The present invention provides a system and method to non-invasively deliver a therapeutic amount of energy to a treatment site to fragment particulate material. More specifically, an external power source is provided for transmitting energy non-invasively through the skin and body of a patient to a medical implant. The medical implant, including an energy focusing device, is surgically positioned at the treatment site. The energy focusing device is configured to receive the transmitted energy and directing therapeutic energy to the treatment site to fragment particulate material.