Patents by Inventor John Sigmon

John Sigmon 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).

  • Endoscopic ultrasound ablation needle
    Patent number: 9144459
    Abstract: A radiofrequency tissue ablation device includes an elongate outer cannula having proximal and distal ends and an intermediate length therebetween where a longitudinal region of the intermediate length is configured as an ablation electrode. A cannula lumen extends longitudinally through the cannula. A stylet extends slidably through the lumen and is secured to the cannula between the ablation electrode and the cannula distal end. The ablation electrode includes a plurality of substantially parallel helical apertures disposed around and extending through a cannula circumference.
    Type: Grant
    Filed: July 19, 2012
    Date of Patent: September 29, 2015
    Assignee: Cook Medical Technologies LLC
    Inventors: Vihar Surti, John Sigmon
  • Endoscopic Ultrasound Ablation Needle
    Publication number: 20140025054
    Abstract: A radiofrequency tissue ablation device includes an elongate outer cannula having proximal and distal ends and an intermediate length therebetween where a longitudinal region of the intermediate length is configured as an ablation electrode. A cannula lumen extends longitudinally through the cannula. A stylet extends slidably through the lumen and is secured to the cannula between the ablation electrode and the cannula distal end. The ablation electrode includes a plurality of substantially parallel helical apertures disposed around and extending through a cannula circumference.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 23, 2014
    Inventors: Vihar Surti, John Sigmon