Title:
【発明の名称】膨張源をもつ放射線療法用カテーテル
Document Type and Number:
Japanese Patent JP2002516733
Kind Code:
A
Abstract:
A radiation delivery system having an expandable radiation source made of a pliable material. The source body is made of a material such as a foam or sponge, or a fibrous material such as the soft bristles of a pipe cleaner. The spongy or fibrous material is made radioactive by the implantation of a radioactive isotope. The radioactive isotope can be located throughout the pliable source material, or concentrated in a desired region, such as the surface or near-surface region. This compressible radioactive source material, when constrained by a constraining housing or a catheter, has a very low profile. However, when the constraining housing or catheter is withdrawn, the expandable source material expands and fills the surrounding space, such as a blood vessel lumen. In this way, the radioactivity, impregnated in the expandable source material, is brought into direct contact with the vessel wall.
Inventors:
Thai Earth Tine Paul S
Application Number:
JP2000551850A
Publication Date:
June 11, 2002
Filing Date:
June 02, 1999
Export Citation:
Assignee:
Thai Earth Tine Paul S
International Classes:
A61M36/04; A61N5/10; (IPC1-7): A61N5/10
Attorney, Agent or Firm:
Minoru Nakamura (9 outside)