Patents by Inventor Randy Chan

Randy Chan 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).

  • Coated endovascular stent
    Publication number: 20060178738
    Abstract: An implantable stent is coated with a material that attracts heparin and with which heparin forms a bond. The stent is exposed to a heparin containing solution just prior to implantation or is first implanted and then exposed to heparinized blood. As heparin becomes detached from the stent, the implantation site is exposed to heparin to restore an effective level and thereby prevent thrombosis.
    Type: Application
    Filed: April 5, 2006
    Publication date: August 10, 2006
    Inventors: John Yan, Randy Chan
  • Method of reducing or eliminating thrombus formation
    Patent number: 7077860
    Abstract: An implantable stent is coated with a material that attracts heparin and with which heparin forms a bond. The stent is exposed to a heparin containing solution just prior to implantation or is first implanted and then exposed to heparinized blood. As heparin becomes detached from the stent, the implantation site is exposed to heparin to restore an effective level and thereby prevent thrombosis.
    Type: Grant
    Filed: June 24, 2004
    Date of Patent: July 18, 2006
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: John Y. Yan, Randy Chan
  • Coated endovascular stent
    Publication number: 20040236417
    Abstract: An implantable stent is coated with a material that attracts heparin and with which heparin forms a bond. The stent is exposed to a heparin containing solution just prior to implantation or is first implanted and then exposed to heparinized blood. As heparin becomes detached from the stent, the implantation site is exposed to heparin to restore an effective level and thereby prevent thrombosis.
    Type: Application
    Filed: June 24, 2004
    Publication date: November 25, 2004
    Inventors: John Y. Yan, Randy Chan
  • Coated endovascular stent
    Patent number: 6776792
    Abstract: An implantable stent is coated with a material that attracts heparin and with which heparin forms a bond. The stent is exposed to a heparin containing solution just prior to implantation or is first implanted and then exposed to heparinized blood. As heparin becomes detached from the stent, the implantation site is exposed to heparin to restore an effective level and thereby prevent thrombosis.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: August 17, 2004
    Assignee: Advanced Cardiovascular Systems Inc.
    Inventors: John Y. Yan, Randy Chan
  • Heparin delivery method
    Patent number: 6605114
    Abstract: A method for delivering heparin, wherein an implantable stent is coated with a material that attracts heparin and with which heparin forms a bond. The stent is exposed to a heparin containing solution just prior to implantation or is first implanted and then exposed to heparinized blood. As heparin becomes detached from the stent, the implantation site is exposed to heparin to restore an effective level and thereby prevent thrombosis.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: August 12, 2003
    Assignee: Advanced Cardiovascular Systems, Inc.
    Inventors: John Y. Yan, Randy Chan