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Tissue equivalent filler for cancer radiotherapy

A tissue equivalent, radiotherapy technology, applied in the field of medical devices, can solve the problems of incompatibility of the patient's body, affecting the accuracy and uniformity of radiation dose, etc., and achieve the effect of simple design, practical design and convenient use.

Active Publication Date: 2014-08-06
ZHEJIANG UE MEDICAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the tissue-equivalent fillers used in domestic hospitals are basically imported products from abroad, and there is also a common shortcoming. The contact between the tissue-equivalent fillers and the patient's body is not compliant, so that the tissue-equivalent fillers Air bubbles exist between the patient and the body, thereby affecting the accuracy and uniformity of radiation dose

Method used

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  • Tissue equivalent filler for cancer radiotherapy

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Liquid paraffin (36 # Liquid paraffin), styrene-ethylene-butadiene tri-block copolymer (number average molecular weight is 100,000) and silica powder (nano-scale silica powder prepared by gas phase method) in a mass ratio of 94:5: 1 Mix, stir evenly, inject into the mold, and solidify at 190°C to obtain tissue-equivalent fillers.

[0021] figure 1 The appearance of the tissue-equivalent filler prepared for this example is a pentagonal truss structure with a thickness of 5 mm, an angle between the top surface and the side wall of 135°, and the outer surface of the top surface is laminated with 0.02 mm of polyurethane The outer surface of the bottom surface is laminated with a 0.01mm polyethylene film.

Embodiment 2

[0023] Liquid paraffin (36 # liquid paraffin), styrene-ethylene-butadiene triblock copolymer (number average molecular weight is 100,000) and silica powder (nano-scale silica powder prepared by gas phase method) in a mass ratio of 96:3: 1 Mix, stir evenly, inject into the mold, and solidify at 190°C to obtain tissue-equivalent fillers.

[0024] The tissue-equivalent filler prepared in this example has a pentagonal frustum structure with a thickness of 10 mm, an angle between the top surface and the side wall of 135°, and a 0.03 mm polyethylene terephthalate on the outer surface of the top surface. Glycol ester film.

Embodiment 3

[0026] Liquid paraffin (36 # Liquid paraffin) and styrene-ethylene-butadiene triblock copolymer (number average molecular weight: 100,000) were mixed at a mass ratio of 90:10, stirred evenly, injected into the mold, and cured at 190°C to obtain tissue equivalent filling thing.

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Abstract

The invention discloses tissue equivalent filler for cancer radiotherapy. Liquid paraffin and ethylene-butadiene-styrene block copolymer are mixed into mixture; the mixture is heated and cured to obtain the tissue equivalent filler. The ethylene-butadiene-styrene block copolymer in the mixture is 3-20% in mass fraction. The tissue equivalent filler can fitly attach to the body of a patient, and no bubble forms between the filler and the body of the patient; the tissue equivalent filler is good in transparency and allows doctors to see a mark on the body of the patient through the filler, so that radiation dosage is more accurate and more uniform.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a tissue-equivalent filler for cancer radiotherapy. Background technique [0002] So far, cancer treatment methods include surgery, radiation therapy, chemotherapy, hormone therapy, gene therapy, and immunotherapy. Among them, surgery, radiotherapy, and chemotherapy have become the main means. [0003] Radiation therapy (referred to as radiotherapy) is to use high-energy particles or rays, such as X-rays or gamma rays, to kill cancer cells and treat cancer. Radiation therapy is only a few decades old, but it is developing rapidly. Due to the use of ultra-high pressure treatment machines, the improvement of auxiliary tools and the accumulation of experience, the treatment effect has been significantly improved, and it has become one of the most important means in cancer treatment. [0004] At present, about 70% of cancer patients need radiation therapy in the process of cancer tr...

Claims

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Application Information

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IPC IPC(8): A61N5/10
Inventor 李宏博金京陆强朱剑钧黄巧虹李永武李遇龙
Owner ZHEJIANG UE MEDICAL
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