Expandable device for radiation treatment

摘要

An expandable braid device attached to a guidewire acts to both house radiation and to expose a stenosis site to such radiation as a function of the braid's collapsed or deployed configuration. The expandable braid device, in a closed configuration, shields a radioactive inner core of the braid as it is advanced to and located at a stenosis site and, in an expanded configuration, exposes the radioactive inner core to the stenosis site in order to irradiate such site.