Patent ID: 8808345

Claim:
A handle assembly, comprising: a housing; a rotator coupled to a proximal region of an elongated flexible shaft extending rotatably along an axis and having a deflectable distal region configured for intravascular delivery to a blood vessel of a human patient, wherein the rotator is configured to rotate the entire elongated flexible shaft through the proximal region without rotating the housing; a rotational limiting element configured to prevent rotation of the elongated flexible shaft and the rotator beyond a predetermined number of rotations; and an actuator coupled to a carrier, which in turn is coupled to a control wire extending within a lumen of the elongated flexible shaft to the deflectable distal region such that the actuator is operatively connected to the deflectable distal region of the elongated flexible shaft; wherein the actuator is configured to rotate relative to the housing, and wherein the carrier is coupled to the actuator in a manner that converts rotation of the actuator into translation of the carrier, and the actuator is further configured to proximally translate the carrier relative to the housing to apply tension to the control wire and thereby deflect the deflectable distal region of the elongated flexible shaft.