Accurate radiotherapeutic posture adjusting device for body tumor

Abstract

An accurate radiotherapeutic posture adjusting device for a body tumor belongs to the technical field of medical apparatuses. The accurate radiotherapeutic posture adjusting device comprises a fixed plate, a positioning frame, an indication rod and a mark pin; the indication rod is inserted into a panel mesh of the positioning frame to implement radiotherapeutic posture adjustment; and the mark pin is drilled into a body bone, such as the ilium ridge, pubis or breastbone, of a patient as a mark to adjust the posture of the patient accurately. The device has the advantages that the tip of the indication rod inserted into the panel mesh of the positioning frame just faces the mark pin placed into the body bone of the patient, the scale of depth in which the indication rod is inserted into the panel mesh is read, so that the posture, including left-right, head-foot and front-back directions, of the body of the patient relative to the fixed plate is adjusted accurately, a present body filmis combined for fixation, and thus, radiotherapeutic posture adjusting is completed; the radiotherapeutic posture adjustment of the patient can be more precise and repeatable, errors in posture adjustment are reduced, and the precision of tumor radiotherapy is improved; and the mark pin made of a titanium kirschener wire is small in diameter, causes little wound of the patient, is biologically compatible and easy to be accept by the patient.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a positioning device for precise radiotherapy of body tumors. Background technique [0002] In the process of radiotherapy for malignant tumors, accurate radiotherapy positioning is one of the key links to ensure accurate radiotherapy. [0003] Body membranes or vacuum pads are often used to fix the body position for radiotherapy. Plasma fixation method is for obese patients, because the bony anatomical landmarks on the body surface are not clear, the phantom can slide relative to the patient’s body, resulting in positioning errors; the vacuum pad fixation method uses skin markers, but the skin is mobile, and positioning errors may also occur. bit error. [0004] With the development of modern radiotherapy technology, image-guided equipment such as electronic portal imaging system (EPID) and cone beam CT (CBCT) have appeared, which can be corrected before radiotherapy. ...

AI Technical Summary

Problems solved by technology

However, setup correction requires image registration, which is labor-intensive and time-consuming, which limits its wide application in every radiotherapy for every patient

In addition, related equipment needs to be configured, and it cannot be widely used in many grassroots radiotherapy units.

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