Placement positioning device of medical electron linear accelerator

Abstract

The invention discloses a placement positioning device of a medical electron linear accelerator. A treatment table comprises upper bed boards and a lower bed board, wherein the two groups of upper bedboards are respectively connected with a rotary shaft fixed on the lower bed board; a longitudinal scissors fork mechanism and a horizontal scissors fork mechanism are respectively arranged between the two groups of upper bed boards and the lower bed board; the upper bed boards are in higher pair contact with an arc-shaped surface of an upper slideway; a scissors fork arm located at the outermostend on one side of the longitudinal scissors fork mechanism is hinged to a push-and-pull block; a nut is welded on the push-and-pull block; the nut is spirally matched with a screw; the parts near the two outer ends of the screw are rotatably connected with a bearing seat mounted on the lower bed board respectively; a locking mechanism is arranged between the upper slideway and a lower slideway on the lower bed board; and the placement positioning device also comprises an upper laser light, a left laser light, a right laser light, a left second-rate laser light and a right second-rate laser light. The treatment table adopts a double-layer bed board structure, so that the tilting motion of the treatment table is increased, the adjustability of the treatment table is improved, and the accurate placement positioning can be achieved rapidly and automatically.

Description

Technical field: [0001] The present invention relates to the field of medical instruments, in particular to a positioning device for a medical electron linear accelerator. Background technique: [0002] Radiation therapy is a treatment that uses radiation to irradiate malignant tumors to inhibit their growth and cause death. Medical electron linear accelerators are the main means of radiation therapy today. Accurate radiotherapy is the most important goal in the development of radiotherapy technology. The so-called precise radiotherapy must Accurate diagnosis, precise design, precise positioning, precise positioning and precise treatment are achieved, and precise positioning and positioning are one of the most important elements of precise treatment. In the prior art, different methods are used to fix the patient on the CT scanning bed according to the tumor in different parts of the patient during positioning. For example, a negative pressure bag is used to fit the body sur...

AI Technical Summary

Problems solved by technology

After the positioning is completed, the method of setting marks on the patient's body surface and laser to repeatedly mark the marks on the body surface is used to reproduce the body position during CT scanning. During this process, the treatment bed needs to be moved to position the positioning laser in the linear accelerator separately. In terms of marking, at least two staff members are required to complete the above operations visually in the actual treatment, and the bed board of the treatment bed can only move horizontally and vertically and rotate horizontally, so the positioning time is long and the error is relatively small Large, cannot quickly perform positioning

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