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 branched polymers
    Patent number: 9744259
    Abstract: Stent scaffolds comprising branched biocompatible polymers are disclosed.
    Type: Grant
    Filed: November 19, 2013
    Date of Patent: August 29, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale, Bin Huang, Mikael O. Trollsas, Thierry Glauser, Florian Ludwig
  • Method of uniform crimping and expansion of medical devices
    Patent number: 9724219
    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, 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, and to avoid any possible over-stretching of balloon material.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: August 8, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventor: Yunbing Wang
  • Magnesium alloy implants with controlled degradation
    Patent number: 9713542
    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: Grant
    Filed: March 8, 2016
    Date of Patent: July 25, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Stephen D. Pacetti, Yunbing Wang
  • Method of treating with poly(L-lactide) stent with tunable degradation rate
    Patent number: 9687594
    Abstract: Methods of treating with 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: Grant
    Filed: December 16, 2015
    Date of Patent: June 27, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Xiao Ma, James Oberhauser
  • Implantable medical devices fabricated from polymers with radiopaque groups
    Patent number: 9682178
    Abstract: Implantable medical devices comprising radiopaque star-block copolymers.
    Type: Grant
    Filed: July 30, 2012
    Date of Patent: June 20, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale, Vincent J. Gueriguian
  • Methods for crimping a polymeric scaffold to a delivery balloon and achieving stable mechanical properties in the scaffold after crimping
    Patent number: 9681971
    Abstract: A medical device-includes a polymer scaffold crimped to a catheter having an expansion balloon. The scaffold is crimped to the balloon by a process that includes inflating the delivery balloon during a diameter reduction to improve scaffold retention. A crimping temperature is maintained at about the onset of glass transition of the polymer material to facilitate more rapid stabilization of mechanical properties in the scaffold following crimping.
    Type: Grant
    Filed: September 28, 2015
    Date of Patent: June 20, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventor: Yunbing Wang
  • Uniform crimping and deployment methods for polymer scaffold
    Patent number: 9681972
    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: Grant
    Filed: October 20, 2015
    Date of Patent: June 20, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Rommel Lumauig, James Oberhauser
  • Shape memory bioresorbable polymer peripheral scaffolds
    Patent number: 9668894
    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: Grant
    Filed: January 22, 2015
    Date of Patent: June 6, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: John S. Stankus, Hugh Zhao, Mikael Trollsas, Syed Faiyaz Ahmed Hossainy, Michael H. Ngo, Yunbing Wang, Benny Serna
  • Methods to increase fracture resistance of a drug-eluting medical device
    Patent number: 9656002
    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: October 15, 2013
    Date of Patent: May 23, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Dan Castro, Yunbing Wang
  • Implantable medical devices fabricated from polyurethanes with biodegradable hard and soft blocks and blends thereof
    Patent number: 9649412
    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: August 5, 2013
    Date of Patent: May 16, 2017
    Assignee: Abbott Cardiovasculary Systems Inc.
    Inventor: Yunbing Wang
  • Reducing crimping damage to a polymer scaffold
    Patent number: 9642729
    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: April 29, 2015
    Date of Patent: May 9, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Luis Sucy Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • POST ELECTRON BEAM CONDITIONING OF POLYMERIC MEDICAL DEVICES
    Publication number: 20170113424
    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: Application
    Filed: January 3, 2017
    Publication date: April 27, 2017
    Inventors: Yunbing Wang, Xiao Ma, Fuh-Wei Tang, Ni Ding
  • BIOABSORBABLE STENT THAT MODULATES PLAQUE GEOMETRIC MORPHOLOGY AND CHEMICAL COMPOSITION
    Publication number: 20170112646
    Abstract: Methods of treating a diseased blood vessel exhibiting stenosis with a bioabsorable stent are disclosed. The implanted stent supports the section of the vessel at an increased diameter for a period of time to allow the vessel to heal. The stent loses radial strength sufficient to support the section of the vessel in less than 6 months after implantation, loses mechanical integrity, and then erodes away from the section. The biodegradable stent results in changes in properties of plaque with time as the stent degrades. The time-dependent properties include the luminal area of the plaque and plaque geometric morphology parameters.
    Type: Application
    Filed: January 5, 2017
    Publication date: April 27, 2017
    Inventors: Richard Rapoza, Yunbing Wang, James P. Oberhauser, Syed F.A. Hossainy
  • Sheaths reducing recoil and loss of retention for polymer scaffolds crimped to balloons
    Patent number: 9579181
    Abstract: A medical device includes a polymer scaffold crimped to a catheter having an expansion balloon. A single piece sheath is placed over the scaffold immediately following crimping of the scaffold to the balloon. The single piece sheath is replaced by a two-piece sheath, which is removed prior to performing a medical procedure using the medical device.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: February 28, 2017
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Jhoan Bayogo
  • Bioabsorbable stent that modulates plaque geometric morphology and chemical composition
    Patent number: 9572692
    Abstract: Methods of treating a diseased blood vessel exhibiting stenosis with a bioabsorable stent are disclosed. The implanted stent supports the section of the vessel at an increased diameter for a period of time to allow the vessel to heal. The stent loses radial strength sufficient to support the section of the vessel in less than 6 months after implantation, loses mechanical integrity, and then erodes away from the section. The biodegradable stent results in changes in properties of plaque with time as the stent degrades. The time-dependent properties include the luminal area of the plaque and plaque geometric morphology parameters.
    Type: Grant
    Filed: July 27, 2009
    Date of Patent: February 21, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Richard Rapoza, Yunbing Wang, James P. Oberhauser, Syed F. A. Hossainy
  • Post electron beam conditioning of polymeric medical devices
    Patent number: 9566723
    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: December 23, 2013
    Date of Patent: February 14, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Xiao Ma, Fuh-Wei Tang, Ni Ding
  • METHODS FOR CRIMPING A POLYMERIC STENT ONTO A DELIVERY BALLOON
    Publication number: 20170028616
    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: August 1, 2016
    Publication date: February 2, 2017
    Inventors: Kevin F. Jow, Arlene Sucy Yang, JR., Yunbing Wang, Kathleen W. Yan
  • Stents with adhesion promoting layer
    Patent number: 9554926
    Abstract: Stents are disclosed with an adhesion promoting layer that improves adhesion of polymer coatings over polymer surfaces of a stent substrate.
    Type: Grant
    Filed: May 19, 2015
    Date of Patent: January 31, 2017
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Daniel Castro, Stephen D. Pacetti
  • Control of balloon inflation rate during deployment of scaffold
    Patent number: 9517151
    Abstract: An apparatus and method for controlling inflation pressure and pressurization rate of a balloon during deployment of a stent or scaffold are disclosed. The apparatus and method involve a pressure attenuator for controlling an inflation rate of the delivery balloon.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: December 13, 2016
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Matthew Gillick, Yunbing Wang, Justin Mann, Bruce Wilson, James Oberhauser
  • Stent retained on a balloon catheter
    Patent number: 9504590
    Abstract: A balloon is inflated from a collapsed configuration, then deflated. A polymeric stem is then disposed over the deflated balloon and the stent crimped to the balloon.
    Type: Grant
    Filed: October 21, 2013
    Date of Patent: November 29, 2016
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Gregory Kilinski, Luis Vazquez