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).

  • IMPLANTABLE MEDICAL DEVICES FABRICATED FROM POLYURETHANES WITH BIODEGRADABLE HARD AND SOFT BLOCKS AND BLENDS THEREOF
    Publication number: 20130324676
    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 polyurethane block copolymer including soft polymer blocks and a hard polymer blocks.
    Type: Application
    Filed: August 5, 2013
    Publication date: December 5, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • METHOD OF MAKING POLYMER-BIOCERAMIC COMPOSITE IMPLANTABLE MEDICAL DEVICES
    Publication number: 20130324636
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Application
    Filed: August 7, 2013
    Publication date: December 5, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: David C. GALE, Yunbing WANG, Syed Faiyaz Ahmed HOSSAINY, Bin HUANG, Garth WIKES, Vincent J. GUERIGUIAN
  • Methods to increase fracture resistance of a drug-eluting medical device
    Patent number: 8597716
    Abstract: Methods for increasing the fracture resistance of a polymer stent's drug-polymer coating and scaffolding including applying a coating and crimping using techniques that increase the resistance to fracture in the coating layer and scaffolding and scaffolding.
    Type: Grant
    Filed: June 23, 2009
    Date of Patent: December 3, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Dan Castro, Yunbing Wang
  • BIORESORBABLE POLYMER SCAFFOLD AND TREATMENT OF CORONARY ARTERY LESIONS
    Publication number: 20130317596
    Abstract: Methods of treating coronary heart disease with bioresorbable polymer stents are described.
    Type: Application
    Filed: March 15, 2013
    Publication date: November 28, 2013
    Inventors: Richard RAPOZA, Susan VELDHOF, Yunbing WANG
  • Polymer Scaffold With Multi-Pleated Balloon
    Publication number: 20130310913
    Abstract: A medical device includes a polymer scaffold crimped to a balloon. The balloon is formed with between 6 and 15 pleats to provide a uniform expansion of the scaffold when the balloon is inflated. Also provided are methods for crimping a scaffold to a multi-pleated balloon and methods for making a multi-pleated balloon.
    Type: Application
    Filed: May 16, 2012
    Publication date: November 21, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Manish Gada
  • FLOW REGULATION VALVE FOR CONTROLLING INFLATION RATE OF A BALLOON DEPLOYING A SCAFFOLD
    Publication number: 20130304182
    Abstract: An apparatus and method for controlling inflation pressure, pressurization rate, and volumetric flow rate of a balloon during deployment of a stent or scaffold is disclosed.
    Type: Application
    Filed: May 14, 2012
    Publication date: November 14, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Stephen D. Pacetti, Yunbing Wang
  • METHOD TO MINIMIZE CHAIN SCISSION AND MONOMER GENERATION IN PROCESSING OF POLY(L-LACTIDE) STENT
    Publication number: 20130300034
    Abstract: Methods of fabricating an implantable medical devices such as stents made from biodegradable polymers are disclosed that reduce or minimize chain scission and monomer generation during processing steps. The method includes processing a poly(L-lactide) resin having an number average molecular weight between 150 to 200 kD in an extruder in a molten state. A poly(L-lactide) tube is formed from the processed resin and a stent is fabricated from the tube. The number average molecular weight of the poly(L-lactide) of the stent after sterilization is 70 to 100 kD.
    Type: Application
    Filed: July 19, 2013
    Publication date: November 14, 2013
    Inventors: Yunbing Wang, James OBERHAUSER
  • Uniform Crimping and Deployment Methods for Polymer Scaffold
    Publication number: 20130255853
    Abstract: A medical device-includes a scaffold crimped to a catheter having an expansion balloon. The scaffold is crimped to the balloon by a process that includes one or more balloon pressurization steps. The balloon pressurization steps are selected to enhance scaffold retention to the balloon and maintain a relatively uniform arrangement of balloon folds about the inner surface of the crimped scaffold so that the scaffold expands in a uniform manner when the balloon is inflated.
    Type: Application
    Filed: April 3, 2012
    Publication date: October 3, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Rommel Lumauig, James Oberhauser
  • MAGNESIUM ALLOY IMPLANTS WITH CONTROLLED DEGRADATION
    Publication number: 20130261735
    Abstract: Stents or scaffolds made from magnesium or magnesium alloys including additives or barrier coatings that modify the corrosion rate of the stent are disclosed. Methods of forming barrier coatings that modify the corrosion rate of the stent are disclosed.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Stephen D. Pacetti, Yunbing Wang, Ni Ding
  • CONTROL OF BALLOON INFLATION RATE DURING DEPLOYMENT OF SCAFFOLD
    Publication number: 20130261729
    Abstract: An apparatus and method for controlling inflation pressure and pressurization rate of a balloon during deployment of a stent or scaffold is disclosed.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Applicant: Abbott Caridovascular Systems Inc.
    Inventors: Matthew Gillick, Yunbing Wang, Justin Mann, Bruce Wilson, James Oberhauser
  • Bioabsorbable scaffolds made from composites
    Patent number: 8545546
    Abstract: Bioabsorbable scaffolds made at least in part of a poly(L-lactide)-based composite are disclosed. The composite includes poly(4-hydroxybutyrate) or poly(L-lactide)-b-polycaprolactone block copolymer, which increases the fracture toughness or fracture resistance of the scaffold. The composite can further include bioceramic particles, L-lactide monomer, or both dispersed throughout the composite. The bioceramic particles improve the radial strength and stiffness of the scaffold. The L-lactide monomer is used to control the absorption rate of the scaffold.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: October 1, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Polymer-Bioceramic Composite Medical Devices with Bioceramic Particles having Grafted Polymers
    Publication number: 20130253637
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Application
    Filed: April 19, 2013
    Publication date: September 26, 2013
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale
  • Reducing crimping damage to polymer scaffold
    Patent number: 8539663
    Abstract: A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold is crimped to the catheter by a multi-step process for increasing scaffold-catheter yield following a crimping sequence. Damage reduction during a crimping sequence includes modifying blades of a crimper, adopting a multi-step crimping sequence, and inflating a supporting balloon to support the scaffold during crimping.
    Type: Grant
    Filed: August 23, 2010
    Date of Patent: September 24, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Luis Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • Fabricating an implantable medical device from an amorphous or very low crystallinity polymer construct
    Patent number: 8535593
    Abstract: Methods of fabricating a polymeric implantable device with improved fracture toughness through annealing, nucleating agents, or both are disclosed herein. A polymeric construct that is completely amorphous or that has a very low crystallinity is annealed with no or substantially no crystal growth to increase nucleation density. Alternatively, the polymer construct includes nucleating agent. The crystallinity of the polymer construct is increased with a high nucleation density through an increase in temperature, deformation, or both. An implantable medical device, such as a stent, can be fabricated from the polymer construct after the increase in crystallinity.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: September 17, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Lothar W. Kleiner
  • Stents including poly(L-lactide) formulations that minimize molecular weight drop during processing
    Patent number: 8529617
    Abstract: A stent scaffolding including a polymer formulation comprising PLLA and polymandelide is disclosed. 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: Grant
    Filed: May 25, 2012
    Date of Patent: September 10, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Byron Lambert, Yunbing Wang, James Oberhauser
  • Method of making polymer-bioceramic composite implantable medical devices
    Patent number: 8512735
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices, such as stents are disclosed. A suspension solution is formed including a fluid, a biodegradable polymer, and bioceramic particles. The biodegradable polymer and particles are precipitated from the suspension to form a mixture. A composite is formed by combining the mixture with another polymer and a scaffolding is formed from the composite.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: August 20, 2013
    Assignee: Abbott 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 polyurethanes with biodegradable hard and soft blocks and blends thereof
    Patent number: 8501290
    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 polyurethane block copolymer including soft polymer blocks and a hard polymer blocks.
    Type: Grant
    Filed: January 15, 2008
    Date of Patent: August 6, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Method to minimize chain scission and monomer generation in processing of poly(L-lactide) stent
    Patent number: 8496865
    Abstract: Methods of fabricating an implantable medical devices such as stents made from biodegradable polymers are disclosed that reduce or minimize chain scission and monomer generation during processing steps. The method includes processing a poly(L-lactide) resin having an number average molecular weight between 150 to 200 kD in an extruder in a molten state. A poly(L-lactide) tube is formed from the processed resin and a stent is fabricated from the tube. The number average molecular weight of the poly(L-lactide) of the stent after sterilization is 70 to 100 kD.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: July 30, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, James Oberhauser
  • Methods to improve adhesion of polymer coatings over stents
    Patent number: 8486482
    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: July 1, 2011
    Date of Patent: July 16, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Daniel A. Castro, Stephen D. Pacetti
  • Implantable medical devices fabricated from branched polymers
    Patent number: 8486135
    Abstract: This invention relates to implantable medical devices, such as stents, fabricated from hyperbranched-like polymers, comb-like polymers, star polymers, dendrimer-like star polymers, dendrimers, and mixtures thereof.
    Type: Grant
    Filed: April 9, 2007
    Date of Patent: July 16, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale, Bin Huang, Mikael O. Trollsas, Thierry Glauser, Florian Ludwig