Patent References 3636943 High frequency ultrasonic process and apparatus for selectively dissolving and removing unwanted solid and semi-solid materials and the like Intravascular ultrasonic angioplasty probe Therapy and imaging probe and therapeutic treatment apparatus utilizing it Patent #: 5720287 InventorsAssigneeApplicationNo. 939289 filed on 09/29/1997US Classes:601/2, Ultrasonic606/128With fragmenting meansExaminersPrimary: Smith, Ruth S.Attorney, Agent or FirmInternational ClassA61N 007/00AbstractAn apparatus and method for the application of ultrasound to a location within the body is provided. The apparatus can advantageously operate at a pulse duration below about 100 milliseconds and in the range 0.1 milliseconds to 100 milliseconds and a pulse repetition period below about 1 second and in the range of 1 millisecond to 1 second. Duty ratios over 5 and preferably over 8 are also advantageous. Therapeutic applications of ultrasound such as for assisting in the treatment of medical conditions such as cancer and/or other ailments are also provided. | |