Patent ID: 8936634
Filing Date: 2015-01-20
Classification: A61F,A61L,A61M

Abstract:
1. A tubular structure having a longitudinal axis comprising a first element oriented at a first angle of θ and a separate second element oriented at a second angle of γ, wherein: a. θ does not equal γ; b. θ and γ are formed at an angle of between about +/−90 degrees relative to the axis of the tubular structure; and c. wherein when a first length section of the tubular structure is displaced rotationally relative to a second length section of the tubular structure, both θ and γ change relative to the longitudinal axis and produce a change in diameter of at least a portion of the tubular structure, and wherein said tubular structure has a pre-expansion length that is the same as a post-expansion length.