Patents by Inventor Cole H. Chen

Cole H. Chen 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).

  • Method of molding silicone elastomer drug carrier in an endocardial lead
    Patent number: 7363091
    Abstract: A drug-eluting endocardial lead and method of manufacture. The silicone elastomer of the present invention is ideally suited to a manufacturing environment due to its extended pot life and decreased curing time. A preferred silicone elastomer is comprised of a multi-part mixture having at least a base portion and a curing portion. Additionally, since curing does not begin until the base and curing portions are combined, the mixing can be physically undertaken closer to the location of the endocardial lead and the curing “clock” does not start until the mixing occurs and external heat is applied. Since the silicone elastomer formed by base and curing components have improved the pot life and curing characteristics, the mixture is suitable for mixing with a steroid and then dispensing into an endocardial lead tip thus eliminating current design limitations imposed by current art while concomitantly minimizing manufacturing costs.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: April 22, 2008
    Assignee: Pacesetter Inc.
    Inventors: Cole H. Chen, Phong D. Doan, Yougandh Chitre, John R. Helland
  • Method of manufacturing a drug-eluting endocardial lead utilizing silicone elastomer as a drug carrier
    Patent number: 7174221
    Abstract: A drug-eluting endocardial lead and method of manufacture. The silicone elastomer of the present invention is ideally suited to a manufacturing environment due to its extended pot life and decreased curing time. A preferred silicone elastomer is comprised of a multi-part mixture having at least a base portion and a curing portion. Additionally, since curing does not begin until the base and curing portions are combined, the mixing can be physically undertaken closer to the location of the endocardial lead and the curing “clock” does not start until the mixing occurs and external heat is applied. Since the silicone elastomer formed by base and curing components have improved the pot life and curing characteristics, the mixture is suitable for mixing with a steroid and then dispensing into an endocardial lead tip thus eliminating current design limitations imposed by current art while concomitantly minimizing manufacturing costs.
    Type: Grant
    Filed: December 12, 2003
    Date of Patent: February 6, 2007
    Assignee: Pacesetter, Inc.
    Inventors: Cole H. Chen, Phong D. Doan, Yougandh Chitre, John R. Helland