Patents by Inventor Gordon S. Stewart

Gordon S. Stewart 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 devices for eluting agents to a vessel
    Patent number: 9636486
    Abstract: Systems, devices and methods for eluting an agent at a treatment site are disclosed. The devices include an expandable frame and at least one membrane. The membrane may carry an agent to elute at the treatment site. The membrane may allow blood flow at the treatment site during agent delivery.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 2, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Paul M. Consigny, William E. Webler, Gustavo D. Cipolla, Gordon S. Stewart, Benjamyn Serna, Daniel L. Cox
  • Methods and Devices for Eluting Agents to a Vessel
    Publication number: 20160074635
    Abstract: Systems, devices and methods for eluting an agent at a treatment site are disclosed. The devices include an expandable frame and at least one membrane. The membrane may carry an agent to elute at the treatment site. The membrane may allow blood flow at the treatment site during agent delivery.
    Type: Application
    Filed: November 25, 2015
    Publication date: March 17, 2016
    Inventors: Paul M. Consigny, William E. Webler, Gustavo D. Cipolla, Gordon S. Stewart, Benjamyn Serna, Daniel L. Cox
  • Freeze-thaw method for modifying stent coating
    Patent number: 8715707
    Abstract: Methods are disclosed for controlling the morphology and the release-rate of active agent from a coating layer for medical devices comprising a polymer matrix and one or more active agents. The methods comprise exposing a wet or dry coating to a freeze-thaw cycle. The coating layer can be used for controlled delivery of an active agent or a combination of active agents.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: May 6, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Gordon S. Stewart, Benjamyn Serna, Lothar W. Kleiner
  • Methods of application of coatings composed of hydrophobic, high glass transition polymers with tunable drug release rates
    Patent number: 8562669
    Abstract: The present invention relates to methods of applying a drug—polymer coating layer onto an implantable medical device or another substrate, and the use of a choice of solvents to adjust the release of the drug from the coating. The drug to polymer ratio is about 1:1 to 1:3 on a mass basis. The polymer and the drug are hydrophobic.
    Type: Grant
    Filed: June 26, 2008
    Date of Patent: October 22, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Stephen D. Pacetti, Gordon S. Stewart, Victoria M. Gong, Chandana Bellam, Lisa M. Weldon
  • Methods Of Application Of Coatings Composed Of Hydrophobic, High Glass Transition Polymers With Tunable Drug Release Rates
    Publication number: 20090326645
    Abstract: The present invention relates to methods of applying a drug—polymer coating layer onto an implantable medical device or another substrate, and the use of a choice of solvents to adjust the release of the drug from the coating. The drug to polymer ratio is about 1:1 to 1:3 on a mass basis. The polymer and the drug are hydrophobic.
    Type: Application
    Filed: June 26, 2008
    Publication date: December 31, 2009
    Inventors: Stephen D. Pacetti, Gordon S. Stewart, Victoria M. Gong, Chandana Bellam, Lisa M. Weldon