Patents by Inventor Mark T. Buchanan

Mark T. Buchanan 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).

  • Transmyocardial revascularization using ultrasound
    Patent number: 6511444
    Abstract: A method and apparatus for performing transmyocardial revascularization using ultrasound is disclosed. The apparatus includes a phased array ultrasonic device that includes a plurality of ultrasonic transducer elements which are controlled using a feedback control system so that each ultrasonic transducer element produces an ultrasonic wave of particular power and phase in order to achieve constructive interference at a desired acoustic focus. The constructive interference creates high pressure amplitudes for vaporizing the target tissue at the focus. A method is provided for vaporizing target tissue for which a plurality of ultrasonic transducers are focused so as to provide constructive interference within the target tissue. The ultrasonic beams are launched and produce a rapid rise in tissue temperature that will vaporize the target tissue within the focal zone.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: January 28, 2003
    Assignee: Brigham and Women's Hospital
    Inventors: Kullervo Hynynen, Douglas R. Daum, Mark T. Buchanan, Todd Fjield
  • TRANSMYOCARDIAL REVASCULARIZATION USING ULTRASOUND
    Publication number: 20020151777
    Abstract: A method and apparatus for performing transmyocardial revascularization using ultrasound is disclosed. The apparatus includes a phased array ultrasonic device that includes a plurality of ultrasonic transducer elements which are controlled using a feedback control system so that each ultrasonic transducer element produces an ultrasonic wave of particular power and phase in order to achieve constructive interference at a desired acoustic focus. The constructive interference creates high pressure amplitudes for vaporizing the target tissue at the focus. A method is provided for vaporizing target tissue for which a plurality of ultrasonic transducers are focused so as to provide constructive interference within the target tissue. The ultrasonic beams are launched and produce a rapid rise in tissue temperature that will vaporize the target tissue within the focal zone.
    Type: Application
    Filed: January 31, 2000
    Publication date: October 17, 2002
    Inventors: Kullervo Hynynen, Douglas R. Daum, Mark T. Buchanan, Todd Fjield