#$%^&*AU2018202092A120181018.pdf#####ABSTRACT Embodiments of the present invention include a medical apparatus that includes a probe having a distal end configured for insertion into a body cavity and containing a lumen that opens through the distal end, and an inflatable balloon deployable through the lumen into the body cavity, the balloon having an exterior wall. The medical apparatus also includes a flexible printed circuit board having a first side attached to the exterior wall of the inflatable balloon and a second side opposite the first side, and an ultrasonic transducer mounted on the first side of the flexible printed circuit board and encapsulated between the exterior wall of the balloon and the flexible printed circuit board.1/5 (0 (o I~tC) LO V) 0 L) aOf CN
