Patent ID: 6960173

Claim:
A method for treating an external wound from a non-contact distance d, comprising the steps of: positioning an ultrasound transducer such that a distal radiation surface of the ultrasound transducer is positioned at a distance substantially equal to the non-contact distance d from the surface of the external wound; and creating and maintaining ultrasound standing waves between the surface of the external wound and the distal radiation surface, wherein the ultrasound standing waves are created and maintained in air along the non-contact distance d, wherein the non-contact distance d is determined by the formula: d=n ×λ/2, where λ is the wavelength of an ultrasound standing wave and n is a positive integer, and wherein the ultrasound standing waves create radiation pressure for providing a bactericidal and a therapeutic effect to the external wound for decreasing the healing time for the external wound.