Patent ID: 8114144
Filing Date: 2012-02-14
Classification: A61F,A61M

Abstract:
1. A delivery system for delivery of a medical device, the delivery system comprising: an inner member having a proximal section, a distal section and a longitudinal axis therebetween, the inner member including a first layer and a second layer, the first layer and the second layer being attached together at a first segment and a second segment, the second segment being spaced from the first segment along a length of the inner member, the first layer and the second layer being free of attachment between the first segment and the second segment; the inner member further comprising at least two wires disposed along the length of the inner member between the first layer and the second layer, wherein the at least two wires include a first coil wound about the longitudinal axis in a first direction and a second coil wound about the longitudinal axis in an opposite direction, the first coil having a first diameter and the second coil having a second diameter, wherein at least one of the first diameter and the second diameter changes when a torque is applied; and an outer member disposed about the inner member.