Patents by Inventor Martin R. Willard

Martin R. Willard 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: 5968069
    Abstract: A system/assembly for delivery and deployment of an inflation expandable stent within a vessel, comprising a catheter having proximal and distal ends; a stent, inflation expandable from a delivery diameter to a deployment diameter, such that the delivery diameter is reduced from the deployment diameter for conforming the stent to the catheter, such that the stent, in its delivery diameter, is coaxially mounted on the catheter near the catheter distal end; an expandable inflation means coaxially mounted on the catheter axially within the stent, for expansion of the stent from the delivery diameter to the deployment diameter upon application of fluid deployment pressure to the inflation means; and a securement component coaxially mounted on the catheter, axially within the expandable inflation means, the securement component designed and adapted to provide a securement pressure to the stent in the delivery diameter to maintain the stent in position on the catheter during delivery to the deployment site.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: October 19, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: Andrew J. Dusbabek, Louis G. Ellis, Christopher R. Larson, Terry V. Brown, Charles L. Euteneuer, Steven P. Mertens, Richard C. Mattison, David J. Blaeser, Linda R. Lorentzen Cornelius, Martin R. Willard, Fernando Di Caprio, Stanley A. Nordin
  • Patent number: 5944726
    Abstract: A stent delivery system to facilitate introduction and placement of a stent, including a catheter having an expandable distal portion constructed and arranged for expanding the outer diameter of the catheter from a contracted state to an expanded state: a stent positioned around the distal portion of the catheter having a contracted condition and being expandable to an expanded condition, and being sized in the contracted condition to closely surround the catheter in the contracted state, the expandable distal portion of the catheter including a balloon within which there is included on the catheter shaft at least one body of a diameter larger than the catheter shaft to which the stent and balloon are fitted, as by crimping, for holding the stent in place until it is released therefrom by expansion of the balloon and further including axially slidable sleeves over the stent in the unexpanded condition.
    Type: Grant
    Filed: August 22, 1997
    Date of Patent: August 31, 1999
    Assignee: SciMed Life Systems, Inc.
    Inventors: David J. Blaeser, Linda R. Lorentzen Cornelius, Martin R. Willard
  • Patent number: 5441516
    Abstract: Apparatus including a spiral coil body as a stent for temporarily supporting a body vessel internally, the spiral coil body being adjustable in diameter by relative rotation of at least one of the ends of the body from a proximal location.
    Type: Grant
    Filed: March 3, 1994
    Date of Patent: August 15, 1995
    Assignee: Scimed Lifesystems Inc.
    Inventors: Lixiao Wang, Martin R. Willard, Thomas T. Tran, Roger Hastings, Dale F. Schmaltz, Thomas J. Holman
  • Patent number: 5282784
    Abstract: A stent for assistance in draining urine from the kidney into the bladder through the ureter which may be partially or totally occluded. The stent has the capability to selectively inject a liquid, such as a dye, into the renal system. The stent is fabricated from a biocompatible tube, preferably of silicone rubber. The proximal and distal ends of the tube are preformed into a pigtail or other shape to secure in the renal and bladder cavities, respectively. The proximal and distal ends of the tube are perforated to provide for ingress and egress of the urine. During the implantation procedure, a guide wire is first advanced to provide a path for positioning the stent. The stent is advanced over the guide wire by pushing with a multiple diameter injection catheter. The smaller diameter proximal end of the injection catheter is positioned within the distal end of the stent at a predetermined fixed distance which occludes the distal perforations.
    Type: Grant
    Filed: October 9, 1991
    Date of Patent: February 1, 1994
    Assignee: Mentor Corporation
    Inventor: Martin R. Willard