SYSTEM FOR TREATING BLOOD VESSELS

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The present disclosure is directed to a system for treating a blood vessel. The system may include a shaft assembly (202) including an orienting element (204). The system may also include a re-entry device (100) extending into the shaft lumen. The re-entry device may comprise a core wire (104) configured such that bending stresses created in the core wire during bending about a design bend radius are less than the elastic limit of the core wire so that the core wire will elastically recover from the bending upon release.