Patents by Inventor Fuh-Wei Tang

Fuh-Wei 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).

  • Stent mandrel fixture and method for reducing coating defects
    Patent number: 7776381
    Abstract: A stent mandrel fixture for supporting a stent during the application of a coating substance is provided.
    Type: Grant
    Filed: September 26, 2002
    Date of Patent: August 17, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Fuh-Wei Tang, Syed F A Hossainy, Dorie M. Happ, Ty Hu
  • Thermal Treatment of a Drug Eluting Implantable Medical Device
    Publication number: 20100136213
    Abstract: A coating and a method of coating an implantable medical device, such as a stent, is disclosed. The method includes subjecting the coating to a thermal condition such as a temperature above the glass transition temperature of a polymer included in the coating.
    Type: Application
    Filed: February 3, 2010
    Publication date: June 3, 2010
    Inventors: Syed F.A. Hossainy, Fuh-Wei Tang, Stephen D. Pacetti, Jeff Royal, Dorrie M. Happ, Kurt Scheinpflug, Ty Hu
  • METHOD OF MAKING A VARIABLE SURFACE AREA STENT
    Publication number: 20100116785
    Abstract: A stent of variable surface area as determined by stent struts. The stent can have a variable surface area per unit length which accommodates a therapeutic agent. A patterned distribution of therapeutic agent can be provided throughout the stent. The stent can have an increased level of therapeutic agent near an end of the stent. A decreased level of therapeutic agent can be provided near an end of one embodiment of a stent. Indentations can be provided at the surface of the stent with therapeutic agent disposed therein. The stent can be cut with struts of variable thickness to provide the variable stent surface area.
    Type: Application
    Filed: January 15, 2010
    Publication date: May 13, 2010
    Inventors: Syed Hossainy, Fuh-Wei Tang, Brian P. Cahill
  • Thermal treatment of a drug eluting implantable medical device
    Patent number: 7682647
    Abstract: A coating and a method of coating an implantable medical device, such as a stent, is disclosed. The method includes subjecting the coating to a thermal condition which can result in reduction of the rate of release of an active agent from the coating subsequent to the implantation of the device.
    Type: Grant
    Filed: June 25, 2003
    Date of Patent: March 23, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F. A. Hossainy, Fuh-Wei Tang, Stephen D. Pacetti, Jeff Royal, Dorie M. Happ, Kurt Scheinpflug, Ty Hu
  • Method of making a variable surface area stent
    Patent number: 7674493
    Abstract: A stent of variable surface area as determined by stent struts. The stent can have a variable surface area per unit length which accommodates a therapeutic agent. A patterned distribution of therapeutic agent can be provided throughout the stent. The stent can have an increased level of therapeutic agent near an end of the stent. A decreased level of therapeutic agent can be provided near an end of one embodiment of a stent. Indentations can be provided at the surface of the stent with therapeutic agent disposed therein. The stent can be cut with struts of variable thickness to provide the variable stent surface area.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: March 9, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed Hossainy, Fuh-Wei Tang, Brian P. Cahill
  • Method and system of purifying polymers for use with implantable medical devices
    Patent number: 7645474
    Abstract: A method and system for purifying polymers to use with medical devices, particularly for a drug eluting stent, is described.
    Type: Grant
    Filed: July 31, 2003
    Date of Patent: January 12, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Jaya Pathak, Fuh-Wei Tang
  • Rate limiting barriers for implantable devices and methods for fabrication thereof
    Patent number: 7622146
    Abstract: A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: November 24, 2009
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Syed F. A. Hossainy, Ni Ding, Fuh-Wei Tang, Stephen D. Pacetti
  • Implantable Medical Device Coatings With Improved Mechanical Stability
    Publication number: 20090240325
    Abstract: Implantable medical device coatings that have improved mechanical stability and medical devices coated with such coatings are disclosed.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 24, 2009
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Shaw Ling Hsu, Yiwen Tang, Lothar W. Kleiner, Fuh-Wei Tang, Ni Ding, Syed Faiyaz Ahmed Hossainy
  • Methods For Electrostatic Coating Of An Abluminal Stent Surface
    Publication number: 20090214756
    Abstract: A stent mandrel fixture for supporting a stent during the electrostatic application of a coating substance is provided.
    Type: Application
    Filed: May 7, 2009
    Publication date: August 27, 2009
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventors: Yung-Ming Chen, Fuh-Wei Tang
  • Apparatus and method for electrostatic coating of an abluminal stent surface
    Patent number: 7553377
    Abstract: A stent mandrel fixture for supporting a stent during the electrostatic application of a coating substance is provided.
    Type: Grant
    Filed: April 27, 2004
    Date of Patent: June 30, 2009
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Yung-Ming Chen, Fuh-Wei Tang
  • Stent Mandrel Fixture And Method For Reducing Coating Defects
    Publication number: 20090053393
    Abstract: A stent mandrel fixture for supporting a stent during the application of a coating substance is provided.
    Type: Application
    Filed: October 6, 2008
    Publication date: February 26, 2009
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventors: Fuh-Wei Tang, Syed F. A. Hossainy, Dorie M. Happ, Ty Hu
  • Stent Mandrel Fixture And Method For Reducing Coating Defects
    Publication number: 20090030509
    Abstract: A stent mandrel fixture for supporting a stent during the application of a coating substance is provided.
    Type: Application
    Filed: October 6, 2008
    Publication date: January 29, 2009
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventors: Fuh-Wei Tang, Syed F.A. Hossainy, Dorrie happ, Ty T. Hu
  • Stent Mandrel Fixture And Method For Reducing Coating Defects
    Publication number: 20090030508
    Abstract: A stent mandrel fixture for supporting a stent during the application of a coating substance is provided.
    Type: Application
    Filed: October 6, 2008
    Publication date: January 29, 2009
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventors: Fuh-Wei Tang, Syed F.A. Hossainy, Dorie Happ, Ty Hu
  • Morphology profiles for control of agent release rates from polymer matrices
    Publication number: 20080124372
    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: June 6, 2006
    Publication date: May 29, 2008
    Inventors: Syed F. A. Hossainy, Fuh-Wei Tang, Lothar Kleiner, Thierry Glauser, Yiwen Tang, Wouter Roorda, Stephen Pacetti, Gina Zhang, Yung-Ming Chen, Andrew F. McNiven, Sean A. McNiven, Brandon J. Yoe
  • Rate limiting barriers for implantable devices and methods for fabrication thereof
    Publication number: 20070059434
    Abstract: A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
    Type: Application
    Filed: November 2, 2006
    Publication date: March 15, 2007
    Inventors: Wouter Roorda, Syed Hossainy, Ni Ding, Fuh-Wei Tang, Stephen Pacetti
  • Rate limiting barriers for implantable devices and methods for fabrication thereof
    Patent number: 7175873
    Abstract: A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: February 13, 2007
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Syed F. A. Hossainy, Ni Ding, Fuh-Wei Tang, Stephen D. Pacetti
  • Concentration gradient profiles for control of agent release rates from polymer matrices
    Publication number: 20060246109
    Abstract: The present invention generally encompasses the control of the release rate of agents from a polymeric matrix. This control over the release rate of agents provides for control over, inter alia, the therapeutic, prophylactic, diagnostic, and ameliorative effects that are realized by a patient in need of such treatment. In addition, the control of the release rate of agents also has an effect upon the mechanical integrity of the polymeric matrix, as well as a relationship to a subject's absorption rate of the absorbable polymers.
    Type: Application
    Filed: April 29, 2005
    Publication date: November 2, 2006
    Inventors: Syed Hossainy, Fuh-Wei Tang, Andrew McNiven, Joseph Eppert, Gregory Kevorkian
  • Rare limiting barriers for implantable medical devices
    Patent number: 7087263
    Abstract: A coating for a medical device, particularly for a drug eluting stent, is described. The coating comprises a polymer having a weight-average molecular weight between about 200,000 and about 250,000 Daltons or a polydispersity index between about 2.6 and about 3.0.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: August 8, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Syed F A Hossainy, Fuh-Wei Tang, Houdin Dehnad
  • Thermal treatment of a drug eluting implantable medical device
    Publication number: 20040220665
    Abstract: A coating and a method of coating an implantable medical device, such as a stent, is disclosed. The method includes subjecting the coating to a thermal condition which can result in reduction of the rate of release of an active agent from the coating subsequent to the implantation of the device.
    Type: Application
    Filed: June 25, 2003
    Publication date: November 4, 2004
    Inventors: Syed F.A. Hossainy, Fuh-Wei Tang, Stephen D. Pacetti, Jeff Royal, Dorie M. Happ, Kurt Scheinpflug, Ty Hu
  • Method of making a variable surface area stent
    Publication number: 20040191404
    Abstract: A stent of variable surface area as determined by stent struts. The stent can have a variable surface area per unit length which accommodates a therapeutic agent. A patterned distribution of therapeutic agent can be provided throughout the stent. The stent can have an increased level of therapeutic agent near an end of the stent. A decreased level of therapeutic agent can be provided near an end of one embodiment of a stent. Indentations can be provided at the surface of the stent with therapeutic agent disposed therein. The stent can be cut with struts of variable thickness to provide the variable stent surface area.
    Type: Application
    Filed: April 6, 2004
    Publication date: September 30, 2004
    Inventors: Syed Hossainy, Fuh-Wei Tang, Brian P. Cahill