Patents by Inventor Julene Christophersen

Julene Christophersen 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).

  • Publication number: 20070142880
    Abstract: A light delivery apparatus to provide light treatment to a patient includes a catheter assembly having a light source that transmit light towards a target site within a patient. A balloon surrounds the light source and has a plurality of tissue engaging elements movable between first positions and second positions. In one embodiment, each element extends radially inward in the first position and radially outward in the second position. An insertion tool is used to deliver the light delivery apparatus. During use, the light delivery apparatus is rotationally locked with the insertion tool for improved steering, navigation, and aiming of emitted light.
    Type: Application
    Filed: November 7, 2006
    Publication date: June 21, 2007
    Inventors: William Barnard, Phillip Burwell, James Chen, Julene Christophersen, William Gembala, David Shine
  • Publication number: 20030167033
    Abstract: Systems and methods for performing photodynamic therapy wherein a photoreactive agent is delivered locally and activated with an external non-invasive energy source are provided. In one embodiment, a low energy light source is used to initiate fluorescence in target tissue containing photoreactive agent. The characteristic fluorescence of the abnormal target tissue is used to generate a map that is then used to direct targeted activation energy to the target tissue without collateral damage to healthy tissue.
    Type: Application
    Filed: January 23, 2003
    Publication date: September 4, 2003
    Inventors: James Chen, Julene Christophersen, Nick Yeo, Greg Heacock