Title:
【発明の名称】近接照射療法器具用放射性材料の液体ジェット被着法
Document Type and Number:
Japanese Patent JP2002517006
Kind Code:
A
Abstract:
A method and apparatus for precisely applying radioactive material to a substrate such as a brachytherapy device is disclosed. A radioactive fluid adapted to cure rapidly is deposited as discrete dots onto a surface with a fluid-jet printhead. The apparatus comprises a fluid-jet printhead in communication with a chamber containing radioactive fluid to be applied by the printhead. The printhead is microprocessor driven, and the microprocessor may be provided with feedback from a station where the radioactivity deposited on a preceding substrate in a batch is measured, permitting the system to be recalibrated on an ongoing basis as the batch of printed devices is produced. Compensation for attenuation of radiation by a casing may also be made part of the feedback technique. Also disclosed is a brachytherapy device having printed on a surface dots of radiation-emitting material, in a pattern comprising various bands, dots or areas. Fluids suitable for printing by a fluid-jet printhead comprise a binder such as an acrylic resin or silicate, and a radioactive salt, compound or complex, dissolved in a radiation resistant solvent. Alternative fluids comprise radioactive salts, compounds, or complexes adsorbed onto a microparticulate carrier, or elemental microparticles, dispersed in a rapidly curable radiation-resistant fluid medium.
Inventors:
Calden, John, Elle.
Russell, John, Elle, Jr.
Fox, james, edward
Hud, Alan, Lionel
Willis, Mitchell
Russell, John, Elle, Jr.
Fox, james, edward
Hud, Alan, Lionel
Willis, Mitchell
Application Number:
JP2000551397A
Publication Date:
June 11, 2002
Filing Date:
May 04, 1999
Export Citation:
Assignee:
International Blackie Therapy S.A.
International Classes:
A61M36/12; A61N5/10; G21G4/08; G21K5/02; (IPC1-7): G21G4/08; A61N5/10; G21K5/02
Attorney, Agent or Firm:
Yoshiyuki Osuge