Non-invasive therapeutic treatment of bone in vivo using ultrasound in conjunction with application of a biochemical compound or bone growth factor is performed by subjecting bone to an ultrasound signal supplied to an ultrasound transducer placed on the skin of a bony member, and involving a repetitive...http://www.google.com.hk/patents/US6231528?utm_source=gb-gplus-share專利 US6231528 - Ultrasonic and growth factor bone-therapy: apparatus and method
