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).

  • METHODS FOR CRIMPING A POLYMERIC STENT ONTO A DELIVERY BALLOON
    Publication number: 20140033506
    Abstract: A medical device—includes a polymer stent crimped to a catheter having an expansion balloon. The stent is crimped to the balloon by a process that includes heating the stent to a temperature below the polymer's glass transition temperature to improve stent retention without adversely affecting the mechanical characteristics of the stent when later deployed to support a body lumen.
    Type: Application
    Filed: September 19, 2013
    Publication date: February 6, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Kevin F. Jow, Arlene Sucy Yang, Yunbing Wang, Kathleen W. Yan
  • BIOABSORBABLE SCAFFOLDS MADE FROM COMPOSITES
    Publication number: 20140039603
    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: Application
    Filed: September 30, 2013
    Publication date: February 6, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • SHAPE MEMORY BIORESORBABLE POLYMER PERIPHERAL SCAFFOLDS
    Publication number: 20140025161
    Abstract: Bioabsorbable scaffolds having high crush recoverability, high fracture resistance, and reduced or no recoil due to self expanding properties at physiological conditions are disclosed. The scaffolds are made from a random copolymer of PLLA and a rubbery polymer such as polycaprolactone.
    Type: Application
    Filed: July 23, 2012
    Publication date: January 23, 2014
    Applicant: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: John S. Stankus, Hugh Zhao, Mikael Trollsas, Syed Faiyaz Ahmed Hossainy, Michael H. Ngo, Yunbing Wang, Benny Serna
  • POLYMER-BIOCERAMIC COMPOSITE IMPLANTABLE MEDICAL DEVICE WITH DIFFERENT TYPES OF BIOCERAMIC PARTICLES
    Publication number: 20140018907
    Abstract: Implantable medical devices fabricated from polymer/bioceramic composites with different types of bioceramic particles are disclosed.
    Type: Application
    Filed: July 1, 2013
    Publication date: January 16, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing WANG, David C. GALE, Syed F.A. HOSSAINY
  • REDUCING CRIMPING DAMAGE TO A POLYMER SCAFFOLD
    Publication number: 20140013575
    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: Application
    Filed: September 11, 2013
    Publication date: January 16, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Luis Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • STENTS INCLUDING POLY(L-LACTIDE) FORMULATIONS THAT MINIMIZE MOLECULAR WEIGHT DROP DURING PROCESSING
    Publication number: 20140012365
    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: Application
    Filed: September 9, 2013
    Publication date: January 9, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Byron Lambert, Yunbing Wang, James Oberhauser
  • REDUCING CRIMPING DAMAGE TO A POLYMER SCAFFOLD
    Publication number: 20140008007
    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: Application
    Filed: September 11, 2013
    Publication date: January 9, 2014
    Applicant: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Luis Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • Post electron beam conditioning of polymeric medical devices
    Patent number: 8613880
    Abstract: Methods are disclosed for conditioning a polymeric stent after sterilization, and/or after crimping and before packaging, such that the properties of the polymeric stent fall within a narrower range of values. The stent is exposed to a controlled temperature at or above ambient for a period of time after radiation sterilization and/or after crimping and before sterilization. As a result, the polymeric stent properties, particularly radial strength and number-average molecular weight of the polymer of the polymeric stent, fall within a narrower range.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: December 24, 2013
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Xiao Ma, Fuh-Wei Tang, Ni Ding
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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