Patent ID: 8801774
Filing Date: 2014-08-12
Classification: A61F,A61M

Abstract:
1. A tubular structure having a longitudinal axis comprising a wrap of at least one tape at a first wrap angle of x, and a wrap of at least one tape at a second wrap angle of y, with both wraps being in the same relative direction; x and y both formed at an angle of about 0 to 90 degrees relative to the axis of the tubular structure; x being an angle different from y, and x and y oriented at an acute included angle with respect to each other; wherein when axial force is applied to the tubular structure, both x and y decreases relative to the longitudinal axis, and the acute included angle between x and y increases; and the tubular structure having a first diameter and a first axial length, wherein when the tubular structure is increased from the first axial length to an elongated second axial length, the first diameter increases to an enlarged second diameter.