Patents by Inventor Andrew Lerohl

Andrew Lerohl 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).

  • Methods and apparatus employing ionizing radiation for treatment of cardiac arrhythmia
    Publication number: 20070173812
    Abstract: Method and apparatus are disclosed employing ionizing radiation for forming lines of ablation or lesions in cardiac tissue to treat atrial fibrillation or other electrophysiological problems with the heart. The apparatus may include a catheter in which the radiation source is advanced hydraulically after the catheter is in place within the heart. Various fixation devices are also disclosed for fixing the location of the catheter within the heart.
    Type: Application
    Filed: February 22, 2007
    Publication date: July 26, 2007
    Inventors: Raoul Bonan, Charles Larsen, Roelof Trip, Douglas Schumer, Jack Griffis, Andrew Lerohl
  • Low profile perfusion-type dilatation catheter
    Patent number: 5279562
    Abstract: A balloon dilatation catheter which has a coiled supporting element disposed within a guidewire receiving inner lumen extending within the interior of the balloon. Substantially lower profiles can be obtained with catheters of this type, particularly with perfusion-type dilatation catheters with little chance that the inner member will collapse when the balloon is inflated to high pressures. Additionally, the coiled supporting element provides much smoother transitions at the ends of the balloon and thereby improves the trackability of the catheter over a guidewire.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: January 18, 1994
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Motasim M. Sirhan, Andrew Lerohl, Jovito L. Fernando