Patents by Inventor Peter Krulevich

Peter Krulevich has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Opto-acoustic transducer for medical applications
    Patent number: 6379325
    Abstract: This invention is an optically activated transducer for generating acoustic vibrations in a biological medium. The transducer is located at the end of a fiber optic which may be located within a catheter. Energy for operating the transducer is provided optically by laser light transmitted through the fiber optic to the transducer. Pulsed laser light is absorbed in the working fluid of the transducer to generate a thermal pressure and consequent adiabatic expansion of the transducer head such that it does work against the ambient medium. The transducer returns to its original state by a process of thermal cooling. The motion of the transducer within the ambient medium couples acoustic energy into the medium. By pulsing the laser at a high repetition rate (which may vary from CW to 100 kHz) an ultrasonic radiation field can be established locally in the medium.
    Type: Grant
    Filed: July 9, 1999
    Date of Patent: April 30, 2002
    Assignee: The Regents of the University of California
    Inventors: William Benett, Peter Celliers, Luiz Da Silva, Michael Glinsky, Richard London, Duncan Maitland, Dennis Matthews, Peter Krulevich, Abraham Lee
  • Opto-acoustic transducer for medical applications
    Patent number: 5944687
    Abstract: This invention is an optically activated transducer for generating acoustic vibrations in a biological medium. The transducer is located at the end of a fiber optic which may be located within a catheter. Energy for operating the transducer is provided optically by laser light transmitted through the fiber optic to the transducer. Pulsed laser light is absorbed in the working fluid of the transducer to generate a thermal pressure and consequent adiabatic expansion of the transducer head such that it does work against the ambient medium. The transducer returns to its original state by a process of thermal cooling. The motion of the transducer within the ambient medium couples acoustic energy into the medium. By pulsing the laser at a high repetition rate (which may vary from CW to 100 kHz) an ultrasonic radiation field can be established locally in the medium.
    Type: Grant
    Filed: April 24, 1996
    Date of Patent: August 31, 1999
    Assignee: The Regents of the University of California
    Inventors: William Benett, Peter Celliers, Luiz Da Silva, Michael Glinsky, Richard London, Duncan Maitland, Dennis Matthews, Peter Krulevich, Abraham Lee