Self-expanding medical device for advancing through vasculature to expanded site in blood vessel

A self-expanding medical device for advancing through vasculature to an expansion site in a blood vessel is disclosed. The apparatus includes a working portion and a connecting portion that can be connected to a pusher. The working portion provides an outward radial force between, and at each of, the diameter of the compressed configuration and the diameter of the expanded configuration, and includes a plurality of crowns of the unit, the unit includes an open region defined by two proximal unit struts, two distal unit struts, and two intermediate unit struts. Each proximal unit strut extends distally from a common proximal end to a proximal end of a respective one of the two intermediate unit struts. Each distal unit strut extends proximally from a common distal end to a distal end of a respective one of the two intermediate unit struts. Each intermediate unit strut is more flexible than the distal and proximal unit struts to which it extends. 本申请公开了一种用于通过脉管系统推进至血管中的扩张部位的自扩张医疗设备。该设备包括工作部分和可以连接到推动器的连接部分。工作部分在