Patent ID: 8545533

Claim:
An actuatable guidewire stop configured to limit movement of an intravascular device relative to a bare guidewire, comprising: a coil spring having an inner lumen with a first diameter when the coil spring is restrained in an unlocked configuration relative to the guidewire, the coil spring being configured to slideably and rotationally receive the guidewire in the unlocked configuration, the inner lumen having a second diameter when the coil spring is unrestrained, the coil spring being configured to frictionally engage the guidewire in a locked configuration while unrestrained, the second diameter being smaller than the first diameter, the coil spring including turns having at least one protrusion disposed on a turn of the coil spring and adapted for engagement with a corresponding recess disposed on an adjacent turn of the coil spring, the at least one protrusion interlocking with the corresponding recess to restrain the coil spring in the unlocked configuration, and a disengagement member operable to disengage the at least one protrusion from the corresponding recess, the coil spring being adapted to transition into the locked configuration by disengaging the at least one protrusion from the corresponding recess.