Methods for manufacturing ultrasonic waveguides having improved velocity gain are disclosed. Additionally, methods for manufacturing ultrasonic medical devices including the ultrasonic waveguides are disclosed. Specifically, the ultrasonic waveguides comprises a first material having a higher acoustic...http://www.google.es/patents/US20070130771?utm_source=gb-gplus-sharePatente US20070130771 - Methods for producing ultrasonic waveguides having improved amplification
Methods for producing ultrasonic waveguides having improved amplification
