Phased array imaging and therapy intraluminal ultrasound device

An intraluminal ultrasound device, comprising:

• a flexible elongate member configured to be positioned within a body lumen of a patient, the flexible elongate member including a distal portion and a longitudinal axis, the flexible elongate member comprising a first tubular member and a second tubular member connected by a flexible joint;
• a first ultrasound transducer array disposed distally from the flexible joint, the first ultrasound array being circumferentially positioned around the longitudinal axis of the flexible elongate member, wherein the first ultrasound transducer array is configured to obtain ultrasound imaging data of the body lumen;
• and
• a second ultrasound transducer array disposed proximally from the flexible joint and adjacent a distal member of the distal portion of the flexible elongate member, the second ultrasound array being circumferentially positioned around the longitudinal axis of the flexible elongate member, wherein the second ultrasound transducer array is configured to apply an ultrasound therapy within the body lumen.