Individualized vaginal implantation template and manufacturing method thereof

Abstract

The invention discloses an individualized vaginal implantation template and a manufacturing method thereof, which belong to the field of medical auxiliary instruments. The invention aims to solve theproblem that the implantation accuracy of an existing implantation template is not guaranteed. According to the invention, a coordinate system is established by taking the central axis of a universalmold worn by a patient as a coordinate axis and taking a contact surface of the mold and a cervix as a zero plane; according to the size of the maximum section, parallel to the zero plane, of a targetarea and the thickness of the universal mold, the needle spacing of the section is set, and needles are arranged in a matrix; an implantation dot matrix is uniformly shrunk on the zero plane of the universal mold to acquire a needle outlet position of the implantation point position on the universal mold; the needle outlet angle and the needle inlet length of each implantation needle are calculated by calculating each needle outlet position on the universal mold and the implantation dot matrix in a tumor; and the working channel of each implantation needle is marked by adopting a limiter according to the needle inlet length of each implantation needle entering the tumor tissues and the implantation needle channel length. The post-installation implantation precision is remarkably improved.

Description

technical field [0001] The invention belongs to the field of medical auxiliary devices, and in particular relates to an individualized vaginal implantation template suitable for brachytherapy of gynecological tumors and its manufacturing technology. Background technique [0002] Brachytherapy (taken from the Greek word brachys, meaning "short distance"), also known as internal radiation, involves placing the source channel precisely in the cancerous lesion the tumor After planning, let the radioactive source enter the body for treatment, so it is also called afterloading treatment. Brachytherapy is characterized by the fact that the intensity of the radiation drops off steeply with distance and that the radiation affects only a very limited area around the radiation source. Thus, the exposure to normal tissues farther from the radiation source can be reduced. Implantation therapy is a post-loading treatment method that uses source needles to install the source channel insi...

AI Technical Summary

Problems solved by technology

[0006] Although the existing application number 201711298634.X for example discloses the "Manufacturing Method of Individualized Auxiliary Device for Cervical Cancer Cavity Combined with Parametrial Insertion Treatment", the products obtained by the disclosed manufacturing method are likely to appear larger in actual operation. Error: The image data obtained are inconsistent with the vaginal filling state during treatment. When the auxiliary device is inserted into the vagina during treatment, the position of the needle will be shifted due to the force of the vaginal wall, or even the direction of the central axis will change and the vaginal deformation will cause tumors. The position changes, and the accuracy of implantation is not guaranteed; and it is not feasible to determine the caliber of the implantation channel according to the location and size of the tumor, because the designed auxiliary device may not be placed in the patient's vagina at all; in addition, the invention has no A clear source distribution method is not practicable; in short, its public technical solution cannot guarantee the effectiveness and accuracy of implantation

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