Patents by Inventor Bobbie Hsi

Bobbie Hsi 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).

  • Extendable guidewire assembly
    Patent number: 5415178
    Abstract: An extendable guidewire assembly comprising: a guidewire having a tapered proximal end; an extension wire having a tapered distal end; and a polymeric tubular sleeve reinforced with a helical coil that is fixedly attached about the tapered distal end of the extension wire such that the tapered distal end of the extension wire extends partly through the sleeve lumen, said lumen having a diameter that is smaller than the untapered diameter of the guidewire and wherein said lumen expands radially when the sleeve is under axial compression and contracts radially when the sleeve is under axial tension.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: May 16, 1995
    Assignee: Target Therapeutics
    Inventors: Bobbie Hsi, Gene Samson