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公开(公告)号:US06338709B1
公开(公告)日:2002-01-15
申请号:US09026103
申请日:1998-02-19
IPC分类号: A61N500
CPC分类号: A61N5/1002 , A61N2005/1003 , A61N2005/1005 , A61N2005/1021
摘要: A radiation delivering catheter is positioned away from the walls of the vessel to be treated, e.g. at a stenosis site, so that the radiation flux impacting the walls is more uniform. In one embodiment, one or more balloons are used, and in another, one or more expandable structures. In other embodiments, a radiation source residing within a balloon is shielded from the vessel walls when the balloon is not inflated, but exposes the vessel walls to radiation when the balloon is inflated.
摘要翻译: 辐射输送导管被定位成远离待治疗的血管的壁,例如, 在狭窄处,使得影响壁的辐射通量更均匀。 在一个实施例中,使用一个或多个气囊,而在另一个实施例中,一个或多个可膨胀结构。 在其他实施例中,当球囊未膨胀时,驻留在球囊内的辐射源与血管壁屏蔽,但当气囊膨胀时,将血管壁暴露于辐射。