Patents by Inventor Yiwen Tang

Yiwen Tang 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).

  • Polymer Blends For Drug Delivery Stent Matrix With Improved Thermal Stability
    Publication number: 20140335143
    Abstract: Various embodiments of the present invention generally relate to a polymer blend composition used for coating a medical device that exhibits improved thermal stability. The invention also encompasses implantable medical devices coated the aforementioned coating.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 13, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Florencia Lim, Bozena Z. Maslanka, Yiwen Tang, O. Mikael Trollsas
  • 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
  • Coatings for implantable devices comprising polymers of lactic acid and methods for fabricating the same
    Patent number: 8846069
    Abstract: Coatings for an implantable medical device and a method of fabricating thereof are disclosed, the coatings comprising polymers of lactic acid.
    Type: Grant
    Filed: April 19, 2010
    Date of Patent: September 30, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Syed F.A. Hossainy, Yiwen Tang, Eugene T. Michal, Thierry Glauser, Stephen D. Pacetti, Jessica DesNoyer
  • Copolymer comprising elastin pentapeptide block and hydrophilic block, and medical device and method of treating
    Patent number: 8778376
    Abstract: A copolymer comprising a block of an elastin pentapeptide and method of making and using the copolymer are provided.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: July 15, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Mikael Trollsas, Thierry Glauser, Yiwen Tang
  • Methods of forming coatings with a crystalline or partially crystalline drug for implantable medical devices
    Patent number: 8753709
    Abstract: Methods for making coatings on an implantable device, such as a drug-eluting stent. The coatings comprise a polymer and a drug in a crystalline or partially crystalline form. In addition, implantable devices produced by the methods and methods of using the coated implantable devices are described.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: June 17, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Syed Faiyaz Ahmed Hossainy, Yiwen Tang, Homayon Askaryar, Qing Lin, Thierry Glauser
  • Stent coatings comprising hydrophilic additives
    Patent number: 8673334
    Abstract: A coating for implantable medical devices and a method for fabricating thereof are disclosed. The coating includes a mixture of a hydrophobic polymer and a polymeric hydrophilic additive, wherein the hydrophobic polymer and the hydrophilic additive form a physically entangled or interpenetrating system.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: March 18, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Stephen D. Pacetti, Yiwen Tang
  • Coatings for implantable medical devices comprising hydrophilic substances and methods for fabricating the same
    Patent number: 8658194
    Abstract: A segmented polyurethane and an amphiphilic random or block copolymer are disclosed. The segmented polyurethane and the amphiphilic random or block copolymer can be used for fabricating a coating for an implantable medical device such as a stent.
    Type: Grant
    Filed: October 21, 2010
    Date of Patent: February 25, 2014
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Thierry Glauser, Connie S. Kwok, Charles D. Claude, Eugene T. Michal, Yiwen Tang, Irina Astafieva, John Whatley, Stephen D. Pacetti, Ashok Shah
  • Drug Eluting Implantable Medical Device With Hemocompatible And/Or Prohealing Topcoat
    Publication number: 20140031919
    Abstract: The present invention relates to implantable medical devices coated with polymer having hemocompatible and/or prohealing moieties appended thereto and to their use in the treatment of vascular diseases.
    Type: Application
    Filed: September 27, 2013
    Publication date: January 30, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, Yiwen Tang
  • Methods for modulating the release rate of a drug-coated stent
    Patent number: 8637111
    Abstract: Methods for modulating the release rate of a drug coated stent are disclosed.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: January 28, 2014
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Shaw Ling Hsu, Ni Ding, Yiwen Tang, Fuh-Wei Tang, Lothar Walter Kleiner, Syed Faiyaz Ahmed Hossainy
  • Methods of treatment of polymeric coatings for control of agent release rates
    Publication number: 20140004250
    Abstract: The present disclosure teaches methods of controlling the release rate of agents from a polymeric matrix that include designing and creating a predetermined initial morphology (IM) profile in a polymeric matrix. The teachings indicate, inter alia, that control over the release rate of agents can provide for an improved control over the administration of agents as well as have an effect upon the mechanical integrity and absorption rate of the polymeric matrix.
    Type: Application
    Filed: July 29, 2013
    Publication date: January 2, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Syed F.A. Hossainy, Fuh-Wei Tang, Lothar W. Kleiner, Thierry Glauser, Yiwen Tang, Wouter E. Roorda, Stephen D. Pacetti, Gina Zhang, Yung-Ming Chen, Andrew F. McNiven, Sean A. McNiven, Brandon J. Yoe
  • Thermal treatment of an implantable medical device
    Patent number: 8586125
    Abstract: A method of manufacturing an implantable medical device, such as a drug eluting stent, is disclosed. The method includes subjecting an implantable medical device that includes a polymer to a thermal condition. The thermal condition can result in reduction of the rate of release of an active agent from the device subsequent to the implantation of the device and/or improve the mechanical properties of a polymeric coating on the device.
    Type: Grant
    Filed: September 16, 2010
    Date of Patent: November 19, 2013
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Yiwen Tang, Manish B. Gada
  • Polyethylene glycol/poly(butylene terephthalate) copolymer coated devices including EVEROLIMUS
    Patent number: 8551512
    Abstract: Methods for making coatings on an implantable device such as a drug-eluting stent comprising a polymer and nano or microparticles of a drug in slow-dissolving polymorph, implantable devices produced by the methods and methods of using the coatings are provided.
    Type: Grant
    Filed: March 22, 2004
    Date of Patent: October 8, 2013
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed Faiyaz Ahmed Hossainy, Yiwen Tang, Homayon Askaryar, Qing Lin, Thierry Glauser
  • Drug eluting implantable medical device with hemocompatible and/or prohealing topcoat
    Patent number: 8545868
    Abstract: The present invention relates to implantable medical devices coated with polymer having hemocompatible and/or prohealing moieties appended thereto and to their use in the treatment of vascular diseases.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: October 1, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, Yiwen Tang
  • Semi-Crystalline Composition For Coating
    Publication number: 20130230564
    Abstract: The present invention provides a coating comprising a semi-crystalline polymer on an implantable device and methods of making and using the same.
    Type: Application
    Filed: February 19, 2013
    Publication date: September 5, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, Yiwen Tang, Syed Faiyaz Ahmed Hossainy, Florencia Lim, Michael Huy Ngo, O. Mikael Trollsas
  • Polyethylene glycol/poly(butylene terephthalate) copolymer coated devices including EVEROLIMUS
    Publication number: 20130087270
    Abstract: Methods for making coatings on an implantable device such as a drug-eluting stent comprising a polymer and nano or microparticles of a drug in slow-dissolving polymorph, implantable devices produced by the methods and methods of using the coatings are provided.
    Type: Application
    Filed: March 22, 2004
    Publication date: April 11, 2013
    Inventors: Syed Faiyaz Hossainy, Yiwen Tang, Homayon Askaryar, Qing Lin, Thierry Glauser
  • Implantable medical device coatings with improved mechanical stability
    Patent number: 8377116
    Abstract: The present invention provides an implantable medical device coating that has improved stability, a medical device coated with such coating, and a method of increasing the stability of an implantable medical device coating, wherein the coating comprises a stereocomplex f poly(D-lactic acid) and poly(L-lactice acid).
    Type: Grant
    Filed: March 20, 2008
    Date of Patent: February 19, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Shaw Ling Hsu, Yiwen Tang, Lothar W. Kleiner, Fuh-Wei Tang, Ni Ding, Syed Faiyaz Ahmed Hossainy
  • Drug eluting implantable medical device with hemocompatible and/or prohealing topcoat
    Patent number: 8357390
    Abstract: The present invention relates to implantable medical devices coated with polymer having hemocompatible and/or prohealing moieties appended thereto and to their use in the treatment of vascular diseases.
    Type: Grant
    Filed: April 23, 2012
    Date of Patent: January 22, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, Yiwen Tang
  • Methods For Modulating The Release Rate Of A Drug-Coated Stent
    Publication number: 20120328770
    Abstract: Methods for modulating the release rate of a drug coated stent are disclosed.
    Type: Application
    Filed: September 6, 2012
    Publication date: December 27, 2012
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Shaw Ling Hsu, Ni Ding, Yiwen Tang, Fuh-Wei Tang, Lothar Walter Kleiner, Syed Faiyaz Ahmed Hossainy
  • Coatings for implantable medical devices comprising hydrophilic substances and methods for fabricating the same
    Patent number: 8309112
    Abstract: A segmented polyurethane and an amphiphilic random or block copolymer are disclosed. The segmented polyurethane and the amphiphilic random or block copolymer can be used for fabricating a coating for an implantable medical device such as a stent.
    Type: Grant
    Filed: December 24, 2003
    Date of Patent: November 13, 2012
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Thierry Glauser, Connie S. Kwok, Charles D. Claude, Eugene T. Michal, Yiwen Tang, Irina Astafieva, John Whatley, Stephen D. Pacetti, Ashok Shah
  • Methods for modulating the release rate of a drug-coated stent
    Patent number: 8293318
    Abstract: Methods for modulating the release rate of a drug coated stent are disclosed.
    Type: Grant
    Filed: August 29, 2007
    Date of Patent: October 23, 2012
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Shaw Ling Hsu, Ni Ding, Yiwen Tang, Fuh-Wei Tang, Lothar Walter Kleiner, Syed Faiyaz Ahmed Hossainy