Patents by Inventor David Dumbauld

David Dumbauld 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).

  • Surgical testing instrument and system
    Patent number: 7804308
    Abstract: The present disclosure describes an instrument for measuring the dielectric properties of biological tissue. The instrument includes a top electrode assembly and a bottom electrode assembly, the top electrode assembly including a top electrode and at least one shaft adjustably positionable to move the top electrode relative to the bottom electrode assembly, the bottom electrode assembly including a bottom test plate and a bottom electrode. The instrument also includes a testing cylinder coupled to the shaft and having an inner cavity defined therein that houses the top electrode and which is designed to enclose the bottom electrode therein. The testing cylinder is configured to reduce at least one of electric current, magnetic current, stray radiative RF fields and external capacitive leakage currents during activation of the top and bottom electrodes.
    Type: Grant
    Filed: October 17, 2008
    Date of Patent: September 28, 2010
    Assignee: Covidien AG
    Inventors: Ronald J. Podhajsky, James H. Orszulak, Behzad Ghorbani-Elizeh, David Dumbauld
  • Surgical Testing Instrument and System
    Publication number: 20090039900
    Abstract: The present disclosure describes an instrument for measuring the dielectric properties of biological tissue. The instrument includes a top electrode assembly and a bottom electrode assembly, the top electrode assembly including a top electrode and at least one shaft adjustably positionable to move the top electrode relative to the bottom electrode assembly, the bottom electrode assembly including a bottom test plate and a bottom electrode. The instrument also includes a testing cylinder coupled to the shaft and having an inner cavity defined therein that houses the top electrode and which is designed to enclose the bottom electrode therein. The testing cylinder is configured to reduce at least one of electric current, magnetic current, stray radiative RF fields and external capacitive leakage currents during activation of the top and bottom electrodes.
    Type: Application
    Filed: October 17, 2008
    Publication date: February 12, 2009
    Inventors: Ronald J. Podhajsky, James H. Orszulak, Behzad Ghorbani Elizeh, David Dumbauld
  • Surgical testing instrument and system
    Patent number: 7443175
    Abstract: The present disclosure describes an instrument for measuring the dielectric properties of biological tissue. The instrument includes a top electrode assembly and a bottom electrode assembly, the top electrode assembly including a top electrode and at least one shaft adjustably positionable to move the top electrode relative to the bottom electrode assembly, the bottom electrode assembly including a bottom test plate and a bottom electrode. The instrument also includes a testing cylinder coupled to the shaft and having an inner cavity defined therein that houses the top electrode and which is designed to enclose the bottom electrode therein. The testing cylinder is configured to reduce at least one of electric current, magnetic current, stray radiative RF fields and external capacitive leakage currents during activation of the top and bottom electrodes.
    Type: Grant
    Filed: July 14, 2006
    Date of Patent: October 28, 2008
    Assignee: Covidien AG
    Inventors: Ronald J. Podhajsky, James H. Orszulak, Behzad Ghorbani-Elizeh, David Dumbauld
  • Surgical testing instrument and system
    Publication number: 20080030206
    Abstract: The present disclosure describes an instrument for measuring the dielectric properties of biological tissue. The instrument includes a top electrode assembly and a bottom electrode assembly, the top electrode assembly including a top electrode and at least one shaft adjustably positionable to move the top electrode relative to the bottom electrode assembly, the bottom electrode assembly including a bottom test plate and a bottom electrode. The instrument also includes a testing cylinder coupled to the shaft and having an inner cavity defined therein that houses the top electrode and which is designed to enclose the bottom electrode therein. The testing cylinder is configured to reduce at least one of electric current, magnetic current, stray radiative RF fields and external capacitive leakage currents during activation of the top and bottom electrodes.
    Type: Application
    Filed: July 14, 2006
    Publication date: February 7, 2008
    Inventors: Ronald J. Podhajsky, James H. Orszulak, Behzad Ghorbani-Elizeh, David Dumbauld