A SELF-EXPANDABLE MEDICAL DEVICE FOR ADVANCEMENT THROUGH VASCULATURE TO AN EXPANSION SITE IN A BLOOD VESSEL

A self-expandable medical device for advancement through vasculature to an expansion site in a blood vessel is disclosed. The device comprises a working portion and a connection portion that can be connected to a pusher. The working portion provides an outward radial force at every diameter between and including the diameter of a compressed and an expanded configurations, and comprises a plurality of crowns of cells comprising an open area bordered by two proximal cell struts, two distal cell struts, and two middle cell struts. The proximal cell struts each extend distally from a common proximal end to a proximal end of a respective one of the two middle cell struts. The distal cell struts each extend proximally from a common distal end to a distal end of a respective one of the two middle cell struts. Each middle cell strut is more flexible than the distal cell strut and proximal cell strut to which it extends.