Cylindrical Limb Fixed Radiation Therapy Body Positioning Hollow Fixture

Abstract

The invention provides a cylindrical limb fixing type radiation treatment body part positioning hollow fixing frame which is composed of two parts of a cylindrical limb integrated fixing frame and a tenon-and-mortise limb fixing type body membrane. Positioning and fixing of the external contour of the human body trunk part can be realized, and the cylindrical limb fixing type radiation treatment body part positioning hollow fixing frame is particularly suitable for the inferior belly part of a patient so that an objective of zero displacement or being close to zero displacement can be achieved. A fixing bottom plate and a treatment couch are enabled to be connected together by bottom plate positioning holes and bottom plate composite positioning holes so that error rate can be reduced. Loosing in the use period can be prevented by a cylindrical locking structure and a membrane strip cross stress structure so that the human body can be prevented from being squeezed. Scalability error of the body membrane can be reduced by the integrated pressing strips. Dosage distribution is enabled to be more accurate by the hollow design of the fixing bottom plate. Operation is enabled to be simple and convenient by the humanized design of the fixing bottom plate positioning holes and the pressing strip handles so that all shortcomings and defects in existing radiation treatment positioning structures can be effectively solved. The cylindrical limb fixing type radiation treatment body part positioning hollow fixing frame is reasonable in design, simple, one-step in locking, convenient, safe and environment-friendly in operation and relatively high in practicality and generality.

Description

technical field [0001] The invention belongs to the technical field of radiotherapy positioning, and relates to a positioning and fixing device for radiotherapy, in particular to a cylindrical limb fixed radiotherapy body positioning hollow fixing frame. Especially for the positioning and fixing of the lower abdomen of the human body, it is an important tool for precise positioning and implementation in radiation therapy. Background technique [0002] Low-temperature thermoplastic sheet is a new type of medical material processed by a series of physical and chemical methods, which is specially synthesized polymer polyester. It is used for orthopedic external fixation, orthotics, and braces. Because the material has outstanding properties such as non-absorbing radiation, good shaping effect after heating and softening, and unique shape memory function (when the shaping is not satisfactory, it can be reheated, reshaped or partially heated and reshaped), etc., As well as simpl...

AI Technical Summary

Problems solved by technology

[0004] Insufficient positioning of current radiotherapy: (1) There is a fixed gap between the low-temperature thermoplastic film and the bottom plate; (2) The stretchability of the low-temperature thermoplastic film is difficult to control; (3) The locking is prone to fall off during the fixation process, and the fixation fails; (4) Skin pinch injury accident caused by the fixing process; (5) The fixing accessories are designed in separate parts, which are easy to lose; (6) The mechanical structure of the fixing lock is directly stressed; (6) The limb limit fixing is missing; and cumbersome

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