Patents by Inventor Roger W. Perkins

Roger W. Perkins 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: 7285120
    Abstract: A device and associated method for performing ablation procedures on anatomical structures accessible from within the chambers of the heart to form lesions that electrically isolate the tissue.
    Type: Grant
    Filed: May 27, 2004
    Date of Patent: October 23, 2007
    Assignee: Venture Manufacturing, LLC
    Inventors: Karl S. Im, John T. To, Roger W. Perkins
  • Publication number: 20040243124
    Abstract: A device and associated method for performing ablation procedures on anatomical structures accessible from within the chambers of the heart to form lesions that electrically isolate the tissue.
    Type: Application
    Filed: May 27, 2004
    Publication date: December 2, 2004
    Inventors: Karl S. Im, John T. To, Roger W. Perkins
  • Publication number: 20020103446
    Abstract: The present invention relates to a guidewire having a shaped three dimensional guide section. In the preferred embodiment the guide section is helical, and exerts an outward radial force on a lumen the guidewire is constrained in. The outward radial force can be measured or calculated according to methods of the present invention. Also described is a system comprising a guidewire and catheter where the force of the catheter exerts on a body lumen can also be calculated. Apparatus and methods of making the guidewire are also disclosed, as well as alternative embodiments of the guidewire.
    Type: Application
    Filed: January 24, 2002
    Publication date: August 1, 2002
    Applicant: PROLIFIX MEDICAL, INC.
    Inventors: Timothy B. McFann, Kathy M. Mah, James D. Passafaro, Roger W. Perkins, Joan Huynh, Greg R. Patterson, Ronald G. Williams, David J. Kupiecki
  • Patent number: 6371928
    Abstract: The present invention relates to a guidewire having a shaped three dimensional guide section. In the preferred embodiment the guide section is helical, and exerts an outward radial force on a lumen the guidewire is constrained in. The outward radial force can be measured or calculated according to methods of the present invention. Also described is a system comprising a guidewire and catheter where the force the catheter exerts on a body lumen can also be calculated. Apparatus and methods of making the guidewire are also disclosed, as well as alternative embodiments of the guidewire.
    Type: Grant
    Filed: October 13, 1999
    Date of Patent: April 16, 2002
    Assignee: Prolifix Medical, Inc.
    Inventors: Timothy B. Mcfann, Kathy M. Mah, James D. Passafaro, Roger W. Perkins, Joan Huynh, Greg R. Patterson, Ronald G. Williams, David J. Kupiecki
  • Patent number: 6139557
    Abstract: An apparatus and method of making a guidewire with a preformed three dimensional profile is described. The Apparatus comprises a mandrel having a screw thread for receiving a core wire and at least one securing means for holding the core wire onto the mandrel. The core wire must be retained under tension in order to properly impart the desired shape into the core wire. A system and method of using the apparatus is disclosed comprising the steps of loading the core wire onto the mandrel, securing the core wire and mandrel and then heating the assembly until the wire takes the desired shape.
    Type: Grant
    Filed: April 12, 1999
    Date of Patent: October 31, 2000
    Assignee: Prolifix Medical, Inc.
    Inventors: James D. Passafaro, Larry B. Rogers, Kathy M. Mah, Roger W. Perkins, Joan Huynh
  • Patent number: 5470415
    Abstract: A vascular catheter includes a flexible catheter body having proximal and distal ends and an elongate housing secured to the distal end of the catheter body. An interactional device is disposed on one side of the housing, and at least two spaced-apart inflatable chambers are located on the other side of the housing generally at its proximal and distal ends, respectively. The inflatable chambers may be expanded simultaneously or separately, and the spaced-apart positioning of the chambers provides for stable positioning of the housing during atherectomy procedures, imaging procedures, and the like. The balloon is conveniently connected to the housing by an integral flange structure which is secured through an inflation aperture on the housing side. The balloon may be inflated through an annular inflation which is defined by a separate isolation tube disposed in the central lumen of the catheter body.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: November 28, 1995
    Assignee: Devices for Vascular Intervention, Inc.
    Inventors: Roger W. Perkins, Gerri L. Chatelain
  • Patent number: 5222966
    Abstract: A vascular catheter includes a flexible catheter body having proximal and distal ends and an elongate housing secured to the distal end of the catheter body. An interactional device is disposed on one side of the housing, and at least two spaced-apart inflatable chambers are located on the other side of the housing generally at its proximal and distal ends, respectively. The inflatable chambers may be expanded simultaneously or separately, and the spaced-apart positioning of the chambers provides for stable positioning of the housing during atherectomy procedures, imaging procedures, and the like. The balloon is conveniently connected to the housing by an integral flange structure which is secured through an inflation aperture on the housing side. The balloon may be inflated through an annular inflation which is defined by a separate isolation tube disposed in the central lumen of the catheter body.
    Type: Grant
    Filed: March 3, 1992
    Date of Patent: June 29, 1993
    Assignee: Devices for Vascular Intervention, Inc.
    Inventors: Roger W. Perkins, Gerri L. Chatelain
  • Patent number: 4892256
    Abstract: An up-spray deflector cup for use in an irrigation device of the type suspended from an overhead traveling irrigation system for discharging water from a downwardly directed nozzle in close proximity to the ground, the deflector cup being positioned centrally below the nozzle and serving to deflect water from the nozzle upwardly and radially outwardly as diametrically opposed from choped sprays. The deflector cup includes two concentric sets of deflecting surfaces for deflecting water from different size nozzles risible with the irrigation device.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: January 9, 1990
    Assignee: Rain Bird Sprinkler Mfg. Corp.
    Inventors: Richard D. Brown, Doyle R. Metz, Roger W. Perkins