of the rotating drum 1 is 24 degrees, 36 degrees or 45 degrees.

As shown in fig. 2 and fig. 3, in the stereotactic head radiotherapy apparatus provided in this embodiment, as a preferred embodiment, an inclined bevel surface 5 is formed on an outer periphery of the rotary drum, the turntable mounting opening 6 is obliquely formed on the bevel surface 5, and a circle of trapezoidal steps 7 is formed on a circumferential surface of the turntable mounting opening 6; and a disc type bearing 8 is arranged on the trapezoidal step 7. The rotating disc 2 is fixedly arranged on the bearing 8.

The invention provides a stereotactic head radiotherapy device, wherein a radioactive source 4 is arranged in a treatment head 3, and can realize the switching of a source and the collimation and focusing of the radioactive source 4, a rotating disk 2 and a rotating drum 1 have a certain included angle α, the source focal length of the radioactive source 4 can be reduced through an included angle α, and the available space of the device is improved.

As shown in fig. 4, as a preferred embodiment, in the stereotactic head radiotherapy apparatus provided in this embodiment, the inside of the rotary drum 1 is hollow, an opening 9 is opened on an end surface of one end of the rotary drum 1, and the diameter of the rotary drum 1 gradually decreases from the end of the opening 9 to the other end, and is contracted and folded at the other end of the drum body. The other end of the rotary drum 1 is provided with a rotating shaft 10. The stereotactic head radiotherapy equipment provided by the embodiment further comprises a base 11, and the rotary drum 1 is rotatably arranged on the base 11.

Compared with the existing vertical radioactive ray irradiation mode, the treatment head 3 is arranged in the rotary drum 1 in the drum structure provided by the invention, the treatment head 3 is arranged in the rotary drum 1 in an inclined mode, and the rotary disc 2 and the rotary drum 1 form a certain included angle of 15 degrees to 85 degrees, wherein the included angle is more than or equal to α degrees, and the included angle is formed between the rotary disc 2 and the rotary drum 1, so that the space utilization rate is improved.

Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.