Xenon-133 radioactive stent for preventing restenosis of blood vessels and a process for producing the same
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United States of America Patent
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Feb 20, 2001
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N/A
app pub date -
Feb 19, 1999
filing date -
Jun 5, 1998
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Abstract
Radioactive stents used in angioplasty on sclerotic coronary arteries without the risk of restenosis can be produced by ion injecting .sup.133 Xe into the surfaces of stents as a nuclide that has a shorter half-life and emits a smaller maximum energy of .beta.-rays than .sup.32 p Uniform ion injection is accomplished using an apparatus capable of uniform irradiation of the stents with .sup.133 Xe ion beams. The source of .sup.133 Xe is a nuclear fission product generated from .sup.235 U in the fuel rods in nuclear reactor.
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