Patents by Inventor David Ian Ruddenklau

David Ian Ruddenklau 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).

  • Medical device
    Patent number: 11090103
    Abstract: A medical device is described having a handle and an end effector coupled to the handle. The end effector has at least one electrode for providing electrical signals to a tissue or vessel to be treated. An RF drive circuit is provided for generating an RF drive signal that is applied to the end effector electrode. The RF drive circuit includes a resonant circuit and a frequency controller is used to vary the frequency of a signal passed through the resonant circuit in order to control the power supplied to the end effector electrode.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: August 17, 2021
    Assignee: Cilag GmbH International
    Inventors: David Ian Ruddenklau, Paul Christopher Roberts, Alan Edward Green
  • MEDICAL DEVICE
    Publication number: 20170367751
    Abstract: A medical device is described having a handle and an end effector coupled to the handle. The end effector has at least one electrode for providing electrical signals to a tissue or vessel to be treated. An RF drive circuit is provided for generating an RF drive signal that is applied to the end effector electrode. The RF drive circuit includes a resonant circuit and a frequency controller is used to vary the frequency of a signal passed through the resonant circuit in order to control the power supplied to the end effector electrode.
    Type: Application
    Filed: June 8, 2017
    Publication date: December 28, 2017
    Inventors: David Ian Ruddenklau, Paul Christopher Roberts, Alan Edward Green
  • Medical device
    Patent number: 9707027
    Abstract: A medical device is described having a handle and an end effector coupled to the handle. The end effector has at least one electrode for providing electrical signals to a tissue or vessel to be treated. An RF drive circuit is provided for generating an RF drive signal that is applied to the end effector electrode. The RF drive circuit includes a resonant circuit and a frequency controller is used to vary the frequency of a signal passed through the resonant circuit in order to control the power supplied to the end effector electrode.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: July 18, 2017
    Assignee: Ethicon Endo-Surgery, LLC
    Inventors: David Ian Ruddenklau, Paul Christopher Roberts, Alan Edward Green
  • MEDICAL DEVICE
    Publication number: 20130345689
    Abstract: A medical device is described having a handle and an end effector coupled to the handle. The end effector has at least one electrode for providing electrical signals to a tissue or vessel to be treated. An RF drive circuit is provided for generating an RF drive signal that is applied to the end effector electrode. The RF drive circuit includes a resonant circuit and a frequency controller is used to vary the frequency of a signal passed through the resonant circuit in order to control the power supplied to the end effector electrode.
    Type: Application
    Filed: May 20, 2011
    Publication date: December 26, 2013
    Inventors: David Ian Ruddenklau, Paul Christopher Roberts, Alan Edward Green