Radiotherapy three-dimensional conformal intensity-modulated collimator device and use method thereof

By using liquid high-density filling material and an automatic pressurizer in the structural cavity within the annular shell, combined with 3D printing technology, the high cost and poor effectiveness of fixed-shape collimators in flash radiotherapy have been solved, achieving high-precision conformal and intensity-modulated treatment to meet the needs of rapid response.

CN121221963APending Publication Date: 2025-12-30INST OF FLUID PHYSICS CHINA ACAD OF ENG PHYSICS
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Patent Information

Application Number
CN202511686281.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-11-18
Publication Date
2025-12-30

AI Technical Summary

Technical Problem

In existing flash radiotherapy, fixed-shape collimators suffer from high costs, material waste, and poor treatment effects. Furthermore, existing 3D printing technologies for metal powders and resins present challenges in terms of density uniformity and structural complexity during the filling process.

Method used

The device employs multiple structural cavities within a ring-shaped shell, utilizing liquid high-density filling material and an automatic pressurizer to achieve conformal and intensity-modulated treatment. Combined with 3D printing technology to customize the ring-shaped shell, the cavity shape and thickness are designed according to the three-dimensional structure of the patient's tumor tissue, enabling rapid-response flash radiotherapy.

Benefits of technology

It achieves high-precision conformal and intensity-modulated radiotherapy, reduces costs, and the liquid filling material is reusable, meeting the rapid response requirements of flash radiotherapy and improving treatment outcomes.

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Abstract

The invention relates to the technical field of radiotherapy, and provides a radiotherapy three-dimensional conformal intensity-modulated collimator device, which comprises a plurality of treatment heads and an annular shell, the plurality of treatment heads are arranged at equal intervals along the annular direction, a plurality of structural cavities are formed in the annular shell, the plurality of structural cavities are in one-to-one correspondence with the plurality of treatment heads, and the plurality of structural cavities and the plurality of treatment heads are in one-to-one correspondence. Every two adjacent structural cavities are communicated with each other, and the annular shell is provided with a filling opening and an exhaust opening. The storage tank is filled with a liquid high-density filling material; the automatic pressurizer is provided with a pressurizing opening and an air suction opening, the pressurizing opening is communicated with the filling opening through a first pipeline, a first valve is installed on the first pipeline, the air suction opening is communicated with the exhaust opening through a second pipeline, and a second valve is installed on the second pipeline.
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