Abstract: An exemplary embodiment provides a hand-held apparatus for treatment of conditions requiring ultra-sonic or vibratory treatment. The apparatus includes a transducer, an electronic tuning circuit and a power source for powering the apparatus. The transducer has a first section axially aligned with the second section. The second section has an outer wall of predetermined thickness surrounding an annular cavity that contains a piezoelectric stack. The electronic tuning circuit is in communication with the piezoelectric stack. The circuit is configured to tune the transducer to a target output frequency. The transducer, electronic tuning circuit and power source are at least partially contained within a common housing that is configured to be grasped by a human hand to administer treatment.

Abstract: An exemplary embodiment provides a hand-held apparatus for treatment of conditions requiring ultra-sonic or vibratory treatment. The apparatus includes a transducer, an electronic tuning circuit and a power source for powering the apparatus. The transducer has a first section axially aligned with the second section. The second section has an outer wall of predetermined thickness surrounding an annular cavity that contains a piezoelectric stack. The electronic tuning circuit is in communication with the piezoelectric stack. The circuit is configured to tune the transducer to a target output frequency. The transducer, electronic tuning circuit and power source are at least partially contained within a common housing that is configured to be grasped by a human hand to administer treatment.