Medical noninvasive operations using focused modulated high power ultrasound
Patent 5827204 Issued on October 27, 1998. Estimated Expiration Date: 
May 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 27, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesThromboses formation by means of shock waves Ultrasonic treatment of pathological tissue Patent #: 5209221 InventorsApplicationNo. 863162 filed on 05/27/1997US Classes:601/2, Ultrasonic600/427, Combined with therapeutic or diagnostic device600/439, With therapeutic device601/4Contact-free comminution of concretionExaminersPrimary: Smith, Ruth S.Attorney, Agent or FirmInternational ClassA61N 007/00AbstractMedical noninvasive operations using focused modulated high power ultrasound in accordance with the present invention generally includes a transmitter for exciting a multifrequency ultrasound wave for causing vaporous cavitation bubbles in a small focal zone of a medical target region. Focused ultrasound can be used for both dissolving tissues as well as causing clots in order to destroy cancerous growths. The multifrequency wave includes an underlying low frequency signal for enabling optimal growth of microbubbles and at least one high frequency signal for enabling a narrow zone of focus of the ultrasound. A cavitation monitor may be provided for sensing a level of cavitation as well as providing feedback to the transmitter. In addition, an imaging system is provided for enabling viewing of the medical target area during the therapy. | |
