Positioning device for breast cancer prone treatment based on 3D printing and preparation method thereof

Abstract

The invention discloses a positioning device for breast cancer prone treatment based on 3D printing. The device comprises a positioning cover and bracket bodies which are symmetrically arranged on twosides of the bottom of the positioning cover. The positioning cover comprises a cover body, a silicone cushion layer and a plurality of film pressure sensors attached between the cover body and the silicone cushion layer. The cover body is formed by 3D printing based on personal medical image data. The device also comprises a pressure tester which is electrically connected to wiring terminals ofthe plurality of film pressure sensors. The invention provides the positioning device for breast cancer prone treatment based on 3D printing and a preparation method thereof, the characteristics of the shape of an individual mammary gland can be fully fitted, the pressure sensors are combined, a breast tissue is not affected by the pressure deformation, the seamless contact between the mammary gland and the positioning device is achieved, the scattering dose on a skin surface is raised, at the same time, the repeatability of each placement is easy to realize, therefore, the accuracy of a treatment target area is ensured, the precise radiotherapy is achieved, and therefore, the therapeutic effect of the radiotherapy is improved.

Description

technical field [0001] The invention relates to the technical field of radiotherapy fixation devices, in particular to a positioning device for breast cancer prone treatment based on 3D printing and a preparation method thereof. Background technique [0002] Breast cancer is a serious threat to women's health. The incidence of breast cancer in all countries in the world is increasing year by year, and it is beginning to tend to be younger, and my country is no exception. With the development of diagnosis and treatment technology, the mortality rate of breast cancer has a certain downward trend, and radiotherapy occupies a very important position in it. Combined with surgery, radiotherapy, chemotherapy, endocrine and targeted therapy, the comprehensive treatment of breast cancer has made breast cancer a Most common malignancy among cancer survivors. Most breast cancer patients need radiotherapy after breast-conserving surgery. [0003] At present, a round hole with a fixed ...

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Problems solved by technology

[0004] 1. The breast size of each patient is different and there are huge individual differences, especially for patients who have undergone local resection of breast cancer, the breast shape and volume are smaller; the traditional round hole cannot be changed according to the breast size of different patients;

[0005] 2. During radiotherapy, the ideal state of the breast is to ensure that the breast is in a natural sagging state; however, on the traditional treatment bed, it is impossible to judge whether it is a natural sagging without extrusion. If there is extrusion, it may cause the internal lesions of the breast tissue Displacement, resulting in inaccurate target area, greatly weakening the effect of radiotherapy;

[0006] 3. When the patient is prone, the shape of the breast is similar to a cone. The general hole can only fix the position of the bottom surface of the cone, but not the axis position from the center of the bottom surface of the cone to the apex of the nipple, so the position of the breast cannot be fixed; accurate position is the key to radiotherapy , the location is inaccurate, seriously affecting the curative effect of radiotherapy, and causing normal tissues to be irradiated, increasing complications

At present, in the preparation for radiotherapy, medical staff will attach tissue compensation glue to the patient to be radiotherapy or leave it alone. For prolapsed mammary glands, it is very difficult to attach tissue compensation glue, and it is troublesome to attach it each time, and it is not properly attached. also affect the effect of radiotherapy

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