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).

  • Polymer-bioceramic composite implantable medical device with different types of bioceramic particles
    Patent number: 9199004
    Abstract: Implantable medical devices fabricated from polymer/bioceramic composites with different types of bioceramic particles are disclosed.
    Type: Grant
    Filed: July 1, 2013
    Date of Patent: December 1, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale, Syed F. A. Hossainy
  • Uniform crimping and deployment methods for polymer scaffold
    Patent number: 9199408
    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: April 3, 2012
    Date of Patent: December 1, 2015
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Rommel Lumauig, James Oberhauser
  • SHEATHS REDUCING RECOIL AND LOSS OF RETENTION FOR POLYMER SCAFFOLDS CRIMPED TO BALLOONS
    Publication number: 20150328028
    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: Application
    Filed: May 19, 2015
    Publication date: November 19, 2015
    Inventors: Yunbing Wang, Jhoan Bayogo
  • Polyester implantable medical device with controlled in vivo biodegradability
    Patent number: 9186440
    Abstract: This invention relates to blends of high, optionally medium, and low molecular weight polyesters where at least the low molecular weight polyester is substituted with an acidic moiety, the biodegradation of the blends being controllable by selection of the mean molecular weigh of each fraction, the quantity of each fraction in the blend and the amount and pKa of the acidic moiety(ies).
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: November 17, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventor: Yunbing Wang
  • Rubber toughened bioresorbable polymer peripheral scaffolds
    Patent number: 9180228
    Abstract: Bioabsorbable scaffolds are disclosed with a rigid polymer component and a rubbery polymer component. The rubbery polymer component is miscible, partially miscible, or immiscible with the rigid polymer component.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: November 10, 2015
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: John Stankus, Yunbing Wang, Mikael Trollsas, Syed Faiyaz Ahmed Hossainy, Michael H. Ngo, Dariush Davalian
  • Bioabsorbable Stent and Treatment That Elicits Time-Varying Host-Material Response
    Publication number: 20150313735
    Abstract: Methods of treating a diseased blood vessel exhibiting stenosis with a bioabsorbable 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: December 23, 2014
    Publication date: November 5, 2015
    Inventors: Richard Rapoza, Yunbing Wang, James P. Oberhauser, Syed Hossainy
  • BIOABSORBABLE STENT WITH RADIOPAQUE LAYER AND METHOD OF FABRICATION
    Publication number: 20150305827
    Abstract: Embodiments of a stent and methods of fabricating the same with a bioabsorbable radiopaque layer are disclosed.
    Type: Application
    Filed: July 2, 2015
    Publication date: October 29, 2015
    Inventors: Yunbing Wang, David C. Gale
  • Controlling moisture in and plasticization of bioresorbable polymer for melt processing
    Patent number: 9168677
    Abstract: Methods and systems for controlling the moisture content of biodegradable and bioresorbable polymer resin during extrusion above a lower limit that allows for plasticization of the polymer resin melt and below an upper limit to reduce or prevent molecular weight loss are disclosed. Methods are further disclosed involving plasticization of a polymer resin for feeding into an extruder with carbon dioxide and freon.
    Type: Grant
    Filed: June 20, 2014
    Date of Patent: October 27, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Bethany Steichen, Stephen Pacetti, Manish Gada, Thierry Glauser, Lothar Kleiner, Yunbing Wang, James Oberhauser, Ni Ding
  • Methods for crimping a polymeric scaffold to a delivery balloon and achieving stable mechanical properties in the scaffold after crimping
    Patent number: 9155870
    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: April 28, 2014
    Date of Patent: October 13, 2015
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventor: Yunbing Wang
  • Polymer-bioceramic composite medical devices with bioceramic particles having grafted polymers
    Patent number: 9144487
    Abstract: Methods and devices relating to polymer-bioceramic composite implantable medical devices are disclosed.
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: September 29, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale
  • STENTS WITH ADHESION PROMOTING LAYER
    Publication number: 20150250625
    Abstract: Stents are disclosed with an adhesion promoting layer that improves adhesion of polymer coatings over polymer surfaces of a stent substrate.
    Type: Application
    Filed: May 19, 2015
    Publication date: September 10, 2015
    Inventors: Yunbing Wang, Daniel Castro, Stephen D. Pacetti
  • REDUCING CRIMPING DAMAGE TO A POLYMER SCAFFOLD
    Publication number: 20150238332
    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: April 29, 2015
    Publication date: August 27, 2015
    Inventors: Yunbing Wang, Luis Sucy Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • METHOD OF INCREASING STENT RETENTION OF BIOABSORBABLE SCAFFOLDING WITH A SHEATH
    Publication number: 20150224707
    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. A variable diameter sheath with a central portion that prevents expansion of the stent when the balloon is pressurized and larger diameter ends is disposed over the crimped stent-balloon assembly. The balloon is pressurized and the larger diameter ends of the sheath allow the balloon beyond the ends of the stent to expand. The balloon is then depressurized.
    Type: Application
    Filed: April 21, 2015
    Publication date: August 13, 2015
    Inventors: Yunbing Wang, Xioa Ma, Rommel C. Lumauig
  • Bioabsorbable stent with radiopaque layer and method of fabrication
    Patent number: 9101698
    Abstract: Embodiments of a stent and methods of fabricating the same with a bioabsorbable radiopaque layer are disclosed.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: August 11, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, David C. Gale
  • POLYMERIC STENT CRIMPED TO A DELIVERY BALLOON
    Publication number: 20150217509
    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: April 14, 2015
    Publication date: August 6, 2015
    Inventors: Kevin F. Jow, Arlene Sucy Yang, Yunbing Wang, Kathleen W. Yan
  • Reducing crimping damage to a polymer scaffold
    Patent number: 9084693
    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: September 11, 2013
    Date of Patent: July 21, 2015
    Assignee: ABBOTT CARDIOVASCULAR SYSTEMS INC.
    Inventors: Yunbing Wang, Luis Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan
  • Sheaths reducing recoil and loss of retention for polymer scaffolds crimped to balloons
    Patent number: 9072590
    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: December 7, 2012
    Date of Patent: July 7, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Jhoan Bayogo
  • Polymer composite stent with polymer particles
    Patent number: 9072820
    Abstract: Polymer composite implantable medical devices, such as stents, and methods of manufacturing such devices are disclosed.
    Type: Grant
    Filed: June 26, 2006
    Date of Patent: July 7, 2015
    Assignee: ADVANCED CARDIOVASCULAR SYSTEMS, INC.
    Inventors: David C. Gale, Yunbing Wang
  • Methods to improve adhesion of polymer coatings over stents
    Patent number: 9061091
    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: June 23, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Daniel A. Castro, Stephen D. Pacetti
  • Reducing crimping damage to a polymer scaffold
    Patent number: 9044352
    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: September 11, 2013
    Date of Patent: June 2, 2015
    Assignee: Abbott Cardiovascular Systems Inc.
    Inventors: Yunbing Wang, Luis Vazquez, Hung T. Nguyen, Scott H. Mueller, Kathleen Yan