3D printing device of tissue compensation film for radiotherapy

Abstract

The invention discloses a 3D printing device of tissue compensation film for radiotherapy. The 3D printing device comprises a bottom plate and is characterized in that a positioning mechanism is fixedly connected to the upper end of the bottom plate, an air bag mechanism is fixedly connected to the lower end of the bottom plate, multiple sets of first through holes are formed in the middle of the bottom plate, and a detection mechanism is fixedly connected to the interiors of the first through holes. The top end of the detection mechanism is connected with a hydraulic mechanism through a pipeline, the positioning mechanism comprises a first positioning claw, a second positioning claw and a third positioning claw, the air bag mechanism comprises an air bag, an air inlet pipe is arranged on one side of the air bag, multiple sets of second through holes are formed in the middle of the air bag, and the lower ends of the second through holes are fixedly connected with the detection mechanism. The detection mechanism comprises an outer pipe, mercury is arranged on the side wall of the bottom of the outer pipe, a first spring is fixedly connected to the upper end of the outer pipe, and an inner pipe is movably connected to the interior of the first spring. According to the invention, the 3D printing device has the characteristics of high practicability and reduction of radiation on human body.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a 3D printing device for a tissue compensation film for radiotherapy. Background technique [0002] Radiation therapy, as one of the main methods for treating tumor diseases, has been widely used clinically. The precise control of radiation therapy dose is very important in radiation therapy and is the core content of precision medicine. High-energy X (γ) rays and electron rays There is a dose build-up effect. The dose after the dose build-up area is the actual dose acting on the human body. One of the depth dose distribution characteristics of different energy rays is that the surface dose decreases with the increase of the ray energy. The depth of the maximum dose point and the percentage depth dose The depth from the surface to the maximum dose point is the dose build-up area, which causes the problem of insufficient target dose in the treatment of superficial lesions ...

AI Technical Summary

Problems solved by technology

[0002] Radiation therapy, as one of the main methods for treating tumor diseases, has been widely used clinically. The precise control of radiation therapy dose is very important in radiation therapy and is the core content of precision medicine. High-energy X (γ) rays and electron rays There is a dose build-up effect. The dose after the dose build-up area is the actual dose acting on the human body. One of the depth dose distribution characteristics of different energy rays is that the surface dose decreases with the increase of the ray energy. The depth of the maximum dose point and the percentage depth dose The depth from the surface to the maximum dose point is the dose build-up area, which causes the problem of insufficient target dose in the treatment of superficial lesions (such as breast cancer, skin cancer, etc.). Therefore, in radiation therapy, tissue compensation is usually used To increase the superficial dose of the target area, the current practice is to scan the lesion with a CT scanner to obtain the patient's CT image data, transmit the patient's CT image data to the treatment planning system, and then obtain the radiotherapy plan through special 3D software The three-dimensional contour data of the tissue compensation film, and then the mold of the tissue compensation film is made by 3D printing to obtain a personalized tissue compensation film. Radiation will be generated under X-rays, which will cause certain damage to the human body. Therefore, it is necessary to design a 3D printing device for tissue compensation membranes for radiotherapy that is practical and reduces the radiation received by the human body.

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