Patents Examined by Joseph H. Cadugan
  • Patent number: 6436026
    Abstract: A flexible, continuous, axially elastic interstitial brachytherapy source is capable of elongating, shrinking and/or flexing in response to changes in the size and/or shape of a tumor, tumor bed, lesion or other tissue with which the source is in contact. In one embodiment, the source is in the form of a wire coil. The flexible and expandable/contractible nature of the source allows it to provide therapeutically effective treatment to dynamic tissue as it swells, shrinks and/or changes in shape.
    Type: Grant
    Filed: October 22, 1999
    Date of Patent: August 20, 2002
    Assignee: RadioMed Corporation
    Inventors: Piran Sioshansi, Raymond J. Bricault, Jr.
  • Patent number: 6428551
    Abstract: A magnetically navigable atherectomy device includes a cutting head, a flexible drive shaft having a proximal and a distal end, with the cutting device on the distal end, and a magnet associated with the cutting head, the magnet of sufficient size to allow the cutting head to be oriented by an externally applied magnetic field. The magnet may be a portion of the cutting head made from a magnetically permeable or permanent magnetic material, a portion of the drive shaft made from a magnetically permeable or permanent magnetic material; a separate magnet between the cutting head and the drive shaft, a portion a magnet on a sheath covering the drive shaft. Alternatively a guide wire can provided with a magnetic material on its distal end. Through the application of a magnetic field and/or a magnetic gradient, the artherectomy device can be guided to the location of the atheromatous material in the body.
    Type: Grant
    Filed: March 30, 1999
    Date of Patent: August 6, 2002
    Assignee: Stereotaxis, Inc.
    Inventors: Andrew F. Hall, Jeffrey Garibaldi, Peter R. Werp, John M. Lasala
  • Patent number: 6425854
    Abstract: A method for delivery of a biocompatible polymer composition for treatment of urinary incontinence provides for delivery of biocompatible polymer material and a solidification agent through two lumens of a delivery device. The delivery device provides better control of the precipitation of the polymer in the periurethral tissue and detachment of the precipitated mass from the delivery device. The medical device includes a needle having a lumen and an inner cannula positioned within the needle lumen and movable longitudinally in the needle lumen from an extended position to a withdrawn position to sheer or cut the delivered mass of polymer material away from the needle tip.
    Type: Grant
    Filed: October 2, 2000
    Date of Patent: July 30, 2002
    Assignee: Genyx Medical, Inc.
    Inventors: Kenneth M. Galt, John Wardle, Thomas J. Berryman