Laminated needle assemblies and methods of their manufacture and use are provided herein. Disclosed herein are laminated needle assemblies for delivering ultrasonic energy. The laminated needle assemblies can include a first elongate portion and a second elongate portion. The first elongate portion defines a first length and has an inner diameter, an outer diameter, a proximal end, and a distal end. The second elongate portion defines a second length, is coaxially aligned with the first elongate portion and has an inner diameter, an outer diameter, a proximal end, and a distal end.
