Patents by Inventor Christopher R. Larson

Christopher R. Larson 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).

  • Patent number: 5891110
    Abstract: A catheter is disclosed which includes an over-the-wire type balloon catheter with a guide wire wherein the catheter includes a polyethylene inner tube and an outer tube having a relatively stiff proximal outer section, a midshaft section of lesser stiffness, and a tapering distal outer section of the least stiffness. An inflatable balloon is connected to the distal ends of the inner tube and the outer tube. The guide wire may be removed from and inserted into the guide wire lumen at either end of the catheter.
    Type: Grant
    Filed: October 15, 1997
    Date of Patent: April 6, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: Christopher R. Larson, Brook Q. Ren, Tim Stivland, Mirna A. Slayhi
  • Patent number: 5549552
    Abstract: A medical system is disclosed which includes an over-the-wire type balloon catheter and a guide wire wherein the catheter includes a polymer outer tube, and an inner tube having a metallic proximal portion and a polymer distal portion. An inflatable balloon is connected to the distal ends of the inner tube and the outer tube. The guide wire may be removed from and inserted into the guide wire lumen at either end of the catheter. The catheter may further include a transition member traversing the junction between the proximal and distal portions of the inner tube. The transition member may be in the form of a wire, a coil or a tube, and may be made of cold drawn stainless steel or a superelastic alloy. The metallic proximal portion of the inner tube may have a wall thickness greater than or equal to 0.0020 inches and an outside diameter less than or equal to 0.0255 inches. The catheter may also include a radiopaque marker band swaged onto the inner tube.
    Type: Grant
    Filed: March 2, 1995
    Date of Patent: August 27, 1996
    Assignee: SCIMED Life Systems, Inc.
    Inventors: Jeffrey J. Peters, Brooke Q. Ren, Christopher R. Larson