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Radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack

A radiation therapy, head and neck technology, applied in the field of radiation therapy body positioning devices, achieves the effects of convenient and accurate angle adjustment, reasonable design, and convenient operation

Active Publication Date: 2016-12-21
ZHEJIANG CANCER HOSPITAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the disadvantages of traditional head radiotherapy positioning, and provide a key component in precise radiotherapy positioning—radiation therapy head and neck positioning craniofacial bone eccentric sliding ball fixator

Method used

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  • Radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack
  • Radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack
  • Radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 Radiotherapy Head and Neck Positioning Craniofacial Bone Eccentric Sliding Ball Fixator

[0026] see figure 1 , figure 2 , image 3 , the structure consists of head base plate 147, maxillary (triangular card) support assembly 229, bite device sliding ball assembly 230, tripod fornix right branch 256, tripod fornix left branch 257, maxillary base teeth anterior hole 259, nasion fixator 260, nasal The base tooth front hole 261, the tripod fornix front branch 262 and the cam type lock column 263 are formed. The overall structure is a three-legged support structure. The three cam-type lock posts 263 are three fulcrums and are in the shape of a "product". A three-legged dome structure with a radian is connected between the two cam-type lock columns 263 at the bottom of the "pin" structure; see image 3 One end of the front branch 262 of the tripod vault is connected to the cam-type lock post 263, and the other end is connected to the tripod vault structure...

Embodiment 2

[0033] Embodiment 2 uses principle and method:

[0034] The first step: the locking of the tripod vault structure and the base plate 147 of the head.

[0035] ① into the lock: (see Figure 20 ) The four expansion petals 10, due to their own material factors, are always kept in a mutual (inward) closed state under the condition of no lateral external force, and the outer diameter of the lower petal edge 168 is smaller than the expansion hole on the plug seat 153 (that is, the head base plate 147) 152 diameter, the expansion valve 10 is smoothly inserted into the corresponding expansion hole 152, and the anti-rotation gap 160 corresponds to the anti-rotation pin 148 until the lower wall of the post seat 167 and the upper wall of the bolt seat 153 fit together. ② Locking: see Figure 19 , when the lower wall of the column seat 167 and the upper wall of the bolt seat 153 (i.e. the head base plate 147) fit together, the bolt positioning protrusion 11 on the outer wall of the expa...

Embodiment 3

[0041] Embodiment 3 Comparison between this invention and the original (sliding column) mode

[0042] The comparison results are shown in Table 1.

[0043] Table 1

[0044]

[0045]

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PUM

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Abstract

The invention provides a radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack. The radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack is constituted by a head bottom plate, an upper jaw bone supporting assembly, an occluder sliding ball assembly, a three-leg fornix right support, a three-leg fornix left support, a jaw base tooth front hole, a nasion fixing device, a noise base tooth front hole, a three-leg fornix front support 262, and a cam type locking column. Relative fixing is realized by teeth biting supporting points of a fixing support, and the supporting body of the fixing support is used to press the bone mark of the head to realize the relative fixing of the nasion part, and by adopting cooperation with a special positioning head rack series, limiting fixing of a head and a neck of a human body is realized, and zero displacement is realized or almost realized, and therefore disadvantages and defects of conventional head radiation therapy positioning structures are effectively solved. The radiation therapy head and neck positioning skull and facial bone eccentric sliding ball fixing rack has advantages of reasonable design, convenient and safe operation, obvious fixing effect, strong practicability, and strong versatility.

Description

technical field [0001] The invention belongs to the technical field of human body positioning devices for radiotherapy, and relates to a head and neck positioning cranial bone eccentric sliding ball fixing frame for radiotherapy, which is a matching auxiliary device on the head and neck positioning frame for radiotherapy—the craniofacial bone eccentric sliding ball The fixed device is suitable for the fixation of the human head, neck and shoulders with large curve fluctuations. It is an important part of precise positioning and implementation in modern radiation therapy. Background technique [0002] Silica gel is a highly active adsorption material, which is an amorphous substance, and its chemical formula is mSiO2 nH2O; it does not react with any substance except strong alkali and hydrofluoric acid, is insoluble in water and any solvent, and is non-toxic and tasteless. It has high adsorption performance, good thermal stability, stable chemical properties, and high mechanic...

Claims

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Application Information

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IPC IPC(8): A61N5/00A61N5/10
CPCA61N5/00A61N5/10A61N2005/1097
Inventor 张鹏封巍
Owner ZHEJIANG CANCER HOSPITAL
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