Patents by Inventor Wouter E. Roorda

Wouter E. Roorda 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).

  • Publication number: 20100179589
    Abstract: An anchor for using a closure device includes a body being configured to move from a pre-deployed state to a deployed state. In the pre-deployed state, the body has a first width aspect relative to a direction of deployment and a second width aspect in the deployed state relative to the direction of deployment, the second width aspect being greater than the first width aspect and wherein the body is formed from a rapidly eroding material configured to erode through dissolution within a body lumen.
    Type: Application
    Filed: January 8, 2010
    Publication date: July 15, 2010
    Applicant: ABBOTT VASCULAR INC.
    Inventors: Wouter E. Roorda, Laveille K. Voss, Kelly J. McCrystle, Karim S. Osman
  • Publication number: 20100114159
    Abstract: A device for closing an opening in a wall of a body lumen includes a closure element with a first flange and a second flange. Both the first flange and the second flange may have a delivery cross-sectional dimension and a deployed cross-sectional dimension. The device for closing an opening further includes a first coupler element disposed on the first flange and a second coupler element disposed on the second flange, the first and second coupler elements cooperating to couple the first flange to the second flange.
    Type: Application
    Filed: October 29, 2009
    Publication date: May 6, 2010
    Applicant: ABBOTT VASCULAR INC.
    Inventors: Wouter E. Roorda, Kelly J. McCrystle, Ian J. Clark, Laveille K. Voss, Ni Ding
  • Patent number: 7651695
    Abstract: The invention provides bioactive compositions and methods of delivery for ameliorating a vascular diseased state, particularly for the management of stenosis or restenosis following a vascular trauma or disease.
    Type: Grant
    Filed: May 18, 2001
    Date of Patent: January 26, 2010
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Vinayak D. Bhat, Steven L. Mouw, Syed F. A. Hossainy, Steven Z. Wu, Deborra Sanders Millare
  • Patent number: 7622146
    Abstract: A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
    Type: Grant
    Filed: November 2, 2006
    Date of Patent: November 24, 2009
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Syed F. A. Hossainy, Ni Ding, Fuh-Wei Tang, Stephen D. Pacetti
  • Publication number: 20090136556
    Abstract: A method and system of coating an implantable device, such as a stent, are provided.
    Type: Application
    Filed: January 30, 2009
    Publication date: May 28, 2009
    Applicant: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Wouter E. Roorda, Ni Ding
  • Patent number: 7504125
    Abstract: A method and system of coating an implantable device, such as a stent, are provided.
    Type: Grant
    Filed: December 28, 2001
    Date of Patent: March 17, 2009
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Wouter E. Roorda, Ni Ding
  • Patent number: 7491233
    Abstract: A coating for a medical device, particularly for a drug eluting stent, is described. The coating includes a purified polymer such as a polyacrylate.
    Type: Grant
    Filed: July 19, 2002
    Date of Patent: February 17, 2009
    Assignee: Advanced Cardiovascular Systems Inc.
    Inventors: Ni Ding, Wouter E Roorda
  • Publication number: 20090004286
    Abstract: Compositions and methods of using the compositions to achieve a therapeutic effect are provided.
    Type: Application
    Filed: August 26, 2008
    Publication date: January 1, 2009
    Inventors: WOUTER E. ROORDA, Stephen D. Pacetti
  • Publication number: 20080213462
    Abstract: A process for coating an implantable device is disclosed. In this process, at least one implantable device is tumbled. As the implantable device is being tumbled, a coating substance is introduced to coat the implantable device with the coating substance.
    Type: Application
    Filed: March 6, 2008
    Publication date: September 4, 2008
    Inventors: Wouter E. Roorda, Stephen D. Pacetti
  • Publication number: 20080167711
    Abstract: A combination drug treatment for inhibiting stenosis or restenosis is disclosed. The combination treatment is an active component containing both an anti-inflammatory substance and an anti-thrombotic substance which, together, contribute to an inhibiting effect on the initial stages of stenosis or restenosis. The active component can be delivered to a site of treatment by being carried on a device, such as a stent.
    Type: Application
    Filed: March 20, 2008
    Publication date: July 10, 2008
    Applicant: Advanced Cardiovascular Systems Inc.
    Inventor: Wouter E. Roorda
  • Publication number: 20080132592
    Abstract: The present invention relates to providing a porous, hydrophobic polymer substrate with a hemocompatible substance. One embodiment of the present invention relates to the providing of expanded poly(tetrafluoroethylene) with one or more complexes of heparin, typically containing heparin in combination with a hydrophobic counter ion. The hemocompatible substance is dissolved in a mixture of solvents in which a first solvent wets the polymer substrate to be coated and the second solvent enhances the solubility of the hemocompatible substance material in the solvent mixture. Typical first solvents wetting a hydrophobic polymer substrate include non-polar such as hydrocholorofluorocarbons. Typical second solvents include polar solvents such as organic alcohols and ketones. Azeotropic mixtures of the second solvent in the first solvent are used in some embodiments of the present invention although second solvents may be employed in a range of concentration ranges from less than 0.1% up to saturation.
    Type: Application
    Filed: January 28, 2008
    Publication date: June 5, 2008
    Inventors: WOUTER E. ROORDA, Niraj Shah, Andre-Jean Lundkvist
  • Publication number: 20080125857
    Abstract: Various embodiments of the present invention provide a medical device comprising at least one blood-contacting surface comprising a porous hydrophobic polymer substrate, wherein at least a portion of the at least one blood-contacting surface comprises a hemocompatible polymer substrate. One embodiment of the present invention relates to the providing of expanded poly(tetrafluoroethylene) with one or more complexes of heparin, typically containing heparin in combination with a hydrophobic counter ion. The hemocompatible substance is dissolved in a mixture of solvents in which a first solvent wets the polymer substrate to be coated and the second solvent enhances the solubility of the hemocompatible substance material in the solvent mixture. Typical first solvents wetting a hydrophobic polymer substrate include non-polar such as hydrocholorofluorocarbons. Typical second solvents include polar solvents such as organic alcohols and ketones.
    Type: Application
    Filed: January 28, 2008
    Publication date: May 29, 2008
    Inventors: Wouter E. Roorda, Niraj Shah, Andre-Jean Lundkvist
  • Patent number: 7247313
    Abstract: A coating for a medical device, particularly for a drug eluting stent, is described. The coating can include a polyacrylate, a blend of polyacrylates, or a blend of the polyacrylate with other polymers, for example, poly(ethylene-co-vinyl alcohol).
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: July 24, 2007
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Ni Ding, Stephen D. Pacetti, Eugene T. Michal, Ashok A. Shah, Syed F. A. Hossainy
  • Patent number: 7175873
    Abstract: A method of coating an implantable medical device, such as a stent, is disclosed. The method includes applying a formulation on a first polymer layer containing a therapeutic substance to form a second layer. The formulation can contain a highly hydrophobic polymer or a solvent which is a poor solvent for the drug or the polymer of the first layer. The formulation can have a low surface tension value or a high Weber number value.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: February 13, 2007
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Syed F. A. Hossainy, Ni Ding, Fuh-Wei Tang, Stephen D. Pacetti
  • Patent number: 7033602
    Abstract: Coatings for medical devices which include polycationic peptides such as L-arginine and methods for fabricating the coatings are disclosed.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: April 25, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Stephen D. Pacetti, Eugene T Michal, Syed F A Hossainy, Ni Ding, Wouter E Roorda
  • Patent number: 7014861
    Abstract: A composition and a method for increasing the permeability of membrane junctions or cell membranes for delivery of a drug to target tissues are disclosed. Also disclosed are methods and devices for local drug delivery.
    Type: Grant
    Filed: October 24, 2003
    Date of Patent: March 21, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Vinayak D. Bhat, Paul M. Consigny
  • Patent number: 7008642
    Abstract: Compositions and methods of using the compositions to achieve a therapeutic effect are provided.
    Type: Grant
    Filed: February 12, 2001
    Date of Patent: March 7, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Stephen D. Pacetti
  • Publication number: 20040261698
    Abstract: An apparatus for coating stent is disclosed. The apparatus can be used to coat multiple stents or a large number of stents simultaneously. The apparatus includes a chamber that can be rotated or tumbled during the application of a coating substance to the stents.
    Type: Application
    Filed: July 19, 2004
    Publication date: December 30, 2004
    Inventors: Wouter E. Roorda, Stephen D. Pacetti
  • Patent number: 6833153
    Abstract: The present invention relates to coating a porous, hydrophobic polymer with a hemocompatible coating and to the materials produced thereby. One embodiment of the present invention relates to the coating of expanded poly(tetrafluoroethylene) with one or more complexes of heparin, typically containing heparin in combination with a hydrophobic counter ion. The hemocompatible coating is dissolved in a mixture of solvents in which a first solvent wets the polymer to be coated and the second solvent enhances the solubility of the hemocompatible coating material in the solvent mixture. Typical first solvents wetting hydrophobic polymers include non-polar such as hydrocholorofluorocarbons. Typical second solvents include polar solvents such as organic alcohols and ketones. Azeotropic mixtures of the second solvent in the first solvent are used in some embodiments of the present invention although second solvents may be employed in a range of concentration ranges from less than 0.1% up to saturation.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: December 21, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Wouter E. Roorda, Niraj Shah, Andrė-Jean Lundkvist
  • Patent number: 6818247
    Abstract: A composition comprising an ethylene vinyl alcohol copolymer and a dimethyl acetamide solvent is provided for forming a coating on prostheses such as stents. The composition can include an active agent or therapeutic substance. Methods are also provided for coating the stents.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: November 16, 2004
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: Yung-Ming Chen, Syed F. A. Hossainy, Deborra Sanders Millare, Wouter E. Roorda, Ashok A. Shah