Double-wall balloon catheter for treatment of proliferative tissue
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United States of America Patent
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Jun 22, 1999
Grant Date -
N/A
app pub date -
Jul 24, 1997
filing date -
Jul 24, 1997
priority date (Note) -
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Abstract
An instrument for use in brachytherapy comprises a concentric arrangement of inner and outer distensible, spherical chambers disposed near the proximal end of a catheter body where one of the chambers is made to contain a radioactive material with the other chamber containing a radiation absorptive material, the apparatus functioning to provide a more uniform absorbed dose profile in tissue surrounding a cavity created by the removal of a tumor. An alternative embodiment includes non-spherical inner and outer chambers whose respective walls are spaced equidistant over the entire surfaces thereof.
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