Patents by Inventor Gail Stevens

Gail Stevens 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: 5954714
    Abstract: Apparatus for thermal coagulation having an improved circulation assembly and heating assembly. The apparatus includes a balloon catheter secured to and in fluid communication with a handle for inserting the apparatus into a human uterus. A distensible bladder is secured to the distal end of the catheter and encloses a heating assembly having a tubular core configured with a spiral groove which retains a heating filament. An impeller having at least two blades is positioned distal of the heating assembly and includes a cable having a distal end secured to the impeller. The impeller cable is partially disposed in the handle, in the elongate tubular member and in the core of the heating element, such that axial rotation of said cable rotates the blades of said impeller. During use of the apparatus, the distensible bladder is inflated with a fluid to a desired pressure and rotation of the impeller blades is initiated.
    Type: Grant
    Filed: November 20, 1996
    Date of Patent: September 21, 1999
    Assignee: Gynecare, Inc.
    Inventors: Vahid Saadat, John J. McIntyre, Gail Stevens
  • Patent number: 5800493
    Abstract: An apparatus, and method for endometrial ablation by heating an inflation medium within a distensible bladder positioned within a uterus of a patient. The apparatus comprises an elongate tubular member, a handle, a distensible bladder and a heating element disposed within said distensible bladder. The system includes a controller configured for providing and regulating electric current to the heating element. The controller also includes a pressure sensor for regulating the pressure in the distensible bladder. Pressure and temperature displays and other operator controls are located on the controller unit. The method for performing endothelial ablation comprises inserting the distensible bladder and a portion of the tubular member into a uterus of a patient. The inflation medium within the distensible bladder is heated by providing electric current to the resistive wire of the heating element.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: September 1, 1998
    Assignee: Gynecare, Inc.
    Inventors: Gail Stevens, Todd A. Thompson, Steven A. Daniel, Robert D. Warner
  • Patent number: 5431173
    Abstract: Hollow body structures may be manipulated and dissected from surrounding tissue using a manipulator device and a dissection device. The manipulator includes a rigid shaft having an inflatable balloon at its distal end. By inserting the balloon through a wall of the body structure and inflating the balloon, the body structure can be manipulated using the shaft to expose a dissection plane in an optimum manner. The dissection device is used to separate the body structure from its surrounding tissue. The separator device includes a separator head which is a cylindrical body having a plurality of axial channels therein. The dissector head is rotated or oscillated at a high frequency and acts to separate the body structure from the surrounding tissue with minimum damage.
    Type: Grant
    Filed: May 29, 1992
    Date of Patent: July 11, 1995
    Assignee: Origin Medsystems, Inc.
    Inventors: Albert K. Chin, Frederic H. Moll, Gail Stevens, Robert D. Warner
  • Patent number: 5383889
    Abstract: An apparatus for applying a manipulating force to manipulate a hollow body. The apparatus comprises a hollow shaft at the distal end of which is attached an elastomeric balloon that is inflatable from a collapsed state to an expanded state to engage the hollow body. A tether, attached to the distal tip of the elastomeric balloon, limits distal excursion, and freely allows proximal excursion, of the distal tip of the elastomeric balloon in response to the manipulating force. The tether may be flexible, with its distal end attached to the distal tip of the elastomeric balloon, and its proximal end attached within the hollow shaft. Alternatively, the tether may include an elongate member slidably mounted within the hollow shaft, and a stop that limits distal sliding of the elongate member. The distal tip of the balloon is attached to the distal end of the elongate member. In a method according to the invention for manipulating a hollow body, the apparatus just described is provided.
    Type: Grant
    Filed: October 9, 1992
    Date of Patent: January 24, 1995
    Assignee: Origin Medsystems, Inc.
    Inventors: Robert D. Warner, Albert K. Chin, Gail Stevens