Patents by Inventor Marcia Leatham

Marcia Leatham 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).

  • Laser pulmonary vein isolation
    Patent number: 6997924
    Abstract: A catheter introduction apparatus provides an optical assembly for emission of laser light energy. In one application, the catheter and the optical assembly are introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. An anchoring balloon is expanded to position a mirror near the ostium of the pulmonary vein, such that light energy is reflected and directed circumferentially around the ostium of the pulmonary vein when a laser light source is energized. A circumferential ablation lesion is thereby produced, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.
    Type: Grant
    Filed: September 17, 2002
    Date of Patent: February 14, 2006
    Assignee: Biosense Inc.
    Inventors: Yitzhack Schwartz, Assaf Govari, Shlomo Ben-Haim, Uri Yaron, Marcia Leatham
  • Radio frequency pulmonary vein isolation
    Patent number: 6814733
    Abstract: A catheter introduction apparatus provides a radially expandable helical coil as a radiofrequency emitter. In one application the emitter is introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. The emitter is radially expanded, which can be accomplished by inflating an anchoring balloon about which the emitter is wrapped, in order to cause the emitter to make circumferential contact with the inner wall of the pulmonary vein. The coil is energized by a radiofrequency generator, and a circumferential ablation lesion is produced in the myocardial sleeve of the pulmonary vein, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: November 9, 2004
    Assignee: Biosense, Inc.
    Inventors: Yitzhack Schwartz, Assaf Govari, Uri Yaron, Marcia Leatham, Michael Levin
  • Laser pulmonary vein isolation
    Publication number: 20040054360
    Abstract: A catheter introduction apparatus provides an optical assembly for emission of laser light energy. In one application, the catheter and the optical assembly are introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. An anchoring balloon is expanded to position a mirror near the ostium of the pulmonary vein, such that light energy is reflected and directed circumferentially around the ostium of the pulmonary vein when a laser light source is energized. A circumferential ablation lesion is thereby produced, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.
    Type: Application
    Filed: September 17, 2002
    Publication date: March 18, 2004
    Inventors: Yitzhack Schwartz, Assaf Govari, Shlomo Ben-Haim, Uri Yaron, Marcia Leatham
  • Radio frequency pulmonary vein isolation
    Publication number: 20030144658
    Abstract: A catheter introduction apparatus provides a radially expandable helical coil as a radiofrequency emitter. In one application the emitter is introduced percutaneously, and transseptally advanced to the ostium of a pulmonary vein. The emitter is radially expanded, which can be accomplished by inflating an anchoring balloon about which the emitter is wrapped, in order to cause the emitter to make circumferential contact with the inner wall of the pulmonary vein. The coil is energized by a radiofrequency generator, and a circumferential ablation lesion is produced in the myocardial sleeve of the pulmonary vein, which effectively blocks electrical propagation between the pulmonary vein and the left atrium.
    Type: Application
    Filed: January 31, 2002
    Publication date: July 31, 2003
    Inventors: Yitzhack Schwartz, Assaf Govari, Uri Yaron, Marcia Leatham, Michael Levin