CN219208771U - A 3D printing-based stray radiation protection device for radiotherapy field - Google Patents

Abstract

The utility model relates to the field of medical radiation protection, in particular to a 3D printing-based radiation therapy field stray radiation protection device. The anti-diffusion assembly includes a lead plate; the lead plate is provided with a telescopic cavity; the bottom of the telescopic cavity is movable through a first lead rod; the two sides of the first lead rod are sequentially slidably connected with several groups of second lead rods. Lead rod; two sets of second motors are arranged in the lead plate; the output ends of the two sets of second motors extend into the telescopic cavity, and a set of second screw rods are respectively driven and connected; the two sets of second wires The ends of the rods far away from the corresponding group of second motors are respectively threadedly connected with a group of second lead rods far away from the first lead rods. The utility model isolates the diseased part of the patient from the normal part and then performs radiotherapy, which avoids the diffusion of low-dose stray radiation outside the irradiated part to kill the normal tissue and organ cells of the human body during radiotherapy, and improves the safety of the protective device. safety.

Description

A 3D printing-based stray radiation protection device for radiotherapy field

technical field

The utility model belongs to the field of medical radiation protection, in particular to a 3D printing-based radiation therapy field stray radiation protection device.

Background technique

In recent years, with the advancement of high-energy X-ray radiotherapy technology in medical accelerators, the survival rate of tumor patients has been greatly improved, and the quality of life of patients after treatment has also been improved. For example, the 5-year survival rate of early nasopharyngeal carcinoma after radiotherapy can reach 80-90%, and the 5-year survival rate of middle-advanced nasopharyngeal carcinoma can also reach 70-80%. have been effectively controlled.

While using radiation to treat cancer, there are also concerns about radiation-induced cancer, especially for children, young patients, or patients who can survive for a long time after radiation therapy. Carcinogenesis has been paid more and more attention by radiotherapists.

After retrieval, in the prior art, the Chinese patent application number: CN202123258846.X, application date: 2021-12-20, discloses a protection device for tumor radiotherapy patients, including a bottom plate, the top of the bottom plate is connected to a base, and the base The upper end is connected with a lifting seat, the upper end of the lifting seat is connected with a radiotherapy bed, the left and right sides of the front and rear end faces of the radiotherapy bed are connected with fixed plates, and guide rods are connected between the left and right fixed plates. Guards are installed on both sides. Radiation includes alpha, beta and gamma rays produced by radioactive isotopes and x-rays, electron beams, proton beams and other particle beams produced by various x-ray therapy machines or accelerators, etc., which will directly kill. Normal tissue and organ cells are killed and affect normal organ functions. Therefore, it is necessary to place protective devices on the left and right sides of the radiotherapy bed on both sides of the radiotherapy site to protect normal tissues and organs outside the radiotherapy site; the protective devices include transparent lead glass plates , transparent lead glass can absorb radiation.

But this device still has the following defects:

During the use of this device, although the radiation range is limited by the transparent lead plate, so that the radiation can be irradiated to the diseased part of the patient to kill the tumor cells, but the radiation can diffuse, and there are still areas where the radiation is irradiated under the transparent lead plate. Extra low-dose stray radiation will kill the normal tissue and organ cells of the human body, resulting in the lack of safety of the device.

Utility model content

In view of the above problems, the utility model provides a 3D printing-based radiotherapy field stray radiation protection device, including a protective device body; the top of the protective device body is provided with a radiotherapy chamber; on the inner walls of both sides of the radiotherapy chamber There are two sets of first chute symmetrically; two sets of anti-diffusion components are arranged in the radiotherapy chamber; the two ends of each set of anti-diffusion components are slidably connected in the two sets of first chute respectively;

The anti-diffusion assembly includes a lead plate; the lead plate is provided with a telescopic cavity; the bottom of the telescopic cavity is movable through a first lead rod; the two sides of the first lead rod are sequentially slidably connected with several groups of second lead rods. Lead rod; two sets of second motors are arranged in the lead plate; the output ends of the two sets of second motors extend into the telescopic cavity, and a set of second screw rods are respectively driven and connected; the two sets of second wires The ends of the rods far away from the corresponding group of second motors are respectively threaded with a group of second lead rods far away from the first lead rods.

Further, an opening is provided on the inner wall of one side of the radiotherapy chamber; a ventilation filter is provided at the opening; a headrest is provided at the bottom of the radiotherapy chamber near the ventilation filter.

Further, a door is hinged at the edge of the top side of the protective device body; an electric slide rail is provided on the side wall of the door close to the radiotherapy chamber; the output end of the electric slide rail is connected with a radiotherapy mechanism.

Further, the radiotherapy mechanism includes an electric push rod; the electric push rod is connected to the output end of the electric sliding rail; the output end of the electric push rod is connected to a rotating block; the rotating block is far away from the electric push rod. One end of the rod is hinged with a radiotherapy machine.

Further, a power chamber is provided in the protective device body; two groups of first motors are provided in the power chamber; the output ends of the two groups of the first motors respectively extend into a group of first slide slots, and the transmission A group of first screw rods are connected.

Further, one end of each group of first screw rods away from the corresponding group of first motors is rotatably connected to the inner wall of a corresponding group of first chute; threaded connection.

Further, the first lead rod includes a first rod body; a set of second sliding slots are respectively opened on the two side walls of the first rod body; the second lead rod includes a second rod body; the second rod body A third chute is provided on one side wall of the second rod body; a slider is provided on a side wall of the second rod away from the third chute.

Further, the sliders on several groups of the second rods are slidably connected in the third chute on the adjacent group of second rods; the sliders on the two groups of the second rods close to the first rods They are respectively slidably connected in the second slide grooves on both sides of the first rod body.

The beneficial effects of the utility model are:

1. By adjusting the horizontal position of the two sets of anti-proliferation components, and then controlling the first lead rod and several groups of second lead rods to descend and touch the patient's body surface respectively, the patient's diseased part is isolated from the normal part, avoiding radiotherapy. There will be low-dose stray radiation diffused outside the radiation exposure site to kill the normal tissue and organ cells of the human body, which improves the safety of the protective device.

2. The electric push rod is driven by the electric slide rail to adjust between the two sets of anti-proliferation components, and then the electric push rod drives the radiotherapy machine to rise or fall. By rotating the rotating block and the radiotherapy machine, the irradiation height, irradiation direction and irradiation angle can be adjusted. Arbitrary adjustment improves the practicability of the protective device.

Other features and advantages of the present invention will be set forth in the following description, and, in part, will be apparent from the description, or can be learned by practicing the present invention. The objectives and other advantages of the utility model can be realized and obtained by the structures pointed out in the description and accompanying drawings.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description The drawings show some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creative work.

Fig. 1 shows the structural representation of the protective device of the utility model embodiment;

Fig. 2 shows the top view cross-sectional schematic view of the protective device of the utility model embodiment;

Fig. 3 shows the enlarged schematic view of Fig. 1A place of the utility model embodiment;

Fig. 4 shows the structural representation of the anti-proliferation assembly of the utility model embodiment;

Fig. 5 shows the structural representation of the first lead rod of the utility model embodiment;

Fig. 6 shows a schematic view of the structure of the second lead rod in the embodiment of the present invention.

In the figure: 1. Protective device body; 2. Radiotherapy chamber; 3. Chamber door; 4. Ventilation filter; 5. First chute; 6. Electric slide rail; 7. Radiotherapy mechanism; 8. Anti-proliferation component; 9. Headrest; 10. First screw rod; 11. Power cavity; 12. First motor; 701. Electric push rod; 702. Rotating block; 703. Radiotherapy machine; 801. Lead plate; , the first lead rod; 804, the second lead rod; 805, the second motor; 806, the second screw; 8031, the first rod body; 8032, the second chute; 8041, the second rod body; 8042, the third slide Groove; 8043, slider.

Detailed ways

In order to make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely explained below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described The embodiments are some embodiments of the present utility model, but not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

The embodiment of the utility model proposes a 3D printing-based radiotherapy field stray radiation protection device, which includes a protection device body 1 . Exemplarily, as shown in Figure 1 and Figure 2, a radiotherapy chamber 2 is provided on the top of the protective device body 1; an opening is provided on one side of the inner wall of the radiotherapy chamber 2; a ventilation filter is provided at the opening. net 4; the bottom of the radiotherapy cabin 2 is provided with a headrest 9 on the side close to the ventilation filter 4; two sets of first chute 5 are symmetrically opened on the inner walls of both sides of the radiotherapy cabin 2; the radiotherapy cabin 2 There are two sets of anti-diffusion components 8 inside; the two ends of each set of anti-diffusion components 8 are respectively slidably connected in two sets of first chute 5; The door 3; the side wall of the door 3 close to the radiotherapy chamber 2 is provided with an electric slide rail 6; the output end of the electric slide rail 6 is connected with a radiotherapy mechanism 7 through transmission. The protection device body 1 is provided with a power chamber 11; the power chamber 11 is provided with two groups of first motors 12; the output ends of the two groups of the first motors 12 respectively extend into a group of first chute 5 , and a group of first screw mandrels 10 are connected in transmission; one end of each group of first screw mandrels 10 away from the corresponding group of first motors 12 is rotatably connected to the inner wall of the corresponding group of first chute 5; The first threaded mandrels 10 are threadedly connected with a group of anti-diffusion components 8 respectively.

Exemplarily, as shown in FIG. 3 , the radiotherapy mechanism 7 includes an electric push rod 701; the electric push rod 701 is transmission-connected to the output end of the electric slide rail 6; A rotating block 702 is connected; the end of the rotating block 702 away from the electric push rod 701 is hinged to a radiotherapy machine 703 .

Exemplarily, as shown in FIG. 4 , the anti-diffusion assembly 8 includes a lead plate 801; the lead plate 801 is provided with a telescopic cavity 802; the bottom of the telescopic cavity 802 is movably penetrated by a first lead rod 803; There are several groups of second lead rods 804 slidingly connected to the two sides of the first lead rod 803 in sequence; two groups of second motors 805 are arranged inside the lead plate 801; the output ends of the two groups of second motors 805 extend to telescopic In the cavity 802, a group of second screw rods 806 are respectively driven and connected; the ends of the two groups of second screw rods 806 away from the corresponding group of second motors 805 are connected with a group of second lead rods 803 away from the first lead rods 803 respectively. The rod 804 is threaded.

Exemplarily, as shown in FIG. 5 and FIG. 6, the first lead rod 803 includes a first rod body 8031; a set of second slide grooves 8032 are respectively opened on the two side walls of the first rod body 8031; The second lead rod 804 includes a second rod body 8041; a third sliding groove 8042 is provided on a side wall of the second rod body 8041; block 8043. The sliders 8043 on several groups of second rod bodies 8041 are all slidably connected in the third chute 8042 on an adjacent group of second rod bodies 8041; The sliding blocks 8043 are respectively slidably connected in the second sliding slots 8032 on both sides of the first rod body 8031 .

Utilizing a 3D printing-based radiation protection device for stray radiation in the radiotherapy field proposed by the utility model, its working principle and usage method are as follows: first use a 3D printer to print out the structure of the protection device body 1, and then assemble the protection device with other structures . When the protective device is in use, the patient’s head is lying in the radiotherapy chamber 2 with the head facing the headrest 9, and then the two groups of first motors 12 are respectively controlled to drive the first screw rod 10 to rotate, so as to control a group of anti-diffusion The horizontal position of the component 8 makes the two groups of anti-diffusion components 8 respectively located on both sides of the lesion of the patient, and then controls the two groups of second motors to drive the two groups of second screw rods 806 to rotate, through which the two groups of second screw rods 806 and the lead plate The thread connection relationship of two sets of second lead rods 804 on both sides of the bottom edge of 801 makes the first lead rod 803 and several groups of second lead rods 804 descend and touch the patient's body surface respectively, so that the lesion of the patient is different from the normal one. Parts isolated. The electric push rod 701 is driven by the electric slide rail 6 to be adjusted between the two groups of anti-proliferation components 8, and the radiation direction and radiation angle of the radiation therapy machine can be adjusted by rotating the rotating block 702 and the radiation therapy machine 703, and then the electric push rod 701 is used to drive the radiation therapy The machine 703 rises or falls to realize the adjustment of the irradiation height, and then the door 3 is covered to perform radiotherapy to the patient.

The electric push rod 701 is driven by the electric slide rail 6 to be adjusted between the two groups of anti-diffusion components 8, and then the electric push rod 701 drives the radiotherapy machine 703 to rise or fall, and by rotating the rotating block 702 and the radiotherapy machine 703, the irradiation height and irradiation height can be realized. Arbitrary adjustment of direction and irradiation angle improves the practicability of the protective device.

By adjusting the horizontal positions of the two sets of anti-proliferation components 8, and then controlling the first lead rod 803 and several groups of second lead rods 804 to descend and touch the patient's body surface respectively, the diseased part of the patient is isolated from the normal part, avoiding radiotherapy Sometimes there will be low-dose stray radiation diffused outside the radiation exposure site to kill the normal tissue and organ cells of the human body, which improves the safety of the protective device.

Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it can still modify the technical solutions described in the aforementioned embodiments, or perform equivalent replacements for some of the technical features; and These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims (8)

1. Radiation therapy is penetrated open-air stray radiation protector based on 3D prints, its characterized in that: comprises a protective device body (1); a radiotherapy bin (2) is arranged at the top of the protective device body (1); two groups of first sliding grooves (5) are symmetrically formed in the inner walls of two sides of the radiotherapy bin (2); two groups of diffusion prevention assemblies (8) are arranged in the radiotherapy bin (2); two ends of each group of diffusion prevention assemblies (8) are respectively and slidably connected in the two groups of first sliding grooves (5);

the diffusion prevention assembly (8) comprises a lead plate (801); a telescopic cavity (802) is arranged in the lead plate (801); a first lead rod (803) is movably penetrated at the bottom of the telescopic cavity (802); two sides of the first lead rod (803) are sequentially connected with a plurality of groups of second lead rods (804) in a sliding manner; two groups of second motors (805) are arranged in the lead plate (801); the output ends of the two groups of second motors (805) extend into the telescopic cavity (802), and are respectively connected with a group of second screw rods (806) in a transmission way; one ends of the two groups of second screw rods (806) far away from the corresponding group of second motors (805) are respectively in threaded connection with a group of second lead rods (804) far away from the first lead rods (803).

2. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 1, wherein: an opening is arranged on the inner wall of one side of the radiotherapy bin (2); a ventilation filter screen (4) is arranged at the opening; a headrest (9) is arranged at one side of the bottom of the radiotherapy bin (2) close to the ventilation filter screen (4).

3. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 2, wherein: a bin gate (3) is hinged at the edge of one side of the top of the protective device body (1); an electric sliding rail (6) is arranged on one side wall of the bin gate (3) close to the radiotherapy bin (2); the output end of the electric sliding rail (6) is in transmission connection with a radiotherapy mechanism (7).

4. A radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 3, wherein: the radiotherapy mechanism (7) comprises an electric push rod (701); the electric push rod (701) is in transmission connection with the output end of the electric slide rail (6); the output end of the electric push rod (701) is in transmission connection with a rotating block (702); one end of the rotating block (702) far away from the electric push rod (701) is hinged with a radiotherapy machine (703).

5. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 2, wherein: a power cavity (11) is arranged in the protective device body (1); two groups of first motors (12) are arranged in the power cavity (11); the output ends of the two groups of first motors (12) respectively extend into one group of first sliding grooves (5), and are connected with one group of first screw rods (10) in a transmission way.

6. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 5, wherein: one end of each group of first screw rods (10) far away from the corresponding group of first motors (12) is rotationally connected to the inner wall of the corresponding group of first sliding grooves (5); the two groups of first screw rods (10) are respectively in threaded connection with one group of diffusion prevention assemblies (8).

7. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 2, wherein: the first lead rod (803) comprises a first rod body (8031); a group of second sliding grooves (8032) are respectively formed in the two side walls of the first rod body (8031); the second lead rod (804) comprises a second rod body (8041); a third chute (8042) is formed in one side wall of the second rod body (8041); a sliding block (8043) is arranged on one side wall, far away from the third sliding groove (8042), of the second rod body (8041).

8. The radiation therapy radiation field stray radiation protection device based on 3D printing according to claim 7, wherein: the sliding blocks (8043) on the plurality of groups of second rod bodies (8041) are all connected in a third sliding groove (8042) on the adjacent group of second rod bodies (8041) in a sliding way; the sliding blocks (8043) on the two groups of second rod bodies (8041) close to the first rod body (8031) are respectively and slidably connected in the second sliding grooves (8032) on two sides of the first rod body (8031).

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