Patents by Inventor David K. Norvell

David K. Norvell 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).

  • Patent number: 8034032
    Abstract: A seal assembly for use in conjunction with a trocar assembly includes a seal body adapted for movement for selectively opening and substantially completely closing the seal assembly. The seal assembly includes a longitudinal axis extending therethrough with a transverse plane substantially perpendicular thereto. The seal body includes a proximal end and a distal end, the proximal end making a first angle with respect to the transverse plane and the distal end making a second angle with respect to the transverse plane, wherein the first angle is less than the second angle.
    Type: Grant
    Filed: September 17, 2004
    Date of Patent: October 11, 2011
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Aaron C. Voegele, Michael S. Cropper, David K. Norvell
  • Publication number: 20110015631
    Abstract: In one general aspect, various embodiments are directed to a surgical instrument that can supply mechanical energy and electrical energy to an end effector of the surgical instrument. The surgical instrument may be operated in a first operating mode in which a transducer of the surgical instrument produces mechanical energy, or vibrations, that are transmitted to the end effector and a second operating mode in which electrical energy, or current, can flow through the end effector to perform electrosurgery. In another general aspect, the surgical instrument may comprise a clamp, or jaw, which can be moved into a closed position to hold tissue against a waveguide, or blade, of the end effector. In the second operating mode of the surgical instrument, current can flow from a power source, through the waveguide, and return to the power source through a path comprising the jaw.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Applicant: Ethicon Endo-Surgery, Inc.
    Inventors: Eitan T. Wiener, Shan Wan, Daniel W. Price, David K. Norvell, James R. Giordano
  • Publication number: 20110015660
    Abstract: In one general aspect, various embodiments are directed to an ultrasonic surgical instrument that comprises a handpiece housing that operably supports an electrical contact assembly therein that is in electrical communication with a signal source. An acoustic assembly is supported within the handpiece housing in rotatable contact with the electrical contact assembly. In various embodiments, the signal source produces at least one of an ultrasonic signal and a radio frequency signal.
    Type: Application
    Filed: July 15, 2009
    Publication date: January 20, 2011
    Applicant: Ethicon Endo-Surgery, Inc.
    Inventors: Eitan T. Wiener, Shan Wan, Daniel W. Price, David K. Norvell, James R. Giordano
  • Patent number: 7833199
    Abstract: A trocar comprising an alignment channel and an instrument seal comprising a bending portion and a base portion. The bending and base portions of the instrument seal are spaced relative the alignment channel such that when a surgical instrument is retracted the bending portion inverts and the lip does not enter the alignment channel.
    Type: Grant
    Filed: October 11, 2006
    Date of Patent: November 16, 2010
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Paul T. Franer, Thomas A. Gilker, Mark Tsonton, David K Norvell
  • Publication number: 20100081880
    Abstract: Various devices are provided for allowing multiple surgical instruments to be inserted through a single surgical access device at variable angles of insertion, allowing for ease of manipulation within a patient's body while maintaining insufflation. Safety shields and release mechanisms are also provided for use with various surgical access devices.
    Type: Application
    Filed: September 30, 2008
    Publication date: April 1, 2010
    Applicant: Ethicon Endo-Surgery, Inc.
    Inventors: Christopher W. Widenhouse, William Bruce Weisenburgh, II, Frederick E. Shelton, IV, David K. Norvell, Robert P. Gill, James Walden Voegele, Michael A. Murray, Christopher J. Hess, Michael S. Cropper
  • Publication number: 20080171987
    Abstract: A trocar comprising an alignment channel and an instrument seal comprising a bending portion and a base portion. The bending and base portions of the instrument seal are spaced relative the alignment channel such that when a surgical instrument is retracted the bending portion inverts and the lip does not enter the alignment channel.
    Type: Application
    Filed: October 11, 2006
    Publication date: July 17, 2008
    Inventors: Paul T. Franer, Thomas A. Gilker, Mark Tsonton, David K. Norvell
  • Patent number: D542918
    Type: Grant
    Filed: February 8, 2005
    Date of Patent: May 15, 2007
    Assignee: Ethicon Endo-Surgery, Inc.
    Inventors: Thomas E. Albrecht, David K. Norvell