Patent ID: RE42983

Claim:
A collapsible medical device comprising: a) a mandrel having a distal end and a stop spaced proximally of the distal end, a proximal length of the mandrel extending proximally of the stop and a distal length of the mandrel extending distally of the stop, wherein the proximal length of the mandrel has a proximal diameter and the distal length of the mandrel has a distal diameter and wherein the proximal and distal diameters are substantially equal; and b) a functional element comprising a radially expandable body having a proximal slider and a distal slider, the proximal slider being slidably carried along the proximal length of the mandrel and the distal slider being slidably carried along the distal length of the mandrel, the proximal and distal sliders being slidable along the mandrel independently of one another such that the distance between the proximal slider and distal slider can be varied to effect different configurations of the functional element.