Ultrasound transducer for medical applications

An ultrasound transducer assembly, comprising:

• a housing;
• a wedge-shaped acoustic modal convertor (AMC) in the housing with a first surface exposed by an opening in the housing, and a second surface that meets the first surface at a tip located in the housing, and extends from the tip at an angle into the housing, wherein the second surface has a recessed portion formed therein, wherein the second surface of the AMC is oriented at a specific oblique angle to the first surface of the AMC;
• and
• a piezoelectric ultrasound transducer disposed in the recessed portion of the second surface of the AMC, wherein the piezoelectric ultrasound transducer is connected to an electrically tuned circuit that resonates at a specific frequency and has a finite bandwidth,
• wherein the piezoelectric ultrasound transducer includes a back surface that is electroded with a metal plating in a uniform or elliptical pattern, that protrudes from the recessed portion and that is loaded with a material that controls a forward scattering amplitude and absorption cross-section, and a front surface inside the recessed portion that is also electroded,
• wherein said front surface establishes a ground plane and includes a matching layer over the ground plane of one or more materials, and wherein a tuned piezoelectric ultrasound transducer transmits oblique acoustic waves of an electrical signal designed for bone fracture healing.