Patents by Inventor Yunbing Wang

Yunbing Wang 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 FORMED FROM BIOERODIBLE METAL-BIOCERAMIC COMPOSITE
    Publication number: 20110238155
    Abstract: Medical devices and methods of fabricating such medical devices, such as stents, formed at least in part from a metal matrix composite including bioceramic particles dispersed within an erodible metal are disclosed.
    Type: Application
    Filed: June 8, 2011
    Publication date: September 29, 2011
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Tube expansion process for semicrystalline polymers to maximize fracture toughness
    Patent number: 8012402
    Abstract: Methods of fabricating a polymeric stent with improved fracture toughness including radial expansion of a polymer tube along its entire length at the same time and fabricating a stent from the expanded tube are disclosed herein.
    Type: Grant
    Filed: April 15, 2009
    Date of Patent: September 6, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Lothar W. Kleiner, James P. Oberhauser, Thierry Glauser, David K. Wrolstad, Yunbing Wang
  • Fixture for mechanical analysis of a hollow tube
    Patent number: 8006568
    Abstract: A test fixture for use with a Dynamic Mechanical Analyzer (DMA) restrains a hollow cylindrical tube for purposes of performing either a tensile or transverse/bending load test. The fixture includes a clamp that is configured to restrain the tube without imparting a preload or changing a mechanical property of the tube.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 30, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Jonathan Halderman, James Oberhauser, Yunbing Wang
  • Polymer-Bioceramic Composite Implantable Medical Devices
    Publication number: 20110207843
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Application
    Filed: May 5, 2011
    Publication date: August 25, 2011
    Applicant: Advanced Cardiovascular Systems, Inc.
    Inventors: David C. Gale, Yunbing Wang, Syed Faiyaz Ahmed Hossainy, Bin Huang, Garth L. Wilkes, Vincent J. Gueriguian
  • Polymer-Bioceramic Composite Implantable Medical Device with Different Types of Bioceramic Particles
    Publication number: 20110202126
    Abstract: Implantable medical devices fabricated from polymer/bioceramic composites with different types of bioceramic particles are disclosed.
    Type: Application
    Filed: April 28, 2011
    Publication date: August 18, 2011
    Applicant: Advanced Cardiovascular Systems, Inc.
    Inventors: Yunbing Wang, David C. Gale, Syed F.A. Hossainy
  • Methods to improve adhesion of polymer coatings over stents
    Patent number: 7998524
    Abstract: Methods are disclosed to improved adhesion of polymer coatings over polymer surfaces of stents which include plasma treatment, applying an adhesion promoting layer, surface treatments with solvents, and mechanical roughening techniques.
    Type: Grant
    Filed: December 10, 2007
    Date of Patent: August 16, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Daniel A. Castro, Stephen D. Pacetti
  • Stents Formed From Polymer-Bioceramic Composite With Radiopaque Bioceramic Particles
    Publication number: 20110172758
    Abstract: Implantable medical devices fabricated at least in part of a polymer-bioceramic composite having bioceramic particles with radiopaque functional groups grafted to a surface of the bioceramic particles are disclosed. Implantable medical devices fabricated at least in part of a radiopaque material having bioceramic particles with polymer chains grafted onto a surface of the bioceramic particles, the radiopaque functional groups being chemically bonded to the grafted polymer chains, are disclosed.
    Type: Application
    Filed: March 24, 2011
    Publication date: July 14, 2011
    Inventor: Yunbing WANG
  • Degradable polymeric implantable medical devices with a continuous phase and discrete phase
    Patent number: 7964210
    Abstract: The invention provides an implantable medical device comprising: a structural element, wherein the structural element includes: a continuous phase comprising a first polymer; a discrete phase within the continuous phase, wherein the discrete phase has a second polymer including discrete phase segments; and anchor segments that have substantially the same chemical make up as the first polymer of the continuous phase; wherein at least some of the anchor segments have partially or completely phase-separated from the discrete phase into the continuous phase.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: June 21, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale, Bin Huang, Syed F. A. Hossainy, Vincent J. Gueriguian
  • Polymer-bioceramic composite implantable medical devices
    Patent number: 7959940
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Grant
    Filed: May 30, 2006
    Date of Patent: June 14, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: David C. Gale, Yunbing Wang, Syed Faiyaz Ahmed Hossainy, Bin Huang, Garth L. Wilkes, Vincent J. Gueriguian
  • Implantable medical devices fabricated from block copolymers
    Patent number: 7956100
    Abstract: Medical devices, such as stents, fabricated at least in part from a polymer composite including a biodegradable elastomeric phase dispersed within a biodegradable polymeric matrix are disclosed. The composite is composed of a block copolymer including an elastomeric homopolymer block and a glassy polymer block.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: June 7, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Polymer-bioceramic composite implantable medical device with different types of bioceramic particles
    Patent number: 7955381
    Abstract: Implantable medical devices fabricated from polymer/bioceramic composites with different types of bioceramic particles are disclosed. The plurality of bioceramic particles can include acidic particles and basic particles, the acidic particles and basic particles having different particle size distributions. The degradation of a selected type of particle can be reduced or prevented during a selected time frame by encapsulating some or all of the selected type of particles with a bioabsorbable polymer.
    Type: Grant
    Filed: June 29, 2007
    Date of Patent: June 7, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Yunbing Wang, David C. Gale, Syed F. A. Hossainy
  • Stent formed from polymer-bioceramic composite with radiopaque bioceramic particles
    Patent number: 7935143
    Abstract: Implantable medical devices fabricated at least in part of a polymer-bioceramic composite having bioceramic particles with radiopaque functional groups grafted to a surface of the bioceramic particles are disclosed. Implantable medical devices fabricated at least in part of a radiopaque material having bioceramic particles with polymer chains grafted onto a surface of the bioceramic particles, the radiopaque functional groups being chemically bonded to the grafted polymer chains, are disclosed.
    Type: Grant
    Filed: January 2, 2008
    Date of Patent: May 3, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Degradable polymeric implantable medical devices with continuous phase and discrete phase
    Patent number: 7923022
    Abstract: An implantable medical device is disclosed comprising: a structural element, wherein the structural element includes: a continuous phase comprising a first polymer of LPLG; a discrete phase within the continuous phase, wherein the discrete phase comprises a second polymer including rapidly eroding elastic discrete phase segments. The second polymer further includes anchor segments that have the same or substantially the same chemical make up as the first polymer of the continuous phase, and at least some of the anchor segments have partially or completely phase-separated from the discrete phase into the continuous phase.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: April 12, 2011
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Yunbing Wang, David C. Gale
  • Method To Minimize Molecular Weight Drop Of Poly(L-Lactide) Stent During Processing
    Publication number: 20110065825
    Abstract: A method to reduce or minimize the reduction in molecular weight of a stent during processing is disclosed. The stent has a scaffolding including a polymer formulation comprising PLLA and polymandelide. The polymandelide reduces the molecular weight drop during processing, particularly during sterilization. The stent scaffolding can further include one or more additional stabilizing agents that additionally reduce the molecular weight drop during processing.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 17, 2011
    Inventors: Byron Lambert, Yunbing Wang, James Oberhauser
  • Polymeric Stent and Method of Making Same
    Publication number: 20110066222
    Abstract: A stent may be formed from a PLLA tubular polymer construct that is deformed in a blow mold. A desirable polymer morphology resulting in improved stent performance is obtained with a selected radial axial expansion ratio from about 20% to about 70%, a selected radial expansion ratio from about 400% to about 500%, a selected axial rate of deformation propagation at or about 0.3 mm/minute, a selected expansion pressure at or about 130 psi, and a selected expansion temperature that does not exceed 200 deg F. The tubular polymer construct may also be made of PLGA, PLLA-co-PDLA, PLLD/PDLA stereocomplex, and PLLA-based polyester block copolymer containing a rigid segment of PLLA or PLGA and a soft segment of PCL or PTMC.
    Type: Application
    Filed: September 11, 2009
    Publication date: March 17, 2011
    Inventors: Yunbing Wang, Manish B. Gada
  • METHOD TO PREVENT STENT DAMAGE CAUSED BY LASER CUTTING
    Publication number: 20110056350
    Abstract: Apparatus, method and system for cutting a polymeric stent including the use of a polymeric mandrel as a laser shielding device. The polymeric mandrel is allowed to roll freely within a polymeric tube that is cut into a polymeric stent.
    Type: Application
    Filed: September 4, 2009
    Publication date: March 10, 2011
    Inventors: David C. Gale, Yunbing Wang, Svava Maria Atladottir, Klaus Kleine
  • Polymer Blend-Bioceramic Composite Implantable Medical Devices
    Publication number: 20110057339
    Abstract: Methods and devices relating to polymer blend/bioceramic composite implantable medical devices are disclosed.
    Type: Application
    Filed: October 25, 2010
    Publication date: March 10, 2011
    Inventors: Yunbing Wang, David C. Gale
  • Method to fabricate a stent having selected morphology to reduce restenosis
    Patent number: 7901452
    Abstract: Methods of fabricating a stent and a stent having selected morphology on abluminal and luminal surfaces of the stent are disclosed.
    Type: Grant
    Filed: June 27, 2007
    Date of Patent: March 8, 2011
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: David C. Gale, Bin Huang, Yunbing Wang
  • Method To Make Poly(L-Lactide) Stent With Tunable Degradation Rate
    Publication number: 20110021717
    Abstract: Methods of making a biodegradable polymeric stent made from poly(L-lactide) and a low concentration of L-lactide monomer is disclosed. The concentration of L-lactide is adjusted to provide a degradation behavior that is suitable for different treatment applications including coronary, peripheral, and nasal. Methods include making a poly(L-lactide) material for a stent with uniformly distributed L-lactide monomer through control of polymerization conditions during PLLA synthesis, control of post-processing conditions, or both.
    Type: Application
    Filed: March 31, 2010
    Publication date: January 27, 2011
    Inventors: Yunbing Wang, Xiao Ma
  • Biodegradable Stent With Adjustable Degradation Rate
    Publication number: 20110022155
    Abstract: A biodegradable polymeric stent made from poly(L-lactide) and a low concentration of L-lactide monomer is disclosed. The concentration of L-lactide is adjusted to provide a degradation behavior that is suitable for different treatment applications including coronary, peripheral, and nasal.
    Type: Application
    Filed: July 21, 2009
    Publication date: January 27, 2011
    Inventors: Yunbing Wang, James Oberhauser, Xiao Ma