Stent having helical elements

Introduced composed of multiple spiral fragments of the expansion bracket. By a groove; the bracket is a cylinder connected with the shape, comprising a shaft, and comprises at least two first group and second group of spiral bonding. The spiral connected in a first group basically of parallel; a first space, forming a first angle of to the shaft. The spiral connected the second group on the whole further of parallel, and formed is different from the second space of the first space, from the is opposite to the shaft to form the second angle of the. The other by groove; the bracket comprises a group of spiral connected and multiple top surface body, the top surface body are connected spiral ring, forming a ring ring-type elements; these elements are through to each other by the bracket main body. The bracket capable further comprises two ends of the.