Patent ID: 8585759

Claim:
A device, comprising: a plurality of ringlets connected together to form a continuous ring, each ringlet disposed about a longitudinal axis and comprising: a first element extending from a first end thereof through a central portion thereof to a second end thereof, where the first and second ends of the first element are disposed at radially outer positions with respect to the ring than the central portion of the first element, and where the central portion of the first element is longitudinally displaced from the first and second ends of the first element, and a second element extending from a first end thereof through a central portion thereof to a second end thereof, where the first and second ends of the second element are disposed at radially outer positions with respect to the ring than the central portion of the second element, and where the central portion of the second element is longitudinally displaced from the first and second ends of the second element, wherein the first and second elements are separated and spaced apart from each other at the central portions thereof and are joined together at the first ends thereof and the second ends thereof, wherein the plurality of ringlets are connected together such that the first ends of the elements of one ringlet are connected to the second ends of the elements of an adjacent ringlet.