Patents by Inventor Kari L. Riegner

Kari L. Riegner 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).

  • System and method for tissue sealing
    Patent number: 8685016
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: April 1, 2014
    Assignee: Covidien AG
    Inventors: Roberth H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper
  • System and method for tissue sealing
    Patent number: 8216223
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: July 10, 2012
    Assignee: Covidien AG
    Inventors: Roberth H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper
  • System and method for tissue sealing
    Patent number: 8147485
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: April 3, 2012
    Assignee: Covidien AG
    Inventors: Roberth H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper
  • System and Method for Tissue Sealing
    Publication number: 20090157071
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Application
    Filed: February 23, 2009
    Publication date: June 18, 2009
    Inventors: Robert H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper
  • System and Method for Tissue Sealing
    Publication number: 20090157072
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Application
    Filed: February 23, 2009
    Publication date: June 18, 2009
    Inventors: Robert H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper
  • System and Method for Tissue Sealing
    Publication number: 20090157075
    Abstract: An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a processor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue. A tissue cooling period is provided to enhance operative outcomes.
    Type: Application
    Filed: February 23, 2009
    Publication date: June 18, 2009
    Inventors: Robert H. Wham, Rebecca Coulson, Kari L. Riegner, David A. Schechter, Nicole McKenna, Barbara R. Bastian, Jennifer S. Harper