Plastic brachytherapy sources

A plastic, source technology, used in therapy, radiation therapy, X-ray/γ-ray/particle irradiation therapy, etc., can solve the problems of destroying cancer, short half-life, etc., and achieve the effect of low cost

Inactive Publication Date: 2007-01-10
INT BRACHYTHERAPY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may be due to the fact that the permanently implanted source includes a radioactive isotope with a relatively short half-life, so the radiation is completely exhausted after a few months, during which time it has destroyed the cancer

Method used

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  • Plastic brachytherapy sources
  • Plastic brachytherapy sources
  • Plastic brachytherapy sources

Examples

Experimental program
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Embodiment Construction

[0048] The present invention relates to the manufacture and deployment of novel brachytherapy seeds. The seed consists of radioactive source for therapy A plastic capsule of the body and markers used to determine its location in the patient's body. Couplers are optionally incorporated at each end of the seed to allow connection to ancillary devices including spacers, holders, imaging intensifiers, and dispensers.

[0049] figure 1 and figure 2 Each is a cross-sectional view of a plastic seed in which the radioactive source material is thoroughly and uniformly mixed in a solid cylindrical core. exist figure 1 Here, the core 100 is covered by a thin protective layer 110 of non-radioactive plastic. exist figure 2 In the embodiment, the core 200 is contained in a sealed non-radioactive hollow plastic cylinder 210 .

[0050] image 3 and Figure 4 Plastic seeds 30 and 40 are shown, wherein radioactive source material 300 and 400 are located at the ends of cylindrical ca...

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PUM

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Abstract

An implantable source (40) of therapeutic radiation for brachytherapy is provided as a sealed, biocompatible capsule (410) of plastic (e.g. polyethylene or PEEK) transparent to the radiation. The capsule contains a radiation source (400) comprising particles of a radioactive isotope (e.g. Pd<103>, I<125>, Cs<131>) in a fluid carrier that is resistant to radiation polymerization but solidifies at elevated temperature. It also has a marker (420), and desirably has a socket (430) which accommodates attaching spacers (660) and makes possible linear strands and planar arrays of the capsules. The spacers may be functional, e.g. heat-generating or medication-releasing.

Description

technical field [0001] The present invention relates to medical devices and their manufacture and use, in particular radiation sources for the treatment of tumors, ie brachytherapy sources. Background technique [0002] Technological advances in plastic materials and fabrication methods have enabled advanced designs of brachytherapy sources, especially those that emit brachytherapy such as beta particles or low-energy x-rays. These types of sources can be used to treat various types of cancer, such as tumors of the prostate, head and neck, lung, liver, breast, and others. In particular, they can be implanted in tumors or tumor-invading volumes of tissues. There are two types of implants, permanent and temporary. As the category implies, temporary implants are associated with devices used to remove the source body hours or days after radiation therapy. Instead, permanent implants are placed in the body and stay with the patient for life. It may be because the permanently ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N5/00A61NA61N5/10
CPCA61N5/1027A61N2005/1024A61N2005/1023
Inventor 小约翰·L·罗素小约翰·L·卡登罗伊·柯林利翁多米尼克·莫雅
Owner INT BRACHYTHERAPY CORP
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