Patents by Inventor Andrew C. Tung

Andrew C. Tung 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).

  • BIOLOGICALLY DEGRADABLE COMPOSITIONS FOR MEDICAL APPLICATIONS
    Publication number: 20140370073
    Abstract: A medical article is disclosed, comprising a biologically degradable AB block copolymer and a biologically degradable polymer that is capable, at equilibrium and at room temperature, of absorbing less than about 5 mass % water.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: Yiwen Tang, Syed F.A. Hossainy, Andrew C. Tung, Stephen D. Pacetti
  • Biologically degradable compositions for medical applications
    Patent number: 8846070
    Abstract: A medical article is disclosed, comprising a biologically degradable AB block copolymer and a biologically degradable polymer that is capable, at equilibrium and at room temperature, of absorbing less than about 5 mass % water.
    Type: Grant
    Filed: July 29, 2008
    Date of Patent: September 30, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Yiwen Tang, Syed F. A. Hossainy, Andrew C. Tung, Stephen D. Pacetti
  • Methods for fabricating coatings for drug delivery devices having gradient of hydration
    Patent number: 8277926
    Abstract: A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a lower degree of hydration than the first polymer.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: October 2, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Coatings for drug delivery devices having gradient of hydration
    Patent number: 8231962
    Abstract: A coating for an implantable medical device is provided comprising a first layer including a first polymer and a second layer including a second polymer. The second layer is disposed over at least a portion of the first layer. The second polymer has a lower degree of hydration than the first polymer.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: July 31, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Methods for fabricating coatings for drug delivery devices having gradient of hydration
    Patent number: 8052988
    Abstract: A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a higher degree of hydration than the first polymer. The first or second polymer can comprise a polyorthoester.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: November 8, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Methods for fabricating a coating for implantable medical devices
    Patent number: 7563483
    Abstract: Methods for fabricating coatings for implantable medical devices are disclosed. The coatings include hydrophilic and hydrophobic components. The methods provide for treatment of the coatings to cause enrichment a region close to, at or on the outer surface of the coating with the hydrophilic component.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: July 21, 2009
    Assignee: Advanced Cardiovascular Systems Inc.
    Inventors: Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Stephen D. Pacetti
  • Methods For Fabricating Coatings For Drug Delivery Devices Having Gradient Of Hydration
    Publication number: 20080138498
    Abstract: A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a lower degree of hydration than the first polymer.
    Type: Application
    Filed: January 18, 2008
    Publication date: June 12, 2008
    Inventors: Stephen D. Pacetti, Syed F.A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Methods For Fabricating Coatings For Drug Delivery Devices Having Gradient Of Hydration
    Publication number: 20080138497
    Abstract: A method for fabricating a coating for an implantable medical device is provided comprising applying a first polymer on at least a portion of the device to form a first layer of the coating and applying a second polymer on at least a portion of the first layer to form a second layer of the coating. The second polymer has a higher degree of hydration than the first polymer. The first or second polymer can comprise a polyorthoester.
    Type: Application
    Filed: January 18, 2008
    Publication date: June 12, 2008
    Inventors: Stephen D. Pacetti, Syed F.A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Coatings for drug delivery devices having gradient of hydration and methods for fabricating thereof
    Patent number: 7329413
    Abstract: Coatings for implantable medical devices, and methods for fabricating thereof, are provided. The coatings include a first polymer layer and a second polymer layer, where the second polymer has a higher degree of hydration than the first polymer.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: February 12, 2008
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Thierry Glauser
  • Coating for implantable medical devices
    Patent number: 7247364
    Abstract: An implantable medical device, such as a stent, is disclosed having a coating. The coating includes a poly(butylene terephthalate-co-ethylene glycol)polymer. The coating can also include a drug.
    Type: Grant
    Filed: February 25, 2005
    Date of Patent: July 24, 2007
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Stephen D. Pacetti
  • Stent coating
    Patent number: 7063884
    Abstract: A stent comprising a coating layer is disclosed. The coating layer has a hydrophobic component and a hydrophilic component, wherein a region of the coating layer on or about the outermost surface of the coating layer has a higher content or concentration of the hydrophilic component than the hydrophobic component.
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: June 20, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Stephen D. Pacetti
  • Method for fabricating a coating for a medical device
    Patent number: 6926919
    Abstract: Methods for fabricating coatings for implantable medical devices are disclosed. The coatings include blends of hydrophilic and hydrophobic polymers. The methods provide for treatment of the coatings to cause enrichment a region close to the outer surface of the coating with the hydrophilic polymers.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: August 9, 2005
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Yiwen Tang, Andrew C. Tung, Stephen D. Pacetti