Patent ID: 8460221

Claim:
A hand-held apparatus for treatment of conditions requiring vibratory or sonic treatment, the apparatus comprising: a transducer, the transducer comprising: a first section, a second section axially aligned with the first section, the second section having an outer wall of predetermined thickness surrounding an annular cavity, the first section directly mechanically connected to the second section, without any intervening structure; a piezoelectric stack disposed within the cavity of the second section, the piezoelectric stack comprising one or more piezoelectric disks and one or more conductive disks in alternating sequence; an electronic tuning circuit in communication with the piezoelectric stack, the electronic tuning circuit configured to establish a target frequency of the transducer and to maintain the target frequency; and, a power source powering the electronic circuit; wherein the first section and second section of the transducer are connected to provide a predetermined compressive force to the piezoelectric stack and create a longitudinal deformation on the outer wall of the second section; and, wherein the transducer, electronic tuning circuit and power source are at least partially contained within a common housing, the housing configured to be grasped by a human hand to administer treatment.